rusty-bidding-bot reference: engine 0.11.2, API 1, rules 025ff0a765f62ceb
=========================================================================

A rule-based bridge bidding engine (Rust, compiled to WebAssembly) bidding
all four hands of a deal in the browser, seat by seat, with the convention
cards you choose. Generated from the page's own vocabulary and the engine it
ships, so it describes exactly the tool served beside it.

  Page:    https://bridge-craftwork.com/rusty-bidding-bot/
  Status:  https://bridge-craftwork.com/rusty-bidding-bot/status.html (data: status/status.json)
  Source:  https://github.com/bridge-craftwork/rusty-bidding-bot
  Engine:  107 convention modules, 4167 rules

PAGE
----

Pick a deal (a Practice-Bidding-Scenarios scenario, a random deal, a
dealer3 script or a deal of your own), the two partnerships' convention
cards, and let the engine bid: one call at a time or to the end. Undo takes
back the last call; the bidding box makes a call of your own, and the
engine carries on from it. Alerted and announced calls are marked; the
meanings of all calls can be shown. The x-ray shows, under the auction,
every rule the engine weighed for a call (its priority, descriptiveness and
why it lost), what each seat had shown and each side's forcing state
before it, and how the engine reads BBA's auction. When the auction ends every hand is
shown with the double-dummy table, par and the contract's result. For a
scenario, BBA's auction of the same deal is shown beside ours. Settings a
card switches on that no rule reads (conventions and treatments the engine
does not play) are flagged.

DEEP LINKS
----------

The page's state is in the URL fragment (never the query string), as
key=value pairs joined by &, values URI-encoded: every INPUT field and
every PARAMS field below whose value is text, a number or true/false.
Examples:

  #scenario=Stayman&board=12
  #random=true&seed=42&board=3&view=S
  #deal=N%3AAK52.KJ7.Q94.K83%20QJ3.Q95.KJ3.QJ74%20T64.AT832.A2.T62%20987.64.T8765.A95&dealer=N&vul=None&auction=1NT%20Pass&ns=21GF-DEFAULT&ew=Precision
  #scenario=Jacoby_2N&board=4&rotate=2&stop=3
  #scenarioScript=Stayman&seed=7
  #scenario=Stayman&board=12&xray=1

stop=N shows the position after N calls (the engine is deterministic, so
the link reproduces them). xray=1 opens the x-ray under the auction (the
rules the engine weighed for a call, what each seat had shown, the forcing
state); xray=all shows it for every call. set is written path=value;path=value. An
uploaded card cannot travel in a link.

JAVASCRIPT API
--------------

window.rustyBiddingBot = { run, validate, getInput, setInput, getOutput }

  run(input, params)       Promise of the output. Loads input (null keeps
                           the current deal), applies params, bids to
                           params.stop and solves the deal when it ends.
                           The page shows the result.
  validate(input, params)  Promise of {ok, diagnostics}: checks without
                           bidding (the deal, dealer, auction legality,
                           cards, params; a dealer3 script's syntax).
  getInput()               The input that reproduces the page's position.
  setInput(input)          Promise: load input into the page (the calls
                           in input.auction; the engine does not bid).
  getOutput()              The page's state as data (below).

input: an object with the fields below, or a string (a PBN deal
"N:<N> <E> <S> <W>", or PBN text of one board).

  scenario    PBS scenario name, e.g. "Stayman"
              Deal a board from the Practice-Bidding-Scenarios corpus for
              this scenario (500 boards each, with BBA's own auction for
              comparison). Its convention cards become the default cards.

  board       integer 1-500
              Which corpus board (scenario), or the board number for dealer
              and vulnerability (random, script). Default 1.

  scenarioScriptPBS scenario name
              Deal fresh boards with that scenario's own dealer script
              (dealer3), from `seed`, instead of its corpus; its cards as
              for scenario.

  script      dealer3 script text
              Deal with dealer3 (the dealer.exe language): the first deal
              the script produces from `seed`. `# convention-card-ns:` /
              `-ew:` lines in the script choose the cards.

  random      true
              A random deal from `seed`.

  seed        integer
              Seed for random and script deals, so a link reproduces the
              deal. Default 1.

  pbn         PBN text of one board
              Its [Deal], [Dealer], [Vulnerable] and [Board] are read; its
              [Auction] is not.

  deal        PBN deal "N:<N> <E> <S> <W>" (hands S.H.D.C) or {"N": hand,
              ...}
              The deal itself.

  dealer      N | E | S | W
              Overrides the source's dealer.

  vul         None | NS | EW | All
              Overrides the source's vulnerability.

  auction     calls from the dealer, e.g. "1NT Pass 2C" (P, X, XX; 1N or
              1NT)
              Calls already made: kept as they are (forced); the engine bids
              from there.

params:

  ns          card
              default: the scenario's card, else 21GF-DEFAULT
              North-South's convention card: a built-in card name (see
              "Cards"), "scenario", {"bbsa": "<.bbsa file text>"} or
              {"json": <Bridge-Classroom card JSON: card_data, or the
              editor's export {schema, name, card_data}>}.

  ew          card
              default: the scenario's card, else 21GF-GIB
              East-West's card, the same forms.

  set         ["path=value", ...]
              default: []
              Card changes for both sides, e.g. "general.style=bba" or
              "notrump.stayman.play=false" (field paths: the conventions
              reference, `card:` lines).

  scoring     MP | IMP
              default: the board's, else MP
              Matchpoints or IMPs; some rules judge by it.

  rotate      0 | 1 | 2 | 3
              default: 0
              Turn the deal this many seats clockwise (dealer and
              vulnerability turn with it). With odd turns the scenario's
              cards change sides too, so each hand keeps its system.

  stop        "end" or an integer
              default: "end"
              How many calls to have on the table when run() returns: "end"
              bids the auction out.

  dd          true | false
              default: true
              Solve the double-dummy table, par and the contract's result
              when the auction ends.

  view        all | N | E | S | W
              default: all
              The page: show all four hands, or only this seat's until the
              auction ends.

  meanings    true | false
              default: false
              The page: show what every call means, not only alerts.

  xray        0 | 1 | all
              default: 0
              X-ray: every rule the engine weighed for each call (priority,
              descriptiveness, why each lost), what every seat had shown and
              each side's forcing state before the call, and how the engine
              read the call; for a scenario, how it read BBA's auction. 1:
              the page shows the selected call's x-ray under the auction
              (the last call when none is selected); all: every call's. With
              1 or all the output carries `xray` (true and false are read as
              1 and 0).

output:

  ok            false when a diagnostic is an error
  source        "scenario" | "random" | "script" | "deal"
  scenario, board
  deal          PBN deal, after rotation; hands {N, E, S, W}
  dealer, vul, scoring, rotate
  cards         {ns, ew}: the names of the cards in play
  calls         [{seat, call, by, why, meaning, alert, rule, noRule, shows}]
                by: "engine" | "you" | "forced" (from input.auction);
                why: the engine's reason for its call; meaning: what the
                call shows to the table; alert: null or {kind: "alert" |
                "announce", text}; noRule: no rule explains the call (a gap
                in the engine's system); shows: the caller's hand as known
                after the call
  complete, next, contract, declarer
  dd            null, or {tricks: {N: {C, D, H, S, NT}, E, S, W},
                par: {score_ns, contracts}, result: {contract, declarer,
                tricks, score_ns}}
  bba           for a scenario, BBA's auction of the deal:
                {auction: [{seat, call, note}]}
  coverage      {ns, ew}: of the settings each card switches on, read (the
                rules use them), ignored (no rule reads them: not played),
                unmapped (settings with no card field: .bbsa keys, card
                JSON paths), other (carding, leads), score = read /
                (read + ignored)
  xray          null unless params.xray is 1 or "all"; then
                {calls: [{index, seat, call, by, hand, engineCall,
                engineWhy, offered, candidates, warnings, before,
                reading}], now, bba}. For each call: candidates are every
                rule the engine weighed for the caller's hand there,
                best-ranked first: {call, explanation, priority,
                descriptiveness, prefer, outcome, rule: {module, file,
                line}}, outcome "chosen", "outranked", "partner's call is
                forcing" or why the hand fails ("hand fails `shows
                hcp>=17`"); engineCall is what the engine bids with that
                hand there (for a call it did not make, too) and offered
                whether any rule offers the call actually made; before is
                the table before the call: {knowledge: {N, E, S, W: {hcp:
                {min, max}, lengths: {S, H, D, C}, balanced, summary,
                shown}}, sides: {ns, ew: {trump, forcing: "none" |
                "round" | "game", forcing_by, ask, answered, summary}}};
                reading is how the table reads the call: {explanation,
                alert, rule, artificial, knowledge (the caller's, after
                it)}. now is the table after the last call, in the shape
                of before. bba (a scenario) is BBA's auction as the engine
                reads it: [{seat, call, note, reading, engineCall}].
  diagnostics   [{severity, message, line?, col?, hint?}]

DIAGNOSTICS
-----------

{severity: "error" | "warning" | "info", message, line?, col?, hint?}.
message starts with the field it concerns (deal.N:, auction:, cards.ns:,
params.scoring:, script:). line and col are 1-based: the column of a call
in an auction string, the line of a key in a .bbsa card, the line and
column in a dealer script. The page lists them under the table.

CARDS
-----

Built in (the Practice-Bidding-Scenarios .bbsa cards):
21GF-DEFAULT, 21GF-Flannery, 21GF-GIB-Bergen, 21GF-GIB, 21GF-Gazzilli,
21GF-MSS, 21GF-MSTandMSS, 21GF-Multi, 21GF-NoInvertedMinor, 21GF-Ogust,
21GF-PolishTwoSuiters, 21GF-Puppet, 21GF-SPECIALS, 21GF-SPECIALS2,
21GF-WJS-MSS, Basic-Bridge, Brill, Natural-4CM, Natural, Precision-14-16,
Precision, SAYC

Also: a BBA .bbsa file ({"bbsa": text}), or a Bridge-Classroom convention
card ({"json": card_data}, or the editor's export {"json": {schema, name,
card_data}}: keys such as _bbo_raw are ignored); BC-21-Intermediate is
Bridge-Classroom's 2/1 Intermediate card, built in. The page converts any
card to either format (its JSON download is Bridge-Classroom's export).

CONVENTIONS
-----------

The engine's rules, module by module: the card fields that switch each
module on, and every call it knows with what the call shows.

# rusty-bidding-bot conventions reference
# rbb 0.11.2 rules 025ff0a765f62ceb
# 107 modules, 4167 rules
#
# Calls: P pass, X double, XX redouble; (..) the opponents' calls.
# x/y any suit, M a major, m a minor. Text in {..} is filled in when bidding.

== base: Natural opening bids
   file: conventions/base/base.bid
   skills: basic_bidding/major_suit_openings, basic_bidding/minor_suit_openings, partnership_bidding/basic_bidding
   define passes_out_artificial = artificial_contract, rho.last=P

   after (any auction)
     when opening
     1S     Major opening: 5+ spades
            shows hcp>=10, hcp+length_points>=min_open, hcp<=21 | (!forcing_2c, !forcing_1c), S>=5, S>=H, (S>=D, S>=C) | !may5
            when  style is standard
     1H     Major opening: 5+ hearts
            shows hcp>=10, hcp+length_points>=min_open, hcp<=21 | (!forcing_2c, !forcing_1c), H>=5, H>S, (H>=D, H>=C) | !may5
            when  style is standard
     1D     3+ diamonds
            shows hcp>=10, hcp+length_points>=min_open, hcp<=21 | (!forcing_2c, !forcing_1c), D>=3, D>C | D>=4, D>=C, H<=4 | (H<D, may5), S<=4 | (S<D, may5)
            when  style is standard
     1C     3+ clubs
            shows hcp>=10, hcp+length_points>=min_open, hcp<=21 | (!forcing_2c, !forcing_1c), C>D | (C=3, D=3), H<=4 | (H<C, may5), S<=4 | (S<C, may5)
            when  style is standard
     1S     Major opening: 5+ spades
            shows hcp>=10, hcp+length_points>=min_open, hcp<=21 | (!forcing_2c, !forcing_1c), S>=5, S>=H, (S>=D, S>=C) | !may5, hcp>=11 | S<=5 | H<=3 | controls>=3 | (controls=2, !has(A,S), !has(A,H), !has(A,D), !has(A,C))
            when  style is not standard
     1H     Major opening: 5+ hearts
            shows hcp>=10, hcp+length_points>=min_open, hcp<=21 | (!forcing_2c, !forcing_1c), H>=5, H>S, (H>=D, H>=C) | !may5, hcp>=11 | H<=5 | S<=3 | controls>=3 | (controls=2, !has(A,S), !has(A,H), !has(A,D), !has(A,C))
            when  style is not standard
     1D     3+ diamonds
            shows hcp>=10, hcp+length_points>=min_open, hcp<=21 | (!forcing_2c, !forcing_1c), D>=3, D>C | D>=4, D>=C, H<=4 | (H<D, may5), S<=4 | (S<D, may5), hcp>=11 | D<=5 | (H<=3, S<=3) | controls>=3 | (controls=2, !has(A,S), !has(A,H), !has(A,D), !has(A,C))
            when  style is not standard
     1C     3+ clubs
            shows hcp>=10, hcp+length_points>=min_open, hcp<=21 | (!forcing_2c, !forcing_1c), C>D | (C=3, D=3), H<=4 | (H<C, may5), S<=4 | (S<C, may5), hcp>=11 | C<=5
            when  style is not standard
     P      No opening bid
            shows hcp<=min_open-1, hcp+length_points<=min_open-1 | hcp<=9
     P      No opening bid
            shows hcp=10, longest=6
            when  style is not standard

   after (any auction)
     when opening, seat=3
     1S     Major opening: 4+ good spades, 10-11 HCP
            shows S>=4, hcp=10..11, quality(S)>=good
     1H     Major opening: 4+ good hearts, 10-11 HCP
            shows H>=4, hcp=10..11, quality(H)>=good, S<=3

   after (any auction)
     when opening, seat=4
     P      No opening bid: HCP and spades under 15
            shows hcp<=14
            when  hcp+S<=14

   after (any auction)
     when game_reached
     P      No further bid
            when  !passes_out_artificial

   after (any auction)
     when game_reached, we.trump is suit, partner.unread, rho.last=P, !(partner.last=P | partner.last=X | partner.last=XX | partner.last=4{trump} | partner.last=5{trump} | partner.last=6{trump} | partner.last=7{trump})
     cheapest(trump) Back to the agreed suit

   after (any auction)
     when passes_out_artificial
     cheapest(S) Runout: our best known fit
            when  !lho.named(S), !rho.named(S)
     cheapest(H) Runout: our best known fit
            when  !lho.named(H), !rho.named(H)
     cheapest(D) Runout: our best known fit
            when  !lho.named(D), !rho.named(D)
     cheapest(C) Runout: our best known fit
            when  !lho.named(C), !rho.named(C)

   after (any auction)
     when we.forcing=game, !game_reached
     4{trump} Game in the agreed suit
            when  we.trump is H | we.trump is S
     5{trump} Game in the agreed suit
            when  we.trump is C | we.trump is D
     3N     Game in notrump
            when  we.trump is none
     4S     Game in the spade fit
            shows S+partner.S.min>=8
            when  we.trump is none
     4H     Game in the heart fit
            shows H+partner.H.min>=8
            when  we.trump is none
     5D     Game in the diamond fit
            shows D+partner.D.min>=8
            when  we.trump is none
     5C     Game in the club fit
            shows C+partner.C.min>=8
            when  we.trump is none

== checkback: Checkback Stayman
   file: conventions/base/checkback.bid
   card: other_conventions.checkback.play
   needs: responder-rebids
   skills: bidding_conventions/checkback

   after 1x (P) 1M (P) 1N (P)
     when !tw(x)
     2C     Checkback: invitational or better, asks about the majors  [alert]  [artificial]
            shows M>=5 | (H>=4, S>=4), points>=11

   after 1C (P) 1D (P) 1N (P)
     when !tw(C)
     2C     Checkback: invitational+, asks for a 4-card major  [alert]  [artificial]
            shows H>=4 | S>=4, points>=11

   after 1m (P) 1M (P) 1N (P) 2C (P)
     when !tw(m)
     2M     Three {M}
            shows M=3
     2H     Four hearts, not three spades
            shows H>=4, S<=2
            when  M is S
     2D     No three {M}, no four-card major to show  [artificial]

   after 1H (P) 1S (P) 1N (P) 2C (P)
     2S     Three spades
            shows S=3
     2D     Not three spades  [artificial]

   after 1C (P) 1D (P) 1N (P) 2C (P)
     when !tw(C)
     2H     Four hearts
            shows H>=4
     2S     Four spades, not four hearts
            shows S>=4, H<=3
     2D     No four-card major  [artificial]
            shows H<=3, S<=3

   after (any auction)
     when answered checkback
     4H     Game in the heart fit
            shows points>=13, H>=5 | (H>=4, partner.H.min>=4)
            when  partner.H>=3
     3H     Invitational, heart fit
            shows points=11..12, H>=5 | (H>=4, partner.H.min>=4)
            when  partner.H>=3
     4S     Game in the spade fit
            shows points>=13, S>=5 | (S>=4, partner.S.min>=4)
            when  partner.S>=3
     3S     Invitational, spade fit
            shows points=11..12, S>=5 | (S>=4, partner.S.min>=4)
            when  partner.S>=3
     3N     Game, no fit
            shows points>=13
     2N     Invitational, no fit
            shows points=11..12

== fit: A major-suit fit: agreed, or seen by one hand
   file: conventions/base/fit.bid
   needs: base
   define agreed_fit(x) = trump is x | shown.x.min+partner.x.min>=8
   define private_fit(x) = x+partner.x.min>=8, shown.x.min+partner.x.min<=7
   define fit_game_values(t) = (longer(t), hcp+length_points+partner.points.min>=25) | (!longer(t), tp(t)+partner.points.min>=25)
   define fit_slam_call(t) = (no_ask, direct_count(t)) | (!no_ask, shown_fit(t), fit_slam_values(t), !two_bare_beside(t))
   define fit_slow_agree(t) = we.forcing=game, partner.t.min>=3, under_game(t), t+partner.t.min>=8, slam_interest(t)
   define slam_route = fit_slow_agree(S) | fit_slow_agree(H) | fit_slam_call(S) | fit_slam_call(H)
   define fit_slam_room(t) = (slam_interest(t), !partner.last=3N) | (partner.last=3N, hcp+partner.hcp.min>=32)
   define other_major_open(x) = x>=4, partner.x.max>=4
   define partner_named(x) = partner.last=1{x} | partner.last=2{x} | partner.last=3{x} | partner.last=4{x}

   after (any auction)
     when !asked, we.trump is none, !game_reached | partner.last=3N, !they.bid | rho.last=P, me.has_bid, !(partner.last=2N, partner.hcp.min>=20), !(partner.last=3N, partner.hcp.min>=24, texas | tu), partner.last=1N | partner.last=2N | partner.last=3N | answered nmf | answered majors
     4S     Game in the spade fit
            shows S+partner.S.min>=8, fit_game_values(S)
            when  shown.S.min+partner.S.min<=7 | partner.last=3N, partner.S.min>=2, !partner_named(S), !slam_route, !fit_slam_room(S), !other_major_open(H)
     4H     Game in the heart fit
            shows H+partner.H.min>=8, fit_game_values(H)
            when  shown.H.min+partner.H.min<=7 | partner.last=3N, partner.H.min>=2, !partner_named(H), !slam_route, !fit_slam_room(H), !other_major_open(S)

== fourth-suit-forcing: Fourth suit forcing
   file: conventions/base/fourth-suit-forcing.bid
   needs: base
   skills: bidding_conventions/fourth_suit_forcing
   define fsf_on = fsf_play | fsf_round | fsf_gf
   define fsf_game = fsf_gf | (fsf_play, !fsf_round)

   after 1x (P) 1y (P) 1z (P) | 1x (P) 1y (P) 2z (P)
     when y is not x, z is not x, z is not y, !tw(x)
     cheapest(w) Fourth suit forcing: game values  [alert]  [artificial]
            shows points>=13
            when  fsf_on, fsf_game, w is not x, w is not y, w is not z, cheapest_rank(w)<=13, !passed_hand
     cheapest(w) Fourth suit forcing: 12+  [alert]  [artificial]
            shows points>=12
            when  fsf_on, !fsf_game, w is not x, w is not y, w is not z, cheapest_rank(w)<=13, !passed_hand

   after (any auction)
     when asked fsf(x,y,z,w)
     cheapest(y) Three-card support for {y}
            shows y>=3
     cheapest(N) A stopper in {w}
            shows stop(w), y<=2
     cheapest(x) Five or more {x}
            shows x>=5, y<=2, !stop(w)
     cheapest(z) Five or more {z} as well
            shows z>=5, y<=2, !stop(w)
     cheapest(w) Four cards in {w}
            shows w>=4, y<=2, !stop(w)
     cheapest(x) No support, no stopper in {w}

   after (any auction)
     when answered fsf(x,y,z,w)
     4y     Game in the {y} fit
            shows we.fit(y).min>=8, points>=12
            when  y is H | y is S
     3N     Game in notrump
            shows points>=12
     P      No game: invitational values
            shows points<=12
            when  !we.gf

== gambling-3nt: Gambling 3NT: a solid minor
   file: conventions/base/gambling-3nt.bid
   card: notrump.three_nt.one_suit
   needs: preempts
   skills: bidding_conventions/gambling_3nt

   after (any auction)
     when opening, seat<=3
     3N     Gambling: a solid seven-card minor, no outside ace or king  [alert]
            shows C>=7, has(A,C), has(K,C), has(Q,C), D<=3, S<=4, H<=4, !has(A,S), !has(K,S), !has(A,H), !has(K,H), !has(A,D), !has(K,D)
     3N     Gambling: a solid seven-card minor, no outside ace or king  [alert]
            shows D>=7, has(A,D), has(K,D), has(Q,D), C<=3, S<=4, H<=4, !has(A,S), !has(K,S), !has(A,H), !has(K,H), !has(A,C), !has(K,C)

   after 3N (P)
     P      To play: the other suits stopped
            shows stop(S), stop(H), stop(C) | stop(D), hcp>=10
     4C     Pass or correct: to play in your minor  [alert]
     5C     Pass or correct: game in your minor  [alert]
            shows S<=1 | H<=1, C>=3, D>=3
     6C     Pass or correct: slam in your minor  [alert]
            shows hcp>=16, quick_tricks>=4
     4H     To play: a long heart suit
            shows H>=7 | (H>=6, hcp>=10)
     4S     To play: a long spade suit
            shows S>=7 | (S>=6, hcp>=10)

   after 3N (P) 4C (P) | 3N (P) 5C (P) | 3N (P) 6C (P)
     P      My minor is clubs
            shows C>=7
     cheapest(D) My minor is diamonds
            shows D>=7

   after 3N (P) 4H (P) | 3N (P) 4S (P)
     P      Partner's suit: to play

   after 3N (P) 4C (P) 4D (P) | 3N (P) 5C (P) 5D (P) | 3N (P) 6C (P) 6D (P)
     P      To play in opener's diamonds

== game-force: When the auction forces to game
   file: conventions/base/game-force.bid
   needs: base
   skills: bidding_conventions/two_over_one
   force game when partner.opened, !they.bid, me.bids=2, call>=3C, call<=3S, !(we.trump is suit, call=3{trump})
   force game after 1x (P) 1y (P) 2N (P) when !call=P, !(wolff, call=3C)

== ingberman: Ingberman 2NT after opener's reverse
   file: conventions/base/ingberman.bid
   card: other_conventions.ingberman_2nt.play
   needs: responder-rebids
   skills: bidding_conventions/ingberman

   after 1x (P) 1y (P) 2z (P)
     when z is not x, z is not y, we.forcing=round, !tw(x)
     2N     Ingberman: weak, relay to 3♣  [alert]  [artificial]
            shows points<=8
     2y     Five or more {y}, forcing one round
            shows y>=5, points>=6
     3x     Three or more {x}: game forcing
            shows x>=3, points>=9
     3z     Four or more {z}: game forcing
            shows z>=4, points>=9
     3y     Six or more {y}: game forcing
            shows y>=6, points>=9
     3N     Game: no fit, 9+
            shows points>=9, z<=3

   after (any auction)
     when asked ingberman
     3C     Forced: 3♣ as asked  [alert]  [artificial]

   after 1x (P) 1y (P) 2z (P) 2N (P) 3C (P)
     when answered ingberman
     3z     Weak, four or more {z}: invitational
            shows z>=4
     3y     Weak, six or more {y}: to play
            shows y>=6
     P      Weak: to play in clubs
            shows C>=2
            when  x is C
     3x     Weak: to play in {x}
            shows x>=2
            when  x is not C
     P      Weak: to play in clubs
            shows C>=5
            when  x is not C

   after 1x (P) 1y (P) 2z (P) 2y (P)
     when asked ing_suit
     3y     Three-card support for {y}
            shows y>=3
     3x     Six or more {x}
            shows x>=6, y<=2
     3z     Five or more {z}
            shows z>=5, y<=2
     3N     19+, no fit
            shows hcp>=19, y<=2
     2N     No fit for {y}
            shows y<=2

   after 1x (P) 1y (P) 2z (P) 2y (P) 2N (P)
     when answered ing_suit
     P      Weak: no game
            shows points<=8
     3y     Six or more {y}: to play
            shows y>=6, points<=8
     3N     Game: 9+
            shows points>=9

   after 1x (P) 1y (P) 2z (P) 2y (P) 3y (P)
     when answered ing_suit
     P      Weak: no game
            shows points<=7
     4y     Game
            shows points>=8
            when  y is H | y is S
     3N     Game
            shows points>=8
            when  y is C | y is D

   after 1x (P) 1y (P) 2z (P) 2y (P) 3x (P) | 1x (P) 1y (P) 2z (P) 2y (P) 3z (P)
     when answered ing_suit
     P      Weak: no game
            shows points<=7
     3N     Game
            shows points>=8

== inverted-minors: Inverted minor raises
   file: conventions/base/inverted-minors.bid
   card: minor_openings.inverted_minors.play
   needs: responses
   skills: bidding_conventions/inverted_minors

   after 1m (P)
     2m     Inverted raise: 10+, 4+ {m}, no 4-card major, forcing
            shows m>=4, hcp>=10, H<=3, S<=3
     3m     Weak raise: 5-9, 5+ {m}, no 4-card major
            shows m>=5, hcp=5..9, H<=3, S<=3

   after 1m (P) 3m (P)
     3N     Game opposite the weak raise: 18+, balanced
            shows hcp>=18, balanced | semibalanced
     5m     Game opposite the weak raise: 18+, unbalanced
            shows hcp>=18
     P      No game opposite the weak raise
            shows hcp<=17

   after 1C (P) 2C (P)
     2N     12-14 balanced
            shows balanced, hcp<=14
     3N     18-19 balanced
            shows balanced, hcp>=18
     3C     Minimum, unbalanced
            shows !balanced, hcp<=14
     2D     Extras or shape, a diamond stopper
            shows stop(D), hcp>=15 | !balanced
     2H     Extras or shape, a heart stopper
            shows stop(H), hcp>=15 | !balanced, !stop(D)
     2S     Extras or shape, a spade stopper
            shows stop(S), hcp>=15 | !balanced, !stop(H), !stop(D)
     3H     Splinter: heart shortness, four clubs
            shows H<=1, C>=4, hcp>=13
     3S     Splinter: spade shortness, four clubs
            shows S<=1, C>=4, hcp>=13
     4C     Slam try, extras and a fit
            shows C>=4, hcp>=16, !balanced

   after 1C (P) 2C (P) 2N (P)
     3N     Game values
            shows hcp>=12 | (hcp>=11, C>=5)
     3C     Minimum, to play
            shows hcp<=11, hcp<=10 | C<=4, !balanced
     P      Minimum, balanced
            shows hcp<=11, hcp<=10 | C<=4, balanced

   after 1C (P) 2C (P) 2N (P) 3C (P)
     P      No further bid

   after 1C (P) 2C (P) 3C (P)
     3N     Game values, the majors held
            shows hcp>=12, stop(S), stop(H)
     5C     Game values
            shows hcp>=13
     P      Minimum
            shows hcp<=12

   after 1C (P) 2C (P) 4C (P)
     5C     Declines the slam try

   after 1C (P) 2C (P) 2D (P) | 1C (P) 2C (P) 2H (P) | 1C (P) 2C (P) 2S (P)
     2N     10-12, balanced
            shows hcp<=12, balanced
     3N     Game values
            shows hcp>=13
     3C     10-12, unbalanced
            shows hcp<=12

   after 1C (P) 2C (P) 2D (P) 2N (P) | 1C (P) 2C (P) 2H (P) 2N (P) | 1C (P) 2C (P) 2S (P) 2N (P)
     3N     Game
            shows hcp>=15
     3C     Minimum, unbalanced
            shows hcp<=14

   after 1C (P) 2C (P) 3H (P)
     3N     A heart stopper
            shows hcp>=10, stop(H)
     5C     Game in clubs
            shows hcp>=12
     4C     Minimum
            shows hcp<=11

   after 1C (P) 2C (P) 3S (P)
     3N     A spade stopper
            shows hcp>=10, stop(S)
     5C     Game in clubs
            shows hcp>=12
     4C     Minimum
            shows hcp<=11

   after 1D (P) 2D (P)
     2N     12-14 balanced
            shows balanced, hcp<=14
     3N     18-19 balanced
            shows balanced, hcp>=18
     3D     Minimum, unbalanced
            shows !balanced, hcp<=14
     2H     Extras or shape, a heart stopper
            shows stop(H), hcp>=15 | !balanced
     2S     Extras or shape, a spade stopper
            shows stop(S), hcp>=15 | !balanced, !stop(H)
     3H     Splinter: heart shortness, four diamonds
            shows H<=1, D>=4, hcp>=13
     3S     Splinter: spade shortness, four diamonds
            shows S<=1, D>=4, hcp>=13
     4D     Slam try, extras and a fit
            shows D>=4, hcp>=16, !balanced

   after 1D (P) 2D (P) 2N (P)
     3N     Game values
            shows hcp>=12 | (hcp>=11, D>=5)
     3D     Minimum, to play
            shows hcp<=11, hcp<=10 | D<=4, !balanced
     P      Minimum, balanced
            shows hcp<=11, hcp<=10 | D<=4, balanced

   after 1D (P) 2D (P) 2N (P) 3D (P)
     P      No further bid

   after 1D (P) 2D (P) 3D (P)
     3N     Game values, the majors held
            shows hcp>=12, stop(S), stop(H)
     5D     Game values
            shows hcp>=13
     P      Minimum
            shows hcp<=12

   after 1D (P) 2D (P) 4D (P)
     5D     Declines the slam try

   after 1D (P) 2D (P) 2H (P) | 1D (P) 2D (P) 2S (P)
     2N     10-12, balanced
            shows hcp<=12, balanced
     3N     Game values
            shows hcp>=13
     3D     10-12, unbalanced
            shows hcp<=12

   after 1D (P) 2D (P) 2H (P) 2N (P) | 1D (P) 2D (P) 2S (P) 2N (P)
     3N     Game
            shows hcp>=15
     3D     Minimum, unbalanced
            shows hcp<=14

   after 1D (P) 2D (P) 3H (P)
     3N     A heart stopper
            shows hcp>=10, stop(H)
     5D     Game in diamonds
            shows hcp>=12
     4D     Minimum
            shows hcp<=11

   after 1D (P) 2D (P) 3S (P)
     3N     A spade stopper
            shows hcp>=10, stop(S)
     5D     Game in diamonds
            shows hcp>=12
     4D     Minimum
            shows hcp<=11

   after 1C (P) 2C (P) 3x (P) 4C (P)
     when x is H | x is S
     P      No further bid

   after 1D (P) 2D (P) 3x (P) 4D (P)
     when x is H | x is S
     P      No further bid

== new-minor-forcing: New Minor Forcing
   file: conventions/base/new-minor-forcing.bid
   card: other_conventions.new_minor_forcing.play
   needs: responder-rebids
   skills: bidding_conventions/new_minor_forcing

   after 1C (P) 1M (P) 1N (P)
     when !checkback, !roudi, !twoway, !xyz, !tw(C)
     2D     New Minor Forcing: invitational+, 5+ {M} or both majors  [alert]  [artificial]
            shows M>=4, points>=11

   after 1D (P) 1M (P) 1N (P)
     when !checkback, !roudi, !twoway, !xyz
     2C     New Minor Forcing: invitational+, 5+ {M} or both majors  [alert]  [artificial]
            shows M>=4, points>=11

   after (any auction)
     when asked nmf
     2H     Three hearts
            shows H=3
            when  partner.H>=4
     2S     Three spades
            shows S=3
            when  partner.S>=4
     2H     Four hearts, not three spades
            shows H>=4, S<=2
            when  partner.S>=4
     2N     No fit, minimum: 12-13 HCP
            shows hcp<=13
     3N     No fit, maximum: 14 HCP
            shows hcp>=14

   after (any auction)
     when answered nmf
     4H     Game in the heart fit
            shows points>=13, H>=5 | (H>=4, partner.H.min>=4)
            when  partner.H>=3
     3H     Invitational, heart fit
            shows points=11..12, H>=5 | (H>=4, partner.H.min>=4)
            when  partner.H>=3
     4S     Game in the spade fit
            shows points>=13, S>=5
            when  partner.S>=3
     3S     Invitational, spade fit
            shows points=11..12, S>=5
            when  partner.S>=3
     3N     Game, no fit
            shows points>=13
     2N     Invitational, no fit
            shows points=11..12
     P      Accepts the notrump game
            when  partner.last=3N
     P      No game: opener is minimum
            shows points<=12
            when  partner.last=2N

== nmf-after-2nt: New Minor Forcing after a 2NT rebid
   file: conventions/base/nmf-after-2nt.bid
   card: other_conventions.new_minor_forcing.after_2nt_rebid
   needs: responder-rebids
   skills: bidding_conventions/new_minor_forcing

   after 1C (P) 1M (P) 2N (P)
     when !tw(C)
     3D     New Minor Forcing: three {M}? four of the other major?  [alert]  [artificial]
            shows M>=5 | (H>=4, S>=4), M<=5, points>=7

   after 1D (P) 1M (P) 2N (P)
     when !wolff
     3C     New Minor Forcing: three {M}? four of the other major?  [alert]  [artificial]
            shows M>=5 | (H>=4, S>=4), M<=5, points>=7

   after 1H (P) 1S (P) 2N (P)
     3C     New Minor Forcing: three spades?  [alert]  [artificial]
            shows S=5, points>=7

   after (any auction)
     when asked nmf2n
     3H     Three hearts
            shows H=3
            when  partner.H>=4
     3S     Three spades
            shows S=3
            when  partner.S>=4
     3S     Four spades, not three hearts
            shows S>=4, H<=2
            when  partner.H>=4
     3H     Four hearts, not three spades
            shows H>=4, S<=2
            when  partner.S>=4
     3N     No fit

   after (any auction)
     when answered nmf2n
     4H     Game in the heart fit
            shows H>=5 | (H>=4, partner.H.min>=4)
            when  partner.H>=3
     4S     Game in the spade fit
            shows S>=5 | (S>=4, partner.S.min>=4)
            when  partner.S>=3
     3N     Game in notrump
     P      Opener's 3NT: play there
            when  partner.last=3N

== preempts: Weak two-bids and preempts
   file: conventions/base/preempts.bid
   needs: base
   skills: bidding_conventions/weak_2s, bidding_conventions/preemptive_bids, partnership_bidding/weak_twos
   define weak_2d_open = !flannery, !multi, !benjamin, !mini_roman, !french, !wilkosz, !prec_2d
   define weak_2h_open = !multi, !polish
   define weak_2s_open = !multi, !polish
   define weak_two_suit(x) = x is not D | (!flannery, !multi, !benjamin, !mini_roman, !french, !wilkosz, !prec_2d), x is not H | (!multi, !polish), x is not S | (!multi, !polish)

   after (any auction)
     when opening, seat<=2
     2D     Weak two: six diamonds, 4-9
            shows D=6, hcp=4..9, H<=3, S<=3
            when  two_d is weak, weak_2d_open, style is standard, !vul
     2D     Weak two: six diamonds, 4-9, a good suit
            shows D=6, hcp=4..9, H<=3, S<=3, quality(D)>=good | top5(D)>=3
            when  two_d is weak, weak_2d_open, style is standard, vul
     2H     Weak two: six hearts, 4-10
            shows H=6, hcp=4..10, S<=3
            when  two_h is weak, weak_2h_open, style is standard, !vul
     2H     Weak two: six hearts, 4-10, a good suit
            shows H=6, hcp=4..10, S<=3, quality(H)>=good | top5(H)>=3
            when  two_h is weak, weak_2h_open, style is standard, vul
     2S     Weak two: six spades, 4-10
            shows S=6, hcp=4..10
            when  two_s is weak, weak_2s_open, style is standard, !vul
     2S     Weak two: six spades, 4-10, a good suit
            shows S=6, hcp=4..10, quality(S)>=good | top5(S)>=3
            when  two_s is weak, weak_2s_open, style is standard, vul
     2D     Weak two: six diamonds, 4-10
            shows D=6, hcp=4..10, H<=3 | (!has(A,H), !has(K,H), !has(Q,H), !has(J,H)), S<=3 | (!has(A,S), !has(K,S), !has(Q,S), !has(J,S)), hcp<=9 | !has(A,D) | (!has(A,S), !has(A,H), !has(A,C))
            when  two_d is weak, weak_2d_open, style is not standard, system is not brill, !vul
     2D     Weak two: six diamonds, 4-10, a good suit
            shows D=6, hcp=4..10, quality(D)>=good | top5(D)>=3, H<=3 | (!has(A,H), !has(K,H), !has(Q,H), !has(J,H)), S<=3 | (!has(A,S), !has(K,S), !has(Q,S), !has(J,S)), hcp<=9 | !has(A,D) | (!has(A,S), !has(A,H), !has(A,C))
            when  two_d is weak, weak_2d_open, style is not standard, system is not brill, vul
     2H     Weak two: six hearts, 4-10
            shows H=6, hcp=4..10, S<=3 | (!has(A,S), !has(K,S), !has(Q,S), !has(J,S)), hcp<=9 | !has(A,H) | (!has(K,H), !has(A,S), !has(A,D), !has(A,C))
            when  two_h is weak, weak_2h_open, style is not standard, system is not brill, !vul
     2H     Weak two: six hearts, 4-10, a good suit
            shows H=6, hcp=4..10, quality(H)>=good | top5(H)>=3, S<=3 | (!has(A,S), !has(K,S), !has(Q,S), !has(J,S)), hcp<=9 | !has(A,H) | (!has(K,H), !has(A,S), !has(A,D), !has(A,C))
            when  two_h is weak, weak_2h_open, style is not standard, system is not brill, vul
     2S     Weak two: six spades, 4-10
            shows S=6, hcp=4..10, H<=3 | (!has(A,H), !has(K,H), !has(Q,H), !has(J,H)), hcp<=9 | !has(A,S) | (!has(K,S), !has(A,H), !has(A,D), !has(A,C))
            when  two_s is weak, weak_2s_open, style is not standard, system is not brill, !vul
     2S     Weak two: six spades, 4-10, a good suit
            shows S=6, hcp=4..10, quality(S)>=good | top5(S)>=3, H<=3 | (!has(A,H), !has(K,H), !has(Q,H), !has(J,H)), hcp<=9 | !has(A,S) | (!has(K,S), !has(A,H), !has(A,D), !has(A,C))
            when  two_s is weak, weak_2s_open, style is not standard, system is not brill, vul
     2D     Weak two: six diamonds, 5-10, no five-card major
            shows D=6, hcp=5..10, H<=4, S<=4, hcp<=9 | !has(A,D) | (!has(A,S), !has(A,H), !has(A,C))
            when  two_d is weak, weak_2d_open, system is brill
     2H     Weak two: six hearts, 5-10, no five spades
            shows H=6, hcp=5..10, S<=4, hcp<=9 | !has(A,H) | (!has(K,H), !has(A,S), !has(A,D), !has(A,C))
            when  two_h is weak, weak_2h_open, system is brill
     2S     Weak two: six spades, 5-10, no five hearts
            shows S=6, hcp=5..10, H<=4, hcp<=9 | !has(A,S) | (!has(K,S), !has(A,H), !has(A,D), !has(A,C))
            when  two_s is weak, weak_2s_open, system is brill

   after (any auction)
     when opening, seat=3
     2D     Weak two: five or six diamonds, 4-9
            shows D>=5, D<=6, hcp=4..9, H<=3, S<=3
            when  two_d is weak, weak_2d_open, D>=6 | quality(D)>=good
     2H     Weak two: five or six hearts, 4-9
            shows H>=5, H<=6, hcp=4..9, S<=3
            when  two_h is weak, weak_2h_open, H>=6 | quality(H)>=good
     2S     Weak two: five or six spades, 4-9
            shows S>=5, S<=6, hcp=4..9
            when  two_s is weak, weak_2s_open, S>=6 | quality(S)>=good

   after (any auction)
     when opening, seat=4
     2D     Fourth seat: six diamonds, opening values
            shows D>=6, hcp>=12, hcp<=21
            when  two_d is weak, weak_2d_open
     2H     Fourth seat: six hearts, opening values
            shows H>=6, hcp>=12, hcp<=21
            when  two_h is weak, weak_2h_open
     2S     Fourth seat: six spades, opening values
            shows S>=6, hcp>=12, hcp<=21
            when  two_s is weak, weak_2s_open

   after (any auction)
     when opening, seat<=3
     3C     Preempt: seven clubs, 4-9
            shows C=7, hcp=4..9, H<=3, S<=3
            when  !vul | quality(C)>=good | top5(C)>=3, system is not brill
     3D     Preempt: seven diamonds, 4-9
            shows D=7, hcp=4..9, H<=3, S<=3
            when  !vul | quality(D)>=good | top5(D)>=3, system is not brill
     3H     Preempt: seven hearts, 4-9
            shows H=7, hcp=4..9, S<=3
            when  !vul | quality(H)>=good | top5(H)>=3, system is not brill
     3S     Preempt: seven spades, 4-9
            shows S=7, hcp=4..9
            when  !vul | quality(S)>=good | top5(S)>=3, system is not brill
     3C     Preempt: seven clubs, 4-9, no five-card major
            shows C=7, hcp=4..9, H<=4, S<=4
            when  !vul | quality(C)>=good | top5(C)>=3, system is brill
     3D     Preempt: seven diamonds, 4-9, no five-card major
            shows D=7, hcp=4..9, H<=4, S<=4
            when  !vul | quality(D)>=good | top5(D)>=3, system is brill
     3H     Preempt: seven hearts, 4-9, no five spades
            shows H=7, hcp=4..9, S<=4
            when  !vul | quality(H)>=good | top5(H)>=3, system is brill
     3S     Preempt: seven spades, 4-9, no five hearts
            shows S=7, hcp=4..9, H<=4
            when  !vul | quality(S)>=good | top5(S)>=3, system is brill
     4H     Preempt: eight hearts
            shows H>=8, hcp=4..10, S<=3
     4S     Preempt: eight spades
            shows S>=8, hcp=4..10
     5C     Preempt: eight clubs
            shows C>=8, hcp=4..10, H<=3, S<=3
            when  system is not brill
     5D     Preempt: eight diamonds
            shows D>=8, hcp=4..10, H<=3, S<=3
            when  system is not brill
     4C     Preempt: seven or eight clubs, no five-card major
            shows C=8 | (C=7, shortest=0), hcp=4..10, H<=4, S<=4
            when  system is brill
     4D     Preempt: seven or eight diamonds, no five-card major
            shows D=8 | (D=7, shortest=0), hcp=4..10, H<=4, S<=4
            when  system is brill
     5C     Preempt: nine or more clubs
            shows C>=9, hcp=4..10, H<=4, S<=4
            when  system is brill
     5D     Preempt: nine or more diamonds
            shows D>=9, hcp=4..10, H<=4, S<=4
            when  system is brill
     3D     Preempt: six diamonds and four clubs, 4-8
            shows D=6, C=4, hcp=4..8
            when  !vul, seat<=2, style is bba
     3C     Preempt: six clubs and four diamonds, 4-8
            shows C=6, D=4, hcp=4..8
            when  !vul, seat<=2, style is bba

   after 3H (P)
     4H     Raise to game
            shows H>=4 | (H=3, tp(H)>=9) | (H=2, hcp>=15)

   after 3S (P)
     4S     Raise to game
            shows S>=4 | (S=3, tp(S)>=9) | (S=2, hcp>=15)

   after 3C (P)
     3N     To play: 16+, A or K of clubs, side suits stopped
            shows hcp>=16, has(A,C) | has(K,C), stop(S), stop(H), stop(D)
     4H     To play: seven hearts
            shows H>=7, hcp>=12
     4S     To play: seven spades
            shows S>=7, hcp>=12
     5C     Game in clubs: 17+ and a doubleton
            shows C>=2, hcp>=17
     5C     Game in clubs
            shows C>=4, shortest<=1 | hcp>=12 | (C>=3, hcp>=15, shortest<=1)
            when  !vul
     4C     Preemptive raise
            shows C>=3, hcp<=11
            when  !vul
     5C     Game in clubs
            shows C>=3, hcp>=15 | (C>=4, hcp>=12, shortest<=1)
            when  vul
     4C     Invitational raise
            shows C>=2, hcp=9..14
            when  vul

   after 3D (P)
     3N     To play: 16+, A or K of diamonds, side suits stopped
            shows hcp>=16, has(A,D) | has(K,D), stop(S), stop(H), stop(C)
     4H     To play: seven hearts
            shows H>=7, hcp>=12
     4S     To play: seven spades
            shows S>=7, hcp>=12
     5D     Game in diamonds: 17+ and a doubleton
            shows D>=2, hcp>=17
     5D     Game in diamonds
            shows D>=4, shortest<=1 | hcp>=12 | (D>=3, hcp>=15, shortest<=1)
            when  !vul
     4D     Preemptive raise
            shows D>=3, hcp<=11
            when  !vul
     5D     Game in diamonds
            shows D>=3, hcp>=15 | (D>=4, hcp>=12, shortest<=1)
            when  vul
     4D     Invitational raise
            shows D>=2, hcp=9..14
            when  vul

   after 3x (P)
     when x is not N
     P      No game: no fit, or not enough

   after 3x (P) 4x (P)
     when x is C | x is D
     P      No further bid

== rebids: Opener's rebid
   file: conventions/base/rebids.bid
   needs: responses
   skills: partnership_bidding/rebids, bidding_conventions/reverse_bids
   define nt_jump_to_game = cheapest_rank(S)<=13 | partner.last=2S | rho.last=2S
   define tw(x) = twalsh, x is C
   define bergen21 = gf21, we.gf, style21 is bergen
   define lawrence21 = gf21, we.gf, style21 is lawrence
   define schuler21 = gf21, we.gf, style21 is schuler
   define semi_1nt(x) = semi, gf21, x is H | x is S

   after 1x (P) 1y (P)
     when !tw(x)
     2y     Raise: 4+ {y}, minimum
            shows y>=4, tp(y)<=15
            when  style is not bba
     3y     Jump raise: 4+ {y}, 16-18
            shows y>=4, tp(y)=16..18
            when  y is H | y is S, style is not bba
     2y     Raise: 4+ {y}, minimum
            shows y>=4, hcp+length_points<=14
            when  style is bba
     3y     Jump raise: 4+ {y}, 15-17
            shows y>=4, hcp+length_points>=15, hcp<=17, hcp<=16 | tp(y)<=18
            when  y is H | y is S, style is bba
     3y     Jump raise: 4+ {y}, 16+
            shows y>=4, tp(y)>=16
            when  y is C | y is D
     2x     Rebids {x}: 6+, minimum
            shows x>=6, suit_points<=15
            when  x is H | x is S
     2x     Rebids {x}: 5+, minimum
            shows x>=5, suit_points<=15
            when  x is C | x is D, x>=6
     3x     Jump rebid: 6+ {x}, 16-18
            shows x>=6, suit_points=16..18
            when  style is not bba
     3x     Jump rebid: 6+ {x}, 15-18
            shows x>=6, hcp=15..18
            when  style is bba
     2x     Rebids {x}: 5+
            shows x>=5, suit_points<=18
            when  x is C | x is D
     1N     12-14 HCP, balanced
            shows balanced | shape 5-4-2-2, hcp=12..14, y<=3
     2N     18+ HCP, balanced
            shows balanced | shape 5-4-2-2, hcp>=18, y<=3
     2N     18-19 HCP, balanced
            shows balanced, hcp=18..19, y<=3
     1N     Minimum, no fit
            shows hcp<=14, y<=3
     3x     Jump rebid: 6+ {x}, 16+
            shows x>=6, suit_points>=16
     2N     15-17 HCP, balanced
            shows balanced, hcp=15..17, y<=3

   after 1x (P) 1M (P)
     when !tw(x)
     4M     Game raise: 4+ {M}, 19+
            shows M>=4, tp(M)>=19
            when  style is not bba
     4M     Game raise: 4+ {M}
            shows M>=4, hcp>=18 | (hcp>=17, tp(M)>=19)
            when  style is bba

   after 1C (P) 1D (P)
     when !tw(C)
     1N     12-14 HCP, balanced, may hold a 4-card major
            shows balanced | shape 5-4-2-2, hcp=12..14
            when  style is not bba, style is not standard, walsh
     1N     12-14 HCP, balanced, no four-card major
            shows balanced | shape 5-4-2-2, hcp=12..14, H<=3, S<=3
            when  style is standard | !walsh
     1H     4+ hearts, up to 18
            shows H>=4, suit_points<=18, H>=S
            when  style is not bba | S>=4 | !walsh
     1S     4+ spades, up to 18
            shows S>=4, suit_points<=18, S>H
            when  style is not bba | !walsh
     2H     Jump shift: 4+ hearts, 19+
            shows H>=4, suit_points>=19
            when  style is not bba
     2S     Jump shift: 4+ spades, 19+
            shows S>=4, suit_points>=19
            when  style is not bba
     1N     12-17 HCP, not both majors
            shows hcp=12..17, H<=4, S<=4, H<=3 | S<=3, C<=5, D<=4, shortest>=2 | C=5
            when  style is bba, walsh
     2H     Jump shift: 4+ hearts, 18+
            shows H>=4, hcp>=18, H>=S
            when  style is bba
     2S     Jump shift: 4+ spades, 18+
            shows S>=4, hcp>=18, S>H
            when  style is bba

   after 1C (P) 1H (P)
     when !tw(C)
     1S     4+ spades, up to 18
            shows S>=4, suit_points<=18
            when  H<=3
     2D     Reverse: 4+ diamonds, longer clubs, 17+
            shows D>=4, C>D, suit_points>=17
     2S     Jump shift: 4+ spades, 19+
            shows S>=4, suit_points>=19
     3D     Jump shift: 4+ diamonds, 19+
            shows D>=4, suit_points>=19

   after 1C (P) 1S (P)
     when !tw(C)
     2D     Reverse: 4+ diamonds, longer clubs, 17+
            shows D>=4, C>D, suit_points>=17
     2H     Reverse: 4+ hearts, longer clubs, 17+
            shows H>=4, C>H, suit_points>=17
     3D     Jump shift: 4+ diamonds, 19+
            shows D>=4, suit_points>=19
     3H     Jump shift: 4+ hearts, 19+
            shows H>=4, suit_points>=19

   after 1D (P) 1H (P)
     1S     4+ spades, up to 18
            shows S>=4, suit_points<=18
            when  H<=3
     1N     12-14 HCP, balanced
            shows balanced, hcp=12..14, H<=3
            when  style is not bba
     1N     12-13 HCP, balanced
            shows balanced, hcp=12..13, H<=3, C=4
            when  style is bba
     2C     4+ clubs, up to 18
            shows C>=4, suit_points<=18, D>=C
     2S     Jump shift: 4+ spades, 19+
            shows S>=4, suit_points>=19
     3C     Jump shift: 4+ clubs, 19+
            shows C>=4, suit_points>=19

   after 1D (P) 1S (P)
     2C     4+ clubs, up to 18
            shows C>=4, suit_points<=18, D>=C
     1N     12-14 HCP, balanced
            shows balanced, hcp=12..14, S<=3
            when  style is not bba
     1N     12-13 HCP, balanced
            shows balanced, hcp=12..13, S<=3, C=4
            when  style is bba
     2H     Reverse: 4+ hearts, longer diamonds, 17+
            shows H>=4, D>H, suit_points>=17
     3C     Jump shift: 4+ clubs, 19+
            shows C>=4, suit_points>=19
     3H     Jump shift: 4+ hearts, 19+
            shows H>=4, suit_points>=19

   after 1H (P) 1S (P)
     2C     4+ clubs, up to 18
            shows C>=4, suit_points<=18
     2D     4+ diamonds, up to 18
            shows D>=4, suit_points<=18, D>=C | C<=3
     3C     Jump shift: 4+ clubs, 19+
            shows C>=4, suit_points>=19
     3D     Jump shift: 4+ diamonds, 19+
            shows D>=4, suit_points>=19

   after 1x (P) 1N (P)
     P      Minimum, to play
            shows suit_points<=15
            when  !semi_1nt(x)
     P      Balanced, no game
            shows balanced, hcp<=17
            when  !semi_1nt(x)
     2x     Rebids {x}: 5+, 16-18
            shows x>=5, suit_points=16..18
     2x     Rebids {x}: 6+, minimum
            shows x>=6, suit_points<=15
     3x     Jump rebid: 6+ {x}, 16-18
            shows x>=6, suit_points=16..18
            when  style is not bba
     2N     18-19 HCP, balanced
            shows balanced, hcp=18..19
     3N     Game: 18+
            shows hcp>=18
     3x     Jump rebid: 6+ {x}, 15-18
            shows x>=6, hcp=15..18
            when  style is bba

   after 1S (P) 1N (P)
     2C     4+ clubs, up to 18
            shows C>=4, suit_points<=18
            when  !(we.forcing=round | semi_1nt(S))
     2D     4+ diamonds, up to 18
            shows D>=4, suit_points<=18, D>=C | C<=3
            when  !(we.forcing=round | semi_1nt(S))
     2H     4+ hearts, up to 18
            shows H>=4, suit_points<=18
     3C     Jump shift: 4+ clubs, 19+
            shows C>=4, suit_points>=19
     3D     Jump shift: 4+ diamonds, 19+
            shows D>=4, suit_points>=19
     3H     Jump shift: 4+ hearts, 19+
            shows H>=4, suit_points>=19
     3H     Jump shift: 4+ hearts, 17+
            shows H>=4, suit_points>=17
            when  style is bba
     3C     Jump shift: 4+ clubs, 18+
            shows C>=4, suit_points>=18
            when  style is bba
     3D     Jump shift: 4+ diamonds, 18+
            shows D>=4, suit_points>=18
            when  style is bba
     4H     5-5 in the majors, 16+
            shows H>=5, hcp>=16
            when  style is bba

   after 1H (P) 1N (P)
     2C     4+ clubs, up to 18
            shows C>=4, suit_points<=18
            when  !(we.forcing=round | semi_1nt(H))
     2D     4+ diamonds, up to 18
            shows D>=4, suit_points<=18, D>=C | C<=3
            when  !(we.forcing=round | semi_1nt(H))
     2S     Reverse: 4+ spades, longer hearts, 17+
            shows S>=4, H>S, suit_points>=17
     3C     Jump shift: 4+ clubs, 19+
            shows C>=4, suit_points>=19
     3D     Jump shift: 4+ diamonds, 19+
            shows D>=4, suit_points>=19
     3C     Jump shift: 4+ clubs, 18+
            shows C>=4, suit_points>=18
            when  style is bba
     3D     Jump shift: 4+ diamonds, 18+
            shows D>=4, suit_points>=18
            when  style is bba

   after 1D (P) 1N (P)
     2C     4+ clubs, up to 18
            shows C>=4, suit_points<=18
     2H     Reverse: 4+ hearts, longer diamonds, 17+
            shows H>=4, D>H, suit_points>=17
     2S     Reverse: 4+ spades, longer diamonds, 17+
            shows S>=4, D>S, suit_points>=17

   after 1C (P) 1N (P)
     2D     Reverse: 4+ diamonds, longer clubs, 17+
            shows D>=4, C>D, suit_points>=17
     2H     Reverse: 4+ hearts, longer clubs, 17+
            shows H>=4, C>H, suit_points>=17
     2S     Reverse: 4+ spades, longer clubs, 17+
            shows S>=4, C>S, suit_points>=17

   after 1m (P) 1y (P) | 1m (P) 2y (P)
     3N     18-21 with six or more {m}: to play
            shows m>=6, hcp=18..21
            when  y is not m, !weak_js | !partner.jumped

   after 1M (P) 1y (P) | 1M (P) 2y (P)
     4M     19+ with six or more {M}: game
            shows M>=6, hcp+length_points>=19
            when  y is not M, style is not bba, !we.gf
     4M     Game: seven {M} and 13+, or six and 19+
            shows M>=6, (M>=7, hcp>=13) | hcp>=19
            when  y is not M, style is bba, !we.gf

   after 1m (P) 1N (P)
     3N     18-21 with six or more {m}: to play
            shows m>=6, hcp=18..21

   after 1M (P) 1N (P)
     when semi_1nt(M)
     P      Semi-forcing 1NT: balanced minimum, to play
            shows balanced, hcp<=14

   after 1M (P) 1N (P)
     when we.forcing=round | semi_1nt(M)
     2C     Forcing 1NT: clubs, three or more, up to 18
            shows C>=3, suit_points<=18
            when  C>=4
     2D     Forcing 1NT: diamonds, three or more, up to 18
            shows D>=3, suit_points<=18
            when  D>=4, D>=C | C<=3
     2C     Forcing 1NT: three or more clubs
            shows C>=3, C>=D, suit_points<=18, M<=5
     2D     Forcing 1NT: three or more diamonds
            shows D>=3, D>C, suit_points<=18, M<=5
     2N     Forcing 1NT: 18-19, balanced
            shows balanced, hcp=18..19
     2M     Rebids {M}: six or more, minimum
            shows M>=6, suit_points<=15
     2M     Rebids {M}: six or more, minimum
            shows M>=5, suit_points<=15, C<=2, D<=2

   after 1M (P) 1N (P)
     4M     19+ with six or more {M}: game
            shows M>=6, hcp+length_points>=19
            when  style is not bba
     4M     Game: seven {M} and 13+, or six and 19+
            shows M>=6, (M>=7, hcp>=13) | hcp>=19
            when  style is bba

   after 1x (P) 2x (P)
     when !inverted | x is H | x is S
     P      Minimum: no game
            shows tp(x)<=16, tp(x)<=14 | x is C | x is D | partner.tp(x).max<=10
            when  style is not bba | x is C | x is D
     3x     Invitation: game try in {x}
            shows tp(x)=17..18 | (tp(x)=15..16, x is H | x is S, partner.tp(x).max>=11)
            when  style is not bba | x is C | x is D

   after 1M (P) 2M (P)
     4M     Game: 19+ with the fit
            shows tp(M)>=19
            when  style is not bba
     P      Minimum: no game
            shows hcp<=15, M<=5 | hcp<=13
            when  style is bba
     3M     Invitation: game try in {M}
            shows (hcp=16, M<=5, tp(M)<=18) | (hcp=14..15, M>=6)
            when  style is bba
     4M     Game: 17+, or 16 with shape
            shows hcp>=17 | (hcp=16, M>=6 | tp(M)>=19)
            when  style is bba

   after 1m (P) 2m (P)
     when !inverted
     2N     18-19 HCP, balanced
            shows balanced, hcp=18..19
     3N     20-21 HCP, balanced
            shows balanced, hcp>=20
     3N     Nine tricks: a running {m}, the other suits stopped
            shows m>=6, quality(m)>=2, hcp>=16, stop(C) | m is C, stop(D) | m is D, stop(H), stop(S)
     5{m}   Game: 19+ support points, no notrump
            shows tp(m)>=19

   after 1M (P) 3M (P)
     4M     Accepts the limit raise
            shows tp(M)>=15
     P      Declines: minimum
            shows tp(M)<=14

   after 1m (P) 3m (P)
     3N     Accepts, balanced: 14+
            shows hcp>=14, balanced | semibalanced
     5m     Accepts, unbalanced: game in the minor
            shows hcp>=14
     P      Declines: minimum
            shows hcp<=13

   after 1m (P) 2N (P)
     3N     Accepts: 14+
            shows hcp>=14
     P      Declines: 12-13
            shows hcp<=13

   after 1y (P) 2x (P) 2z (P) 2N (P)
     when x is not y, we.gf
     6N     Slam in notrump
            shows points+partner.points.min>=33
     4N     Quantitative: invites 6NT
            shows points+partner.points.min>=31
            when  quant_4nt
     3N     Game: no extras
            shows points+partner.points.min<=30

   after 1M (P) 2x (P) 2M (P) 2N (P)
     when x is not M, lawrence21
     3M     Six or more {M}, no extras
            shows M>=6, points+partner.points.min<=30

   after 1m (P) 1y (P) 3m (P) 4m (P)
     5{m}   Accepts: a maximum, 17+
            shows hcp>=17
            when  !two_bare_suits
     P      Declines: minimum, or two bare side suits

   after 1m (P) 1M (P) 3m (P) 3M (P)
     4{M}   Three-card support
            shows M>=3
     3N     No three-card support
            shows M<=2

   after 1M (P) 2x (P)
     when x is not M, !weak_js | !partner.jumped
     2N     Waiting: 5+ {M}
            shows M>=5
            when  bergen21
     2M     Rebids {M}: 6+, any strength
            shows M>=6, x<=2 | x is C | x is D
            when  bergen21
     3M     Jump rebid: 6+ {M}, 16-18
            shows M>=6, suit_points=16..18
            when  bergen21
     2M     Rebids {M}: 5+, any strength
            shows M>=5
            when  lawrence21
     2N     Balanced, the unbid suits stopped
            shows balanced, hcp<=17, x<=2 | x is C | x is D, stop(C) | x is C, stop(D) | x is D, stop(H) | x is H | M is H, stop(S) | x is S | M is S
            when  lawrence21
     2M     Rebids {M}: exactly five
            shows M=5
            when  schuler21
     2N     Schuler shift: six or more {M}
            shows M>=6
            when  schuler21
     2M     Rebids {M}: 6+, minimum
            shows M>=6, suit_points<=15
            when  !(gf21, we.gf)
     2M     Rebids {M}: 6+, minimum
            shows M>=5, suit_points<=18
            when  !(gf21, we.gf)
     3M     Jump rebid: 6+ {M}, 16-18
            shows M>=6, suit_points=16..18
            when  !bergen21
     3x     Raise: 4+ {x}
            shows x>=4
     2N     15-17 HCP, balanced
            shows balanced, hcp=15..17
            when  !(gf21, we.gf)
     3N     18-19 HCP, balanced
            shows balanced, hcp=18..19

   after 1S (P) 2C (P)
     2D     4+ diamonds
            shows D>=4
     2H     4+ hearts
            shows H>=4

   after 1S (P) 2D (P)
     2H     4+ hearts
            shows H>=4
     3C     4+ clubs, extras
            shows C>=4, suit_points>=16
            when  !bergen21
     3C     4+ clubs, no extras promised
            shows C>=4
            when  bergen21

   after 1S (P) 2H (P)
     3H     Raise: 3+ hearts
            shows H>=3
     4H     Game raise: 3+ hearts, 14-17
            shows H>=3, suit_points=14..17
     3C     4+ clubs, extras
            shows C>=4, suit_points>=16
            when  !bergen21
     3D     4+ diamonds, extras
            shows D>=4, suit_points>=16
            when  !bergen21
     3C     4+ clubs, no extras promised
            shows C>=4
            when  bergen21
     3D     4+ diamonds, no extras promised
            shows D>=4
            when  bergen21

   after 1H (P) 2C (P)
     2D     4+ diamonds
            shows D>=4
     2S     Reverse: 4+ spades, longer hearts, 17+
            shows S>=4, H>S, suit_points>=17
            when  !bergen21
     2S     4+ spades, no extras promised
            shows S>=4
            when  bergen21

   after 1H (P) 2D (P)
     2S     Reverse: 4+ spades, longer hearts, 17+
            shows S>=4, H>S, suit_points>=17
            when  !bergen21
     2S     4+ spades, no extras promised
            shows S>=4
            when  bergen21
     3C     4+ clubs, extras
            shows C>=4, suit_points>=16
            when  !bergen21
     3C     4+ clubs, no extras promised
            shows C>=4
            when  bergen21

   after 1D (P) 2C (P)
     2D     Rebids diamonds: minimum
            shows D>=5, suit_points<=15
     3D     Jump rebid: 6+ diamonds, 16-18
            shows D>=6, suit_points=16..18
     2D     Rebids diamonds: 5+
            shows D>=5, suit_points<=18
     3C     Raise: 4+ clubs
            shows C>=4
     2H     4+ hearts
            shows H>=4
     2S     4+ spades
            shows S>=4
     2N     12-14 HCP, balanced
            shows balanced, hcp=12..14
     3N     18-19 HCP, balanced
            shows balanced, hcp=18..19

   after 1x (P) 1N (P) 2z (P) 3x (P)
     when z is not x
     4x     Game in the fit: 19+
            shows suit_points>=19
            when  x is H | x is S
     5x     Game in {x}: 19+ with six
            shows x>=6, suit_points>=20
            when  x is C | x is D
     3N     Game in notrump: 19+
            shows hcp>=19
            when  x is C | x is D
     P      Minimum: to play
            shows suit_points<=19

   after 1x (P) 1y (P) 2z (P) 2N (P)
     when z is not x, z is not y, partner.points<=10, shown.suit_points>=17
     3N     Game: 16+
            shows hcp>=16

   after 1x (P) 3y (P)
     when y is not x, we.trump is none, !weak_js3
     P      Minimum, no fit
            shows hcp<=13
     3N     Accepts: 14+, to play notrump
            shows hcp>=14, y<=2 | y is C | y is D
     4y     Accepts in the fit: 14+
            shows y>=2, suit_points>=14
            when  y is H | y is S
     4x     Accepts in {x}: seven, or six strong
            shows x>=7 | (x>=6, top5(x)>=4), hcp>=14, y<=1 | y is C | y is D
            when  x is H | x is S

   after 1x (P) 1y (P) 1z (P) 1M (P)
     when !tw(x)
     2M     Raise: 4+ {M}, minimum
            shows M>=4, tp(M)<=15
     3M     Jump raise: 4+ {M}, 16-18
            shows M>=4, tp(M)=16..18
     4M     Game raise: 4+ {M}, 19+
            shows M>=4, tp(M)>=19
     1N     Minimum, no fit for {M}
            shows M<=3, hcp<=15
     2N     16-18, no fit for {M}
            shows M<=3, hcp=16..18
     2x     Six or more {x}
            shows x>=6, suit_points<=15

   after (any auction)
     when asked signoff, !partner.opened
     P      No further bid
     2x     Six or more {x}: to play
            shows x>=6, suit_points<=15
            when  maybe partner.x<=2
     3x     Invitation: six or more {x}, 16-18
            shows x>=6, suit_points=16..18
     3x     Invitation: 3+ {x}, 16-18
            shows x>=3, suit_points=16..18
            when  partner.x>=5
     2y     Preference: three or more {y}
            shows y>=3
            when  partner.y>=5
     4M     Game: 6+ {M}, 19+
            shows M>=6, suit_points>=19
     4M     Game: 3+ {M}, 19+
            shows M>=3, suit_points>=19
            when  partner.M>=4

   after (any auction)
     when asked signoff, partner.opened
     P      No further bid

   after (any auction)
     when asked invite(M)
     4M     Accepts, in the fit
            shows M>=8-partner.M.min, points>=24-partner.points.min
     3N     Accepts, no fit
            shows M<8-partner.M.min, strength>=game
     3M     Declines, in the fit
            shows M>=8-partner.M.min, points<=23-partner.points.min
     P      Declines
            shows strength<=invite, M<8-partner.M.min | points<=23-partner.points.min

   after (any auction)
     when asked invite(M), partner.tp(M).min>=10
     4M     Accepts, in the fit
            shows M>=8-partner.M.min, tp(M)>=25-partner.tp(M).min
     P      Declines: a minimum
            shows M>=8-partner.M.min, tp(M)<=24-partner.tp(M).min

   after (any auction)
     when answered invite(M), partner.last=3{M}
     P      No further bid

   after (any auction)
     when asked invite(m)
     P      Declines: minimum
     3N     Accepts, in notrump: 14+
            shows hcp>=14, balanced | semibalanced
     5m     Accepts in {m}: 18+ with the fit
            shows hcp>=18, m>=5

   after 1x (*) 1z (*)
     when they.bid, z is not x
     cheapest(z) Raise: four or more {z}, minimum
            shows z>=4, tp(z)<=15
            when  partner.z>=4
     jump(z) Jump raise: four or more {z}, 16-18
            shows z>=4, tp(z)=16..18
            when  partner.z>=4, z is H | z is S
     jump(z) Jump raise: four or more {z}, 16+
            shows z>=4, tp(z)>=16
            when  partner.z>=4, z is C | z is D
     4{z}   Game raise: four or more {z}, 19+
            shows z>=4, tp(z)>=19
            when  partner.z>=4, z is H | z is S
     cheapest(x) Rebids {x}: six or more, minimum
            shows x>=6, suit_points<=15
            when  x is H | x is S
     cheapest(x) Rebids {x}: 5+, minimum
            shows x>=5, suit_points<=15
            when  x is C | x is D, x>=6
     jump(x) Jump rebid: six or more {x}, 16-18
            shows x>=6, suit_points=16..18
     4{x}   Game: six or more {x}, 19+
            shows x>=6, suit_points>=19
            when  x is H | x is S
     P      No further bid

   after 1x (*) 1z (P)
     when they.bid, z is not x
     1H     Four or more hearts, up to 18
            shows H>=4, suit_points<=18
            when  x is not H, z is not H, maybe lho.H<=4, maybe rho.H<=4
     1S     Four or more spades, up to 18
            shows S>=4, suit_points<=18
            when  x is not S, z is not S, maybe lho.S<=4, maybe rho.S<=4
     cheapest(C) Four or more clubs, up to 18
            shows C>=4, suit_points<=18
            when  x is not C, z is not C, maybe lho.C<=4, maybe rho.C<=4
     cheapest(D) Four or more diamonds, up to 18
            shows D>=4, suit_points<=18
            when  x is H | x is S, z is not D, maybe lho.D<=4, maybe rho.D<=4
     2H     Reverse: four or more hearts, longer {x}, 17+
            shows H>=4, x>H, suit_points>=17
            when  x is C | x is D, z is not H, maybe lho.H<=4, maybe rho.H<=4
     2S     Reverse: four or more spades, longer {x}, 17+
            shows S>=4, x>S, suit_points>=17
            when  x is not S, z is not S, maybe lho.S<=4, maybe rho.S<=4
     2D     Reverse: four or more diamonds, longer clubs, 17+
            shows D>=4, C>D, suit_points>=17
            when  x is C, z is not D, maybe lho.D<=4, maybe rho.D<=4
     cheapest(x) Rebids {x}: 5+
            shows x>=5, suit_points<=18
     cheapest(x) Rebids {x}

   after 1x (1y) 1z (P) | 1x (2y) 1z (P)
     when y is not x, z is not x, z is not y
     cheapest(N) 12-14 balanced with a stopper in {y}
            shows balanced | shape 5-4-2-2, hcp=12..14, z<=3
            when  stop(y)
     jump(N) 18-19 balanced with a stopper in {y}
            shows balanced, hcp=18..19, z<=3
            when  nt_jump_to_game, stop(y)
     3N     Game: 19+ with a stopper in {y}
            shows hcp>=19, stop(y), z<=3
     cheapest(y) Cue bid: 19+, forcing to game  [alert]  [artificial]
            shows suit_points>=19

   after 1x (X) 1z (P)
     when z is not x
     cheapest(N) 12-14 balanced
            shows balanced | shape 5-4-2-2, hcp=12..14, z<=3
     jump(N) 18-19 balanced
            shows balanced, hcp=18..19, z<=3
            when  nt_jump_to_game

   after 1x (X) 1z (1y)
     when z is not x, y is not x, y is not z
     X      Strong hand: 18+
            shows hcp>=18
            when  !support_x | z is C | z is D | !((support_through is none, rho.last<=2{z}) | rho.last<=support_through)

   after 1x (X) 1z (1y) X (P) * (P)
     when z is not x, y is not x, y is not z, !answered support
     cheapest(N) 18-19 balanced with a stopper in {y}
            shows balanced, hcp=18..19, stop(y)
     3N     20+ balanced with a stopper in {y}
            shows balanced, hcp>=20, stop(y)
     cheapest(x) Six or more {x}, the strong hand
            shows x>=6
     P      No further bid

   after 1x (*) 2z (*) | 1x (*) 3z (*) | 1x (*) 4z (*)
     when they.bid, z is not x, partner.named(z)
     cheapest(z) Raise: three or more {z}
            shows z>=3, tp(z)<=17
            when  partner.z>=5
     cheapest(z) Raise: four or more {z}, minimum
            shows z>=4, tp(z)<=17
            when  partner.z>=4, maybe partner.z<=4
     4{z}   Game raise: 18+ with the fit
            shows z>=3, tp(z)>=18
            when  partner.z>=4, z is H | z is S
     cheapest(x) Rebids {x}: six or more, minimum
            shows x>=6, suit_points<=15
            when  x is H | x is S
     cheapest(x) Rebids {x}: 5+, minimum
            shows x>=5, suit_points<=15
            when  x is C | x is D, x>=6
     jump(x) Jump rebid: six or more {x}, 16-18
            shows x>=6, suit_points=16..18
     4{x}   Game: six or more {x}, 19+
            shows x>=6, suit_points>=19
            when  x is H | x is S
     P      Minimum, no fit
            shows suit_points<=15
     cheapest(x) Rebids {x}: 5+
            shows x>=5
     cheapest(S) Four or more spades
            shows S>=4, suit_points<=18
            when  x is not S, z is not S, maybe lho.S<=4, maybe rho.S<=4, we.forcing=round, partner.z>=5
     cheapest(H) Four or more hearts
            shows H>=4, suit_points<=18
            when  x is not H, z is not H, maybe lho.H<=4, maybe rho.H<=4, we.forcing=round, partner.z>=5
     cheapest(z) Raise with extras: 18+, forcing to game
            shows z>=3, tp(z)>=18
            when  partner.z>=5, new_suit_forcing
     cheapest(x) Rebids {x}
            when  we.forcing=round, partner.z>=5
     P      No further bid

   after 1x (1y) 2z (P) | 1x (2y) 2z (P) | 1x (2y) 3z (P) | 1x (3y) 3z (P)
     when y is not x, z is not x, z is not y
     cheapest(N) Balanced with a stopper in {y}, minimum
            shows balanced | shape 5-4-2-2, hcp<=15, z<=3
            when  stop(y)
     jump(N) 16-18 balanced with a stopper in {y}
            shows balanced, hcp=16..18, z<=3
            when  nt_jump_to_game, stop(y)
     3N     Game: 17+ with a stopper in {y}
            shows hcp>=17, stop(y)
     cheapest(y) Cue bid: 18+, forcing to game  [alert]  [artificial]
            shows suit_points>=18

   after 1x (X) 2z (P)
     when z is not x
     cheapest(N) Balanced, minimum
            shows balanced | shape 5-4-2-2, hcp<=15, z<=3

   after 1x (*) 2x (*)
     when they.bid
     P      Minimum: no game
            shows tp(x)<=16
     cheapest(x) Invitation: 17-18 with the fit
            shows tp(x)=17..18
     4{x}   Game: 19+ with the fit
            shows tp(x)>=19
            when  x is H | x is S
     3N     Game: 19+, balanced
            shows balanced, hcp>=19, stop(they.strain)
            when  x is C | x is D, they.strain is not none, they.strain is not N
     3N     Game: 19+, balanced
            shows balanced, hcp>=19
            when  x is C | x is D, they.strain is none | they.strain is N
     P      No further bid

   after 1x (*) 3x (*)
     when they.bid
     4{x}   Game: 19+
            shows tp(x)>=19
            when  x is H | x is S
     5{x}   Game: 19+
            shows tp(x)>=19
            when  x is C | x is D
     P      No further bid

   after 1x (2y) 3x (P)
     when y is not x, !partner.jumped
     3N     Game: 16+ with a stopper in {y}
            shows hcp>=16, stop(y)
            when  x is C | x is D
     4{x}   Game: 17+ support points
            shows tp(x)>=17
            when  x is H | x is S
     5{x}   Game in the minor: 18+
            shows hcp>=18
            when  x is C | x is D

   after 1x (*) 4x (*)
     when they.bid, x is C | x is D
     5{x}   Game: 16+ with the fit
            shows hcp>=16
     P      No game
            shows hcp<=15

   after 1x (*) 1N (*)
     when they.bid
     P      Minimum
            shows suit_points<=15
     cheapest(x) Rebids {x}: six or more, minimum
            shows x>=6, suit_points<=15
     jump(x) Jump rebid: six or more {x}, 16-18
            shows x>=6, suit_points=16..18
     jump(N) 18-19 balanced
            shows balanced, hcp=18..19
            when  nt_jump_to_game
     4{x}   Game: six or more {x}, 19+
            shows x>=6, suit_points>=19
            when  x is H | x is S
     cheapest(N) 16-17: invites 3NT
            shows hcp=16..17
            when  !lho.last=X
     jump(N) Game: 18+
            shows hcp>=18
            when  nt_jump_to_game, !lho.last=X
     P      No further bid

   after 1x (X) XX (*)
     cheapest(x) Rebids {x}: six or more
            shows x>=6, suit_points<=18
     cheapest(S) Five or more spades
            shows S>=5, suit_points<=18
            when  x is not S, maybe lho.S<=4, maybe rho.S<=4
     cheapest(H) Five or more hearts
            shows H>=5, S<=4, suit_points<=18
            when  x is not H, maybe lho.H<=4, maybe rho.H<=4
     cheapest(D) Five or more diamonds
            shows D>=5, S<=4, H<=4, suit_points<=18
            when  x is not D, maybe lho.D<=4, maybe rho.D<=4
     cheapest(C) Five or more clubs
            shows C>=5, S<=4, H<=4, suit_points<=18
            when  x is not C, maybe lho.C<=4, maybe rho.C<=4
     P      No further bid

   after 1x (*) P (*)
     when they.bid, maybe lho.hcp<=14, maybe rho.hcp<=14
     cheapest(x) Rebids {x}: six or more, extras
            shows x>=6, suit_points=13..18

   after 1x (*) P (*)
     when they.bid
     P      No further bid

   after 1x (1y) P (P) | 1x (2y) P (P) | 1x (3y) P (P)
     when y is not x
     X      Reopening double: short in {y}, support for the other suits
            shows y<=2, hcp>=12, (S>=3 | x is S | y is S, H>=3 | x is H | y is H, D>=3 | x is D | y is D, C>=3 | x is C | y is C) | hcp>=16
     cheapest(S) Five or more spades, 14+
            shows S>=5, suit_points>=14
            when  x is not S, y is not S
     cheapest(H) Five or more hearts, 14+
            shows H>=5, S<=4, suit_points>=14
            when  x is not H, y is not H
     cheapest(D) Five or more diamonds, 14+
            shows D>=5, S<=4, H<=4, suit_points>=14
            when  x is not D, y is not D
     cheapest(C) Five or more clubs, 14+
            shows C>=5, S<=4, H<=4, D<=4, suit_points>=14
            when  x is not C, y is not C
     cheapest(N) 18-19 balanced with a stopper in {y}
            shows balanced, hcp=18..19
            when  stop(y)

   after (any auction)
     when asked nt_invite, !partner.opened
     3S     Six or more spades: not a maximum
            shows S>=6, strength<=invite
     4S     Six or more spades: accepts
            shows S>=6, strength>=game
     3H     Six or more hearts: not a maximum
            shows H>=6, S<=3, strength<=invite
     4H     Six or more hearts: accepts
            shows H>=6, S<=3, strength>=game

== responder-rebids: Responder's second call
   file: conventions/base/responder-rebids.bid
   needs: rebids
   skills: partnership_bidding/responders_rebid, bidding_conventions/fourth_suit_forcing

   after 1x (P) 1y (P) 1N (P)
     when !tw(x)
     P      Weak: no game
            shows points<=10
     2y     Weak: 6+ {y}
            shows y>=6, points<=10
            when  y is H | y is S
     3y     Invitational: 6+ {y}, 11-12
            shows y>=6, points=11..12
            when  !(twoway_sw | xyz)
     2N     Invitational: 11-12
            shows points=11..12, y<=5
            when  !(twoway_sw | xyz)
     3N     Game: 13+
            shows points>=13, y<=5 | y is C | y is D
     2x     Weak: 5+ {x}
            shows x>=5, points<=10
            when  x is H | x is S | (x is C, !checkback, !roudi, !(twoway_sw | xyz)) | (x is D, !(twoway_sw | xyz))

   after 1x (P) 1M (P) 1N (P)
     when !tw(x)
     4M     Game: 6+ {M}
            shows M>=6, points>=13

   after 1M (P) 1y (P) 1N (P)
     3M     Invitational: 3 {M}, 11-12 support points
            shows M=3, tp(M)=11..12
     4M     Game in opener's major: 3+ {M}, 13+ support points
            shows M>=3, tp(M)>=13

   after 1C (P) 1D (P) 1N (P)
     when !tw(C)
     2H     Responder's reverse: 4+ hearts, 5+ diamonds, game forcing
            shows H>=4, D>=5, points>=13
     2S     Responder's reverse: 4+ spades, 5+ diamonds, game forcing
            shows S>=4, D>=5, points>=13

   after 1C (P) 1H (P) 1N (P)
     when !tw(C)
     2D     4+ diamonds, 5+ hearts, not forcing
            shows D>=4, H>=5, points<=12
            when  !nmf, !(twoway_sw | xyz)
     2S     Responder's reverse: 4+ spades, 5+ hearts, game forcing
            shows S>=4, H>=5, points>=13

   after 1C (P) 1S (P) 1N (P)
     when !tw(C)
     3H     Four hearts, five spades, game forcing
            shows H>=4, S>=5, points>=13
     2D     4+ diamonds, 5+ spades, not forcing
            shows D>=4, S>=5, points<=12
            when  !nmf, !(twoway_sw | xyz)
     2H     4+ hearts, 5+ spades, not forcing
            shows H>=4, S>=5, points<=12

   after 1D (P) 1H (P) 1N (P)
     2C     4+ clubs, 5+ hearts, not forcing
            shows C>=4, H>=5, points<=12
            when  !nmf, !checkback, !roudi, !(twoway_sw | xyz)
     2S     Responder's reverse: 4+ spades, 5+ hearts, game forcing
            shows S>=4, H>=5, points>=13

   after 1D (P) 1S (P) 1N (P)
     3H     Four hearts, five spades, game forcing
            shows H>=4, S>=5, points>=13
     2C     4+ clubs, 5+ spades, not forcing
            shows C>=4, S>=5, points<=12
            when  !nmf, !checkback, !roudi, !(twoway_sw | xyz)
     2H     4+ hearts, 5+ spades, not forcing
            shows H>=4, S>=5, points<=12

   after 1H (P) 1S (P) 1N (P)
     2C     4+ clubs, 5+ spades, not forcing
            shows C>=4, S>=5, points<=12
            when  !checkback, !(twoway_sw | xyz)
     2D     4+ diamonds, 5+ spades, not forcing
            shows D>=4, S>=5, points<=12
            when  !(twoway_sw | xyz)

   after 1x (P) 1y (P) 2x (P)
     when !tw(x)
     P      Weak: no game
            shows points<=10
     2y     Weak: 6+ {y}
            shows y>=6, points<=10
     3y     Invitational: 6+ {y}, 11-12
            shows y>=6, points=11..12
     3x     Raise: 2+ {x}, 10-12
            shows x>=2, points=10..12
     3x     Raise: 3+ {x}, 7-9
            shows x>=3, points=7..9
            when  style is bba, x is C | x is D
     2N     Invitational: 11-12
            shows points=11..12, x<=1, y<=5
     3N     Game: 13+
            shows points>=13, x<=1 | x is C | x is D

   after 1M (P) 1y (P) 2M (P)
     4M     Game: 2+ {M}, 13+
            shows M>=2, points>=13

   after 1x (P) 1y (P) 2y (P)
     when !tw(x)
     P      Weak: no game
            shows tp(y)<=10
     3y     Invitational: 11-12
            shows tp(y)=11..12

   after 1x (P) 1M (P) 2M (P)
     when !tw(x)
     4M     Game: 13+
            shows tp(M)>=13

   after 1C (P) 1D (P) 2D (P)
     when !tw(C)
     3N     Game: 13+
            shows points>=13

   after 1C (P) 1D (P) 1H (P)
     when !tw(C)
     1S     4+ spades
            shows S>=4, H<=3

   after 1x (P) 1y (P) 1z (P)
     when !tw(x)
     1N     6-10, no fit
            shows points<=10, z<=3
     2x     Preference: 3+ {x}, weak
            shows x>=3, points<=10, z<=3
            when  !xyz
     2z     Raise: 4+ {z}, weak
            shows z>=4, points<=10
     3z     Invitational raise: 4+ {z}, 11-12
            shows z>=4, points=11..12
     2y     Weak: 6+ {y}
            shows y>=6, points<=10
            when  !xyz | y is H | y is S
     3y     Invitational: 6+ {y}, 11-12
            shows y>=6, points=11..12
            when  !xyz
     2N     Invitational: 11-12
            shows points=11..12, z<=3
            when  !xyz
     3N     Game: 13+
            shows points>=13, z<=3

   after 1x (P) 1y (P) 1M (P)
     when !tw(x)
     4M     Game raise: 4+ {M}, 13+
            shows M>=4, points>=13

   after 1x (P) 1y (P) 1z (P) 1M (P) 1N (P)
     when !tw(x)
     2N     Invitational: 11-12
            shows points=11..12
     3N     Game: 13+
            shows points>=13

   after 1x (P) 1y (P) 1z (P) 1M (P) 2M (P)
     when !tw(x)
     3M     Invitational: 11-12
            shows tp(M)=11..12
     4M     Game: 13+
            shows tp(M)>=13

   after 1x (P) 1y (P) 1z (P) 1M (P) 2x (P)
     when !tw(x)
     3N     Game: 13+
            shows points>=13

   after 1D (P) 1H (P) 1S (P)
     2C     5+ clubs, 8-10
            shows C>=5, points=8..10, S<=3
            when  !fsf_on, !xyz

   after 1x (P) 1y (P) 2z (P)
     when z is not x, z is not y, !tw(x)
     P      Weak: to play
            shows points<=10, z>=4 | z>x
     2x     Preference: weak
            shows x>=2, points<=10, x>=z | (z<=3, x is H) | (z<=3, x is S)
     2y     Weak: 6+ {y}
            shows y>=6, points<=10
     3z     Invitational raise: 4+ {z}
            shows z>=4, points=11..12
     3x     Invitational: 3+ {x}
            shows x>=3, points=11..12
     2N     Invitational: 11-12
            shows points=11..12, z<=3
            when  !we.forcing=round
     3N     Game: 13+
            shows points>=13, z<=3 | z is C | z is D
     3N     Game: 11+
            shows points>=11, z<=3 | z is C | z is D
            when  we.forcing=round
     2N     Minimum, no fit
            shows points<=10
            when  we.forcing=round

   after 1M (P) 1y (P) 2z (P)
     when z is not M, z is not y
     4M     Game in opener's major: 3+ {M}, 13+ support points
            shows M>=3, tp(M)>=13

   after 1x (P) 1y (P) 3x (P)
     when !tw(x)
     P      Weak: no game
            shows points<=8
     3N     Game: 9+
            shows points>=9, x<=1 | x is C | x is D

   after 1M (P) 1y (P) 3M (P)
     4M     Game: 2+ {M}, 8+
            shows M>=2, points>=8

   after 1x (P) 1y (P) 3y (P)
     when !tw(x)
     P      Weak: no game
            shows points<=8
     3N     Game: 8+
            shows points>=8
            when  y is not H, y is not S

   after 1x (P) 1M (P) 3M (P)
     when !tw(x)
     4M     Game: 9+
            shows points>=9

   after 1m (P) 1y (P) 3m (P)
     when !tw(m)
     4{m}   Invitational raise: 3+ {m}, 8
            shows m>=3, points=8

   after 1m (P) 1M (P) 3m (P)
     when !tw(m)
     3{M}   Five {M}, forcing: choose 3NT or 4{M}
            shows M=5, points>=9
     4{M}   Game: six or more {M}, 9+
            shows M>=6, points>=9

   after 1x (P) 1y (P) 2N (P)
     when !tw(x)
     P      Weak: no game
            shows points<=6
     3N     Game: 7+
            shows points>=7, y<=5 | y is C | y is D, hcp+partner.hcp.min<=31

   after 1x (P) 1M (P) 2N (P)
     when !tw(x)
     4M     Game: 6+ {M}
            shows M>=6, points>=7

   after 1M (P) 1y (P) 2N (P)
     4M     Game in opener's major: 3+ {M}
            shows M>=3, tp(M)>=7

   after 1x (P) 1N (P) 2z (P)
     when z is not x
     P      To play in {z}
            shows z>=4 | z>x
     3m     To play: six or more {m}
            shows m>=6, x<=1, z<=2
            when  m is not x, m is not z
     2x     Preference: 2+ {x}
            shows x>=2, x>=z | (z<=3, x is H) | (z<=3, x is S)
     3z     Raise: 4+ {z}, 9-10
            shows z>=4, points=9..10
     3z     Raise: 4+ {z}, 11+ points
            shows z>=4, points>=11
            when  z is C | z is D, x is not H | !imp2s

   after 1S (P) 1N (P) 2m (P)
     2H     To play: six or more hearts
            shows H>=6, S<=1, hcp<=10

   after 1M (P) 1N (P) 2z (P)
     when z is not M, shown.hcp.max>=11, !we.forcing=round
     2N     Invitational: 11-12, no fit
            shows hcp=11..12, M<=2, z<=3
     3M     Limit raise: three-card support, 10-12
            shows M=3, tp(M)=10..12
     3z     Raise: 4+ {z}, 11-12 HCP
            shows z>=4, hcp=11..12
            when  z is C | z is D

   after 1M (P) 1N (P) 2M (P)
     when shown.hcp.max>=11
     2N     Invitational: 11-12
            shows hcp=11..12, M<=2
     3M     Invitational: two or three {M}, 11-12
            shows M>=2, hcp=11..12

   after 1x (P) 1N (P) 2x (P)
     P      No game
            shows hcp<=10
     3x     Raise: 3+ {x}, invitational
            shows x>=3, points>=10
            when  x is C | x is D
     3x     Invitational raise: 2+ {x}, 8-10
            shows x>=2, hcp>=8
            when  x is H | x is S, shown.hcp.max<=10

   after 1x (P) 1N (P) 3x (P)
     P      No game
            shows points<=8
     3N     Game, no fit
            shows points>=9, x<=1 | x is C | x is D

   after 1M (P) 1N (P) 3M (P)
     4M     Game: 2+ {M}, 8+
            shows M>=2, points>=8

   after 1x (P) 1N (P) 2N (P)
     P      No game
            shows points<=6
     3N     Game: 7+
            shows points>=7

   after 1y (P) 2x (P) 2z (P)
     when x is not y, !(weak_js, two_level_jump(x,y))
     2N     Invitational, no fit: 11-12
            shows points=11..12, y<=2 | y is C | y is D
            when  !we.gf
     3N     Game, no fit
            shows points>=13, y+partner.y.min<=7 | y is C | y is D
            when  !we.gf
     3N     Game, no fit: 13-15
            shows points=13..15, y+partner.y.min<=7 | y is C | y is D
            when  we.gf
     2N     Game forcing, no fit: 16+
            shows points>=16, y+partner.y.min<=7 | y is C | y is D, z<=3
            when  we.gf
     3x     Invitational: 6+ {x}, 11-12
            shows x>=6, suit_points=11..12, y<=2 | y is C | y is D
            when  !we.gf
     2y     Preference: 2+ {y}
            shows y>=2, suit_points<=12
            when  !we.gf
     P      Minimum: no game
            shows suit_points<=12
     3x     Six or more {x}, game forcing
            shows x>=6
            when  we.gf
     2y     Preference: 2+ {y}, game forcing
            shows y>=2
            when  we.gf

   after 1M (P) 2x (P) 2z (P)
     when x is not M, !(weak_js, two_level_jump(x,M))
     4M     Game with support: no slam interest
            shows tp(M)=11..15, M>=3 | (M>=2, partner.M>=6)
     3M     Support for {M}, slam interest: forcing
            shows tp(M)>=16, M>=3 | (M>=2, partner.M>=6)

   after 1y (P) 2x (P) 2z (P)
     when x is not y, z is not y, z is H | z is S, !(weak_js, two_level_jump(x,y))
     4z     Raise: 4+ {z}, no slam interest
            shows z>=4, points=11..14
     3z     Raise: 4+ {z}, slam interest, forcing
            shows z>=4, points>=15

   after 1y (P) 2x (P) 3x (P)
     when x is not y, !(weak_js, two_level_jump(x,y))
     4x     Game in the fit
            shows suit_points>=11
            when  x is H | x is S
     3N     Game
            shows points>=12, y<=2 | y is C | y is D
            when  x is H | x is S | (x is C | y is C | stop(C) | partner.cued(C) | partner.C.min>=4 | shown.C.min>=4, x is D | y is D | stop(D) | partner.cued(D) | partner.D.min>=4 | shown.D.min>=4, x is H | y is H | stop(H) | partner.cued(H) | partner.H.min>=4 | shown.H.min>=4, x is S | y is S | stop(S) | partner.cued(S) | partner.S.min>=4 | shown.S.min>=4)
     P      Minimum: no game
            shows suit_points<=12

   after 1y (P) 2x (P) 3x (P)
     when x is C | x is D, x is not y, !(weak_js, two_level_jump(x,y))
     cheapest(C) Stopper in ♣, looking for 3NT
            when  x is not C, y is not C, cheapest_rank(C)<19, points>=12, stop(C), !(x is C | y is C | stop(C) | partner.cued(C) | partner.C.min>=4 | shown.C.min>=4, x is D | y is D | stop(D) | partner.cued(D) | partner.D.min>=4 | shown.D.min>=4, x is H | y is H | stop(H) | partner.cued(H) | partner.H.min>=4 | shown.H.min>=4, x is S | y is S | stop(S) | partner.cued(S) | partner.S.min>=4 | shown.S.min>=4)
     cheapest(D) Stopper in ♦, looking for 3NT
            when  x is not D, y is not D, cheapest_rank(D)<19, points>=12, stop(D), !(x is C | y is C | stop(C) | partner.cued(C) | partner.C.min>=4 | shown.C.min>=4, x is D | y is D | stop(D) | partner.cued(D) | partner.D.min>=4 | shown.D.min>=4, x is H | y is H | stop(H) | partner.cued(H) | partner.H.min>=4 | shown.H.min>=4, x is S | y is S | stop(S) | partner.cued(S) | partner.S.min>=4 | shown.S.min>=4)
     cheapest(H) Stopper in ♥, looking for 3NT
            when  x is not H, y is not H, cheapest_rank(H)<19, points>=12, stop(H), !(x is C | y is C | stop(C) | partner.cued(C) | partner.C.min>=4 | shown.C.min>=4, x is D | y is D | stop(D) | partner.cued(D) | partner.D.min>=4 | shown.D.min>=4, x is H | y is H | stop(H) | partner.cued(H) | partner.H.min>=4 | shown.H.min>=4, x is S | y is S | stop(S) | partner.cued(S) | partner.S.min>=4 | shown.S.min>=4)
     cheapest(S) Stopper in ♠, looking for 3NT
            when  x is not S, y is not S, cheapest_rank(S)<19, points>=12, stop(S), !(x is C | y is C | stop(C) | partner.cued(C) | partner.C.min>=4 | shown.C.min>=4, x is D | y is D | stop(D) | partner.cued(D) | partner.D.min>=4 | shown.D.min>=4, x is H | y is H | stop(H) | partner.cued(H) | partner.H.min>=4 | shown.H.min>=4, x is S | y is S | stop(S) | partner.cued(S) | partner.S.min>=4 | shown.S.min>=4)
     cheapest(y) No stopper to show below 3NT
            when  cheapest_rank(y)<19, points>=12, !(x is C | y is C | stop(C) | partner.cued(C) | partner.C.min>=4 | shown.C.min>=4, x is D | y is D | stop(D) | partner.cued(D) | partner.D.min>=4 | shown.D.min>=4, x is H | y is H | stop(H) | partner.cued(H) | partner.H.min>=4 | shown.H.min>=4, x is S | y is S | stop(S) | partner.cued(S) | partner.S.min>=4 | shown.S.min>=4)
     5x     Game in the minor: a suit unstopped
            shows points>=12
            when  !(x is C | y is C | stop(C) | partner.cued(C) | partner.C.min>=4 | shown.C.min>=4, x is D | y is D | stop(D) | partner.cued(D) | partner.D.min>=4 | shown.D.min>=4, x is H | y is H | stop(H) | partner.cued(H) | partner.H.min>=4 | shown.H.min>=4, x is S | y is S | stop(S) | partner.cued(S) | partner.S.min>=4 | shown.S.min>=4)

   after 1M (P) 2x (P) 3x (P)
     when x is not M, !(weak_js, two_level_jump(x,M))
     4M     Game with support
            shows tp(M)>=11, M>=3

   after 1y (P) 2x (P) 3z (P)
     when x is not y, z is not y, z is not x, !(weak_js, two_level_jump(x,y))
     3N     Game, no fit
            shows points>=10, y<=2 | y is C | y is D

   after 1M (P) 2x (P) 3z (P)
     when x is not M, z is not M, z is not x, !(weak_js, two_level_jump(x,M))
     3M     Support, 13+: forcing, room for slam
            shows points>=13, M>=3
     4M     Game with support: a minimum
            shows tp(M)>=11, points<=12, M>=3
     3x     Six or more {x}: forcing
            shows x>=6, M<=2
            when  cheapest_rank(x)<19

   after 1y (P) 2x (P) 2N (P)
     when x is not y, !(weak_js, two_level_jump(x,y))
     3N     Game: 11+
            shows points>=11
     P      Minimum: no game

   after 1y (P) 2x (P) 3y (P)
     when x is not y, !(weak_js, two_level_jump(x,y))
     3N     Game, no fit
            shows points>=11, y<=1 | y is C | y is D
     P      Minimum: no game

   after 1M (P) 3M (P) 3N (P)
     4M     Prefers the major: four trumps
            shows M>=4

   after 1M (P) 2M (P) 3M (P)
     4M     Accepts: top of the raise
            shows tp(M)>=9
            when  style is not bba
     P      Declines
            shows tp(M)<=8
            when  style is not bba
     4M     Accepts: 10 HCP, or four trumps and a singleton
            shows hcp>=10 | (M>=4, shortest<=1)
            when  style is bba
     P      Declines
            when  style is bba

   after 1M (P) 2x (P) 3M (P)
     when x is not M, !(weak_js, two_level_jump(x,M))
     4M     Game
            shows points>=11

   after 1x (P) 1N (P) 2y (P)
     when y is not x, we.forcing=round
     3N     Game: a maximum for the 1NT response
            shows hcp>=9
     3{y}   Raise: four or more {y}
            shows y>=4
     3{x}   Preference to {x}
            shows x>=2

   after 1x (*) X (*) 1z (*) | 1x (*) X (*) 2z (*) | 1x (*) X (*) 3z (*)
     when they.bid
     P      Minimum: no further bid
            shows hcp+length_points<=10
     cheapest(z) Raise: an eight-card fit in {z}, 11-12
            shows z>=8-partner.z.min, hcp+length_points=11..12
            when  partner.z>=3
     4{z}   Game in {z}: 13+ with an eight-card fit
            shows z>=8-partner.z.min, hcp+length_points>=13
            when  partner.z>=3, z is H | z is S
     4{z}   Game in {z}: 8+, an eight-card fit
            shows z>=8-partner.z.min, hcp+length_points>=8
            when  partner.z>=3, z is H | z is S, partner.jumped
     cheapest(N) Invitational: 11-12 balanced, their suit stopped
            shows balanced, hcp+length_points=11..12, stop(they.strain)
            when  they.strain is not none, they.strain is not N
     cheapest(N) Invitational: 11-12 balanced
            shows balanced, hcp+length_points=11..12
            when  they.strain is none | they.strain is N
     3N     Game: 13+ balanced, their suit stopped
            shows balanced, hcp+length_points>=13, stop(they.strain)
            when  they.strain is not none, they.strain is not N
     3N     Game: 13+ balanced
            shows balanced, hcp+length_points>=13
            when  they.strain is none | they.strain is N
     3N     Game: 13+, no fit, their suit stopped
            shows hcp+length_points>=13, z<=7-partner.z.min, stop(they.strain)
            when  they.strain is not none, they.strain is not N
     P      No further bid

   after 1x (1y) X (P) 1z (P) | 1x (1y) X (P) 2z (P) | 1x (1y) X (P) 3z (P) | 1x (2y) X (P) 2z (P) | 1x (2y) X (P) 3z (P)
     when y is not x, y is not z
     3N     Game: 13+, a stopper in {y}
            shows hcp+length_points>=13, stop(y)
            when  partner.z<=3 | z is C | z is D
     cheapest(y) Cue bid: 13+, no stopper in {y}, forcing to game  [alert]  [artificial]
            shows hcp+length_points>=13

   after 1x (X) XX (1y) P (P) | 1x (X) XX (2y) P (P) | 1x (X) XX (3y) P (P)
     when y is not x
     X      Penalty: four good {y} behind the bidder
            shows y>=4
            when  quality(y)>=good | top5(y)>=3
     cheapest(x) Back to partner's suit: three or more, 10-11
            shows x>=3, hcp<=11
     3N     Game: 12+ with a stopper in {y}
            shows hcp>=12, stop(y)
     4{x}   Game: 12+ with three-card support
            shows x>=3, hcp>=12
            when  x is H | x is S
     cheapest(y) Cue bid: 12+, no stopper, forcing to game  [alert]  [artificial]
            shows hcp>=12
            when  !stop(y), cheapest_rank(y)<=18
     cheapest(S) Five or more spades
            shows S>=5
            when  x is not S, y is not S
     cheapest(H) Five or more hearts
            shows H>=5, S<=4
            when  x is not H, y is not H
     P      No further bid

   after 1x (1y) P (P) X (P) | 1x (2y) P (P) X (P) | 1x (3y) P (P) X (P)
     when y is not x
     P      Passes the reopening double: four or more {y}
            shows y>=4, y>=5 | quality(y)>=good | top5(y)>=3 | hcp>=8
     cheapest(S) Four or more spades for the reopening double
            shows S>=4, S>=H, S>=D, S>=C
            when  x is not S, y is not S
     cheapest(H) Four or more hearts for the reopening double
            shows H>=4, H>S, H>=D, H>=C
            when  x is not H, y is not H
     cheapest(D) Four or more diamonds for the reopening double
            shows D>=4, D>S, D>H, D>=C
            when  x is not D, y is not D
     cheapest(C) Four or more clubs for the reopening double
            shows C>=4, C>S, C>H, C>D
            when  x is not C, y is not C
     cheapest(x) Back to partner's suit
            shows x>=3
     cheapest(N) Balanced with a stopper in {y}
            shows balanced
            when  stop(y)
     P      Passes the double

   after 1x (*) P (*) P (P)
     when they.bid
     P      No further bid

   after 1x (*) 1y (*) 1z (*)
     when they.bid, y is not x, z is not x, z is not y
     cheapest(N) 6-10, no fit
            shows points<=10, z<=3
     cheapest(x) Preference: three or more {x}, weak
            shows x>=3, points<=10, z<=3
     cheapest(z) Raise: four or more {z}, weak
            shows z>=4, points<=10
     jump(z) Invitational raise: four or more {z}, 11-12
            shows z>=4, points=11..12
     cheapest(y) Weak: six or more {y}
            shows y>=6, points<=10
     jump(y) Invitational: six or more {y}, 11-12
            shows y>=6, points=11..12
     jump(N) Game: 13+
            shows points>=13, z<=3
            when  nt_jump_to_game
     4{z}   Game raise: four or more {z}, 13+
            shows z>=4, points>=13
            when  z is H | z is S
     P      No further bid

   after 1x (*) 1y (*) 2z (*)
     when they.bid, y is not x, z is not x, z is not y
     cheapest(x) Preference: two or more {x}
            shows x>=2, points<=12
     cheapest(z) Raise: four or more {z}
            shows z>=4, points>=10
     cheapest(y) Weak: six or more {y}
            shows y>=6, points<=10
     cheapest(N) No fit
            shows points<=12
     jump(N) Game: 13+
            shows points>=13, z<=3
            when  nt_jump_to_game
     P      Weak: to play
            shows points<=10
     P      No further bid

   after 1x (*) 1z (*) P (P) | 1x (*) 2z (*) P (P)
     when they.bid, z is not x
     cheapest(z) Competes: six or more {z}
            shows z>=6, points>=8
     cheapest(x) Competes: three or more {x}
            shows x>=3, points>=10
            when  partner.x>=5
     P      No further bid

   after 1x (*) X (*) 1N (*) | 1x (*) X (*) 2N (*)
     when they.bid
     P      Minimum: no game
            shows points<=10
            when  !partner.jumped
     P      Minimum: no game
            shows points<=5
            when  partner.jumped
     3N     Game
            shows points>=6
            when  partner.jumped
     cheapest(S) Weak: six or more spades
            shows S>=6, points<=10
     cheapest(H) Weak: six or more hearts
            shows H>=6, S<=5, points<=10
     cheapest(N) Invitational: 11-12
            shows points=11..12
            when  partner.last=1N
     3N     Game: 13+
            shows points>=13
            when  !partner.jumped
     P      No further bid

   after 1x (*) X (*) P (P)
     when they.bid
     cheapest(S) Competes: five or more spades, 11+
            shows S>=5, points>=11
     cheapest(H) Competes: five or more hearts, 11+
            shows H>=5, S<=4, points>=11
     cheapest(x) Preference to partner's suit with 11-12
            shows x>=3, points=11..12
     P      No further bid

   after 1x (1y) X (1y) P (P) | 1x (1y) X (2y) P (P) | 1x (1y) X (3y) P (P) | 1x (2y) X (3y) P (P)
     when y is not x
     3N     Game: 13+ with a stopper in {y}
            shows points>=13, stop(y)
     4{x}   Game in partner's major: 13+ with three
            shows x>=3, points>=13
            when  x is H | x is S
     5{x}   Game in partner's minor: 13+ with three
            shows x>=3, points>=13
            when  x is C | x is D

   after 1C (P) 1S (P) 1N (P) 3H (P) | 1D (P) 1S (P) 1N (P) 3H (P)
     4H     Four hearts
            shows H>=4
     4S     Three spades
            shows S=3, H<=3
     3N     Neither fit
            shows S<=2, H<=3

   after (any auction)
     when asked stoppers, trump is C | trump is D
     3N     Every suit stopped: 3NT
            when  trump is C | stop(C) | partner.cued(C) | me.cued(C) | partner.C.min>=4 | shown.C.min>=4, trump is D | stop(D) | partner.cued(D) | me.cued(D) | partner.D.min>=4 | shown.D.min>=4, trump is H | stop(H) | partner.cued(H) | me.cued(H) | partner.H.min>=4 | shown.H.min>=4, trump is S | stop(S) | partner.cued(S) | me.cued(S) | partner.S.min>=4 | shown.S.min>=4
     cheapest(C) Stopper in ♣, looking for 3NT
            when  trump is not C, cheapest_rank(C)<19, stop(C), !partner.cued(C), !me.cued(C), !partner.C.min>=4, !shown.C.min>=4
     cheapest(D) Stopper in ♦, looking for 3NT
            when  trump is not D, cheapest_rank(D)<19, stop(D), !partner.cued(D), !me.cued(D), !partner.D.min>=4, !shown.D.min>=4
     cheapest(H) Stopper in ♥, looking for 3NT
            when  trump is not H, cheapest_rank(H)<19, stop(H), !partner.cued(H), !me.cued(H), !partner.H.min>=4, !shown.H.min>=4
     cheapest(S) Stopper in ♠, looking for 3NT
            when  trump is not S, cheapest_rank(S)<19, stop(S), !partner.cued(S), !me.cued(S), !partner.S.min>=4, !shown.S.min>=4
     5{trump} A suit unstopped: game in the minor

   after 1m (P) 2m (P) 3m (P)
     when !inverted
     3N     Accepts: the top of the raise
            shows hcp>=9
     P      Declines: 6-8
            shows hcp<=8

   after 1x (1y) P (P) 1N (P) | 1x (2y) P (P) 2N (P)
     when y is not x
     3N     Game: 7+
            shows hcp>=7
     P      No game
            shows hcp<=6

   after 1x (1z) 1y (P) 2x (P)
     when z is not x, z is not y, y is not x
     3x     Invitational: 3+ {x}, 11-12
            shows x>=3, points=11..12
     4x     Game: 3+ {x}, 13+
            shows x>=3, points>=13
            when  x is H | x is S
     3y     Invitational: 6+ {y}, 11-12
            shows y>=6, points=11..12
     2N     Invitational: 11-12, {z} stopped
            shows points=11..12, stop(z), x<=2
     3N     Game: 13+, {z} stopped
            shows points>=13, stop(z), x<=2 | x is C | x is D
     cheapest(z) Cue bid: 13+, no stopper in {z}, forcing to game  [alert]  [artificial]
            shows points>=13
            when  cheapest_rank(z)<=18

   after 1x (1z) 1y (P) 2y (P)
     when z is not x, z is not y, y is not x
     3y     Invitational: 11-12 with the fit
            shows tp(y)=11..12
     4y     Game: 13+ with the fit
            shows tp(y)>=13
            when  y is H | y is S
     3N     Game: 13+, {z} stopped
            shows points>=13, stop(z)
            when  y is C | y is D

   after 1x (1z) 1y (P) 1N (P)
     when z is not x, z is not y, y is not x
     2N     Invitational: 11-12
            shows points=11..12, y<=5
     3N     Game: 13+
            shows points>=13, y<=5 | y is C | y is D
     3y     Invitational: 6+ {y}, 11-12
            shows y>=6, points=11..12
     4y     Game: 6+ {y}, 13+
            shows y>=6, points>=13
            when  y is H | y is S

   after 1x (1y) 2z (P) 2M (P) | 1x (1y) 2z (P) 3M (P) | 1x (2y) 2z (P) 2M (P) | 1x (2y) 2z (P) 3M (P) | 1x (2y) 3z (P) 3M (P)
     when y is not x, z is not x, z is not y, M is not x, M is not y, M is not z
     4M     Game: four {M}, 13+
            shows M>=4, points>=13
     cheapest(M) Raise: four {M}, 11-12
            shows M>=4, points=11..12
     3N     Game: 13+, {y} stopped
            shows points>=13, stop(y), M<=3
     cheapest(x) Preference: 11-12
            shows x>=3, points=11..12, M<=3
     cheapest(y) Cue bid: 13+, no stopper, forcing to game  [alert]  [artificial]
            shows points>=13
            when  cheapest_rank(y)<=18
     P      Minimum: no game
            shows points<=10
     cheapest(x) Preference: two or more {x}
            shows x>=2

   after 1x (1y) 2z (P) 2x (P) | 1x (1y) 2z (P) 3x (P) | 1x (2y) 2z (P) 3x (P) | 1x (2y) 3z (P) 3x (P)
     when y is not x, z is not x, z is not y
     4x     Game: 3+ {x}, 13+
            shows x>=3, points>=13
            when  x is H | x is S
     3N     Game: 13+, {y} stopped
            shows points>=13, stop(y)
     cheapest(x) Invitational raise: 3+ {x}, 11-12
            shows x>=3, points=11..12
     cheapest(y) Cue bid: 13+, no stopper, forcing to game  [alert]  [artificial]
            shows points>=13
            when  cheapest_rank(y)<=18

   after 1x (1y) 2z (P) 3z (P) | 1x (2y) 2z (P) 3z (P)
     when y is not x, z is not x, z is not y
     4z     Game in the fit: 13+
            shows points>=13
            when  z is H | z is S
     3N     Game: 13+, {y} stopped
            shows points>=13, stop(y)
            when  z is C | z is D
     cheapest(y) Cue bid: 13+, no stopper, forcing to game  [alert]  [artificial]
            shows points>=13
            when  z is C | z is D, cheapest_rank(y)<=18

   after 1x (2y) 3z (P) 4z (P)
     when y is not x, z is not x, z is not y, z is C | z is D
     5{z}   Game in the minor: 13+
            shows points>=13
     P      No game
            shows points<=12

   after 1x (X) XX (1y) 2x (P) | 1x (X) XX (2y) 2x (P) | 1x (X) XX (1y) 3x (P) | 1x (X) XX (2y) 3x (P)
     when y is not x
     4{x}   Game: 12+ with a doubleton or better
            shows x>=2, hcp>=12
            when  x is H | x is S
     3N     Game: 12+ with a stopper in {y}
            shows hcp>=12, stop(y)
            when  x is C | x is D | x<=1
     5{x}   Game in the minor: 13+
            shows x>=2, hcp>=13
            when  x is C | x is D
     3{x}   Invitational: 10-11 with a doubleton
            shows x>=2, hcp=10..11
            when  partner.last=2{x}
     P      Minimum for the redouble: no game

   after (any auction)
     when partner.last=1N | partner.last=2N, me.has_bid | style is not bba, partner.balanced, !they.bid | lho.last=P, we.trump is none, !asked
     3N     Game in notrump
            shows we.points.min>=25, we.fit(S).min<=7, we.fit(H).min<=7
     2N     Invitational
            shows we.points.max>=25, we.fit(S).min<=7, we.fit(H).min<=7
            when  partner.last=1N
     4S     Game in the spade fit
            shows we.points.min>=25, we.fit(S).min>=8
     4H     Game in the heart fit
            shows we.points.min>=25, we.fit(H).min>=8
     3S     Invitation in the spade fit
            shows we.points.max>=25, we.fit(S).min>=8
            when  partner.last=1N
     3H     Invitation in the heart fit
            shows we.points.max>=25, we.fit(H).min>=8
            when  partner.last=1N
     P      No game
            shows we.points.max<=26
     6N     Slam in notrump
            shows hcp+partner.hcp.min>=34, we.fit(S).min<=7, we.fit(H).min<=7
     4N     Quantitative: invites 6NT
            shows hcp+partner.hcp.min>=32, hcp+partner.hcp.max<=35, we.fit(S).min<=7, we.fit(H).min<=7
            when  quant_4nt

   after 1x (X) 1z (1y) X (P)
     when z is not x, y is not x, y is not z, !asked support
     cheapest(N) A stopper in {y}
            shows stop(y), z<=5
     cheapest(z) Five or more {z}
            shows z>=5
     cheapest(x) Three or more of partner's {x}
            shows x>=3
     cheapest(z) Rebids {z}

== responses: Responses to one-level suit openings
   file: conventions/base/responses.bid
   needs: base
   skills: partnership_bidding/basic_bidding, partnership_bidding/basic_major, bidding_conventions/walsh, bidding_conventions/forcing_1nt, bidding_conventions/semi_forcing_1nt
   define inv_jump_raise = limit_raise, !bergen, !rbergen
   define soloway_js(y, x) = controls>=4, y>=5, hcp>=16 | system is not brill, (y>=6, top5(y)>=4, points>=17, second_longest<=3, x<=3) | (y>=6, quality(y)>=excellent, has(J,y), points>=17, x<=3) | (top5(y)>=3, hcp>=18, x<=3, balanced | (y=6, second_longest=3, shortest=2)) | (top5(y)>=3, x>=4, tp(x)>=17)

   after 1C (P)
     when over_1c is up_the_line, !twalsh
     1D     4+ diamonds, 6+ HCP
            shows D>=4, hcp>=6, D>=H, D>H | D=4, D>=S, D>S | D=4
     1H     4+ hearts, 6+ HCP
            shows H>=4, hcp>=6, H>=D, H>D | H>=5, H>=S, H>S | H=4
     1S     4+ spades, 6+ HCP
            shows S>=4, hcp>=6, S>=D, S>D | S>=5, S>H | S>=5, S>=H

   after 1C (P)
     when over_1c is walsh, !twalsh
     1D     Walsh: 4+ diamonds, no 4-card major unless 12+ HCP
            shows D>=4, hcp>=6, (H<=3, S<=3) | hcp>=12, D>=H, D>=S
     1H     4+ hearts, 6+ HCP
            shows H>=4, hcp>=6, H>=S, H>S | H=4, hcp<=11 | H>D
     1S     4+ spades, 6+ HCP
            shows S>=4, hcp>=6, S>H | S>=5, S>=H, hcp<=11 | S>D

   after 1C (P)
     1N     6-10 HCP, balanced, no 4-card major or diamonds
            shows hcp=6..10, H<=3, S<=3, D<=3
            when  !inverted | C<=4
     2D     Strong jump shift: 15+, 5+ diamonds
            shows D>=5, hcp>=15
            when  strong_js, !weak_js, !soloway, !passed_hand

   after 1D (P)
     1H     4+ hearts, 6+ HCP
            shows H>=4, hcp>=6, H>=S, H>S | H=4
            when  hcp<=10 | H>=C | (gf21, hcp<=11 | points<=12)
     1S     4+ spades, 6+ HCP
            shows S>=4, hcp>=6, S>H | S>=5, S>=H
            when  hcp<=10 | S>=C | (gf21, hcp<=11 | points<=12)
     1N     6-10 HCP, no 4-card major
            shows hcp=6..10, H<=3, S<=3
            when  !inverted | D<=4
     2C     11+ points, 4+ clubs
            shows C>=4, points>=11 | C>=6, suit_points>=10, H<=3 | C>H, S<=3 | C>S
            when  !gf21
     2C     Two over one, game forcing: 4+ clubs
            shows C>=4, (style is not bba, hcp>=12, points>=13) | (style is bba, hcp>=13), H<=3 | C>H, S<=3 | C>S
            when  gf21, !passed_hand
     3C     Invitational jump shift: 10-12 points, 6+ clubs
            shows C>=6, points=10..12, H<=3, S<=3
            when  inv_js, !weak_js3

   after 1m (P)
     2m     Raise: 6-9, 5+ {m}, no 4-card major
            shows m>=5, hcp>=6, points<=9, H<=3, S<=3
            when  !inverted
     3m     Limit raise: 10-12 HCP, 5+ {m}, no 4-card major
            shows m>=5, hcp=10..12, H<=3, S<=3
            when  !inverted
     3N     Game values, no 4-card major
            shows hcp>=13, H<=3, S<=3
            when  !inverted
     2N     Invitational: 11-12, balanced, no 4-card major
            shows balanced, points=11..12, H<=3, S<=3
            when  nt2 is invitational
     3N     13-15, balanced, no 4-card major
            shows balanced, points=13..15, H<=3, S<=3
            when  nt2 is invitational
     2N     13-15, balanced, no 4-card major: game forcing
            shows balanced, points=13..15, H<=3, S<=3
            when  nt2 is game_forcing
     3N     16-17, balanced, no 4-card major
            shows balanced, points=16..17, H<=3, S<=3
            when  nt2 is game_forcing
     2H     Strong jump shift: 15+, 5+ hearts
            shows H>=5, hcp>=15
            when  strong_js, !weak_js, !soloway, !passed_hand
     2S     Strong jump shift: 15+, 5+ spades
            shows S>=5, hcp>=15
            when  strong_js, !weak_js, !soloway, !passed_hand

   after 1D (P)
     when gf21, nt2 is invitational
     2N     Invitational: 11-12, 4+ clubs, no 4-card major
            shows points=11..12, C>=4, H<=3, S<=3, D<=3

   after 1D (P)
     when !inverted
     3D     Limit raise: 10-12 HCP, four diamonds, no 4-card major
            shows D=4, hcp=10..12, H<=3, S<=3, !balanced

   after 1D (P)
     when gf21
     3C     Invitational jump shift: 10-12 points, 6+ clubs
            shows C>=6, hcp>=10, hcp<=11 | points<=12, H<=3, S<=3
            when  !weak_js3

   after 1D (P)
     when nt2 is game_forcing
     2C     11-12, balanced, no 4-card major
            shows balanced, points=11..12, C>=3, H<=3, S<=3

   after 1C (P)
     when nt2 is game_forcing, !twalsh
     1D     11-12, balanced, no 4-card major
            shows balanced, points=11..12, D>=3, H<=3, S<=3

   after 1H (P)
     1S     4+ spades, 6+ HCP
            shows S>=4, hcp>=6
            when  H<=2 | (style is not bba, (H=3, tp(H)>=11) | tp(H)>=13 | !inv_jump_raise) | (style is bba, H=3, hcp>=11 | S>=6 | (hcp>=10, S>=5 | shortest<=2)), hcp<=10 | (S>=C, S>=D) | (hcp<=12, C<=5, D<=5) | (gf21, hcp<=11 | points<=12)
     1N     6-10 HCP, no heart fit, no 4 spades
            shows hcp=6..10, H<=2, S<=3
            when  !gf21
     1N     Forcing 1NT: 6-12 HCP, no heart fit, no 4 spades
            shows hcp=6..12, H<=2, S<=3
            when  gf21, f1n
     1N     6-12 HCP, no heart fit, no 4 spades
            shows hcp=6..12, H<=2 | (system is brill, H=3, tp(H)>=10), S<=3
            when  gf21, !f1n, !semi
     1N     Semi-forcing 1NT: 6-12 HCP, no heart fit, no 4 spades
            shows hcp=6..12, H<=2, S<=3
            when  gf21, !f1n, semi
     2S     Strong jump shift: 15+, 5+ spades
            shows S>=5, hcp>=15
            when  strong_js, !weak_js, !soloway, !passed_hand
     2C     11+ points, 4+ clubs
            shows C>=4, points>=11 | C>=6 | (H>=3, tp(H)>=11), suit_points>=10, C>=D, S<=3 | (C>S, hcp>=13 | C>=6)
            when  !gf21, !passed_hand | (!drury, !drury_rev), H<=2 | (style is not bba, H=3 | tp(H)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, H>=4))
     2C     Two over one, game forcing: 4+ clubs
            shows C>=4, (style is not bba, hcp>=12, points>=13) | (style is bba, hcp>=13), C>=D, S<=3 | (C>S, hcp>=13 | C>=6)
            when  gf21, !passed_hand, !passed_hand | (!drury, !drury_rev), H<=2 | (style is not bba, H=3 | tp(H)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, H>=4))
     2D     11+ points, 4+ diamonds
            shows D>=4, points>=11 | D>=6 | (H>=3, tp(H)>=11), suit_points>=10, D>C, S<=3 | (D>S, hcp>=13 | D>=6)
            when  !gf21, H<=2 | (style is not bba, H=3 | tp(H)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, H>=4))
     2D     Two over one, game forcing: 4+ diamonds
            shows D>=4, (style is not bba, hcp>=12, points>=13) | (style is bba, hcp>=13), D>C, S<=3 | (D>S, hcp>=13 | D>=6)
            when  gf21, !passed_hand, H<=2 | (style is not bba, H=3 | tp(H)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, H>=4))
     3H     Limit raise: 11-12 support points, 3+ hearts
            shows H>=3, tp(H)=11..12 | (H>=4, tp(H)=10, shortest<=2), hcp<=12
            when  !passed_hand | (!drury, !drury_rev), inv_jump_raise, H>=4 | S<=3, style is not bba, system is not brill
     3H     Limit raise: 10-12 support points, 4+ hearts
            shows H>=4, tp(H)=10..12, hcp<=12
            when  !passed_hand | (!drury, !drury_rev), inv_jump_raise, system is brill
     3C     Invitational jump shift: 10-12 points, 6+ clubs
            shows C>=6, points=10..12, H<=2
            when  inv_js, !weak_js3
     3D     Invitational jump shift: 10-12 points, 6+ diamonds
            shows D>=6, points=10..12, H<=2
            when  inv_js, !weak_js3

   after 1S (P)
     1N     6-10 HCP, no spade fit
            shows hcp=6..10, S<=2
            when  !gf21
     1N     Forcing 1NT: 6-12 HCP, no spade fit
            shows hcp=6..12, S<=2
            when  gf21, f1n
     1N     6-12 HCP, no spade fit
            shows hcp=6..12, S<=2 | (system is brill, S=3, tp(S)>=10)
            when  gf21, !f1n, !semi
     1N     Semi-forcing 1NT: 6-12 HCP, no spade fit
            shows hcp=6..12, S<=2
            when  gf21, !f1n, semi
     2C     11+ points, 4+ clubs
            shows C>=4, points>=11 | C>=6 | (S>=3, tp(S)>=11), suit_points>=10, C>=D, C>=H
            when  !gf21, !passed_hand | (!drury, !drury_rev), S<=2 | (style is not bba, S=3 | tp(S)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, S>=4))
     2C     Two over one, game forcing: 4+ clubs
            shows C>=4, (style is not bba, hcp>=12, points>=13) | (style is bba, hcp>=13), C>=D, C>=H
            when  gf21, !passed_hand, !passed_hand | (!drury, !drury_rev), S<=2 | (style is not bba, S=3 | tp(S)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, S>=4))
     2D     11+ points, 4+ diamonds
            shows D>=4, points>=11 | D>=6 | (S>=3, tp(S)>=11), suit_points>=10, D>C, D>=H
            when  !gf21, S<=2 | (style is not bba, S=3 | tp(S)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, S>=4))
     2D     Two over one, game forcing: 4+ diamonds
            shows D>=4, (style is not bba, hcp>=12, points>=13) | (style is bba, hcp>=13), D>C, D>=H
            when  gf21, !passed_hand, S<=2 | (style is not bba, S=3 | tp(S)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, S>=4))
     2H     11+ points, 5+ hearts
            shows H>=5, points>=11 | H>=6 | (S>=3, tp(S)>=11), suit_points>=10
            when  !gf21, S<=2 | (style is not bba, S=3 | tp(S)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, S>=4))
     2H     Two over one, game forcing: 5+ hearts
            shows H>=5, (style is not bba, hcp>=12, points>=13) | (style is bba, hcp>=13)
            when  gf21, !passed_hand, S<=2 | (style is not bba, S=3 | tp(S)>=13) | (style is bba, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, S>=4))
     3S     Limit raise: 11-12 support points, 3+ spades
            shows S>=3, tp(S)=11..12 | (S>=4, tp(S)=10, shortest<=2), hcp<=12
            when  !passed_hand | (!drury, !drury_rev), inv_jump_raise, style is not bba, system is not brill
     3S     Limit raise: 10-12 support points, 4+ spades
            shows S>=4, tp(S)=10..12, hcp<=12
            when  !passed_hand | (!drury, !drury_rev), inv_jump_raise, system is brill
     2H     11+ points, 5+ hearts
            shows H>=5, hcp>=10, S<=2 | hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, S>=4)
            when  style is bba, !gf21
     3C     Invitational jump shift: 10-12 points, 6+ clubs
            shows C>=6, points=10..12, S<=2
            when  inv_js, !weak_js3
     3D     Invitational jump shift: 10-12 points, 6+ diamonds
            shows D>=6, points=10..12, S<=2
            when  inv_js, !weak_js3
     3H     Invitational jump shift: 10-12 points, 6+ hearts
            shows H>=6, points=10..12, S<=2
            when  inv_js, !weak_js3

   after 1M (P)
     2M     Raise: 3+ {M}
            shows M>=3, hcp>=6, (tp(M)=6..10, M=3 | tp(M)<=9 | shortest>=3) | (!inv_jump_raise, tp(M)<=12)
            when  style is not bba
     4M     Preemptive raise: 5+ {M}, weak
            shows M>=5, hcp=5..9
            when  style is not bba
     2C     Game values with a fit: a three-card minor to start
            shows M>=3, tp(M)>=13, C>=3
            when  !passed_hand | (!drury, !drury_rev), style is not bba
     2D     Game values with a fit: a three-card minor to start
            shows M>=3, tp(M)>=13, D>=3, C<=2
            when  style is not bba
     2M     Raise: 3+ {M}
            shows M>=3, hcp>=5, (tp(M)<=11, (M=3, hcp>=6, hcp<=10, hcp<=8 | shortest>=3) | (M>=4, hcp<=8, tp(M)+M<=14)) | (!inv_jump_raise, hcp=6..12)
            when  style is bba
     3M     Limit raise: 3+ {M}, invitational
            shows M>=3, (M=3, hcp=11..12, shortest>=3) | (M=3, hcp=9..11, shortest<=2, tp(M)<=13) | (M>=4, hcp=9..10, shortest>=2, shortest>=3 | controls<=3, shortest>=3 | longest<=4), M is S | S<=3 | hcp<=9
            when  !passed_hand | (!drury, !drury_rev), inv_jump_raise, style is bba
     4M     Raise to game: 4+ {M} and shortness
            shows M>=4, (shortest<=1, hcp<=10, tp(M)+M>=15) | (shortest=2, hcp=9..10, controls>=4 | longest>=5)
            when  style is bba
     2C     Game values with a fit: a three-card minor to start
            shows M>=3, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, M>=4), C>=3
            when  !passed_hand | (!drury, !drury_rev), style is bba
     2D     Game values with a fit: a three-card minor to start
            shows M>=3, hcp>=13 | (hcp>=12, shortest<=2) | (hcp>=11, M>=4), D>=3, C<=2
            when  style is bba
     4M     Game in the fit: 13+ support points
            shows M>=3, tp(M)>=13
     2N     11-12, balanced, no fit
            shows balanced, points=11..12, M<=2
     3N     13-15, balanced
            shows balanced, points=13..15, M<=3

   after 1C (P)
     when weak_js
     2D     Weak jump shift: 6+ diamonds, 2-5 HCP  [alert]
            shows D>=6, hcp=2..5
     2H     Weak jump shift: 6+ hearts, 2-5 HCP  [alert]
            shows H>=6, hcp=2..5
     2S     Weak jump shift: 6+ spades, 2-5 HCP  [alert]
            shows S>=6, hcp=2..5

   after 1D (P)
     when weak_js
     2H     Weak jump shift: 6+ hearts, 2-5 HCP  [alert]
            shows H>=6, hcp=2..5
     2S     Weak jump shift: 6+ spades, 2-5 HCP  [alert]
            shows S>=6, hcp=2..5

   after 1H (P)
     when weak_js
     2S     Weak jump shift: 6+ spades, 2-5 HCP  [alert]
            shows S>=6, hcp=2..5, H<=2

   after 1D (P)
     when weak_js3
     3C     Weak jump shift: 7+ clubs, 2-6 HCP  [alert]
            shows C>=7, hcp=2..6

   after 1H (P)
     when weak_js3
     3C     Weak jump shift: 7+ clubs, 2-6 HCP  [alert]
            shows C>=7, hcp=2..6, H<=2
     3D     Weak jump shift: 7+ diamonds, 2-6 HCP  [alert]
            shows D>=7, hcp=2..6, H<=2

   after 1S (P)
     when weak_js3
     3C     Weak jump shift: 7+ clubs, 2-6 HCP  [alert]
            shows C>=7, hcp=2..6, S<=2
     3D     Weak jump shift: 7+ diamonds, 2-6 HCP  [alert]
            shows D>=7, hcp=2..6, S<=2
     3H     Weak jump shift: 7+ hearts, 2-6 HCP  [alert]
            shows H>=7, hcp=2..6, S<=2

   after 1C (P)
     when soloway, !weak_js, !passed_hand
     2D     Soloway jump shift: strong suit, 18+ balanced, or a fit  [alert]
            shows soloway_js(D,C)
     2H     Soloway jump shift: strong suit, 18+ balanced, or a fit  [alert]
            shows soloway_js(H,C)
     2S     Soloway jump shift: strong suit, 18+ balanced, or a fit  [alert]
            shows soloway_js(S,C)

   after 1D (P)
     when soloway, !weak_js, !passed_hand
     2H     Soloway jump shift: strong suit, 18+ balanced, or a fit  [alert]
            shows soloway_js(H,D)
     2S     Soloway jump shift: strong suit, 18+ balanced, or a fit  [alert]
            shows soloway_js(S,D)

   after 1H (P)
     when soloway, !weak_js, !passed_hand
     2S     Soloway jump shift: strong suit, 18+ balanced, or a fit  [alert]
            shows soloway_js(S,H)

   after 1x (P)
     P      Fewer than 6 HCP
            shows hcp<=5

== roudi: Roudi
   file: conventions/base/roudi.bid
   card: other_conventions.roudi.play
   needs: responder-rebids
   skills: bidding_conventions/roudi

   after 1m (P) 1M (P) 1N (P)
     when !tw(m)
     2C     Roudi: invitational or better, asks for support and strength  [alert]  [artificial]
            shows M>=5 | (H>=4, S>=4), points>=11

   after 1m (P) 1M (P) 1N (P) 2C (P)
     when !tw(m)
     2D     Minimum, at most two {M}  [alert]  [artificial]
            shows hcp<=13, M<=2
     2H     Minimum with three {M}  [alert]  [artificial]
            shows hcp<=13, M=3
     2S     Maximum with three {M}  [alert]  [artificial]
            shows hcp>=14, M=3
     2N     Maximum, at most two {M}  [alert]
            shows hcp>=14, M<=2
     3m     Maximum with three {M} and five {m}  [alert]
            shows hcp>=14, M=3, m>=5

   after 1m (P) 1M (P) 1N (P) 2C (P) 2D (P)
     when !tw(m)
     2N     Invitational, no fit
            shows points=11..12, M<=5
     3M     Invitational: six {M}
            shows M>=6, points=11..12
     3N     Game
            shows points>=13, M<=5
     4M     Game: six {M}
            shows M>=6, points>=13

   after 1m (P) 1M (P) 1N (P) 2C (P) 2H (P)
     when !tw(m)
     3M     Invitational, in the fit
            shows M>=5, points=11..12
     4M     Game in the fit
            shows M>=5, points>=13
     2N     Invitational, four {M}
            shows M=4, points=11..12
     3N     Game, four {M}
            shows M=4, points>=13

   after 1m (P) 1M (P) 1N (P) 2C (P) 2S (P) | 1m (P) 1M (P) 1N (P) 2C (P) 3m (P)
     when !tw(m)
     4M     Game in the fit
            shows M>=5
     3N     Game, four {M}
            shows M=4

   after 1m (P) 1M (P) 1N (P) 2C (P) 2N (P)
     when !tw(m)
     4M     Game: six {M}
            shows M>=6
     3N     Game
            shows M<=5

== soloway: Soloway jump shifts
   file: conventions/base/soloway.bid
   needs: responses
   skills: bidding_conventions/soloway

   after 1x (P) 2y (P)
     when soloway, !weak2, y is not x, two_level_jump(y,x)
     3y     Support for {y}: three with an honour, or four
            shows y>=4 | (y=3, quality(y)>=fair)
     3x     Rebids {x}: five or more, no support
            shows x>=5, y<=3, quality(y)<=poor | y<=2
     cheapest(z) No support, a side suit with two of the top three honours
            shows z>=4, quality(z)>=good, y<=3, quality(y)<=poor | y<=2
            when  z is not x, z is not y
     2N     No support, no strong side suit
            shows y<=3, quality(y)<=poor | y<=2

   after 1x (P) 2y (P) 2N (P) | 1x (P) 2y (P) 3x (P)
     when soloway, !weak2, y is not x, two_level_jump(y,x)
     cheapest(x) Type 4: support for {x}
            shows x>=4
     cheapest(y) Type 1 or 2: a long, strong {y}
            shows y>=6, top5(y)>=4
     3N     Type 3: balanced, 18+
            shows balanced
     cheapest(y) Rebids {y}
            shows y>=6

   after 1x (P) 2y (P) 2z (P) | 1x (P) 2y (P) 3z (P)
     when soloway, !weak2, y is not x, z is not x, z is not y, two_level_jump(y,x)
     cheapest(x) Type 4: support for {x}
            shows x>=4
     cheapest(y) Type 1 or 2: a long, strong {y}
            shows y>=6, top5(y)>=4
     3N     Type 3: balanced, 18+
            shows balanced
     cheapest(y) Rebids {y}
            shows y>=6

== strong-openings: 2♣ and 2NT openings
   file: conventions/base/strong-openings.bid
   needs: base
   skills: bidding_conventions/strong_2c, partnership_bidding/two_club

   after (any auction)
     when opening
     2N     {two_nt_min}-{two_nt_max} HCP, balanced
            shows hcp=two_nt_min..two_nt_max, balanced
     3N     {three_nt_min}-{three_nt_max} HCP, balanced
            shows hcp=three_nt_min..three_nt_max, balanced, S<=4 | system is not brill, H<=4 | system is not brill
            when  !gambling, !french
     2C     Strong 2♣: 22+ HCP  [alert]  [artificial]
            shows hcp>=22, !balanced | (system is not brill, hcp<=25) | (system is brill, hcp<=24 | S>=5 | H>=5) | hcp>=28 | gambling, !french | hcp<=23
            when  two_c is strong | two_c is very_strong, forcing_2c | forcing_1c, !benjamin
     2C     Strong 2♣: nine tricks with a major  [alert]  [artificial]
            shows hcp>=17, losers<=4, hcp+length_points>=23, (H>=6, quality(H)>=good) | (S>=6, quality(S)>=good) | (H>=5, S>=5), !french | hcp<=23
            when  two_c is strong | two_c is very_strong, forcing_2c | forcing_1c, !benjamin
     2C     Strong 2♣: ten tricks with a long suit  [alert]  [artificial]
            shows hcp>=17, losers<=3, hcp+length_points>=23, (C>=6, quality(C)>=good) | (D>=6, quality(D)>=good) | (H>=6, quality(H)>=good) | (S>=6, quality(S)>=good) | shape 5-5-x-x, !french | hcp<=23
            when  two_c is strong | two_c is very_strong, forcing_2c | forcing_1c, !benjamin

   after 2C (P)
     2D     Waiting  [artificial]
            when  two_d_resp is waiting | two_d_resp is negative
     2H     Positive: five or more hearts, 8+
            shows H>=5, hcp>=8
            when  !bust_2h, (H>=6, top5(H)>=3) | quality(H)>=good
     2S     Positive: five or more spades, 8+
            shows S>=5, hcp>=8
            when  (S>=6, top5(S)>=3) | quality(S)>=good
     3C     Positive: five or more clubs, 8+
            shows C>=5, hcp>=8
            when  (C>=6, top5(C)>=3) | quality(C)>=good
     3D     Positive: five or more diamonds, 8+
            shows D>=5, hcp>=8
            when  (D>=6, top5(D)>=3) | quality(D)>=good
     2N     Positive: balanced, 8+
            shows balanced, hcp>=8
     2H     Bust: fewer than 3 HCP  [artificial]
            shows hcp<=2
            when  bust_2h

   after 2C (P) 2D (P)
     2N     22-23 HCP, balanced
            shows hcp=22..23, balanced
     3N     24-25 HCP, balanced
            shows balanced, hcp>=24, hcp<=25 | (gambling, hcp<=27)
     4N     28+ HCP, balanced
            shows hcp>=28, balanced
     2H     5+ hearts
            shows H>=5
     2S     5+ spades
            shows S>=5
     3C     5+ clubs
            shows C>=5
     3D     5+ diamonds
            shows D>=5

   after 2C (2x) P (P) | 2C (3x) P (P)
     2N     22-23 HCP, balanced, a stopper in {x}
            shows hcp=22..23, balanced, stop(x)
     3N     24-25 HCP, balanced, a stopper in {x}
            shows hcp=24..25, balanced, stop(x)

   after 2C (P) 2N (P) 3S (P) | 2C (P) 3C (P) 3S (P) | 2C (P) 3D (P) 3S (P)
     4S     Support: three or more spades
            shows S>=3

   after 2C (P) 2N (P) 3H (P) | 2C (P) 3C (P) 3H (P) | 2C (P) 3D (P) 3H (P)
     4H     Support: three or more hearts
            shows H>=3

   after 2C (P) 2y (P) | 2C (P) 3y (P)
     when y is not D | partner.D>=5, y is not H | !bust_2h
     cheapest(y) Raise: three or more {y}, 22+
            shows y>=3, hcp>=22
     cheapest(S) Five or more spades
            shows S>=5
            when  y is not S
     cheapest(H) Five or more hearts
            shows H>=5
            when  y is not H
     cheapest(D) Five or more diamonds
            shows D>=5
            when  y is not D
     cheapest(C) Five or more clubs
            shows C>=5
            when  y is not C
     cheapest(N) Balanced, no fit for {y}
            shows balanced, hcp>=22

   after 2C (P) 2y (P) 2N (P)
     when y is H | y is S, y is not H | !bust_2h, style is bba
     3y     Six or more {y}
            shows y>=6
     3S     Four or more spades
            shows S>=4
            when  y is H
     3H     Four or more hearts
            shows H>=4
            when  y is S
     3C     Four or more clubs
            shows C>=4
     3D     Four or more diamonds
            shows D>=4
     4N     Quantitative: invites 6NT
            shows balanced, hcp+partner.hcp.min>=30, hcp+partner.hcp.min<=32
            when  quant_4nt
     6N     Slam in notrump
            shows balanced, hcp+partner.hcp.min>=33
     3N     To play

   after 2C (P) 2y (P) 2N (P) 3z (P)
     when y is H | y is S, z is H | z is S, z is not y, y is not H | !bust_2h, style is bba
     4N     Keycard ask in {z}: four-card support  [artificial]
            shows z>=4
            when  k1430 | k0314
     4z     Four-card support: game in {z}
            shows z>=4
            when  !k1430, !k0314

   after 2C (P) 2N (P)
     3S     Five or more spades
            shows S>=5
     3H     Five or more hearts
            shows H>=5
     3D     Five or more diamonds
            shows D>=5
     3C     Five or more clubs
            shows C>=5
     3N     Balanced 22, no suit to show
            shows balanced, hcp>=22
     4N     Quantitative: 23-24 balanced, invites 6NT
            shows balanced, hcp=23..24
            when  quant_4nt
     6N     Slam in notrump
            shows hcp>=25, balanced

   after 2C (P) 2D (P) 2H (P)
     3C     Second negative: fewer than 3 HCP  [artificial]
            shows hcp<=2
            when  !bust_2h

   after 2C (P) 2D (P) 2S (P)
     3C     Second negative: fewer than 3 HCP  [artificial]
            shows hcp<=2
            when  !bust_2h

   after 2C (P) 2D (P) 3C (P)
     3D     Second negative: fewer than 3 HCP  [artificial]
            shows hcp<=2
            when  !bust_2h

   after 2C (P) 2H (P)
     when bust_2h
     2N     22-23 HCP, balanced
            shows hcp=22..23, balanced
     3N     24-25 HCP, balanced
            shows balanced, hcp>=24, hcp<=25 | (gambling, hcp<=27)
     4N     28+ HCP, balanced
            shows hcp>=28, balanced
     2S     5+ spades: forcing one round
            shows S>=5
     3H     5+ hearts
            shows H>=5
     3C     5+ clubs
            shows C>=5
     3D     5+ diamonds
            shows D>=5

   after 2C (P) 2H (P) 2S (P)
     when bust_2h
     3S     Three or more spades
            shows S>=3
     2N     No spade support

   after 2C (P) 2H (P) 3H (P)
     when bust_2h
     4H     Raise to game: three or more hearts
            shows H>=3
     P      No support

   after 2C (P) 2H (P) 3C (P) | 2C (P) 2H (P) 3D (P) | 2C (P) 2H (P) 2N (P)
     when bust_2h
     P      No further bid

   after 2C (P) 2H (P) 2S (P) 2N (P)
     when bust_2h
     4S     Game in hand: six or more spades
            shows S>=6, losers<=3
     3S     Six or more spades: to play
            shows S>=6
     3H     Five or more hearts too
            shows H>=5
     3D     Four or more diamonds too
            shows D>=4
     3C     Four or more clubs too
            shows C>=4
     P      No further bid

== transfer-walsh: Transfer Walsh responses to 1♣
   file: conventions/base/transfer-walsh.bid
   card: minor_openings.one_club.transfer_resp
   needs: responder-rebids
   skills: bidding_conventions/transfer_walsh

   after 1C (P)
     1D     Transfer: 4+ hearts, 6+ HCP  [alert]  [artificial]
            shows H>=4, hcp>=6, H>=S, H>S | H=4, hcp<=11 | H>=D
     1H     Transfer: 4+ spades, 6+ HCP  [alert]  [artificial]
            shows S>=4, hcp>=6, S>H | S>=5, S>=H, hcp<=11 | S>=D
     1S     Transfer Walsh: 4+ diamonds, no major unless 12+ HCP  [alert]  [artificial]
            shows D>=4, hcp>=6, (H<=3, S<=3) | (hcp>=12, D>H, D>S)

   after (any auction)
     when asked tw_accept(M)
     1{M}   Accepts: three {M}, or four and a minimum
            shows M>=3, M=3 | tp(M)<=15
     2{M}   Raise: four {M}, 16-18
            shows M>=4, tp(M)=16..18
     4{M}   Game raise: four {M}, 19+
            shows M>=4, tp(M)>=19
     1S     4+ spades, not three hearts
            shows S>=4, H<=2, suit_points<=18
            when  M is H
     2H     Reverse: 4+ hearts, longer clubs, 17+, not three spades
            shows H>=4, C>H, S<=2, suit_points>=17
            when  M is S
     1N     12-14 HCP, balanced, not three {M}
            shows balanced | shape 5-4-2-2, hcp=12..14, M<=2
     2N     18-19 HCP, balanced, not three {M}
            shows balanced, hcp=18..19, M<=2
     2C     6+ clubs, minimum, not three {M}
            shows C>=6, suit_points<=15, M<=2
     3C     6+ clubs, 16-18, not three {M}
            shows C>=6, suit_points=16..18, M<=2
     2D     Reverse: 4+ diamonds, longer clubs, 17+, not three {M}
            shows D>=4, C>D, suit_points>=17, M<=2
     3N     18-21 with six or more clubs, not three {M}
            shows C>=6, hcp=18..21, M<=2
     1N     Minimum, not three {M}
            shows hcp<=14, M<=2
     2C     5+ clubs, not three {M}
            shows C>=5, M<=2

   after (any auction)
     when asked tw_nomajor
     1N     12-14 HCP, balanced
            shows balanced | shape 5-4-2-2, hcp=12..14
     2N     18-19 HCP, balanced
            shows balanced, hcp=18..19
     2D     Raise: 4+ diamonds, minimum
            shows D>=4, tp(D)<=15
     3D     Jump raise: 4+ diamonds, 16+
            shows D>=4, tp(D)>=16
     2C     6+ clubs, minimum
            shows C>=6, suit_points<=15
     3C     6+ clubs, 16-18
            shows C>=6, suit_points=16..18
     3N     18-21 with six or more clubs
            shows C>=6, hcp=18..21
     1N     Minimum
            shows hcp<=14
     2C     5+ clubs
            shows C>=5

   after 1C (P) 1D (P) 1H (P) | 1C (P) 1H (P) 1S (P)
     P      Weak: to play
            shows points<=10
     3N     Game: 13+, four of the major
            shows points>=13
     2N     Invitational: 11-12
            shows points=11..12

   after 1C (P) 1D (P) 1H (P)
     2H     Five or more hearts, 8-10: competitive
            shows H>=5, points=8..10
     3H     Invitational: five or more hearts, 11-12
            shows H>=5, tp(H)=11..12
     4H     Game: five or more hearts, 13+
            shows H>=5, tp(H)>=13
     1S     Four spades as well, 6+
            shows S>=4, H=4

   after 1C (P) 1H (P) 1S (P)
     2S     Five or more spades, 8-10: competitive
            shows S>=5, points=8..10
     3S     Invitational: five or more spades, 11-12
            shows S>=5, tp(S)=11..12
     4S     Game: five or more spades, 13+
            shows S>=5, tp(S)>=13
     2H     Four or more hearts as well, 8-10
            shows H>=4, S>=5, points=8..10

   after 1C (P) 1D (P) 2H (P) | 1C (P) 1H (P) 2S (P)
     P      Weak: no game
            shows points<=7
     4{trump} Game
            shows points>=8

   after 1C (P) 1x (P) 1N (P)
     P      Weak: no game
            shows points<=10
     2N     Invitational: 11-12
            shows points=11..12
     3N     Game: 13+
            shows points>=13
     4N     Quantitative: invites 6NT
            shows balanced, points+partner.points.min>=31, points+partner.points.min<=32
            when  q4n
     6N     Slam in notrump
            shows balanced, points+partner.points.min>=33

   after 1C (P) 1S (P) 1N (P) | 1C (P) 1S (P) 2C (P)
     2H     Game force: four hearts, longer diamonds
            shows H>=4, D>=5, D>S, points>=13
     2S     Game force: four spades, longer diamonds
            shows S>=4, D>=5, H<=3, points>=13

   after 1C (P) 1D (P) 1N (P)
     2S     Responder's reverse: 4+ spades, 5+ hearts, game forcing
            shows S>=4, H>=5, points>=13

   after 1C (P) 1H (P) 1N (P)
     3H     Four hearts, five spades, game forcing
            shows H>=4, S>=5, points>=13

   after 1C (P) 1S (P) 1N (P) 2M (P) | 1C (P) 1S (P) 2C (P) 2M (P)
     3{M}   Four {M}: the fit
            shows M>=4
     2S     Four spades, not four hearts
            shows S>=4, H<=3
            when  M is H
     3N     No fit in {M}

   after 1C (P) 1S (P) 1N (P) 2H (P) 2S (P) | 1C (P) 1S (P) 2C (P) 2H (P) 2S (P)
     4S     Four spades as well: game
            shows S>=4
     3N     Game in notrump

   after 1C (P) 1D (P) 1N (P)
     2H     Weak: six or more hearts
            shows H>=6, points<=10
     3H     Invitational: six or more hearts
            shows H>=6, points=11..12
     4H     Game: six or more hearts
            shows H>=6, points>=13

   after 1C (P) 1H (P) 1N (P)
     2S     Weak: six or more spades
            shows S>=6, points<=10
     3S     Invitational: six or more spades
            shows S>=6, points=11..12
     4S     Game: six or more spades
            shows S>=6, points>=13

   after 1C (P) 1D (P) 1S (P)
     P      Weak: four spades too
            shows S>=4, points<=10
     2S     Raise: four spades, weak
            shows S>=4, points<=10
     3S     Invitational raise: four spades
            shows S>=4, tp(S)=11..12
     4S     Game: four spades
            shows S>=4, tp(S)>=13
     2H     Weak: six or more hearts
            shows H>=6, points<=10
     1N     6-10, no spade fit
            shows points<=10, S<=3
     2N     Invitational: 11-12, no spade fit
            shows points=11..12, S<=3
     3N     Game: 13+, no spade fit
            shows points>=13, S<=3
     4N     Quantitative: invites 6NT, no spade fit
            shows balanced, S<=3, points+partner.points.min>=31, points+partner.points.min<=32
            when  q4n
     6N     Slam in notrump, no spade fit
            shows balanced, S<=3, points+partner.points.min>=33

   after 1C (P) 1x (P) 2C (P)
     P      Weak: no game
            shows points<=10
     2N     Invitational: 11-12
            shows points=11..12
     3N     Game: 13+
            shows points>=13

   after 1C (P) 1x (P) 3C (P)
     P      Weak: no game
            shows points<=8
     3N     Game: 9+
            shows points>=9
     5C     Game in clubs: 9+, three clubs, a suit unstopped
            shows C>=3, points>=9, !balanced

   after 1C (P) 1S (P) 2D (P)
     P      Weak: no game
            shows tp(D)<=10
     3D     Invitational: 11-12
            shows tp(D)=11..12
     3N     Game: 13+
            shows points>=13

   after 1C (P) 1D (P) 1H (P) 1S (P)
     2S     Four spades, minimum
            shows S>=4, tp(S)<=15
     3S     Four spades, 16-18
            shows S>=4, tp(S)=16..18
     4S     Four spades, 19+
            shows S>=4, tp(S)>=19
     2H     Four hearts, minimum
            shows H>=4, S<=3, suit_points<=15
     2C     Six or more clubs, minimum
            shows C>=6, S<=3, H<=3, suit_points<=15
     2N     18-19, balanced
            shows balanced, hcp=18..19, S<=3
     1N     Minimum, no four spades
            shows hcp<=14, S<=3
     3N     15+, no four spades
            shows hcp>=15, S<=3

   after 1C (P) 1x (P) 2z (P)
     when we.forcing=round
     2N     Forced: minimum, no fit
            shows points<=7
     3N     Game: 8+
            shows points>=8
     3C     Three or more clubs, 8+: game forcing
            shows C>=3, points>=8
     3z     Four {z}, 8+: game forcing
            shows z>=4, points>=8

   after 1C (P) 1D (P) 2z (P)
     when we.forcing=round
     2H     Five or more hearts
            shows H>=5
            when  z is D

   after 1C (P) 1H (P) 2z (P)
     when we.forcing=round
     2S     Five or more spades
            shows S>=5

   after 1C (P) 1D (P) 2z (P) 2H (P) | 1C (P) 1H (P) 2z (P) 2S (P)
     2N     No fit, minimum reverse
            shows hcp<=18
     3N     No fit, 19+
            shows hcp>=19

   after 1C (P) 1D (P) 2z (P) 2H (P)
     3H     Two hearts: the 5-2 fit
            shows H=2

   after 1C (P) 1H (P) 2z (P) 2S (P)
     3S     Two spades: the 5-2 fit
            shows S=2

== two-way-nmf: Two-way New Minor Forcing (xyNT)
   file: conventions/base/two-way-nmf.bid
   needs: responder-rebids
   skills: bidding_conventions/two_way_nmf

   after 1x (P) 1y (P) 1N (P)
     when twoway | xyz, !tw(x)
     2C     xyNT: relay to 2♦, invitational or a diamond sign-off  [alert]  [artificial]
            shows points=11..12 | (D>=6, points<=10, y is not D, x is not D)
     2D     xyNT: artificial game force  [alert]  [artificial]
            shows points>=13, y>=5 | (H>=4, S>=4) | !balanced
     2N     xyNT: relay to 3♣, a club sign-off  [alert]  [artificial]
            shows C>=6, points<=10
            when  x is not C, y is not C
     3y     Slam try: six or more {y}
            shows y>=6, points>=16

   after (any auction)
     when asked xy_relay
     2D     Forced relay  [alert]  [artificial]

   after (any auction)
     when asked xy_clubs
     3C     Forced relay  [alert]  [artificial]

   after 1x (P) 1M (P) 1N (P) 2C (P) 2D (P)
     when twoway | xyz, !tw(x)
     P      To play in 2♦
            shows D>=6, points<=10
     2M     Invitational: five {M}
            shows M=5, points=11..12
     3M     Invitational: six {M}
            shows M>=6, points=11..12
     2N     Invitational, balanced
            shows points=11..12, M<=5

   after 1C (P) 1D (P) 1N (P) 2C (P) 2D (P)
     when twoway | xyz, !tw(C)
     P      Weak
            shows points<=10
     3D     Invitational: six diamonds
            shows D>=6, points=11..12
     2N     Invitational, balanced
            shows points=11..12

   after 1x (P) 1y (P) 1N (P) 2N (P) 3C (P)
     when twoway | xyz, !tw(x)
     P      To play in 3♣
            shows C>=6

   after (any auction)
     when asked xy_gf
     2H     Three hearts
            shows H=3
            when  partner.H>=4
     2S     Three spades
            shows S=3
            when  partner.S>=4
     2H     Four hearts, not three spades
            shows H>=4, S<=2
            when  partner.S>=4
     2N     No fit to show

   after (any auction)
     when answered xy_gf
     4H     Game in the heart fit
            shows H>=5 | (H>=4, partner.H.min>=4)
            when  partner.H>=3
     4S     Game in the spade fit
            shows S>=5 | (S>=4, partner.S.min>=4)
            when  partner.S>=3
     4H     Game: six hearts
            shows H>=6
     4S     Game: six spades
            shows S>=6
     3N     Game, no major fit

== weak-jump-shifts: Weak jump shifts
   file: conventions/base/weak-jump-shifts.bid
   needs: responses
   skills: bidding_conventions/weak_jump_shifts
   define two_level_jump(x, y) = y is C | (y is D, x is H | x is S) | (y is H, x is S)

   after 1x (P) 2y (P)
     when weak2, y is not x, partner.jumped
     P      To play: two of {y}
     4y     Game: 18+ with two or more {y}
            shows y>=2, hcp>=18
            when  y is H | y is S
     3y     Raise: 3+ {y}, 16-17, invitational
            shows y>=3, hcp=16..17
     2N     Forcing game try: asks for a feature  [alert]  [artificial]
            shows y>=3, hcp>=16, hcp<=17 | y is C | y is D
     3x     Rebids {x}: seven or more, not forcing
            shows x>=7, y<=1, hcp<=17
     3x     Rebids {x}: six or more, 18+, not forcing
            shows x>=6, y<=1, hcp>=18
            when  x is C | x is D
     4x     Game in my own major: seven, or six good ones, 18+
            shows x>=7 | (x>=6, quality(x)>=good), y<=1, hcp>=18
            when  x is H | x is S
     cheapest(z) New suit: 4+ {z}, 17+, forcing
            shows z>=4, hcp>=17, y<=1
            when  z is not x, z is not y

   after 1x (P) 2y (P) 2N (P)
     when weak2, y is not x
     3N     Maximum: 4-5, two of the top three honours
            shows hcp>=4, quality(y)>=good
     3z     Maximum: 4-5, a feature in {z}
            shows hcp>=4, has(A,z) | has(K,z)
            when  z is not y
     3y     Minimum: 2-3, or no feature

   after 1x (P) 2y (P) 2N (P) 3y (P)
     when weak2, y is not x
     P      Minimum: to play
     4y     Game
            shows hcp>=17, y>=3
            when  y is H | y is S

   after 1x (P) 2y (P) 2N (P) 3z (P)
     when weak2, y is not x, z is not y
     4y     Game in {y}
            shows y>=2
            when  y is H | y is S
     3N     Game in notrump
            when  y is C | y is D

   after 1x (P) 2y (P) 2N (P) 3N (P)
     when weak2, y is not x
     P      No further bid

   after 1x (P) 2y (P) 3x (P)
     when weak2, y is not x
     P      Opener's suit: play here

   after 1x (P) 2y (P) 3y (P)
     when weak2, y is not x
     P      Minimum: play three
     4y     Maximum: 4-5, game
            shows hcp>=4
            when  y is H | y is S

   after 1x (P) 2y (P) 2z (P) | 1x (P) 2y (P) 3z (P)
     when weak2, y is not x, z is not x, z is not y
     3z     Raise: four {z}
            shows z>=4
     cheapest(y) Rebids {y}: no fit
            shows y>=6
     cheapest(x) Preference for {x}
            shows x>=2

   after 1x (P) 2y (P) 2z (P) * (P) | 1x (P) 2y (P) 3z (P) * (P)
     when weak2, y is not x, z is not x, z is not y
     P      No game: stop here
     4z     Game in the fit
            shows z>=4, hcp>=19
            when  partner.z>=4, z is H | z is S
     3N     Game in notrump: 22+
            shows hcp>=22

   after 1x (P) 3y (P)
     when weak3, y is not x, partner.jumped
     P      No further bid
     4y     Game: 17+ with two or more {y}
            shows y>=2, hcp>=17
            when  y is H | y is S
     3N     To play: 18+, a fit for {y}, side suits stopped
            shows y>=2, hcp>=18
            when  y is C | y is D
     4x     Game in my own major: seven, or six good ones, 16+
            shows x>=7 | (x>=6, quality(x)>=good), hcp>=16, y<=1
            when  x is H | x is S

== weak-two-responses: Responses to a weak two
   file: conventions/base/weak-two-responses.bid
   needs: preempts
   skills: bidding_conventions/weak_2s, bidding_conventions/ogust, partnership_bidding/weak_twos
   define w2_slam(t) = hcp+partner.hcp.min>=33 | (fit_slam_values(t), !two_bare_beside(t))
   define w2_solid = partner.last=3N, ask2nt is ogust | style is not bba
   define w2_fit_slam(t) = (t>=2, w2_slam(t)) | (w2_solid, t>=1, hcp>=21, S<=4 | t is S, H<=4 | t is H)

   after 2x (P)
     when weak_two_suit(x), x is not N, x is not C | two_c is natural, style is standard
     2N     Asks: how good is the weak two?  [alert]  [artificial]
            shows hcp>=15
     3x     Preemptive raise: four-card support
            shows x>=4, hcp<=14
     4x     Game in the fit
            shows x>=4, hcp>=14
            when  x is H | x is S
     P      No interest
            shows hcp<=14

   after 2x (P)
     when weak_two_suit(x), x is not N, x is not C | two_c is natural, style is not standard
     2N     Asks: how good is the weak two?  [alert]  [artificial]
            shows hcp>=13
            when  hcp>=20 | (x>=2, hcp>=15) | (x<=1, hcp>=18) | (x is H | x is S, x=2, hcp>=14, vul | !they.vul) | (x is H | x is S, x>=3, vul) | (x is H | x is S, x>=4, !they.vul)
     3x     Preemptive raise: four-card support
            shows x>=4, hcp<=11, hcp>=5 | shortest<=1
     3x     Preemptive raise: four-card support
            shows x>=4, hcp<=4
            when  !vul, !they.vul
     4x     Preemptive game raise: four trumps and a singleton
            shows x>=4, shortest<=1, hcp<=9
            when  !vul
     4x     Game in the fit
            shows x>=3, hcp=15..19
            when  x is H | x is S, vul | (!they.vul, hcp>=16 | x>=4) | hcp>=18
     4x     Game with five-card support
            shows x>=5, hcp=13..19
            when  x is H | x is S
     3N     To play: 16+, help in diamonds, the side suits stopped
            shows hcp>=16, x>=2, stop(S), stop(H), stop(C), H<=5, S<=5
            when  x is D
     5x     Game in diamonds: three-card support, 18-20
            shows x>=3, hcp=18..20
            when  x is D
     2H     Natural, forcing: 5+ hearts, 13+
            shows H>=5, hcp>=13
            when  x is D, H>=6 | hcp=14
     2S     Natural, forcing: 5+ spades, 13+
            shows S>=5, hcp>=13
            when  x is D, S>=6 | hcp=14
     2S     Natural, forcing: 5+ spades, 13+
            shows S>=5, hcp>=13, H<=1
            when  x is H
     P      No interest
            shows hcp<=19

   after 2x (P) 2y (P)
     when weak_two_suit(x), x is not C | two_c is natural, style is not standard
     4y     Three-card support: game
            shows y>=3
            when  y is H | y is S
     3y     Three-card support
            shows y>=3
     3x     No fit: rebid the suit
            shows y<=2

   after 2x (P) 2y (P) 3x (P)
     when weak_two_suit(x), x is not C | two_c is natural, style is not standard, y is H | y is S
     4y     To play: 7+ {y}
            shows y>=7
     4y     To play: 6+ {y}, four top honours
            shows y>=6, top5(y)>=4, hcp>=16
     3y     Six-card suit, 19+: forcing, asks for a doubleton
            shows y>=6, hcp>=19
     4x     Game in partner's suit: 20+
            shows hcp>=20
            when  x is H | x is S
     3N     Game in notrump: 20+, no fit
            shows hcp>=20
            when  x is D
     P      No game
            shows hcp<=19

   after 2x (P) 2y (P) 3x (P) 3y (P)
     when weak_two_suit(x), x is not C | two_c is natural, style is not standard, y is H | y is S
     4y     A doubleton: game in partner's suit
            shows y>=2
     3N     A singleton or void: 3NT
            shows y<=1

   after (any auction)
     when asked weak_two(t), ask2nt is feature, style is not bba
     3N     Solid suit: AKQ
            shows has(A,t), has(K,t), has(Q,t)
     3C     Feature: the club ace or king, maximum
            shows has(A,C) | has(K,C), hcp>=8
            when  t is not C
     3D     Feature: the diamond ace or king, maximum
            shows has(A,D) | has(K,D), hcp>=8
            when  t is not D
     3H     Feature: the heart ace or king, maximum
            shows has(A,H) | has(K,H), hcp>=8
            when  t is not H
     3S     Feature: the spade ace or king, maximum
            shows has(A,S) | has(K,S), hcp>=8
            when  t is not S
     3C     Maximum: the club queen, no side ace or king
            shows has(Q,C), hcp>=8
            when  t is not C
     3D     Maximum: the diamond queen, no side ace or king
            shows has(Q,D), hcp>=8
            when  t is not D
     3H     Maximum: the heart queen, no side ace or king
            shows has(Q,H), hcp>=8
            when  t is not H
     3S     Maximum: the spade queen, no side ace or king
            shows has(Q,S), hcp>=8
            when  t is not S
     3C     Maximum: AK of the suit and the club jack
            shows has(A,t), has(K,t), has(J,C), hcp>=8
            when  t is not C
     3D     Maximum: AK of the suit and the diamond jack
            shows has(A,t), has(K,t), has(J,D), hcp>=8
            when  t is not D
     3H     Maximum: AK of the suit and the heart jack
            shows has(A,t), has(K,t), has(J,H), hcp>=8
            when  t is not H
     3S     Maximum: AK of the suit and the spade jack
            shows has(A,t), has(K,t), has(J,S), hcp>=8
            when  t is not S
     3{t}   Minimum, or nothing outside the suit
            shows hcp<=10

   after (any auction)
     when asked weak_two(t), ask2nt is feature, style is bba
     3C     Feature: 8-10, A, Kx or Qxx in clubs
            shows hcp>=8, has(A,C) | (has(K,C), C>=2) | (has(Q,C), C>=3)
            when  t is not C
     3D     Feature: 8-10, A, Kx or Qxx in diamonds
            shows hcp>=8, has(A,D) | (has(K,D), D>=2) | (has(Q,D), D>=3)
            when  t is not D
     3H     Feature: 8-10, A, Kx or Qxx in hearts
            shows hcp>=8, has(A,H) | (has(K,H), H>=2) | (has(Q,H), H>=3)
            when  t is not H
     3S     Feature: 8-10, A, Kx or Qxx in spades
            shows hcp>=8, has(A,S) | (has(K,S), S>=2) | (has(Q,S), S>=3)
            when  t is not S
     3N     Maximum: 8-10, no side feature
            shows hcp>=8
     3{t}   Minimum, 5-7
            shows hcp<=7

   after (any auction)
     when asked weak_two(t), ask2nt is ogust
     3C     Ogust: minimum, poor suit  [artificial]
            shows hcp<=7, quality(t)<=1
     3D     Ogust: minimum, good suit  [artificial]
            shows hcp<=7, quality(t)>=2
     3H     Ogust: maximum, poor suit  [artificial]
            shows hcp>=8, quality(t)<=1
     3S     Ogust: maximum, good suit  [artificial]
            shows hcp>=8, quality(t)>=2
     3N     Ogust: the top three honours
            shows quality(t)=3

   after 2x (P) 2N (P) 3N (P) 4x (P)
     when weak_two_suit(x), x is C | x is D, style is bba
     5x     A shortness: game in the minor
            shows shortest<=1
     P      No shortness: play four
            shows shortest>=2

   after (any auction)
     when answered weak_two(t), style is bba, !partner.last=3{t}
     4{t}   Game: to play
            shows hcp>=13
            when  t is H | t is S
     3N     Game: to play
            shows hcp>=13
            when  t is C | t is D, !partner.last=3N
     P      To play: 3NT
            shows hcp>=17
            when  t is C | t is D, partner.last=3N
     4{t}   Doubt about 3NT: 15-16
            shows hcp<=16
            when  t is C | t is D, partner.last=3N

   after (any auction)
     when answered weak_two(t)
     4N     Keycard ask in {t}  [artificial]
            shows w2_fit_slam(t)
            when  k1430 | k0314
     4N     Blackwood: aces, {t} agreed  [artificial]
            shows w2_fit_slam(t)
            when  aces, !k1430, !k0314
     3S     Natural: five or more spades, slam interest
            shows S>=5, S>=H, t<=1, hcp+partner.hcp.min>=27
            when  t is not S, partner.last=3C | partner.last=3D | partner.last=3H
     3H     Natural: five or more hearts, slam interest
            shows H>=5, H>S, t<=1, hcp+partner.hcp.min>=27
            when  t is not H, partner.last=3C | partner.last=3D
     4{t}   Game in the weak two suit
            shows hcp>=17
            when  t is H | t is S
     3N     Game in notrump
            shows hcp>=17
            when  t is C | t is D
     4{t}   Game: to play
            shows hcp+partner.hcp.min>=21
            when  t is H | t is S
     3N     Game: to play
            shows hcp+partner.hcp.min>=21
            when  t is C | t is D
     P      To play
            when  partner.last=3{t}
     4{t}   Sign off in {t}
            shows hcp<=16
            when  partner.last=3N, t is H | t is S
     3{t}   Sign off in {t}
            shows hcp<=16
     3N     To play in 3NT
            shows hcp<=16
     4{t}   Sign off in {t}
            shows hcp<=16
            when  t is H | t is S
     P      No game
            shows hcp<=16

   after 2x (P) 2N (P) 3y (P) 3x (P)
     when weak_two_suit(x), x is not C | two_c is natural, y is not x
     P      No further bid

   after 2x (P) 2N (P) 3y (P) 3z (P)
     when weak_two_suit(x), x is not C | two_c is natural, z is H | z is S, z is not x, y is not z
     4z     Three-card support: agrees {z}
            shows z>=3
     3N     No support for {z}
            shows z<=2

   after 2x (P) 2N (P) 3y (P) 3z (P) 3N (P)
     when weak_two_suit(x), x is not C | two_c is natural, z is H | z is S, z is not x, y is not z
     6N     Slam in notrump
            shows hcp+partner.hcp.min>=33
     4z     Six-card suit: game in it
            shows z>=6
     P      To play

   after 2x (P) 3x (P)
     when weak_two_suit(x), x is not C | two_c is natural
     P      No further bid

== wolff: Wolff sign-off after opener's 2NT rebid
   file: conventions/base/wolff.bid
   card: other_conventions.wolff_signoff.play
   needs: base
   skills: bidding_conventions/wolff_signoff

   after 1x (P) 1y (P) 2N (P)
     when !tw(x)
     3C     Wolff: relay to 3♦, to sign off  [alert]  [artificial]
            shows points<=6, D>=6 | (y>=6, y is H) | (y>=6, y is S)
            when  y is not C

   after (any auction)
     when asked wolff
     3D     Wolff: the forced 3♦  [alert]  [artificial]

   after (any auction)
     when answered wolff, partner.last=3D
     P      To play in 3♦
            shows D>=6
     3y     To play in {y}
            shows y>=6
            when  y is H | y is S

== xyz: XYZ: 2♣ relay and 2♦ game force after three one-level bids
   file: conventions/base/xyz.bid
   card: other_conventions.xyz
   needs: two-way-nmf
   skills: bidding_conventions/xyz

   after 1x (P) 1y (P) 1z (P)
     when !tw(x)
     2C     XYZ: relay to 2♦, invitational or a diamond sign-off  [alert]  [artificial]
            shows points=11..12 | (points<=10, D>=6 | (x is D, D>=4, z<=2))
     2D     XYZ: artificial game force  [alert]  [artificial]
            shows points>=13
     2N     XYZ: relay to 3♣, a club sign-off  [alert]  [artificial]
            shows points<=10, C>=6 | (x is C, C>=5, z<=2)

   after 1x (P) 1y (P) 1z (P) 2C (P) 2D (P)
     when !tw(x)
     P      To play in 2♦
            shows points<=10
     2y     Invitational: five {y}
            shows y=5, points=11..12
            when  y is H | y is S
     3y     Invitational: six {y}
            shows y>=6, points=11..12
     3z     Invitational raise: four {z}
            shows z>=4, tp(z)=11..12
     2N     Invitational, balanced
            shows points=11..12, z<=3
     3x     Invitational: four {x}
            shows x>=4, points=11..12, z<=3
            when  x is C | x is D

   after 1x (P) 1y (P) 1z (P) 2N (P) 3C (P)
     when !tw(x)
     P      To play in 3♣
            shows C>=4

== advances: Advancing partner's overcall
   file: conventions/competitive/advances.bid
   needs: base, overcalls
   skills: competitive_bidding/advancing_overcalls, competitive_bidding/support_cuebids, competitive_bidding/mixed_raise

   after (1x) 1y (P)
     2{y}   Raise: 8-11 with three {y}, up to 11 with four
            shows y>=3, hcp+length_points<=11, hcp+length_points>=8 | y>=4
     3{y}   Preemptive raise: five {y}, four at favourable; under 8 points
            shows y>=4, hcp+length_points<=7, weak_jump_raise(y)
            when  jump_raise is weak
     1S     8+ total points, four or more spades
            shows S>=4, hcp+length_points>=8
            when  x is not S, y is not S
     1N     8-11 total points, balanced, a stopper in {x}
            shows balanced, hcp+length_points>=8, hcp+length_points<=11
            when  stop(x), S<=3 | x is S | y is S, H<=3 | x is H | y is H, y<=2 | y is C | y is D
     cheapest(C) 9+ total points, five or more clubs
            shows C>=5, hcp+length_points>=9
            when  x is not C, y is not C
     cheapest(D) 9+ total points, five or more diamonds
            shows D>=5, hcp+length_points>=9
            when  x is not D, y is not D
     cheapest(H) 9+ total points, five or more hearts
            shows H>=5, hcp+length_points>=9
            when  x is not H, y is not H
     2{x}   Cue bid: limit raise or better in {y}  [alert]  [artificial]
            shows y>=3, hcp+length_points>=12
     2N     12-15 total points, balanced, a stopper in {x}
            shows balanced, hcp+length_points>=12, hcp+length_points<=15
            when  stop(x), y<=2
     3{x}   Mixed raise: 4+ {y}, 7-9 support points  [alert]  [artificial]
            shows y>=4, tp(y)=7..9
            when  mixed, !vul
     P      Not enough to advance

   after (1x) P (P) 1y (P)
     2{y}   Raise: 9-11 total points, three-card support
            shows y>=3, hcp+length_points>=9, hcp+length_points<=11
     3{y}   Preemptive raise: four-card support, under 9 points
            shows y>=4, hcp+length_points<=8
            when  jump_raise is weak
     1S     7+ total points, four or more spades
            shows S>=4, hcp+length_points>=7
            when  x is not S, y is not S
     1N     10-11 total points, balanced, a stopper in {x}
            shows balanced, hcp+length_points>=10, hcp+length_points<=11
            when  stop(x), S<=3 | x is S | y is S, H<=3 | x is H | y is H, y<=2 | y is C | y is D
     cheapest(C) 11+ total points, five or more clubs
            shows C>=5, hcp+length_points>=11
            when  x is not C, y is not C
     cheapest(D) 11+ total points, five or more diamonds
            shows D>=5, hcp+length_points>=11
            when  x is not D, y is not D
     cheapest(H) 11+ total points, five or more hearts
            shows H>=5, hcp+length_points>=11
            when  x is not H, y is not H
     2{x}   Cue bid: limit raise or better in {y}  [alert]  [artificial]
            shows y>=3, hcp+length_points>=13
     2N     13-15 total points, balanced, a stopper in {x}
            shows balanced, hcp+length_points>=13, hcp+length_points<=15
            when  stop(x), y<=2
     P      Not enough to advance a reopening bid

   after (1x) 1y (X) | (1x) P (P) 1y (X)
     2{y}   Raise: 8-11 with three {y}, up to 11 with four
            shows y>=3, hcp+length_points<=11, hcp+length_points>=8 | y>=4
     3{y}   Preemptive raise: five {y}, four at favourable; under 8 points
            shows y>=4, hcp+length_points<=7, weak_jump_raise(y)
     P      Not enough to advance

   after (1x) 1y (1z) | (1x) P (P) 1y (1z)
     2{y}   Raise: 8-11 with three {y}, up to 11 with four
            shows y>=3, hcp+length_points<=11, hcp+length_points>=8 | y>=4
     3{y}   Preemptive raise: five {y}, four at favourable; under 8 points
            shows y>=4, hcp+length_points<=7, weak_jump_raise(y)
     1N     8-11 total points, balanced, a stopper in {x}
            shows balanced, hcp+length_points>=8, hcp+length_points<=11
            when  stop(x), y<=2
     cheapest(S) Free bid: 9+ total points, five or more spades
            shows S>=5, hcp+length_points>=9
            when  x is not S, y is not S, z is not S
     cheapest(H) Free bid: 9+ total points, five or more hearts
            shows H>=5, S<=4, hcp+length_points>=9
            when  x is not H, y is not H, z is not H
     P      Not enough to advance

   after (1x) 1y (X) | (1x) 1y (1z)
     3{x}   Mixed raise: 4+ {y}, 7-9 support points  [alert]  [artificial]
            shows y>=4, tp(y)=7..9
            when  mixed, !vul

   after (1x) 1y (2z) | (1x) P (P) 1y (2z)
     2{y}   Raise: 7-11 total points, three-card support
            shows y>=3, hcp+length_points>=7, hcp+length_points<=11
     3{y}   Raise: four-card support, 8-11 total points
            shows y>=4, hcp+length_points>=8, hcp+length_points<=11
     P      Not enough to advance

   after (1x) 2y (*) | (1x) P (P) 2y (*)
     when y is not x
     P      Not enough to advance

   after (1x) 2y (P) | (1x) 2y (X) | (1x) 2y (2x)
     when y is not x, x is C | (x is D, y is not C) | (x is H, y is S)
     4{y}   Raise to game: four-card support, 11+
            shows y>=4, hcp+length_points>=11
            when  y is H | y is S
     3{y}   Preemptive raise: three-card support, under 11 points
            shows y>=3, hcp+length_points<=10
            when  y is H | y is S
     3{y}   Preemptive raise: four-card support, under 11 points
            shows y>=4, hcp+length_points<=10
            when  y is C | y is D

   after (1x) 2y (P) | (1x) 2y (X) | (1x) 2y (2x)
     when y is not x, x is S | (x is H, y is not S) | (x is D, y is C)
     4{y}   Raise to game in partner's major: four-card support, 13+
            shows y>=4, hcp+length_points>=13
            when  y is H | y is S
     3{y}   Raise: 7-10 total points, four-card support
            shows y>=4, hcp+length_points>=7, hcp+length_points<=10
     cheapest(x) Cue bid: limit raise or better in {y}  [alert]  [artificial]
            shows y>=3, hcp+length_points>=11
     2N     11-12 total points, balanced, a stopper in {x}
            shows balanced, hcp+length_points>=11, hcp+length_points<=12
            when  stop(x), y<=2
     3N     13+ total points, balanced, a stopper in {x}
            shows balanced, hcp+length_points>=13
            when  stop(x), y<=2
     cheapest(S) 10+ total points, five or more spades
            shows S>=5, hcp+length_points>=10
            when  x is not S, y is not S
     cheapest(H) 10+ total points, five or more hearts
            shows H>=5, S<=4, hcp+length_points>=10
            when  x is not H, y is not H
     cheapest(D) 12+ total points, five or more diamonds
            shows D>=5, S<=4, H<=4, hcp+length_points>=12
            when  x is not D, y is not D
     cheapest(C) 12+ total points, five or more clubs
            shows C>=5, S<=4, H<=4, hcp+length_points>=12
            when  x is not C, y is not C

   after (1x) 1y (1N) | (1x) P (P) 1y (1N)
     2{y}   Raise: 9-11 total points, three-card support
            shows y>=3, hcp+length_points>=9, hcp+length_points<=11
     cheapest(x) Cue bid: limit raise or better in {y}  [alert]  [artificial]
            shows y>=3, hcp+length_points>=12
     P      Not enough to advance

   after (any auction)
     when asked cue_raise(t)
     4{t}   Accepts: game in {t}
            shows hcp+length_points>=13
            when  t is H | t is S
     3N     Accepts: 13+ balanced, game in notrump
            shows balanced, hcp+length_points>=13
            when  t is C | t is D
     cheapest(t) Minimum: signs off

   after (1x) 1y (P) 3x (P) | (1x) 1y (X) 3x (P) | (1x) 1y (1z) 3x (P)
     4{y}   Accepts: game in {y}
            shows hcp+length_points>=16
            when  mixed, y is H | y is S
     3N     Accepts: 16+ balanced, game in notrump
            shows balanced, hcp+length_points>=16, stop(x)
            when  mixed, y is C | y is D
     3{y}   Minimum: signs off
            when  mixed

   after (1x) 1y (P) 1z (P)
     2{z}   Four-card support
            shows z>=4
     2{y}   Six or more {y}
            shows y>=6, z<=3
     1N     11-14 balanced, {x} held
            shows balanced, hcp>=11, hcp<=14, stop(x), z<=3
     P      No further bid

   after (1x) 1y (P) 2z (P)
     3{z}   Four-card support
            shows z>=4, hcp>=11
     2{y}   Six or more {y}
            shows y>=6, z<=3
            when  y is not C
     P      No further bid

   after (1x) 1y (2x) P (P)
     2{y}   Competes: six or more {y}
            shows y>=6, hcp>=10
     P      No further bid

   after (1x) P (1y) 1z (*) | (1x) P (1y) 2z (*)
     when z is not x, z is not y
     cheapest(z) Raise: three-card support, 7+ total points
            shows z>=3, hcp+length_points>=7
            when  cheapest_rank(z)<=13
     cheapest(z) Competitive raise to three: four-card support
            shows z>=4, hcp+length_points>=6
            when  cheapest_rank(z)>=15, cheapest_rank(z)<=18
     jump(z) Preemptive raise: four-card support, weak
            shows z>=4, hcp+length_points<=7, weak_jump_raise(z)
            when  cheapest_rank(z)<=13, rho.last=P | rho.last=X
     P      Not enough to advance

   after (1x) P (1y) X (P)
     when y is not x
     cheapest(S) Answers the double: four or more spades
            shows S>=4, S>=H | x is H | y is H, S>=D | x is D | y is D, S>=C | x is C | y is C, hcp<=8
            when  x is not S, y is not S
     cheapest(H) Answers the double: four or more hearts
            shows H>=4, H>S | x is S | y is S, H>=D | x is D | y is D, H>=C | x is C | y is C, hcp<=8
            when  x is not H, y is not H
     cheapest(D) Answers the double: four or more diamonds
            shows D>=4, D>S | x is S | y is S, D>H | x is H | y is H, D>=C | x is C | y is C, hcp<=8
            when  x is not D, y is not D
     cheapest(C) Answers the double: four or more clubs
            shows C>=4, C>S | x is S | y is S, C>H | x is H | y is H, C>D | x is D | y is D, hcp<=8
            when  x is not C, y is not C
     jump(S) Jump answer: four or more spades, 9-11
            shows S>=4, S>=H | x is H | y is H, hcp>=9
            when  x is not S, y is not S
     jump(H) Jump answer: four or more hearts, 9-11
            shows H>=4, H>S | x is S | y is S, hcp>=9
            when  x is not H, y is not H
     jump(D) Jump answer: four or more diamonds, 9-11
            shows D>=4, D>S | x is S | y is S, D>H | x is H | y is H, hcp>=9
            when  x is not D, y is not D, cheapest_rank(D)<=13
     jump(C) Jump answer: four or more clubs, 9-11
            shows C>=4, C>S | x is S | y is S, C>H | x is H | y is H, C>D | x is D | y is D, hcp>=9
            when  x is not C, y is not C, cheapest_rank(C)<=13
     1N     6-10, both their suits stopped
            shows hcp>=6, hcp<=10, stop(x), stop(y)
     cheapest(S) Answers the double: three spades
            shows S>=3, S>=H | x is H | y is H, S>=D | x is D | y is D, S>=C | x is C | y is C
            when  x is not S, y is not S
     cheapest(H) Answers the double: three hearts
            shows H>=3, H>=D | x is D | y is D, H>=C | x is C | y is C
            when  x is not H, y is not H
     cheapest(D) Answers the double: the longer unbid suit
            when  x is not D, y is not D
     cheapest(C) Answers the double: the longer unbid suit
            when  x is not C, y is not C

   after (1x) P (1y) X (*)
     when y is not x, !rho.last=P
     cheapest(S) Free bid: four or more spades
            shows S>=4, hcp+length_points>=7
            when  x is not S, y is not S, cheapest_rank(S)<=13
     cheapest(H) Free bid: four or more hearts
            shows H>=4, S<=H | x is S | y is S, hcp+length_points>=7
            when  x is not H, y is not H, cheapest_rank(H)<=13
     cheapest(D) Free bid: five or more diamonds
            shows D>=5, hcp+length_points>=7
            when  x is not D, y is not D, cheapest_rank(D)<=13
     cheapest(C) Free bid: five or more clubs
            shows C>=5, hcp+length_points>=7
            when  x is not C, y is not C, cheapest_rank(C)<=13
     P      Not enough to advance

   after (1N) 2y (*) | (1N) 3y (*)
     P      Not enough to advance

   after (any auction)
     when lho.opened | rho.opened
     P      No further bid
            when  !passes_out_artificial

== after-interference: Our side once the opponents come in
   file: conventions/competitive/after-interference.bid
   needs: base
   skills: competitive_bidding/negative_doubles, partnership_bidding/negative_doubles, competitive_bidding/support_cuebids

   after 1x (1y)
     when neg
     X      Negative double: 6+ total points, the unbid suits  [alert]  [artificial]
            shows hcp+length_points>=6, S>=4 | x is S | y is S, H>=4 | x is H | y is H, (D>=4 | x is D | y is D, C>=4 | x is C | y is C) | S>=4 | H>=4
            when  S<=4 | x is S | y is S, H<=4 | x is H | y is H | (y is S, hcp<=7), x<=2 | x is C | x is D

   after 1x (1y) | 1x (2y)
     when y is not x, neg
     P      No suitable bid
            when  y>=4, quality(y)>=good | top5(y)>=3, hcp>=8, x<=2

   after 1x (1y)
     1S     6+ total points, four or more spades
            shows S>=4, hcp+length_points>=6
            when  x is not S, y is not S, S>=5 | (x is not H, y is not H, H<=3)
     1H     6+ total points, four or more hearts
            shows H>=4, hcp+length_points>=6
            when  x is not H, y is not H, y is not S, H>=5 | (x is not S, y is not S, S<=3)
     1N     6-10 total points, balanced, a stopper in {y}
            shows balanced, hcp+length_points>=6, hcp+length_points<=10
            when  stop(y), S<=3 | x is S | y is S, H<=3 | x is H | y is H
     2{x}   Raise: 6-9 total points, support for partner's suit
            shows x>=3, hcp+length_points>=6, hcp+length_points<=9, minor_raise(x)
            when  S<=3 | x is S | y is S, H<=3 | x is H | y is H
     jump(x) Preemptive raise: five-card support, six in a minor, under 8
            shows x>=5, hcp+length_points<=7, minor_preempt(x)
     cheapest(C) 8+ total points, five or more clubs
            shows C>=5, hcp+length_points>=8
            when  x is not C, y is not C, new_suit_forcing
     cheapest(D) 8+ total points, five or more diamonds
            shows D>=5, hcp+length_points>=8
            when  x is not D, y is not D, new_suit_forcing
     2H     8+ total points, five or more hearts
            shows H>=5, hcp+length_points>=8
            when  y is S, x is not H, new_suit_forcing
     cheapest(C) 8-12 total points, five or more clubs, not forcing
            shows C>=5, hcp+length_points>=8, hcp<=12
            when  x is not C, y is not C, !new_suit_forcing
     cheapest(D) 8-12 total points, five or more diamonds, not forcing
            shows D>=5, hcp+length_points>=8, hcp<=12
            when  x is not D, y is not D, !new_suit_forcing
     2H     8-12 total points, five or more hearts, not forcing
            shows H>=5, hcp+length_points>=8, hcp<=12
            when  y is S, x is not H, !new_suit_forcing
     jump(C) 13+ total points, five or more clubs: forcing to game
            shows C>=5, hcp>=13
            when  x is not C, y is not C, !new_suit_forcing, js is strong, H<=4 | y is not S | x is H
     jump(D) 13+ total points, five or more diamonds: forcing to game
            shows D>=5, hcp>=13
            when  x is not D, y is not D, !new_suit_forcing, js is strong, H<=4 | y is not S | x is H
     3H     13+ total points, five or more hearts: forcing to game
            shows H>=5, hcp>=13
            when  y is S, x is not H, !new_suit_forcing, js is strong
     cheapest(y) Cue bid: limit raise or better in {x}  [alert]  [artificial]
            shows x>=3, hcp+length_points>=11
            when  cue_raise, x is H | x is S | x>=4
     2N     11-12 total points, balanced, a stopper in {y}
            shows balanced, hcp+length_points>=11, hcp+length_points<=12
            when  stop(y), S<=3 | x is S | y is S, H<=3 | x is H | y is H
     3N     13+ total points, balanced, a stopper in {y}
            shows balanced, hcp+length_points>=13
            when  stop(y), S<=3 | x is S | y is S, H<=3 | x is H | y is H
     P      No suitable bid

   after 1x (1y) 2y (3y)
     when y is not x
     4{x}   Game: 16+
            shows hcp>=16
            when  x is H | x is S
     3N     Game: 16+ with a stopper in {y}
            shows hcp>=16, stop(y)
            when  x is C | x is D
     5{x}   Game: 16+, no stopper in {y}
            shows hcp>=16
            when  x is C | x is D
     4{x}   Competes: five or more {x}
            shows x>=5
            when  x is C | x is D
     P      No game

   after 1x (1y) 2y (3y) P (P)
     when y is not x
     4{x}   Game: 13+
            shows hcp+length_points>=13
            when  x is H | x is S
     3N     Game: 13+ with a stopper in {y}
            shows hcp+length_points>=13, stop(y)
            when  x is C | x is D
     5{x}   Game in the minor: 14+
            shows hcp+length_points>=14
            when  x is C | x is D
     P      Limit raise only

   after 1x (1y) 2y (3y) 4x (P)
     when x is C | x is D, y is not x
     5{x}   Game in the minor: 13+
            shows hcp+length_points>=13
     P      Limit raise only

   after 1x (1y)
     when y is not x, js is weak, !passed_hand | !fsj
     jump(S) Weak jump shift: six or more spades, 2-7 HCP
            shows S>=6, hcp=2..7
            when  x is not S, y is not S, cheapest_rank(S)<=8, x<=2 | x is C | x is D
     jump(H) Weak jump shift: six or more hearts, 2-7 HCP
            shows H>=6, hcp=2..7
            when  x is not H, y is not H, cheapest_rank(H)<=8, x<=2 | x is C | x is D

   after 1x (1y) 2z (P)
     when partner.jumped, js is weak, z is not x, z is not y
     P      No further bid

   after 1x (2y) | 1x (3y)
     when y is not x
     X      Negative double: 8+ total points, the unbid suits  [alert]  [artificial]
            shows hcp+length_points>=8, S>=4 | x is S | y is S, H>=4 | x is H | y is H, (D>=4 | x is D | y is D, C>=4 | x is C | y is C) | S>=4 | H>=4
            when  S<=4 | x is S | y is S, H<=4 | x is H | y is H, neg
     cheapest(y) Cue bid: limit raise or better in {x}  [alert]  [artificial]
            shows x>=3, hcp+length_points>=11
            when  cue_raise
     cheapest(x) Raise: 7-10, three-card support, five in a minor
            shows x>=3, hcp+length_points>=7, hcp+length_points<=10, minor_raise(x)
     cheapest(S) 10+ total points, five or more spades
            shows S>=5, hcp+length_points>=10
            when  x is not S, y is not S, new_suit_forcing
     cheapest(H) 10+ total points, five or more hearts
            shows H>=5, S<=4, hcp+length_points>=10
            when  x is not H, y is not H, new_suit_forcing
     cheapest(D) 10+ total points, five or more diamonds
            shows D>=5, S<=4, H<=4, hcp+length_points>=10
            when  x is not D, y is not D, new_suit_forcing
     cheapest(C) 10+ total points, five or more clubs
            shows C>=5, S<=4, H<=4, hcp+length_points>=10
            when  x is not C, y is not C, new_suit_forcing

   after 1x (2y) | 1x (3y)
     when y is not x, !new_suit_forcing
     cheapest(S) 10+ total points, five or more spades, not forcing
            shows S>=5, hcp+length_points>=10, hcp<=12
            when  x is not S, y is not S
     cheapest(H) 10+ total points, five or more hearts, not forcing
            shows H>=5, S<=4, hcp+length_points>=10, hcp<=12
            when  x is not H, y is not H
     cheapest(D) 10+ total points, five or more diamonds, not forcing
            shows D>=5, S<=4, H<=4, hcp+length_points>=10, hcp<=12
            when  x is not D, y is not D
     cheapest(C) 10+ total points, five or more clubs, not forcing
            shows C>=5, S<=4, H<=4, hcp+length_points>=10, hcp<=12
            when  x is not C, y is not C
     jump(S) 13+ total points, five or more spades: forcing to game
            shows S>=5, hcp>=13
            when  x is not S, y is not S
     jump(H) 13+ total points, five or more hearts: forcing to game
            shows H>=5, S<=4, hcp>=13
            when  x is not H, y is not H
     jump(D) 13+ total points, five or more diamonds: forcing to game
            shows D>=5, S<=4, H<=4, hcp>=13
            when  x is not D, y is not D
     jump(C) 13+ total points, five or more clubs: forcing to game
            shows C>=5, S<=4, H<=4, hcp>=13
            when  x is not C, y is not C

   after 1x (1y) 2z (P) | 1x (1y) 3z (P) | 1x (2y) 3z (P)
     when partner.jumped, z is not x, z is not y, we.forcing=game
     4{z}   Three-card support: game
            shows z>=3
            when  z is H | z is S
     3N     No fit, a stopper in {y}
            shows stop(y)

   after 1x (2y) | 1x (3y)
     when y is not x
     2N     11-12 total points, balanced, a stopper in {y}
            shows balanced, hcp+length_points>=11, hcp+length_points<=12
            when  stop(y)
     3N     13+ total points, balanced, a stopper in {y}
            shows balanced, hcp+length_points>=13
            when  stop(y)
     P      No suitable bid

   after 1x (X)
     XX     Redouble: 10+ total points  [alert]  [artificial]
            shows hcp+length_points>=10
            when  S<=4 | x is S | hcp>=12, H<=4 | x is H | x is S | hcp>=12
     cheapest(S) 6-9 total points, four or more spades, or 10-11 with five
            shows S>=4, S>H, hcp+length_points>=6, hcp+length_points<=9 | (S>=5, hcp<=11)
            when  x is not S
     cheapest(H) 6-9 total points, four or more hearts, or 10-11 with five
            shows H>=4, H>=S, hcp+length_points>=6, hcp+length_points<=9 | (H>=5, hcp<=11)
            when  x is not H, x is not S
     cheapest(D) 6-9 total points, four or more diamonds
            shows D>=4, S<=3, H<=3, hcp+length_points>=6, hcp+length_points<=9
            when  x is not D, x is not H, x is not S
     2{x}   Raise: 4-9 total points, support for partner's suit
            shows x>=3, hcp+length_points>=4, hcp+length_points<=9
            when  x is H | x is S | x>=5, S<=3 | x is S | x is H, H<=3 | x is H | x is S
     3{x}   Preemptive raise: five-card support for a major, less than 8
            shows x>=5, hcp+length_points<=7
            when  x is H | x is S
     1N     6-9 total points, balanced
            shows balanced, hcp+length_points>=6, hcp+length_points<=9
            when  S<=3 | x is S, H<=3 | x is H, x<=2 | x is C | x is D, !tfr | x is C | x is D
     P      No suitable bid

   after 1x (1y) X (P) | 1x (2y) X (P) | 1x (3y) X (P)
     cheapest(S) Four spades, minimum
            shows S>=4, tp(S)<=15
            when  x is not S, y is not S
     cheapest(H) Four hearts, minimum
            shows H>=4, tp(H)<=15
            when  x is not H, y is not H
     jump(S) Four spades, 16-18
            shows S>=4, tp(S)=16..18
            when  x is not S, y is not S
     jump(H) Four hearts, 16-18
            shows H>=4, tp(H)=16..18
            when  x is not H, y is not H
     cheapest(N) 12-14 balanced with a stopper in {y}
            shows balanced, hcp<=14
            when  stop(y)
     jump(N) 18-19 balanced with a stopper in {y}
            shows balanced, hcp=18..19
            when  nt_jump_to_game, stop(y)
     cheapest(x) Rebids {x}: six or more, minimum
            shows x>=6, hcp<=15
            when  x is H | x is S
     cheapest(x) Rebids {x}: five or more, minimum
            shows x>=5, hcp<=15
            when  x is C | x is D, x>=6
     jump(x) Six cards in {x}, 16-18
            shows x>=6, hcp=16..18
     4S     Game: four spades, 19+
            shows S>=4, tp(S)>=19
            when  x is not S, y is not S
     4H     Game: four hearts, 19+
            shows H>=4, tp(H)>=19
            when  x is not H, y is not H
     cheapest(D) Four diamonds, minimum
            shows D>=4, hcp<=15
            when  x is not D, y is not D, S<=3 | x is S | y is S, H<=3 | x is H | y is H
     cheapest(C) Four clubs, minimum
            shows C>=4, C>=D, hcp<=15
            when  x is not C, y is not C, S<=3 | x is S | y is S, H<=3 | x is H | y is H
     cheapest(S) Three spades, minimum
            shows S>=3, hcp<=15
            when  x is not S, y is not S, partner.S>=4
     cheapest(H) Three hearts, minimum
            shows H>=3, hcp<=15
            when  x is not H, y is not H, partner.H>=4
     cheapest(x) Rebids {x}: five cards, minimum
            shows x>=5, hcp<=15
     3N     Game: 17+ with a stopper in {y}
            shows hcp>=17, stop(y)
            when  lho.last=1{y} | lho.last=2{y}
     cheapest(y) Cue bid: 17+, forcing to game  [alert]  [artificial]
            shows hcp>=17
            when  lho.last=1{y} | lho.last=2{y}
     cheapest(x) Rebids {x}: no better bid

   after 1x (1y) 2y (P) | 1x (2y) 3y (P) | 1x (3y) 4y (P)
     when y is not x
     4{x}   Accepts: game in {x}
            shows tp(x)>=14
            when  x is H | x is S
     3N     Accepts: 14+ with a stopper in {y}
            shows hcp>=14
            when  stop(y), x is C | x is D
     5{x}   Accepts: 16+, no stopper in {y}
            shows hcp>=16
            when  x is C | x is D
     cheapest(x) Minimum: signs off

   after 1x (1y) 2y (P) 3x (P) | 1x (2y) 3y (P) 3x (P) | 1x (2y) 3y (P) 4x (P)
     when x is C | x is D, y is not x
     3N     Game: 13+ with a stopper in {y}
            shows hcp+length_points>=13, stop(y)
     5{x}   Game in the minor: 14+
            shows hcp+length_points>=14
     P      Limit raise only

   after 1x (2y) 3y (P) 4x (P)
     when x is H | x is S, y is not x
     P      Game reached

   after 1x (1y) 2y (P) 2x (P) | 1x (1y) 2y (P) 3x (P) | 1x (2y) 3y (P) 3x (P)
     when x is H | x is S, y is not x
     4{x}   Game: 13+
            shows hcp+length_points>=13
     P      Limit raise only

   after 1x (1y) X (2z) | 1x (2y) X (3z)
     when y is not x
     cheapest(S) Four spades, minimum
            shows S>=4, tp(S)<=15
            when  x is not S, y is not S
     cheapest(H) Four hearts, minimum
            shows H>=4, tp(H)<=15
            when  x is not H, y is not H
     jump(S) Four spades, 16-18
            shows S>=4, tp(S)=16..18
            when  x is not S, y is not S
     jump(H) Four hearts, 16-18
            shows H>=4, tp(H)=16..18
            when  x is not H, y is not H
     cheapest(N) 12-15 balanced with a stopper in {y}
            shows balanced, hcp<=15
            when  stop(y)
     jump(N) 18-19 balanced with a stopper in {y}
            shows balanced, hcp=18..19
            when  nt_jump_to_game, stop(y)
     cheapest(x) Six or more {x}, 13+
            shows x>=6, hcp>=13
     P      No further bid

   after 1x (1y) X (3z) | 1x (1y) X (4z) | 1x (2y) X (4z) | 1x (3y) X (4z)
     when y is not x
     cheapest(S) Four spades, 13+
            shows S>=4, hcp>=13
            when  x is not S, y is not S
     cheapest(H) Four hearts, 13+
            shows H>=4, hcp>=13
            when  x is not H, y is not H
     cheapest(N) 13+ balanced with a stopper in {y}
            shows balanced, hcp>=13
            when  stop(y)
     P      No further bid

   after (any auction)
     when they.bid, !lho.opened, !rho.opened, me.last=P
     P      No further bid
            when  !passes_out_artificial

   after (any auction)
     when they.bid, !lho.opened, !rho.opened, partner.last=P
     P      No further bid
            when  !passes_out_artificial

   after 1x (1y) P (P) X (P) 2z (P) | 1x (1y) P (P) X (P) 3z (P) | 1x (2y) P (P) X (P) 2z (P) | 1x (2y) P (P) X (P) 3z (P) | 1x (3y) P (P) X (P) 3z (P) | 1x (3y) P (P) X (P) 4z (P)
     when y is not x, z is not y
     3N     Game: 18+ with a stopper in {y}
            shows hcp>=18, stop(y)
     P      No game

== balancing: The balancing seat
   file: conventions/competitive/balancing.bid
   needs: base, overcalls
   skills: competitive_bidding/balancing

   after (1x) P (P)
     X      Reopening double: 8+ total points and the unbid suits
            shows hcp+length_points>=8, (S>=3 | x is S, H>=3 | x is H, D>=3 | x is D, C>=3 | x is C) | hcp+length_points>=oc_max+1
     1S     Reopening: five spades, 8-15 total points
            shows S>=5, S>=H, S>=D, S>=C, hcp+length_points>=one_min, hcp+length_points<=15
            when  x is not S
     1H     Reopening: five hearts, 8-15 total points
            shows H>=5, H>S, H>=D, H>=C, hcp+length_points>=one_min, hcp+length_points<=15
            when  x is not H
     1D     Reopening: five diamonds, 8-15 total points
            shows D>=5, D>S, D>H, D>=C, hcp+length_points>=one_min, hcp+length_points<=15
            when  x is not D
     2C     Reopening: five clubs, 10-15 total points
            shows C>=5, C>S, C>H, C>D, hcp+length_points>=two_min-2, hcp+length_points<=15
            when  x is not C
     2D     Reopening: five diamonds, 10-15 total points
            shows D>=5, D>S, D>H, D>=C, hcp+length_points>=two_min-2, hcp+length_points<=15
            when  x is not D, x is not C
     2H     Reopening: five hearts, 10-15 total points
            shows H>=5, H>S, H>=D, H>=C, hcp+length_points>=two_min-2, hcp+length_points<=15
            when  x is not H, x is not D, x is not C
     1N     Balancing notrump: {nt_min}-{nt_max} balanced with a stopper in {x}
            shows balanced, hcp>=nt_min, hcp<=nt_max
            when  stop(x)
     2N     19-21 balanced with a stopper in {x}
            shows balanced, hcp=19..21
            when  stop(x)
     P      Nothing to reopen with

== cappelletti: Cappelletti and Modified Cappelletti over their 1NT
   file: conventions/competitive/cappelletti.bid
   needs: vs-1nt
   skills: competitive_bidding/cappelletti, competitive_bidding/modified_cappelletti, competitive_bidding/defense_vs_1nt

   after (1N) | (1N) P (P)
     when def is cappelletti | def is modified_cappelletti
     X      Penalty: 15+ HCP
            shows hcp>=15
     2D     Cappelletti: both majors, 5-4 or longer  [alert]
            shows H>=4, S>=4, H+S>=9, hcp+length_points>=10, hcp<=17
            when  system is not brill
     2N     Cappelletti: both minors, 5-5 or longer  [alert]
            shows C>=5, D>=5, hcp+length_points>=8, hcp<=17
            when  system is not brill

   after (1N) | (1N) P (P)
     when def is cappelletti | def is modified_cappelletti, system is brill
     2D     Cappelletti: both majors, 5-5 or longer, 10+ HCP  [alert]
            shows H>=5, S>=5, hcp>=10, hcp<=17
     2N     Cappelletti: both minors, 5-5 or longer, 10+ HCP  [alert]
            shows C>=5, D>=5, hcp>=10, hcp<=17

   after (1N) | (1N) P (P)
     when def is cappelletti
     2C     Cappelletti: one long suit, six or more  [alert]
            shows longest>=6, second_longest<=4, hcp+length_points>=12, hcp<=17 | (system is brill, hcp<=18), hcp>=10 | system is not brill
     2H     Cappelletti: five hearts and a four-card minor  [alert]
            shows H>=5, S<=3, (C>=4, quality(C)>=fair) | (D>=4, quality(D)>=fair), hcp+length_points>=10, hcp<=17, hcp>=10 | system is not brill
     2S     Cappelletti: five spades and a four-card minor  [alert]
            shows S>=5, H<=3, (C>=4, quality(C)>=fair) | (D>=4, quality(D)>=fair), hcp+length_points>=10, hcp<=17, hcp>=10 | system is not brill

   after (any auction)
     when asked capp_one, rho.last=P | rho.last=X
     2D     Relay: bid your suit  [alert]
     P      Long clubs: to play
            shows C>=6
     2H     Six or more hearts: to play
            shows H>=6, hcp<=12
     2S     Six or more spades: to play
            shows S>=6, hcp<=12

   after (any auction)
     when asked capp_relay, rho.last=P | rho.last=X
     P      My suit is diamonds
            shows D>=6
     2H     My suit is hearts
            shows H>=6
     2S     My suit is spades
            shows S>=6
     3C     My suit is clubs
            shows C>=6

   after (1N) | (1N) P (P)
     when def is modified_cappelletti
     2C     Modified Cappelletti: a long minor, or a major and a minor  [alert]
            shows (C>=6 | D>=6, second_longest<=4, hcp+length_points>=12) | ((H>=5, S<=3) | (S>=5, H<=3), C>=4 | D>=4, hcp+length_points>=10), hcp<=17
     2H     Modified Cappelletti: six or more hearts  [alert]
            shows H>=6, second_longest<=4, hcp+length_points>=12, hcp<=17
     2S     Modified Cappelletti: six or more spades  [alert]
            shows S>=6, second_longest<=4, hcp+length_points>=12, hcp<=17

   after (any auction)
     when asked mcapp_one, rho.last=P | rho.last=X
     2D     Relay: show your hand  [alert]

   after (any auction)
     when asked mcapp_relay, rho.last=P | rho.last=X
     P      Long diamonds
            shows D>=6
     2H     Hearts and a minor
            shows H>=5, C>=4 | D>=4
     2S     Spades and a minor
            shows S>=5, C>=4 | D>=4
     3C     Long clubs
            shows C>=6

== dont: DONT over their 1NT
   file: conventions/competitive/dont.bid
   needs: vs-1nt
   skills: competitive_bidding/dont, competitive_bidding/defense_vs_1nt
   define dont_strength = hcp<=15 | (hcp<=19, longest+second_longest>=10 | longest>=7)

   after (1N) | (1N) P (P)
     when def is dont | (dont_play, def is other)
     X      DONT: one long suit, not spades  [alert]
            shows C>=6 | D>=6 | H>=6, second_longest<=3, hcp+length_points>=10, dont_strength
     2C     DONT: clubs and a higher suit  [alert]
            shows (C>=5, D>=4 | H>=4 | S>=4) | (C>=4, D>=5 | H>=5 | S>=5), hcp+length_points>=10, dont_strength
     2D     DONT: diamonds and a major  [alert]
            shows (D>=5, H>=4 | S>=4) | (D>=4, H>=5 | S>=5), hcp+length_points>=10, dont_strength
     2H     DONT: hearts and spades  [alert]
            shows H>=4, S>=4, H+S>=9, hcp+length_points>=10, dont_strength
     2S     DONT: six or more spades
            shows S>=6, second_longest<=4, hcp+length_points>=10, dont_strength

   after (any auction)
     when asked dont_one, rho.last=P | rho.last=X | rho.last=XX
     2C     Relay: bid your suit  [alert]
     2D     Six or more diamonds: to play
            shows D>=6
     2H     Six or more hearts: to play
            shows H>=6
     2S     Six or more spades: to play
            shows S>=6

   after (any auction)
     when asked dont_relay, rho.last=P | rho.last=X
     P      My suit is clubs
            shows C>=6
     2D     My suit is diamonds
            shows D>=6
     2H     My suit is hearts
            shows H>=6

== fit-showing-jumps: Fit-showing jumps
   file: conventions/competitive/fit-showing-jumps.bid
   card: competitive.fit_showing_jumps.play
   needs: base, overcalls
   skills: competitive_bidding/fit_showing_jumps

   after 1x (P) | 1x (X) | 1x (1N)
     when passed_hand
     jump(S) Fit-showing jump: 4+ {x}, 5+ ♠ with an honour, 10-12  [alert]
            shows x>=4, S>=5, quality(S)>=fair, hcp+length_points=10..12, hcp<=11
            when  x is not S
     jump(H) Fit-showing jump: 4+ {x}, 5+ ♥ with an honour, 10-12  [alert]
            shows x>=4, H>=5, quality(H)>=fair, hcp+length_points=10..12, hcp<=11
            when  x is not H
     jump(D) Fit-showing jump: 4+ {x}, 5+ ♦ with an honour, 10-12  [alert]
            shows x>=4, D>=5, quality(D)>=fair, hcp+length_points=10..12, hcp<=11
            when  x is not D
     jump(C) Fit-showing jump: 4+ {x}, 5+ ♣ with an honour, 10-12  [alert]
            shows x>=4, C>=5, quality(C)>=fair, hcp+length_points=10..12, hcp<=11
            when  x is not C

   after 1x (1y) | 1x (2y)
     when passed_hand, y is not x
     jump(S) Fit-showing jump: 4+ {x}, 5+ ♠ with an honour, 10-12  [alert]
            shows x>=4, S>=5, quality(S)>=fair, hcp+length_points=10..12, hcp<=11
            when  x is not S, y is not S
     jump(H) Fit-showing jump: 4+ {x}, 5+ ♥ with an honour, 10-12  [alert]
            shows x>=4, H>=5, quality(H)>=fair, hcp+length_points=10..12, hcp<=11
            when  x is not H, y is not H
     jump(D) Fit-showing jump: 4+ {x}, 5+ ♦ with an honour, 10-12  [alert]
            shows x>=4, D>=5, quality(D)>=fair, hcp+length_points=10..12, hcp<=11
            when  x is not D, y is not D
     jump(C) Fit-showing jump: 4+ {x}, 5+ ♣ with an honour, 10-12  [alert]
            shows x>=4, C>=5, quality(C)>=fair, hcp+length_points=10..12, hcp<=11
            when  x is not C, y is not C

   after 1x (X)
     when !passed_hand
     jump(S) Fit-showing jump: 4+ {x}, 5+ ♠ with an honour, 10+  [alert]
            shows x>=4, S>=5, quality(S)>=fair, hcp+length_points>=10
            when  x is not S
     jump(H) Fit-showing jump: 4+ {x}, 5+ ♥ with an honour, 10+  [alert]
            shows x>=4, H>=5, quality(H)>=fair, hcp+length_points>=10
            when  x is not H
     jump(D) Fit-showing jump: 4+ {x}, 5+ ♦ with an honour, 10+  [alert]
            shows x>=4, D>=5, quality(D)>=fair, hcp+length_points>=10
            when  x is not D
     jump(C) Fit-showing jump: 4+ {x}, 5+ ♣ with an honour, 10+  [alert]
            shows x>=4, C>=5, quality(C)>=fair, hcp+length_points>=10
            when  x is not C

   after (1x) 1y (P) | (1x) 1y (X) | (1x) P (P) 1y (P)
     jump(S) Fit-showing jump: 4+ {y}, 5+ ♠ with an honour, 10+  [alert]
            shows y>=4, S>=5, quality(S)>=fair, hcp+length_points>=10
            when  x is not S, y is not S, !passed_hand | hcp<=11
     jump(H) Fit-showing jump: 4+ {y}, 5+ ♥ with an honour, 10+  [alert]
            shows y>=4, H>=5, quality(H)>=fair, hcp+length_points>=10
            when  x is not H, y is not H, !passed_hand | hcp<=11
     jump(D) Fit-showing jump: 4+ {y}, 5+ ♦ with an honour, 10+  [alert]
            shows y>=4, D>=5, quality(D)>=fair, hcp+length_points>=10
            when  x is not D, y is not D, !passed_hand | hcp<=11
     jump(C) Fit-showing jump: 4+ {y}, 5+ ♣ with an honour, 10+  [alert]
            shows y>=4, C>=5, quality(C)>=fair, hcp+length_points>=10
            when  x is not C, y is not C, !passed_hand | hcp<=11

   after 1x (P) 2z (P) | 1x (P) 3z (P) | 1x (X) 2z (P) | 1x (X) 3z (P) | 1x (1y) 2z (P) | 1x (1y) 3z (P) | 1x (2y) 2z (P) | 1x (2y) 3z (P) | (1y) 1x (P) 2z (P) | (1y) 1x (P) 3z (P) | (1y) 1x (X) 2z (P) | (1y) 1x (X) 3z (P) | (1y) P (P) 1x (P) 2z (P) | (1y) P (P) 1x (P) 3z (P)
     when asked fit_jump(t), z is not t
     4{t}   Game: 14+ total points, or 12+ with a fit in {z}
            shows tp(t)>=14 | (hcp>=12, z>=3 | quality(z)>=fair, z>=2)
            when  t is H | t is S
     4{z}   Game in {z}: three or more, 14+ total points
            shows z>=3, tp(z)>=14
            when  t is C | t is D, z is H | z is S
     3N     Game in notrump: 16+ with {z} covered, or 18+
            shows (hcp>=16, z>=2, balanced) | hcp>=18
            when  t is C | t is D
     5{t}   Game in {t}: 16+, a fit in {z}
            shows hcp>=16, z>=3 | quality(z)>=fair, !balanced
            when  t is C | t is D
     cheapest(t) No game: sign off in {t}

   after 1x (P) 2z (P) 3x (P) | 1x (P) 3z (P) 3x (P) | 1x (P) 3z (P) 4x (P) | 1x (X) 2z (P) 3x (P) | 1x (X) 3z (P) 3x (P) | 1x (X) 3z (P) 4x (P) | 1x (1y) 2z (P) 3x (P) | 1x (1y) 3z (P) 3x (P) | 1x (1y) 3z (P) 4x (P) | 1x (2y) 3z (P) 3x (P) | 1x (2y) 3z (P) 4x (P) | (1y) 1x (P) 2z (P) 3x (P) | (1y) 1x (P) 3z (P) 3x (P) | (1y) 1x (P) 3z (P) 4x (P)
     when answered fit_jump(x), z is not x
     4{x}   Game: 13+
            shows hcp+length_points>=13
            when  x is H | x is S, !passed_hand
     P      No further bid

== ghestem: Ghestem two-suited overcalls
   file: conventions/competitive/ghestem.bid
   card: competitive.ghestem.play
   needs: base, two-suited-overcalls
   skills: competitive_bidding/ghestem

   after (1C)
     2C     Ghestem: five or more diamonds and spades  [alert]
            shows D>=5, S>=5, hcp+length_points>=9, hcp<=17
            when  !vul
     2C     Ghestem: five or more diamonds and spades  [alert]
            shows D>=5, S>=5, hcp+length_points>=11, hcp<=17
            when  vul
     3C     Ghestem: five or more hearts and spades  [alert]
            shows H>=5, S>=5, hcp+length_points>=9, hcp<=17
            when  !vul
     3C     Ghestem: five or more hearts and spades  [alert]
            shows H>=5, S>=5, hcp+length_points>=11, hcp<=17
            when  vul

   after (1D)
     2D     Ghestem: five or more clubs and spades  [alert]
            shows C>=5, S>=5, hcp+length_points>=9, hcp<=17
            when  !vul
     2D     Ghestem: five or more clubs and spades  [alert]
            shows C>=5, S>=5, hcp+length_points>=11, hcp<=17
            when  vul
     3C     Ghestem: five or more hearts and spades  [alert]
            shows H>=5, S>=5, hcp+length_points>=9, hcp<=17
            when  !vul
     3C     Ghestem: five or more hearts and spades  [alert]
            shows H>=5, S>=5, hcp+length_points>=11, hcp<=17
            when  vul

   after (1H)
     2H     Ghestem: five or more clubs and spades  [alert]
            shows C>=5, S>=5, hcp+length_points>=9, hcp<=17
            when  !vul
     2H     Ghestem: five or more clubs and spades  [alert]
            shows C>=5, S>=5, hcp+length_points>=11, hcp<=17
            when  vul
     3C     Ghestem: five or more diamonds and spades  [alert]
            shows D>=5, S>=5, hcp+length_points>=9, hcp<=17
            when  !vul
     3C     Ghestem: five or more diamonds and spades  [alert]
            shows D>=5, S>=5, hcp+length_points>=11, hcp<=17
            when  vul

   after (1S)
     2S     Ghestem: five or more clubs and hearts  [alert]
            shows C>=5, H>=5, hcp+length_points>=9, hcp<=17
            when  !vul
     2S     Ghestem: five or more clubs and hearts  [alert]
            shows C>=5, H>=5, hcp+length_points>=11, hcp<=17
            when  vul
     3C     Ghestem: five or more diamonds and hearts  [alert]
            shows D>=5, H>=5, hcp+length_points>=9, hcp<=17
            when  !vul
     3C     Ghestem: five or more diamonds and hearts  [alert]
            shows D>=5, H>=5, hcp+length_points>=11, hcp<=17
            when  vul

   after (1m) 2m (P) | (1m) 2m (X) | (1x) 3C (P) | (1x) 3C (X)
     4S     Game: three or more spades, 12+
            shows S>=3, S>=H, hcp+length_points>=12
            when  partner.S>=5
     4H     Game: three or more hearts, 12+
            shows H>=3, hcp+length_points>=12
            when  partner.H>=5
     jump(S) Invitational: four or more spades, 10-11
            shows S>=4, hcp+length_points>=10, hcp+length_points<=11
            when  partner.S>=5, cheapest_rank(S)<=13
     jump(H) Invitational: four or more hearts, 10-11
            shows H>=4, hcp+length_points>=10, hcp+length_points<=11
            when  partner.H>=5, cheapest_rank(H)<=13
     cheapest(S) Preference: spades
            when  partner.S>=5
     cheapest(H) Preference: hearts
            when  partner.H>=5
     cheapest(D) Preference: diamonds
            when  partner.D>=5
     cheapest(C) Preference: clubs
            when  partner.C>=5

== lead-directing-doubles: Lead-directing doubles of artificial bids
   file: conventions/competitive/lead-directing-doubles.bid
   card: competitive.lead_directing_double.play
   needs: base
   skills: competitive_bidding/lead_directing_doubles
   define ldd_suit(x) = x>=5, top5(x)>=3 | (x>=6, quality(x)>=good)

   after (1N) P (2x) | (1N) P (3x) | (2N) P (3x) | (4N) P (5x)
     when !rho.named(x)
     X      Lead-directing: a good {x} suit, lead it  [alert]
            shows ldd_suit(x)

   after (2C) P (2D)
     when !rho.named(D)
     X      Lead-directing: a good diamond suit, lead it  [alert]
            shows ldd_suit(D)

== maximal-doubles: Maximal doubles
   file: conventions/competitive/maximal-doubles.bid
   card: doubles.maximal
   needs: base, overcalls
   skills: competitive_bidding/maximal_doubles

   after 1M (*) 2M (3x) | (1y) 1M (*) 2M (3x)
     when (M is H, x is D) | (M is S, x is H)
     X      Maximal double: a game try in {M}  [alert]  [artificial]
            shows tp(M)=17..18
     3{M}   Competitive: no game interest
            shows M>=6 | (M>=5, !balanced), tp(M)<=16
     4{M}   Game: 19+
            shows tp(M)>=19
     P      No further bid

   after (any auction)
     when asked maximal(t)
     4{t}   Accepts the game try: a maximum raise
            shows tp(t)>=9
     3{t}   Declines: a minimum raise

   after 1M (*) 2M (3x) 3M (P) | (1y) 1M (*) 2M (3x) 3M (P)
     when (M is H, x is D) | (M is S, x is H)
     P      No further bid

== meckwell: Meckwell over their 1NT
   file: conventions/competitive/meckwell.bid
   needs: vs-1nt
   skills: competitive_bidding/meckwell, competitive_bidding/defense_vs_1nt

   after (1N) | (1N) P (P)
     when def is meckwell
     X      Meckwell: a long minor, or both majors  [alert]
            shows (C>=6 | D>=6, second_longest<=3, hcp+length_points>=12) | (H>=4, S>=4, H+S>=9, hcp+length_points>=10), hcp<=17
     2C     Meckwell: clubs and a major  [alert]
            shows (C>=5, H>=4 | S>=4) | (C>=4, H>=5 | S>=5), hcp+length_points>=10, hcp<=17
     2D     Meckwell: diamonds and a major  [alert]
            shows (D>=5, H>=4 | S>=4) | (D>=4, H>=5 | S>=5), hcp+length_points>=10, hcp<=17
     2H     Natural: six or more hearts, or a good five
            shows H>=6 | (H>=5, quality(H)>=good, C<=3, D<=3), S<=3, hcp+length_points>=11, hcp<=17
     2S     Natural: six or more spades, or a good five
            shows S>=6 | (S>=5, quality(S)>=good, C<=3, D<=3), H<=3, hcp+length_points>=11, hcp<=17
     2N     Meckwell: both minors, 5-5 or longer  [alert]
            shows C>=5, D>=5, hcp+length_points>=8, hcp<=17

   after (any auction)
     when asked meck_one, rho.last=P | rho.last=X | rho.last=XX
     2C     Relay: bid your suit  [alert]

   after (any auction)
     when asked meck_relay, rho.last=P | rho.last=X
     P      My suit is clubs
            shows C>=6
     2D     My suit is diamonds
            shows D>=6
     2H     Both majors  [alert]
            shows H>=4, S>=4

== multi-landy: Landy and Multi-Landy over their 1NT
   file: conventions/competitive/multi-landy.bid
   needs: vs-1nt
   skills: competitive_bidding/multi_landy, competitive_bidding/landy, competitive_bidding/defense_vs_1nt

   after (1N) | (1N) P (P)
     when def is multi_landy | def is landy
     2C     Landy: both majors, 5-4 or longer  [alert]
            shows H>=4, S>=4, H+S>=9, hcp+length_points>=10, hcp<=17

   after (1N) | (1N) P (P)
     when def is multi_landy
     X      Multi-Landy: a four-card major and a longer minor  [alert]
            shows H=4 | S=4, C>=5 | D>=5, hcp+length_points>=12, hcp<=17
     2D     Multi-Landy: six or more in one major  [alert]
            shows H>=6 | S>=6, second_longest<=4, hcp+length_points>=11, hcp<=17
     2H     Multi-Landy: five hearts and a four-card minor  [alert]
            shows H>=5, S<=3, (C>=4, quality(C)>=fair) | (D>=4, quality(D)>=fair), hcp+length_points>=10, hcp<=17
     2S     Multi-Landy: five spades and a four-card minor  [alert]
            shows S>=5, H<=3, (C>=4, quality(C)>=fair) | (D>=4, quality(D)>=fair), hcp+length_points>=10, hcp<=17
     2N     Multi-Landy: both minors, 5-5 or longer  [alert]
            shows C>=5, D>=5, hcp+length_points>=8, hcp<=17

   after (any auction)
     when asked ml_x, rho.last=P | rho.last=X | rho.last=XX
     2C     Pass or correct: bid your minor  [alert]

   after (any auction)
     when asked ml_minor, rho.last=P | rho.last=X
     P      My minor is clubs
            shows C>=5
     2D     My minor is diamonds
            shows D>=5

   after (any auction)
     when asked ml_multi, rho.last=P | rho.last=X
     2H     Pass or correct: bid your major  [alert]

   after (any auction)
     when asked ml_major, rho.last=P | rho.last=X
     P      My major is hearts
            shows H>=6
     2S     My major is spades
            shows S>=6

== overcalls: Suit and notrump overcalls
   file: conventions/competitive/overcalls.bid
   needs: base
   skills: competitive_bidding/overcalls, partnership_bidding/overcalls

   after (1x)
     1S     Overcall: five spades, {one_min}-{one_max} total points
            shows S>=5, S>=H, S>=D, S>=C, hcp+length_points>=one_min, hcp<=one_max
            when  x is not S, quality(S)>=good | top5(S)>=3 | hcp+length_points>=12
     1H     Overcall: five hearts, {one_min}-{one_max} total points
            shows H>=5, H>S, H>=D, H>=C, hcp+length_points>=one_min, hcp<=one_max
            when  x is not H, quality(H)>=good | top5(H)>=3 | hcp+length_points>=12
     1D     Overcall: five diamonds, {one_min}-{one_max} total points
            shows D>=5, D>S, D>H, D>=C, hcp+length_points>=one_min, hcp<=one_max
            when  x is not D, quality(D)>=good | top5(D)>=3 | hcp+length_points>=12
     2C     Overcall: five clubs, {two_min}-{two_max} total points
            shows C>=5, C>S, C>H, C>D, hcp>=two_min | (C>=6, hcp>=two_min-1), hcp+length_points<=two_max | hcp<=one_max
            when  x is not C, C>=6 | quality(C)>=good | top5(C)>=4
     2D     Overcall: five diamonds, {two_min}-{two_max} total points
            shows D>=5, D>S, D>H, D>=C, hcp>=two_min | (D>=6, hcp>=two_min-1), hcp+length_points<=two_max | hcp<=one_max
            when  x is not D, x is not C, D>=6 | quality(D)>=good | top5(D)>=4
     2H     Overcall: five hearts, {two_min}-{two_max} total points
            shows H>=5, H>S, H>=D, H>=C, hcp>=two_min | (H>=6, hcp>=two_min-1), hcp+length_points<=two_max | hcp<=one_max
            when  x is not H, x is not D, x is not C, H>=6 | quality(H)>=good | top5(H)>=4
     1N     {nt_min}-{nt_max} balanced with a stopper in {x}
            shows balanced, hcp>=nt_min, hcp<=nt_max, S<=4, H<=4
            when  stop(x), !raptor, system is not brill

   after (1x)
     when system is brill
     1N     {nt_min}-{nt_max} balanced or semi-balanced with a stopper in {x}
            shows balanced | semibalanced, C=2..5, D=2..5, H=2..5, S=2..5, hcp>=nt_min, hcp<=nt_max
            when  stop(x), !raptor

   after (1x) 1N (2x)
     2S     To play: five or more spades
            shows S>=5, hcp<=8
            when  x is H
     3C     To play: six or more clubs
            shows C>=6, hcp<=8, H<=3 | x is H, S<=3 | x is S
     3D     To play: six or more diamonds
            shows D>=6, D>C, hcp<=8, H<=3 | x is H, S<=3 | x is S
     3N     Game: 9+, {x} held
            shows hcp>=9, stop(x)
     P      Not enough to advance
            shows hcp>=0

   after (1N)
     when (nt_def is other, !dont_play) | nt_def is landy
     2S     Natural: five spades, 12+ total points
            shows S>=5, S>=H, S>=D, S>=C, hcp+length_points>=12, hcp<=17
     2H     Natural: five hearts, 12+ total points
            shows H>=5, H>S, H>=D, H>=C, hcp+length_points>=12, hcp<=17
     2D     Natural: five diamonds, 12+ total points
            shows D>=5, D>S, D>H, D>=C, hcp+length_points>=12, hcp<=17

   after (1N)
     when nt_def is other, !dont_play
     2C     Natural: five clubs, 12+ total points
            shows C>=5, C>S, C>H, C>D, hcp+length_points>=12, hcp<=17
     3S     Preemptive: seven spades, 4-10
            shows S>=7, hcp=4..10
     3H     Preemptive: seven hearts, 4-10
            shows H>=7, hcp=4..10
     3D     Preemptive: seven diamonds, 4-10
            shows D>=7, hcp=4..10
     3C     Preemptive: seven clubs, 4-10
            shows C>=7, hcp=4..10

   after (1x)
     when jump is weak
     2D     Weak jump overcall: six diamonds, 4-10
            shows D=6, hcp=4..10, H<=3, S<=3
            when  x is not D, x is not H, x is not S, !vul | quality(D)>=good | top5(D)>=3
     2H     Weak jump overcall: six hearts, 4-10
            shows H=6, hcp=4..10, S<=3
            when  x is not H, x is not S, !vul | quality(H)>=good | top5(H)>=3
     2S     Weak jump overcall: six spades, 4-10
            shows S=6, hcp=4..10
            when  x is not S, !vul | quality(S)>=good | top5(S)>=3
     3C     Jump overcall: seven clubs, 4-10
            shows C=7, hcp=4..10, H<=3, S<=3
            when  x is not C, !vul | quality(C)>=good | top5(C)>=3
     3D     Jump overcall: seven diamonds, 4-10
            shows D=7, hcp=4..10, H<=3, S<=3
            when  x is not D, !vul | quality(D)>=good | top5(D)>=3
     3H     Jump overcall: seven hearts, 4-10
            shows H=7, hcp=4..10, S<=3
            when  x is not H, !vul | quality(H)>=good | top5(H)>=3
     3S     Jump overcall: seven spades, 4-10
            shows S=7, hcp=4..10
            when  x is not S, !vul | quality(S)>=good | top5(S)>=3

   after (1x) P (1y)
     when y is not x
     1S     Overcall: five spades, {one_min}-18 total points
            shows S>=5, S>=H | x is H | y is H, S>=D | x is D | y is D, S>=C | x is C | y is C, hcp+length_points>=one_min, hcp<=18
            when  x is not S, y is not S, quality(S)>=good | top5(S)>=3 | hcp+length_points>=12
     1H     Overcall: five hearts, {one_min}-18 total points
            shows H>=5, H>S | x is S | y is S, H>=D | x is D | y is D, H>=C | x is C | y is C, hcp+length_points>=one_min, hcp<=18
            when  x is not H, y is not H, y is not S, quality(H)>=good | top5(H)>=3 | hcp+length_points>=12
     2C     Overcall: five clubs, {two_min}-18 total points
            shows C>=5, C>S | x is S | y is S, C>H | x is H | y is H, C>D | x is D | y is D, hcp>=two_min | (C>=6, hcp>=two_min-1), hcp<=18
            when  x is not C, y is not C, C>=6 | quality(C)>=good | top5(C)>=4
     2D     Overcall: five diamonds, {two_min}-18 total points
            shows D>=5, D>S | x is S | y is S, D>H | x is H | y is H, D>=C | x is C | y is C, hcp>=two_min | (D>=6, hcp>=two_min-1), hcp<=18
            when  x is not D, y is not D, D>=6 | quality(D)>=good | top5(D)>=4
     2H     Overcall: five hearts, {two_min}-18 total points
            shows H>=5, H>S | x is S | y is S, H>=D | x is D | y is D, H>=C | x is C | y is C, hcp>=two_min | (H>=6, hcp>=two_min-1), hcp<=18
            when  x is not H, y is S, H>=6 | quality(H)>=good | top5(H)>=4
     1N     {nt_min}-{nt_max} balanced, both their suits stopped
            shows balanced, hcp>=nt_min, hcp<=nt_max, S<=4, H<=4
            when  stop(x), stop(y), !passed_hand, !sandwich
     X      Takeout: hearts and spades, 12+
            shows H>=3, S>=3, H+S>=8 | hcp>=15, hcp>=12
            when  x is C, y is D
     X      Takeout: diamonds and spades, 12+
            shows D>=3, S>=3, D+S>=8 | hcp>=15, hcp>=12
            when  x is C, y is H
     X      Takeout: diamonds and hearts, 12+
            shows D>=3, H>=3, D+H>=8 | hcp>=15, hcp>=12
            when  x is C, y is S
     X      Takeout: clubs and spades, 12+
            shows C>=3, S>=3, C+S>=8 | hcp>=15, hcp>=12
            when  x is D, y is H
     X      Takeout: clubs and hearts, 12+
            shows C>=3, H>=3, C+H>=8 | hcp>=15, hcp>=12
            when  x is D, y is S
     X      Takeout: both minors, 12+
            shows C>=3, D>=3, C+D>=8 | hcp>=15, hcp>=12
            when  x is H, y is S
     X      Takeout: hearts and spades, 15+
            shows H>=4, S>=4, hcp>=15, !balanced
            when  x is C, y is D
     X      Takeout: diamonds and spades, 15+
            shows D>=4, S>=4, hcp>=15, !balanced
            when  x is C, y is H
     X      Takeout: diamonds and hearts, 15+
            shows D>=4, H>=4, hcp>=15, !balanced
            when  x is C, y is S
     X      Takeout: clubs and spades, 15+
            shows C>=4, S>=4, hcp>=15, !balanced
            when  x is D, y is H
     X      Takeout: clubs and hearts, 15+
            shows C>=4, H>=4, hcp>=15, !balanced
            when  x is D, y is S
     X      Takeout: both minors, 15+
            shows C>=4, D>=4, hcp>=15, !balanced
            when  x is H, y is S
     P      No overcall

   after (1x) P (1y)
     when y is not x, jump is weak
     2S     Weak jump overcall: six spades, 4-10
            shows S=6, hcp=4..10
            when  x is not S, y is not S, !vul | quality(S)>=good | top5(S)>=3
     2H     Weak jump overcall: six hearts, 4-10
            shows H=6, hcp=4..10, S<=3
            when  x is not H, y is not H, y is not S, !vul | quality(H)>=good | top5(H)>=3
     3C     Jump overcall: seven clubs, 4-10
            shows C=7, hcp=4..10, H<=3, S<=3
            when  x is not C, y is not C, !vul | quality(C)>=good | top5(C)>=3
     3D     Jump overcall: seven diamonds, 4-10
            shows D=7, hcp=4..10, H<=3, S<=3
            when  x is not D, y is not D, !vul | quality(D)>=good | top5(D)>=3
     3H     Jump overcall: seven hearts, 4-10
            shows H=7, hcp=4..10, S<=3
            when  x is not H, y is not H, !vul | quality(H)>=good | top5(H)>=3
     3S     Jump overcall: seven spades, 4-10
            shows S=7, hcp=4..10
            when  x is not S, y is not S, !vul | quality(S)>=good | top5(S)>=3

   after (1x) P (2x)
     2S     Overcall over their raise: five or more spades
            shows S>=5, S>=H | x is H, S>=D | x is D, S>=C | x is C, hcp+length_points>=10, hcp<=one_max
            when  x is not S, S>=6 | quality(S)>=good | top5(S)>=3
     2H     Overcall over their raise: five or more hearts
            shows H>=5, H>S, H>=D | x is D, H>=C | x is C, hcp+length_points>=10, hcp<=one_max
            when  x is C | x is D, H>=6 | quality(H)>=good | top5(H)>=3
     2D     Overcall over their raise: five or more diamonds
            shows D>=5, D>S, D>H, D>=C | x is C, hcp+length_points>=10, hcp<=one_max
            when  x is C, D>=6 | quality(D)>=good | top5(D)>=3
     3H     Overcall over their raise: five or more hearts
            shows H>=5, H>=D, H>=C, (H>=6, hcp>=two_min-2) | (hcp>=14, !balanced), hcp<=one_max
            when  x is S, H>=6 | quality(H)>=good | top5(H)>=4
     3D     Overcall over their raise: five or more diamonds
            shows D>=5, D>S | x is S, D>H | x is H, D>=C, (D>=6, hcp>=two_min-2) | (hcp>=14, !balanced), hcp<=one_max
            when  x is H | x is S, D>=6 | quality(D)>=good | top5(D)>=4
     3C     Overcall over their raise: five or more clubs
            shows C>=5, C>S | x is S, C>H | x is H, C>D | x is D, (C>=6, hcp>=two_min-2) | (hcp>=14, !balanced), hcp<=one_max
            when  x is not C, C>=6 | quality(C)>=good | top5(C)>=4
     P      No overcall over their raise

   after (1x) P (2x)
     when jump is weak
     3S     Weak jump over their raise: six spades, 4-10
            shows S=6, hcp=4..10
            when  x is not S, !vul | quality(S)>=good | top5(S)>=3
     3H     Weak jump over their raise: six hearts, 4-10
            shows H=6, hcp=4..10, S<=3
            when  x is C | x is D, !vul | quality(H)>=good | top5(H)>=3
     3D     Weak jump over their raise: six diamonds, 4-10
            shows D=6, hcp=4..10, H<=3, S<=3
            when  x is C, !vul | quality(D)>=good | top5(D)>=3

   after (1x) P (3x)
     3S     Overcall over their jump raise: five or more spades
            shows S>=5, S>=H | x is H, S>=D | x is D, S>=C | x is C, (S>=6, hcp>=two_min-2) | (hcp>=14, !balanced), hcp<=one_max
            when  x is not S, S>=6 | quality(S)>=good | top5(S)>=4
     3H     Overcall over their jump raise: five or more hearts
            shows H>=5, H>S, H>=D | x is D, H>=C | x is C, (H>=6, hcp>=two_min-2) | (hcp>=14, !balanced), hcp<=one_max
            when  x is C | x is D, H>=6 | quality(H)>=good | top5(H)>=4
     3D     Overcall over their jump raise: five or more diamonds
            shows D>=5, D>S, D>H, D>=C | x is C, (D>=6, hcp>=two_min-2) | (hcp>=14, !balanced), hcp<=one_max
            when  x is C, D>=6 | quality(D)>=good | top5(D)>=4
     P      No overcall over their jump raise

   after (1x)
     P      No overcall
            shows hcp<=one_max

== penalty-doubles: Penalty doubles: they are too high
   file: conventions/competitive/penalty-doubles.bid
   needs: base
   define direct = !rho.last=P, !rho.last=X, !rho.last=XX
   define passed_round = rho.last=P, partner.last=P, !lho.last=P, !lho.last=X, !lho.last=XX
   define natural_theirs(x) = they.strain is x, they.fit(x).min>=4, partner.x.min<=2, shown.x.min<=2
   define settled(x) = passed_round | they.fit(x).min>=7 | they.game_reached
   define good_trumps(x) = x>=4, quality(x)>=good | top5(x)>=3
   define big_hand_vs_game = they.game_reached, hcp>=17
   define pen_suit(x) = (good_trumps(x), we.hcp.min>=17) | (x>=4, we.hcp.min>=20) | (x>=3, we.hcp.min>=21) | we.hcp.min>=22 | (big_hand_vs_game, x>=2 | longest<=5 | me.last=X)
   define responder_first = partner.opened, me.bids=0, !passed_hand, !me.last=X, !me.last=XX
   define partner_nt = partner.opened, partner.bids=1, partner.hcp.min>=12, partner.hcp.max-partner.hcp.min<=3
   define pen_spot(x) = natural_theirs(x), settled(x), !partner_nt
   define our_game_bid = me.last=3N | me.last=4H | me.last=4S | me.last=5C | me.last=5D | me.last=5H | me.last=5S | partner.last=3N | partner.last=4H | partner.last=4S | partner.last=5C | partner.last=5D | partner.last=5H | partner.last=5S
   define over_our_game(x) = x>=2, hcp>=12 | we.hcp.min>=20
   define we_redoubled = me.last=XX, partner.opened, me.bids=0, partner.hcp.min>=10, direct
   define they_ran = we_redoubled | asked nt_penalty | asked penalty
   define ran_to(x) = !asked penalty | (direct, !lho.named(x)) | (passed_round, !rho.named(x))
   define ran_into(x) = x>=4
   define partner_preempted = partner.opened, partner.bids=1, partner.hcp.max<=11
   define vs_overcall_of_preempt(x) = (x>=2, hcp>=15) | (x>=4, hcp>=12) | (x>=3, hcp>=12, quality(x)>=good | top5(x)>=3) | (x>=5, hcp>=9)
   define one_level_pen(x) = (x>=3, we.hcp.min>=19) | (x>=2, we.hcp.min>=22)

   after (any auction)
     when they.bid, direct | passed_round, !asked, they.level>=2, !responder_first
     X      Penalty double of their spades
            shows pen_suit(S)
            when  pen_spot(S)
     X      Penalty double of their hearts
            shows pen_suit(H)
            when  pen_spot(H)
     X      Penalty double of their diamonds
            shows pen_suit(D)
            when  pen_spot(D)
     X      Penalty double of their clubs
            shows pen_suit(C)
            when  pen_spot(C)

   after (any auction)
     when they.bid, passed_round | (direct, they.game_reached), !asked, !responder_first, they.strain is N, lho.bids+rho.bids>=2
     X      Penalty double of their notrump
            shows we.hcp.min>=21 | big_hand_vs_game

   after (any auction)
     when they.bid, direct | passed_round, !asked | asked signoff, our_game_bid, they.level>=4, they.strain is not N
     X      Penalty double of their spades
            shows over_our_game(S)
            when  natural_theirs(S), !partner_nt
     X      Penalty double of their hearts
            shows over_our_game(H)
            when  natural_theirs(H), !partner_nt
     X      Penalty double of their diamonds
            shows over_our_game(D)
            when  natural_theirs(D), !partner_nt
     X      Penalty double of their clubs
            shows over_our_game(C)
            when  natural_theirs(C), !partner_nt

   after (any auction)
     when they.bid, direct | passed_round, they_ran
     X      Penalty: four or more spades
            shows ran_into(S)
            when  natural_theirs(S), ran_to(S)
     X      Penalty: four or more hearts
            shows ran_into(H)
            when  natural_theirs(H), ran_to(H)
     X      Penalty: four or more diamonds
            shows ran_into(D)
            when  natural_theirs(D), ran_to(D)
     X      Penalty: four or more clubs
            shows ran_into(C)
            when  natural_theirs(C), ran_to(C)

   after (any auction)
     when they.bid, direct | passed_round, !asked, partner_preempted, me.bids=0
     X      Penalty double of their spades
            shows vs_overcall_of_preempt(S)
            when  natural_theirs(S)
     X      Penalty double of their hearts
            shows vs_overcall_of_preempt(H)
            when  natural_theirs(H)
     X      Penalty double of their diamonds
            shows vs_overcall_of_preempt(D)
            when  natural_theirs(D)
     X      Penalty double of their clubs
            shows vs_overcall_of_preempt(C)
            when  natural_theirs(C)

   after (any auction)
     when they.bid, passed_round, !asked, they.level=1, me.has_bid, partner.has_bid
     X      Penalty double of their spades
            shows one_level_pen(S)
            when  natural_theirs(S)
     X      Penalty double of their hearts
            shows one_level_pen(H)
            when  natural_theirs(H)
     X      Penalty double of their diamonds
            shows one_level_pen(D)
            when  natural_theirs(D)

   after (any auction)
     when asked penalty, rho.last=P
     P      Leaves the double in

== raptor: Raptor 1NT: a four-card major and a longer minor
   file: conventions/competitive/raptor.bid
   card: competitive.raptor_1nt.play
   needs: base, overcalls
   skills: competitive_bidding/raptor

   after (1x)
     1N     Raptor: five or more diamonds and four of a major  [alert]
            shows D>=5, H=4 | S=4, hcp>=8, hcp<=15
            when  !vul | hcp>=10, x is C
     1N     Raptor: five or more clubs and four of a major  [alert]
            shows C>=5, H=4 | S=4, hcp>=8, hcp<=15
            when  !vul | hcp>=10, x is D
     1N     Raptor: four spades and five or more of a minor  [alert]
            shows S=4, C>=5 | D>=5, hcp>=8, hcp<=15
            when  !vul | hcp>=10, x is H
     1N     Raptor: four hearts and five or more of a minor  [alert]
            shows H=4, C>=5 | D>=5, hcp>=8, hcp<=15
            when  !vul | hcp>=10, x is S

   after (1m) 1N (P) | (1m) 1N (X)
     cheapest(m) Cue bid: 11+, asks for partner's major  [alert]  [artificial]
            shows hcp+length_points>=11
     2H     To play: five or more hearts
            shows H>=5, H>=S, hcp+length_points<=10
     2S     To play: five or more spades
            shows S>=5, S>H, hcp+length_points<=10
     2D     To play: diamonds
            when  partner.D>=5
     2C     To play: clubs
            when  partner.C>=5
     3D     Invitational in diamonds: four or more, 9-10
            shows D>=4, hcp+length_points>=9
            when  partner.D>=5
     3C     Invitational in clubs: four or more, 9-10
            shows C>=4, hcp+length_points>=9
            when  partner.C>=5

   after (1M) 1N (P) | (1M) 1N (X)
     cheapest(M) Cue bid: 11+, asks for partner's minor  [alert]  [artificial]
            shows hcp+length_points>=11
     2S     To play: three or more spades
            shows S>=3, hcp+length_points<=10
            when  partner.S>=4
     2H     To play: three or more hearts
            shows H>=3, hcp+length_points<=10
            when  partner.H>=4
     3S     Invitational: four or more spades, 9-10
            shows S>=4, hcp+length_points>=9
            when  partner.S>=4
     2C     Pass or correct: to play in partner's minor  [alert]
            shows C>=3, D>=3
     2D     To play: six or more diamonds
            shows D>=6
            when  partner.H>=4

   after (any auction)
     when asked raptor_major
     cheapest(H) Four hearts
            shows H=4
     cheapest(S) Four spades
            shows S=4

   after (any auction)
     when asked raptor_minor
     3C     Clubs
            shows C>=5
     3D     Diamonds
            shows D>=5

   after (1M) 1N (P) 2C (P)
     P      Clubs: to play
            shows C>=5
     2D     Diamonds
            shows D>=5

== responsive-doubles: Responsive doubles
   file: conventions/competitive/responsive-doubles.bid
   card: doubles.responsive.play
   needs: base
   skills: competitive_bidding/responsive_doubles

   after (1x) X (2x)
     when x is C | x is D
     X      Responsive: both majors, 6+ total points  [alert]  [artificial]
            shows S>=4, H>=4, hcp+length_points>=6

   after (1x) X (3x)
     when x is C | x is D
     X      Responsive: both majors, 8+ total points  [alert]  [artificial]
            shows S>=4, H>=4, hcp+length_points>=8

   after (1x) X (4x)
     when x is C | x is D
     X      Responsive: both majors, 10+ total points  [alert]  [artificial]
            shows S>=4, H>=4, hcp+length_points>=10

   after (1x) X (2x)
     when x is H | x is S
     X      Responsive: both minors, 6+ total points  [alert]  [artificial]
            shows D>=4, C>=4, hcp+length_points>=6

   after (1x) X (3x)
     when x is H | x is S
     X      Responsive: both minors, 8+ total points  [alert]  [artificial]
            shows D>=4, C>=4, hcp+length_points>=8

   after (1x) X (4x)
     when x is H | x is S
     X      Responsive: both minors, 10+ total points  [alert]  [artificial]
            shows D>=4, C>=4, hcp+length_points>=10

   after (1x) 1y (2x) | (1x) 2y (3x) | (1x) P (P) 1y (2x)
     X      Responsive: the two unbid suits, 6+ total points  [alert]  [artificial]
            shows S>=4 | x is S | y is S, H>=4 | x is H | y is H, D>=4 | x is D | y is D, C>=4 | x is C | y is C, y=2, x<=3, hcp+length_points>=10

   after (1x) 1y (3x) | (1x) 2y (4x)
     X      Responsive: the two unbid suits, 8+ total points  [alert]  [artificial]
            shows S>=4 | x is S | y is S, H>=4 | x is H | y is H, D>=4 | x is D | y is D, C>=4 | x is C | y is C, y=2, x<=3, hcp+length_points>=11

   after (any auction)
     when asked responsive
     cheapest(S) Preference: spades
            shows S>=3, S>=H
            when  partner.S>=4
     cheapest(H) Preference: hearts
            shows H>=3, H>S
            when  partner.H>=4
     cheapest(D) Preference: diamonds
            shows D>=3, D>=C
            when  partner.D>=4
     cheapest(C) Preference: clubs
            shows C>=3, C>D
            when  partner.C>=4

== rubensohl: Rubensohl: transfers after interference over 1NT and after doubling a weak two
   file: conventions/competitive/rubensohl.bid
   needs: nt-interference, vs-preempts
   skills: competitive_bidding/rubensohl
   define rub_nt(y) = over_nt, rho.y>=4, maybe rho.H<=3 | maybe rho.S<=3
   define rub_nt_opener(y) = over_nt, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3

   after 1N (2D)
     when rub_nt(D)
     2N     Rubensohl: transfer to clubs, weak or game values  [alert]  [artificial]
            shows C>=6, C>D, H<=3, S<=3
     3C     Rubensohl: Stayman, game values, a four-card major  [alert]  [artificial]
            shows hcp>=10, H=4 | S=4, H<=4, S<=4
     3D     Rubensohl: transfer to hearts, invitational or better  [alert]  [artificial]
            shows H>=5, H>=S, hcp>=8
     3H     Rubensohl: transfer to spades, invitational or better  [alert]  [artificial]
            shows S>=5, S>H, hcp>=8
     3S     Rubensohl: game values, no stopper in {y}  [alert]  [artificial]
            shows hcp>=10, !stop(D), H<=3, S<=3
     3N     Game with a stopper in diamonds
            shows hcp>=10, stop(D), H<=3, S<=3

   after 1N (2H)
     when rub_nt(H)
     2N     Rubensohl: transfer to clubs, weak or game values  [alert]  [artificial]
            shows C>=6, C>=D, S<=3
     3C     Rubensohl: transfer to diamonds, weak or game values  [alert]  [artificial]
            shows D>=6, D>C, S<=3
     3D     Rubensohl: Stayman, game values, four spades  [alert]  [artificial]
            shows hcp>=10, S=4
     3H     Rubensohl: transfer to spades, invitational or better  [alert]  [artificial]
            shows S>=5, hcp>=8
     3S     Rubensohl: game values, no stopper in hearts  [alert]  [artificial]
            shows hcp>=10, !stop(H), S<=3
     3N     Game with a stopper in hearts
            shows hcp>=10, stop(H), S<=3

   after 1N (2S)
     when rub_nt(S)
     2N     Rubensohl: transfer to clubs, weak or game values  [alert]  [artificial]
            shows C>=6, C>=D, H<=3
     3C     Rubensohl: transfer to diamonds, weak or game values  [alert]  [artificial]
            shows D>=6, D>C, H<=3
     3D     Rubensohl: transfer to hearts, invitational or better  [alert]  [artificial]
            shows H>=5, hcp>=8
     3H     Rubensohl: Stayman, game values, four hearts  [alert]  [artificial]
            shows hcp>=10, H=4
     3S     Rubensohl: game values, no stopper in spades  [alert]  [artificial]
            shows hcp>=10, !stop(S), H<=3
     3N     Game with a stopper in spades
            shows hcp>=10, stop(S), H<=3

   after 1N (2y) 2N (P)
     when rub_nt_opener(y)
     3C     Completes the transfer to clubs  [artificial]

   after 1N (2y) 3C (P)
     when rub_nt_opener(y), y is not D
     3D     Completes the transfer to diamonds  [artificial]

   after 1N (2y) 3D (P)
     when rub_nt_opener(y), y is not H
     4H     A maximum and three or more hearts: game
            shows H>=3, hcp>=17
     3N     A maximum, two hearts
            shows H<=2, hcp>=17
     3H     Completes the transfer: a minimum  [artificial]

   after 1N (2y) 3H (P)
     when rub_nt_opener(y), y is not S
     4S     A maximum and three or more spades: game
            shows S>=3, hcp>=17
     3N     A maximum, two spades
            shows S<=2, hcp>=17
     3S     Completes the transfer: a minimum  [artificial]

   after 1N (2D) 3C (P)
     when rub_nt_opener(D)
     3H     Four hearts
            shows H>=4
     3S     Four spades
            shows S>=4, H<=3
     3N     No four-card major, diamonds stopped
            shows stop(D)
     3D     No four-card major, no stopper  [artificial]

   after 1N (2H) 3D (P)
     when rub_nt_opener(H)
     3S     Four spades
            shows S>=4
     3N     No four spades, hearts stopped
            shows stop(H)
     3H     No four spades, no stopper  [artificial]

   after 1N (2S) 3H (P)
     when rub_nt_opener(S)
     4H     Four hearts
            shows H>=4
     3N     No four hearts, spades stopped
            shows stop(S)
     3S     No four hearts, no stopper  [artificial]

   after 1N (2y) 3S (P)
     when rub_nt_opener(y)
     3N     A stopper in {y}
            shows stop(y)
     4C     No stopper: clubs
            shows C>=D
     4D     No stopper: diamonds
            shows D>C

   after 1N (2y) 2N (P) 3C (P)
     when rub_nt(y)
     P      Weak: to play in clubs
            shows hcp<=9
     3N     Game values with clubs
            shows hcp>=10

   after 1N (2y) 3C (P) 3D (P)
     when rub_nt(y), y is not D
     P      Weak: to play in diamonds
            shows hcp<=9
     3N     Game values with diamonds
            shows hcp>=10

   after 1N (2y) 3D (P) 3H (P)
     when rub_nt(y), y is not H
     P      Invitational: no more
            shows hcp<=9
     4H     Game: six or more hearts
            shows H>=6, hcp>=10
     3N     Game: five hearts, choice of games
            shows H=5, hcp>=10

   after 1N (2y) 3H (P) 3S (P)
     when rub_nt(y), y is not S
     P      Invitational: no more
            shows hcp<=9
     4S     Game: six or more spades
            shows S>=6, hcp>=10
     3N     Game: five spades, choice of games
            shows S=5, hcp>=10

   after 1N (2y) 3D (P) 3H (P) 3N (P)
     when rub_nt_opener(y), y is not H
     4H     Three hearts: the major
            shows H>=3
     P      Two hearts: notrump

   after 1N (2y) 3H (P) 3S (P) 3N (P)
     when rub_nt_opener(y), y is not S
     4S     Three spades: the major
            shows S>=3
     P      Two spades: notrump

   after 1N (2D) 3C (P) 3H (P) | 1N (2D) 3C (P) 3S (P) | 1N (2H) 3D (P) 3S (P) | 1N (2S) 3H (P) 4H (P)
     when over_nt
     4H     The heart fit: game
            shows H>=4
            when  partner.H>=4
     4S     The spade fit: game
            shows S>=4
            when  partner.S>=4
     3N     No fit: notrump
     P      Game reached

   after 1N (2D) 3C (P) 3D (P) | 1N (2H) 3D (P) 3H (P) | 1N (2S) 3H (P) 3S (P)
     when over_nt
     4C     No stopper: clubs
            shows C>=4, C>=D
     4D     No stopper: diamonds
            shows D>=4, D>C
     3N     To play in 3NT

   after (2x) X (P) | (2x) P (P) X (P)
     when after_x, x is not C
     2N     Rubensohl: transfer to clubs, to play or invite  [alert]  [artificial]
            shows C>=4, C>=D, hcp<=12 | C>=5, S<=3 | x is S, H<=3 | x is H
     3C     Rubensohl: transfer to diamonds, to play or invite  [alert]  [artificial]
            shows D>=4, D>C, hcp<=12 | D>=5, S<=3 | x is S, H<=3 | x is H
            when  x is not D
     3C     Rubensohl: Stayman, game values, a four-card major  [alert]  [artificial]
            shows hcp>=13, H=4 | S=4, H<=4, S<=4
            when  x is D
     3D     Rubensohl: transfer to hearts, four or more  [alert]  [artificial]
            shows H>=4, H>=S | x is S, hcp<=12
            when  x is S
     3D     Rubensohl: transfer to hearts, five or more, 9-12  [alert]  [artificial]
            shows H>=5, H>=S, hcp>=9, hcp<=12
            when  x is D
     3D     Rubensohl: Stayman, game values, four spades  [alert]  [artificial]
            shows hcp>=13, S=4
            when  x is H
     3H     Rubensohl: transfer to spades, five or more, 9-12  [alert]  [artificial]
            shows S>=5, hcp>=9, hcp<=12
            when  x is D | x is H
     3H     Rubensohl: Stayman, game values, four hearts  [alert]  [artificial]
            shows hcp>=13, H=4
            when  x is S
     3S     Rubensohl: game values, no stopper in {x}, no four-card major  [alert]  [artificial]
            shows hcp>=13, !stop(x), H<=3 | x is H, S<=3 | x is S
     3N     Game with {x} stopped
            shows hcp>=13, stop(x), H<=3 | x is H, S<=3 | x is S

   after (2x) X (P) 2N (P) | (2x) P (P) X (P) 2N (P)
     when after_x, x is not C
     3N     19+ with {x} stopped: game
            shows hcp>=19, stop(x)
     3C     Completes the transfer  [artificial]

   after (2x) X (P) 3C (P) | (2x) P (P) X (P) 3C (P)
     when after_x, x is not C, x is not D
     3N     19+ with {x} stopped: game
            shows hcp>=19, stop(x)
     3D     Completes the transfer  [artificial]

   after (2x) X (P) 3D (P) | (2x) P (P) X (P) 3D (P)
     when after_x, x is not C, x is not H
     4H     17+ and four hearts: game
            shows H>=4, hcp>=17
     3N     19+ with {x} stopped, two hearts or fewer: game
            shows hcp>=19, stop(x), H<=2
     3H     Completes the transfer  [artificial]

   after (2x) X (P) 3H (P) | (2x) P (P) X (P) 3H (P)
     when after_x, x is not C, x is not S
     4S     17+ and four spades: game
            shows S>=4, hcp>=17
     3N     19+ with {x} stopped, two spades or fewer: game
            shows hcp>=19, stop(x), S<=2
     3S     Completes the transfer  [artificial]

   after (2x) X (P) 3C (P) | (2x) P (P) X (P) 3C (P)
     when after_x, x is D
     3H     Four hearts
            shows H>=4
     3S     Four spades
            shows S>=4, H<=3
     3N     No four-card major, diamonds stopped
            shows stop(D)
     3D     No four-card major, no stopper  [artificial]

   after (2x) X (P) 3D (P) | (2x) P (P) X (P) 3D (P)
     when after_x, x is H
     3S     Four spades
            shows S>=4
     3N     No four spades, hearts stopped
            shows stop(H)
     3H     No four spades, no stopper  [artificial]

   after (2x) X (P) 3H (P) | (2x) P (P) X (P) 3H (P)
     when after_x, x is S
     4H     Four hearts
            shows H>=4
     3N     No four hearts, spades stopped
            shows stop(S)
     3S     No four hearts, no stopper  [artificial]

   after (2x) X (P) 3S (P) | (2x) P (P) X (P) 3S (P)
     when after_x, x is not C
     3N     A stopper in {x}
            shows stop(x)
     4C     No stopper: clubs
            shows C>=D
     4D     No stopper: diamonds
            shows D>C

   after (2x) X (P) 2N (P) 3C (P) | (2x) P (P) X (P) 2N (P) 3C (P) | (2x) X (P) 3C (P) 3D (P) | (2x) P (P) X (P) 3C (P) 3D (P)
     when after_x, x is not C
     P      Weak: to play
            shows hcp<=8
     3N     9+ with {x} stopped
            shows hcp>=9, stop(x)
     P      To play

   after (2x) X (P) 3D (P) 3H (P) | (2x) P (P) X (P) 3D (P) 3H (P)
     when after_x, x is not C, x is not H
     4H     Game: 11+ with five, or 12+
            shows hcp>=11, H>=5 | hcp>=12
     P      Weak or invitational: no more

   after (2x) X (P) 3H (P) 3S (P) | (2x) P (P) X (P) 3H (P) 3S (P)
     when after_x, x is not C, x is not S
     4S     Game: 11+ with five, or 12+
            shows hcp>=11, S>=5 | hcp>=12
     P      Invitational: no more

== sandwich-nt: Sandwich 1NT: the two unbid suits
   file: conventions/competitive/sandwich-nt.bid
   card: competitive.sandwich_nt.play
   needs: base, two-suited-overcalls
   skills: competitive_bidding/sandwich_nt

   after (1x) P (1y)
     when y is not x, !passed_hand | !u1n
     1N     Sandwich 1NT: the two unbid suits, hearts and spades  [alert]
            shows H>=4, S>=4, H>=5 | S>=5, hcp>=8, hcp<=15
            when  x is C, y is D
     1N     Sandwich 1NT: the two unbid suits, diamonds and spades  [alert]
            shows D>=4, S>=4, D>=5 | S>=5, hcp>=8, hcp<=15
            when  x is C, y is H
     1N     Sandwich 1NT: the two unbid suits, diamonds and hearts  [alert]
            shows D>=4, H>=4, D>=5 | H>=5, hcp>=8, hcp<=15
            when  x is C, y is S
     1N     Sandwich 1NT: the two unbid suits, clubs and spades  [alert]
            shows C>=4, S>=4, C>=5 | S>=5, hcp>=8, hcp<=15
            when  x is D, y is H
     1N     Sandwich 1NT: the two unbid suits, clubs and hearts  [alert]
            shows C>=4, H>=4, C>=5 | H>=5, hcp>=8, hcp<=15
            when  x is D, y is S
     1N     Sandwich 1NT: the two unbid suits, both minors  [alert]
            shows C>=4, D>=4, C>=5 | D>=5, hcp>=8, hcp<=15
            when  x is H, y is S

== scrambling-2nt: Scrambling 2NT
   file: conventions/competitive/scrambling-2nt.bid
   card: competitive.scrambling_2nt.play
   needs: base, takeout-double
   skills: competitive_bidding/scrambling_2nt

   after (1M) P (2M) X (P) | (1M) P (2M) P (P) X (P)
     2N     Scrambling: both minors, pick one  [alert]  [artificial]
            shows C>=4, D>=4, C<=5, D<=5, C+D>=8, hcp<=10, S<=3 | M is S, H<=3 | M is H

   after (any auction)
     when asked scramble
     3C     Four or more clubs
            shows C>=4
     3D     Diamonds: fewer than four clubs
            shows D>=4

   after (1M) P (2M) X (P) 2N (P) 3C (P) | (1M) P (2M) P (P) X (P) 2N (P) 3C (P)
     P      Clubs will do
            shows C>=D
     3D     Diamonds: longer
            shows D>C

== snapdragon: Snapdragon doubles
   file: conventions/competitive/snapdragon.bid
   card: competitive.snapdragon.play
   needs: base, advances
   skills: competitive_bidding/snapdragon

   after (1x) 1y (1z) | (1x) 1y (2z) | (1x) 2y (2z) | (1x) 2y (3z)
     when y is not x, z is not x, z is not y
     X      Snapdragon: five or more clubs, tolerance for {y}, 8+  [alert]
            shows C>=5, y>=2, hcp>=8
            when  x is not C, y is not C, z is not C
     X      Snapdragon: five or more diamonds, tolerance for {y}, 8+  [alert]
            shows D>=5, y>=2, hcp>=8
            when  x is not D, y is not D, z is not D
     X      Snapdragon: five or more hearts, tolerance for {y}, 8+  [alert]
            shows H>=5, y>=2, hcp>=8
            when  x is not H, y is not H, z is not H
     X      Snapdragon: five or more spades, tolerance for {y}, 8+  [alert]
            shows S>=5, y>=2, hcp>=8
            when  x is not S, y is not S, z is not S

   after (1x) 1y (1z) X (P) | (1x) 1y (2z) X (P) | (1x) 2y (2z) X (P) | (1x) 2y (3z) X (P) | (1x) 1y (1z) X (XX) | (1x) 1y (2z) X (XX) | (1x) 2y (2z) X (XX) | (1x) 2y (3z) X (XX)
     when y is not x, z is not x, z is not y
     jump(C) Fit for clubs and 15+
            shows C>=3, hcp+length_points>=15
            when  partner.C>=5
     jump(D) Fit for diamonds and 15+
            shows D>=3, hcp+length_points>=15
            when  partner.D>=5
     jump(H) Fit for hearts and 15+
            shows H>=3, hcp+length_points>=15
            when  partner.H>=5
     jump(S) Fit for spades and 15+
            shows S>=3, hcp+length_points>=15
            when  partner.S>=5
     cheapest(C) Three or more clubs
            shows C>=3
            when  partner.C>=5
     cheapest(D) Three or more diamonds
            shows D>=3
            when  partner.D>=5
     cheapest(H) Three or more hearts
            shows H>=3
            when  partner.H>=5
     cheapest(S) Three or more spades
            shows S>=3
            when  partner.S>=5
     cheapest(y) Six or more {y}
            shows y>=6
     cheapest(N) {z} stopped, no fit
            shows stop(z), hcp+length_points<=14
     cheapest(y) Back to {y}: no fit

== sos-redouble: SOS redouble
   file: conventions/competitive/sos-redouble.bid
   card: other_conventions.sos_redouble.play
   needs: base
   skills: competitive_bidding/sos_redouble

   after 1x (X) P (P)
     XX     SOS: {x} is short, pick another suit  [alert]  [artificial]
            shows x<=3
     P      To play: four or more {x}
            shows x>=4

   after 1x (X) P (P) XX (P)
     cheapest(C) Rescue: clubs
            shows C>=D | x is D, C>=H | x is H, C>=S | x is S
            when  x is not C
     cheapest(D) Rescue: diamonds
            shows D>C | x is C, D>=H | x is H, D>=S | x is S
            when  x is not D
     cheapest(H) Rescue: hearts
            shows H>C | x is C, H>D | x is D, H>=S | x is S
            when  x is not H
     cheapest(S) Rescue: spades
            shows S>C | x is C, S>D | x is D, S>H | x is H
            when  x is not S

== suction: Suction over their 1NT
   file: conventions/competitive/suction.bid
   needs: vs-1nt
   skills: competitive_bidding/suction, competitive_bidding/defense_vs_1nt
   define suction_one(x) = x>=6, second_longest<=4 | (x=5, quality(x)>=good, second_longest<=3)

   after (1N) | (1N) P (P)
     when def is suction
     X      Suction: clubs and hearts  [alert]
            shows C>=4, H>=4, C+H>=9, hcp+length_points>=10, hcp<=17
     2C     Suction: diamonds, or hearts and spades  [alert]  [artificial]
            shows suction_one(D) | (H>=4, S>=4, H+S>=9), hcp+length_points>=10, hcp<=17
     2D     Suction: hearts, or spades and clubs  [alert]  [artificial]
            shows suction_one(H) | (S>=4, C>=4, S+C>=9), hcp+length_points>=10, hcp<=17
     2H     Suction: spades, or clubs and diamonds  [alert]  [artificial]
            shows suction_one(S) | (C>=5, D>=5), hcp+length_points>=10, hcp<=17
     2S     Suction: clubs, or diamonds and hearts  [alert]  [artificial]
            shows suction_one(C) | (D>=5, H>=5), hcp+length_points>=10, hcp<=17
     2N     Suction: diamonds and spades  [alert]
            shows D>=5, S>=5, hcp+length_points>=10, hcp<=17

   after (any auction)
     when asked suc_relay(x), rho.last=P | rho.last=X | rho.last=XX
     cheapest(x) Suction relay: pass or correct  [alert]

   after (any auction)
     when asked suc_pick(a,b), rho.last=P | rho.last=X | rho.last=XX
     cheapest(a) Preference: {a}
            shows a>b
     cheapest(b) Preference: {b}
            shows b>=a

   after (any auction)
     when asked suc_correct(x), rho.last=P | rho.last=X
     P      My suit is {x}
            shows x>=5

   after (any auction)
     when asked suc_correct(D), rho.last=P | rho.last=X
     2H     Hearts and spades
            shows H>=4, S>=4

   after (any auction)
     when asked suc_correct(H), rho.last=P | rho.last=X
     2S     Spades and clubs
            shows S>=4, C>=4

   after (any auction)
     when asked suc_correct(S), rho.last=P | rho.last=X
     2N     Clubs and diamonds
            shows C>=5, D>=5

   after (any auction)
     when asked suc_correct(C), rho.last=P | rho.last=X
     3D     Diamonds and hearts
            shows D>=5, H>=5

   after (any auction)
     when asked suc_keep(a,b), rho.last=P | rho.last=X
     P      Keeps {a}
            shows a>=b
     cheapest(b) Prefers {b}
            shows b>a

== support-doubles: Support doubles and redoubles
   file: conventions/competitive/support-doubles.bid
   card: doubles.support.play
   needs: rebids
   skills: competitive_bidding/support_doubles

   after 1x (*) 1M (1z) | 1x (*) 1M (2z) | 1x (*) 1M (3z)
     when M is not x, z is not M
     when (through is none, rho.last<=2{M}) | rho.last<=through
     X      Support double: exactly three {M}  [alert]  [artificial]
            shows M=3
     jump(N) 18-19 balanced with a stopper in {z}
            shows balanced, hcp=18..19, M<=2, stop(z)
            when  nt_jump_to_game, lho.last=X
     3N     20+ with a stopper in {z}
            shows hcp>=20, M<=2, stop(z)
            when  lho.last=X
     cheapest(z) Cue bid: 18+, forcing to game  [alert]  [artificial]
            shows hcp>=18, M<=2
            when  lho.last=X

   after 1x (*) 1M (X)
     when M is not x, rdbl
     XX     Support redouble: exactly three {M}  [alert]  [artificial]
            shows M=3

   after (any auction)
     when asked support(M,x,z), rho.last=P, partner.last=X
     cheapest(M) Five or more {M}, minimum
            shows M>=5, points<=9
     jump(M) Five or more {M}, 10-11, invitational
            shows M>=5, points=10..11
     4M     Five or more {M}, 12+: game
            shows M>=5, points>=12
     1N     Four {M}, 6-10 balanced with a stopper in {z}
            shows M=4, balanced, points=6..10, stop(z)
     2N     Four {M}, 11-12, a stopper in {z}, invitational
            shows M=4, semibalanced, points=11..12, stop(z)
     3N     Four {M}, 13+ with a stopper in {z}
            shows M=4, semibalanced, points>=13, stop(z)
     cheapest(x) Raise: four or more {x}, minimum
            shows x>=4, M=4, points<=10
            when  x is C | x is D, z is not x, cheapest_rank(x)<=14
     cheapest(D) Four or more diamonds, minimum
            shows D>=4, M=4, points<=10
            when  x is C, z is not D, cheapest_rank(D)<=14, maybe lho.D<=4
     cheapest(C) Four or more clubs, minimum
            shows C>=4, M=4, points<=10
            when  x is not C, z is not C, cheapest_rank(C)<=14, maybe lho.C<=4
     cheapest(z) Cue bid: four {M}, 13+, no stopper in {z}  [alert]  [artificial]
            shows M=4, points>=13
     jump(M) Four {M}, 11-12, invitational
            shows M=4, points=11..12
     P      Penalty: four or more {z} with two of the top five
            shows z>=4, top5(z)>=2, M<=4, hcp>=7
     cheapest(M) Four {M}, no better bid
            shows M>=4

   after (any auction)
     when asked support(M), rho.last=P, partner.last=XX
     P      Plays one {M} redoubled
     4M     Five or more {M}, 13+: game
            shows M>=5, points>=13

   after (any auction)
     when asked support(M), rho.last!=P
     cheapest(M) Competes: five or more {M}
            shows M>=5, points<=11
     4M     Five or more {M}, 12+: game
            shows M>=5, points>=12
     P      No further bid

   after (any auction)
     when asked support_cue(M,z)
     3N     A stopper in {z}
            shows stop(z)
     4M     Game: no stopper in {z}

== takeout-double: Takeout doubles
   file: conventions/competitive/takeout-double.bid
   needs: base, overcalls
   skills: competitive_bidding/takeout_doubles

   after (1x)
     X      Takeout: the unbid suits and 12+, or any 18+
            shows hcp+length_points>=12, (S>=3 | x is S, H>=3 | x is H, D>=3 | x is D, C>=3 | x is C) | hcp>=oc_max+1, hcp+length_points>=13 | x>=3 | has(A,x) | has(K,x) | (!has(Q,x), !has(J,x)) | !vul | they.vul

   after (1x) X (P) | (1x) P (P) X (P)
     1H     0-8 total points, four or more hearts
            shows H>=4, H>=S | x is S, hcp+length_points<=8 | (H=4, hcp<=9)
            when  x is not H, x is not S
     1S     0-8 total points, four or more spades
            shows S>=4, S>H | x is H, hcp+length_points<=8 | (S=4, hcp<=9)
            when  x is not S
     1D     0-8 total points, four or more diamonds
            shows D>=4, D>C, S<=3 | x is S, H<=3 | x is H, hcp+length_points<=8 | (D=4, hcp<=9)
            when  x is not D, x is not H, x is not S
     2C     0-8 total points, four or more clubs
            shows C>=4, C>=D, S<=3 | x is S, H<=3 | x is H, hcp+length_points<=8 | (C=4, hcp<=9)
            when  x is not C
     2D     0-8 total points, four or more diamonds
            shows D>=4, D>C, S<=3 | x is S, H<=3 | x is H, hcp+length_points<=8 | (D=4, hcp<=9)
            when  x is not D, x is not C
     2H     0-8 total points, four or more hearts
            shows H>=4, H>=S | x is S, hcp+length_points<=8 | (H=4, hcp<=9)
            when  x is not H, x is not D, x is not C
     1N     7-10 HCP, balanced, a stopper in {x}
            shows balanced, hcp>=7, hcp<=10
            when  stop(x)
     2H     9-11 total points, four or more hearts
            shows H>=4, H>=S | x is S, hcp+length_points=9..11, H>=5 | hcp>=10
            when  x is not H, x is not S
     2S     9-11 total points, four or more spades
            shows S>=4, S>H | x is H, hcp+length_points=9..11, S>=5 | hcp>=10
            when  x is not S
     3C     9-11 total points, four or more clubs
            shows C>=4, C>=D, S<=3 | x is S, H<=3 | x is H, hcp+length_points=9..11, C>=5 | hcp>=10
            when  x is not C
     3D     9-11 total points, four or more diamonds
            shows D>=4, D>C, S<=3 | x is S, H<=3 | x is H, hcp+length_points=9..11, D>=5 | hcp>=10
            when  x is not D, x is not C
     3H     9-11 total points, four or more hearts
            shows H>=4, H>=S | x is S, hcp+length_points=9..11, H>=5 | hcp>=10
            when  x is not H, x is not D, x is not C
     2N     11-12 total points, balanced, a stopper in {x}
            shows balanced, hcp+length_points=11..12
            when  stop(x)
     3N     Game: 12+, a stopper in {x}
            shows hcp>=12, stop(x), H<=3 | x is H, S<=3 | x is S
     1D     0-8, no four-card suit to show: three diamonds
            shows D>=3, H<=3, S<=3, hcp<=8
            when  x is C
     1H     0-8, no four-card suit to show: three hearts
            shows H>=3, S<=3, hcp<=8
            when  x is not H, x is not S
     2C     0-8, no four-card suit to show: three clubs
            shows C>=3, H<=3, S<=3, hcp<=8
            when  x is not C
     2D     0-8, no four-card suit to show: three diamonds
            shows D>=3, H<=3, S<=3, hcp<=8
            when  x is not D, x is not C
     2{x}   Cue bid: 12+ total points, asks for a description  [alert]  [artificial]
            shows hcp+length_points>=12

   after (1x) X (P) 1y (P) | (1x) P (P) X (P) 1y (P)
     P      Minimum takeout double
            shows hcp<=16
     2{y}   18-19 total points, four-card support
            shows y>=4, hcp+length_points=17..19
     3{y}   20-21 total points, four-card support
            shows y>=4, hcp+length_points=20..21
     4{y}   22+ total points, four-card support for partner's major
            shows y>=4, hcp+length_points>=22
            when  y is H | y is S
     1N     18-19 balanced with a stopper in {x}
            shows balanced, hcp=17..19
            when  stop(x)
     cheapest(S) 18+ total points and a five-card spade suit
            shows S>=5, hcp+length_points>=18 | hcp>=17
            when  x is not S, y is not S
     cheapest(H) 18+ total points and a five-card heart suit
            shows H>=5, hcp+length_points>=18 | hcp>=17
            when  x is not H, y is not H
     cheapest(D) 18+ total points and a five-card diamond suit
            shows D>=5, hcp+length_points>=18 | hcp>=17
            when  x is not D, y is not D
     cheapest(C) 18+ total points and a five-card club suit
            shows C>=5, hcp+length_points>=18 | hcp>=17
            when  x is not C, y is not C

   after (1x) X (P) 2y (P) | (1x) P (P) X (P) 2y (P)
     P      Minimum takeout double
            shows hcp<=16
     3{y}   Strong raise: four-card support, 18+
            shows y>=4, hcp+length_points>=18 | hcp>=17
     3{y}   Strong raise: three-card support, 20+
            shows y=3, hcp>=20
     cheapest(S) 18+ total points and a five-card spade suit
            shows S>=5, hcp+length_points>=18 | hcp>=17
            when  x is not S, y is not S
     cheapest(H) 18+ total points and a five-card heart suit
            shows H>=5, hcp+length_points>=18 | hcp>=17
            when  x is not H, y is not H
     cheapest(D) 18+ total points and a five-card diamond suit
            shows D>=5, hcp+length_points>=18 | hcp>=17
            when  x is not D, y is not D
     cheapest(C) 18+ total points and a five-card club suit
            shows C>=5, hcp+length_points>=18 | hcp>=17
            when  x is not C, y is not C
     2N     18-19 balanced with a stopper in {x}
            shows balanced, hcp=17..19
            when  stop(x)

   after (1x) X (2x) P (P)
     cheapest(S) 16+ and five spades
            shows S>=5, hcp>=16
            when  x is not S
     cheapest(H) 16+ and five hearts
            shows H>=5, S<=4, hcp>=16
            when  x is not H
     X      Takeout again: short in {x}
            shows x<=1, hcp>=12
     P      No further bid

   after (1x) X (2x) P (P) X (P)
     cheapest(S) Takeout: four or more spades
            shows S>=4, S>=H, S>=D, S>=C
            when  x is not S
     cheapest(H) Takeout: four or more hearts
            shows H>=4, H>=D, H>=C
            when  x is not H
     cheapest(D) Takeout: my longest, diamonds
            shows D>=C
            when  x is not D
     cheapest(C) Takeout: my longest, clubs
            shows C>=3
            when  x is not C
     P      Penalty: five of their suit
            shows x>=5, hcp>=5

   after (1x) X (P) 1y (2x) | (1x) X (P) 2y (2x)
     3{y}   16+, four-card support
            shows y>=4, hcp+length_points>=16
     cheapest(C) 16+ and five clubs
            shows C>=5, hcp>=16, y<=3
            when  x is not C, y is not C
     cheapest(D) 16+ and five diamonds
            shows D>=5, D>C, hcp>=16, y<=3
            when  x is not D, y is not D
     2N     18-19 balanced with a stopper in {x}
            shows balanced, hcp=17..19
            when  stop(x)
     P      No further bid

   after (1x) X (1y) P (*) | (1x) X (2y) P (*)
     when y is not x, !rho.last=P
     cheapest(S) 18+ total points and five spades
            shows S>=5, hcp+length_points>=18 | hcp>=17
            when  x is not S, y is not S
     cheapest(H) 18+ total points and five hearts
            shows H>=5, S<=4, hcp+length_points>=18 | hcp>=17
            when  x is not H, y is not H
     cheapest(D) 18+ total points and five diamonds
            shows D>=5, S<=4, H<=4, hcp+length_points>=18 | hcp>=17
            when  x is not D, y is not D
     cheapest(C) 18+ total points and five clubs
            shows C>=5, D<=4, S<=4, H<=4, hcp+length_points>=18 | hcp>=17
            when  x is not C, y is not C

   after (1x) X (P) 2x (*)
     when !rho.last=P
     X      Power double: 17+ HCP
            shows hcp>=17
     P      No extras: 16 or less
            shows hcp<=16
     cheapest(S) Four or more spades, no extras
            shows S>=4, hcp<=16
            when  x is not S
     cheapest(H) Four or more hearts, no extras
            shows H>=4, S<=3, hcp<=16
            when  x is not H
     cheapest(N) A stopper in {x}, no extras
            shows stop(x), hcp<=16
     cheapest(D) Four or more diamonds, no extras
            shows D>=4, D>C | x is C, hcp<=16
            when  x is not D
     cheapest(C) Four or more clubs, no extras
            shows C>=4, C>=D | x is D, hcp<=16
            when  x is not C

   after (1x) X (1y) | (1x) P (P) X (1y)
     1S     Free bid: 6+ total points, four or more spades
            shows S>=4, hcp+length_points>=6
            when  x is not S, y is not S
     cheapest(H) Free bid: 6+ total points, five or more hearts
            shows H>=5, hcp+length_points>=6
            when  x is not H, y is not H
     cheapest(D) Free bid: 6+ total points, five or more diamonds
            shows D>=5, S<=3, H<=4, hcp+length_points>=6
            when  x is not D, y is not D
     cheapest(C) Free bid: 6+ total points, five or more clubs
            shows C>=5, S<=3, H<=4, hcp+length_points>=6
            when  x is not C, y is not C
     1N     8-11 total points, balanced, a stopper in both their suits
            shows balanced, hcp+length_points>=8, hcp+length_points<=11
            when  stop(x), stop(y)
     2{x}   Cue bid: 12+ total points  [alert]  [artificial]
            shows hcp+length_points>=12
     P      No free bid

   after (1x) X (2y) | (1x) P (P) X (2y)
     cheapest(S) Free bid: 8+ total points, five or more spades
            shows S>=5, hcp+length_points>=8
            when  x is not S, y is not S
     cheapest(H) Free bid: 8+ total points, five or more hearts
            shows H>=5, S<=4, hcp+length_points>=8
            when  x is not H, y is not H
     cheapest(D) Free bid: 8+ total points, five or more diamonds
            shows D>=5, S<=4, H<=4, hcp+length_points>=8
            when  x is not D, y is not D
     cheapest(C) Free bid: 8+ total points, five or more clubs
            shows C>=5, S<=4, H<=4, hcp+length_points>=8
            when  x is not C, y is not C
     2N     11-12 total points, balanced, a stopper in {x}
            shows balanced, hcp+length_points>=11, hcp+length_points<=12
            when  stop(x)
     P      No free bid

   after (1x) X (XX) | (1x) P (P) X (XX)
     cheapest(S) Four or more spades
            shows S>=4, S>H
            when  x is not S
     cheapest(H) Four or more hearts
            shows H>=4, H>=S
            when  x is not H
     cheapest(D) Four or more diamonds
            shows D>=4, D>C, S<=3 | x is S, H<=3 | x is H
            when  x is not D
     cheapest(C) Four or more clubs
            shows C>=4, C>=D, S<=3 | x is S, H<=3 | x is H
            when  x is not C
     P      No four-card suit to name

   after (1x) X (XX) P (P)
     cheapest(C) Rescue: four or more clubs, the cheapest
            shows C>=4
            when  x is not C
     cheapest(D) Rescue: four or more diamonds, the cheapest
            shows D>=4, C<=3 | x is C
            when  x is not D
     cheapest(H) Rescue: four or more hearts, the cheapest
            shows H>=4, C<=3 | x is C, D<=3 | x is D
            when  x is not H
     cheapest(S) Rescue: four or more spades
            shows S>=4, C<=3 | x is C, D<=3 | x is D, H<=3 | x is H
            when  x is not S
     P      Leaves it in: four or more of their suit
            shows x>=4

   after (1x) P (2x)
     X      Takeout of their raise: short in {x}, the unbid suits, 13+ HCP
            shows hcp>=13, x<=1, S>=3 | x is S, H>=3 | x is H, D>=3 | x is D, C>=3 | x is C

   after (1x) P (2x) X (P)
     4S     Game: four or more spades, 11+
            shows S>=4, S>=H | x is H, hcp+length_points>=11
            when  x is not S
     4H     Game: four or more hearts, 11+
            shows H>=4, H>S | x is S, hcp+length_points>=11
            when  x is not H
     3N     Game: 11+ with {x} stopped
            shows hcp>=11, stop(x), S<=3 | x is S, H<=3 | x is H
     P      Penalty: five or more {x} with two top honours
            shows x>=5, quality(x)>=good
     cheapest(S) Four or more spades
            shows S>=4, S>=H | x is H
            when  x is not S
     cheapest(H) Four or more hearts
            shows H>=4, H>S | x is S
            when  x is not H
     cheapest(D) Four or more diamonds
            shows D>=4, D>C, S<=3 | x is S, H<=3 | x is H
            when  x is not D
     cheapest(C) Four or more clubs
            shows C>=4, C>=D, S<=3 | x is S, H<=3 | x is H
            when  x is not C
     cheapest(C) No four-card suit: clubs
            when  x is not C, C>=D | x is D
     cheapest(D) No four-card suit: diamonds
            when  x is not D, D>C | x is C
     cheapest(H) No four-card suit: hearts
            when  x is not H
     cheapest(S) No four-card suit: spades
            when  x is not S

== their-1nt-overcall: Responder over their 1NT overcall
   file: conventions/competitive/their-1nt-overcall.bid
   needs: base

   after 1x (1N)
     X      Penalty: 10+ total points, no long suit of our own
            shows hcp+length_points>=10
            when  S<=4 | x is S, H<=4 | x is H, C<=5, D<=5
     2{x}   Raise: 6-9 total points, support for partner's suit
            shows x>=3, tp(x)>=6, tp(x)<=9
            when  x is H | x is S | x>=5
     2H     9+ total points, five or more hearts
            shows H>=5, hcp+length_points>=9
            when  x is not H
     2S     9+ total points, five or more spades
            shows S>=5, hcp+length_points>=9
            when  x is not S
     2C     9+ total points, six or more clubs
            shows C>=6, hcp+length_points>=9
            when  x is not C
     2D     9+ total points, six or more diamonds
            shows D>=6, hcp+length_points>=9
            when  x is not D
     3C     Preemptive: seven or more clubs, 5-9 total points
            shows C>=7, hcp+length_points>=5, hcp+length_points<=9
            when  x is not C
     3D     Preemptive: seven or more diamonds, 5-9 total points
            shows D>=7, hcp+length_points>=5, hcp+length_points<=9
            when  x is not D
     P      No suitable bid

   after 1x (1N) X (P)
     2{x}   Pulls: six or more {x}, a minimum with a singleton or void
            shows x>=6, hcp<=13, shortest<=1
     P      Leaves the double in

   after 1x (1N) X (*)
     when !rho.last=P
     P      No further bid

   after 1x (1N) 3z (P)
     when z is C | z is D, z is not x
     5{z}   Game in partner's suit: 19+ and support
            shows z>=2, hcp>=19
     P      No game

== total-tricks: The Law of Total Tricks
   file: conventions/competitive/total-tricks.bid
   needs: base
   skills: competitive_bidding/law_of_total_tricks
   define doubler_four(x) = (lho.H>=5 | rho.H>=5, partner.S>=3, partner.D>=3, partner.C>=3) | (lho.S>=5 | rho.S>=5, partner.H>=3, partner.D>=3, partner.C>=3), partner.x.min=3
   define opened_minor(x) = x is C | x is D, partner.opened, partner.x.min<=3
   define minor_raise(x) = !opened_minor(x) | x>=5
   define minor_preempt(x) = !opened_minor(x) | x>=6
   define weak_jump_raise(y) = y>=5 | favourable
   define lott_trumps(x) = we.fit(x).min+doubler_four(x)-unfavourable
   define they_compete = !rho.last=P | (partner.last=P, !lho.last=P)

   after (any auction)
     when they.bid, they.still_bidding, !game_reached
     2x     Competes: to play
            shows lott_trumps(x)=8
            when  doubler_four(x) | !doubler_four(x), partner.x>=3, hcp>=5, we.hcp.min<=24, they_compete
     3x     Competes: to play
            shows lott_trumps(x)=9
            when  doubler_four(x) | !doubler_four(x), partner.x>=3, hcp>=5, we.hcp.min<=24
     4x     Competes: to play
            shows lott_trumps(x)>=10
            when  doubler_four(x) | !doubler_four(x), partner.x>=3, hcp>=5, we.hcp.min<=24

== transfers-after-double: Transfer responses after their takeout double
   file: conventions/competitive/transfers-after-double.bid
   card: vs_to_double.new_suit_forcing_tfr
   needs: base, after-interference, vs-takeout-double
   skills: bidding_conventions/transfers_after_double

   after 1M (X)
     XX     Redouble: 10+, fewer than three {M}  [alert]  [artificial]
            shows hcp+length_points>=10, M<=2
     2N     A fit and 11+: three or more {M}  [alert]  [artificial]
            shows M>=3, tp(M)>=11
     1N     Transfer to clubs: five or more, a weak two or better  [alert]  [artificial]
            shows C>=5, C>=D, M<=2, hcp>=5, hcp>=8 | C>=6, S<=4 | M is S, H<=4
     2C     Transfer to diamonds: five or more, a weak two or better  [alert]  [artificial]
            shows D>=5, D>C, M<=2, hcp>=5, hcp>=8 | D>=6, S<=4 | M is S, H<=4
     2D     Transfer to hearts: a constructive raise, three hearts, 8-10  [alert]  [artificial]
            shows H=3, tp(H)>=8, tp(H)<=10
            when  M is H
     2D     Transfer to hearts: five or more, a weak two or better  [alert]  [artificial]
            shows H>=5, S<=2, hcp>=5, hcp>=8 | H>=6
            when  M is S
     2H     Transfer to spades: a constructive raise, three spades, 8-10  [alert]  [artificial]
            shows S=3, tp(S)>=8, tp(S)<=10
            when  M is S
     2{M}   Raise: three {M}, 4-7
            shows M=3, tp(M)>=4, tp(M)<=7
     3D     Four hearts, 8-10  [alert]  [artificial]
            shows H>=4, tp(H)>=8, tp(H)<=10
            when  M is H
     3H     Four spades, 8-10  [alert]  [artificial]
            shows S>=4, tp(S)>=8, tp(S)<=10
            when  M is S

   after 1H (X) 2D (P)
     4H     Game: 17+
            shows tp(H)>=17
     3H     Invites game: 15-16
            shows tp(H)>=15, tp(H)<=16
     2H     Minimum: completes the transfer

   after 1S (X) 2H (P)
     4S     Game: 17+
            shows tp(S)>=17
     3S     Invites game: 15-16
            shows tp(S)>=15, tp(S)<=16
     2S     Minimum: completes the transfer

   after 1M (X) 1N (P)
     2C     Completes the transfer  [artificial]

   after 1M (X) 2C (P)
     2D     Completes the transfer  [artificial]

   after 1S (X) 2D (P)
     2H     Completes the transfer  [artificial]

   after 1H (X) 3D (P)
     4H     Game: 15+
            shows tp(H)>=15
     3H     Minimum

   after 1S (X) 3H (P)
     4S     Game: 15+
            shows tp(S)>=15
     3S     Minimum

   after 1M (X) 1N (P) 2C (P)
     P      Weak: to play
            shows hcp<=9
     3C     Invites: 10-12, six or more clubs
            shows C>=6, hcp>=10, hcp<=12
     3N     Game values: 13+
            shows hcp>=13
     P      No further bid

   after 1M (X) 2C (P) 2D (P)
     P      Weak: to play
            shows hcp<=9
     3D     Invites: 10-12, six or more diamonds
            shows D>=6, hcp>=10, hcp<=12
     3N     Game values: 13+
            shows hcp>=13
     P      No further bid

   after 1S (X) 2D (P) 2H (P)
     P      Weak: to play
            shows hcp<=9
     3H     Invites: 10-12, six or more hearts
            shows H>=6, hcp>=10, hcp<=12
     4H     Game: six or more hearts, 13+
            shows H>=6, hcp>=13
     3N     Game values: 13+, five hearts
            shows hcp>=13
     P      No further bid

== two-suited-overcalls: Michaels cue bids and the Unusual 2NT
   file: conventions/competitive/two-suited-overcalls.bid
   needs: base, overcalls
   skills: competitive_bidding/michaels_unusual, competitive_bidding/unusual_vs_unusual, competitive_bidding/leaping_michaels, competitive_bidding/non_leaping_michaels

   after (1m)
     when mich_minors | mich_quasi | mich_play, !ghestem
     2{m}   Michaels: five or more in each major  [alert]  [artificial]
            shows H>=5, S>=5, hcp+length_points>=9, hcp<=17
            when  strength is wide_range, !vul
     2{m}   Michaels: five or more in each major  [alert]  [artificial]
            shows H>=5, S>=5, hcp+length_points>=11, hcp<=17
            when  strength is wide_range, vul
     2{m}   Michaels: five or more in each major, weak or 16+  [alert]  [artificial]
            shows H>=5, S>=5, hcp+length_points>=9, hcp<=11
            when  strength is weak_or_strong, !vul
     2{m}   Michaels: five or more in each major, weak or 16+  [alert]  [artificial]
            shows H>=5, S>=5, hcp+length_points>=11, hcp<=11
            when  strength is weak_or_strong, vul
     2{m}   Michaels: five or more in each major, weak or 16+  [alert]  [artificial]
            shows H>=5, S>=5, hcp>=16
            when  strength is weak_or_strong

   after (1H)
     when mich_majors | mich_play, !ghestem
     2H     Michaels: five or more spades and a five-card minor  [alert]  [artificial]
            shows S>=5, C>=5 | D>=5, hcp+length_points>=9, hcp<=17
            when  strength is wide_range, !vul
     2H     Michaels: five or more spades and a five-card minor  [alert]  [artificial]
            shows S>=5, C>=5 | D>=5, hcp+length_points>=11, hcp<=17
            when  strength is wide_range, vul
     2H     Michaels: spades and a minor, five-five, weak or 16+  [alert]  [artificial]
            shows S>=5, C>=5 | D>=5, hcp+length_points>=9, hcp<=11
            when  strength is weak_or_strong, !vul
     2H     Michaels: spades and a minor, five-five, weak or 16+  [alert]  [artificial]
            shows S>=5, C>=5 | D>=5, hcp+length_points>=11, hcp<=11
            when  strength is weak_or_strong, vul
     2H     Michaels: spades and a minor, five-five, weak or 16+  [alert]  [artificial]
            shows S>=5, C>=5 | D>=5, hcp>=16
            when  strength is weak_or_strong

   after (1S)
     when mich_majors | mich_play, !ghestem
     2S     Michaels: five or more hearts and a five-card minor  [alert]  [artificial]
            shows H>=5, C>=5 | D>=5, hcp+length_points>=9, hcp<=17
            when  strength is wide_range, !vul
     2S     Michaels: five or more hearts and a five-card minor  [alert]  [artificial]
            shows H>=5, C>=5 | D>=5, hcp+length_points>=11, hcp<=17
            when  strength is wide_range, vul
     2S     Michaels: hearts and a minor, five-five, weak or 16+  [alert]  [artificial]
            shows H>=5, C>=5 | D>=5, hcp+length_points>=9, hcp<=11
            when  strength is weak_or_strong, !vul
     2S     Michaels: hearts and a minor, five-five, weak or 16+  [alert]  [artificial]
            shows H>=5, C>=5 | D>=5, hcp+length_points>=11, hcp<=11
            when  strength is weak_or_strong, vul
     2S     Michaels: hearts and a minor, five-five, weak or 16+  [alert]  [artificial]
            shows H>=5, C>=5 | D>=5, hcp>=16
            when  strength is weak_or_strong

   after (1H) | (1S)
     when u2n_play | u2n_jump | ghestem
     2N     Unusual 2NT: five or more in each minor  [alert]  [artificial]
            shows C>=5, D>=5, hcp+length_points>=9

   after (1C)
     when u2n_play | u2n_jump | ghestem
     2N     Unusual 2NT: five or more diamonds and hearts  [alert]  [artificial]
            shows D>=5, H>=5, hcp+length_points>=9

   after (1D)
     when u2n_play | u2n_jump | ghestem
     2N     Unusual 2NT: five or more clubs and hearts  [alert]  [artificial]
            shows C>=5, H>=5, hcp+length_points>=9

   after (1m) P (2m)
     when mich_minors | mich_quasi | mich_play, !ghestem
     3{m}   Michaels: five or more in each major  [alert]  [artificial]
            shows H>=5, S>=5, hcp+length_points>=9, hcp<=17
            when  !vul
     3{m}   Michaels: five or more in each major  [alert]  [artificial]
            shows H>=5, S>=5, hcp+length_points>=11, hcp<=17
            when  vul

   after (1M) P (2M)
     when u2n_play | u2n_jump | ghestem
     2N     Unusual 2NT: five or more in each minor  [alert]  [artificial]
            shows C>=5, D>=5, hcp+length_points>=9

   after (1C) P (2C)
     when u2n_play | u2n_jump | ghestem
     2N     Unusual 2NT: five or more diamonds and hearts  [alert]  [artificial]
            shows D>=5, H>=5, hcp+length_points>=9

   after (1D) P (2D)
     when u2n_play | u2n_jump | ghestem
     2N     Unusual 2NT: five or more clubs and hearts  [alert]  [artificial]
            shows C>=5, H>=5, hcp+length_points>=9

   after (1m) P (2m) 3m (P) | (1m) P (2m) 3m (X)
     when partner.H>=5, partner.S>=5
     3H     Preference: more hearts than spades
            shows H>S
     3S     Preference: spades, at least as many as hearts
            shows S>=H
     4H     Game in hearts: four-card support, or three and 10+
            shows H>S, H>=4 | (H>=3, hcp>=10)
     4S     Game in spades: four-card support, or three and 10+
            shows S>=H, S>=4 | (S>=3, hcp>=10)
     3N     To play: 13+, {m} held, no major fit
            shows hcp>=13, H<=2, S<=2, stop(m)

   after (1m) P (2m) 3m (*)
     when partner.H>=5, partner.S>=5, !rho.last=P, !rho.last=X
     cheapest(H) Competes: three or more hearts, more than spades
            shows H>=3, H>S
     cheapest(S) Competes: three or more spades
            shows S>=3, S>=H
     P      No fit worth competing with

   after (1m) P (2m) 3m (*) 3y (*)
     when y is H | y is S
     P      Minimum: no further bid
     4{y}   Game: 16+ or four losers or fewer
            shows hcp>=16 | losers<=4

   after (1M) P (2M) 2N (P) | (1M) P (2M) 2N (X)
     when partner.C>=5, partner.D>=5
     3C     Preference: more clubs than diamonds
            shows C>D
     3D     Preference: diamonds, at least as many as clubs
            shows D>=C
     5C     Game in clubs: 12+ with four-card support
            shows C>=4, C>D, hcp>=12
     5D     Game in diamonds: 12+ with four-card support
            shows D>=4, D>=C, hcp>=12

   after (1C) P (2C) 2N (P) | (1C) P (2C) 2N (X)
     when partner.D>=5, partner.H>=5
     3D     Preference: more diamonds than hearts
            shows D>H
     3H     Preference: hearts, at least as many as diamonds
            shows H>=D
     4H     Game in hearts: four-card support, or three and 10+
            shows H>=D, H>=4 | (H>=3, hcp>=10)

   after (1D) P (2D) 2N (P) | (1D) P (2D) 2N (X)
     when partner.C>=5, partner.H>=5
     3C     Preference: more clubs than hearts
            shows C>H
     3H     Preference: hearts, at least as many as clubs
            shows H>=C
     4H     Game in hearts: four-card support, or three and 10+
            shows H>=C, H>=4 | (H>=3, hcp>=10)

   after (1x) P (2x) 2N (*)
     when partner.longest>=5, partner.second_longest>=5, !rho.last=P, !rho.last=X
     P      No fit worth competing with

   after (1x) P (2x) 2N (*) 3y (*)
     when y is not x
     P      Minimum: no further bid
     4{y}   Game in hearts: 16+ or four losers or fewer
            shows hcp>=16 | losers<=4
            when  y is H

   after (1m) 2m (P) | (1m) 2m (X)
     when partner.H>=5, partner.S>=5
     2H     Preference: more hearts than spades
            shows H>S
     2S     Preference: spades, at least as many as hearts
            shows S>=H
     3H     Jump preference: invitational, 10-12 with three hearts
            shows H>S, H>=3, hcp>=10, hcp<=12
     3S     Jump preference: invitational, 10-12 with three spades
            shows S>=H, S>=3, hcp>=10, hcp<=12
     4H     Game in hearts: weak with four, or 13-15
            shows H>S, (H>=4, hcp<=9) | (H>=3, hcp>=13, hcp<=15)
     4S     Game in spades: weak with four, or 13-15
            shows S>=H, (S>=4, hcp<=9) | (S>=3, hcp>=13, hcp<=15)
     3{m}   Cue bid: 16+, game or slam interest  [alert]  [artificial]
            shows hcp>=16
     3N     To play: 13+, their suit held, no major fit
            shows hcp>=13, H<=2, S<=2, stop(m)
     2D     Natural: six or more diamonds, no major fit
            shows D>=6, H<=2, S<=2, hcp<=12
            when  m is C

   after (1m) 2m (*)
     when partner.H>=5, partner.S>=5
     cheapest(H) Competes: three or more hearts, more than spades
            shows H>=3, H>S, hcp<=12
     cheapest(S) Competes: three or more spades
            shows S>=3, S>=H, hcp<=12
     4H     Game in hearts over their bid
            shows H>=4, H>S
     4S     Game in spades over their bid
            shows S>=4, S>=H
     P      No fit worth competing with

   after (1H) 2H (P) | (1H) 2H (X)
     when partner.S>=5
     2S     Preference: three or more spades
            shows S>=3
     2N     Asks for your minor, to play: at most two spades  [alert]  [artificial]
            shows S<=2
            when  mich_adv is ask_2nt
     3C     Natural: six or more clubs, to play
            shows C>=6, S<=2, hcp<=12
            when  mich_adv is ask_2nt
     2N     Asks for your minor: 10+, at most two spades  [alert]  [artificial]
            shows S<=2, hcp>=10
            when  mich_adv is pass_or_correct
     3C     Pass or correct: your minor, up to 9  [alert]  [artificial]
            shows S<=2, hcp<=9
            when  mich_adv is pass_or_correct
     3D     Natural: six or more diamonds, to play
            shows D>=6, S<=2, hcp<=12
     3S     Jump preference: invitational, 10-12 with three spades
            shows S>=3, hcp>=10, hcp<=12
     4S     Game in spades: weak with four, or 13-15
            shows (S>=4, hcp<=9) | (S>=3, hcp>=13, hcp<=15)
     3H     Cue bid: a strong spade raise, 16+, game or slam interest  [alert]  [artificial]
            shows S>=3, hcp>=16
     3N     To play: 13+, hearts held, no spade fit
            shows hcp>=13, S<=2, stop(H)
            when  C<=2 | D<=2

   after (1S) 2S (P) | (1S) 2S (X)
     when partner.H>=5
     3H     Preference: three or more hearts
            shows H>=3
     2N     Asks for your minor, to play: at most two hearts  [alert]  [artificial]
            shows H<=2
            when  mich_adv is ask_2nt
     3C     Natural: six or more clubs, to play
            shows C>=6, H<=2, hcp<=12
            when  mich_adv is ask_2nt
     2N     Asks for your minor: 10+, at most two hearts  [alert]  [artificial]
            shows H<=2, hcp>=10
            when  mich_adv is pass_or_correct
     3C     Pass or correct: your minor, up to 9  [alert]  [artificial]
            shows H<=2, hcp<=9
            when  mich_adv is pass_or_correct
     3D     Natural: six or more diamonds, to play
            shows D>=6, H<=2, hcp<=12
     4H     Game in hearts: weak with four, or 13-15
            shows (H>=4, hcp<=9) | (H>=3, hcp>=13, hcp<=15)
     3S     Cue bid: a heart raise, 12+, game interest  [alert]  [artificial]
            shows H>=3, hcp>=12
     3N     To play: 13+, spades held, no heart fit
            shows hcp>=13, H<=2, stop(S)
            when  C<=2 | D<=2

   after (1M) 2M (*)
     when partner.S>=5 | partner.H>=5
     cheapest(S) Competes: three or more spades
            shows S>=3, hcp<=12
            when  M is H
     cheapest(H) Competes: three or more hearts
            shows H>=3, hcp<=12
            when  M is S
     P      No fit worth competing with

   after (1M) 2M (*) 3m (*)
     when mich_adv is ask_2nt | m is D
     P      Partner's own suit: to play

   after (1M) 2M (*) 3C (P) | (1M) 2M (*) 3C (X)
     when mich_adv is pass_or_correct
     P      My minor is clubs: to play
            shows C>=5, C>=D
     3D     My minor is diamonds
            shows D>=5, D>C

   after (1M) 2M (*) 3C (*)
     when mich_adv is pass_or_correct, they.bid
     cheapest(C) Competes: my minor is clubs, 13+ or six
            shows C>=5, C>=D, hcp>=13 | C>=6
     cheapest(D) Competes: my minor is diamonds, 13+ or six
            shows D>=5, D>C, hcp>=13 | D>=6
     P      A minimum over their bid

   after (1M) 2M (*) 3C (*) 3D (*)
     when mich_adv is pass_or_correct
     P      To play in partner's minor

   after (1M) 2M (*) 2N (P) | (1M) 2M (*) 2N (X)
     3C     My minor is clubs
            shows C>=5, C>=D
     3D     My minor is diamonds
            shows D>=5, D>C

   after (1M) 2M (*) 2N (*)
     when they.bid
     cheapest(C) Competes: my minor is clubs, 13+ or six
            shows C>=5, C>=D, hcp>=13 | C>=6
     cheapest(D) Competes: my minor is diamonds, 13+ or six
            shows D>=5, D>C, hcp>=13 | D>=6
     P      A minimum over their bid

   after (1M) 2M (*) 2N (*) 3m (*) | (1M) 2M (*) 2N (*) 4m (*)
     P      To play in partner's minor
     4{m}   Invites game in partner's minor: 10-12, three-card support
            shows hcp>=10, hcp<=12, m>=3
            when  m<=3 | hcp<=11
     3N     Game: 13+, {M} held
            shows hcp>=13, stop(M)
     5{m}   Game in partner's minor: 13+, or 12 with four
            shows (hcp>=13, m>=3) | (hcp>=12, m>=4)
     4{M}   Slam try in partner's minor: 17+, four-card support  [alert]  [artificial]
            shows hcp>=17, m>=4

   after (1M) 2M (*) 2N (*) 3m (*) 4m (*)
     5{m}   Accepts: 14+, or 12+ with six of the minor
            shows hcp>=14 | (hcp>=12, m>=6)
     P      Declines: a minimum

   after (1M) 2M (*) 2N (*) 3m (*) 4M (*)
     6{m}   Accepts the slam try: 13+
            shows hcp>=13
     5{m}   Declines: a minimum

   after (1M) 2N (P) | (1M) 2N (X)
     when partner.C>=5, partner.D>=5
     3C     Preference: more clubs than diamonds
            shows C>D
     3D     Preference: diamonds, at least as many as clubs
            shows D>=C
     4C     Preemptive: four or more clubs, up to 8
            shows C>=4, C>D, hcp<=8
     4D     Preemptive: four or more diamonds, up to 8
            shows D>=4, D>=C, hcp<=8
     5C     Game in clubs: 12+ with four-card support
            shows C>=4, C>D, hcp>=12
     5D     Game in diamonds: 12+ with four-card support
            shows D>=4, D>=C, hcp>=12
     3N     To play: 13+, both majors held
            shows hcp>=13, stop(H), stop(S)
     3{M}   Cue bid: 16+, game or slam interest  [alert]  [artificial]
            shows hcp>=16

   after (1C) 2N (P) | (1C) 2N (X)
     when partner.D>=5, partner.H>=5
     3D     Preference: more diamonds than hearts
            shows D>H
     3H     Preference: hearts, at least as many as diamonds
            shows H>=D
     4D     Preemptive: four or more diamonds, up to 8
            shows D>=4, D>H, hcp<=8
     4H     Game in hearts: weak with four, or 12-15
            shows H>=D, (H>=4, hcp<=8) | (H>=3, hcp>=12, hcp<=15)
     3N     To play: 13+, clubs and spades held
            shows hcp>=13, stop(C), stop(S)
     3C     Cue bid: 16+, game or slam interest  [alert]  [artificial]
            shows hcp>=16

   after (1D) 2N (P) | (1D) 2N (X)
     when partner.C>=5, partner.H>=5
     3C     Preference: more clubs than hearts
            shows C>H
     3H     Preference: hearts, at least as many as clubs
            shows H>=C
     4C     Preemptive: four or more clubs, up to 8
            shows C>=4, C>H, hcp<=8
     4H     Game in hearts: weak with four, or 12-15
            shows H>=C, (H>=4, hcp<=8) | (H>=3, hcp>=12, hcp<=15)
     3N     To play: 13+, diamonds and spades held
            shows hcp>=13, stop(D), stop(S)
     3D     Cue bid: 16+, game or slam interest  [alert]  [artificial]
            shows hcp>=16

   after (1x) 2N (*)
     when partner.longest>=5, partner.second_longest>=5
     P      No fit worth competing with

   after (1x) 2x (P) 2y (P) | (1x) 2x (P) 3y (P)
     when y is not x, y is H | y is S, !partner.jumped
     P      Minimum: no further bid
     3{y}   Strong two-suiter: invites game
            shows hcp>=15, hcp<=16
     4{y}   Strong two-suiter: game
            shows hcp>=17

   after (1x) 2x (P) 3y (P)
     when y is not x, y is H | y is S, partner.jumped
     4{y}   Accepts the invitation
            shows hcp>=11
     P      Declines: a minimum

   after (1m) 2m (*) 3m (P) | (1m) 2m (*) 3m (X)
     cheapest(S) Minimum: spades
            shows S>=H, hcp<=12
     cheapest(H) Minimum: hearts
            shows H>S, hcp<=12
     4S     Maximum: game in spades
            shows S>=H, hcp>=13
     4H     Maximum: game in hearts
            shows H>S, hcp>=13

   after (1H) 2H (*) 3H (P) | (1H) 2H (*) 3H (X)
     3S     Minimum: spades
            shows hcp<=12
     4C     Maximum: my minor is clubs
            shows C>=5, C>=D, hcp>=13
     4D     Maximum: my minor is diamonds
            shows D>=5, D>C, hcp>=13
     4S     Maximum: six or more spades
            shows S>=6, hcp>=13

   after (1S) 2S (*) 3S (P) | (1S) 2S (*) 3S (X)
     4H     Minimum: game in hearts
            shows hcp<=12
     4C     Maximum: my minor is clubs
            shows C>=5, C>=D, hcp>=13
     4D     Maximum: my minor is diamonds
            shows D>=5, D>C, hcp>=13

   after (1M) 2M (*) 3M (*) 4m (P) | (1M) 2M (*) 3M (*) 4m (X)
     4H     Game in hearts: the fit the cue bid showed
            when  M is S
     4S     Game in spades: the fit the cue bid showed
            when  M is H

   after (1x) 2x (*) 3x (*) 3y (*)
     when y is H | y is S, y is not x
     4{y}   Game: three or more {y}
            shows y>=3
     3N     Game: {x} held, no {y} fit
            shows stop(x)
     4{y}   Game in the best fit

   after (1x) 2N (P) 3y (P)
     when y is not x
     P      Minimum: no further bid
     4{y}   Strong: game in hearts
            shows hcp>=17
            when  y is H
     3N     Strong: 17+, {x} held
            shows hcp>=17, stop(x)

   after (1x) 2N (P) 3x (P)
     cheapest(C) Minimum: clubs
            shows C>=5, C>=D, hcp<=12
            when  x is H | x is S
     cheapest(D) Minimum: diamonds
            shows D>=5, D>C, hcp<=12
            when  x is H | x is S
     3N     Maximum: 13+, {x} held
            shows hcp>=13, stop(x)
     cheapest(H) Hearts
            shows H>=5
            when  x is C | x is D

   after 1H (2H)
     when rho.S>=5
     2S     Cue bid: limit raise or better in hearts  [alert]  [artificial]
            shows H>=3, hcp+length_points>=10
     3H     Competitive raise: 6-9, three or more hearts
            shows H>=3, hcp+length_points>=6, hcp+length_points<=9
     4H     Preemptive raise: four or more hearts, under 10
            shows H>=4, hcp+length_points<=9
     2N     11-12, spades held, no fit
            shows hcp>=11, hcp<=12, stop(S), H<=2
     3N     13+, spades held, no fit
            shows hcp>=13, stop(S), H<=2
     3C     Natural: five or more clubs, 12+, forcing
            shows C>=5, H<=2, hcp>=12
     3D     Natural: five or more diamonds, 12+, forcing
            shows D>=5, H<=2, hcp>=12
     P      Nothing to say over their Michaels

   after 1S (2S)
     when rho.H>=5
     3H     Cue bid: limit raise or better in spades  [alert]  [artificial]
            shows S>=3, hcp+length_points>=10
     3S     Competitive raise: 6-9, three or more spades
            shows S>=3, hcp+length_points>=6, hcp+length_points<=9
     4S     Preemptive raise: four or more spades, under 10
            shows S>=4, hcp+length_points<=9
     2N     11-12, hearts held, no fit
            shows hcp>=11, hcp<=12, stop(H), S<=2
     3N     13+, hearts held, no fit
            shows hcp>=13, stop(H), S<=2
     3C     Natural: five or more clubs, 12+, forcing
            shows C>=5, S<=2, hcp>=12
     3D     Natural: five or more diamonds, 12+, forcing
            shows D>=5, S<=2, hcp>=12
     P      Nothing to say over their Michaels

   after 1m (2m)
     when rho.H>=5, rho.S>=5
     2H     Cue bid: limit raise or better in {m}  [alert]  [artificial]
            shows m>=4, hcp+length_points>=11
     3{m}   Competitive raise: 6-9, four or more {m}
            shows m>=4, hcp+length_points>=6, hcp+length_points<=9
     2D     Natural: five or more diamonds, 8+
            shows D>=5, hcp+length_points>=8
            when  m is C
     3C     Natural: five or more clubs, 10+
            shows C>=5, hcp+length_points>=10
            when  m is D
     2N     11-12, both majors held
            shows hcp>=11, hcp<=12, stop(H), stop(S)
     3N     13+, both majors held
            shows hcp>=13, stop(H), stop(S)
     P      Nothing to say over their Michaels

   after 1M (2N)
     when rho.C>=5, rho.D>=5
     3{M}   Competitive raise: 7-10, three or more {M}
            shows M>=3, hcp+length_points>=7, hcp+length_points<=10
     4{M}   Preemptive raise: four or more {M}, under 10
            shows M>=4, hcp+length_points<=9
     3N     13+, both minors held, no fit
            shows hcp>=13, stop(C), stop(D), M<=2
     P      Nothing to say over their 2NT

   after 1M (2N)
     when rho.C>=5, rho.D>=5, !uvu
     3C     Cue bid: limit raise or better in {M}  [alert]  [artificial]
            shows M>=3, hcp+length_points>=10
     3D     Cue bid: game force without a fit  [alert]  [artificial]
            shows hcp>=13, M<=2
     3S     Natural: five or more spades, 12+, forcing
            shows S>=5, H<=2, hcp>=12
            when  M is H

   after 1M (2N)
     when rho.C>=5, rho.D>=5, uvu
     3D     Unusual vs Unusual: limit raise or better in {M}  [alert]  [artificial]
            shows M>=3, hcp+length_points>=10
     3C     Unusual vs Unusual: game force with five of the other major  [alert]  [artificial]
            shows hcp>=13, M<=2, S>=5 | M is S, H>=5 | M is H
     3S     Natural: five or more spades, 7-10
            shows S>=5, H<=2, hcp+length_points>=7, hcp+length_points<=10
            when  M is H

   after 1C (2N)
     when rho.D>=5, rho.H>=5
     3D     Cue bid: limit raise or better in clubs  [alert]  [artificial]
            shows C>=5, hcp+length_points>=10
     3C     Competitive raise: 6-9, five or more clubs
            shows C>=5, hcp+length_points>=6, hcp+length_points<=9
     3S     Natural: five or more spades, 10+, forcing
            shows S>=5, hcp+length_points>=10
     3N     13+, diamonds and hearts held
            shows hcp>=13, stop(D), stop(H)
     P      Nothing to say over their 2NT

   after 1D (2N)
     when rho.C>=5, rho.H>=5
     3C     Cue bid: limit raise or better in diamonds  [alert]  [artificial]
            shows D>=4, hcp+length_points>=10
     3D     Competitive raise: 6-9, four or more diamonds
            shows D>=4, hcp+length_points>=6, hcp+length_points<=9
     3S     Natural: five or more spades, 10+, forcing
            shows S>=5, hcp+length_points>=10
     3N     13+, clubs and hearts held
            shows hcp>=13, stop(C), stop(H)
     P      Nothing to say over their 2NT

   after 1m (2m) 3m (P) | 1M (2M) 3M (P) | 1M (2N) 3M (P)
     when they.bid
     4{M}   Game: 17+ opposite the competitive raise
            shows tp(M)>=17
     P      No game

   after 1x (2x) 2N (P)
     when they.bid
     3N     Accepts: 14+
            shows hcp>=14
     P      Minimum: no game

   after 1x (2x) 3x (*) | 1x (2x) 4x (*) | 1x (2N) 3x (*) | 1x (2N) 4x (*) | 1x (2x) 2N (*) | 1x (2x) 3N (*) | 1x (2N) 3N (*)
     when they.bid
     X      Penalty: 15+ HCP
            shows hcp>=15
     P      No further bid

   after 1x (2x) 3x (*) X (P) | 1x (2x) 4x (*) X (P) | 1x (2N) 3x (*) X (P) | 1x (2N) 4x (*) X (P) | 1x (2x) 2N (*) X (P) | 1x (2x) 3N (*) X (P) | 1x (2N) 3N (*) X (P)
     when they.bid
     P      Leaves the double in

   after (any auction)
     when asked limit_raise(t)
     4{t}   Accepts: game in {t}
            shows tp(t)>=14
            when  t is H | t is S
     3N     Accepts: 14+, game in notrump
            shows hcp>=14
            when  t is C | t is D
     5{t}   Accepts: 16+, game in {t}
            shows hcp>=16, t>=5
            when  t is C | t is D
     cheapest(t) Minimum: signs off

   after (1x)
     when u1n_play, passed_hand
     1N     Unusual 1NT: diamonds and hearts, five-four or better  [alert]  [artificial]
            shows D>=4, H>=4, D>=5 | H>=5, hcp>=6
            when  x is C
     1N     Unusual 1NT: clubs and hearts, five-four or better  [alert]  [artificial]
            shows C>=4, H>=4, C>=5 | H>=5, hcp>=6
            when  x is D
     1N     Unusual 1NT: both minors, five-four or better  [alert]  [artificial]
            shows C>=4, D>=4, C>=5 | D>=5, hcp>=6
            when  x is H | x is S

   after (1x) P (1y)
     when u1n_play, passed_hand, y is not x
     1N     Unusual 1NT: the two unbid suits, hearts and spades  [alert]  [artificial]
            shows H>=4, S>=4, H>=5 | S>=5, hcp>=6
            when  x is C, y is D
     1N     Unusual 1NT: the two unbid suits, diamonds and spades  [alert]  [artificial]
            shows D>=4, S>=4, D>=5 | S>=5, hcp>=6
            when  x is C, y is H
     1N     Unusual 1NT: the two unbid suits, diamonds and hearts  [alert]  [artificial]
            shows D>=4, H>=4, D>=5 | H>=5, hcp>=6
            when  x is C, y is S
     1N     Unusual 1NT: the two unbid suits, clubs and spades  [alert]  [artificial]
            shows C>=4, S>=4, C>=5 | S>=5, hcp>=6
            when  x is D, y is H
     1N     Unusual 1NT: the two unbid suits, clubs and hearts  [alert]  [artificial]
            shows C>=4, H>=4, C>=5 | H>=5, hcp>=6
            when  x is D, y is S
     1N     Unusual 1NT: the two unbid suits, both minors  [alert]  [artificial]
            shows C>=4, D>=4, C>=5 | D>=5, hcp>=6
            when  x is H, y is S

   after (1x) 1N (P) | (1x) 1N (X) | (1x) P (1y) 1N (P) | (1x) P (1y) 1N (X)
     when u1n_play | sandwich
     cheapest(C) Preference: clubs
            when  partner.C>=4
     cheapest(D) Preference: diamonds
            when  partner.D>=4
     cheapest(H) Preference: hearts
            when  partner.H>=4
     cheapest(S) Preference: spades
            when  partner.S>=4
     jump(C) Invitational: four or more clubs, 11+
            shows C>=4, hcp>=11
            when  partner.C>=4
     jump(D) Invitational: four or more diamonds, 11+
            shows D>=4, hcp>=11
            when  partner.D>=4
     jump(H) Invitational: four or more hearts, 11+
            shows H>=4, hcp>=11
            when  partner.H>=4
     jump(S) Invitational: four or more spades, 11+
            shows S>=4, hcp>=11
            when  partner.S>=4

   after (1x) | (1x) P (2x) | (1x) P (3x) | (1x) P (4x)
     when u4n_play
     4N     Unusual 4NT: both minors, six-six or seven-five  [alert]  [artificial]
            shows (C>=6, D>=6) | (C>=7, D>=5) | (C>=5, D>=7)
            when  x is H | x is S
     4N     Unusual 4NT: diamonds and hearts, six-six or seven-five  [alert]  [artificial]
            shows (D>=6, H>=6) | (D>=7, H>=5) | (D>=5, H>=7)
            when  x is C
     4N     Unusual 4NT: clubs and hearts, six-six or seven-five  [alert]  [artificial]
            shows (C>=6, H>=6) | (C>=7, H>=5) | (C>=5, H>=7)
            when  x is D

   after (2x) | (3x)
     when u4n_play, x is not N, rho.hcp.max<=12, rho.x>=5
     4N     Unusual 4NT: both minors, five-five, strong  [alert]  [artificial]
            shows C>=5, D>=5, losers<=4
            when  x is H | x is S
     4N     Unusual 4NT: clubs and hearts, five-five, strong  [alert]  [artificial]
            shows C>=5, H>=5, losers<=4
            when  x is D
     4N     Unusual 4NT: diamonds and hearts, five-five, strong  [alert]  [artificial]
            shows D>=5, H>=5, losers<=4
            when  x is C

   after (4M)
     when u4n_play, rho.hcp.max<=12, rho.M>=5
     4N     Unusual 4NT: both minors, five-five  [alert]  [artificial]
            shows C>=5, D>=5, losers<=5

   after (1x) 4N (P) | (2x) 4N (P) | (3x) 4N (P) | (4x) 4N (P) | (1x) P (2x) 4N (P) | (1x) P (3x) 4N (P) | (1x) P (4x) 4N (P) | (1x) 4N (X) | (2x) 4N (X) | (3x) 4N (X) | (4x) 4N (X)
     when u4n_play
     cheapest(C) Preference: clubs
            when  partner.C>=5
     cheapest(D) Preference: diamonds
            when  partner.D>=5
     cheapest(H) Preference: hearts
            when  partner.H>=5

   after (2x)
     when mich_play | mich_minors | mich_quasi | mich_majors | nlm, x is not N, rho.hcp.max<=12, rho.x>=5, !leaping
     3{x}   Michaels: five or more in each major  [alert]  [artificial]
            shows H>=5, S>=5, hcp+length_points>=13
            when  x is C | x is D
     3{x}   Michaels: five or more spades and a five-card minor  [alert]  [artificial]
            shows S>=5, C>=5 | D>=5, hcp+length_points>=13
            when  x is H
     3{x}   Michaels: five or more hearts and a five-card minor  [alert]  [artificial]
            shows H>=5, C>=5 | D>=5, hcp+length_points>=13
            when  x is S

   after (2x) P (P) | (2x) P (3x)
     when mich_play | mich_minors | mich_quasi | mich_majors | nlm, x is not N, lho.hcp.max<=12, lho.x>=5
     cheapest(x) Michaels: five or more in each major  [alert]  [artificial]
            shows H>=5, S>=5, hcp+length_points>=11
            when  x is C | x is D
     cheapest(x) Michaels: five or more spades and a five-card minor  [alert]  [artificial]
            shows S>=5, C>=5 | D>=5, hcp+length_points>=11
            when  x is H
     cheapest(x) Michaels: five or more hearts and a five-card minor  [alert]  [artificial]
            shows H>=5, C>=5 | D>=5, hcp+length_points>=11
            when  x is S

   after (3x)
     when mich_play | mich_minors | mich_quasi | mich_majors | nlm, x is not N, rho.hcp.max<=12, rho.x>=5
     4{x}   Michaels: both majors, game values  [alert]  [artificial]
            shows H>=5, S>=5, hcp+length_points>=16
            when  x is C | x is D
     4{x}   Michaels: spades and a five-card minor, game values  [alert]  [artificial]
            shows S>=5, C>=5 | D>=5, hcp+length_points>=16
            when  x is H
     4{x}   Michaels: hearts and a five-card minor, game values  [alert]  [artificial]
            shows H>=5, C>=5 | D>=5, hcp+length_points>=16
            when  x is S

   after (2x)
     when leaping, x is not N, rho.hcp.max<=12, rho.x>=5
     4C     Leaping Michaels: five or more clubs and a five-card major  [alert]
            shows C>=5, H>=5 | S>=5, losers<=5
            when  x is D
     4D     Leaping Michaels: five or more in each major  [alert]  [artificial]
            shows H>=5, S>=5, losers<=5
            when  x is D
     4C     Leaping Michaels: five or more clubs and spades  [alert]
            shows C>=5, S>=5, losers<=5
            when  x is H
     4D     Leaping Michaels: five or more diamonds and spades  [alert]
            shows D>=5, S>=5, losers<=5
            when  x is H
     4C     Leaping Michaels: five or more clubs and hearts  [alert]
            shows C>=5, H>=5, losers<=5
            when  x is S
     4D     Leaping Michaels: five or more diamonds and hearts  [alert]
            shows D>=5, H>=5, losers<=5
            when  x is S

   after (3x)
     when nlm, x is not N, rho.hcp.max<=12, rho.x>=5
     4D     Non-Leaping Michaels: diamonds and a major, five-five  [alert]
            shows D>=5, H>=5 | S>=5, losers<=5
            when  x is C
     4C     Non-Leaping Michaels: clubs and a major, five-five  [alert]
            shows C>=5, H>=5 | S>=5, losers<=5
            when  x is D
     4C     Non-Leaping Michaels: five or more clubs and spades  [alert]
            shows C>=5, S>=5, losers<=5
            when  x is H
     4D     Non-Leaping Michaels: five or more diamonds and spades  [alert]
            shows D>=5, S>=5, losers<=5
            when  x is H
     4C     Non-Leaping Michaels: five or more clubs and hearts  [alert]
            shows C>=5, H>=5, losers<=5
            when  x is S
     4D     Non-Leaping Michaels: five or more diamonds and hearts  [alert]
            shows D>=5, H>=5, losers<=5
            when  x is S

   after (2x) 3x (P) | (2x) P (P) 3x (P) | (2x) P (3x) 4x (P) | (3x) 4x (P)
     when x is not N, mich_play | mich_minors | mich_quasi | mich_majors | nlm
     4H     Game in hearts: four or more, or three and 8+ HCP
            shows H>=3, hcp>=8 | H>=4
            when  partner.H>=5
     4S     Game in spades: four or more, or three and 8+ HCP
            shows S>=3, hcp>=8 | S>=4
            when  partner.S>=5
     3N     To play: {x} held, no major fit, 10+
            shows hcp>=10, stop(x)
            when  H<=2 | maybe partner.H<=4, S<=2 | maybe partner.S<=4
     cheapest(H) Preference: three or more hearts
            shows H>=3
            when  partner.H>=5
     cheapest(S) Preference: three or more spades
            shows S>=3
            when  partner.S>=5
     4H     Pass or correct: play in partner's major  [alert]
            when  maybe partner.H<=4, maybe partner.S<=4, maybe partner.H>=5, maybe partner.S>=5, maybe partner.C<=4 | C<=2, maybe partner.D<=4 | D<=2
     cheapest(C) Pass or correct: play in partner's minor  [alert]
            when  maybe partner.C<=4, maybe partner.D<=4, maybe partner.C>=5, maybe partner.D>=5
     cheapest(C) Partner's clubs
            shows C>=3
            when  partner.C>=5
     cheapest(D) Partner's diamonds
            shows D>=3
            when  partner.D>=5
     cheapest(H) Preference: hearts
            when  partner.H>=5, partner.S>=5
     cheapest(S) Preference: spades
            when  partner.H>=5, partner.S>=5

   after (2x) 4y (P)
     when leaping, x is not N, y is C | y is D, y is not x
     4H     Game in hearts: four or more, or three and 8+ HCP
            shows H>=3, hcp>=8 | H>=4
            when  partner.H>=5
     4S     Game in spades: four or more, or three and 8+ HCP
            shows S>=3, hcp>=8 | S>=4
            when  partner.S>=5
     3N     To play: {x} held, no major fit, 10+
            shows hcp>=10, stop(x)
            when  H<=2 | maybe partner.H<=4, S<=2 | maybe partner.S<=4
     cheapest(H) Preference: three or more hearts
            shows H>=3
            when  partner.H>=5
     cheapest(S) Preference: three or more spades
            shows S>=3
            when  partner.S>=5
     4H     Pass or correct: play in partner's major  [alert]
            when  maybe partner.H<=4, maybe partner.S<=4, maybe partner.H>=5, maybe partner.S>=5, maybe partner.C<=4 | C<=2, maybe partner.D<=4 | D<=2
     cheapest(C) Pass or correct: play in partner's minor  [alert]
            when  maybe partner.C<=4, maybe partner.D<=4, maybe partner.C>=5, maybe partner.D>=5
     cheapest(C) Partner's clubs
            shows C>=3
            when  partner.C>=5
     cheapest(D) Partner's diamonds
            shows D>=3
            when  partner.D>=5
     cheapest(H) Preference: hearts
            when  partner.H>=5, partner.S>=5
     cheapest(S) Preference: spades
            when  partner.H>=5, partner.S>=5

   after (3x) 4y (P)
     when nlm, x is not N, y is C | y is D, y is not x
     4H     Game in hearts: four or more, or three and 8+ HCP
            shows H>=3, hcp>=8 | H>=4
            when  partner.H>=5
     4S     Game in spades: four or more, or three and 8+ HCP
            shows S>=3, hcp>=8 | S>=4
            when  partner.S>=5
     3N     To play: {x} held, no major fit, 10+
            shows hcp>=10, stop(x)
            when  H<=2 | maybe partner.H<=4, S<=2 | maybe partner.S<=4
     cheapest(H) Preference: three or more hearts
            shows H>=3
            when  partner.H>=5
     cheapest(S) Preference: three or more spades
            shows S>=3
            when  partner.S>=5
     4H     Pass or correct: play in partner's major  [alert]
            when  maybe partner.H<=4, maybe partner.S<=4, maybe partner.H>=5, maybe partner.S>=5, maybe partner.C<=4 | C<=2, maybe partner.D<=4 | D<=2
     cheapest(C) Pass or correct: play in partner's minor  [alert]
            when  maybe partner.C<=4, maybe partner.D<=4, maybe partner.C>=5, maybe partner.D>=5
     cheapest(C) Partner's clubs
            shows C>=3
            when  partner.C>=5
     cheapest(D) Partner's diamonds
            shows D>=3
            when  partner.D>=5
     cheapest(H) Preference: hearts
            when  partner.H>=5, partner.S>=5
     cheapest(S) Preference: spades
            when  partner.H>=5, partner.S>=5

   after (any auction)
     when asked poc_major
     P      Hearts: my major
            shows H>=5
     cheapest(S) Spades: my major
            shows S>=5

   after (any auction)
     when asked poc_minor
     P      Clubs: my minor
            shows C>=5
     cheapest(D) Diamonds: my minor
            shows D>=5

   after (1M)
     when djc_major is gambling | djc_major is strong
     3{M}   Jump cue bid: a solid seven-card suit, asks for a {M} stopper  [alert]  [artificial]
            shows (C>=7, quality(C)>=excellent) | (D>=7, quality(D)>=excellent) | (M is H, S>=7, quality(S)>=excellent) | (M is S, H>=7, quality(H)>=excellent)
            when  !stop(M), djc_major is gambling | controls>=6

   after (1m)
     when djc_minor is gambling
     3{m}   Jump cue bid: a solid seven-card suit, asks for a {m} stopper  [alert]  [artificial]
            shows (C>=7, quality(C)>=excellent, m is D) | (D>=7, quality(D)>=excellent, m is C) | (H>=7, quality(H)>=excellent) | (S>=7, quality(S)>=excellent)
            when  !stop(m)

   after (1m)
     when djc_minor is majors
     3{m}   Jump cue bid: five or more in each major, preemptive  [alert]  [artificial]
            shows H>=5, S>=5, hcp<=10

   after (1m)
     when djc_minor is preempt
     3{m}   Jump cue bid: a preempt in {m}, seven or more, up to 10 HCP  [alert]
            shows m>=7, hcp<=10, quality(m)>=good

   after (any auction)
     when asked jump_cue_stopper
     3N     Their suit is held: to play
            shows stop(they.strain)
     4C     No stopper: pass or correct  [alert]

   after (any auction)
     when asked poc_long
     P      Clubs: my suit
            shows C>=7
     cheapest(D) Diamonds: my suit
            shows D>=7
     cheapest(H) Hearts: my suit
            shows H>=7
     cheapest(S) Spades: my suit
            shows S>=7

   after (1m) 3m (P)
     when djc_minor is majors
     cheapest(H) Preference: hearts
     cheapest(S) Preference: spades
     4H     Game in hearts: four or more, or three and 12+
            shows H>=4 | (H>=3, hcp>=12)
     4S     Game in spades: four or more, or three and 12+
            shows S>=4 | (S>=3, hcp>=12)

== vs-1nt: Over their 1NT: what every defence shares
   file: conventions/competitive/vs-1nt.bid
   needs: base
   skills: competitive_bidding/defense_vs_1nt

   after (1N)
     when !def is other | dont_play
     3S     Preemptive: seven spades
            shows S>=7, hcp>=4, hcp+length_points<=11
     3H     Preemptive: seven hearts
            shows H>=7, hcp>=4, hcp+length_points<=11
     3D     Preemptive: seven diamonds
            shows D>=7, hcp>=4, hcp+length_points<=11
     3C     Preemptive: seven clubs
            shows C>=7, hcp>=4, hcp+length_points<=11

   after (1N) | (1N) P (P)
     P      No overcall

   after (any auction)
     when asked nt_majors, rho.last=P | rho.last=X
     P      Hearts: to play
            shows H>=S
            when  partner.last=2H
     2H     Preference: hearts
            shows H>=S
     2S     Preference: spades
            shows S>H
     3H     Invitational: four hearts
            shows H>=4, H>=S, tp(H)=10..12
     3S     Invitational: four spades
            shows S>=4, S>H, tp(S)=10..12
     4H     Game in hearts
            shows H>=3, H>=S, tp(H)>=13
     4S     Game in spades
            shows S>=3, S>H, tp(S)>=13
     P      Long clubs: to play
            shows C>=6, H<=2, S<=2
            when  partner.last=2C
     P      Long diamonds: to play
            shows D>=6, H<=2, S<=2
            when  partner.last=2D
     3C     Long clubs: to play
            shows C>=6, H<=2, S<=2
            when  !partner.last=2C
     3D     Long diamonds: to play
            shows D>=6, H<=2, S<=2
            when  !partner.last=2D

   after (any auction)
     when asked nt_mm(M), rho.last=P | rho.last=X
     P      {M} to play
            shows M>=2
     3{M}   Invitational raise
            shows M>=3, tp(M)=10..12
     4{M}   Game in {M}
            shows M>=3, tp(M)>=13
     2N     Which is your minor?  [alert]  [artificial]
            shows M<=1
     2S     Six or more spades: to play
            shows S>=6, M<=2
            when  M is H
     3H     Six or more hearts: to play
            shows H>=6, M<=2
            when  M is S
     3C     Six or more clubs: to play
            shows C>=6, M<=1
     3D     Six or more diamonds: to play
            shows D>=6, M<=1

   after (any auction)
     when asked nt_which_minor, rho.last=P | rho.last=X
     3C     My minor is clubs
            shows C>=4, C>=D
     3D     My minor is diamonds
            shows D>=4, D>C

   after (any auction)
     when asked nt_minors, rho.last=P | rho.last=X
     3C     Preference: clubs
            shows C>D
     3D     Preference: diamonds
            shows D>=C
     5C     Game in clubs
            shows C>=4, C>D, tp(C)>=14
     5D     Game in diamonds
            shows D>=4, D>=C, tp(D)>=14
     3H     Six or more hearts: to play
            shows H>=6, C<=2, D<=2
     3S     Six or more spades: to play
            shows S>=6, C<=2, D<=2

   after (any auction)
     when asked nt_pc(x), rho.last=P | rho.last=X
     P      Support for {x}: to play
            shows x>=3
     2D     Which is your other suit?  [alert]
            shows x<=2
            when  x is C
     2H     Pass or correct: which is your other suit?  [alert]
            shows x<=2
            when  x is D

   after (any auction)
     when asked nt_other, rho.last=P | rho.last=X
     P      My other suit is diamonds
            shows D>=4
            when  partner.last=2D
     P      My other suit is hearts
            shows H>=4
            when  partner.last=2H
     2H     My other suit is hearts
            shows H>=4
     2S     My other suit is spades
            shows S>=4

   after (any auction)
     when asked nt_one(x), rho.last=P | rho.last=X
     3{x}   Invitational raise
            shows x>=2, hcp=11..12
            when  x is H | x is S
     4{x}   Game in {x}
            shows x>=2, hcp>=13
            when  x is H | x is S
     P      No further bid

   after (any auction)
     when asked nt_penalty, rho.last=P | rho.last=XX
     P      Leaves the double in
     2C     Weak: five or more clubs
            shows C>=5, hcp<=4
     2D     Weak: five or more diamonds
            shows D>=5, hcp<=4
     2H     Weak: five or more hearts
            shows H>=5, hcp<=4
     2S     Weak: five or more spades
            shows S>=5, hcp<=4

== vs-preempts: Defence against preempts
   file: conventions/competitive/vs-preempts.bid
   needs: base
   skills: competitive_bidding/defense_vs_preempts, competitive_bidding/takeout_doubles, competitive_bidding/lebensohl

   after (2x)
     when x is not N, rho.hcp.max<=12
     X      Takeout: the unbid suits and 12+, or any 17+
            shows hcp+length_points>=12, (S>=3 | x is S, H>=3 | x is H, D>=3 | x is D, C>=3 | x is C, x<=2) | (hcp>=17, x<=3)
     cheapest(S) Overcall: five or more spades, 12-16
            shows S>=5, S>=H, S>=D, S>=C, hcp+length_points>=12, hcp<=16
            when  x is not S, quality(S)>=good | top5(S)>=3 | S>=6 | hcp+length_points>=13, cheapest_rank(S)<=13 | hcp+length_points>=13
     cheapest(H) Overcall: five or more hearts, 12-16
            shows H>=5, H>S, H>=D, H>=C, hcp+length_points>=12, hcp<=16
            when  x is not H, quality(H)>=good | top5(H)>=3 | H>=6 | hcp+length_points>=13, cheapest_rank(H)<=13 | hcp+length_points>=13
     cheapest(D) Overcall: five or more diamonds, 12-16
            shows D>=5, D>S, D>H, D>=C, hcp+length_points>=12, hcp<=16
            when  x is not D, quality(D)>=good | top5(D)>=3 | D>=6 | hcp+length_points>=13, cheapest_rank(D)<=13 | hcp+length_points>=13
     cheapest(C) Overcall: five or more clubs, 12-16
            shows C>=5, C>S, C>H, C>D, hcp+length_points>=12, hcp<=16
            when  x is not C, quality(C)>=good | top5(C)>=3 | C>=6 | hcp+length_points>=13, cheapest_rank(C)<=13 | hcp+length_points>=13
     jump(S) Strong jump overcall: six or more spades, 15-16
            shows S>=6, hcp=15..16
            when  x is not S
     jump(H) Strong jump overcall: six or more hearts, 15-16
            shows H>=6, H>S, hcp=15..16
            when  x is not H, x is not S
     cheapest(N) 15-17 balanced, {x} stopped, no five-card major
            shows balanced, hcp=15..17, S<=4, H<=4
            when  stop(x)
     4S     Seven or more spades: game
            shows S>=7, hcp+length_points>=13
            when  x is not S
     4H     Seven or more hearts: game
            shows H>=7, H>S, hcp+length_points>=13
            when  x is not H
     P      No overcall

   after (2x) P (P)
     when x is not N, lho.hcp.max<=12
     X      Reopening double: 12+, short in {x}, the unbid suits
            shows hcp+length_points>=12, (S>=3 | x is S, H>=3 | x is H, D>=3 | x is D, C>=3 | x is C, x<=2) | (hcp>=17, x<=3)
     cheapest(S) Balancing: five or more spades
            shows S>=5, S>=H, S>=D, S>=C, hcp+length_points>=9, hcp<=16
            when  x is not S, cheapest_rank(S)<=13 | hcp+length_points>=11
     cheapest(H) Balancing: five or more hearts
            shows H>=5, H>S, H>=D, H>=C, hcp+length_points>=9, hcp<=16
            when  x is not H, cheapest_rank(H)<=13 | hcp+length_points>=11
     cheapest(D) Balancing: five or more diamonds
            shows D>=5, D>S, D>H, D>=C, hcp+length_points>=9, hcp<=16
            when  x is not D, cheapest_rank(D)<=13 | hcp+length_points>=11
     cheapest(C) Balancing: five or more clubs
            shows C>=5, C>S, C>H, C>D, hcp+length_points>=9, hcp<=16
            when  x is not C, cheapest_rank(C)<=13 | hcp+length_points>=11
     jump(S) Six or more spades, 15-16
            shows S>=6, hcp=15..16
            when  x is not S, cheapest_rank(S)<=13
     jump(H) Six or more hearts, 15-16
            shows H>=6, H>S, hcp=15..16
            when  x is not H, cheapest_rank(H)<=13, !rub | cheapest_rank(x)>18
     cheapest(N) 16-18 balanced, {x} stopped
            shows balanced, hcp=16..18, S<=4, H<=4
            when  stop(x)
     P      Nothing to reopen with

   after (3x)
     when x is not N, rho.hcp.max<=12
     X      Takeout: 12+, short in {x}, the unbid suits, or 17+
            shows hcp+length_points>=12, (S>=3 | x is S, H>=3 | x is H, D>=3 | x is D, C>=3 | x is C, x<=2) | (hcp>=17, x<=3)
     cheapest(S) Overcall: five or more spades
            shows S>=5, S>=H, S>=D, S>=C, hcp+length_points>=12, hcp<=17
            when  x is not S, quality(S)>=good | top5(S)>=3 | S>=6 | hcp+length_points>=14, cheapest_rank(S)<=18 | hcp+length_points>=14
     cheapest(H) Overcall: five or more hearts
            shows H>=5, H>S, H>=D, H>=C, hcp+length_points>=12, hcp<=17
            when  x is not H, quality(H)>=good | top5(H)>=3 | H>=6 | hcp+length_points>=14, cheapest_rank(H)<=18 | hcp+length_points>=14
     cheapest(D) Overcall: five or more diamonds
            shows D>=5, D>S, D>H, D>=C, hcp+length_points>=12, hcp<=17
            when  x is not D, quality(D)>=good | top5(D)>=3 | D>=6 | hcp+length_points>=14, cheapest_rank(D)<=18 | hcp+length_points>=14
     cheapest(C) Overcall: five or more clubs
            shows C>=5, C>S, C>H, C>D, hcp+length_points>=12, hcp<=17
            when  x is not C, quality(C)>=good | top5(C)>=3 | C>=6 | hcp+length_points>=14, cheapest_rank(C)<=18 | hcp+length_points>=14
     3N     17-21 with {x} stopped
            shows hcp=17..21, S<=4, H<=4
            when  stop(x)
     4S     Seven or more spades: game
            shows S>=7, hcp+length_points>=13
            when  x is not S
     4H     Seven or more hearts: game
            shows H>=7, H>S, hcp+length_points>=13
            when  x is not H
     P      No overcall

   after (3x) P (P)
     when x is not N, lho.hcp.max<=12
     X      Reopening double: 12+, short in {x}, the unbid suits
            shows hcp+length_points>=12, (S>=3 | x is S, H>=3 | x is H, D>=3 | x is D, C>=3 | x is C, x<=1) | (hcp>=17, x<=3)
     cheapest(S) Balancing: five or more spades
            shows S>=5, S>=H, S>=D, S>=C, hcp+length_points>=11, hcp<=17
            when  x is not S, cheapest_rank(S)<=18 | hcp+length_points>=13
     cheapest(H) Balancing: five or more hearts
            shows H>=5, H>S, H>=D, H>=C, hcp+length_points>=11, hcp<=17
            when  x is not H, cheapest_rank(H)<=18 | hcp+length_points>=13
     cheapest(D) Balancing: five or more diamonds
            shows D>=5, D>S, D>H, D>=C, hcp+length_points>=11, hcp<=17
            when  x is not D, cheapest_rank(D)<=18 | hcp+length_points>=13
     cheapest(C) Balancing: five or more clubs
            shows C>=5, C>S, C>H, C>D, hcp+length_points>=11, hcp<=17
            when  x is not C, cheapest_rank(C)<=18 | hcp+length_points>=13
     3N     17-20 with {x} stopped
            shows hcp=17..20, S<=4, H<=4
            when  stop(x)
     P      Nothing to reopen with

   after (4x)
     when x is H, rho.hcp.max<=12
     X      Takeout: 14+, short in hearts
            shows hcp+length_points>=14, x<=2, S>=3
     4S     Five or more spades, 14+
            shows S>=5, hcp+length_points>=14
     cheapest(D) Five or more diamonds, 16+
            shows D>=5, D>=C, hcp+length_points>=16
     cheapest(C) Five or more clubs, 16+
            shows C>=5, C>D, hcp+length_points>=16
     P      No overcall

   after (4x)
     when x is S, rho.hcp.max<=12
     X      Values: 17+, for penalty
            shows hcp>=17, x>=2
     cheapest(D) Five or more diamonds, 16+
            shows D>=5, D>=C, hcp+length_points>=16
     cheapest(H) Five or more hearts, 16+
            shows H>=5, H>=D, H>=C, hcp+length_points>=16
     cheapest(C) Five or more clubs, 16+
            shows C>=5, C>D, hcp+length_points>=16
     P      No overcall

   after (4x) P (P)
     when x is H, lho.hcp.max<=12
     X      Reopening double: 12+, no hearts
            shows hcp+length_points>=12, x<=1
     4S     Five or more spades, 13+
            shows S>=5, hcp+length_points>=13
     cheapest(D) Five or more diamonds, 15+
            shows D>=5, D>=C, hcp+length_points>=15
     cheapest(C) Five or more clubs, 15+
            shows C>=5, C>D, hcp+length_points>=15
     P      Nothing to reopen with

   after (4x) X (P) | (4x) P (P) X (P)
     when x is H | x is S
     4S     Five or more spades
            shows S>=5
            when  x is H
     P      Leaves the double in

   after (4x)
     when x is C | x is D, rho.hcp.max<=12 | rho.named(x)
     X      Takeout: 14+, short in {x}, or 16+
            shows (S>=3, H>=3, D>=3 | x is D, C>=3 | x is C, x<=2, hcp+length_points>=14) | (hcp>=16, x<=3)
     4S     Five or more spades, 14+
            shows S>=5, S>=H, hcp+length_points>=14
     4H     Five or more hearts, 14+
            shows H>=5, H>S, hcp+length_points>=14
     cheapest(D) Five or more diamonds, 16+
            shows D>=5, S<=4, H<=4, hcp+length_points>=16
            when  x is C
     cheapest(C) Five or more clubs, 16+
            shows C>=5, S<=4, H<=4, hcp+length_points>=16
            when  x is D
     P      No overcall

   after (4x) P (P)
     when x is C | x is D, lho.hcp.max<=12 | lho.named(x)
     X      Reopening double: 12+, short in {x}, or 16+
            shows (S>=3, H>=3, D>=3 | x is D, C>=3 | x is C, x<=2, hcp+length_points>=12) | (hcp>=16, x<=3)
     4S     Five or more spades, 13+
            shows S>=5, S>=H, hcp+length_points>=13
     4H     Five or more hearts, 13+
            shows H>=5, H>S, hcp+length_points>=13
     P      Nothing to reopen with

   after (4x) X (P) | (4x) P (P) X (P)
     when x is C | x is D
     4H     Four or more hearts
            shows H>=4, H>=S
     4S     Four or more spades
            shows S>=4, S>H
     cheapest(D) Five or more diamonds
            shows D>=5, S<=3, H<=3, x<=2
            when  x is C
     cheapest(C) Five or more clubs
            shows C>=5, S<=3, H<=3, x<=2
            when  x is D
     P      Leaves the double in

   after (2x) P (4x) | (2x) P (5x) | (3x) P (4x) | (3x) P (5x)
     when x is not N, lho.hcp.max<=12
     cheapest(S) Six or more spades, 16+
            shows S>=6, S>=H, hcp+length_points>=16
            when  x is not S, cheapest_rank(S)<=23 | hcp+length_points>=18
     cheapest(H) Six or more hearts, 16+
            shows H>=6, H>S, hcp+length_points>=16
            when  x is not H, cheapest_rank(H)<=23 | hcp+length_points>=18
     cheapest(D) Six or more diamonds, 18+
            shows D>=6, D>S, D>H, hcp+length_points>=18
            when  x is not D
     cheapest(C) Six or more clubs, 18+
            shows C>=6, C>S, C>H, C>D, hcp+length_points>=18
            when  x is not C
     X      Takeout: 16+, short in {x}
            shows hcp+length_points>=16, x<=1, S>=3 | x is S, H>=3 | x is H, D>=3 | x is D, C>=3 | x is C

   after (2x) P (4x) X (P) | (2x) P (5x) X (P) | (3x) P (4x) X (P) | (3x) P (5x) X (P)
     when x is not N
     cheapest(S) Five or more spades and no defence
            shows S>=5, S>=H, x<=1
            when  x is not S
     cheapest(H) Five or more hearts and no defence
            shows H>=5, H>S, x<=1
            when  x is not H
     P      Leaves the double in

   after (2x) X (P) | (3x) X (P) | (2x) P (P) X (P) | (3x) P (P) X (P)
     when x is not C
     P      Penalty: five of their suit with two top honours
            shows x>=5, quality(x)>=good | top5(x)>=3
     P      Penalty: four of their suit, a flat hand and 10+
            shows x=4, hcp>=10, stop(x), S<=4, H<=4, D<=4, C<=4
     cheapest(x) Cue bid: 13+, forcing to game  [alert]  [artificial]
            shows hcp+length_points>=13
            when  !(leb | rub) | cheapest_rank(x)>18
     4S     Game: four or more spades, 11+
            shows S>=4, S>=H, hcp+length_points=11..12
            when  x is not S
     4H     Game: four or more hearts, 11+
            shows H>=4, H>S, hcp+length_points=11..12
            when  x is not H
     jump(S) Invitational: five or more spades, 8-10
            shows S>=5, S>=H, hcp+length_points=8..10
            when  x is not S, cheapest_rank(S)<=13, !rub | cheapest_rank(x)>18
     jump(H) Invitational: five or more hearts, 8-10
            shows H>=5, H>S, hcp+length_points=8..10
            when  x is not H, cheapest_rank(H)<=13, !rub | cheapest_rank(x)>18
     cheapest(N) 11-12 with {x} stopped
            shows hcp+length_points=11..12, S<=3 | x is S, H<=3 | x is H
            when  stop(x), cheapest_rank(x)<14, !(leb | rub) | cheapest_rank(x)>18
     3N     Game with {x} stopped, no four-card major
            shows hcp+length_points>=13 | (hcp+length_points>=11, cheapest_rank(x)>=14), S<=3 | x is S, H<=3 | x is H
            when  stop(x), !(leb | rub) | cheapest_rank(x)>18
     cheapest(S) Four or more spades, 0-10
            shows S>=4, S>=H, hcp+length_points<=10
            when  x is not S, !(leb | rub) | cheapest_rank(x)>18 | cheapest_rank(S)<=13
     cheapest(H) Four or more hearts, 0-10
            shows H>=4, H>S, hcp+length_points<=10
            when  x is not H, !(leb | rub) | cheapest_rank(x)>18 | cheapest_rank(H)<=13
     cheapest(D) Four or more diamonds, 0-10, no four-card major
            shows D>=4, D>=C, hcp+length_points<=10, S<=3 | x is S, H<=3 | x is H
            when  x is not D, !(leb | rub) | cheapest_rank(x)>18 | cheapest_rank(D)<=13
     cheapest(C) Four or more clubs, 0-10, no four-card major
            shows C>=4, C>D | x is D, hcp+length_points<=10, S<=3 | x is S, H<=3 | x is H
            when  x is not C, !(leb | rub) | cheapest_rank(x)>18 | cheapest_rank(C)<=13
     cheapest(S) No four-card suit: spades
            when  x is not S, S>=H, S>=D, S>=C, !(leb | rub) | cheapest_rank(x)>18 | cheapest_rank(S)<=13
     cheapest(H) No four-card suit: hearts
            when  x is not H, H>=D, H>=C, !(leb | rub) | cheapest_rank(x)>18 | cheapest_rank(H)<=13
     cheapest(D) No four-card suit: diamonds
            when  x is not D, D>=C, !(leb | rub) | cheapest_rank(x)>18 | cheapest_rank(D)<=13
     cheapest(C) No four-card suit: clubs
            when  x is not C, !(leb | rub) | cheapest_rank(x)>18 | cheapest_rank(C)<=13

   after (2x) X (P) 2y (P) | (2x) X (P) 3y (P) | (3x) X (P) 3y (P) | (3x) X (P) 4y (P) | (2x) P (P) X (P) 2y (P) | (2x) P (P) X (P) 3y (P)
     when y is not x, x is not C
     P      Minimum double
            shows hcp<=16
     4{y}   Game: four-card support, 17+
            shows y>=4, hcp>=17
            when  y is H | y is S
     cheapest(y) Raise: four-card support, 17+
            shows y>=4, hcp>=17
     3N     18+ with {x} stopped
            shows hcp>=18, stop(x)
     cheapest(S) 17+ and five or more spades
            shows S>=5, hcp>=17
            when  x is not S, y is not S
     cheapest(H) 17+ and five or more hearts
            shows H>=5, S<=4, hcp>=17
            when  x is not H, y is not H

   after (2x) X (P) 2N (P)
     when x is not C, !leb, !rub
     3N     Accepts the invitation: 14+
            shows hcp>=14
     P      Declines
            shows hcp<=13

   after (2x) X (P) | (2x) P (P) X (P)
     when x is not C, leb, !rub
     2N     Lebensohl: relay to 3C, weak or game values  [alert]  [artificial]
            shows (hcp<=8, C>=4 | (D>=4, x is H | x is S) | (H>=4, x is S), S<=3 | x is S | cheapest_rank(S)>=15, H<=3 | x is H | cheapest_rank(H)>=15) | (hcp>=13, stop(x), S<=4 | x is S, H<=4 | x is H)
     cheapest(x) Cue bid: game values, a four-card major, no {x} stopper  [alert]  [artificial]
            shows hcp>=13, (S=4, x is not S) | (H=4, x is not H), S<=4 | x is S, H<=4 | x is H
            when  !stop(x)
     3N     Game values, no four-card major, no stopper in {x}
            shows hcp>=13, S<=3 | x is S, H<=3 | x is H
            when  !stop(x)
     cheapest(S) Constructive: four or more spades, 9-12
            shows S>=4, S>=H, hcp=9..12
            when  x is not S, cheapest_rank(S)>=15
     cheapest(H) Constructive: four or more hearts, 9-12
            shows H>=4, H>S, hcp=9..12
            when  x is not H, cheapest_rank(H)>=15
     cheapest(D) Constructive: four or more diamonds, 9-12
            shows D>=4, D>=C, hcp=9..12, S<=3 | x is S, H<=3 | x is H
            when  x is not D, cheapest_rank(D)>=15
     cheapest(C) Constructive: four or more clubs, 9-12
            shows C>=4, C>D | x is D, hcp=9..12, S<=3 | x is S, H<=3 | x is H
            when  x is not C, cheapest_rank(C)>=15
     4S     Game: five or more spades
            shows S>=5, S>=H, hcp+length_points>=11
            when  x is not S
     4H     Game: five or more hearts
            shows H>=5, H>S, hcp+length_points>=11
            when  x is not H
     P      Leaves the double in: five or more {x}
            shows x>=5, hcp<=8
     2N     Lebensohl: relay to 3C  [alert]  [artificial]

   after (2x) X (P) 2N (P) | (2x) P (P) X (P) 2N (P)
     when x is not C, leb, !rub
     3N     Game: 19+ with {x} stopped
            shows hcp>=19, stop(x)
     3C     Lebensohl: as asked  [alert]  [artificial]

   after (2x) X (P) 2N (P) 3C (P) | (2x) P (P) X (P) 2N (P) 3C (P)
     when x is not C, leb, !rub
     P      Weak, clubs
            shows C>=4, hcp<=8
     cheapest(D) Weak, diamonds: to play
            shows D>=4, D>C, hcp<=8
            when  x is not D
     cheapest(H) Weak, hearts: to play
            shows H>=4, H>D, H>C, hcp<=8
            when  x is S
     cheapest(x) Slow cue: game values, four of an unbid major, {x} stopped  [alert]  [artificial]
            shows hcp>=13, stop(x), (S=4, x is not S) | (H=4, x is not H)
     3N     Slow 3NT: game values with {x} stopped, no four-card major
            shows hcp>=13, stop(x)
     P      Weak: to play in clubs

   after (2x) X (P) 3x (P) | (2x) P (P) X (P) 3x (P) | (2x) X (P) 2N (P) 3C (P) 3x (P) | (2x) P (P) X (P) 2N (P) 3C (P) 3x (P)
     when x is not C, leb, !rub
     cheapest(H) Four hearts
            shows H>=4
            when  x is not H
     cheapest(S) Four spades
            shows S>=4
            when  x is not S
     3N     No four-card major
     cheapest(D) No major, no stopper: diamonds
            shows D>=4, D>=C
            when  x is not D

   after (2x) 2y (P) | (2x) 3y (P) | (3x) 3y (P) | (3x) 4y (P) | (2x) P (P) 2y (P) | (2x) P (P) 3y (P)
     when y is not x, x is not C
     4{y}   Game: three-card support, 12+
            shows y>=3, hcp+length_points>=12
            when  y is H | y is S
     cheapest(y) Raise: three-card support, 8-11
            shows y>=3, hcp+length_points=8..11
     3N     Game: 12+ with {x} stopped
            shows hcp+length_points>=12, stop(x), y<=2
     P      Nothing to add

   after (2x) 2N (P)
     when x is not C
     3N     Game: 9+
            shows hcp>=9, S<=5, H<=5
     4S     Game: six or more spades, 8+
            shows S>=6, hcp>=8
            when  x is not S
     4H     Game: six or more hearts, 8+
            shows H>=6, hcp>=8
            when  x is not H
     P      No game
            shows hcp<=8

   after 2x (X) | 2x (2y) | 2x (3y) | 2x (2N) | 3x (X) | 3x (3y) | 3x (4y) | 3x (3N) | 4x (X) | 4x (4y) | 4x (5y)
     when x is not N
     P      No further bid

   after 2x (X) P (*) | 2x (2y) P (*) | 2x (3y) P (*) | 2x (2N) P (*) | 3x (X) P (*) | 3x (3y) P (*) | 3x (4y) P (*) | 4x (X) P (*) | 4x (4y) P (*) | 4x (5y) P (*)
     when x is not N
     P      No further bid

== vs-takeout-double: Raises over their takeout double: Jordan 2NT and BROMAD
   file: conventions/competitive/vs-takeout-double.bid
   needs: base, after-interference
   skills: competitive_bidding/jordan_2nt, competitive_bidding/bromad

   after 1M (X)
     when jordan, !passed_hand | !drury_comp | !(drury | rdrury)
     2N     Jordan 2NT: limit raise or better, four or more {M}  [alert]  [artificial]
            shows M>=4, tp(M)>=10
            when  system is not brill
     2N     Jordan 2NT: limit raise or better, three or more {M}  [alert]  [artificial]
            shows M>=3, tp(M)>=10
            when  system is brill
     3{M}   Preemptive raise: four or more {M}, up to 7
            shows M>=4, tp(M)<=7
            when  !bromad

   after 1M (X)
     when bromad, !tfr, !passed_hand | !drury_comp | !(drury | rdrury)
     2C     BROMAD: constructive raise, three {M}, 7-9  [alert]  [artificial]
            shows M=3, tp(M)>=7, tp(M)<=9
     2D     BROMAD: limit raise or better, three {M}  [alert]  [artificial]
            shows M=3, tp(M)>=10
     3C     BROMAD: constructive raise, four or more {M}, 7-9  [alert]  [artificial]
            shows M>=4, tp(M)>=7, tp(M)<=9
     2{M}   BROMAD: preemptive raise, three {M}, up to 6
            shows M=3, tp(M)<=6
     3{M}   BROMAD: preemptive raise, four or more {M}, up to 6
            shows M>=4, tp(M)<=6

   after 1M (X)
     when bromad, !jordan, !tfr
     3D     BROMAD: limit raise or better, four or more {M}  [alert]  [artificial]
            shows M>=4, tp(M)>=10
     2N     BROMAD: weak, five-five or better in the minors  [alert]  [artificial]
            shows C>=5, D>=5, hcp<=6, M<=2

   after 1M (X) 2C (P) | 1M (X) 2C (XX)
     when bromad
     4{M}   Game: 17+
            shows tp(M)>=17
     3{M}   Invites game: 15-16
            shows tp(M)>=15, tp(M)<=16
     2{M}   Minimum: nothing more

   after 1M (X) 3C (P) | 1M (X) 3C (XX)
     when bromad
     4{M}   Game: 15+
            shows tp(M)>=15
     3{M}   Minimum: nothing more

   after 1M (X) 2C (P) 3M (P)
     when bromad
     4{M}   Accepts: the top of the constructive raise
            shows tp(M)>=9
     P      Declines

   after 1M (X) 2N (P) 3M (P) | 1M (X) 2D (P) 2M (P) | 1M (X) 3D (P) 3M (P)
     when jordan | bromad
     4{M}   Game: 13+ opposite opener's minimum
            shows tp(M)>=13
     P      Limit raise only

== western-cue: Western cue bid: three of their suit asks for a stopper for 3NT
   file: conventions/competitive/western-cue.bid
   needs: base
   skills: bidding_conventions/western_cuebid
   define wc_values = points+partner.points.min>=25
   define wc_no_major_fit = we.fit(S).min<=7, we.fit(H).min<=7

   after (any auction)
     when western, they.bid, !asked, !answered western, me.bids>=1, partner.bids>=1, we.trump is none | we.trump is C | we.trump is D
     cheapest(C) Western cue: a club stopper for 3NT?  [alert]  [artificial]
            when  they.strain is C, cheapest_rank(C)<=15, !stop(C), wc_values, wc_no_major_fit
     cheapest(D) Western cue: a diamond stopper for 3NT?  [alert]  [artificial]
            when  they.strain is D, cheapest_rank(D)<=16, !stop(D), wc_values, wc_no_major_fit
     cheapest(H) Western cue: a heart stopper for 3NT?  [alert]  [artificial]
            when  they.strain is H, cheapest_rank(H)<=17, !stop(H), wc_values, wc_no_major_fit
     cheapest(S) Western cue: a spade stopper for 3NT?  [alert]  [artificial]
            when  they.strain is S, cheapest_rank(S)<=18, !stop(S), wc_values, wc_no_major_fit

   after (any auction)
     when western, asked western(y)
     3N     A stopper in {y}: 3NT
            shows stop(y)
     cheapest(C) No stopper in {y}: clubs
            when  y is not C, C>=5 | we.fit(C).min>=7
     cheapest(D) No stopper in {y}: diamonds
            when  y is not D, D>=5 | we.fit(D).min>=7
     cheapest(H) No stopper in {y}: hearts
            when  y is not H, H>=5 | we.fit(H).min>=7
     cheapest(S) No stopper in {y}: spades
            when  y is not S, S>=5 | we.fit(S).min>=7
     3N     3NT: no stopper, no suit to show

   after (any auction)
     when western, answered western(y)
     P      Plays 3NT
            when  partner.last=3N
     4H     Game in the heart fit
            when  we.fit(H).min>=8
     4S     Game in the spade fit
            when  we.fit(S).min>=8
     5C     Game in clubs: no stopper
            when  we.fit(C).min>=8
     5D     Game in diamonds: no stopper
            when  we.fit(D).min>=8
     P      Plays partner's game
            when  partner.last=4H | partner.last=4S | partner.last=5C | partner.last=5D

== bergen: Bergen raises: four-card raises at the three level
   file: conventions/majors/bergen.bid
   needs: responses
   skills: bidding_conventions/bergen_raises, bidding_conventions/reverse_bergen_raises
   define bergen_constructive(M) = (bergen, !reverse, partner.last=3C) | (reverse, partner.last=3D)
   define bergen_limit(M) = (bergen, !reverse, partner.last=3D) | (reverse, partner.last=3C)

   after 1M (P)
     when bergen | reverse
     3C     Bergen: constructive raise, 4 {M}, 7-10 support points  [alert]  [artificial]
            shows M>=4, tp(M)=7..10, hcp>=5
            when  !reverse, M=4 | hcp>=8
     3D     Bergen: limit raise, 4 {M}, 11-12 support points  [alert]  [artificial]
            shows M>=4, tp(M)=11..12, hcp<=12
            when  !reverse, !passed_hand | (!drury, !drury_r)
     3D     Reverse Bergen: constructive raise, 4 {M}, 7-10 support points  [alert]  [artificial]
            shows M>=4, tp(M)=7..10, hcp>=5
            when  reverse, M=4 | hcp>=8
     3C     Reverse Bergen: limit raise, 4 {M}, 11-12 support points  [alert]  [artificial]
            shows M>=4, tp(M)=11..12, hcp<=12
            when  reverse, !passed_hand | (!drury, !drury_r)
     3M     Bergen: preemptive raise, four {M}, about 3-6
            shows M>=4, tp(M)<=7, hcp<=6, hcp>=2
            when  M=4 | hcp<=3

   after 1M (P) 3x (P)
     when x is C | x is D, bergen | reverse, bergen_constructive(M)
     4M     Game opposite a constructive raise: 17-20
            shows tp(M)=17..20
            when  M is S | x is C
     4M     Game opposite a constructive raise: 16-20
            shows tp(M)=16..20
            when  M is H, x is D
     4M     Game opposite a constructive raise
            shows tp(M)>=16
     3D     Game try opposite a constructive raise: 15-16  [alert]  [artificial]
            shows tp(M)=15..16
            when  x is C
     3H     Game try opposite a constructive raise: 15-16  [alert]  [artificial]
            shows tp(M)=15..16
            when  x is D, M is S
     3M     Sign off opposite a constructive raise
            shows tp(M)<=14
            when  M is S | x is C
     3M     Sign off opposite a constructive raise
            shows tp(M)<=15
            when  M is H, x is D

   after 1M (P) 3x (P)
     when x is C | x is D, bergen | reverse, bergen_limit(M)
     4M     Game opposite a limit raise: 14-18
            shows tp(M)=14..18
     4M     Game opposite a limit raise
            shows tp(M)>=14
     3M     Sign off opposite a limit raise: a minimum
            shows tp(M)<=13

   after 1M (P) 3C (P) 3D (P)
     when bergen, !reverse
     4M     Accepts the game try: the top of the constructive raise
            shows tp(M)>=9
     3M     Declines the game try

   after 1S (P) 3D (P) 3H (P)
     when reverse
     4S     Accepts the game try: the top of the constructive raise
            shows tp(S)>=9
     3S     Declines the game try

   after 1M (P) 3C (P) 3D (P) 3M (P)
     when bergen, !reverse
     P      No further bid
            shows tp(M)<=16
     4M     Game after the declined try: extra values
            shows tp(M)>=17

   after 1S (P) 3D (P) 3H (P) 3S (P)
     when reverse
     P      No further bid
            shows tp(S)<=16
     4S     Game after the declined try: extra values
            shows tp(S)>=17

   after 1M (P) 3x (P) 3M (P)
     when x is C | x is D, bergen | reverse
     P      No further bid

== drury: Drury: a passed hand's 2♣ limit raise
   file: conventions/majors/drury.bid
   needs: responses
   skills: bidding_conventions/drury, bidding_conventions/reverse_drury, bidding_conventions/two_way_drury

   after 1M (P)
     when passed_hand, drury | reverse
     2C     Drury: 3+ {M}, limit-raise values  [alert]  [artificial]
            shows M>=3, tp(M)=10..12, hcp<=12
            when  !two_way
     2C     Drury: exactly three {M}, limit-raise values  [alert]  [artificial]
            shows M=3, tp(M)=10..12, hcp<=12
            when  two_way
     2D     Two-way Drury: 4+ {M}, limit-raise values  [alert]  [artificial]
            shows M>=4, tp(M)=10..12, hcp<=12
            when  two_way

   after 1M (X) | 1M (1x)
     when passed_hand, in_comp, drury | reverse
     2C     Drury: 3+ {M}, limit-raise values  [alert]  [artificial]
            shows M>=3, tp(M)=10..12, hcp<=12

   after (any auction)
     when asked drury(M), rho.last=P, partner.last=2C
     2M     Sub-minimum: no game opposite a limit raise
            shows tp(M)<=12
            when  reverse
     2D     Reverse Drury: a full opening, 13-14 support points  [alert]  [artificial]
            shows tp(M)=13..14
            when  reverse
     2D     Drury: a sub-minimum opening  [alert]  [artificial]
            shows tp(M)<=12
            when  !reverse
     2M     A full opening, 13-14 support points
            shows tp(M)=13..14
            when  !reverse
     4M     Game: 15+ support points
            shows tp(M)>=15

   after (any auction)
     when asked drury(M), rho.last=P, partner.last=2D
     2M     Sub-minimum: no game opposite a four-card limit raise
            shows tp(M)<=12
     4M     Game opposite a four-card limit raise
            shows tp(M)>=13

   after (any auction)
     when answered drury(M), partner.last=2{M}, reverse
     P      Partner is sub-minimum: play 2{M}

   after (any auction)
     when answered drury(M), partner.last=2D, !reverse
     2M     Partner is sub-minimum: play 2{M}

   after (any auction)
     when answered drury(M), partner.last=2D, reverse
     4M     Game facing a full opening
            shows tp(M)>=12 | (tp(M)=11, M>=4)
     2M     Sign off facing a full opening

   after (any auction)
     when answered drury(M), partner.last=2{M}, !reverse
     4M     Game facing a full opening
            shows tp(M)>=12 | (tp(M)=11, M>=4)
     P      No game facing a full opening

   after 1M (P) 2C (P) 2D (P) 2M (P)
     P      No further bid

== game-tries: Help-suit and two-way game tries after 1M-2M
   file: conventions/majors/game-tries.bid
   needs: rebids
   skills: bidding_conventions/help_suit_game_try, bidding_conventions/two_way_game_tries
   define try_values(M) = tp(M)=17..18, hcp>=14
   define small_short(x) = x=0 | (x=1, !has(K,x), !has(Q,x), !has(J,x))
   define short_side(M) = (M is not C, small_short(C)) | (M is not D, small_short(D)) | (M is not H, small_short(H)) | (M is not S, small_short(S))
   define needs_help(x) = x>=3, !(has(A,x), has(K,x)), !(has(A,x), has(Q,x)), !(has(K,x), has(Q,x))
   define long_try(x) = x>=3, has(A,x) | has(K,x) | has(Q,x)
   define helps(x) = x>=4, has(A,x) | has(K,x) | has(Q,x) | x<=1 | (x=2, has(A,x) | has(K,x)) | (has(A,x), has(K,x)) | (has(A,x), has(Q,x)) | (has(K,x), has(Q,x))
   define wasted(x) = has(K,x) | has(Q,x) | has(J,x)

   after 1H (P) 2H (P)
     when two_way
     2S     Short-suit game try: a singleton or void somewhere, 17-18  [alert]  [artificial]
            shows try_values(H), short_side(H), H>=5
     2N     Long-suit game try in spades: four good spades, 17-18  [alert]  [artificial]
            shows try_values(H), S>=4, has(A,S) | (has(K,S), has(Q,S))

   after 1S (P) 2S (P)
     when two_way
     2N     Short-suit game try: a singleton or void somewhere, 17-18  [alert]  [artificial]
            shows try_values(S), short_side(S), S>=5

   after 1H (P) 2H (P)
     when help, !two_way
     2S     Help-suit game try: help wanted in spades, 17-18
            shows try_values(H), needs_help(S)

   after 1M (P) 2M (P)
     when two_way
     3x     Long-suit game try: 3+ {x} with honours, 17-18
            shows try_values(M), long_try(x)
            when  x is not M, M is S | x is not S

   after 1M (P) 2M (P)
     when help, !two_way
     3x     Help-suit game try: help wanted in {x}, 17-18
            shows try_values(M), needs_help(x)
            when  x is not M, M is S | x is not S

   after (any auction)
     when asked short_try(M), rho.last=P
     4M     Accepts the short-suit try: the top of the raise
            shows tp(M)>=10
     3M     Declines the short-suit try: the bottom of the raise
            shows tp(M)<=6
     2N     Where is the shortness?  [alert]  [artificial]
            shows tp(M)=7..9
            when  M is H
     3C     Where is the shortness?  [alert]  [artificial]
            shows tp(M)=7..9
            when  M is S

   after (any auction)
     when asked where_short(M), rho.last=P
     3x     Shortness in {x}  [alert]  [artificial]
            shows x<=1
            when  x is not M, M is S | x is not S, M is H | x is not C
     3M     Shortness: ♠ over 1♥, ♣ over 1♠  [alert]  [artificial]
            shows S<=1 | M is S, C<=1 | M is H

   after (any auction)
     when answered where_short(M), rho.last=P
     4M     No wasted honours opposite the shortness: game
            shows !wasted(C) | !partner.last=3C, !wasted(D) | !partner.last=3D, !wasted(H) | !partner.last=3H
            when  !partner.last=3{M}
     4M     No wasted honours in either step suit: game
            shows !wasted(S) | M is S, !wasted(C) | M is H
            when  partner.last=3{M}
     P      Wasted honours opposite the shortness: no game
            when  partner.last=3{M}
     3M     Wasted honours opposite the shortness: no game
            when  !partner.last=3{M}

   after (any auction)
     when asked help_try(x), rho.last=P
     4{trump} Accepts the help-suit try
            shows helps(x) | tp(trump)>=10 | (tp(trump)>=8, has(A,x) | has(K,x) | x=2)
     3{trump} Declines the help-suit try

   after (any auction)
     when answered help_try(x), rho.last=P, partner.last=3{trump}
     P      No further bid

   after (any auction)
     when answered short_try(M), rho.last=P, partner.last=3{M}
     P      No further bid

   after 1H (P) 2H (P) 2S (P) 2N (P) 3x (P) 3H (P)
     when two_way, x is not H
     P      No further bid

   after 1S (P) 2S (P) 2N (P) 3C (P) 3x (P) 3S (P)
     when two_way, x is not S
     P      No further bid

== gazzilli: Gazzilli 2♣ after 1M-1NT and 1♥-1♠
   file: conventions/majors/gazzilli.bid
   card: major_openings.gazzilli.play
   needs: rebids
   skills: bidding_conventions/gazzilli
   define gazzilli_strong(M) = hcp>=16, !(balanced, hcp=18..19), !(M>=6, hcp<=18)

   after 1M (P) 1N (P)
     2C     Gazzilli: 11-15 with four or more clubs, or any 16+  [alert]  [artificial]
            shows gazzilli_strong(M) | (hcp<=15, C>=4)
     3x     Five-five, 13-15: {M} and {x}
            shows M>=5, x>=5, hcp=13..15
            when  x is not M, M is S | x is not S

   after 1H (P) 1S (P)
     3x     Five-five, 13-15: hearts and {x}
            shows H>=5, x>=5, hcp=13..15, S<=3
            when  x is C | x is D
     2C     Gazzilli: 11-15 with four or more clubs, or any 16+  [alert]  [artificial]
            shows gazzilli_strong(H) | (hcp<=15, C>=4), S<=3

   after 1M (P) 1N (P) 3x (P)
     when x is not M, M is S | x is not S
     4M     Game in {M}: two or more and 9+
            shows M>=2, points>=9
     3M     Preference for {M}
            shows M>=2
     3N     No fit for {M}, 10+
            shows points>=10
     P      Weak: plays {x}

   after 1H (P) 1S (P) 3x (P)
     when x is C | x is D
     4H     Game in hearts: two or more and 9+
            shows H>=2, points>=9
     3H     Preference for hearts
            shows H>=2
     3N     No fit for hearts, 10+
            shows points>=10
     P      Weak: plays {x}

   after 1M (P) 1N (P) 3x (P) 3M (P) | 1M (P) 1N (P) 3x (P) 3N (P)
     when x is not M
     P      No further bid

   after 1H (P) 1S (P) 3x (P) 3H (P) | 1H (P) 1S (P) 3x (P) 3N (P)
     when x is C | x is D
     P      No further bid

   after (any auction)
     when asked gazzilli(M), rho.last=P, partner.last=2C
     2D     Gazzilli: 8+, asks  [alert]  [artificial]
            shows hcp>=8
     2M     5-7, two or more {M}
            shows hcp<=7, M>=2
     2H     5-7, five or more hearts, no spade fit
            shows hcp<=7, H>=5, S<=1
            when  M is S
     2S     5-7, five or more spades, no heart fit
            shows hcp<=7, S>=5, H<=1
            when  M is H, me.last=1S
     3C     5-7, six or more clubs
            shows hcp<=7, C>=6, M<=1
     3D     5-7, six or more diamonds
            shows hcp<=7, D>=6, M<=1
     2N     5-7, no fit for {M}
            shows hcp<=7, M<=1

   after (any auction)
     when answered gazzilli(M), rho.last=P, partner.last=2D
     2M     Gazzilli: the natural minimum, four or more clubs
            shows hcp<=15
     2N     Gazzilli: 16-17, balanced
            shows hcp=16..17, balanced
     3N     Gazzilli: 20-21, balanced
            shows hcp>=20, balanced
     3M     Gazzilli: 16+, six or more {M}
            shows hcp>=16, M>=6
     3C     Gazzilli: 16+, four or more clubs
            shows hcp>=16, C>=4, C>=D, M<=6
     3D     Gazzilli: 16+, four or more diamonds
            shows hcp>=16, D>=4, D>C, M<=6
     3H     Gazzilli: 16+, four or more hearts
            shows hcp>=16, H>=4
            when  M is S
     4M     Gazzilli: 16+, game
            shows hcp>=16

   after 1H (P) 1N (P) 2C (P) 2D (P)
     2S     Gazzilli: 16+, four or more spades
            shows hcp>=16, S>=4

   after 1H (P) 1S (P) 2C (P) 2D (P)
     2S     Gazzilli: 16+, three spades
            shows hcp>=16, S=3

   after 1M (P) 1N (P) 2C (P) 2D (P) 2M (P)
     4M     Game opposite a minimum: 12+ with two or more {M}
            shows points>=12, M>=2
     3M     Invites opposite a minimum: 10-11
            shows points=10..11, M>=2
     2N     No fit for {M}, 8-10
            shows M<=1, points<=10
     3N     No fit for {M}, 11+
            shows M<=1, points>=11
     P      No game opposite a minimum

   after 1H (P) 1S (P) 2C (P) 2D (P) 2H (P)
     2S     Five or more spades, no heart fit: to play
            shows S>=5, H<=1, points<=10
     2N     No fit for hearts, 8-10
            shows H<=1, S<=4, points<=10
     3N     No fit for hearts, 11+
            shows H<=1, points>=11
     4H     Game opposite a minimum: 12+ with two or more hearts
            shows points>=12, H>=2
     3H     Invites opposite a minimum: 10-11
            shows points=10..11, H>=2
     P      No game opposite a minimum

   after 1M (P) 1N (P) 2C (P) 2D (P) 2N (P)
     3N     Game opposite 16-17: 9+
            shows points>=9
     P      No game opposite 16-17

   after 1M (P) 1N (P) 2C (P) 2D (P) 3M (P)
     4M     Game in the six-card major

   after 1M (P) 1N (P) 2C (P) 2D (P) 3x (P) | 1M (P) 1N (P) 2C (P) 2D (P) 2x (P)
     when x is not M, we.forcing=game
     4M     Game in the major: three of them
            shows M>=3
     3N     Game: no fit for {M}

   after 1H (P) 1S (P) 2C (P) 2D (P) 2N (P)
     3N     Game opposite 16-17: 9+
            shows points>=9
     P      No game opposite 16-17

   after 1H (P) 1S (P) 2C (P) 2D (P) 3H (P)
     4H     Game in the six-card major

   after 1H (P) 1S (P) 2C (P) 2D (P) 2S (P)
     4S     Game in the 4-3 or better spade fit

   after 1H (P) 1S (P) 2C (P) 2D (P) 3x (P)
     when x is C | x is D
     4H     Game in hearts: three of them
            shows H>=3
     3N     Game: no fit for hearts

   after 1M (P) 1N (P) 2C (P) 2D (P) 2M (P) 2N (P) | 1H (P) 1S (P) 2C (P) 2D (P) 2H (P) 2N (P)
     3C     Five or more clubs: to play
            shows C>=5
     P      Minimum: no game

   after 1H (P) 1S (P) 2C (P) 2D (P) 2H (P) 2S (P)
     P      Minimum: partner's spades

   after 1M (P) 1N (P) 2C (P) 2D (P) 3x (P) 3N (P)
     when x is not M
     4M     Six or more {M}: game in the major
            shows M>=6

   after 1H (P) 1S (P) 2C (P) 2D (P) 3x (P) 3N (P)
     when x is C | x is D
     4H     Six or more hearts: game in the major
            shows H>=6

   after (any auction)
     when answered gazzilli(M), rho.last=P
     P      Gazzilli: no game opposite 5-7
            shows hcp<=18
            when  !partner.last=2D
     3M     Invites with six or more {M}: 19-20
            shows hcp=19..20, M>=6
            when  !partner.last=2D
     4M     Game: 21+ with six or more {M}
            shows hcp>=21, M>=6
            when  !partner.last=2D
     3N     Game: 19+, no six-card {M}
            shows hcp>=19, M<=5
            when  !partner.last=2D
     3C     Natural clubs, minimum: to play
            shows hcp<=15, C>=5
            when  partner.last=2N

== impossible-2s: Impossible 2♠
   file: conventions/majors/impossible-2s.bid
   card: major_openings.impossible_2s.play
   needs: responder-rebids
   skills: bidding_conventions/impossible_2s

   after 1H (P) 1N (P) 2m (P)
     2S     Impossible 2♠: good raise of {m}, 4+ {m}, 11+ points  [alert]  [artificial]
            shows m>=4, H<=2, points>=11

   after 1H (P) 1N (P) 2C (P) 2S (P)
     3C     Minimum: no game opposite the good raise
            shows tp(C)<=14
     3N     Game: 15+, spades and diamonds stopped
            shows tp(C)>=15, stop(S), stop(D)
     3D     Diamond stopper, not spades: looking for 3NT
            shows tp(C)>=15, stop(D), !stop(S)
     3S     Spade stopper, not diamonds: looking for 3NT
            shows tp(C)>=15, stop(S), !stop(D)
     5C     Game in clubs: 15+, neither suit stopped
            shows tp(C)>=15

   after 1H (P) 1N (P) 2D (P) 2S (P)
     3D     Minimum: no game opposite the good raise
            shows tp(D)<=14
     3N     Game: 15+, spades and clubs stopped
            shows tp(D)>=15, stop(S), stop(C)
     3C     Club stopper, not spades: looking for 3NT
            shows tp(D)>=15, stop(C), !stop(S)
     3S     Spade stopper, not clubs: looking for 3NT
            shows tp(D)>=15, stop(S), !stop(C)
     5D     Game in diamonds: 15+, neither suit stopped
            shows tp(D)>=15

   after 1H (P) 1N (P) 2m (P) 2S (P) 3m (P)
     P      Opener is minimum: play three of {m}

   after 1H (P) 1N (P) 2m (P) 2S (P) 3N (P) | 1H (P) 1N (P) 2m (P) 2S (P) 5m (P)
     P      No further bid

== jacoby-2nt: Jacoby 2NT
   file: conventions/majors/jacoby-2nt.bid
   needs: base
   skills: bidding_conventions/jacoby_2nt_splinters, bidding_conventions/jacoby_2nt, partnership_bidding/jacoby_2nt

   after 1M (P)
     when !passed_hand, jacoby | modified
     2N     Jacoby 2NT: 4+ {M}, game forcing  [alert]  [artificial]
            shows M>=4, tp(M)>=13

   after 1M (P) 2N (P)
     when jacoby, !modified
     3x     Singleton or void in {x}  [artificial]
            shows x<=1
            when  x is not M
     4x     Good 5-card side suit
            shows x>=5, quality(x)>=good
            when  x is not M
     3M     18+, no shortness
            shows hcp>=18, shortest>=2
     3N     15-17, no shortness
            shows hcp=15..17, shortest>=2
     4M     Minimum, no shortness
            shows hcp<=14, shortest>=2

== jump-raises: Weak and mixed jump raises of a major
   file: conventions/majors/jump-raises.bid
   needs: responses

   after 1M (P)
     when !bergen, !reverse, !inv
     3M     Weak jump raise: four {M}, about 3-6
            shows M>=4, tp(M)<=7, hcp<=6, hcp>=2
            when  weak, M=4 | hcp<=3
     3M     Mixed raise: four {M}, 7-10 support points
            shows M>=4, tp(M)=7..10, hcp>=5
            when  mixed, !weak

   after (any auction)
     when asked mixed_raise(M), rho.last=P, partner.last=3{M}
     4M     Game opposite a mixed raise: 16+
            shows tp(M)>=16
     P      No game opposite a mixed raise

   after (any auction)
     when asked preemptive_raise(M), rho.last=P, partner.last=3{M}
     4M     Game opposite a preemptive raise: 19+
            shows tp(M)>=19
     P      No game opposite a preemptive raise

== modified-jacoby-2nt: Modified Jacoby 2NT
   file: conventions/majors/modified-jacoby-2nt.bid
   card: major_openings.jacoby_2nt.modified
   needs: jacoby-2nt
   skills: bidding_conventions/modified_jacoby_2nt
   define mj_business(a) = a>=4, has(A,a) | has(K,a)

   after 1M (P) 2N (P)
     4M     Minimum, 5-3-3-2, nothing extra
            shows hcp<=12, shape 5-3-3-2, M=5
     3C     Minimum, 14 HCP or less: 3♦ asks  [alert]  [artificial]
            shows hcp<=14
     3D     15+, a singleton or void: 3♥ asks where  [alert]  [artificial]
            shows hcp>=15, shortest<=1
     3H     15+, 5-4-2-2: 3♠ asks for the four-card suit  [alert]  [artificial]
            shows hcp>=15, shape 5-4-2-2, M=5
     3S     15+, six or more trumps, no singleton or void  [alert]  [artificial]
            shows hcp>=15, M>=6, shortest>=2
     3N     15+, 5-3-3-2
            shows hcp>=15, shape 5-3-3-2, M=5
     4x     15+, a good five-card side suit
            shows hcp>=15, x>=5, quality(x)>=good
            when  x is not M, M is S | x is not S

   after 1M (P) 2N (2x) | 1M (P) 2N (3x)
     when x is not M
     X      Short in {x}: a singleton or void  [alert]  [artificial]
            shows x<=1
     3N     15+, balanced, the ace or king of {x}
            shows hcp>=15, balanced, has(A,x) | has(K,x)
     4M     Dead minimum, 6-3-2-2
            shows hcp<=12, shape 6-3-2-2, M=6
     3y     Natural or a control in {y}
            shows (y>=5, quality(y)>=good) | has(A,y) | has(K,y)
            when  y is not M, y is not x
     4y     Natural or a control in {y}
            shows (y>=5, quality(y)>=good) | has(A,y) | has(K,y)
            when  y is not M, y is not x, M is S | y is not S
     P      Forcing pass: a flat hand  [alert]  [artificial]

   after 1M (P) 2N (2x) P (P) | 1M (P) 2N (3x) P (P)
     when x is not M
     X      Penalty: {x} held
            shows x>=4 | (x>=3, has(A,x) | has(K,x))
     4M     Game: no slam interest
            shows !slam_interest(M)

   after 1M (P) 2N (X)
     XX     Business: 15+, balanced, to play 2NT redoubled
            shows hcp>=15, balanced
     P      Step 1: a minimum, 14 or less  [alert]  [artificial]
            shows hcp<=14
     step(1) Step 2: 15+, a singleton or void  [alert]  [artificial]
            shows hcp>=15, shortest<=1
     step(2) Step 3: 15+, 5-4-2-2  [alert]  [artificial]
            shows hcp>=15, shape 5-4-2-2, M=5
     step(3) Step 4: 15+, six or more trumps, no singleton or void  [alert]  [artificial]
            shows hcp>=15, M>=6, shortest>=2
     step(4) Step 5: 15+, 5-3-3-2  [alert]  [artificial]
            shows hcp>=15, shape 5-3-3-2, M=5

   after 1M (P) 2N (P) 3C (P) 3D (X)
     XX     Business: good diamonds
            shows mj_business(D)

   after 1M (P) 2N (P) 3C (P) 3D (3z) | 1M (P) 2N (P) 3C (P) 3D (4z)
     X      Penalty: good {z}
            shows mj_business(z)

   after 1M (P) 2N (P) 3C (P) 3D (*)
     when !rho.last=P
     P      Step 1: a singleton or void  [alert]  [artificial]
            shows shortest<=1
     step(1) Step 2: 5-4-2-2  [alert]  [artificial]
            shows shape 5-4-2-2, M=5
     step(2) Step 3: six or more trumps, no singleton or void  [alert]  [artificial]
            shows M>=6, shortest>=2
     step(3) Step 4: 5-3-3-2  [alert]  [artificial]
            shows shape 5-3-3-2, M=5

   after 1M (P) 2N (P) 3D (P) 3H (X)
     XX     Business: good hearts
            shows mj_business(H)
            when  M is S

   after 1M (P) 2N (P) 3D (P) 3H (3z) | 1M (P) 2N (P) 3D (P) 3H (4z)
     X      Penalty: good {z}
            shows mj_business(z)

   after 1S (P) 2N (P) 3D (P) 3H (*)
     when !rho.last=P
     P      Step 1: a void  [alert]  [artificial]
            shows C=0 | D=0 | H=0
     step(1) Step 2: a singleton club  [alert]  [artificial]
            shows C=1, D>=1, H>=1
     step(2) Step 3: a singleton diamond  [alert]  [artificial]
            shows D=1, C>=2, H>=1
     step(3) Step 4: a singleton heart  [alert]  [artificial]
            shows H=1, C>=2, D>=2

   after 1H (P) 2N (P) 3D (P) 3H (*)
     when !rho.last=P
     P      Step 1: a void  [alert]  [artificial]
            shows C=0 | D=0 | S=0
     step(1) Step 2: a singleton club  [alert]  [artificial]
            shows C=1, D>=1, S>=1
     step(2) Step 3: a singleton diamond  [alert]  [artificial]
            shows D=1, C>=2, S>=1
     step(3) Step 4: a singleton spade  [alert]  [artificial]
            shows S=1, C>=2, D>=2

   after 1M (P) 2N (P) 3H (P) 3S (X)
     XX     Business: good spades
            shows mj_business(S)
            when  M is H

   after 1M (P) 2N (P) 3H (P) 3S (3z) | 1M (P) 2N (P) 3H (P) 3S (4z)
     X      Penalty: good {z}
            shows mj_business(z)

   after 1S (P) 2N (P) 3H (P) 3S (*)
     when !rho.last=P
     P      Step 1: four clubs  [alert]  [artificial]
            shows C=4
     step(1) Step 2: four diamonds  [alert]  [artificial]
            shows D=4
     step(2) Step 3: four hearts  [alert]  [artificial]
            shows H=4

   after 1H (P) 2N (P) 3H (P) 3S (*)
     when !rho.last=P
     P      Step 1: four clubs  [alert]  [artificial]
            shows C=4
     step(1) Step 2: four diamonds  [alert]  [artificial]
            shows D=4
     step(2) Step 3: four spades  [alert]  [artificial]
            shows S=4

   after 1M (P) 2N (P) 3D (P) 3H (P) 3S (P) 3N (4z)
     X      Penalty: good {z}
            shows mj_business(z)

   after 1S (P) 2N (P) 3D (P) 3H (P) 3S (P) 3N (*)
     when !rho.last=P
     P      Step 1: club void  [alert]  [artificial]
            shows C=0
     step(1) Step 2: diamond void  [alert]  [artificial]
            shows D=0
     step(2) Step 3: heart void  [alert]  [artificial]
            shows H=0

   after 1H (P) 2N (P) 3D (P) 3H (P) 3S (P) 3N (*)
     when !rho.last=P
     P      Step 1: club void  [alert]  [artificial]
            shows C=0
     step(1) Step 2: diamond void  [alert]  [artificial]
            shows D=0
     step(2) Step 3: spade void  [alert]  [artificial]
            shows S=0

   after 1M (P) 2N (P) 3C (P)
     3D     Asks opener to describe the minimum  [alert]  [artificial]
            shows slam_interest(M)

   after 1M (P) 2N (P) 3D (P)
     3H     Asks where the singleton or void is  [alert]  [artificial]
            shows slam_interest(M)

   after 1M (P) 2N (P) 3H (P)
     3S     Asks for opener's four-card side suit  [alert]  [artificial]
            shows slam_interest(M)

   after 1M (P) 2N (P) 3C (P) 3D (P)
     3H     Minimum, a singleton or void  [alert]  [artificial]
            shows shortest<=1
     3S     Minimum, 5-4-2-2  [alert]  [artificial]
            shows shape 5-4-2-2, M=5
     3N     Minimum, six or more trumps, no singleton or void  [alert]  [artificial]
            shows M>=6, shortest>=2
     4M     Minimum, 5-3-3-2
            shows shape 5-3-3-2, M=5
     4x     Minimum, a good five-card side suit
            shows x>=5, quality(x)>=good
            when  x is not M, M is S | x is not S

   after 1S (P) 2N (P) 3D (P) 3H (P)
     3S     A void: 3NT asks where  [alert]  [artificial]
            shows C=0 | D=0 | H=0
     3N     A singleton club  [alert]  [artificial]
            shows C=1, D>=1, H>=1
     4C     A singleton diamond  [alert]  [artificial]
            shows D=1, C>=2, H>=1
     4D     A singleton heart  [alert]  [artificial]
            shows H=1, C>=2, D>=2

   after 1H (P) 2N (P) 3D (P) 3H (P)
     3S     A void: 3NT asks where  [alert]  [artificial]
            shows C=0 | D=0 | S=0
     3N     A singleton club  [alert]  [artificial]
            shows C=1, D>=1, S>=1
     4C     A singleton diamond  [alert]  [artificial]
            shows D=1, C>=2, S>=1
     4D     A singleton spade  [alert]  [artificial]
            shows S=1, C>=2, D>=2

   after 1M (P) 2N (P) 3D (P) 3H (P) 3S (P)
     3N     Asks where the void is  [alert]  [artificial]
            shows slam_interest(M)

   after 1S (P) 2N (P) 3D (P) 3H (P) 3S (P) 3N (P)
     4C     Club void  [alert]  [artificial]
            shows C=0
     4D     Diamond void  [alert]  [artificial]
            shows D=0
     4H     Heart void  [alert]  [artificial]
            shows H=0

   after 1H (P) 2N (P) 3D (P) 3H (P) 3S (P) 3N (P)
     4C     Club void  [alert]  [artificial]
            shows C=0
     4D     Diamond void  [alert]  [artificial]
            shows D=0
     4H     Spade void  [alert]  [artificial]
            shows S=0

   after 1S (P) 2N (P) 3H (P) 3S (P)
     3N     Four clubs  [alert]  [artificial]
            shows C=4
     4C     Four diamonds  [alert]  [artificial]
            shows D=4
     4D     Four hearts  [alert]  [artificial]
            shows H=4

   after 1H (P) 2N (P) 3H (P) 3S (P)
     3N     Four clubs  [alert]  [artificial]
            shows C=4
     4C     Four diamonds  [alert]  [artificial]
            shows D=4
     4D     Four spades  [alert]  [artificial]
            shows S=4

== splinters: Splinters over 1♥ / 1♠
   file: conventions/majors/splinters.bid
   card: major_openings.splinters.play
   needs: responses
   skills: bidding_conventions/jacoby_2nt_splinters, bidding_conventions/splinters

   after 1H (P)
     when by_resp
     3S     Splinter: 4+ hearts, game values, at most one spade  [alert]  [artificial]
            shows H>=4, S<=1, !has(A,S), !has(K,S), !has(Q,S), !has(J,S), tp(H)>=15, hcp=12..15 | (hcp=11, S=0)
            when  !passed_hand
     3S     Splinter: 4+ hearts, 10-11, at most one spade  [alert]  [artificial]
            shows H>=4, S<=1, !has(A,S), !has(K,S), !has(Q,S), !has(J,S), hcp=10..11, tp(H)>=13
            when  passed_hand

   after 1M (P)
     when by_resp
     4x     Splinter: 4+ {M}, game values, at most one {x}  [alert]  [artificial]
            shows M>=4, x<=1, !has(A,x), !has(K,x), !has(Q,x), !has(J,x), tp(M)>=15, hcp=12..15 | (hcp=11, x=0)
            when  x is not M, M is S | x is not S, !passed_hand
     4x     Splinter: 4+ {M}, 10-11, at most one {x}  [alert]  [artificial]
            shows M>=4, x<=1, !has(A,x), !has(K,x), !has(Q,x), !has(J,x), hcp=10..11, tp(M)>=13
            when  x is not M, M is S | x is not S, passed_hand

   after 1m (P) 1H (P)
     when by_open, !(twalsh, m is C)
     3S     Splinter: 4 hearts, 17-21, at most one spade  [alert]  [artificial]
            shows H>=4, S<=1, !has(A,S), !has(K,S), !has(Q,S), !has(J,S), tp(H)>=19, hcp=17..21 | (hcp=16, S=0)

   after 1x (P) 1M (P)
     when by_open, !(twalsh, x is C)
     4y     Splinter: 4 {M}, 17-21, at most one {y}  [alert]  [artificial]
            shows M>=4, y<=1, !has(A,y), !has(K,y), !has(Q,y), !has(J,y), tp(M)>=19, hcp=17..21 | (hcp=16, y=0)
            when  y is not M, y is not x, M is S | y is not S

   after 1H (P) 3S (P) | 1H (P) 3S (X) | 1H (P) 3S (X)
     4H     Game: no slam interest
            shows !((!has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=18) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=19) | (has(K,S), has(Q,S), has(J,S), tp(H)>=20))
     cheapest(C) Slam try: control bid in ♣  [alert]  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=18) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=19) | (has(K,S), has(Q,S), has(J,S), tp(H)>=20)
            when  cue, H is not C, S is not C, under_game(C), has(A,C) | C<=0 | (style is first_or_second_round, has(K,C) | C<=1), (H is not C, S is not C, C>=2, !has(A,C), !has(K,C)) | (H is not D, S is not D, D>=2, !has(A,D), !has(K,D)) | (H is not H, S is not H, H>=2, !has(A,H), !has(K,H)) | (H is not S, S is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(D) Slam try: control bid in ♦  [alert]  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=18) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=19) | (has(K,S), has(Q,S), has(J,S), tp(H)>=20)
            when  cue, H is not D, S is not D, under_game(D), has(A,D) | D<=0 | (style is first_or_second_round, has(K,D) | D<=1), (H is not C, S is not C, C>=2, !has(A,C), !has(K,C)) | (H is not D, S is not D, D>=2, !has(A,D), !has(K,D)) | (H is not H, S is not H, H>=2, !has(A,H), !has(K,H)) | (H is not S, S is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(H) Slam try: control bid in ♥  [alert]  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=18) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=19) | (has(K,S), has(Q,S), has(J,S), tp(H)>=20)
            when  cue, H is not H, S is not H, under_game(H), has(A,H) | H<=0 | (style is first_or_second_round, has(K,H) | H<=1), (H is not C, S is not C, C>=2, !has(A,C), !has(K,C)) | (H is not D, S is not D, D>=2, !has(A,D), !has(K,D)) | (H is not H, S is not H, H>=2, !has(A,H), !has(K,H)) | (H is not S, S is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(S) Slam try: control bid in ♠  [alert]  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=18) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=19) | (has(K,S), has(Q,S), has(J,S), tp(H)>=20)
            when  cue, H is not S, S is not S, under_game(S), has(A,S) | S<=0 | (style is first_or_second_round, has(K,S) | S<=1), (H is not C, S is not C, C>=2, !has(A,C), !has(K,C)) | (H is not D, S is not D, D>=2, !has(A,D), !has(K,D)) | (H is not H, S is not H, H>=2, !has(A,H), !has(K,H)) | (H is not S, S is not S, S>=2, !has(A,S), !has(K,S))
     4N     Keycard ask in {trump}  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=17) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=18) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=19) | (has(K,S), has(Q,S), has(J,S), tp(H)>=20)
            when  k1430 | k0314

   after 1M (P) 4x (P) | 1M (P) 4x (X)
     when x is not M, M is S | x is not S
     4M     Game: no slam interest
            shows !((!has(K,x), !has(Q,x), !has(J,x), tp(M)>=14) | (!has(K,x), !has(Q,x), has(J,x), tp(M)>=15) | (!has(K,x), has(Q,x), !has(J,x), tp(M)>=16) | (!has(K,x), has(Q,x), has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), !has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), has(J,x), tp(M)>=18) | (has(K,x), has(Q,x), !has(J,x), tp(M)>=19) | (has(K,x), has(Q,x), has(J,x), tp(M)>=20))
     cheapest(C) Slam try: control bid in ♣  [alert]  [artificial]
            shows (!has(K,x), !has(Q,x), !has(J,x), tp(M)>=14) | (!has(K,x), !has(Q,x), has(J,x), tp(M)>=15) | (!has(K,x), has(Q,x), !has(J,x), tp(M)>=16) | (!has(K,x), has(Q,x), has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), !has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), has(J,x), tp(M)>=18) | (has(K,x), has(Q,x), !has(J,x), tp(M)>=19) | (has(K,x), has(Q,x), has(J,x), tp(M)>=20)
            when  cue, M is not C, x is not C, under_game(C), has(A,C) | C<=0 | (style is first_or_second_round, has(K,C) | C<=1), (M is not C, x is not C, C>=2, !has(A,C), !has(K,C)) | (M is not D, x is not D, D>=2, !has(A,D), !has(K,D)) | (M is not H, x is not H, H>=2, !has(A,H), !has(K,H)) | (M is not S, x is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(D) Slam try: control bid in ♦  [alert]  [artificial]
            shows (!has(K,x), !has(Q,x), !has(J,x), tp(M)>=14) | (!has(K,x), !has(Q,x), has(J,x), tp(M)>=15) | (!has(K,x), has(Q,x), !has(J,x), tp(M)>=16) | (!has(K,x), has(Q,x), has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), !has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), has(J,x), tp(M)>=18) | (has(K,x), has(Q,x), !has(J,x), tp(M)>=19) | (has(K,x), has(Q,x), has(J,x), tp(M)>=20)
            when  cue, M is not D, x is not D, under_game(D), has(A,D) | D<=0 | (style is first_or_second_round, has(K,D) | D<=1), (M is not C, x is not C, C>=2, !has(A,C), !has(K,C)) | (M is not D, x is not D, D>=2, !has(A,D), !has(K,D)) | (M is not H, x is not H, H>=2, !has(A,H), !has(K,H)) | (M is not S, x is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(H) Slam try: control bid in ♥  [alert]  [artificial]
            shows (!has(K,x), !has(Q,x), !has(J,x), tp(M)>=14) | (!has(K,x), !has(Q,x), has(J,x), tp(M)>=15) | (!has(K,x), has(Q,x), !has(J,x), tp(M)>=16) | (!has(K,x), has(Q,x), has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), !has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), has(J,x), tp(M)>=18) | (has(K,x), has(Q,x), !has(J,x), tp(M)>=19) | (has(K,x), has(Q,x), has(J,x), tp(M)>=20)
            when  cue, M is not H, x is not H, under_game(H), has(A,H) | H<=0 | (style is first_or_second_round, has(K,H) | H<=1), (M is not C, x is not C, C>=2, !has(A,C), !has(K,C)) | (M is not D, x is not D, D>=2, !has(A,D), !has(K,D)) | (M is not H, x is not H, H>=2, !has(A,H), !has(K,H)) | (M is not S, x is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(S) Slam try: control bid in ♠  [alert]  [artificial]
            shows (!has(K,x), !has(Q,x), !has(J,x), tp(M)>=14) | (!has(K,x), !has(Q,x), has(J,x), tp(M)>=15) | (!has(K,x), has(Q,x), !has(J,x), tp(M)>=16) | (!has(K,x), has(Q,x), has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), !has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), has(J,x), tp(M)>=18) | (has(K,x), has(Q,x), !has(J,x), tp(M)>=19) | (has(K,x), has(Q,x), has(J,x), tp(M)>=20)
            when  cue, M is not S, x is not S, under_game(S), has(A,S) | S<=0 | (style is first_or_second_round, has(K,S) | S<=1), (M is not C, x is not C, C>=2, !has(A,C), !has(K,C)) | (M is not D, x is not D, D>=2, !has(A,D), !has(K,D)) | (M is not H, x is not H, H>=2, !has(A,H), !has(K,H)) | (M is not S, x is not S, S>=2, !has(A,S), !has(K,S))
     4N     Keycard ask in {trump}  [artificial]
            shows (!has(K,x), !has(Q,x), !has(J,x), tp(M)>=14) | (!has(K,x), !has(Q,x), has(J,x), tp(M)>=15) | (!has(K,x), has(Q,x), !has(J,x), tp(M)>=16) | (!has(K,x), has(Q,x), has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), !has(J,x), tp(M)>=17) | (has(K,x), !has(Q,x), has(J,x), tp(M)>=18) | (has(K,x), has(Q,x), !has(J,x), tp(M)>=19) | (has(K,x), has(Q,x), has(J,x), tp(M)>=20)
            when  k1430 | k0314

   after 1m (P) 1H (P) 3S (P)
     when by_open, !(twalsh, m is C)
     4H     Game: no slam interest
            shows !((!has(K,S), !has(Q,S), !has(J,S), tp(H)>=11) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=12) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=13) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (has(K,S), has(Q,S), has(J,S), tp(H)>=17))
     cheapest(C) Slam try: control bid in ♣  [alert]  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=11) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=12) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=13) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (has(K,S), has(Q,S), has(J,S), tp(H)>=17)
            when  cue, H is not C, S is not C, under_game(C), has(A,C) | C<=0 | (style is first_or_second_round, has(K,C) | C<=1), (H is not C, S is not C, C>=2, !has(A,C), !has(K,C)) | (H is not D, S is not D, D>=2, !has(A,D), !has(K,D)) | (H is not H, S is not H, H>=2, !has(A,H), !has(K,H)) | (H is not S, S is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(D) Slam try: control bid in ♦  [alert]  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=11) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=12) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=13) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (has(K,S), has(Q,S), has(J,S), tp(H)>=17)
            when  cue, H is not D, S is not D, under_game(D), has(A,D) | D<=0 | (style is first_or_second_round, has(K,D) | D<=1), (H is not C, S is not C, C>=2, !has(A,C), !has(K,C)) | (H is not D, S is not D, D>=2, !has(A,D), !has(K,D)) | (H is not H, S is not H, H>=2, !has(A,H), !has(K,H)) | (H is not S, S is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(H) Slam try: control bid in ♥  [alert]  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=11) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=12) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=13) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (has(K,S), has(Q,S), has(J,S), tp(H)>=17)
            when  cue, H is not H, S is not H, under_game(H), has(A,H) | H<=0 | (style is first_or_second_round, has(K,H) | H<=1), (H is not C, S is not C, C>=2, !has(A,C), !has(K,C)) | (H is not D, S is not D, D>=2, !has(A,D), !has(K,D)) | (H is not H, S is not H, H>=2, !has(A,H), !has(K,H)) | (H is not S, S is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(S) Slam try: control bid in ♠  [alert]  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=11) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=12) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=13) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (has(K,S), has(Q,S), has(J,S), tp(H)>=17)
            when  cue, H is not S, S is not S, under_game(S), has(A,S) | S<=0 | (style is first_or_second_round, has(K,S) | S<=1), (H is not C, S is not C, C>=2, !has(A,C), !has(K,C)) | (H is not D, S is not D, D>=2, !has(A,D), !has(K,D)) | (H is not H, S is not H, H>=2, !has(A,H), !has(K,H)) | (H is not S, S is not S, S>=2, !has(A,S), !has(K,S))
     4N     Keycard ask in {trump}  [artificial]
            shows (!has(K,S), !has(Q,S), !has(J,S), tp(H)>=11) | (!has(K,S), !has(Q,S), has(J,S), tp(H)>=12) | (!has(K,S), has(Q,S), !has(J,S), tp(H)>=13) | (!has(K,S), has(Q,S), has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), !has(J,S), tp(H)>=14) | (has(K,S), !has(Q,S), has(J,S), tp(H)>=15) | (has(K,S), has(Q,S), !has(J,S), tp(H)>=16) | (has(K,S), has(Q,S), has(J,S), tp(H)>=17)
            when  k1430 | k0314

   after 1x (P) 1M (P) 4y (P)
     when by_open, y is not M, y is not x, M is S | y is not S, !(twalsh, x is C)
     4M     Game: no slam interest
            shows !((!has(K,y), !has(Q,y), !has(J,y), tp(M)>=11) | (!has(K,y), !has(Q,y), has(J,y), tp(M)>=12) | (!has(K,y), has(Q,y), !has(J,y), tp(M)>=13) | (!has(K,y), has(Q,y), has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), !has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), has(J,y), tp(M)>=15) | (has(K,y), has(Q,y), !has(J,y), tp(M)>=16) | (has(K,y), has(Q,y), has(J,y), tp(M)>=17))
     cheapest(C) Slam try: control bid in ♣  [alert]  [artificial]
            shows (!has(K,y), !has(Q,y), !has(J,y), tp(M)>=11) | (!has(K,y), !has(Q,y), has(J,y), tp(M)>=12) | (!has(K,y), has(Q,y), !has(J,y), tp(M)>=13) | (!has(K,y), has(Q,y), has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), !has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), has(J,y), tp(M)>=15) | (has(K,y), has(Q,y), !has(J,y), tp(M)>=16) | (has(K,y), has(Q,y), has(J,y), tp(M)>=17)
            when  cue, M is not C, y is not C, under_game(C), has(A,C) | C<=0 | (style is first_or_second_round, has(K,C) | C<=1), (M is not C, y is not C, C>=2, !has(A,C), !has(K,C)) | (M is not D, y is not D, D>=2, !has(A,D), !has(K,D)) | (M is not H, y is not H, H>=2, !has(A,H), !has(K,H)) | (M is not S, y is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(D) Slam try: control bid in ♦  [alert]  [artificial]
            shows (!has(K,y), !has(Q,y), !has(J,y), tp(M)>=11) | (!has(K,y), !has(Q,y), has(J,y), tp(M)>=12) | (!has(K,y), has(Q,y), !has(J,y), tp(M)>=13) | (!has(K,y), has(Q,y), has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), !has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), has(J,y), tp(M)>=15) | (has(K,y), has(Q,y), !has(J,y), tp(M)>=16) | (has(K,y), has(Q,y), has(J,y), tp(M)>=17)
            when  cue, M is not D, y is not D, under_game(D), has(A,D) | D<=0 | (style is first_or_second_round, has(K,D) | D<=1), (M is not C, y is not C, C>=2, !has(A,C), !has(K,C)) | (M is not D, y is not D, D>=2, !has(A,D), !has(K,D)) | (M is not H, y is not H, H>=2, !has(A,H), !has(K,H)) | (M is not S, y is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(H) Slam try: control bid in ♥  [alert]  [artificial]
            shows (!has(K,y), !has(Q,y), !has(J,y), tp(M)>=11) | (!has(K,y), !has(Q,y), has(J,y), tp(M)>=12) | (!has(K,y), has(Q,y), !has(J,y), tp(M)>=13) | (!has(K,y), has(Q,y), has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), !has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), has(J,y), tp(M)>=15) | (has(K,y), has(Q,y), !has(J,y), tp(M)>=16) | (has(K,y), has(Q,y), has(J,y), tp(M)>=17)
            when  cue, M is not H, y is not H, under_game(H), has(A,H) | H<=0 | (style is first_or_second_round, has(K,H) | H<=1), (M is not C, y is not C, C>=2, !has(A,C), !has(K,C)) | (M is not D, y is not D, D>=2, !has(A,D), !has(K,D)) | (M is not H, y is not H, H>=2, !has(A,H), !has(K,H)) | (M is not S, y is not S, S>=2, !has(A,S), !has(K,S))
     cheapest(S) Slam try: control bid in ♠  [alert]  [artificial]
            shows (!has(K,y), !has(Q,y), !has(J,y), tp(M)>=11) | (!has(K,y), !has(Q,y), has(J,y), tp(M)>=12) | (!has(K,y), has(Q,y), !has(J,y), tp(M)>=13) | (!has(K,y), has(Q,y), has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), !has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), has(J,y), tp(M)>=15) | (has(K,y), has(Q,y), !has(J,y), tp(M)>=16) | (has(K,y), has(Q,y), has(J,y), tp(M)>=17)
            when  cue, M is not S, y is not S, under_game(S), has(A,S) | S<=0 | (style is first_or_second_round, has(K,S) | S<=1), (M is not C, y is not C, C>=2, !has(A,C), !has(K,C)) | (M is not D, y is not D, D>=2, !has(A,D), !has(K,D)) | (M is not H, y is not H, H>=2, !has(A,H), !has(K,H)) | (M is not S, y is not S, S>=2, !has(A,S), !has(K,S))
     4N     Keycard ask in {trump}  [artificial]
            shows (!has(K,y), !has(Q,y), !has(J,y), tp(M)>=11) | (!has(K,y), !has(Q,y), has(J,y), tp(M)>=12) | (!has(K,y), has(Q,y), !has(J,y), tp(M)>=13) | (!has(K,y), has(Q,y), has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), !has(J,y), tp(M)>=14) | (has(K,y), !has(Q,y), has(J,y), tp(M)>=15) | (has(K,y), has(Q,y), !has(J,y), tp(M)>=16) | (has(K,y), has(Q,y), has(J,y), tp(M)>=17)
            when  k1430 | k0314

== choice-of-games: Choosing between 3NT and a major-suit game
   file: conventions/notrump/choice-of-games.bid
   needs: notrump-base
   skills: partnership_bidding/basic_notrump

   after (any auction)
     when asked choice
     4H     Corrects to the heart fit
            shows H>=8-partner.H.min
            when  partner.H>=4
     4S     Corrects to the spade fit
            shows S>=8-partner.S.min
            when  partner.S>=4
     P      Plays 3NT

== jacoby-transfers: Jacoby Transfers
   file: conventions/notrump/jacoby-transfers.bid
   card: notrump.transfers.jacoby
   needs: notrump-base
   skills: bidding_conventions/jacoby_transfers, partnership_bidding/stayman_transfers

   after nt1
     when !they.bid | systems_on
     2D     Transfer to hearts  [announce: Transfer]  [artificial]
            shows H>=5
     2H     Transfer to spades  [announce: Transfer]  [artificial]
            shows S>=5
     2H     Transfer to spades, 5-5 in the majors  [announce: Transfer]  [artificial]
            shows S>=5, H>=5
            when  style is bba

   after nt1 2D (P)
     2H     Completes transfer
            when  system is not brill

   after nt1 2H (P)
     2S     Completes transfer
            when  system is not brill

   after nt1 2D (P)
     when system is brill
     2H     Completes transfer: 2-3 ♥, or a minimum 3=4=3=3
            shows H<=3 | (H=4, shortest=3, hcp<=15)

   after nt1 2H (P)
     when system is brill
     2S     Completes transfer: 2-3 ♠, or a minimum 4=3=3=3
            shows S<=3 | (S=4, shortest=3, hcp<=15)

   after (any auction)
     when answered transfer(M)
     3M     Sign off in the known fit
            shows suit_strength=signoff
            when  partner.M>=4, !partner.last=2{M}
     4M     Game: in the fit, opposite a super-accept
            shows suit_strength=invite
            when  partner.M>=4
     P      Weak: to play, {signoff} total points
            shows strength=signoff
            when  maybe partner.M<=3 | partner.last=3{M}, !passes_out_artificial
     2N     Invitational: {invite} total points, exactly 5 {M}
            shows M=5, balanced | shortest>=2, strength=invite
     3M     Invitational: {invite} total points, 6+ {M}
            shows M>=6, suit_strength=invite
            when  partner.last=2{M}
     3M     Invitational: 6+ {M}
            shows M>=6, strength>=invite, suit_strength=signoff, hcp>=25-partner.hcp.max
            when  partner.last=2{M}
     P      Weak in HCP: play here
            shows M>=6, strength>=invite, suit_strength=signoff, hcp<=24-partner.hcp.max
            when  partner.last=2{M}
     3N     Choice of games: 5 {M}, {game} total points
            shows M=5, balanced, strength=game
            when  maybe partner.M<=2
     4M     Game: {game} total points, 6+ {M}
            shows M>=6, suit_strength=game
            when  !texas
     4M     Game: 6+ {M}, mild slam interest
            shows M>=6, suit_points>=31-partner.points.max, suit_points<=32-partner.points.min
            when  texas
     4M     Game: {game} total points, 6+ {M}
            shows M>=6, suit_strength=game
            when  texas
     4M     Game: in the known fit
            shows suit_strength=game
            when  partner.M>=3
     5M     Slam invitation: 6+ {M}
            shows M>=6, suit_strength=slam_invite
            when  !texas, partner.last=2{M}
     6M     Slam: 6+ {M}
            shows M>=6, suit_strength>=slam
            when  !texas, partner.last=2{M}
     3m     Second suit, game forcing
            shows m>=4, strength>=game
     4N     Quantitative, 5 {M}
            shows M=5, balanced, strength=slam_invite
            when  quant_4nt
     6N     Slam: {slam} total points, 5 {M}
            shows M=5, balanced, strength=slam
     P      Weak in HCP: play here
            shows M=5, strength=invite, hcp<=24-partner.hcp.max
            when  maybe partner.M<=3 | partner.last=3{M}
     2N     Invitational, exactly 5 {M}, a singleton
            shows M=5, strength=invite, hcp>=25-partner.hcp.max

   after (any auction)
     when asked quant_major(M)
     6M     Accepts in {M}: four trumps, a doubleton
            shows M>=4, shortest=2, points>=32-partner.points.min
            when  imps
     6M     Accepts in {M}: three trumps, a doubleton, not a maximum
            shows M=3, shortest=2, points>=32-partner.points.min, hcp<=shown.hcp.max-1
            when  imps
     6M     Accepts in {M}: a fit and a doubleton
            shows M>=3, shortest=2, points<=31-partner.points.min, tp(M)>=32-partner.points.min
     6N     Accepts the slam invitation
            shows points>=32-partner.points.min
     P      Declines
            shows points<=31-partner.points.min

   after (any auction)
     when asked new_suit(M)
     3M     3+ {M}: support
            shows M>=3
     3N     No fit: 2 {M}
            shows M<=2

   after (any auction)
     when asked slam_try(M)
     4N     Keycard ask: good fit and a maximum  [artificial]
            shows M>=3, points>=31-partner.suit_points.min
     P      No slam: plays game

   after (any auction)
     when asked major_slam_invite(M)
     6M     Accepts the slam invitation: not a minimum
            shows hcp>=shown.hcp.max-1
     P      Declines: a minimum
            shows hcp<=shown.hcp.max-2

   after 1N (P) 2D (P) 2H (P)
     2S     5 hearts and 4 spades, invitational, not forcing
            shows H=5, S=4, hcp>=24-partner.hcp.max, hcp<=24-partner.hcp.min

   after 1N (P) 2D (P) 2H (P) 2S (P)
     4H     Accepts, in the heart fit
            shows H>=4 | (H=3, points>=24-partner.hcp.min)
     3H     Declines, in the heart fit
            shows H=3, points<=23-partner.hcp.min
     4S     Accepts, in the spade fit
            shows S>=4, H<=2, points>=23-partner.hcp.min
     3S     Declines, in the spade fit
            shows S>=4, H<=2, points<=22-partner.hcp.min
     P      No eight-card fit: play 2S
            shows H<=2, S<=3

   after 1N (P) 2D (P) 2H (P) 2S (P) 3H (P)
     4H     Game: the top of the invitation
            shows hcp>=25-partner.hcp.max
     P      Minimum: play 3H
            shows hcp<=24-partner.hcp.max

   after 1N (P) 2D (P) 2H (P) 2S (P) 3S (P)
     4S     Game: the top of the invitation
            shows hcp>=25-partner.hcp.max
     P      Minimum: play 3S
            shows hcp<=24-partner.hcp.max

   after 1N (X)
     when vs_double
     2H     Transfer to spades  [announce: Transfer]  [artificial]
            shows S>=5
            when  S>=H
     2D     Transfer to hearts  [announce: Transfer]  [artificial]
            shows H>=5
            when  H>S

   after 1N (2C)
     when vs_2c
     2H     Transfer to spades  [announce: Transfer]  [artificial]
            shows S>=5, hcp>=5
            when  S>=H
     2D     Transfer to hearts  [announce: Transfer]  [artificial]
            shows H>=5, hcp>=5
            when  H>S

   after 1N (X) 2D (P)
     when vs_double
     2H     Completes transfer

   after 1N (X) 2H (P)
     when vs_double
     2S     Completes transfer

   after 1N (2C) 2D (P)
     when vs_2c
     2H     Completes transfer

   after 1N (2C) 2H (P)
     when vs_2c
     2S     Completes transfer

== lebensohl: Lebensohl after they overcall our 1NT
   file: conventions/notrump/lebensohl.bid
   card: notrump.lebensohl.over_interference
   needs: nt-interference
   skills: competitive_bidding/lebensohl

   after 1N (2y)
     when y is not C, rho.y>=4, maybe rho.H<=3 | maybe rho.S<=3, !rub
     3y     Stayman, no stopper in {y}: a four-card major  [alert]  [artificial]
            shows hcp>=10, !stop(y), H=4 | S=4, H<=4, S<=4
            when  y is D
     3y     Stayman, no stopper in {y}: four spades  [alert]  [artificial]
            shows hcp>=10, !stop(y), S=4
            when  y is H
     3y     Stayman, no stopper in {y}: four hearts  [alert]  [artificial]
            shows hcp>=10, !stop(y), H=4
            when  y is S
     2N     Lebensohl: relays to 3♣, then Stayman with a stopper in {y}  [alert]  [artificial]
            shows hcp>=10, stop(y), H=4 | S=4, H<=4, S<=4
            when  y is D
     2N     Lebensohl: relays to 3♣, then Stayman with a stopper in {y}  [alert]  [artificial]
            shows hcp>=10, stop(y), S=4
            when  y is H
     2N     Lebensohl: relays to 3♣, then Stayman with a stopper in {y}  [alert]  [artificial]
            shows hcp>=10, stop(y), H=4, S<=4
            when  y is S
     3N     Game: 10+ HCP, no stopper in {y}
            shows hcp>=10, !stop(y)
     2N     Lebensohl: relays to 3♣, then 3NT with a stopper in {y}  [alert]  [artificial]
            shows hcp>=10, stop(y)
     2N     Lebensohl: relays to 3♣, to play three of a long minor  [alert]  [artificial]
            shows hcp>=4, points<=9, C>=6 | D>=6, H<=4, S<=4
            when  y is not D
     2N     Lebensohl: relays to 3♣, to play three clubs  [alert]  [artificial]
            shows hcp>=4, points<=9, C>=6, H<=4, S<=4
            when  y is D
     2N     Lebensohl: relays to 3♣, to play three hearts  [alert]  [artificial]
            shows hcp>=4, points<=9, H>=5, H>=S
            when  y is S
     2N     Lebensohl: relays to 3♣, then invites in spades  [alert]  [artificial]
            shows S>=5, S>=H, hcp=8..9
            when  y is D | y is H
     2N     Lebensohl: relays to 3♣, then invites in hearts  [alert]  [artificial]
            shows H>=5, H>S, hcp=8..9
            when  y is D
     3S     Natural, forcing to game: five or more spades
            shows S>=5, S>=H, points>=10
            when  y is D | y is H
     3H     Natural, forcing to game: five or more hearts
            shows H>=5, H>S, points>=10
            when  y is D

   after 1N (2y) 2N (P)
     when y is not C, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3, !rub
     3C     Completes the Lebensohl relay  [alert]  [artificial]

   after 1N (2y) 2N (P) 3C (P)
     when y is not C, rho.y>=4, maybe rho.H<=3 | maybe rho.S<=3, !rub
     P      To play: clubs
            shows C>=6, points<=9
     3D     To play: diamonds
            shows D>=6, points<=9
            when  y is not D
     3H     To play: hearts
            shows H>=5, points<=9
            when  y is S
     3H     Invitational: five or more hearts
            shows H>=5, hcp=8..9
            when  y is D
     3S     Invitational: five or more spades
            shows S>=5, hcp=8..9
            when  y is D | y is H
     3y     Stayman, a stopper in {y}: a four-card major  [alert]  [artificial]
            shows hcp>=10, stop(y), H=4 | S=4, H<=4, S<=4
            when  y is D
     3y     Stayman, a stopper in {y}: four spades  [alert]  [artificial]
            shows hcp>=10, stop(y), S=4
            when  y is H
     3y     Stayman, a stopper in {y}: four hearts  [alert]  [artificial]
            shows hcp>=10, stop(y), H=4
            when  y is S
     3N     Game with a stopper in {y}
            shows hcp>=10, stop(y)

   after (any auction)
     when asked leb_invite(M)
     4M     Accepts: a maximum and three or more {M}
            shows M>=3, hcp>=16
     3N     Accepts: a maximum, two {M}
            shows M<=2, hcp>=16
     P      Declines: a minimum
            shows hcp<=15

   after 1N (2y) 3y (P) | 1N (2y) 2N (P) 3C (P) 3y (P)
     when y is not C, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3, !rub
     3H     Four hearts
            shows H>=4
            when  y is D
     3S     Four spades
            shows S>=4, H<=3 | y is H
            when  y is D | y is H
     4H     Four hearts
            shows H>=4
            when  y is S

   after 1N (2y) 2N (P) 3C (P) 3y (P)
     when y is not C, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3, !rub
     3N     No four-card major: game in notrump

   after 1N (2y) 3y (P)
     when y is not C, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3, !rub
     3N     No four-card major, a stopper in {y}
            shows stop(y)
     4C     No four-card major, no stopper in {y}: clubs
            shows C>=D, !stop(y)
     4D     No four-card major, no stopper in {y}: diamonds
            shows D>C, !stop(y)
            when  y is not D

   after 1N (2y) 3y (P) 4m (P)
     when y is not C, rho.y>=4, maybe rho.H<=3 | maybe rho.S<=3, !rub
     5m     Game in {m}

== minor-suit-stayman: Minor Suit Stayman over 1NT
   file: conventions/notrump/minor-suit-stayman.bid
   card: notrump.minor_suit_stayman.play
   needs: notrump-base
   skills: bidding_conventions/minor_suit_stayman

   after nt1_undoubled
     when !they.bid | systems_on
     2S     Minor Suit Stayman: 5-4+ in the minors, game values  [alert]  [artificial]
            shows C>=4, D>=4, C+D>=9, H<=3, S<=3, strength>=game

   after nt1_undoubled 2S (P)
     4C     Four or more clubs, a maximum  [alert]  [artificial]
            shows C>=4, hcp>=shown.hcp.max
     4D     Four or more diamonds, not four clubs, a maximum  [alert]  [artificial]
            shows D>=4, C<=3, hcp>=shown.hcp.max
     3N     No four-card minor, a maximum
            shows C<=3, D<=3, hcp>=shown.hcp.max
     3C     Four or more clubs  [alert]  [artificial]
            shows C>=4
     3D     Four or more diamonds, not four clubs  [alert]  [artificial]
            shows D>=4, C<=3
     2N     No four-card minor  [alert]  [artificial]
            shows C<=3, D<=3

   after nt1_undoubled 2S (P) 3m (P) | nt1_undoubled 2S (P) 4m (P)
     4N     Keycard ask in {m}  [alert]  [artificial]
            shows tp(m)>=33-partner.hcp.min
            when  k1430 | k0314
     6m     Slam in the minor fit
            shows tp(m)>=33-partner.hcp.min
     3H     Short hearts: asks for a heart stopper  [alert]  [artificial]
            shows H<=1
     3S     Short spades: asks for a spade stopper  [alert]  [artificial]
            shows S<=1, H>=2
     3N     Game in notrump

   after nt1_undoubled 2S (P) 3m (P) 3M (P)
     3N     A stopper in {M}: game in notrump
            shows stop(M)
     4m     No stopper in {M}
            shows !stop(M)

   after nt1_undoubled 2S (P) 3m (P) 3M (P) 4m (P)
     5m     Game in the minor fit

   after nt1_undoubled 2S (P) 3m (P) 3M (P) 3N (P)
     P      Game in notrump

   after nt1_undoubled 2S (P) 4m (P)
     5m     Game in the minor fit

   after nt1_undoubled 2S (P) 2N (P) | nt1_undoubled 2S (P) 3N (P)
     6N     No fit: slam values
            shows hcp>=33-partner.hcp.min
     4N     No fit: quantitative, invites 6NT
            shows hcp>=31-partner.hcp.min, hcp<=32-partner.hcp.min
     3N     No fit: game

   after nt1_undoubled 2S (P) 3N (P)
     P      No fit: 3NT

== minor-transfers: Minor-suit responses to 1NT
   file: conventions/notrump/minor-transfers.bid
   needs: notrump-base
   skills: bidding_conventions/minor_suit_transfers

   after nt1
     when !they.bid | systems_on, style is relay
     2S     Relay to 3♣: a weak hand with a long minor  [alert]  [artificial]
            shows C>=6 | D>=6, H<=4, S<=4, strength=signoff

   after nt1 2S (P)
     when style is relay
     3C     Completes the relay  [artificial]

   after (any auction)
     when answered relay
     P      Clubs: play here
            shows C>=6
     3D     Diamonds: play here
            shows D>=6

   after nt1
     when !they.bid | systems_on, style is four_way | style is four_way_reversed
     2S     Transfer to clubs  [alert]  [artificial]
            shows C>=6, H<=4, S<=4, strength<=invite
     2N     Transfer to diamonds  [alert]  [artificial]
            shows D>=6, H<=4, S<=4, strength<=invite

   after nt1 2S (P)
     when style is four_way
     2N     Good club support: Kxx or better  [alert]  [artificial]
            shows C>=3, has(A,C) | has(K,C)
     3C     No good club support

   after nt1 2N (P)
     when style is four_way
     3C     Good diamond support: Kxx or better  [alert]  [artificial]
            shows D>=3, has(A,D) | has(K,D)
     3D     No good diamond support

   after nt1 2S (P)
     when style is four_way_reversed
     3C     Good club support: Kxx or better
            shows C>=3, has(A,C) | has(K,C)
     2N     No good club support  [alert]  [artificial]

   after nt1 2N (P)
     when style is four_way_reversed
     3D     Good diamond support: Kxx or better
            shows D>=3, has(A,D) | has(K,D)
     3C     No good diamond support  [alert]  [artificial]

   after nt1
     when !they.bid | systems_on, style is bba
     2S     Transfer to clubs  [alert]  [artificial]
            shows C>=6, H<=4, S<=4, strength<=invite
     3C     Transfer to diamonds  [alert]  [artificial]
            shows D>=6, H<=4, S<=4, strength<=invite

   after nt1 2S (P)
     when style is bba
     3C     Completes the transfer

   after nt1 3C (P)
     when style is bba
     3D     Completes the transfer

   after nt1_undoubled
     when !they.bid | systems_on, style is two_nt_three_c
     2N     Transfer to clubs: six or more clubs  [alert]  [artificial]
            shows C>=6, D<=3, H<=3, S<=3
     3C     Transfer to diamonds: six or more diamonds  [alert]  [artificial]
            shows D>=6, C<=3, H<=3, S<=3

   after nt1_undoubled 2N (P)
     when style is two_nt_three_c
     3C     Completes the transfer

   after nt1_undoubled 3C (P)
     when style is two_nt_three_c
     3D     Completes the transfer

   after (any auction)
     when answered transfer(m)
     P      Play here
            shows strength<=invite
            when  partner.last=3{m}
     3m     Sign off in {m}
            shows strength<=invite
     3N     To play: {game} total points
            shows strength>=game
     3N     To play: invitational values, a long {m}
            shows strength=invite
            when  partner.m>=3

   after 1N (2C)
     when vs_2c, style is relay
     2S     Relay to 3♣: a weak hand with a long minor  [alert]  [artificial]
            shows C>=6 | D>=6, H<=4, S<=4, hcp>=5, strength=signoff

   after 1N (2C) 2S (P)
     when vs_2c, style is relay
     3C     Completes the relay  [artificial]

   after 1N (2C)
     when vs_2c, style is four_way | style is four_way_reversed
     2S     Transfer to clubs  [alert]  [artificial]
            shows C>=6, H<=4, S<=4, hcp>=5, strength<=invite
     2N     Transfer to diamonds  [alert]  [artificial]
            shows D>=6, H<=4, S<=4, hcp>=5, strength<=invite

   after 1N (2C)
     when vs_2c, style is bba
     2S     Transfer to clubs  [alert]  [artificial]
            shows C>=6, H<=4, S<=4, hcp>=5, strength<=invite
     3C     Transfer to diamonds  [alert]  [artificial]
            shows D>=6, H<=4, S<=4, hcp>=5, strength<=invite

   after 1N (2C) 2S (P)
     when vs_2c, style is bba
     3C     Completes the transfer

   after 1N (2C) 3C (P)
     when vs_2c, style is bba
     3D     Completes the transfer

== nt-interference: Our 1NT when RHO acts
   file: conventions/notrump/nt-interference.bid
   needs: notrump-base

   after 1N (X)
     when vs_double
     XX     Values: 6+ HCP, no suit to show
            shows hcp>=6
     P      Not enough to act over the double
            shows hcp<=5

   after 1N (X)
     when !vs_double
     2H     Weak: five or more hearts, running from the double
            shows H>=5, H>=S, hcp<=4
     2S     Weak: five or more spades, running from the double
            shows S>=5, hcp<=4
     2C     Weak: six or more clubs, running from the double
            shows C>=6, H<=4, S<=4, hcp<=4
     2D     Weak: six or more diamonds, running from the double
            shows D>=6, H<=4, S<=4, hcp<=4
     P      Sitting for the double

   after 1N (X) 2y (P)
     when !vs_double, y is not N
     P      Partner's escape: to play

   after 1N (X) XX (P)
     P      Playing 1NT redoubled

   after 1N (X) XX (*)
     when !rho.last=P
     P      Partner redoubled: his decision

   after 1N (X) XX (2y) P (P)
     X      Penalty
            shows y>=4 | hcp>=9
     P      No further bid

   after 1N (2y)
     when y is not C, rho.y>=4, maybe rho.H<=3 | maybe rho.S<=3
     X      Negative double: four cards in an unbid major, 5+ HCP  [alert]  [artificial]
            shows hcp>=5, S>=4 | H>=4
            when  y is D, S<=4, H<=4
     X      Negative double: four hearts, 5+ HCP  [alert]  [artificial]
            shows hcp>=5, H=4 | (H=5, points<=9)
            when  y is S
     X      Negative double: four spades, 5+ HCP  [alert]  [artificial]
            shows hcp>=5, S=4
            when  y is H
     2H     Natural, to play: five or more hearts
            shows H>=5, hcp>=4, points<=9
            when  y is D
     2S     Natural, to play: five or more spades
            shows S>=5, hcp>=4, points<=9
            when  y is D | y is H
     cheapest(C) Natural, forcing to game: five or more clubs
            shows C>=5, points>=10
     cheapest(D) Natural, forcing to game: five or more diamonds
            shows D>=5, points>=10
            when  y is not D
     3H     Natural, forcing to game: five or more hearts
            shows H>=5, points>=10
            when  y is S
     4H     Game: six or more hearts
            shows H>=6, hcp>=10
            when  y is not H, !texas
     4S     Game: six or more spades
            shows S>=6, hcp>=10
            when  y is not S, !texas
     2N     Invitational: 8-9 HCP, a stopper in {y}
            shows hcp=8..9, stop(y)
            when  !leb, !rub
     3N     Game: 10+ HCP
            shows hcp>=10
            when  !leb
     P      No bid over their overcall

   after 1N (2y) X (P)
     when y is not C, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3
     cheapest(H) Four hearts for partner's double
            shows H>=4
            when  y is not H
     cheapest(S) Four spades for partner's double
            shows S>=4
            when  y is not S
     2N     No four-card major, a stopper in {y}
            shows stop(y)
     P      Four of their suit: defends
            shows y>=4
     cheapest(C) No major, no stopper: four clubs
            shows C>=4
     cheapest(D) No major, no stopper: four diamonds
            shows D>=4
            when  y is not D
     cheapest(N) No four-card major

   after 1N (2y) X (P) 2M (P) | 1N (2y) X (P) 3M (P)
     when y is not C, rho.y>=4, maybe rho.H<=3 | maybe rho.S<=3
     4M     Game in the fit: 10+
            shows M>=4, points>=10
     3M     Invitational in the fit: 8-9
            shows M>=4, points=8..9
            when  partner.last=2M
     3N     Game, no fit: 10+
            shows M<=3, points>=10
     P      No game
            shows points<=9

   after 1N (2y) X (P) 2M (P) 3M (P)
     when y is not C, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3
     4M     Accepts the invitation: a maximum
            shows hcp>=16
     P      Declines: a minimum
            shows hcp<=15

   after 1N (2y) X (P) 2N (P) | 1N (2y) X (P) 3C (P) | 1N (2y) X (P) 3D (P)
     when y is not C, rho.y>=4, maybe rho.H<=3 | maybe rho.S<=3
     3N     Game: 10+
            shows points>=10
     P      No game
            shows points<=9

   after 1N (2y) 3z (P)
     when y is not C, z is not y, z is not N, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3
     4{z}   Three-card support: game in the major
            shows z>=3
            when  z is H | z is S
     3N     Game in notrump

   after 1N (2y) 2z (P)
     when y is not C, z is not N, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3
     P      Partner's suit, to play

   after 1N (2y) 2N (P)
     when !leb, !rub, y is not C, lho.y>=4, maybe lho.H<=3 | maybe lho.S<=3
     3N     Accepts: a maximum
            shows hcp>=16
     P      Declines: a minimum
            shows hcp<=15

   after 1N (2C)
     when !vs_2c, rho.C>=5
     2S     Natural, to play: five or more spades
            shows S>=5, S>=H, hcp>=4, points<=9
     2H     Natural, to play: five or more hearts
            shows H>=5, H>S, hcp>=4, points<=9
     2D     Natural, to play: five or more diamonds
            shows D>=5, H<=4, S<=4, hcp>=4, points<=9
     2N     Invitational: 8-9 HCP, a club stopper
            shows hcp=8..9, stop(C), H<=4, S<=4
     3N     Game: 10+ HCP, a club stopper
            shows hcp>=10, stop(C), H<=3, S<=3
     3C     Stayman cue-bid: a four-card major or no club stopper  [alert]  [artificial]
            shows hcp>=10, H<=4, S<=4, H=4 | S=4 | !stop(C)
     3D     Natural, forcing to game: five or more diamonds
            shows D>=5, points>=10
     3H     Natural, forcing to game: five or more hearts
            shows H>=5, H>S, points>=10
     3S     Natural, forcing to game: five or more spades
            shows S>=5, S>=H, points>=10
     4H     Game: six or more hearts
            shows H>=6, H>S, points>=9
            when  !texas
     4S     Game: six or more spades
            shows S>=6, S>=H, points>=9
            when  !texas
     P      No bid over their 2♣: weak, or length in clubs

   after 1N (2C) 2z (P)
     when !vs_2c, lho.C>=5, z is not N
     P      Partner's suit, to play

   after 1N (2C) 2N (P)
     when !vs_2c, lho.C>=5
     3N     Accepts: a maximum
            shows hcp>=16
     P      Declines: a minimum
            shows hcp<=15

   after 1N (2C) 3z (P)
     when !vs_2c, lho.C>=5, z is not C
     4{z}   Three-card support: game in the major
            shows z>=3
            when  z is H | z is S
     3N     Game in notrump

   after 1N (2C) 3C (P)
     when !vs_2c, lho.C>=5
     3H     Four hearts
            shows H>=4
     3S     Four spades, not four hearts
            shows S>=4, H<=3
     3N     No four-card major, a club stopper
            shows H<=3, S<=3, stop(C)
     3D     No four-card major, no club stopper
            shows H<=3, S<=3

   after 1N (2C) 3C (P) 3M (P)
     when !vs_2c, rho.C>=5
     4M     Game in the fit
            shows M>=4
     3S     Four spades, not four hearts
            shows S>=4
            when  M is H
     3N     No fit: game in notrump

   after 1N (2C) 3C (P) 3H (P) 3S (P)
     when !vs_2c, lho.C>=5
     4S     Four spades too: game in the fit
            shows S>=4
     3N     Game in notrump

   after 1N (2C) 3C (P) 3D (P)
     when !vs_2c, rho.C>=5
     3N     Game in notrump

   after 1N (2C) 3C (P) 3N (P) | 1N (2C) 3C (P) 3H (P) 3N (P) | 1N (2C) 3C (P) 3S (P) 3N (P)
     when !vs_2c
     P      No further bid

   after 1N (2C) 2M (3C)
     when !vs_2c, lho.C>=5
     3M     Four-card support: competing
            shows M>=4
     P      No further bid

   after 1N (2C) 2N (3C)
     when !vs_2c, lho.C>=5
     3N     Accepts: a maximum
            shows hcp>=16
     P      Declines: a minimum

   after 1N (2C) 2z (3C) | 1N (2C) 2z (4C)
     when !vs_2c, lho.C>=5
     P      No further bid

   after 1N (2C) 2M (3C) 3M (4C)
     when !vs_2c, rho.C>=5
     P      No further bid

   after 1N (2C) P (P)
     when !vs_2c, lho.C>=5
     X      Reopening double: two clubs or fewer
            shows C<=2

   after 1N (2C) P (P) X (P)
     when !vs_2c, rho.C>=5
     P      Four or more clubs: defends
            shows C>=4
     2N     8-9 HCP, a club stopper
            shows hcp>=8, stop(C), H<=3, S<=3
     2H     Four or more hearts
            shows H>=4, H>=S
     2S     Four or more spades
            shows S>=4, S>H
     2D     Four or more diamonds
            shows D>=4
     2D     Nothing better

   after 1N (2C) P (P) X (P) 2z (P)
     when !vs_2c, lho.C>=5, z is not N
     P      Partner's suit, to play

   after 1N (2C) P (P) X (P) 2N (P)
     when !vs_2c, lho.C>=5
     3N     Accepts: a maximum
            shows hcp>=16
     P      Declines: a minimum
            shows hcp<=15

   after 1N (2y)
     when y is not C, rho.H>=4, rho.S>=4
     X      Values: 8+ HCP
            shows hcp>=8
     3C     Natural, forcing to game: five or more clubs
            shows C>=5, points>=10
     3D     Natural, forcing to game: five or more diamonds
            shows D>=5, points>=10
     3N     Game: 10+, both majors held
            shows hcp>=10, stop(H), stop(S)
     P      No bid over their overcall

   after 1N (2y)
     when y is not C, maybe rho.y<=3, maybe rho.H<=3 | maybe rho.S<=3
     X      Values: 8+ HCP
            shows hcp>=8
     3N     Game: 10+ HCP
            shows hcp>=10
     P      No bid over their overcall

   after (any auction)
     when answered transfer(M), they.bid
     P      No further bid
            when  !passes_out_artificial

   after 1N (2C) X (2D)
     when vs_2c
     2H     4+ hearts
            shows H>=4
     2S     4 spades, not 4 hearts
            shows S>=4, H<=3
     X      Penalty: four or more diamonds, no major
            shows D>=4, H<=3, S<=3
     P      No 4-card major
            shows H<=3, S<=3

   after 1N (2y) 3z (P)
     when y is not C, lho.H>=4, lho.S>=4, z is C | z is D
     3N     Game in notrump

   after 1N (2y) X (P)
     when y is not C, (lho.H>=4, lho.S>=4) | (maybe lho.y<=3, maybe lho.H<=3 | maybe lho.S<=3)
     P      Defending their artificial overcall

   after 1N (2y) X (*)
     when !rho.last=P, !rho.last=X
     P      No further bid

   after 1N (2y) X (2z)
     when y is not C, (lho.H>=4, lho.S>=4) | (maybe lho.y<=3, maybe lho.H<=3 | maybe lho.S<=3)
     X      Penalty: four or more {z}
            shows z>=4
     P      No further bid

   after 1N (2y) X (2z) X (P)
     when y is not C, (rho.H>=4, rho.S>=4) | (maybe rho.y<=3, maybe rho.H<=3 | maybe rho.S<=3)
     P      Partner doubled for penalties: defend

   after 1N (2y) X (2z) P (P)
     when y is not C, (rho.H>=4, rho.S>=4) | (maybe rho.y<=3, maybe rho.H<=3 | maybe rho.S<=3)
     X      Penalty: four or more {z}
            shows z>=4
     3N     Game: 10+, {z} held
            shows hcp>=10, stop(z)
     P      No further bid

   after 1N (2N)
     X      Values: 8+ HCP
            shows hcp>=8
     3H     Natural, forcing to game: five or more hearts
            shows H>=5, points>=10
     3S     Natural, forcing to game: five or more spades
            shows S>=5, points>=10
     4H     Game: six or more hearts
            shows H>=6, hcp>=10
            when  !texas
     4S     Game: six or more spades
            shows S>=6, hcp>=10
            when  !texas
     3N     Game: 10+ HCP
            shows hcp>=10
     P      No bid over their 2NT

   after 1N (2N) 3z (P)
     when z is H | z is S
     4{z}   Three-card support: game in the major
            shows z>=3
     3N     Game in notrump

   after 1N (2y) P (P)
     P      No further bid

   after 1N (3y)
     when y is not N
     3N     Game: 9+, a stopper in {y}
            shows hcp>=9, stop(y)
     4H     Game: five or more hearts, 9+
            shows H>=5, hcp>=9
            when  y is not H, !texas | y is S
     4S     Game: five or more spades, 9+
            shows S>=5, hcp>=9
            when  y is not S
     X      Takeout: 9+, no stopper in {y}
            shows hcp>=9, y<=2
     P      No bid over their preempt

   after 1N (3y) X (P)
     when y is not N
     P      Four of their suit: defends
            shows y>=4
     3N     A stopper in {y}
            shows stop(y)
     cheapest(S) Four or more spades
            shows S>=4
            when  y is not S
     cheapest(H) Four or more hearts
            shows H>=4
            when  y is not H
     cheapest(D) Four or more diamonds
            shows D>=4
            when  y is not D
     cheapest(C) Four or more clubs
            shows C>=4
            when  y is not C
     3N     Game in notrump

   after 1N (3y) P (P)
     when y is not N
     P      No further bid

== nt-splinter: Splinters over 1NT
   file: conventions/notrump/nt-splinter.bid
   needs: notrump-base

   after 1N (P)
     3D     Splinter: 0-1 ♦, 4+ in each other suit, game values  [alert]  [artificial]
            shows D<=1, !has(A,D), !has(K,D), !has(Q,D), H=4, S=4, C>=4, strength>=game
            when  three_d is splinter
     3H     Splinter: 0-1 ♥, 4+ in each other suit, game values  [alert]  [artificial]
            shows H<=1, !has(A,H), !has(K,H), !has(Q,H), S=4, D>=4, C>=4, strength>=game
            when  major_splinter
     3S     Splinter: 0-1 ♠, 4+ in each other suit, game values  [alert]  [artificial]
            shows S<=1, !has(A,S), !has(K,S), !has(Q,S), H=4, D>=4, C>=4, strength>=game
            when  major_splinter

   after (any auction)
     when asked nt_splinter
     4S     Four spades: game in the fit
            shows S>=4
            when  partner.last=3D | partner.last=3H
     4H     Four hearts: game in the fit
            shows H>=4, S<=3 | partner.last=3S
            when  partner.last=3D | partner.last=3S
     3N     No major fit: 3NT

== notrump-base: 1NT opening and natural responses
   file: conventions/notrump/one-nt.bid
   needs: base
   skills: basic_bidding/notrump_openings, partnership_bidding/basic_notrump
   define auction nt1_undoubled = systems 1N (P)
   define auction nt1 = nt1_undoubled | [systems 1N (X) when lho.opened | rho.opened]
   systems on when call=1N | call=2N, maybe shown.balanced, shown.second_longest.min<=4, !me.named(C), !me.named(D), !me.named(H), !me.named(S), !me.named(N), !partner.opened, !partner.named(N), !(lho.opened | rho.opened) | systems_on, (me.opened, style is not bba) | (!partner.named(C), !partner.named(D), !partner.named(H), !partner.named(S))

   after (any auction)
     when opening
     1N     Notrump opening: {nt_min}-{nt_max} HCP, balanced  [announce: {nt_min} to {nt_max}]
            shows hcp=nt_min..nt_max, balanced, five_major is not never | (H<=4, S<=4)
     1N     Notrump opening: {nt_min}-{nt_max} HCP, balanced  [announce: {nt_min} to {nt_max}]
            shows hcp=nt_min-1, points>=nt_min, balanced, five_major is not never | (H<=4, S<=4)
            when  one_less
     1N     Notrump opening: {nt_min}-{nt_max} HCP, 5-4-2-2  [announce: {nt_min} to {nt_max}]
            shows hcp=nt_min..nt_max, shape 5-4-2-2, C=5 | D=5, S=2, H>=2, D>=2, C>=2, has(A,S) | has(K,S), H>=3 | has(A,H) | has(K,H), D>=3 | has(A,D) | has(K,D), C>=3 | has(A,C) | has(K,C)
            when  allow_5422
     1N     Notrump opening: {nt_min}-{nt_max} HCP, 4-4-4-1  [announce: {nt_min} to {nt_max}]
            shows hcp=nt_min..nt_max, shape 4-4-4-1, S>=2 | has(A,S) | has(K,S), H>=2 | has(A,H) | has(K,H), D>=2 | has(A,D) | has(K,D), C>=2 | has(A,C) | has(K,C)
            when  allow_4441

   after nt1
     when !they.bid | systems_on
     6N     To play: slam values
            shows balanced, points>=32-partner.hcp.min, H<=4, S<=4
     4N     Quantitative: invites 6NT
            shows balanced, strength=slam_invite, points<=31-partner.hcp.min, H<=4, S<=4
            when  quant_4nt, style is not bba
     3N     To play: {game} total points
            shows strength=game, H<=4, S<=4
            when  style is not bba
     2N     Invitational: {invite} total points
            shows strength=invite, H<=4, S<=4, C<=5, D<=5
            when  minors is not four_way, minors is not four_way_reversed, style is not bba, minors is not two_nt_three_c
     2N     Invitational: {invite} total points, a long minor
            shows strength=invite, H<=4, S<=4, C>=6 | D>=6
            when  minors is relay | minors is none
     3C     Slam try: six or more clubs, or five and unbalanced
            shows C>=6 | (C>=5, !balanced), strength>=slam_invite, H<=4, S<=4
            when  !three_c_transfer, minors is not bba, !puppet_1nt
     3D     Slam try: six or more diamonds, or five and unbalanced
            shows D>=6 | (D>=5, !balanced), strength>=slam_invite, H<=4, S<=4
            when  three_d is natural
     3N     No better call: {game} total points or more
            shows strength>=game
     P      No game interest: {signoff} total points
            shows strength=signoff
            when  style is not bba
     4N     Quantitative: invites 6NT
            shows balanced, strength=slam_invite, hcp>=33-partner.hcp.max, points<=31-partner.hcp.min, H<=4, S<=4
            when  quant_4nt, style is bba
     3N     To play: {game} total points
            shows H<=4, S<=4, bba_nt_game_points>=10, strength<=game
            when  matchpoints, style is bba, partner.hcp.min>=15, partner.hcp.max<=17
     3N     To play: game values
            shows H<=4, S<=4, bba_nt_imp_game_points>=10, strength<=game
            when  imps, style is bba, partner.hcp.min>=15, partner.hcp.max<=17
     3N     To play: {game} total points
            shows H<=4, S<=4, (strength=game, C<=3 | D<=3 | C>=5 | D>=5) | (C=4, D=4, hcp>=25-partner.hcp.min, hcp<=32-partner.hcp.max)
            when  matchpoints, style is bba, partner.hcp.min<=14 | partner.hcp.max>=18
     3N     To play: game values
            shows H<=4, S<=4, (points>=24-partner.hcp.min, points<=32-partner.hcp.max, C<=3 | D<=3 | C>=5 | D>=5) | (C=4, D=4, hcp>=24-partner.hcp.min, hcp<=32-partner.hcp.max)
            when  imps, style is bba, partner.hcp.min<=14 | partner.hcp.max>=18
     2N     Invitational: {invite} total points
            shows H<=4, S<=4, C<=5, D<=5, (strength=invite, C<=3 | D<=3 | C>=5 | D>=5, !shape 4333 | hcp<=24-partner.hcp.max | hcp>=26-partner.hcp.max | has(T,S) | has(T,H) | has(T,D) | has(T,C)) | (C=4, D=4, hcp>=25-partner.hcp.max, hcp<=24-partner.hcp.min)
            when  minors is not four_way, minors is not four_way_reversed, matchpoints, style is bba, partner.hcp.min<=14 | partner.hcp.max>=18
     2N     Invitational
            shows H<=4, S<=4, C<=5, D<=5, (points>=25-partner.hcp.max, points<=23-partner.hcp.min, C<=3 | D<=3 | C>=5 | D>=5, !shape 4333 | hcp<=24-partner.hcp.max | hcp>=26-partner.hcp.max | has(T,S) | has(T,H) | has(T,D) | has(T,C)) | (C=4, D=4, hcp>=25-partner.hcp.max, hcp<=23-partner.hcp.min)
            when  minors is not four_way, minors is not four_way_reversed, imps, style is bba, partner.hcp.min<=14 | partner.hcp.max>=18
     P      No game interest
            shows (strength=signoff, C<=3 | D<=3 | C>=5 | D>=5) | (C=4, D=4, hcp<=24-partner.hcp.max) | (shape 4333, hcp>=25-partner.hcp.max, hcp<=25-partner.hcp.max, !has(T,S), !has(T,H), !has(T,D), !has(T,C))
            when  style is bba, partner.hcp.min<=14 | partner.hcp.max>=18
     2N     Invitational: {invite} total points
            shows H<=4, S<=4, C<=5, D<=5, bba_nt_points>=8, bba_nt_game_points<=9, points>=25-partner.hcp.max
            when  minors is not four_way, minors is not four_way_reversed, matchpoints, style is bba, partner.hcp.min>=15, partner.hcp.max<=17
     2N     Invitational
            shows H<=4, S<=4, C<=5, D<=5, bba_nt_imp_points>=8, bba_nt_imp_game_points<=9, points>=24-partner.hcp.max
            when  minors is not four_way, minors is not four_way_reversed, imps, style is bba, partner.hcp.min>=15, partner.hcp.max<=17
     P      No game interest
            shows bba_nt_points<=7
            when  matchpoints, style is bba, partner.hcp.min>=15, partner.hcp.max<=17
     P      No game interest
            shows bba_nt_imp_points<=7
            when  imps, style is bba, partner.hcp.min>=15, partner.hcp.max<=17
     3S     Five or more spades, game forcing
            shows S>=5, S>=H, strength>=game
            when  !jacoby
     3H     Five or more hearts, game forcing
            shows H>=5, H>S, strength>=game
            when  !jacoby
     4S     To play: seven or more spades, short of a game force
            shows S>=7, S>=H, strength=invite
            when  !jacoby
     4H     To play: seven or more hearts, short of a game force
            shows H>=7, H>S, strength=invite
            when  !jacoby
     2S     To play: five or more spades, no game interest
            shows S>=5, S>=H, strength=signoff | (strength=invite, hcp<=6)
            when  !jacoby
     2H     To play: five or more hearts, no game interest
            shows H>=5, H>S, strength=signoff | (strength=invite, hcp<=6)
            when  !jacoby

   after nt1 2H (P) | nt1 2S (P)
     when !jacoby
     P      Partner's signoff

   after (any auction)
     when asked choose_game(M)
     4M     Three or more {M}: game in the fit
            shows M>=3
     3N     Two {M}: 3NT
            shows M<=2

   after (any auction)
     when answered choose_game(M), partner.last=3N
     6M     Slam: six or more {M}, slam values
            shows M>=6, strength>=slam
     6N     Slam values, no fit
            shows M<=5, strength>=slam
     4N     Quantitative, no fit
            shows M<=5, balanced, strength=slam_invite
            when  quant_4nt
     4M     Six or more {M}: game in the fit
            shows M>=6, strength<=slam_invite
     P      No fit: play 3NT
            shows M<=5, strength<=slam_invite

   after (any auction)
     when answered choose_game(M), partner.last=4{M}
     6M     Slam in the fit
            shows strength>=slam
     6M     Slam in the fit
            shows tp(M)>=33-partner.points.min
     P      Game in the fit
            shows strength<=slam_invite

   after 1N (P) 3C (P)
     when !three_c_transfer, minors is not bba, !puppet_1nt
     6C     Accepts: a club fit and a maximum
            shows C>=3, hcp>=17
     4C     A club fit, not a maximum: responder decides
            shows C>=3, hcp<=16
     3N     Declines: no club fit
            shows C<=2

   after 1N (P) 3D (P)
     when three_d is natural
     6D     Accepts: a diamond fit and a maximum
            shows D>=3, hcp>=17
     4D     A diamond fit, not a maximum: responder decides
            shows D>=3, hcp<=16
     3N     Declines: no diamond fit
            shows D<=2

   after 1N (P) 3C (P) 4C (P) | 1N (P) 3D (P) 4D (P)
     6{trump} Slam in the fit: 17+
            shows points>=17
     5{trump} Game in the fit
            shows points<=16

   after 1N (P) 3C (P) 3N (P) | 1N (P) 3D (P) 3N (P)
     6N     No fit, but slam values: {slam} total points
            shows strength>=slam
     P      No fit: 3NT

   after (any auction)
     when asked nt_invite
     4H     Accepts, in the 4-4 heart fit
            shows H>=4, strength>=game
            when  partner.H>=4
     4S     Accepts, in the 4-4 spade fit
            shows S>=4, strength>=game
            when  partner.S>=4
     3H     Declines, in the 4-4 heart fit
            shows H>=4, strength<=invite
            when  partner.H>=4
     3S     Declines, in the 4-4 spade fit
            shows S>=4, strength<=invite
            when  partner.S>=4
     3N     Accepts the invitation
            shows strength>=game
     P      Declines: not a maximum
            shows strength<=invite

   after (any auction)
     when answered nt_invite, partner.last=3H | partner.last=3S, style is not bba
     P      Partner declined: play three of the major

   after (any auction)
     when asked quant
     6N     Accepts the slam invitation
            shows points>=32-partner.points.min
            when  style is not bba | shown.hcp.min>=nt_max+1
     P      Declines: not enough for slam
            shows points<=31-partner.points.min
            when  style is not bba | shown.hcp.min>=nt_max+1
     6N     Accepts the slam invitation
            shows hcp>=33-partner.hcp.min
            when  style is bba, shown.hcp.max<=nt_max
     P      Declines: not enough for slam
            shows hcp<=32-partner.hcp.min
            when  style is bba, shown.hcp.max<=nt_max

   after 1N (2C)
     when vs_2c
     6N     To play: {slam} total points
            shows balanced, strength=slam, H<=4, S<=4
     4N     Quantitative: {slam_invite} total points, invites 6NT
            shows balanced, strength=slam_invite
            when  quant_4nt
     3N     To play: {game} total points
            shows strength=game, H<=4, S<=4
     2N     Invitational: {invite} total points
            shows strength=invite, H<=4, S<=4, C<=5, D<=5
            when  minors is not four_way, minors is not four_way_reversed
     3N     No better call: {game} total points or more
            shows strength>=game
     P      No bid over their 2♣

== puppet-1nt: Puppet Stayman over 1NT
   file: conventions/notrump/puppet-1nt.bid
   card: notrump.stayman.puppet_1nt
   needs: two-nt-responses
   skills: bidding_conventions/puppet_stayman

   after 1N (P)
     3C     Puppet Stayman: asks for a four- or five-card major  [alert]  [artificial]
            shows strength>=game, H<=4, S<=4, H>=3 | S>=3

   after 1N (P) 3C (P) 3D (P) 3N (P)
     P      No fit: 3NT

== smolen: Smolen: 5-4 in the majors after Stayman's denial
   file: conventions/notrump/smolen.bid
   card: notrump.smolen.play
   needs: stayman
   skills: bidding_conventions/smolen

   after (any auction)
     when answered majors, partner.H<=3, partner.S<=3
     3H     Smolen: four hearts, five spades, game forcing  [alert]  [artificial]
            shows H=4, S=5, strength>=game
            when  style is not bba
     3S     Smolen: four spades, five hearts, game forcing  [alert]  [artificial]
            shows S=4, H=5, strength>=game
            when  style is not bba
     3H     Smolen: four hearts, five spades, game forcing  [alert]  [artificial]
            shows H=4, S=5, hcp>=25-partner.hcp.min
            when  style is bba
     3S     Smolen: four spades, five hearts, game forcing  [alert]  [artificial]
            shows S=4, H=5, hcp>=25-partner.hcp.min
            when  style is bba

   after (any auction)
     when asked smolen(M)
     3S     Three spades and a maximum: slam interest
            shows S>=3, hcp>=shown.hcp.max
            when  M is S
     4{M}   Three {M}: game in the five-three fit
            shows M>=3
     3N     Two {M}: no fit, play 3NT
            shows M<=2

   after (any auction)
     when answered smolen(M), partner.last=3N
     6N     No fit, but slam values
            shows points>=32-partner.hcp.min
     P      No fit: 3NT

== stayman: Stayman
   file: conventions/notrump/stayman.bid
   card: notrump.stayman.play
   needs: notrump-base
   skills: bidding_conventions/stayman, partnership_bidding/stayman_transfers

   after nt1
     when !they.bid | systems_on
     2C     Stayman: asks for a 4-card major  [alert]  [artificial]
            shows strength>=invite, H=4 | S=4 | (minors is four_way | minors is four_way_reversed, strength=invite, C<=5, D<=5), H<=4 | S<=3 | strength>=game
            when  !shape 4333 | (minors is four_way | minors is four_way_reversed, strength=invite), style is not bba
     2C     Stayman: asks for a 4-card major  [alert]  [artificial]
            shows hcp>=24-partner.hcp.max, (H=4 | S=4, H<=5, S<=5, H<=4 | hcp>=25-partner.hcp.min) | (minors is four_way | minors is four_way_reversed, strength=invite, C<=5, D<=5)
            when  style is bba
     2C     Stayman: invitational with a five-card major  [alert]  [artificial]
            shows H>=5 | S>=5, strength=invite, hcp>=7
            when  !jacoby, style is not bba

   after nt1 2C (P)
     2H     4+ hearts
            shows H>=4
     2S     4 spades, not 4 hearts
            shows S>=4, H<=3
     2D     No 4-card major
            shows H<=3, S<=3

   after (any auction)
     when answered majors
     2S     Five spades, four hearts, invitational
            shows S=5, H=4, strength=invite
            when  partner.last=2D, style is not bba
     2S     Five spades, four hearts, invitational
            shows S=5, H=4, hcp>=23-partner.hcp.min, hcp<=24-partner.hcp.min
            when  partner.last=2D, style is bba
     2H     Five or more hearts, invitational
            shows H>=5, H>S, strength=invite
            when  partner.last=2D, !jacoby, style is not bba
     2S     Five or more spades, invitational
            shows S>=5, strength=invite
            when  partner.last=2D | partner.last=2H, !jacoby, style is not bba, H<=3
     3S     Five spades, game forcing
            shows S>=5, S>=H, strength>=game
            when  partner.last=2D, !jacoby, !smolen
     3H     Five hearts, game forcing
            shows H>=5, H>S, strength>=game
            when  partner.last=2D, !jacoby, !smolen
     6H     Slam in the heart fit
            shows H>=4, strength=slam
            when  partner.H>=4
     6S     Slam in the spade fit
            shows S>=4, strength=slam
            when  partner.S>=4
     4H     Game in the heart fit
            shows H>=4, strength>=game
            when  partner.H>=4, style is not bba
     3H     Invitational raise in hearts
            shows H>=4, strength=invite
            when  partner.H>=4, style is not bba
     4S     Game in the spade fit
            shows S>=4, strength>=game
            when  partner.S>=4, style is not bba
     3S     Invitational raise in spades
            shows S>=4, strength=invite
            when  partner.S>=4, style is not bba
     6H     Slam in the heart fit
            shows H>=4, tp(H)>=33-partner.points.min
            when  partner.H>=4
     6S     Slam in the spade fit
            shows S>=4, tp(S)>=33-partner.points.min
            when  partner.S>=4
     4H     Game in the heart fit
            shows H>=4, tp(H)>=25-partner.points.min
            when  partner.H>=4, strength<=invite, style is not bba
     4S     Game in the spade fit
            shows S>=4, tp(S)>=25-partner.points.min
            when  partner.S>=4, strength<=invite, style is not bba
     4H     Game in the heart fit
            shows H>=4, (hcp>=25-partner.hcp.min, !shape 4333) | hcp>=26-partner.hcp.min | (hcp>=24-partner.hcp.min, shortest<=0)
            when  partner.H>=4, matchpoints, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     4H     Game in the heart fit
            shows H>=4, (hcp>=24-partner.hcp.min, !shape 4333) | hcp>=25-partner.hcp.min | (hcp>=23-partner.hcp.min, shortest<=1) | (hcp>=22-partner.hcp.min, shortest<=0)
            when  partner.H>=4, imps, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     3H     Invitational raise in hearts
            shows H>=4, (hcp>=25-partner.hcp.max, !shape 4333) | hcp>=26-partner.hcp.max | (hcp>=24-partner.hcp.max, shortest<=1) | (hcp>=23-partner.hcp.max, shortest<=0), (hcp<=24-partner.hcp.min, shortest>=1) | (hcp<=25-partner.hcp.min, shape 4333) | hcp<=23-partner.hcp.min
            when  partner.H>=4, matchpoints, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     3H     Invitational raise in hearts
            shows H>=4, (hcp>=25-partner.hcp.max, !shape 4333) | hcp>=26-partner.hcp.max | (hcp>=24-partner.hcp.max, shortest<=1) | (hcp>=23-partner.hcp.max, shortest<=0), (hcp<=23-partner.hcp.min, shortest>=2) | (hcp<=24-partner.hcp.min, shape 4333) | (hcp<=22-partner.hcp.min, shortest=1) | hcp<=21-partner.hcp.min
            when  partner.H>=4, imps, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     P      Weak with the heart fit: play here
            shows H>=4, (hcp<=24-partner.hcp.max, shortest>=2) | (hcp<=25-partner.hcp.max, shape 4333) | (hcp<=23-partner.hcp.max, shortest=1) | hcp<=22-partner.hcp.max
            when  partner.H>=4, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     4S     Game in the spade fit
            shows S>=4, (hcp>=25-partner.hcp.min, !shape 4333) | hcp>=26-partner.hcp.min | (hcp>=24-partner.hcp.min, shortest<=0)
            when  partner.S>=4, matchpoints, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     4S     Game in the spade fit
            shows S>=4, (hcp>=24-partner.hcp.min, !shape 4333) | hcp>=25-partner.hcp.min | (hcp>=23-partner.hcp.min, shortest<=1) | (hcp>=22-partner.hcp.min, shortest<=0)
            when  partner.S>=4, imps, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     3S     Invitational raise in spades
            shows S>=4, (hcp>=25-partner.hcp.max, !shape 4333) | hcp>=26-partner.hcp.max | (hcp>=24-partner.hcp.max, shortest<=1) | (hcp>=23-partner.hcp.max, shortest<=0), (hcp<=24-partner.hcp.min, shortest>=1) | (hcp<=25-partner.hcp.min, shape 4333) | hcp<=23-partner.hcp.min
            when  partner.S>=4, matchpoints, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     3S     Invitational raise in spades
            shows S>=4, (hcp>=25-partner.hcp.max, !shape 4333) | hcp>=26-partner.hcp.max | (hcp>=24-partner.hcp.max, shortest<=1) | (hcp>=23-partner.hcp.max, shortest<=0), (hcp<=23-partner.hcp.min, shortest>=2) | (hcp<=24-partner.hcp.min, shape 4333) | (hcp<=22-partner.hcp.min, shortest=1) | hcp<=21-partner.hcp.min
            when  partner.S>=4, imps, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     P      Weak with the spade fit: play here
            shows S>=4, (hcp<=24-partner.hcp.max, shortest>=2) | (hcp<=25-partner.hcp.max, shape 4333) | (hcp<=23-partner.hcp.max, shortest=1) | hcp<=22-partner.hcp.max
            when  partner.S>=4, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     6N     Slam: 17 or more, no fit found
            shows points>=32-partner.hcp.min
            when  style is not bba
     4N     Quantitative, no fit found
            shows balanced, strength=slam_invite, points<=31-partner.hcp.min
            when  quant_4nt, style is not bba
     3N     Game: {game} total points, no fit found
            shows strength=game
            when  style is not bba
     2N     Invitational: {invite} total points, no fit found
            shows strength=invite
            when  style is not bba
     4H     Game in the heart fit
            shows H>=4, bba_stay_game_points>=10
            when  partner.H>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3H     Invitational raise in hearts
            shows H>=4, bba_stay_raise_points>=8, bba_stay_game_points<=9
            when  partner.H>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Weak with the heart fit: play here
            shows H>=4, bba_stay_raise_points<=7
            when  partner.H>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4H     Game in the heart fit
            shows H>=4, bba_stay_game_imp_points>=10
            when  partner.H>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3H     Invitational raise in hearts
            shows H>=4, bba_stay_raise_imp_points>=8, bba_stay_game_imp_points<=9
            when  partner.H>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Weak with the heart fit: play here
            shows H>=4, bba_stay_raise_imp_points<=7
            when  partner.H>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4S     Game in the spade fit
            shows S>=4, bba_stay_sgame_points>=10
            when  partner.S>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3S     Invitational raise in spades
            shows S>=4, bba_stay_sraise_points>=8, bba_stay_sgame_points<=9
            when  partner.S>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Weak with the spade fit: play here
            shows S>=4, bba_stay_sraise_points<=7
            when  partner.S>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4S     Game in the spade fit
            shows S>=4, bba_stay_sgame_imp_points>=10
            when  partner.S>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3S     Invitational raise in spades
            shows S>=4, bba_stay_sraise_imp_points>=8, bba_stay_sgame_imp_points<=9
            when  partner.S>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Weak with the spade fit: play here
            shows S>=4, bba_stay_sraise_imp_points<=7
            when  partner.S>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     6N     Slam: 17 or more, no fit found
            shows points>=32-partner.hcp.min
            when  style is bba
     4N     Quantitative, no fit found
            shows balanced, strength=slam_invite, hcp>=33-partner.hcp.max, points<=31-partner.hcp.min
            when  quant_4nt, style is bba
     3N     Game: {game} total points, no major fit
            shows strength=game
            when  partner.H<=3, partner.S<=3, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     2N     Invitational, no major fit
            shows points>=24-partner.hcp.max, strength<=invite
            when  partner.H<=3, partner.S<=3, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     3N     Game, no heart fit
            shows H<=3, hcp>=10 | (hcp=9, tens>=2), strength<=game
            when  partner.H>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     2N     Invitational, no heart fit
            shows H<=3, hcp>=7, hcp<=9, hcp<=8 | tens<=1, H<=2 | hcp>=8 | tens>=1
            when  partner.H>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Weak, three hearts: play here
            shows H=3, hcp<=7, tens=0
            when  partner.H>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3N     Game, no heart fit
            shows H<=3, hcp>=10 | (hcp=9, tens>=1 | shortest<=1), strength<=game
            when  partner.H>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     2N     Invitational, no heart fit
            shows H<=3, hcp>=7, hcp<=9, hcp<=8 | (tens=0, shortest>=2), H<=2 | hcp>=8 | tens>=2
            when  partner.H>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Weak, three hearts: play here
            shows H=3, hcp<=7, tens<=1
            when  partner.H>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3N     Game, no spade fit
            shows S<=3, hcp>=10 | (hcp=9, tens>=2), strength<=game
            when  partner.S>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     2N     Invitational, no spade fit
            shows S<=3, hcp>=7, hcp<=9, hcp<=8 | tens<=1, S<=2 | hcp>=8 | tens>=1
            when  partner.S>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Weak, three spades: play here
            shows S=3, hcp<=7, tens=0
            when  partner.S>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3N     Game, no spade fit
            shows S<=3, hcp>=10 | (hcp=9, tens>=1 | shortest<=1), strength<=game
            when  partner.S>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     2N     Invitational, no spade fit
            shows S<=3, hcp>=7, hcp<=9, hcp<=8 | (tens=0, shortest>=2), S<=2 | hcp>=8 | tens>=2
            when  partner.S>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Weak, three spades: play here
            shows S=3, hcp<=7, tens<=1
            when  partner.S>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3N     Game: {game} total points, no heart fit
            shows strength=game, H<=3
            when  partner.H>=4, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     3N     Game: {game} total points, no spade fit
            shows strength=game, S<=3
            when  partner.S>=4, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     2N     Invitational, no heart fit
            shows points>=24-partner.hcp.max, strength<=invite, H<=3
            when  partner.H>=4, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     2N     Invitational, no spade fit
            shows points>=24-partner.hcp.max, strength<=invite, S<=3
            when  partner.S>=4, partner.hcp.min<=14 | partner.hcp.max>=18, style is bba
     3N     Game: {game} total points, no major fit
            shows bba_stay_nt_points>=10, strength<=game
            when  partner.H<=3, partner.S<=3, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     2N     Invitational, no major fit
            shows points>=24-partner.hcp.max, bba_stay_nt_points<=9
            when  partner.H<=3, partner.S<=3, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3N     Game: {game} total points, no major fit
            shows bba_stay_nt_imp_points>=10, strength<=game
            when  partner.H<=3, partner.S<=3, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     2N     Invitational, no major fit
            shows points>=24-partner.hcp.max, bba_stay_nt_imp_points<=9
            when  partner.H<=3, partner.S<=3, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3C     Game values, five or more clubs
            shows C>=5, C>=D, (hcp>=9, !stop(D) | C>=6) | hcp>=12
            when  partner.H<=3, partner.S<=3, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3D     Game values, five or more diamonds
            shows D>=5, D>C, (hcp>=9, !stop(D) | D>=6) | hcp>=12
            when  partner.H<=3, partner.S<=3, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3C     Game values, five or more clubs, no heart fit
            shows C>=5, C>=D, H<=3, hcp>=10 | (C>=6, hcp>=9)
            when  partner.H>=4, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3D     Game values, five or more diamonds, no heart fit
            shows D>=5, D>C, H<=3, hcp>=10 | (D>=6, hcp>=9)
            when  partner.H>=4, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3C     Game values, five or more clubs, no spade fit
            shows C>=5, C>=D, S<=3, hcp>=10 | (C>=6, hcp>=9)
            when  partner.S>=4, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     3D     Game values, five or more diamonds, no spade fit
            shows D>=5, D>C, S<=3, hcp>=10 | (D>=6, hcp>=9)
            when  partner.S>=4, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Six diamonds, weak: play 2D
            shows D>=6, hcp<=8
            when  partner.H<=3, partner.S<=3, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Three hearts and a six-card minor, weak: play 2H
            shows H=3, C>=6 | D>=6, hcp<=8
            when  partner.H>=4, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     P      Three spades and a six-card minor, weak: play 2S
            shows S=3, C>=6 | D>=6, hcp<=8
            when  partner.S>=4, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4C     Slam try, six or more clubs
            shows C>=6, C>=D, hcp>=13
            when  partner.H<=3, partner.S<=3, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4D     Slam try, six or more diamonds
            shows D>=6, D>C, hcp>=13
            when  partner.H<=3, partner.S<=3, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4C     Slam try, six or more clubs
            shows C>=6, C>=D, hcp>=12
            when  partner.H<=3, partner.S<=3, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4D     Slam try, six or more diamonds
            shows D>=6, D>C, hcp>=12
            when  partner.H<=3, partner.S<=3, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4C     Slam try, six or more clubs, no heart fit
            shows H<=3, C>=6, C>=D, hcp>=13
            when  partner.H>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4D     Slam try, six or more diamonds, no heart fit
            shows H<=3, D>=6, D>C, hcp>=13
            when  partner.H>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4C     Slam try, six or more clubs, no heart fit
            shows H<=3, C>=6, C>=D, hcp>=12
            when  partner.H>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4D     Slam try, six or more diamonds, no heart fit
            shows H<=3, D>=6, D>C, hcp>=12
            when  partner.H>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4C     Slam try, six or more clubs, no spade fit
            shows S<=3, C>=6, C>=D, hcp>=13
            when  partner.S>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4D     Slam try, six or more diamonds, no spade fit
            shows S<=3, D>=6, D>C, hcp>=13
            when  partner.S>=4, matchpoints, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4C     Slam try, six or more clubs, no spade fit
            shows S<=3, C>=6, C>=D, hcp>=12
            when  partner.S>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba
     4D     Slam try, six or more diamonds, no spade fit
            shows S<=3, D>=6, D>C, hcp>=12
            when  partner.S>=4, imps, partner.hcp.min>=15, partner.hcp.max<=17, style is bba

   after (any auction)
     when asked fit_invite(M)
     4M     Accepts: a maximum
            shows points>=shown.hcp.max | (M>=5, points>=shown.hcp.max-1)
     P      Declines: not a maximum
            shows points<=shown.hcp.max-1, M<=4 | points<=shown.hcp.max-2

   after (any auction)
     when asked spades_invite
     4S     Accepts, three spades
            shows S>=3, hcp>=shown.hcp.max-1
     3N     Accepts, two spades
            shows S<=2, hcp>=shown.hcp.max-1
     P      Declines: a minimum
            shows hcp<=shown.hcp.max-2

   after 1N (P) 2C (P) 2H (P) 2N (P) 3S (P)
     when style is bba
     4S     Game in the spade fit: the top of the invitation
            shows S>=4, hcp>=26-partner.hcp.max
     P      Minimum: play 3S
            shows hcp<=25-partner.hcp.max

   after 1N (X)
     when vs_double
     2C     Stayman: asks for a 4-card major  [alert]  [artificial]
            shows hcp>=24-partner.hcp.max, H=4 | S=4
            when  H<=4, S<=4

   after 1N (2C)
     when vs_2c
     X      Stayman: asks for a 4-card major  [alert]  [artificial]
            shows strength>=invite, H=4 | S=4
            when  H<=4, S<=4

   after 1N (X) 2C (P)
     when vs_double
     2H     4+ hearts
            shows H>=4
     2S     4 spades, not 4 hearts
            shows S>=4, H<=3
     2D     No 4-card major
            shows H<=3, S<=3

   after 1N (2C) X (P)
     when vs_2c
     2H     4+ hearts
            shows H>=4
     2S     4 spades, not 4 hearts
            shows S>=4, H<=3
     2D     No 4-card major
            shows H<=3, S<=3

   after 1N (P) 2C (P) 2D (P) 3C (P)
     when style is bba
     5C     Fit, a suit open, a maximum
            shows C>=4, !stop(D) | (S=2, !stop(S)) | (H=2, !stop(H)), points>=17
     4C     Fit, a suit open
            shows C>=4 | (C=3, points>=16), !stop(D) | (S=2, !stop(S)) | (H=2, !stop(H))
     4C     Fit, a flat minimum
            shows C>=4, shortest>=3, points<=15
     3D     Minimum, no club fit
            shows C<=3, points<=15
     3N     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2D (P) 3D (P)
     when style is bba
     5D     Fit, a suit open, a maximum
            shows D>=3, !stop(C) | (S=2, !stop(S)) | (H=2, !stop(H)), points>=17
     4D     Fit, a suit open
            shows D>=4 | D=3, !stop(C) | (S=2, !stop(S)) | (H=2, !stop(H))
     4D     Fit, a flat minimum
            shows D>=3, shortest>=3, points<=15
     4C     Minimum, five clubs
            shows D<=2, C>=5, points<=15
     3N     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2H (P) 3C (P)
     when style is bba
     5C     Fit, a suit open, a maximum
            shows C>=4, !stop(D), points>=17
     4C     Fit, a suit open
            shows C>=4 | (C=3, points>=16), !stop(D)
     4C     Fit, a flat minimum
            shows C>=3, shortest>=3, points<=15
     3D     Minimum, four diamonds
            shows D>=4, points<=15
     3N     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2H (P) 3D (P)
     when style is bba
     5D     Fit, a suit open, a maximum
            shows D>=3, !stop(C), points>=17
     4D     Fit, a suit open
            shows D>=4 | D=3, !stop(C)
     4D     Fit, a flat minimum
            shows D>=3, shortest>=3, points<=15
     3N     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2S (P) 3C (P)
     when style is bba
     5C     Fit, a suit open, a maximum
            shows C>=4, !stop(D), points>=17
     4C     Fit, a suit open
            shows C>=4 | (C=3, points>=16), !stop(D)
     4C     Fit, a flat minimum
            shows C>=3, shortest>=3, points<=15
     3D     Minimum, four diamonds
            shows D>=4, points<=15
     3H     Minimum, flat, three hearts
            shows H=3, shortest>=3, points<=15
     3N     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2S (P) 3D (P)
     when style is bba
     3H     Minimum, flat, three hearts
            shows H=3, shortest>=3, points<=15
     5D     Fit, a suit open, a maximum
            shows D>=3, !stop(C), points>=17
     4D     Fit, a suit open
            shows D>=4 | D=3, !stop(C)
     4D     Fit, a flat minimum
            shows D>=3, shortest>=3, points<=15
     3N     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2D (P) 3C (P) 4C (P)
     when style is bba
     5C     Game in the minor
            shows hcp>=11
     P      Too weak for game
            shows hcp<=10

   after 1N (P) 2C (P) 2D (P) 3D (P) 4D (P)
     when style is bba
     5D     Game in the minor
            shows hcp>=11
     P      Too weak for game
            shows hcp<=10

   after 1N (P) 2C (P) 2H (P) 3C (P) 4C (P)
     when style is bba
     5C     Game in the minor
            shows hcp>=11
     P      Too weak for game
            shows hcp<=10

   after 1N (P) 2C (P) 2H (P) 3D (P) 4D (P)
     when style is bba
     5D     Game in the minor
            shows hcp>=11
     P      Too weak for game
            shows hcp<=10

   after 1N (P) 2C (P) 2S (P) 3C (P) 4C (P)
     when style is bba
     5C     Game in the minor
            shows hcp>=11
     P      Too weak for game
            shows hcp<=10

   after 1N (P) 2C (P) 2S (P) 3D (P) 4D (P)
     when style is bba
     5D     Game in the minor
            shows hcp>=11
     P      Too weak for game
            shows hcp<=10

   after 1N (P) 2C (P) 2D (P) 3C (P) 3D (P) | 1N (P) 2C (P) 2H (P) 3C (P) 3D (P) | 1N (P) 2C (P) 2S (P) 3C (P) 3D (P) | 1N (P) 2C (P) 2S (P) 3C (P) 3H (P) | 1N (P) 2C (P) 2S (P) 3D (P) 3H (P)
     when style is bba
     3N     To play
            shows hcp>=9, hcp<=14
     4N     Quantitative
            shows hcp>=15
            when  quant_4nt

   after 1N (P) 2C (P) 2D (P) 3D (P) 4C (P)
     when style is bba
     4H     Four hearts
            shows H>=4
     4S     Four spades
            shows S>=4

   after 1N (P) 2C (P) 2D (P) 4C (P)
     when style is bba
     4D     Five diamonds, two clubs
            shows C<=2, D>=5
     5C     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2D (P) 4D (P)
     when style is bba
     5C     Five clubs, two diamonds
            shows D<=2, C>=5
     5D     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2D (P) 4C (P) 5C (P)
     when style is bba
     6C     Slam
            shows hcp>=14
     P      Game is enough
            shows hcp<=13

   after 1N (P) 2C (P) 2D (P) 4D (P) 5D (P)
     when style is bba
     6D     Slam
            shows hcp>=14
     P      Game is enough
            shows hcp<=13

   after 1N (P) 2C (P) 2D (P) 4C (P) 4D (P)
     when style is bba
     6C     Slam
            shows hcp>=14
     5C     Game
            shows hcp<=13

   after 1N (P) 2C (P) 2D (P) 4D (P) 5C (P)
     when style is bba
     6D     Slam
            shows hcp>=14
     5D     Game
            shows hcp<=13

   after 1N (P) 2C (P) 2H (P) 4C (P)
     when style is bba
     4D     Five diamonds, two clubs
            shows C<=2, D>=5
     5C     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2H (P) 4D (P)
     when style is bba
     5C     Five clubs, two diamonds
            shows D<=2, C>=5
     5D     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2H (P) 4C (P) 5C (P)
     when style is bba
     6C     Slam
            shows hcp>=14
     P      Game is enough
            shows hcp<=13

   after 1N (P) 2C (P) 2H (P) 4D (P) 5D (P)
     when style is bba
     6D     Slam
            shows hcp>=14
     P      Game is enough
            shows hcp<=13

   after 1N (P) 2C (P) 2H (P) 4C (P) 4D (P)
     when style is bba
     6C     Slam
            shows hcp>=14
     5C     Game
            shows hcp<=13

   after 1N (P) 2C (P) 2H (P) 4D (P) 5C (P)
     when style is bba
     6D     Slam
            shows hcp>=14
     5D     Game
            shows hcp<=13

   after 1N (P) 2C (P) 2S (P) 4C (P)
     when style is bba
     4D     Five diamonds, two clubs
            shows C<=2, D>=5
     5C     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2S (P) 4D (P)
     when style is bba
     5C     Five clubs, two diamonds
            shows D<=2, C>=5
     5D     To play
            shows hcp>=15

   after 1N (P) 2C (P) 2S (P) 4C (P) 5C (P)
     when style is bba
     6C     Slam
            shows hcp>=14
     P      Game is enough
            shows hcp<=13

   after 1N (P) 2C (P) 2S (P) 4D (P) 5D (P)
     when style is bba
     6D     Slam
            shows hcp>=14
     P      Game is enough
            shows hcp<=13

   after 1N (P) 2C (P) 2S (P) 4C (P) 4D (P)
     when style is bba
     6C     Slam
            shows hcp>=14
     5C     Game
            shows hcp<=13

   after 1N (P) 2C (P) 2S (P) 4D (P) 5C (P)
     when style is bba
     6D     Slam
            shows hcp>=14
     5D     Game
            shows hcp<=13

== super-accept: Super-accepting a Jacoby transfer
   file: conventions/notrump/super-accept.bid
   card: notrump.transfers.super_accept
   needs: jacoby-transfers
   skills: bidding_conventions/super_accept

   after nt1 2D (P)
     when system is not brill
     3H     Super-accept: 4+ hearts, a maximum
            shows H>=4, hcp>=16

   after nt1 2H (P)
     when system is not brill
     3S     Super-accept: 4+ spades, a maximum
            shows S>=4, hcp>=16

   after nt1 2D (P)
     when system is brill
     3H     Four or more hearts, a minimum
            shows H>=4, hcp<=15, shortest<=2

   after nt1 2H (P)
     when system is brill
     3S     Four or more spades, a minimum
            shows S>=4, hcp<=15, shortest<=2

== superaccept-doubleton: Superaccept doubleton
   file: conventions/notrump/superaccept-doubleton.bid
   card: notrump.transfers.super_accept_doubleton
   needs: super-accept
   skills: bidding_conventions/super_accept

   after nt1 2D (P)
     2S     Super-accept: 4+ hearts, maximum, doubleton spade  [alert]  [artificial]
            shows H>=4, hcp>=16, S=2, !has(Q,S)
     2N     Super-accept: 4+ hearts, maximum, a doubleton  [alert]  [artificial]
            shows H>=4, hcp>=16, shortest=2

   after nt1 2H (P)
     2N     Super-accept: 4+ spades, maximum, a doubleton  [alert]  [artificial]
            shows S>=4, hcp>=16, shortest=2

   after nt1 2D (P)
     when system is brill
     2N     Super-accept: 4 hearts, maximum, 3=4=3=3  [alert]  [artificial]
            shows H=4, S=3, D=3, C=3, hcp>=16

   after nt1 2H (P)
     when system is brill
     2N     Super-accept: 4 spades, maximum, 4=3=3=3  [alert]  [artificial]
            shows S=4, H=3, D=3, C=3, hcp>=16

== texas-transfers: Texas Transfers
   file: conventions/notrump/texas-transfers.bid
   card: notrump.transfers.texas
   needs: notrump-base
   skills: bidding_conventions/jacoby_transfers
   define texas_room_d = !tu, !me.named(H), rho.last=P | rho.last=X | (they.level<=2, they.strain is not H) | (they.level=3, they.strain is C)
   define texas2_room_c = tu, !me.named(H), rho.last=P | rho.last=X | (they.level<=2, they.strain is not H)
   define texas2_room_d = tu, !me.named(S), rho.last=P | rho.last=X | (they.level<=2, they.strain is not S) | (they.level=3, they.strain is C)
   define texas_room_h = !tu, !me.named(S), rho.last=P | rho.last=X | (they.level<=2, they.strain is not S) | (they.level=3, they.strain is C | they.strain is D)

   after systems 1N (*) | systems 2N (*) | 2C (*) 2D (*) 3N (P)
     4D     Texas: 6+ ♥, game only or slam values  [announce: Transfer]  [artificial]
            shows H>=6, points>=25-partner.points.min, suit_points<=30-partner.points.max
            when  texas_room_d
     4D     Texas: 6+ ♥, game only or slam values  [announce: Transfer]  [artificial]
            shows H>=6, suit_points>=33-partner.points.min
            when  texas_room_d
     4D     Texas: 6+ ♥, game only or slam values  [announce: Transfer]  [artificial]
            shows H>=6, tp(H)>=33-partner.points.min
            when  texas_room_d
     4H     Texas: 6+ ♠, game only or slam values  [announce: Transfer]  [artificial]
            shows S>=6, points>=25-partner.points.min, suit_points<=30-partner.points.max
            when  texas_room_h
     4H     Texas: 6+ ♠, game only or slam values  [announce: Transfer]  [artificial]
            shows S>=6, suit_points>=33-partner.points.min
            when  texas_room_h
     4H     Texas: 6+ ♠, game only or slam values  [announce: Transfer]  [artificial]
            shows S>=6, tp(S)>=33-partner.points.min
            when  texas_room_h
     4D     Texas: 6+ ♥, game only or slam values  [announce: Transfer]  [artificial]
            shows H>=7, hcp>=4, suit_strength=signoff
            when  !(rho.last=P | rho.last=X), texas_room_d
     4H     Texas: 6+ ♠, game only or slam values  [announce: Transfer]  [artificial]
            shows S>=7, hcp>=4, suit_strength=signoff
            when  !(rho.last=P | rho.last=X), texas_room_h
     4C     2-under Texas: 6+ ♥, game only or slam values  [announce: Transfer]  [artificial]
            shows H>=6, points>=25-partner.points.min, suit_points<=30-partner.points.max
            when  texas2_room_c
     4C     2-under Texas: 6+ ♥, game only or slam values  [announce: Transfer]  [artificial]
            shows H>=6, suit_points>=33-partner.points.min
            when  texas2_room_c
     4C     2-under Texas: 6+ ♥, game only or slam values  [announce: Transfer]  [artificial]
            shows H>=6, tp(H)>=33-partner.points.min
            when  texas2_room_c
     4D     2-under Texas: 6+ ♠, game only or slam values  [announce: Transfer]  [artificial]
            shows S>=6, points>=25-partner.points.min, suit_points<=30-partner.points.max
            when  texas2_room_d
     4D     2-under Texas: 6+ ♠, game only or slam values  [announce: Transfer]  [artificial]
            shows S>=6, suit_points>=33-partner.points.min
            when  texas2_room_d
     4D     2-under Texas: 6+ ♠, game only or slam values  [announce: Transfer]  [artificial]
            shows S>=6, tp(S)>=33-partner.points.min
            when  texas2_room_d
     4C     2-under Texas: 6+ ♥, game only or slam values  [announce: Transfer]  [artificial]
            shows H>=7, hcp>=4, suit_strength=signoff
            when  !(rho.last=P | rho.last=X), texas2_room_c
     4D     2-under Texas: 6+ ♠, game only or slam values  [announce: Transfer]  [artificial]
            shows S>=7, hcp>=4, suit_strength=signoff
            when  !(rho.last=P | rho.last=X), texas2_room_d

   after (any auction)
     when asked texas(H)
     4H     Completes the transfer

   after (any auction)
     when asked texas(S)
     4S     Completes the transfer

   after (any auction)
     when answered texas(M)
     4N     Keycard ask in {M}  [artificial]
            shows suit_points>=33-partner.points.min
     4N     Keycard ask in {M}  [artificial]
            shows tp(M)>=33-partner.points.min
     P      No slam interest

   after (any auction)
     when asked texas2(H)
     4D     Super-accept: four hearts, a maximum  [artificial]
            shows H>=4, hcp>=shown.hcp.max-1
     4H     Completes the transfer

   after (any auction)
     when asked texas2(S)
     4H     Super-accept: four spades, a maximum  [artificial]
            shows S>=4, hcp>=shown.hcp.max-1
     4S     Completes the transfer

   after (any auction)
     when answered texas2(M)
     4N     Keycard ask in {M}  [artificial]
            shows suit_points>=33-partner.points.min
     4N     Keycard ask in {M}  [artificial]
            shows tp(M)>=33-partner.points.min
     4{M}   Signoff
            when  !partner.last=4{M}
     P      No slam interest
            when  partner.last=4{M}

== two-nt-minors: Minor-suit transfers and Minor Suit Stayman over 2NT
   file: conventions/notrump/two-nt-minors.bid
   needs: two-nt-responses
   skills: bidding_conventions/minor_suit_transfers, bidding_conventions/minor_suit_stayman

   after nt2
     when mst, !mss
     3S     Relay to 4♣: six or more of a minor, weak  [alert]  [artificial]
            shows C>=6 | D>=6, H<=3, S<=3, hcp<=24-partner.hcp.max
            when  !we.forcing=game

   after nt2 3S (P)
     when mst, !mss
     4C     Completes the relay  [alert]  [artificial]

   after nt2 3S (P) 4C (P)
     when mst, !mss
     P      To play: clubs
            shows C>=6, hcp<=24-partner.hcp.max
     4D     To play: diamonds
            shows D>=6, D>C, hcp<=24-partner.hcp.max
     5C     Game: clubs
            shows C>=6, C>=D, hcp>=25-partner.hcp.max
     5D     Game: diamonds
            shows D>=6, D>C, hcp>=25-partner.hcp.max

   after nt2 3S (P) 4C (P) 4D (P)
     when mst, !mss
     P      Partner's diamonds, to play

   after nt2
     when mss
     3S     Minor Suit Stayman: 5-4+ in the minors, slam interest  [alert]  [artificial]
            shows C>=4, D>=4, C+D>=9, H<=3, S<=3, strength>=slam_invite

   after nt2 3S (P)
     when mss
     4C     Four or more clubs
            shows C>=4
     4D     Four or more diamonds, not four clubs
            shows D>=4, C<=3
     3N     No four-card minor  [alert]  [artificial]
            shows C<=3, D<=3

   after nt2 3S (P) 4m (P)
     when mss
     4N     Keycard ask in {m}  [alert]  [artificial]
            shows tp(m)>=33-partner.hcp.min
            when  k1430 | k0314
     6m     Slam in the minor fit
            shows tp(m)>=33-partner.hcp.min
     5m     Game in the minor fit

   after nt2 3S (P) 3N (P)
     when mss
     4C     Gerber: how many aces?  [alert]  [artificial]
            shows points>=32-partner.hcp.min
            when  gerber
     6N     No fit: slam values
            shows points>=32-partner.hcp.min
     6C     Slam in my long clubs
            shows C>=6, points>=32-partner.hcp.min
     6D     Slam in my long diamonds
            shows D>=6, points>=32-partner.hcp.min
     4N     No fit: quantitative, invites 6NT
            shows strength=slam_invite, points<=31-partner.hcp.min
     P      No fit: 3NT

== two-nt-responses: Responses to a 2NT opening
   file: conventions/notrump/two-nt-responses.bid
   needs: notrump-base
   skills: partnership_bidding/basic_notrump, bidding_conventions/stayman, bidding_conventions/jacoby_transfers
   define auction nt2 = systems 2N (P)

   after nt2
     3C     Stayman: asks for a four-card major  [alert]  [artificial]
            shows H=4 | S=4, strength>=game
            when  stayman, !puppet, !shape 4333, style is not bba
     3D     Transfer to hearts  [announce: Transfer]  [artificial]
            shows H>=5
            when  jacoby
     3H     Transfer to spades  [announce: Transfer]  [artificial]
            shows S>=5
            when  jacoby
     3N     To play: {game} total points
            shows strength>=game, H<=4, S<=4
            when  style is not bba
     4N     Quantitative: {slam_invite} total points, invites 6NT
            shows balanced, strength=slam_invite
            when  quant_4nt, style is not bba
     6N     Slam: {slam} total points
            shows balanced, strength=slam
            when  style is not bba
     P      No game: {signoff}-{invite} total points
            shows strength<=invite
            when  style is not bba
     3C     Stayman: asks for a four-card major  [alert]  [artificial]
            shows hcp>=25-partner.hcp.min, H=4 | S=4
            when  stayman, !puppet, style is bba
     3H     Transfer to spades, 5-5 in the majors  [announce: Transfer]  [artificial]
            shows S>=5, H>=5
            when  jacoby, style is bba
     3N     To play: game values
            shows hcp>=25-partner.hcp.min, H<=4, S<=4
            when  style is bba
     4N     Quantitative: invites 6NT
            shows balanced, hcp>=32-partner.hcp.max, points<=31-partner.hcp.min, H<=4, S<=4
            when  quant_4nt, style is bba
     6N     Slam
            shows balanced, points>=32-partner.hcp.min, H<=4, S<=4
            when  style is bba
     P      No game: 4 HCP or less
            shows hcp<=24-partner.hcp.min
            when  style is bba

   after nt2
     when style is not bba
     4C     Slam try: six or more clubs, or five and unbalanced
            shows C>=6 | (C>=5, !balanced), strength>=slam_invite, H<=4, S<=4
            when  !gerber, !tu
     4D     Slam try: six or more diamonds, or five and unbalanced
            shows D>=6 | (D>=5, !balanced), strength>=slam_invite, H<=4, S<=4
            when  !texas

   after nt2 4x (P)
     when (x is C, !gerber, !tu) | (x is D, !texas), style is not bba
     6{x}   A fit: slam
            shows x>=3
     4N     No fit
            shows x<=2

   after nt2 4x (P) 4N (P)
     when (x is C, !gerber, !tu) | (x is D, !texas), style is not bba
     6N     No fit, but slam values
            shows strength>=slam
     P      No fit: 4NT

   after nt2 3C (P)
     when !puppet
     3H     4+ hearts
            shows H>=4
     3S     4 spades, not 4 hearts
            shows S>=4, H<=3
     3D     No four-card major
            shows H<=3, S<=3

   after nt2 3D (P)
     3H     Completes transfer

   after nt2 3H (P)
     3S     Completes transfer

   after nt2 3D (P) 3H (P)
     P      Weak: play here
            shows hcp<=24-partner.hcp.max
     3N     Choice of games: five hearts, game values
            shows H=5, hcp>=25-partner.hcp.max
     4H     Game, six or more hearts
            shows H>=6, hcp>=25-partner.hcp.max

   after nt2 3H (P) 3S (P)
     P      Weak: play here
            shows hcp<=24-partner.hcp.max
     3N     Choice of games: five spades, game values
            shows S=5, hcp>=25-partner.hcp.max
     4S     Game, six or more spades
            shows S>=6, hcp>=25-partner.hcp.max

   after nt2
     when puppet
     3C     Puppet Stayman: asks for a four- or five-card major  [alert]  [artificial]
            shows strength>=game, H<=4, S<=4, H>=3 | S>=3
            when  style is not bba
     3C     Puppet Stayman: asks for a four- or five-card major  [alert]  [artificial]
            shows hcp>=25-partner.hcp.min, H<=4, S<=4, H>=3 | S>=3
            when  style is bba

   after (any auction)
     when asked puppet
     3H     Five hearts
            shows H>=5
     3S     Five spades
            shows S>=5, H<=4
     3D     A four-card major, no five  [artificial]
            shows H=4 | S=4, H<=4, S<=4
     3N     No four- or five-card major
            shows H<=3, S<=3

   after (any auction)
     when answered puppet, partner.last=3D
     3H     Four spades, not four hearts  [alert]  [artificial]
            shows S=4, H<=3
     3S     Four hearts, not four spades  [alert]  [artificial]
            shows H=4, S<=3
     4D     Both majors, no slam interest: opener chooses  [alert]  [artificial]
            shows H=4, S=4, strength<=game
     4C     Both majors, slam interest: opener chooses  [alert]  [artificial]
            shows H=4, S=4, strength>=slam_invite
     7N     No four-card major: grand slam
            shows H<=3, S<=3, points>=37-partner.hcp.min
     6N     No four-card major: slam
            shows H<=3, S<=3, points>=32-partner.hcp.min
     4N     No four-card major: quantitative, invites 6NT
            shows H<=3, S<=3, balanced, strength=slam_invite, points<=31-partner.hcp.min
            when  quant_4nt
     3N     No four-card major: game
            shows H<=3, S<=3, strength>=game

   after (any auction)
     when asked puppet_fit(x)
     4{x}   Four {x}: game in the fit
            shows x=4
     3N     No four {x}
            shows x<=3

   after (any auction)
     when asked puppet_both
     4S     Four spades
            shows S=4
     4H     Four hearts, not four spades
            shows H=4, S<=3

   after nt2 3C (P) 3D (P) 3N (P)
     when puppet
     P      No fit: 3NT

   after (any auction)
     when answered puppet_fit(x), partner.last=4{x}
     6{x}   Slam in the fit
            shows tp(x)>=33-partner.hcp.min
     P      Game in the fit

   after (any auction)
     when answered puppet_both, we.trump is suit
     6{trump} Slam in the fit
            shows tp(trump)>=33-partner.hcp.min
     P      Game in the fit

   after (any auction)
     when answered puppet, partner.last=3H
     6H     Slam in the five-three fit
            shows H>=3, tp(H)>=33-partner.hcp.min
     4H     Game in the five-three fit
            shows H>=3
     6N     No fit: slam
            shows H<=2, points>=32-partner.hcp.min
     4N     No fit: quantitative, invites 6NT
            shows H<=2, balanced, strength=slam_invite, points<=31-partner.hcp.min
            when  quant_4nt
     3N     No fit: game
            shows H<=2

   after (any auction)
     when answered puppet, partner.last=3S
     6S     Slam in the five-three fit
            shows S>=3, tp(S)>=33-partner.hcp.min
     4S     Game in the five-three fit
            shows S>=3
     6N     No fit: slam
            shows S<=2, points>=32-partner.hcp.min
     4N     No fit: quantitative, invites 6NT
            shows S<=2, balanced, strength=slam_invite, points<=31-partner.hcp.min
            when  quant_4nt
     3N     No fit: game
            shows S<=2

   after (any auction)
     when answered puppet, partner.last=3N
     4C     Gerber: how many aces?  [alert]  [artificial]
            shows points>=32-partner.hcp.min
            when  gerber
     6N     No fit: slam
            shows points>=32-partner.hcp.min
     4N     No fit: quantitative, invites 6NT
            shows balanced, strength=slam_invite, points<=31-partner.hcp.min
            when  quant_4nt
     P      No fit: 3NT

   after (any auction)
     when answered puppet_fit(x), partner.last=3N
     4C     Gerber: how many aces?  [alert]  [artificial]
            shows points>=32-partner.hcp.min
            when  gerber
     6N     No fit: slam
            shows points>=32-partner.hcp.min
     4N     No fit: quantitative, invites 6NT
            shows balanced, strength=slam_invite, points<=31-partner.hcp.min
            when  quant_4nt
     P      No fit: 3NT

== benjamin: Benjamin 2♣ and 2♦
   file: conventions/openings/benjamin.bid
   card: two_level.benjamin.play
   needs: strong-openings
   skills: bidding_conventions/benjamin_2d

   after (any auction)
     when opening
     2C     Benjamin 2♣: 22-23, or a strong two  [alert]  [artificial]
            shows hcp=22..23 | (!balanced, hcp=20..23, losers<=4, (S>=6, quality(S)>=good) | (H>=6, quality(H)>=good) | (D>=6, quality(D)>=good) | (C>=6, quality(C)>=good) | shape 5-5-x-x | shape 6-5-x-x)
     2D     Benjamin 2♦: game forcing, 24+  [alert]  [artificial]
            shows hcp>=24 | (hcp=23, longest<=4)
     2D     Benjamin 2♦: game in hand, 22+ and at most one loser  [alert]  [artificial]
            shows hcp>=22, losers<=1

   after 2C (P) 2D (P) 2M (P)
     3M     Three or more {M}: a raise with some values
            shows M>=3, hcp>=4

   after (any auction)
     when asked benjamin
     2S     Five or more spades, any strength
            shows S>=5, S>=H
     2H     Five or more hearts, any strength
            shows H>=5, H>S
     3C     Six or more clubs, no five-card major
            shows C>=6, C>=D, H<=4, S<=4
     3D     Six or more diamonds, no five-card major
            shows D>=6, D>C, H<=4, S<=4
     3N     Positive: 7+ HCP, no five-card major or six-card minor
            shows hcp>=7, H<=4, S<=4, D<=5, C<=5
     2N     Negative: 0-6, no five-card major or six-card minor  [artificial]

   after 2D (P) 2y (P) | 2D (P) 3y (P)
     when y is not N
     cheapest(y) Raise: three or more {y}
            shows y>=3
     cheapest(S) Five or more spades
            shows S>=5
            when  y is not S
     cheapest(H) Five or more hearts
            shows H>=5
            when  y is not H
     cheapest(D) Five or more diamonds
            shows D>=5
            when  y is not D
     cheapest(C) Five or more clubs
            shows C>=5
            when  y is not C
     cheapest(N) No fit, no suit to show

   after 2D (P) 2M (P) 3M (P)
     4M     Weak: 0-5, game
            shows hcp<=5

   after 2D (P) 2M (P) 3M (P) 4M (P) | 2D (P) 2N (P) 3M (P) 4M (P)
     P      No slam interest
            shows losers>=3

   after 2D (P) 2y (P) 2z (P) | 2D (P) 2y (P) 3z (P) | 2D (P) 3y (P) 3z (P)
     when y is not N, z is not N, z is not y
     cheapest(z) Three or more {z}: agrees it
            shows z>=3
     cheapest(y) Six or more {y}
            shows y>=6
            when  y is H | y is S
     cheapest(y) Seven or more {y}
            shows y>=7
            when  y is C | y is D
     cheapest(N) No fit

   after 2D (P) 3N (P)
     7N     Grand slam
            shows hcp+partner.hcp.min>=37
     5N     Slam: 6NT, or 7NT with a maximum
            shows hcp>=23

   after 2D (P) 3N (P) 5N (P)
     7N     A maximum: 12+ HCP
            shows hcp>=12
     6N     6NT

   after 2D (P) 2N (P)
     3C     Five or more clubs
            shows C>=5
     3D     Five or more diamonds
            shows D>=5
     3H     Five or more hearts
            shows H>=5
     3S     Five or more spades
            shows S>=5
     3N     Balanced
            shows balanced
     4N     Balanced 28+: invites 6NT
            shows balanced, hcp>=28

   after 2D (P) 2N (P) 3z (P)
     when z is not N
     4z     Three or more {z}
            shows z>=3
            when  z is H | z is S
     3N     No fit

== flannery: Flannery 2♦
   file: conventions/openings/flannery.bid
   card: two_level.flannery.play
   needs: preempts
   skills: bidding_conventions/flannery

   after (any auction)
     when opening
     2D     Flannery: 11-15 HCP, four spades and five hearts  [alert]  [artificial]
            shows S=4, H=5, hcp=11..15

   after 2D (P) | 2D (X)
     P      Six or more diamonds, weak: to play
            shows D>=6, hcp<=9, H<=2, S<=3
     2S     To play: no game interest
            shows hcp<=9, S>=4 | (S=3, H<=1)
     2H     To play: no game interest
            shows hcp<=10
     3C     Six or more clubs: to play
            shows C>=6, hcp<=9, H<=2, S<=3
     3D     Six or more diamonds, invitational
            shows D>=6, hcp=10..12, H<=2, S<=3
     3H     Invitational: three or more hearts, 10-12
            shows H>=3, tp(H)=10..12, S<=3
     3S     Invitational: four or more spades, 10-12
            shows S>=4, tp(S)=10..12
     4C     Transfer to 4♥: game, no slam interest  [alert]  [artificial]
            shows H>=3, tp(H)>=13, tp(H)<=18, S<=3
     4D     Transfer to 4♠: game, no slam interest  [alert]  [artificial]
            shows S>=4, tp(S)>=13, tp(S)<=18
     3N     To play: the minors held, no major fit
            shows hcp=13..17, H<=2, S<=3, stop(C), stop(D)
     2N     Asks opener's shape: game interest  [alert]  [artificial]
            shows hcp>=11

   after 2D (P) 2H (P) | 2D (P) 2S (P) | 2D (P) 3C (P) | 2D (P) 3N (P)
     P      No further bid

   after 2D (P) 3H (P)
     4H     Accepts the invitation: 14-15
            shows hcp>=14
     P      Declines: a minimum

   after 2D (P) 3S (P)
     4S     Accepts the invitation: 14-15
            shows hcp>=14
     P      Declines: a minimum

   after 2D (P) 3D (P)
     3N     Accepts: a maximum with the clubs stopped
            shows hcp>=14, stop(C)
     P      Declines

   after 2D (P) 4C (P)
     4H     Completes the transfer

   after 2D (P) 4D (P)
     4S     Completes the transfer

   after (any auction)
     when asked flannery
     3C     Three clubs: 4-5-1-3  [artificial]
            shows D=1, C=3
     3D     Three diamonds: 4-5-3-1  [artificial]
            shows D=3, C=1
     3H     4-5-2-2, minimum, 11-13
            shows D=2, C=2, hcp<=13
     3S     4-5-2-2, maximum, 14-15  [artificial]
            shows D=2, C=2, hcp>=14
     3N     4-5-2-2, maximum, the minors held
            shows D=2, C=2, hcp>=14, stop(C), stop(D)
     4C     Four clubs: 4-5-0-4  [artificial]
            shows D=0, C=4
     4D     Four diamonds: 4-5-4-0  [artificial]
            shows D=4, C=0

   after (any auction)
     when answered flannery
     P      3NT is the contract
            when  partner.last=3N
     4S     Game in the spade fit
            shows S>=4
     4H     Game in the heart fit
            shows H>=2
            when  !partner.last=3N
     3N     To play: the short suit held
            shows stop(C) | partner.C.min>=2, stop(D) | partner.D.min>=2
            when  partner.last<=3S

== french-2d: French 2♦ (game forcing)
   file: conventions/openings/french-2d.bid
   card: two_level.french_2d.play
   needs: strong-openings
   skills: bidding_conventions/french_2d

   after (any auction)
     when opening
     2D     French 2♦: game forcing, 24+ HCP  [alert]  [artificial]
            shows hcp>=24

   after (any auction)
     when asked french_2d
     3N     Two aces or more  [artificial]
            shows keycards(N)>=2
     2S     One ace: the ♥A or the ♠A  [artificial]
            shows keycards(N)=1, has(A,H) | has(A,S)
     3C     One ace: the ♣A  [artificial]
            shows keycards(N)=1, has(A,C)
     3D     One ace: the ♦A  [artificial]
            shows keycards(N)=1, has(A,D)
     3H     No ace, 0-7: five or more hearts
            shows keycards(N)=0, hcp<=7, H>=5, H>=S
     3S     No ace, 0-7: five or more spades
            shows keycards(N)=0, hcp<=7, S>=5, S>H
     2N     No ace, 8+  [artificial]
            shows keycards(N)=0, hcp>=8
     2H     No ace, 0-7  [artificial]
            shows keycards(N)=0, hcp<=7

   after 2D (P) 3H (P)
     4H     Three or more hearts: agrees hearts
            shows H>=3

   after 2D (P) 3S (P)
     4S     Three or more spades: agrees spades
            shows S>=3

   after 2D (P) 3N (P)
     6N     Balanced: slam opposite two aces
            shows balanced, hcp>=25
     P      Balanced 24: game
            shows balanced

   after 2D (P) 2H (P) | 2D (P) 2S (P) | 2D (P) 2N (P) | 2D (P) 3C (P) | 2D (P) 3D (P) | 2D (P) 3H (P) | 2D (P) 3S (P) | 2D (P) 3N (P)
     cheapest(S) Five or more spades
            shows S>=5
     cheapest(H) Five or more hearts
            shows H>=5
     cheapest(D) Five or more diamonds
            shows D>=5
     cheapest(C) Five or more clubs
            shows C>=5
     cheapest(N) Balanced
            shows balanced

== kokish: Kokish relay after 2♣–2♦
   file: conventions/openings/kokish.bid
   card: two_level.two_clubs.kokish
   needs: strong-openings
   skills: bidding_conventions/kokish

   after 2C (P) 2D (P)
     2H     Kokish: hearts, or 24-25 balanced  [alert]  [artificial]
            shows (H>=5, !balanced) | (balanced, hcp=24..25)

   after (any auction)
     when asked kokish
     2S     Completes the relay  [alert]  [artificial]

   after (any auction)
     when answered kokish
     2N     24-25 balanced
            shows balanced, hcp=24..25
     3H     Six or more hearts, one-suited
            shows H>=6, S<=3, D<=3, C<=3
     3C     Five or more hearts, four or more clubs
            shows H>=5, C>=4
     3D     Five or more hearts, four or more diamonds
            shows H>=5, D>=4
     3S     Five or more hearts, four or more spades
            shows H>=5, S>=4

   after 2C (P) 2D (P) 2H (P) 2S (P) 3x (P)
     when x is not H
     3H     Three or more hearts: agrees hearts
            shows H>=3
     4x     Four or more {x}: agrees {x}
            shows x>=4, H<=2
            when  x is S
     4x     Four or more {x}: agrees {x}
            shows x>=4, H<=2
            when  x is C | x is D
     3N     No fit: notrump
            shows H<=2

   after 2C (P) 2D (P) 2H (P) 2S (P) 3H (P)
     4H     Two or more hearts: game in hearts
            shows H>=2
     3N     A singleton or void in hearts
            shows H<=1

== mccabe: McCabe adjunct
   file: conventions/openings/mccabe.bid
   card: two_level.mccabe.play
   needs: weak-two-responses
   skills: bidding_conventions/mccabe

   after 2x (X)
     when weak_two_suit(x), x is D | x is H | x is S
     3y     McCabe: a raise, lead {y}  [alert]  [artificial]
            shows x>=3, quality(y)>=good, hcp<=14
            when  y is not x, y is C | (y is D, x is not D) | (y is H, x is S)
     2N     Asks: how good is the weak two?  [alert]  [artificial]
            shows hcp>=15, x>=2
     XX     McCabe: own long suit, asks for the next step  [alert]  [artificial]
            shows x<=1, longest>=6, hcp<=14

   after 2x (X) 3y (P)
     when weak_two_suit(x), x is D | x is H | x is S, y is not x
     3x     Back to my suit

   after 2D (X) XX (P)
     2H     Next step, as asked  [artificial]

   after 2H (X) XX (P)
     2S     Next step, as asked  [artificial]

   after 2S (X) XX (P)
     2N     Next step, as asked  [artificial]

   after 2D (X) XX (P) 2H (P) | 2H (X) XX (P) 2S (P) | 2S (X) XX (P) 2N (P)
     P      My suit: to play
            shows H>=6
            when  partner.last=2H
     P      My suit: to play
            shows S>=6
            when  partner.last=2S
     2S     My suit: to play
            shows S>=6
     3C     My suit: to play
            shows C>=6
     3D     My suit: to play
            shows D>=6
     3H     My suit: to play
            shows H>=6

   after 2D (X) XX (*) | 2H (X) XX (*) | 2S (X) XX (*)
     P      No further bid

== mini-roman: Mini-Roman 2♦
   file: conventions/openings/mini-roman.bid
   card: two_level.two_diamonds.mini_roman
   needs: preempts
   skills: bidding_conventions/mini_roman_2d
   define three_suiter = (longest=4, shortest=1) | (longest=5, second_longest=4, shortest=0, S<=4, H<=4)

   after (any auction)
     when opening
     2D     Mini-Roman: 11-15, 4-4-4-1 or 5-4-4-0  [alert]  [artificial]
            shows hcp=11..15, three_suiter

   after 2D (P) | 2D (X)
     2N     Asks for the short suit: 11+, game forcing  [alert]  [artificial]
            shows hcp>=11
     4H     To play
            shows H>=6, hcp=8..14
     4S     To play
            shows S>=6, hcp=8..14
     3H     Invitational: five or more hearts
            shows H>=5, hcp=9..10
     3S     Invitational: five or more spades
            shows S>=5, hcp=9..10
     P      Five or more diamonds: to play
            shows D>=5, hcp<=10
     2H     To play: four or more hearts
            shows H>=4, hcp<=10
     2S     To play: four or more spades
            shows S>=4, hcp<=10, H<=3
     3C     To play: five or more clubs
            shows C>=5, hcp<=10, H<=3, S<=3
     2H     Weak: pass or correct
            shows hcp<=10

   after 2D (P) 2H (P) | 2D (X) 2H (P)
     P      Four or more hearts
            shows H>=4
     2S     Short in hearts: four spades
            shows H<=1, S>=4
     3C     Short in hearts, no four spades: clubs
            shows H<=1, C>=4

   after 2D (P) 2S (P) | 2D (X) 2S (P)
     P      Four or more spades
            shows S>=4
     3C     Short in spades: clubs
            shows S<=1, C>=4

   after 2D (P) 3C (P) | 2D (X) 3C (P)
     P      Four or more clubs
            shows C>=4
     3D     Short in clubs: diamonds
            shows C<=1, D>=4

   after 2D (P) 2H (P) 2S (P) | 2D (P) 2H (P) 3C (P) | 2D (P) 2S (P) 3C (P) | 2D (P) 3C (P) 3D (P)
     P      Partner's suit: to play

   after 2D (P) 3H (P)
     4H     Accepts: 14-15 with four hearts
            shows H>=4, hcp>=14
     P      Declines

   after 2D (P) 3S (P)
     4S     Accepts: 14-15 with four spades
            shows S>=4, hcp>=14
     P      Declines

   after (any auction)
     when asked mini_roman
     3C     Short clubs
            shows C<=1
     3D     Short diamonds
            shows D<=1
     3H     Short hearts
            shows H<=1
     3S     Short spades
            shows S<=1

   after 2D (P) 2N (P) 3x (P)
     4S     Game in spades
            shows S>=4
            when  x is not S
     4H     Game in hearts
            shows H>=4
            when  x is not H
     3N     Game in notrump: the short suit held
            shows x>=4 | stop(x)
     5C     Game in clubs
            shows C>=4
            when  x is not C
     5D     Game in diamonds
            shows D>=4
            when  x is not D
     3N     Game in notrump

   after 2D (2y) | 2D (3y)
     when y is not D
     4S     Game: 11+ and spades
            shows S>=5 | (S>=4, y is H), hcp>=11
            when  y is not S
     4H     Game: 11+ and hearts
            shows H>=5 | (H>=4, y is S), hcp>=11
            when  y is not H
     3N     Game: 11+, {y} stopped
            shows hcp>=11, stop(y)
     X      11+: values, defence or a game for opener to choose
            shows hcp>=11
     P      Not enough to act

   after 2D (2y) X (P) | 2D (3y) X (P)
     P      Defend: three or more {y}
            shows y>=3
     cheapest(S) Short in {y}: four spades
            shows S>=4, y<=1
            when  y is not S
     cheapest(H) Short in {y}: four hearts
            shows H>=4, y<=1
            when  y is not H
     cheapest(C) Short in {y}: four clubs
            shows C>=4, y<=1
            when  y is not C
     cheapest(D) Short in {y}: four diamonds
            shows D>=4, y<=1
            when  y is not D

   after 2D (2y) X (P) 2z (P) | 2D (2y) X (P) 3z (P) | 2D (3y) X (P) 3z (P) | 2D (3y) X (P) 4z (P)
     4{z}   Game in {z}
            shows z>=4
            when  z is H | z is S
     3N     Game in notrump: {y} stopped
            shows stop(y)
     5{z}   Game in {z}
            shows z>=3
            when  z is C | z is D
     P      Partner's suit: to play

   after 2D (P) 2H (*) | 2D (P) 2S (*) | 2D (P) 3C (*)
     P      No further bid

== multi: Multi 2♦
   file: conventions/openings/multi.bid
   card: two_level.two_diamonds.multi
   needs: preempts
   skills: bidding_conventions/multi_2d

   after (any auction)
     when opening, seat<=3
     2D     Multi: a weak two in hearts or spades  [alert]  [artificial]
            shows hcp=5..10, (H=6, S<=3, hcp<=9 | !has(A,H) | (!has(K,H), !has(A,S), !has(A,D), !has(A,C))) | (S=6, H<=3, hcp<=9 | !has(A,S) | (!has(K,S), !has(A,H), !has(A,D), !has(A,C)))
            when  !vul | (H=6, quality(H)>=good | top5(H)>=3) | (S=6, quality(S)>=good | top5(S)>=3)

   after 2D (P) | 2D (X)
     2H     Pass or correct: no game interest  [alert]
            shows hcp<=14
     2S     Pass or correct: three or more hearts, short spades  [alert]
            shows H>=3, S<=2, hcp=6..14
     3H     Pass or correct, preemptive: three or more in both majors  [alert]
            shows H>=3, S>=3, H+S>=8, hcp<=10
     4H     Pass or correct to game: 4+ in both majors  [alert]
            shows H>=4, S>=4, hcp<=12
     4D     Game: bid your major  [alert]  [artificial]
            shows hcp>=15, H>=3, S>=3
     3C     Six or more clubs: to play
            shows C>=6, H<=2, S<=2, hcp<=14
     2N     Asks: which major, minimum or maximum?  [alert]  [artificial]
            shows hcp>=15

   after 2D (P) 2H (P) | 2D (X) 2H (P)
     P      My suit is hearts
            shows H=6
     2S     My suit is spades
            shows S=6

   after 2D (P) 2S (P) | 2D (X) 2S (P)
     P      My suit is spades
            shows S=6
     3H     My suit is hearts
            shows H=6

   after 2D (P) 3H (P) | 2D (X) 3H (P)
     P      My suit is hearts
            shows H=6
     3S     My suit is spades
            shows S=6

   after 2D (P) 4H (P) | 2D (X) 4H (P)
     P      My suit is hearts
            shows H=6
     4S     My suit is spades
            shows S=6

   after 2D (P) 4D (P) | 2D (X) 4D (P)
     4H     My suit is hearts
            shows H=6
     4S     My suit is spades
            shows S=6

   after 2D (P) 3C (P) | 2D (X) 3C (P)
     P      Partner's suit: to play

   after 2D (P) 2H (*) | 2D (P) 2S (*)
     P      No further bid

   after 2D (P) 2H (P) 2S (P) | 2D (P) 2S (P) 3H (P) | 2D (P) 3H (P) 3S (P) | 2D (P) 4H (P) 4S (P) | 2D (X) 2H (P) 2S (P) | 2D (X) 2S (P) 3H (P) | 2D (X) 3H (P) 3S (P) | 2D (X) 4H (P) 4S (P)
     P      Partner's major: to play

   after 2D (P) 2N (P) 3C (P) 3H (P) | 2D (P) 2N (P) 3D (P) 3S (P)
     P      No further bid

   after (any auction)
     when asked multi
     3C     Maximum with hearts: 8-10  [artificial]
            shows H=6, hcp>=8
     3D     Maximum with spades: 8-10  [artificial]
            shows S=6, hcp>=8
     3H     Minimum with hearts
            shows H=6, hcp<=7
     3S     Minimum with spades
            shows S=6, hcp<=7

   after 2D (P) 2N (P) 3C (P)
     4H     Game opposite a maximum
            shows H>=2 | hcp>=18
     3H     No game: sign off

   after 2D (P) 2N (P) 3D (P)
     4S     Game opposite a maximum
            shows S>=2 | hcp>=18
     3S     No game: sign off

   after 2D (P) 2N (P) 3H (P)
     4H     Game opposite a minimum
            shows H>=2, hcp>=18 | (H>=3, hcp>=16)
     P      No game: play 3♥

   after 2D (P) 2N (P) 3S (P)
     4S     Game opposite a minimum
            shows S>=2, hcp>=18 | (S>=3, hcp>=16)
     P      No game: play 3♠

== namyats: Namyats: 4♣/4♦ strong major preempts
   file: conventions/openings/namyats.bid
   card: preempts.namyats.play
   needs: preempts
   skills: bidding_conventions/namyats

   after (any auction)
     when opening, seat<=3
     4C     Namyats: a strong preempt in hearts, 8-9 tricks  [alert]  [artificial]
            shows H=7, has(A,H), has(K,H), has(Q,H), hcp=9..13, S<=3, !has(A,S), !has(K,S), !has(A,D), !has(K,D), !has(A,C), !has(K,C)
     4D     Namyats: a strong preempt in spades, 8-9 tricks  [alert]  [artificial]
            shows S=7, has(A,S), has(K,S), has(Q,S), hcp=9..13, H<=3, !has(A,H), !has(K,H), !has(A,D), !has(K,D), !has(A,C), !has(K,C)

   after 4C (P) | 4C (X)
     4H     Sign-off: no slam interest
     4D     Relay: slam interest in hearts  [alert]  [artificial]
            shows controls>=5 | hcp>=15, quick_tricks>=3

   after 4D (P) | 4D (X)
     4S     Sign-off: no slam interest
     4H     Relay: slam interest in spades  [alert]  [artificial]
            shows controls>=5 | hcp>=15, quick_tricks>=3

   after 4C (P) 4H (P) | 4D (P) 4S (P)
     P      No further bid

   after (any auction)
     when asked namyats(t)
     4{t}   No side shortness: back to my suit
     4S     A singleton or void in spades
            shows S<=1
            when  t is H
     5C     A singleton or void in clubs
            shows C<=1
     5D     A singleton or void in diamonds
            shows D<=1
     5H     A singleton or void in hearts
            shows H<=1
            when  t is S

== polish-two-suiters: Polish two-suiters: 2♥ and 2♠
   file: conventions/openings/polish-two-suiters.bid
   card: two_level.polish_two_suiters.play
   needs: preempts
   skills: bidding_conventions/polish_two_suiters

   after (any auction)
     when opening, seat<=3
     2H     Polish: five hearts and another five-card suit, 5-11  [alert]
            shows H>=5, S>=5 | D>=5 | C>=5, hcp=5..11
     2S     Polish: five spades and a five-card minor, 5-11  [alert]
            shows S>=5, H<=4, D>=5 | C>=5, hcp=5..11

   after 2H (P) | 2H (X)
     P      Hearts: to play
            shows H>=3, hcp<=14
     2S     Pass or correct: no heart fit  [alert]  [artificial]
            shows H<=2, hcp<=14
     3H     Preemptive raise: four or more hearts
            shows H>=4, hcp<=9
     4H     Game in hearts
            shows H>=3, hcp>=15
     2N     Asks for the second suit: game interest  [alert]  [artificial]
            shows hcp>=15

   after 2S (P) | 2S (X)
     P      Spades: to play
            shows S>=2, hcp<=14
     3C     Pass or correct: no spade fit  [alert]  [artificial]
            shows S<=1, hcp<=14
     3S     Preemptive raise: four or more spades
            shows S>=4, hcp<=9
     4S     Game in spades
            shows S>=3, hcp>=15
     2N     Asks for the minor: game interest  [alert]  [artificial]
            shows hcp>=15

   after 2H (P) 2S (P) | 2H (X) 2S (P)
     P      My second suit is spades
            shows S>=5
     3C     My second suit is clubs
            shows C>=5
     3D     My second suit is diamonds
            shows D>=5

   after 2S (P) 3C (P) | 2S (X) 3C (P)
     P      My minor is clubs
            shows C>=5
     3D     My minor is diamonds
            shows D>=5

   after 2H (P) 3H (P) | 2S (P) 3S (P) | 2H (P) 4H (P) | 2S (P) 4S (P)
     P      No further bid

   after 2H (P) 2S (P) 3x (P) | 2S (P) 3C (P) 3D (P)
     P      Partner's suit: to play

   after (any auction)
     when asked polish(t)
     3C     My second suit is clubs
            shows C>=5
     3D     My second suit is diamonds
            shows D>=5
     3H     My second suit is spades  [artificial]
            shows S>=5
            when  t is H

   after (any auction)
     when answered polish(t)
     4{t}   Game in the major
            shows t>=3
     4S     Game in spades: opener's second suit
            shows S>=3
            when  t is H, partner.last=3H
     3N     Game in notrump
            shows hcp>=16
     5C     Game in clubs
            shows C>=3
            when  partner.last=3C
     5D     Game in diamonds
            shows D>=3
            when  partner.last=3D

== precision-2d: Precision 2♦
   file: conventions/openings/precision-2d.bid
   card: two_level.precision_2d.play
   needs: preempts
   skills: bidding_conventions/precision_2d
   define prec_2d_shape = (S=4, H=4, D=1, C=4) | (S=4, H=4, D=0, C=5) | (S=4, H=3, D=1, C=5, quality(C)<=fair) | (S=3, H=4, D=1, C=5, quality(C)<=fair)

   after (any auction)
     when opening
     2D     Precision 2♦: 11-15, short diamonds  [alert]  [artificial]
            shows hcp=11..15, prec_2d_shape

   after 2D (P) | 2D (X)
     2N     Asks for shape and strength: 11+, game forcing  [alert]  [artificial]
            shows hcp>=11
     P      Six or more diamonds: to play
            shows D>=6, hcp<=10
     3D     Six or more diamonds: invites 3NT
            shows D>=6, hcp=9..10, quality(D)>=good
     3H     Preemptive: six or more hearts
            shows H>=6, hcp<=8
     3S     Preemptive: six or more spades
            shows S>=6, hcp<=8
     2S     Sign-off
            shows S>=3, S>H, hcp<=10
     2H     Sign-off
            shows H>=3, hcp<=10
     3C     Sign-off
            shows C>=4, hcp<=10, S<=2, H<=2
     2H     Sign-off
            shows hcp<=10

   after 2D (P) 2H (P) | 2D (P) 2S (P) | 2D (P) 3C (P) | 2D (P) 3H (P) | 2D (P) 3S (P) | 2D (X) 2H (P) | 2D (X) 2S (P) | 2D (X) 3C (P)
     P      No further bid

   after 2D (P) 3D (P)
     3N     Accepts: 14-15
            shows hcp>=14
     P      Declines

   after (any auction)
     when asked precision_2d
     3C     3-4-1-5
            shows S=3, H=4, C=5
     3D     4-3-1-5
            shows S=4, H=3, C=5
     3H     4-4-1-4, 11-13
            shows S=4, H=4, D=1, hcp<=13
     3S     4-4-1-4, 14-15
            shows S=4, H=4, D=1, hcp>=14
     3N     4-4-1-4, 14-15, the ♦A or ♦K
            shows S=4, H=4, D=1, hcp>=14, has(A,D) | has(K,D)
     4C     4-4-0-5, 11-13
            shows S=4, H=4, D=0, hcp<=13
     4D     4-4-0-5, 14-15
            shows S=4, H=4, D=0, hcp>=14

   after 2D (P) 2N (P) 3x (P) | 2D (P) 2N (P) 4x (P) | 2D (P) 2N (P) 3N (P)
     4S     Game in spades
            shows S>=4 | (S>=5, partner.S>=3)
            when  partner.S>=4 | (partner.S>=3, S>=5)
     4H     Game in hearts
            shows H>=4 | (H>=5, partner.H>=3)
            when  partner.H>=4 | (partner.H>=3, H>=5)
     3N     Game in notrump: diamonds held
            shows stop(D), D>=3
     5C     Game in clubs
            shows C>=3
     P      Partner's 3NT
            when  partner.last=3N
     3N     Game in notrump

   after 2D (P) 2H (*) | 2D (P) 2S (*) | 2D (P) 3C (*)
     P      No further bid

== reverse-flannery: Reverse Flannery
   file: conventions/openings/reverse-flannery.bid
   needs: responses
   skills: bidding_conventions/reverse_flannery

   after 1m (P)
     2H     Reverse Flannery: five spades, four or five hearts, 5-8 HCP  [alert]
            shows S=5, H=4..5, hcp=5..8
            when  rf_2h
     2S     Reverse Flannery: five spades, four hearts, 9-10 HCP  [alert]
            shows S=5, H=4, hcp=9..10
            when  rf_2s

   after 1m (P) 2H (P)
     when rf_2h
     P      To play in hearts: hearts longer than spades
            shows H>S, S<=2, hcp<=15
     2S     To play in spades
            shows hcp<=15
     3m     Six or more of my minor: to play
            shows m>=6, S<=1, H<=2, hcp<=15
     2N     Asks: which shape and which half of the range?  [alert]  [artificial]
            shows hcp>=16
     4S     Game in spades
            shows S>=3, hcp>=18
     4H     Game in hearts
            shows H>=4, H>S, hcp>=18

   after (any auction)
     when asked reverse_flannery
     3C     5-4 in the majors, 5-6 HCP  [artificial]
            shows H=4, hcp<=6
     3D     5-4 in the majors, 7-8 HCP  [artificial]
            shows H=4, hcp>=7
     3H     5-5 in the majors, 5-6 HCP
            shows H=5, hcp<=6
     3S     5-5 in the majors, 7-8 HCP
            shows H=5, hcp>=7

   after (any auction)
     when answered reverse_flannery
     4S     Game in spades
            shows S>=3, S>=H | partner.H.max<=4, hcp+partner.hcp.min>=23
     4H     Game in hearts
            shows H>=4, H>S, hcp+partner.hcp.min>=23
     3N     Game in notrump: no major fit
            shows S<=2, H<=3, hcp+partner.hcp.min>=23
     P      Partner's 3♠: play there
            when  partner.last=3S
     3S     Sign off in spades
            when  !partner.last=3S
     4H     Sign off: hearts are the fit
            shows H>=4, H>S
            when  partner.last=3S

   after 1m (P) 2S (P)
     when rf_2s
     P      A minimum with two spades: play 2♠
            shows S=2, hcp<=14
     3S     Three or more spades, a minimum: invites game
            shows S>=3, tp(S)<=14
     2N     Short spades, a minimum: no fit
            shows S<=1, hcp<=14
     3H     Four hearts, short spades: to play
            shows H>=4, S<=1, hcp<=14
     3m     Six or more of my minor, short spades: to play
            shows m>=6, S<=1, hcp<=14
     4S     Game in spades
            shows S>=3, tp(S)>=15
     4H     Game in hearts
            shows H>=4, S<=2, hcp>=15
     3N     Game in notrump: no fit
            shows S<=2, H<=3, hcp>=15

   after 1m (P) 2S (P) 3S (P)
     when rf_2s
     4S     Accepts: 10 HCP
            shows hcp>=10
     P      Declines: 9 HCP

   after 1m (P) 2S (P) 3x (P)
     when rf_2s, x is not S
     P      No further bid

   after 1m (P) 2S (P) 2N (P)
     when rf_2s
     P      No game: play 2NT
            shows hcp<=9
     3N     10 HCP: game

   after 1m (P) 2H (P) 3m (P) | 1m (P) 2H (P) 2S (P)
     when rf_2h
     P      No further bid

== vs-multi: Defence to a Multi 2♦
   file: conventions/openings/vs-multi.bid
   needs: base
   skills: bidding_conventions/multi_2d

   after (2D)
     when maybe rho.H>=6, maybe rho.S>=6, maybe rho.D<=3
     X      13-15 balanced, or 16+ any shape
            shows (balanced, hcp=13..15) | hcp>=16
     2H     Natural: five or more hearts, not forcing
            shows H>=5, hcp=10..15
     2S     Natural: five or more spades, not forcing
            shows S>=5, hcp=10..15
     2N     16-18 balanced
            shows balanced, hcp=16..18
     3C     Natural: six or more clubs
            shows C>=6, hcp=10..15
     3D     Natural: six or more diamonds
            shows D>=6, hcp=10..15
     3H     Natural: six or more hearts, a good overcall
            shows H>=6, hcp=13..16
     3S     Natural: six or more spades, a good overcall
            shows S>=6, hcp=13..16
     P      No overcall

   after (2D) P (2H)
     when maybe lho.H>=6, maybe lho.S>=6, maybe lho.D<=3
     X      Takeout of hearts: 13+
            shows H<=2, S>=3, hcp>=13
     2S     Natural: five or more spades
            shows S>=5, hcp=10..15
     2N     15-18 balanced
            shows balanced, hcp=15..18
     3C     Natural: six or more clubs
            shows C>=6, hcp=10..15
     3D     Natural: six or more diamonds
            shows D>=6, hcp=10..15
     P      No overcall

   after (2D) P (2S)
     when maybe lho.H>=6, maybe lho.S>=6, maybe lho.D<=3
     X      Takeout of spades: 13+
            shows S<=2, H>=3, hcp>=13
     2N     15-18 balanced
            shows balanced, hcp=15..18
     3C     Natural: six or more clubs
            shows C>=6, hcp=10..15
     3D     Natural: six or more diamonds
            shows D>=6, hcp=10..15
     3H     Natural: five or more hearts
            shows H>=5, hcp=11..15
     P      No overcall

== wilkosz: Wilkosz 2♦
   file: conventions/openings/wilkosz.bid
   card: two_level.wilkosz.play
   needs: preempts
   skills: bidding_conventions/wilkosz
   define wilkosz_shape = (H>=5, S>=5) | (H>=5, C>=5) | (H>=5, D>=5) | (S>=5, C>=5) | (S>=5, D>=5)

   after (any auction)
     when opening, seat<=3
     2D     Wilkosz: 5-5 in two suits, one a major, 5-10  [alert]  [artificial]
            shows hcp=5..10, wilkosz_shape

   after 2D (P) | 2D (X)
     2N     Asks for the suits: 14+  [alert]  [artificial]
            shows hcp>=14
     4D     Game: bid your major  [alert]  [artificial]
            shows H>=3, S>=3, hcp=12..13
     3D     Invitational: three or more in both majors  [alert]  [artificial]
            shows H>=3, S>=3, hcp=10..11
     3C     Six or more clubs: to play
            shows C>=6, hcp<=13
     2S     Pass or correct: spades if you have them  [alert]
            shows S>=3, S>H, hcp<=13
     2H     Pass or correct: hearts if you have them  [alert]  [artificial]
            shows hcp<=13

   after 2D (P) 2H (P) | 2D (X) 2H (P)
     P      Five or more hearts
            shows H>=5
     2S     Spades and a minor
            shows S>=5, H<=4

   after 2D (P) 2S (P) | 2D (X) 2S (P)
     P      Five or more spades
            shows S>=5
     3C     Hearts and clubs
            shows H>=5, C>=5, S<=4
     3D     Hearts and diamonds
            shows H>=5, D>=5, S<=4

   after 2D (P) 3C (P) | 2D (X) 3C (P)
     P      Partner's suit: to play

   after 2D (P) 3D (P) | 2D (X) 3D (P)
     4S     Maximum, spades
            shows S>=5, hcp>=9, S>=H
     4H     Maximum, hearts
            shows H>=5, hcp>=9
     3S     Minimum, spades
            shows S>=5, S>=H
     3H     Minimum, hearts
            shows H>=5

   after 2D (P) 4D (P) | 2D (X) 4D (P)
     4S     Spades
            shows S>=5, S>=H
     4H     Hearts
            shows H>=5

   after 2D (P) 2H (P) 2S (P) | 2D (X) 2H (P) 2S (P)
     P      Two or more spades: to play
            shows S>=2
     3C     Short in spades: pass or correct to your minor
            shows S<=1

   after 2D (P) 2H (P) 2S (P) 3C (P) | 2D (X) 2H (P) 2S (P) 3C (P)
     P      Spades and clubs
            shows C>=5
     3D     Spades and diamonds
            shows D>=5

   after 2D (P) 2S (P) 3C (P) | 2D (P) 2S (P) 3D (P) | 2D (P) 2H (P) 2S (P) 3C (P) 3D (P) | 2D (P) 3D (P) 3H (P) | 2D (P) 3D (P) 3S (P)
     P      Partner's suit: to play

   after 2D (P) 2H (*) | 2D (P) 2S (*)
     P      No further bid

   after (any auction)
     when asked wilkosz
     3H     Both majors
            shows H>=5, S>=5
     3C     Clubs and a major
            shows C>=5
     3D     Diamonds and hearts
            shows D>=5, H>=5
     3S     Spades and diamonds
            shows S>=5, D>=5

   after 2D (P) 2N (P) 3C (P)
     3D     Which major?  [artificial]

   after 2D (P) 2N (P) 3C (P) 3D (P)
     3H     Hearts and clubs
            shows H>=5
     3S     Spades and clubs
            shows S>=5

   after 2D (P) 2N (P) 3H (P) | 2D (P) 2N (P) 3D (P) | 2D (P) 2N (P) 3S (P) | 2D (P) 2N (P) 3C (P) 3D (P) 3H (P) | 2D (P) 2N (P) 3C (P) 3D (P) 3S (P)
     4S     Game in spades
            shows S>=3
            when  partner.S>=5
     4H     Game in hearts
            shows H>=3
            when  partner.H>=5
     3N     Game in notrump
     5D     Game in diamonds
            shows D>=3
            when  partner.D>=5
     5C     Game in clubs
            shows C>=3
            when  partner.C>=5

== blackwood: Blackwood (standard)
   file: conventions/slam/blackwood.bid
   card: slam.blackwood.standard
   needs: base
   skills: bidding_conventions/blackwood, partnership_bidding/blackwood
   define bw_kings = controls-keycards(N)-keycards(N)
   define partner_kings = partner.last=6D+partner.last=6H+partner.last=6H+partner.last=6S+partner.last=6S+partner.last=6S+partner.last=6N+partner.last=6N+partner.last=6N+partner.last=6N

   after (any auction)
     when we.trump is suit, !minor_given_way, !asked, we.forcing=none | we.forcing=round
     4N     Blackwood: how many aces?  [artificial]
            when  slam_values_limited, !two_bare_suits

   after (any auction)
     when we.trump is suit, !minor_given_way, !asked, we.forcing=game, !answered control
     4N     Blackwood: how many aces?  [artificial]
            when  slam_values

   after (any auction)
     when we.trump is none, !asked, !they.bid
     4N     Blackwood, agreeing ♠: how many aces?  [artificial]
            when  shown_fit(S), we.fit(S).min>=8, fit_slam_values(S), !two_bare_beside(S)
     4N     Blackwood, agreeing ♥: how many aces?  [artificial]
            when  shown_fit(H), we.fit(H).min>=8, fit_slam_values(H), !two_bare_beside(H)
     4N     Blackwood, agreeing ♠: how many aces?  [artificial]
            when  kc_open(S), !shown_fit(S), !shown_fit(H), we.fit(S).min>=8, fit_slam_values(S), !two_bare_beside(S)
     4N     Blackwood, agreeing ♥: how many aces?  [artificial]
            when  kc_open(H), !shown_fit(S), !shown_fit(H), we.fit(H).min>=8, fit_slam_values(H), !two_bare_beside(H)
     4N     Blackwood, agreeing ♦: how many aces?  [artificial]
            when  kc_open(D), !shown_fit(S), !shown_fit(H), we.fit(D).min>=8, fit_slam_values(D), !two_bare_beside(D), hcp+partner.hcp.min>=30
     4N     Blackwood, agreeing ♣: how many aces?  [artificial]
            when  kc_open(C), !shown_fit(S), !shown_fit(H), we.fit(C).min>=8, fit_slam_values(C), !two_bare_beside(C), hcp+partner.hcp.min>=30

   after (any auction)
     when minor_given_way, !asked
     4N     Blackwood, agreeing ♠: how many aces?  [artificial]
            when  major_over_minor(S), fit_slam_values(S), !two_bare_beside(S)
     4N     Blackwood, agreeing ♥: how many aces?  [artificial]
            when  major_over_minor(H), !major_over_minor(S), fit_slam_values(H), !two_bare_beside(H)

   after (any auction)
     when we.trump is suit, asked control(t)
     4N     Blackwood: how many aces?  [artificial]
            when  all_covered

   after (any auction)
     when we.trump is suit, answered control(t), partner.last=4{trump}
     4N     Blackwood: how many aces?  [artificial]
            when  all_covered_by_us

   after (any auction)
     when asked aces
     5C     0 or 4 aces  [artificial]
            shows keycards(N) in 0|4
     5D     1 ace  [artificial]
            shows keycards(N)=1
     5H     2 aces  [artificial]
            shows keycards(N)=2
     5S     3 aces  [artificial]
            shows keycards(N)=3

   after (any auction)
     when answered aces
     5N     King ask: all the aces held  [artificial]
            when  kask5n, we.keycards(N)=4
     6{trump} Small slam
            when  we.keycards(N)>=3
     P      To play
            when  partner.last=5{trump}, we.keycards(N).max<=2
     5{trump} Signoff
            when  we.keycards(N).max<=2
     6{trump} Small slam
            when  maybe we.keycards(N)>=3

   after (any auction)
     when kask5n, asked kings(N)
     6C     No king  [artificial]
            shows bw_kings=0
     6D     One king  [artificial]
            shows bw_kings=1
     6H     Two kings  [artificial]
            shows bw_kings=2
     6S     Three kings  [artificial]
            shows bw_kings=3
     6N     Four kings  [artificial]
            shows bw_kings=4

   after (any auction)
     when kask5n, answered kings(N)
     7{trump} Grand slam
            when  bw_kings+partner_kings>=4
     7{trump} Grand slam
            when  bw_kings+partner_kings>=3, hcp+partner.hcp.min>=33
     P      To play
            when  partner.last=6{trump}
     6{trump} Small slam
     6N     Small slam

== control-bids: Control bids before the keycard ask
   file: conventions/slam/control-bids.bid
   card: slam.cue_bids.play
   needs: base
   skills: bidding_conventions/control_bids, partnership_bidding/slam_bidding

   after (any auction)
     when we.trump is suit, !asked, !answered control, trump is H | trump is S, we.forcing=game
     cheapest(C) Control bid in ♣  [alert]  [artificial]
            when  trump is not C, !partner.cued(C), !me.cued(C), under_game(C), slam_values, side_suit_uncontrolled, controlled(C), denials_promised
     cheapest(D) Control bid in ♦  [alert]  [artificial]
            when  trump is not D, !partner.cued(D), !me.cued(D), under_game(D), slam_values, side_suit_uncontrolled, controlled(D), denials_promised
     cheapest(H) Control bid in ♥  [alert]  [artificial]
            when  trump is not H, !partner.cued(H), !me.cued(H), under_game(H), slam_values, side_suit_uncontrolled, controlled(H), denials_promised
     cheapest(S) Control bid in ♠  [alert]  [artificial]
            when  trump is not S, !partner.cued(S), !me.cued(S), under_game(S), slam_values, side_suit_uncontrolled, controlled(S), denials_promised

   after (any auction)
     when we.trump is suit, !asked, !answered control, trump is H | trump is S, we.forcing=none | we.forcing=round
     cheapest(C) Control bid in ♣  [alert]  [artificial]
            when  trump is not C, !partner.cued(C), !me.cued(C), under_game(C), slam_values_limited, side_suit_uncontrolled, controlled(C), denials_promised
     cheapest(D) Control bid in ♦  [alert]  [artificial]
            when  trump is not D, !partner.cued(D), !me.cued(D), under_game(D), slam_values_limited, side_suit_uncontrolled, controlled(D), denials_promised
     cheapest(H) Control bid in ♥  [alert]  [artificial]
            when  trump is not H, !partner.cued(H), !me.cued(H), under_game(H), slam_values_limited, side_suit_uncontrolled, controlled(H), denials_promised
     cheapest(S) Control bid in ♠  [alert]  [artificial]
            when  trump is not S, !partner.cued(S), !me.cued(S), under_game(S), slam_values_limited, side_suit_uncontrolled, controlled(S), denials_promised

   after (any auction)
     when we.trump is suit, asked control(t), trump is H | trump is S
     cheapest(C) Control bid in ♣  [alert]  [artificial]
            when  trump is not C, !partner.cued(C), !me.cued(C), under_game(C), controlled(C), denials_promised
     cheapest(D) Control bid in ♦  [alert]  [artificial]
            when  trump is not D, !partner.cued(D), !me.cued(D), under_game(D), controlled(D), denials_promised
     cheapest(H) Control bid in ♥  [alert]  [artificial]
            when  trump is not H, !partner.cued(H), !me.cued(H), under_game(H), controlled(H), denials_promised
     cheapest(S) Control bid in ♠  [alert]  [artificial]
            when  trump is not S, !partner.cued(S), !me.cued(S), under_game(S), controlled(S), denials_promised
     cheapest(C) Control bid in ♣: first-round control  [alert]  [artificial]
            when  trump is not C, !partner.cued(C), !me.cued(C), !under_game(C), (trump is H, cheapest_rank(C)<27) | (trump is S, cheapest_rank(C)<28), first_round(C), denials_promised_first
     cheapest(D) Control bid in ♦: first-round control  [alert]  [artificial]
            when  trump is not D, !partner.cued(D), !me.cued(D), !under_game(D), (trump is H, cheapest_rank(D)<27) | (trump is S, cheapest_rank(D)<28), first_round(D), denials_promised_first
     cheapest(H) Control bid in ♥: first-round control  [alert]  [artificial]
            when  trump is not H, !partner.cued(H), !me.cued(H), !under_game(H), (trump is H, cheapest_rank(H)<27) | (trump is S, cheapest_rank(H)<28), first_round(H), denials_promised_first
     cheapest(S) Control bid in ♠: first-round control  [alert]  [artificial]
            when  trump is not S, !partner.cued(S), !me.cued(S), !under_game(S), !kb_spade_ask, (trump is H, cheapest_rank(S)<27) | (trump is S, cheapest_rank(S)<28), first_round(S), denials_promised_first
     4{trump} Signoff: no further control
     5{trump} Signoff: no further control

   after (any auction)
     when we.trump is suit, answered control(t), partner.last=4{trump}, trump is H | trump is S, !me.denied(C), !me.denied(D), !me.denied(H), !me.denied(S)
     cheapest(C) Control bid in ♣: first-round control  [alert]  [artificial]
            when  trump is not C, !partner.cued(C), !me.cued(C), (trump is H, cheapest_rank(C)<27) | (trump is S, cheapest_rank(C)<28), slam_values, first_round(C), denials_promised_first
     cheapest(D) Control bid in ♦: first-round control  [alert]  [artificial]
            when  trump is not D, !partner.cued(D), !me.cued(D), (trump is H, cheapest_rank(D)<27) | (trump is S, cheapest_rank(D)<28), slam_values, first_round(D), denials_promised_first
     cheapest(H) Control bid in ♥: first-round control  [alert]  [artificial]
            when  trump is not H, !partner.cued(H), !me.cued(H), (trump is H, cheapest_rank(H)<27) | (trump is S, cheapest_rank(H)<28), slam_values, first_round(H), denials_promised_first
     cheapest(S) Control bid in ♠: first-round control  [alert]  [artificial]
            when  trump is not S, !partner.cued(S), !me.cued(S), !kb_spade_ask, (trump is H, cheapest_rank(S)<27) | (trump is S, cheapest_rank(S)<28), slam_values, first_round(S), denials_promised_first
     P      No further bid

== dopi-ropi: DOPI and ROPI: answering an ace or keycard ask over interference
   file: conventions/slam/dopi-ropi.bid
   needs: base
   skills: bidding_conventions/dopi_ropi
   define kc_first_14(t) = (gstyle is not bba, !m0314 | t is H | t is S) | (gstyle is bba, !k0314)
   define rho_bid = !rho.last=P, !rho.last=X, !rho.last=XX
   define lho_bid = !lho.last=P, !lho.last=X, !lho.last=XX
   define partner_bid = !partner.last=P, !partner.last=X, !partner.last=XX
   define dopi_bid = rho_bid, rho.last<=5S
   define ropi_dbl = rho.last=X
   define kc_two_missing(t) = we.keycards(t).max<=3

   after (any auction)
     when dopi, !depo, asked keycards(t), dopi_bid
     X      DOPI: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  kc_first_14(t)
     P      DOPI: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  kc_first_14(t)
     X      DOPI: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  !kc_first_14(t)
     P      DOPI: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  !kc_first_14(t)

   after (any auction)
     when ropi, asked keycards(t), ropi_dbl
     XX     ROPI: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  kc_first_14(t)
     P      ROPI: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  kc_first_14(t)
     XX     ROPI: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  !kc_first_14(t)
     P      ROPI: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  !kc_first_14(t)
     5C     ROPI: 2 keycards, no {t} queen  [artificial]
            shows keycards(t)=2, !has(Q,t)
     5D     ROPI: 2 keycards and the {t} queen  [artificial]
            shows keycards(t)=2, has(Q,t)

   after (any auction)
     when dopi, !depo, asked keycards(t)
     5D     DOPI: 2 keycards, no {t} queen  [artificial]
            shows keycards(t)=2, !has(Q,t)
            when  rho.last=5C
     5H     DOPI: 2 keycards and the {t} queen  [artificial]
            shows keycards(t)=2, has(Q,t)
            when  rho.last=5C
     5H     DOPI: 2 keycards, no {t} queen  [artificial]
            shows keycards(t)=2, !has(Q,t)
            when  rho.last=5D
     5S     DOPI: 2 keycards and the {t} queen  [artificial]
            shows keycards(t)=2, has(Q,t)
            when  rho.last=5D
     5S     DOPI: 2 keycards, no {t} queen  [artificial]
            shows keycards(t)=2, !has(Q,t)
            when  rho.last=5H
     5N     DOPI: 2 keycards and the {t} queen  [artificial]
            shows keycards(t)=2, has(Q,t)
            when  rho.last=5H
     5N     DOPI: 2 keycards, no {t} queen  [artificial]
            shows keycards(t)=2, !has(Q,t)
            when  rho.last=5S
     6C     DOPI: 2 keycards and the {t} queen  [artificial]
            shows keycards(t)=2, has(Q,t)
            when  rho.last=5S

   after (any auction)
     when depo, asked keycards(t), dopi_bid
     X      DEPO: 0, 2 or 4 keycards  [artificial]
            shows keycards(t) in 0|2|4
     P      DEPO: 1 or 3 keycards  [artificial]
            shows keycards(t) in 1|3|5

   after (any auction)
     when depo, asked aces, dopi_bid
     X      DEPO: 0, 2 or 4 aces  [artificial]
            shows keycards(N) in 0|2|4
     P      DEPO: 1 or 3 aces  [artificial]
            shows keycards(N) in 1|3

   after (any auction)
     when dopi, !depo, asked aces, dopi_bid
     X      DOPI: 0 or 4 aces  [artificial]
            shows keycards(N) in 0|4
     P      DOPI: 1 ace  [artificial]
            shows keycards(N)=1

   after (any auction)
     when ropi, asked aces, ropi_dbl
     XX     ROPI: 0 or 4 aces  [artificial]
            shows keycards(N) in 0|4
     P      ROPI: 1 ace  [artificial]
            shows keycards(N)=1
     5C     ROPI: 2 aces  [artificial]
            shows keycards(N)=2
     5D     ROPI: 3 aces  [artificial]
            shows keycards(N)=3

   after (any auction)
     when dopi, !depo, asked aces
     5D     DOPI: 2 aces  [artificial]
            shows keycards(N)=2
            when  rho.last=5C
     5H     DOPI: 3 aces  [artificial]
            shows keycards(N)=3
            when  rho.last=5C
     5H     DOPI: 2 aces  [artificial]
            shows keycards(N)=2
            when  rho.last=5D
     5S     DOPI: 3 aces  [artificial]
            shows keycards(N)=3
            when  rho.last=5D
     5S     DOPI: 2 aces  [artificial]
            shows keycards(N)=2
            when  rho.last=5H
     5N     DOPI: 3 aces  [artificial]
            shows keycards(N)=3
            when  rho.last=5H
     5N     DOPI: 2 aces  [artificial]
            shows keycards(N)=2
            when  rho.last=5S
     6C     DOPI: 3 aces  [artificial]
            shows keycards(N)=3
            when  rho.last=5S

   after (any auction)
     when dopi | ropi | depo, answered keycards(t), rho.last=P
     P      Defend doubled: two keycards missing
            when  partner.last=X, kc_two_missing(t), lho_bid, lho.last<=5S
     X      Penalty: two keycards missing
            when  partner.last=P, we.keycards(t).min<=3, lho_bid, lho.last<=5S

   after (any auction)
     when dopi | ropi | depo, answered aces, rho.last=P
     P      Defend doubled: two aces missing
            when  partner.last=X, we.keycards(N).max<=2, lho_bid, lho.last<=5S
     X      Penalty: two aces missing
            when  partner.last=P, we.keycards(N).max<=2, lho_bid, lho.last<=5S

== exclusion: Exclusion Blackwood: a jump to five in a void asks for keycards outside it
   file: conventions/slam/exclusion.bid
   card: slam.exclusion_blackwood.play
   needs: base
   skills: bidding_conventions/exclusion_blackwood
   define ex_jump(v) = (v is C, cheapest_rank(C)<=20) | (v is D, cheapest_rank(D)<=21) | (v is H, cheapest_rank(H)<=22) | (v is S, cheapest_rank(S)<=23)
   define ex_level(v) = ex_jump(v) | gstyle is bba
   define ex_zero_room(v) = (gstyle is not bba, (v is C, trump is H | trump is S) | (v is D, trump is S)) | (gstyle is bba, (v is C, trump is not C) | (v is D, trump is H | trump is S) | (v is H, trump is S))
   define ex_room(v) = keycards(trump)>=3 | (keycards(trump)>=2, ex_zero_room(v))
   define ex_values = slam_values | slam_values_limited
   define ex_keys(v) = keycards(trump)-has(A,v)
   define ex_s1(v) = (v is C, partner.last=5D) | (v is D, partner.last=5H) | (v is H, partner.last=5S) | (v is S, partner.last=5N)
   define ex_s2(v) = (v is C, partner.last=5H) | (v is D, partner.last=5S) | (v is H, partner.last=5N) | (v is S, partner.last=6C)
   define ex_s3(v) = (v is C, partner.last=5S) | (v is D, partner.last=5N) | (v is H, partner.last=6C) | (v is S, partner.last=6D)
   define ex_s4(v) = (v is C, partner.last=5N) | (v is D, partner.last=6C) | (v is H, partner.last=6D) | (v is S, partner.last=6H)
   define ex_d1 = partner.last=X | partner.last=XX
   define ex_d2 = partner.last=P
   define ex_partner(v) = gstyle is not bba, ex_s1(v) | ex_d1+gstyle is not bba, ex_s3(v) | ex_s4(v)+gstyle is not bba, ex_s3(v) | ex_s4(v)+gstyle is bba, ex_s2(v) | ex_d2+gstyle is bba, ex_s3(v)+gstyle is bba, ex_s3(v)+gstyle is bba, ex_s4(v)+gstyle is bba, ex_s4(v)+gstyle is bba, ex_s4(v)
   define ex_total(v) = keycards(trump)+ex_partner(v)
   define ex_queen(v) = has(Q,trump) | (gstyle is not bba, ex_s4(v))

   after (any auction)
     when we.trump is suit, !minor_given_way, !asked
     5C     Exclusion: ♣ void, how many keycards outside ♣?  [alert]  [artificial]
            shows C=0, ex_values
            when  trump is not C, ex_level(C), ex_room(C)
     5D     Exclusion: ♦ void, how many keycards outside ♦?  [alert]  [artificial]
            shows D=0, ex_values
            when  trump is not D, ex_level(D), ex_room(D)
     5H     Exclusion: ♥ void, how many keycards outside ♥?  [alert]  [artificial]
            shows H=0, ex_values
            when  trump is not H, ex_level(H), ex_room(H)
     5S     Exclusion: ♠ void, how many keycards outside ♠?  [alert]  [artificial]
            shows S=0, ex_values
            when  trump is not S, ex_level(S), ex_room(S)

   after (any auction)
     when asked exclusion(v), rho.last=P, gstyle is not bba
     5D     1 or 4 keycards outside clubs  [artificial]
            shows ex_keys(v) in 1|4
            when  v is C
     5H     0 or 3 keycards outside clubs  [artificial]
            shows ex_keys(v) in 0|3
            when  v is C
     5S     2 keycards outside clubs, no {trump} queen  [artificial]
            shows ex_keys(v)=2, !has(Q,trump)
            when  v is C
     5N     2 keycards outside clubs and the {trump} queen  [artificial]
            shows ex_keys(v)=2, has(Q,trump)
            when  v is C
     5H     1 or 4 keycards outside diamonds  [artificial]
            shows ex_keys(v) in 1|4
            when  v is D
     5S     0 or 3 keycards outside diamonds  [artificial]
            shows ex_keys(v) in 0|3
            when  v is D
     5N     2 keycards outside diamonds, no {trump} queen  [artificial]
            shows ex_keys(v)=2, !has(Q,trump)
            when  v is D
     6C     2 keycards outside diamonds and the {trump} queen  [artificial]
            shows ex_keys(v)=2, has(Q,trump)
            when  v is D
     5S     1 or 4 keycards outside hearts  [artificial]
            shows ex_keys(v) in 1|4
            when  v is H
     5N     0 or 3 keycards outside hearts  [artificial]
            shows ex_keys(v) in 0|3
            when  v is H
     6C     2 keycards outside hearts, no {trump} queen  [artificial]
            shows ex_keys(v)=2, !has(Q,trump)
            when  v is H
     6D     2 keycards outside hearts and the {trump} queen  [artificial]
            shows ex_keys(v)=2, has(Q,trump)
            when  v is H
     5N     1 or 4 keycards outside spades  [artificial]
            shows ex_keys(v) in 1|4
            when  v is S
     6C     0 or 3 keycards outside spades  [artificial]
            shows ex_keys(v) in 0|3
            when  v is S
     6D     2 keycards outside spades, no {trump} queen  [artificial]
            shows ex_keys(v)=2, !has(Q,trump)
            when  v is S
     6H     2 keycards outside spades and the {trump} queen  [artificial]
            shows ex_keys(v)=2, has(Q,trump)
            when  v is S

   after (any auction)
     when asked exclusion(v), rho.last=P, gstyle is bba
     5D     0 keycards outside clubs  [artificial]
            shows ex_keys(v)=0
            when  v is C
     5H     1 keycard outside clubs  [artificial]
            shows ex_keys(v)=1
            when  v is C
     5S     2 keycards outside clubs  [artificial]
            shows ex_keys(v)=2
            when  v is C
     5N     3 keycards outside clubs  [artificial]
            shows ex_keys(v)>=3
            when  v is C
     5H     0 keycards outside diamonds  [artificial]
            shows ex_keys(v)=0
            when  v is D
     5S     1 keycard outside diamonds  [artificial]
            shows ex_keys(v)=1
            when  v is D
     5N     2 keycards outside diamonds  [artificial]
            shows ex_keys(v)=2
            when  v is D
     6C     3 keycards outside diamonds  [artificial]
            shows ex_keys(v)>=3
            when  v is D
     5S     0 keycards outside hearts  [artificial]
            shows ex_keys(v)=0
            when  v is H
     5N     1 keycard outside hearts  [artificial]
            shows ex_keys(v)=1
            when  v is H
     6C     2 keycards outside hearts  [artificial]
            shows ex_keys(v)=2
            when  v is H
     6D     3 keycards outside hearts  [artificial]
            shows ex_keys(v)>=3
            when  v is H
     5N     0 keycards outside spades  [artificial]
            shows ex_keys(v)=0
            when  v is S
     6C     1 keycard outside spades  [artificial]
            shows ex_keys(v)=1
            when  v is S
     6D     2 keycards outside spades  [artificial]
            shows ex_keys(v)=2
            when  v is S
     6H     3 keycards outside spades  [artificial]
            shows ex_keys(v)>=3
            when  v is S

   after (any auction)
     when asked exclusion(v), dopi, rho_bid, rho.last<=6S
     X      DOPI: first step  [artificial]
            shows ex_keys(v) in 1|4
            when  gstyle is not bba
     P      DOPI: second step  [artificial]
            shows ex_keys(v) in 0|3
            when  gstyle is not bba
     X      DOPI: no keycard  [artificial]
            shows ex_keys(v)=0
            when  gstyle is bba
     P      DOPI: one keycard  [artificial]
            shows ex_keys(v)=1
            when  gstyle is bba

   after (any auction)
     when asked exclusion(v), ropi, rho.last=X
     XX     ROPI: first step  [artificial]
            shows ex_keys(v) in 1|4
            when  gstyle is not bba
     P      ROPI: second step  [artificial]
            shows ex_keys(v) in 0|3
            when  gstyle is not bba
     XX     ROPI: no keycard  [artificial]
            shows ex_keys(v)=0
            when  gstyle is bba
     P      ROPI: one keycard  [artificial]
            shows ex_keys(v)=1
            when  gstyle is bba

   after (any auction)
     when asked exclusion(v), !rho.last=P
     6{trump} Small slam: two keycards outside the void
            shows ex_keys(v)=2

   after (any auction)
     when answered exclusion(v)
     7{trump} Grand slam
            when  ex_total(v)>=4, ex_queen(v)
     6{trump} Small slam
            when  ex_total(v)>=3
     P      Defend doubled: two keycards missing
            when  ex_d1, partner.last=X, ex_total(v)<=2
     X      Penalty: two keycards missing
            when  ex_d2, rho.last=P, lho_bid, lho.last>=5C, lho.last<=6S, ex_total(v)<=2
     P      To play
            when  partner.last=5{trump}, ex_total(v)<=2
     5{trump} Signoff
            when  ex_total(v)<=2
     6{trump} Small slam

== four-nt-opening: 4NT opening: asks for specific aces
   file: conventions/slam/four-nt-opening.bid
   card: slam.four_nt_opening.play
   needs: base
   define fna_ace_only(x) = has(A,x) | x=1 | (has(K,x), x=2) | (has(K,x), has(Q,x), x=3) | (has(K,x), has(Q,x), has(J,x), x>=6)
   define fna_hand = C>=1, D>=1, H>=1, S>=1, fna_ace_only(C), fna_ace_only(D), fna_ace_only(H), fna_ace_only(S), keycards(N)>=1, keycards(N)<=3, losers+keycards(N)=4
   define fna_suit(x) = x>=6, x>=S, x>=H, x>=D, x>=C
   define fna_left = losers-we.keycards(N).min-keycards(N)

   after (any auction)
     when opening
     4N     Asks for specific aces: a long suit, every loser an ace  [alert]  [artificial]
            shows fna_hand, S>=6 | H>=6 | D>=6 | C>=6

   after (any auction)
     when asked specific_aces
     5C     No ace  [artificial]
            shows keycards(N)=0
     5D     The diamond ace  [artificial]
            shows keycards(N)=1, has(A,D)
     5H     The heart ace  [artificial]
            shows keycards(N)=1, has(A,H)
     5S     The spade ace  [artificial]
            shows keycards(N)=1, has(A,S)
     6C     The club ace  [artificial]
            shows keycards(N)=1, has(A,C)
     5N     Two aces  [artificial]
            shows keycards(N) in 2|3

   after (any auction)
     when answered specific_aces
     7S     Grand slam
            when  fna_suit(S), fna_left<=0
     6S     Small slam
            when  fna_suit(S), fna_left<=1
     P      To play
            when  fna_suit(S), partner.last=5S
     5S     Signoff
            when  fna_suit(S)
     6S     Small slam
            when  fna_suit(S)
     7H     Grand slam
            when  fna_suit(H), fna_left<=0
     6H     Small slam
            when  fna_suit(H), fna_left<=1
     P      To play
            when  fna_suit(H), partner.last=5H
     5H     Signoff
            when  fna_suit(H)
     6H     Small slam
            when  fna_suit(H)
     7D     Grand slam
            when  fna_suit(D), fna_left<=0
     6D     Small slam
            when  fna_suit(D), fna_left<=1
     P      To play
            when  fna_suit(D), partner.last=5D
     5D     Signoff
            when  fna_suit(D)
     6D     Small slam
            when  fna_suit(D)
     7C     Grand slam
            when  fna_suit(C), fna_left<=0
     6C     Small slam
            when  fna_suit(C), fna_left<=1
     P      To play
            when  fna_suit(C), partner.last=5C
     5C     Signoff
            when  fna_suit(C)
     6C     Small slam
            when  fna_suit(C)

== gerber: Gerber: 4♣ asks for aces over partner's notrump
   file: conventions/slam/gerber.bid
   card: slam.gerber.play
   needs: notrump-base
   skills: bidding_conventions/gerber

   after 1N (P)
     when !texas_4c, !tu
     4C     Gerber: how many aces?  [alert]  [artificial]
            shows balanced, points>=32-partner.hcp.min, H<=4, S<=4
            when  style is not bba
     4C     Gerber: how many aces?  [alert]  [artificial]
            shows balanced, hcp>=31-partner.hcp.min, H<=4, S<=4
            when  style is bba

   after nt2
     when !tu
     4C     Gerber: how many aces?  [alert]  [artificial]
            shows H<=4, S<=4, (balanced, strength>=slam) | (C>=6 | (C>=5, !balanced), strength>=slam_invite)
            when  style is not bba
     4C     Gerber: how many aces?  [alert]  [artificial]
            shows H<=4, S<=4, (balanced, hcp>=31-partner.hcp.min) | (C>=6, hcp>=29-partner.hcp.min)
            when  style is bba

   after 3N (P)
     when system is brill
     4C     Gerber: how many aces?  [alert]  [artificial]
            shows hcp>=31-partner.hcp.min

   after 1x (P) 1y (P) 1N (P) | 1x (P) 1y (P) 2N (P)
     when !only_openings
     4C     Gerber: how many aces?  [alert]  [artificial]
            shows balanced, points>=32-partner.hcp.min

   after (any auction)
     when asked gerber
     4D     0 or 4 aces  [artificial]
            shows keycards(N) in 0|4
     4H     1 ace  [artificial]
            shows keycards(N)=1
     4S     2 aces  [artificial]
            shows keycards(N)=2
     4N     3 aces  [artificial]
            shows keycards(N)=3

   after (any auction)
     when answered gerber
     7N     Grand slam
            when  we.keycards(N)=4, points+partner.hcp.min>=35
     5C     Gerber: how many kings?  [alert]  [artificial]
            when  we.keycards(N)=4, points+partner.hcp.min>=33, points+partner.hcp.min<=34, C<=5
     6C     Small slam
            when  we.keycards(N)>=3, C>=6, imps
     6N     Small slam
            when  we.keycards(N)>=3
     4N     Signoff
            when  we.keycards(N).max<=2
     6N     Small slam
            when  maybe we.keycards(N)>=3

   after (any auction)
     when asked gerber_kings
     5D     0 or 4 kings  [artificial]
            shows controls-keycards(N)-keycards(N)=0 | controls-keycards(N)-keycards(N)=4
     5H     1 king  [artificial]
            shows controls-keycards(N)-keycards(N)=1
     5S     2 kings  [artificial]
            shows controls-keycards(N)-keycards(N)=2
     5N     3 kings  [artificial]
            shows controls-keycards(N)-keycards(N)=3

   after (any auction)
     when answered gerber_kings
     7N     Grand slam
            when  (partner.last=5N, controls-keycards(N)-keycards(N)>=1) | (partner.last=5S, controls-keycards(N)-keycards(N)>=2) | (partner.last=5H, controls-keycards(N)-keycards(N)>=3) | (partner.last=5D, controls-keycards(N)-keycards(N)>=4)
     6N     Small slam

== kickback: Kickback: the step above four of the trump suit asks for keycards
   file: conventions/slam/kickback.bid
   needs: base
   skills: bidding_conventions/kickback
   define kickback_on = kbplay | kb1430 | kb0314
   define kb_room(t) = (t is C, cheapest_rank(D)<=21) | (t is D, cheapest_rank(H)<=22) | (t is H, cheapest_rank(S)<=23)
   define kb_asks(t) = kickback_on, kb_room(t)
   define kb_spade_ask = kb_asks(H), trump is H
   define kb_first_14 = !kb0314

   after (any auction)
     when kickback_on, we.trump is suit, !minor_given_way, !asked, we.forcing=none | we.forcing=round
     4D     Kickback: keycard ask in ♣  [alert]  [artificial]
            when  trump is C, kb_room(C), slam_values_limited, !two_bare_suits
     4H     Kickback: keycard ask in ♦  [alert]  [artificial]
            when  trump is D, kb_room(D), slam_values_limited, !two_bare_suits
     4S     Kickback: keycard ask in ♥  [alert]  [artificial]
            when  trump is H, kb_room(H), slam_values_limited, !two_bare_suits

   after (any auction)
     when kickback_on, we.trump is suit, !minor_given_way, !asked, we.forcing=game, !answered control
     4D     Kickback: keycard ask in ♣  [alert]  [artificial]
            when  trump is C, kb_room(C), slam_values
     4H     Kickback: keycard ask in ♦  [alert]  [artificial]
            when  trump is D, kb_room(D), slam_values
     4S     Kickback: keycard ask in ♥  [alert]  [artificial]
            when  trump is H, kb_room(H), slam_values

   after (any auction)
     when kickback_on, we.trump is suit, asked control(t), trump is H
     4S     Kickback: keycard ask in ♥  [alert]  [artificial]
            when  kb_room(H), all_covered

   after (any auction)
     when kickback_on, we.trump is suit, answered control(t), partner.last=4H, trump is H
     4S     Kickback: keycard ask in ♥  [alert]  [artificial]
            when  kb_room(H), all_covered_by_us

   after (any auction)
     when kickback_on, asked kickback(t), rho.last=P
     4H     Kickback: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is C, kb_first_14
     4H     Kickback: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is C, !kb_first_14
     4S     Kickback: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is C, kb_first_14
     4S     Kickback: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is C, !kb_first_14
     4N     Kickback: 2 or 5 keycards, no {t} queen  [artificial]
            shows keycards(t) in 2|5, !has(Q,t)
            when  t is C
     5C     Kickback: 2 or 5 keycards and the {t} queen  [artificial]
            shows keycards(t) in 2|5, has(Q,t)
            when  t is C
     4S     Kickback: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is D, kb_first_14
     4S     Kickback: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is D, !kb_first_14
     4N     Kickback: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is D, kb_first_14
     4N     Kickback: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is D, !kb_first_14
     5C     Kickback: 2 or 5 keycards, no {t} queen  [artificial]
            shows keycards(t) in 2|5, !has(Q,t)
            when  t is D
     5D     Kickback: 2 or 5 keycards and the {t} queen  [artificial]
            shows keycards(t) in 2|5, has(Q,t)
            when  t is D
     4N     Kickback: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is H, kb_first_14
     4N     Kickback: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is H, !kb_first_14
     5C     Kickback: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is H, kb_first_14
     5C     Kickback: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is H, !kb_first_14
     5D     Kickback: 2 or 5 keycards, no {t} queen  [artificial]
            shows keycards(t) in 2|5, !has(Q,t)
            when  t is H
     5H     Kickback: 2 or 5 keycards and the {t} queen  [artificial]
            shows keycards(t) in 2|5, has(Q,t)
            when  t is H

   after (any auction)
     when kickback_on, answered kickback(t)
     7{t}   Grand slam
            when  we.keycards(t)=5, has(Q,t) | partner.last=5{t}, grand_try, !kask5n
     5N     King ask: all keycards and the {t} queen held  [artificial]
            when  kask5n, we.keycards(t)=5, has(Q,t) | partner.last=5{t}
     6{t}   Small slam
            when  we.keycards(t)>=4
     7{t}   Grand slam
            when  kc_high(t), we.keycards(t).max=5, has(Q,t) | partner.last=5{t}, grand_try, !kask5n
     5N     King ask: all keycards and the {t} queen held  [artificial]
            when  kask5n, kc_high(t), we.keycards(t).max=5, has(Q,t) | partner.last=5{t}
     6{t}   Small slam
            when  kc_high(t)
     P      To play
            when  partner.last=5{t}, we.keycards(t).max<=3
     5{t}   Signoff
            when  we.keycards(t).max<=3
     5{t}   Signoff
            when  maybe we.keycards(t)>=4

   after (any auction)
     when kickback_on, asked kb_correct(t)
     6{t}   Corrects to six: the higher count
            shows keycards(t) in 3|4|5
     P      Accepts the sign-off

== minorwood: Minorwood: four of the agreed minor asks for keycards
   file: conventions/slam/minorwood.bid
   needs: base
   skills: bidding_conventions/minorwood
   define mw_room(t) = (t is C, cheapest_rank(C)<=20) | (t is D, cheapest_rank(D)<=21)
   define mw_asks(t) = mwplay, !kickback_on, mw_room(t)

   after (any auction)
     when mwplay, !kickback_on, we.trump is suit, !minor_given_way, !asked, we.forcing=game, !answered control
     4C     Minorwood: keycard ask in ♣  [alert]  [artificial]
            when  trump is C, mw_room(C), slam_values
     4D     Minorwood: keycard ask in ♦  [alert]  [artificial]
            when  trump is D, mw_room(D), slam_values

   after (any auction)
     when mwplay, !kickback_on, we.trump is suit, !minor_given_way, !asked, !they.bid, we.forcing=none | we.forcing=round
     4C     Minorwood: keycard ask in ♣  [alert]  [artificial]
            when  trump is C, mw_room(C), slam_values_limited, !two_bare_suits
     4D     Minorwood: keycard ask in ♦  [alert]  [artificial]
            when  trump is D, mw_room(D), slam_values_limited, !two_bare_suits

   after (any auction)
     when mwplay, asked minorwood(t), rho.last=P
     4D     Minorwood: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is C, kc_first_14(t)
     4D     Minorwood: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is C, !kc_first_14(t)
     4H     Minorwood: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is C, kc_first_14(t)
     4H     Minorwood: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is C, !kc_first_14(t)
     4S     Minorwood: 2 or 5 keycards, no {t} queen  [artificial]
            shows keycards(t) in 2|5, !has(Q,t)
            when  t is C
     4N     Minorwood: 2 or 5 keycards and the {t} queen  [artificial]
            shows keycards(t) in 2|5, has(Q,t)
            when  t is C
     4H     Minorwood: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is D, kc_first_14(t)
     4H     Minorwood: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is D, !kc_first_14(t)
     4S     Minorwood: 0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  t is D, kc_first_14(t)
     4S     Minorwood: 1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  t is D, !kc_first_14(t)
     4N     Minorwood: 2 or 5 keycards, no {t} queen  [artificial]
            shows keycards(t) in 2|5, !has(Q,t)
            when  t is D
     5C     Minorwood: 2 or 5 keycards and the {t} queen  [artificial]
            shows keycards(t) in 2|5, has(Q,t)
            when  t is D

   after (any auction)
     when mwplay, answered minorwood(t)
     7{t}   Grand slam
            when  we.keycards(t)=5, has(Q,t) | (t is C, partner.last=4N) | (t is D, partner.last=5C), grand_try, !kask5n
     5N     King ask: all keycards and the {t} queen held  [artificial]
            when  kask5n, we.keycards(t)=5, has(Q,t) | (t is C, partner.last=4N) | (t is D, partner.last=5C)
     6{t}   Small slam
            when  we.keycards(t)>=4
     7{t}   Grand slam
            when  kc_high(t), we.keycards(t).max=5, has(Q,t) | (t is C, partner.last=4N) | (t is D, partner.last=5C), grand_try, !kask5n
     5N     King ask: all keycards and the {t} queen held  [artificial]
            when  kask5n, kc_high(t), we.keycards(t).max=5, has(Q,t) | (t is C, partner.last=4N) | (t is D, partner.last=5C)
     6{t}   Small slam
            when  kc_high(t)
     5{t}   Signoff
            when  we.keycards(t).max<=3
     5{t}   Signoff
            when  maybe we.keycards(t)>=4

   after (any auction)
     when mwplay, asked mw_correct(t)
     6{t}   Corrects to six: the higher count
            shows keycards(t) in 3|4|5
     P      Accepts the sign-off

== over-3nt: Slam after partner's 3NT
   file: conventions/slam/over-3nt.bid
   needs: base
   skills: partnership_bidding/slam_bidding
   define texas_3n = partner.hcp.min>=24, partner.bids>=2

   after (any auction)
     when partner.last=3N, !they.bid, we.trump is none
     6N     Small slam
            shows hcp+partner.hcp.min>=34
     4N     Quantitative: invites 6NT
            shows hcp+partner.hcp.min>=32, hcp+partner.hcp.max<=35
            when  q4n
     4C     Slam try: six or more clubs
            shows C>=6, hcp+partner.hcp.min>=31
            when  !(texas_3n, tu)
     4D     Slam try: six or more diamonds
            shows D>=6, hcp+partner.hcp.min>=31
            when  !(texas_3n, texas | tu)
     4S     To play: a self-sufficient ♠ suit
            shows (S>=6, quality(S)=3, top5(S)>=4) | (S>=7, quality(S)=3), (H<=2, !stop(H)) | (D<=2, !stop(D)) | (C<=2, !stop(C))
     4H     To play: a self-sufficient ♥ suit
            shows (H>=6, quality(H)=3, top5(H)>=4) | (H>=7, quality(H)=3), (S<=2, !stop(S)) | (D<=2, !stop(D)) | (C<=2, !stop(C))
            when  !(texas_3n, texas, !tu)

   after (any auction)
     when asked slam_try(m), partner.last=4{m}, we.trump is none
     6{m}   Small slam: a fit
            shows m>=3
     4N     No fit
            shows m<=2

   after (any auction)
     when answered slam_try(m), partner.last=4N
     6N     Small slam
            shows hcp+partner.hcp.min>=34
     P      To play

   after 1x (P) 1y (P) 2z (P)
     when z is not x, z is not y
     6N     Small slam
            shows points+partner.points.min>=33, !shortest<=1
     4N     Quantitative: invites 6NT
            shows points+partner.points.min>=31, points+partner.points.max<=36, !shortest<=1
            when  q4n, no_ask

   after 1x (P) 1y (P) 1z (P)
     6N     Small slam
            shows points+partner.points.min>=33, !shortest<=1
     4N     Quantitative: invites 6NT
            shows points+partner.points.min>=31, points+partner.points.max<=36, !shortest<=1
            when  q4n, no_ask

   after 1x (P) 2y (P) 2z (P)
     when z is not x, z is not y
     6N     Small slam
            shows points+partner.points.min>=33, !shortest<=1
     4N     Quantitative: invites 6NT
            shows points+partner.points.min>=31, points+partner.points.max<=36, !shortest<=1
            when  q4n, no_ask

== pick-a-slam: Pick-a-slam 5NT: choose among the slams
   file: conventions/slam/pick-a-slam.bid
   card: slam.pick_a_slam_5nt.play
   needs: base
   skills: bidding_conventions/pick_a_slam_5nt
   define pas_fit(x) = we.fit(x).min>=8
   define pas_two_fits = (pas_fit(S), pas_fit(H)) | (pas_fit(S), pas_fit(D)) | (pas_fit(S), pas_fit(C)) | (pas_fit(H), pas_fit(D)) | (pas_fit(H), pas_fit(C)) | (pas_fit(D), pas_fit(C))

   after (any auction)
     when !asked | asked stoppers, partner_bid, partner.last<=4S, rho.last=P | (rho_bid, rho.last<=4S)
     5N     Pick a slam: choose the strain  [alert]  [artificial]
            shows points+partner.points.min>=33, hcp+partner.hcp.min>=30, pas_two_fits

   after (any auction)
     when asked pick_slam
     6S     Pick a slam: spades
            when  we.fit(S).min>=8
     6H     Pick a slam: hearts
            when  we.fit(H).min>=8
     6D     Pick a slam: diamonds
            when  we.fit(D).min>=8
     6C     Pick a slam: clubs
            when  we.fit(C).min>=8
     6N     Pick a slam: notrump

   after (any auction)
     when answered pick_slam
     P      To play

== rkcb-1430: Roman Keycard Blackwood (1430; 0314 as a treatment)
   file: conventions/slam/rkcb-1430.bid
   needs: base
   skills: bidding_conventions/roman_keycard, partnership_bidding/roman_key_card
   define read_only = bare(C), !bare(C)
   define side_kings(t) = controls-keycards(N)-keycards(N)-has(K,t)
   define partner_side_kings = partner.last=6D+partner.last=6H+partner.last=6H+partner.last=6S+partner.last=6S+partner.last=6S
   define our_side_kings(t) = side_kings(t)+partner_side_kings
   define king_held(s) = has(K,s) | partner.last=6{s}
   define kings_unheld(t) = !(t is C | king_held(C))+!(t is D | king_held(D))+!(t is H | king_held(H))+!(t is S | king_held(S))
   define king_margin(t) = hcp+partner.hcp.min>=33, C<=1 | D<=1 | H<=1 | S<=1 | t>=6 | partner.t.min>=6

   after (any auction)
     when k1430 | k0314, we.trump is suit, !minor_given_way, !asked, we.forcing=none | we.forcing=round, !kb_asks(trump), !mw_asks(trump)
     4N     Keycard ask in {trump}  [artificial]
            when  slam_values_limited, !two_bare_suits

   after (any auction)
     when k1430 | k0314, we.trump is suit, !minor_given_way, !asked, we.forcing=game, !answered control, !kb_asks(trump), !mw_asks(trump)
     4N     Keycard ask in {trump}  [artificial]
            when  slam_values

   after (any auction)
     when k1430 | k0314, we.trump is none, !asked, !they.bid
     4N     Keycard ask in ♠  [artificial]
            when  shown_fit(S), we.fit(S).min>=8, fit_slam_values(S), !two_bare_beside(S)
     4N     Keycard ask in ♥  [artificial]
            when  shown_fit(H), we.fit(H).min>=8, fit_slam_values(H), !two_bare_beside(H)
     4N     Keycard ask in ♠  [artificial]
            when  kc_open(S), !shown_fit(S), !shown_fit(H), we.fit(S).min>=8, fit_slam_values(S), !two_bare_beside(S)
     4N     Keycard ask in ♥  [artificial]
            when  kc_open(H), !shown_fit(S), !shown_fit(H), we.fit(H).min>=8, fit_slam_values(H), !two_bare_beside(H)
     4N     Keycard ask in ♦  [artificial]
            when  kc_open(D), !shown_fit(S), !shown_fit(H), we.fit(D).min>=8, fit_slam_values(D), !two_bare_beside(D), hcp+partner.hcp.min>=30
     4N     Keycard ask in ♣  [artificial]
            when  kc_open(C), !shown_fit(S), !shown_fit(H), we.fit(C).min>=8, fit_slam_values(C), !two_bare_beside(C), hcp+partner.hcp.min>=30

   after (any auction)
     when k1430 | k0314, we.trump is none, !asked, they.bid
     4N     Keycard ask in ♠  [artificial]
            when  kc_open(S) | shown_fit(S), read_only
     4N     Keycard ask in ♥  [artificial]
            when  kc_open(H) | shown_fit(H), !shown_fit(S), read_only
     4N     Keycard ask in ♦  [artificial]
            when  kc_open(D), !shown_fit(S), !shown_fit(H), read_only
     4N     Keycard ask in ♣  [artificial]
            when  kc_open(C), !shown_fit(S), !shown_fit(H), read_only

   after (any auction)
     when k1430 | k0314, we.trump is suit, they.bid, asked signoff
     4N     Keycard ask in {trump}  [artificial]
            when  read_only

   after (any auction)
     when k1430 | k0314, minor_given_way, !asked
     4N     Keycard ask in ♠  [artificial]
            when  major_over_minor(S), fit_slam_values(S), !two_bare_beside(S)
     4N     Keycard ask in ♥  [artificial]
            when  major_over_minor(H), !major_over_minor(S), fit_slam_values(H), !two_bare_beside(H)

   after (any auction)
     when k1430 | k0314, we.trump is suit, asked control(t), !kb_asks(trump)
     4N     Keycard ask in {trump}  [artificial]
            when  all_covered
     6{trump} Small slam
            when  all_covered, slam_values, partner.last>=5C

   after (any auction)
     when k1430 | k0314, we.trump is suit, answered control(t), partner.last=4{trump}, !kb_asks(trump)
     4N     Keycard ask in {trump}  [artificial]
            when  all_covered_by_us

   after (any auction)
     when k1430 | k0314, asked keycards(t)
     5C     1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  gstyle is not bba, !m0314 | t is H | t is S
     5D     0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  gstyle is not bba, !m0314 | t is H | t is S
     5C     0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  gstyle is not bba, m0314, t is C | t is D
     5D     1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  gstyle is not bba, m0314, t is C | t is D
     5C     1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  gstyle is bba, !k0314
     5D     0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  gstyle is bba, !k0314
     5C     0 or 3 keycards  [artificial]
            shows keycards(t) in 0|3
            when  gstyle is bba, k0314
     5D     1 or 4 keycards  [artificial]
            shows keycards(t) in 1|4
            when  gstyle is bba, k0314
     5H     2 or 5 keycards, no {t} queen  [artificial]
            shows keycards(t) in 2|5, !has(Q,t)
     5S     2 or 5 keycards and the {t} queen  [artificial]
            shows keycards(t) in 2|5, has(Q,t)

   after (any auction)
     when k1430 | k0314, answered keycards(t)
     7{t}   Grand slam
            when  we.keycards(t)=5, has(Q,t) | partner.has(Q,t) | partner.last=5S, grand_try, !kask5n
     5N     King ask: all keycards and the {t} queen held  [artificial]
            when  kask5n, we.keycards(t)=5, has(Q,t) | partner.has(Q,t) | partner.last=5S
     6{t}   Small slam
            when  we.keycards(t)>=4
     7{t}   Grand slam
            when  kc_high(t), we.keycards(t).max=5, has(Q,t) | partner.last=5S, grand_try, !kask5n
     5N     King ask: all keycards and the {t} queen held  [artificial]
            when  kask5n, kc_high(t), we.keycards(t).max=5, has(Q,t) | partner.last=5S
     6{t}   Small slam
            when  kc_high(t)
     P      To play
            when  partner.last=5{t}, we.keycards(t).max<=3
     5{t}   Signoff
            when  we.keycards(t).max<=3
     5{t}   Signoff
            when  maybe we.keycards(t)>=4
     6{t}   Small slam

   after (any auction)
     when kask5n, asked kings(t), !kspec | t is C | t is D
     6C     No king  [artificial]
            shows side_kings(t)=0
     6D     One king  [artificial]
            shows side_kings(t)=1
     6H     Two kings  [artificial]
            shows side_kings(t)=2
     6S     Three kings  [artificial]
            shows side_kings(t)=3

   after (any auction)
     when kask5n, answered kings(t), !kspec | t is C | t is D
     7{t}   Grand slam
            when  our_side_kings(t)>=3
     7{t}   Grand slam
            when  our_side_kings(t)>=2, hcp+partner.hcp.min>=33, C<=1 | D<=1 | H<=1 | S<=1 | t>=6 | partner.t.min>=6
     P      To play
            when  partner.last=6{t}
     6{t}   Small slam
     6N     Small slam

   after (any auction)
     when kask5n, kspec, asked kings(t), t is H | t is S
     6C     The club king  [artificial]
            shows has(K,C)
            when  t is not C
     6D     The diamond king, not the club king  [artificial]
            shows has(K,D), !has(K,C)
            when  t is H | t is S
     6H     The heart king, no club or diamond king  [artificial]
            shows has(K,H), !has(K,C), !has(K,D)
            when  t is S
     6{t}   No side king below {t}
            shows !has(K,C), !has(K,D), t is not S | !has(K,H)

   after (any auction)
     when kask5n, kspec, answered kings(t), t is H | t is S
     6D     Asks for the diamond king  [alert]  [artificial]
            when  t is H | t is S, !king_held(D), kings_unheld(t)=1 | (kings_unheld(t)=2, king_margin(t))
     6H     Asks for the heart king  [alert]  [artificial]
            when  t is S, !king_held(H), kings_unheld(t)=1 | (kings_unheld(t)=2, king_margin(t))
     6S     Asks for the spade king  [alert]  [artificial]
            when  t is H, !king_held(S), king_held(D) | !partner.last=6C, kings_unheld(t)=1 | (kings_unheld(t)=2, king_margin(t))
     7{t}   Grand slam
            when  kings_unheld(t)=0 | (kings_unheld(t)=1, king_margin(t))
     P      To play
            when  partner.last=6{t}
     6{t}   Small slam
     6N     Small slam

   after (any auction)
     when kspec, asked king_in(z)
     7{trump} The {z} king
            shows has(K,z)
     6H     No diamond king; the heart king  [artificial]
            shows !has(K,D), has(K,H)
            when  z is D, we.trump is S
     6{trump} Neither king
            shows !has(K,z)
     6N     No spade king  [artificial]
            shows !has(K,S)
            when  z is S, we.trump is H

   after (any auction)
     when kspec, answered king_in(z)
     P      To play
            when  partner.last=7{trump} | partner.last=6{trump} | partner.last=6N
     6{trump} Small slam

   after (any auction)
     when k1430 | k0314, asked keycard_correct(t)
     6{t}   Corrects to six: the higher count
            shows keycards(t) in 3|4|5
     P      Accepts the sign-off

== serious-3nt: Non-serious 3NT before control bids in a major-fit game force
   file: conventions/slam/serious-3nt.bid
   needs: base
   skills: bidding_conventions/serious_3nt
   define ns_position = partner.last=3{trump}, !our_notrump
   define ns_count(t) = (longer(t), count_long(t)>=28) | (longer(t), count_long_p(t)>=28) | (shorter(t), count_short(t)>=29) | (shorter(t), count_short_l(t)>=29) | (!longer(t), !shorter(t), count_equal(t)>=30) | (!longer(t), !shorter(t), count_equal_p(t)>=30)

   after (any auction)
     when nsplay, cue, we.trump is suit, trump is H | trump is S, we.forcing=game, !asked, !answered control
     3N     Non-serious 3NT: mild slam interest  [alert]  [artificial]
            shows ns_count(trump)
            when  ns_position, !slam_values

   after (any auction)
     when nsplay, cue, asked ns3nt(t)
     cheapest(C) Control bid in ♣  [alert]  [artificial]
            when  t is not C, under_game(C), slam_interest(t), controlled(C)
     cheapest(D) Control bid in ♦  [alert]  [artificial]
            when  t is not D, under_game(D), slam_interest(t), controlled(D)
     cheapest(H) Control bid in ♥  [alert]  [artificial]
            when  t is not H, under_game(H), slam_interest(t), controlled(H)
     4N     Keycard ask in {t}  [artificial]
            when  k1430 | k0314, slam_values, !side_suit_uncontrolled
     4{t}   Signoff: no slam interest

== slam-catch: Game or slam once a trump suit is agreed
   file: conventions/slam/slam-catch.bid
   needs: base
   skills: partnership_bidding/slam_bidding

   after (any auction)
     when we.trump is suit, we.forcing=game, !asked
     4{trump} Signoff
            when  trump is H | trump is S

== slam-entry: Slam entry: the conditions the slam modules share
   file: conventions/slam/slam-entry.bid
   skills: partnership_bidding/slam_bidding
   define longer(t) = t>partner.t.min
   define shorter(t) = t<partner.t.min
   define count_long(t) = hcp+length_points+partner.tp(t).min
   define count_long_p(t) = hcp+length_points+partner.points.min
   define count_short(t) = tp(t)+partner.points.min
   define count_short_l(t) = tp(t)+partner.hcp.min+partner.length_points.min
   define count_equal(t) = tp(t)+partner.tp(t).min
   define count_equal_p(t) = tp(t)+partner.points.min
   define count_long_max(t) = hcp+length_points+partner.tp(t).max
   define count_short_max(t) = tp(t)+partner.points.max
   define count_equal_max(t) = tp(t)+partner.tp(t).max
   define slam_count_interest(t) = (longer(t), count_long(t)>=29) | (longer(t), count_long_p(t)>=29) | (shorter(t), count_short(t)>=31) | (shorter(t), count_short_l(t)>=31) | (!longer(t), !shorter(t), count_equal(t)>=31) | (!longer(t), !shorter(t), count_equal_p(t)>=31)
   define slam_count(t) = (longer(t), count_long(t)>=30) | (longer(t), count_long_p(t)>=30) | (shorter(t), count_short(t)>=31) | (shorter(t), count_short_l(t)>=31) | (!longer(t), !shorter(t), count_equal(t)>=32) | (!longer(t), !shorter(t), count_equal_p(t)>=32)
   define slam_count_max(t) = (longer(t), count_long_max(t)>=31) | (shorter(t), count_short_max(t)>=32) | (!longer(t), !shorter(t), count_equal_max(t)>=33)
   define slam_values = slam_count(trump) | (tp(trump)>=18, !shown.hcp.max-shown.hcp.min<=4)
   define slam_values_limited = slam_count_max(trump), losers<=4
   define controlled(x) = has(A,x) | (x<=0, partner.x.min<=3) | (style is first_or_second_round, has(K,x) | (x<=1, partner.x.min<=3))
   define first_round(x) = has(A,x) | (x<=0, partner.x.min<=3)
   define side_suit_uncontrolled = (trump is not C, !controlled(C)) | (trump is not D, !controlled(D)) | (trump is not H, !controlled(H)) | (trump is not S, !controlled(S))
   define two_bare_suits = (bare(C), bare(D)) | (bare(C), bare(H)) | (bare(C), bare(S)) | (bare(D), bare(H)) | (bare(D), bare(S)) | (bare(H), bare(S))
   define promised(x) = trump is x | !partner.denied(x) | controlled(x)
   define denials_promised = promised(C), promised(D), promised(H), promised(S)
   define promised_first(x) = trump is x | !partner.denied(x) | first_round(x)
   define denials_promised_first = promised_first(C), promised_first(D), promised_first(H), promised_first(S)
   define covered(x) = trump is x | controlled(x) | partner.cued(x) | me.denied(x)
   define all_covered = covered(C), covered(D), covered(H), covered(S)
   define covered_by_us(x) = trump is x | controlled(x) | partner.cued(x)
   define all_covered_by_us = covered_by_us(C), covered_by_us(D), covered_by_us(H), covered_by_us(S)
   define shown_fit(x) = agreed_fit(x) | partner.x.min>=6
   define shown_eight(x) = shown.x.min+partner.x.min>=8
   define major_over_minor(x) = x is S | x is H, trump is C | trump is D, shown_eight(x)
   define minor_given_way = major_over_minor(S) | major_over_minor(H)
   define our_notrump = we.named(N) | !maybe !partner.balanced | !maybe !shown.balanced
   define last_suit(x) = partner_named(x), partner.x.min>=2
   define no_shown_eight = !shown_eight(S), !shown_eight(H), !shown_eight(D), !shown_eight(C)
   define quant_4nt = q4n
   define kc_shown(x) = shown_eight(x), x is S | !shown_eight(S), x is S | x is H | !shown_eight(H), x is S | x is H | x is D | !shown_eight(D)
   define kc_open(x) = kc_shown(x) | (no_shown_eight, !our_notrump, last_suit(x))
   define fit_slam_values(x) = slam_count(x) | (slam_count_max(x), losers<=4, partner.points.max-partner.points.min<=6)
   define bare_beside(x, t) = x is not t, x>=2, !has(A,x), !has(K,x)
   define two_bare_beside(t) = (bare_beside(C,t), bare_beside(D,t)) | (bare_beside(C,t), bare_beside(H,t)) | (bare_beside(C,t), bare_beside(S,t)) | (bare_beside(D,t), bare_beside(H,t)) | (bare_beside(D,t), bare_beside(S,t)) | (bare_beside(H,t), bare_beside(S,t))
   define kc_high(t) = maybe we.keycards(t)>=4, hcp+partner.hcp.min>=30
   define slam_interest(x) = slam_count_interest(x)
   define no_ask = !bw, !k1430, !k0314
   define direct_count(t) = (longer(t), count_long(t)>=28, count_long(t)+controls>=35) | (longer(t), count_long_p(t)>=28, count_long_p(t)+controls>=35) | (shorter(t), count_short(t)>=28, count_short(t)+controls>=35) | (shorter(t), count_short_l(t)>=28, count_short_l(t)+controls>=35) | (!longer(t), !shorter(t), count_equal(t)>=28, count_equal(t)+controls>=35) | (!longer(t), !shorter(t), count_equal_p(t)>=28, count_equal_p(t)+controls>=35)
   define direct_slam_values = direct_count(trump)

   after (any auction)
     when we.named(N), we.trump is none, !asked, !they.bid, no_shown_eight
     4N     Quantitative: invites 6NT
            shows points+partner.points.min>=31, points+partner.points.min<=32
            when  q4n

   after (any auction)
     when we.forcing=game, we.trump is none, !asked, !game_reached, !they.bid, !we.systems_on
     cheapest(S) Agrees ♠: slam interest
            shows we.fit(S).min>=8, slam_interest(S)
            when  partner.S.min>=3, under_game(S)
     cheapest(H) Agrees ♥: slam interest
            shows we.fit(H).min>=8, slam_interest(H)
            when  partner.H.min>=3, under_game(H)

   after (any auction)
     when we.trump is suit, !minor_given_way, !they.bid, !asked, no_ask
     6{trump} Small slam
            shows direct_slam_values

   after (any auction)
     when minor_given_way, !they.bid, !asked, no_ask
     6S     Small slam
            shows direct_count(S)
            when  major_over_minor(S)
     6H     Small slam
            shows direct_count(H)
            when  major_over_minor(H), !major_over_minor(S)

   after (any auction)
     when we.trump is none, !they.bid, !asked, no_ask, !shown.hcp.max-shown.hcp.min<=4
     6S     Small slam
            shows we.fit(S).min>=8, direct_count(S)
     6H     Small slam
            shows we.fit(H).min>=8, direct_count(H)
     6D     Small slam
            shows we.fit(D).min>=8, direct_count(D)
     6C     Small slam
            shows we.fit(C).min>=8, direct_count(C)

== spiral: Spiral 2NT: how many trumps, minimum or maximum, after 1X-1M-2M
   file: conventions/slam/spiral.bid
   needs: base
   skills: bidding_conventions/spiral
   define sp_max = hcp>=14

   after 1x (P) 1M (P) 2M (P)
     when spiral, x is not M
     2N     Spiral: how many {M}, minimum or maximum?  [alert]  [artificial]
            shows M>=4, tp(M)=11..12

   after (any auction)
     when spiral, asked spiral(M), rho.last=P
     3C     Spiral: three {M}, minimum  [artificial]
            shows M=3, !sp_max
     3D     Spiral: three {M}, maximum  [artificial]
            shows M=3, sp_max
     3H     Spiral: four {M}, minimum  [artificial]
            shows M>=4, !sp_max
     3S     Spiral: four {M}, maximum  [artificial]
            shows M>=4, sp_max
     3N     Spiral: 4-3-3-3 with four {M}, maximum  [artificial]
            shows M=4, shape 4333, sp_max

   after (any auction)
     when spiral, answered spiral(M)
     4M     To play
            when  partner.last=3D | partner.last=3S | partner.last=3N
     3N     To play: balanced
            when  partner.last=3D, M=4, balanced
     P      To play: balanced
            when  partner.last=3N, M=4, balanced
     3M     Signoff
            when  partner.last=3C | (partner.last=3H, M is S)
     P      Signoff
            when  partner.last=3H, M is H