Frequently Used Abbreviations
In CardShark BidBase

Here are a few abbreviations we often resort to in the interest of conciseness, as well as a few technical bridge terms. Please refer to the BidBase help files for more information on the use of these abbreviations and other terms.

C, D, H, S, N, x, T - suit abbreviations used in bids, where C=Clubs, D=Diamonds, H=Hearts, S=Spades, x="x" Suit (see file linked above), T=Trump suit agreed by the bidding; e.g.: on bidding of 1S-P-2S, then a reference to T, as in 4T, means 4S. Some bids, such as slam bidding conventions, may use TA, TK, TQ to indicate the top 3 trump cards.

advancer - partner of overcaller/take-out-doubler. Usually called responder.

bid - some number of a suit or notrump. See call.

BON - Bid Order Number. (See docs.)

call - any bid, as well as double, redouble, and pass.

CHO - Center-Hand Opponent (sarcastic). Your partner. See LHO, RHO.

docs - documentation. Help files for BidBase as well as for many conventions.

HCPs - High Card Points, where Ace=4, King=3, etc.

Lefty - The player on the bidder's left. See LHO.

LHO - Left-Hand Opponent. The player on the left of bidder.

Opp - opponent.

pard - your partner. See CHO.

QTs - See: Quick Tricks in the docs.

responder - partner of opener or of any player making a conventional bid. See advancer.

RHO - Right-Hand Opponent. The player on the right of bidder.

Righty - The player on the bidder's right. See RHO.

sac - sacrifice (bid).

S.O.S. redouble - asks partner to bid his best suit to get out of a doubled contract.

specs - specifications for an entry, such as HCPs.

Bidding Database codes:

For Cnv, Sub, and Pct:

    W = We
    T = They
    [blank] = both use it
    0 = neither side uses it
      0 in Cnv will deselect ALL entries for a Convention.
      0 in Sub deselects ALL entries for the same Subcategory of the same Convention.
      0 in Pct deselects only the current entry.


    M = entry is for use in Matchpoints, not IMPs.
    I = for IMPs only.
    D = Double Dummy Analysis
    0-99 = percent of time to use one of 2+ alternative bids.
    [Blank] = always use it unless Cnv or Sub is 0.

Hand Strength:

    Standard HCPs (ONLY):
      HCP1N = range of HCPs a hand must be in for opening 1NT
      HCP2N = range of HCPs a hand must be in for 2NT
      Min = minimum for a NT opening (either 1NT or 2NT)
      Min+ = anything more than the minnimum
      Min+1 = the middle value for opening NT
      Min+2 = the maximum for opening NT
      Min+3 = 1 over the maximum for opening NT (e.g.: a "bad" 18 if 1NT is 15-17)
      Min-1 = 1 under the minimum (e.g.: a "good" 14)

    Distribution Points:

      e.g.:  3+, 5+, 2-4
      T... = Total HCPs + distribution points. (e.g.: T11+, T6-10, T<15)

Suit Point Specs:

    Suit points can be specified in the usual manner: 2-4, 4+, <=2, etc

    A or K specify Ace or King for a suit.

    Points may be specified by using the following codes:

      x = use the "x" specs, as described in the Editor docs.
      a = "AK, KQ, or AQ"
      b = "AJT, KJT, or QJT"
      c = "KQJ, AQJ, or AKQ"
      d = "AKQJ, KQJT, AKQT, or AKJT"
      2stop = "AK, AQ, AJTx, AT98x, KQJ, KQT, KQ9x, KJTx, or KT9x",
      1stop = "A, Kx, QJx, QT9x, Q98x, JT9x, J98xx, or T98xx"
      hstop = half-stop = "Qxx or Jxxx". (See Western Cue Bids.)
      0stop = no stopper. (Opps can take 5 tricks off the top.)
      FRC = First Round Control (either an Ace or Void)
      SRC = Second Round Control (either King or Singleton)
      P = honors are protected by the bidding.
      i# = Intermediates (e.g.: 4+i1 means 4+ HCP and 1 intermediate.)

      X-suit Specs: (See the editor's doc file for more detail.)

        When more than suit matches the specs, BB bids the higher one.
        "U" tells BB to bid "up-the-line" from Clubs to Spades.
        "x,4+" says that if a suit does not match the "x" specs, it must have at least 4 cards.

        When entering a number requirement for a suit, entering "<x" says that the suit is not an x-suit itself but that it must have fewer cards than the x-suit. You can also use <=x, >x, >=x.


      Vul = You are vulnerable (opponents may or may not be)
      Non = You are not vulnerable (opponents may or may not be)
      Fav = Favorable (opponents are vulnerable, you are not)
      Unfav = Unfavorable (you are, opponents are not)
      Eq. = Equal (you both are, or both are not)
      Eq+ = Equal or Favorable

      If you leave the field blank, than any vulnerability is accepted.


      1 = bidder is in 1st seat
      2 = bidder is in 2nd seat
      3 = bidder is in 3rd seat
      4 = bidder is in 4th seat
      F = bidder is in First or Second seat
      T = bidder is in Third or Fourth seat.
      Y = bidder is a passed hand
      N = bidder is an unpassed hand
      P = bidder's partner is a Passed hand
      U = bidder's partner is an Unpassed hand

      If the field is left blank, it means that position does not matter.

    Asks Partner:

      Hx = Help in suit bid (C, D, H, S)
      Cx = Control in suit bid
      Bx = examples of "x": B2C, Bm = bid a minor, BM = bid a major
      P = Pick a suit or pick a slam.
      D = Decide on final contract. May involve Ace-asking, etc.
      A = number of Aces
      K = number of Kings
      KC = number of key cards
      1 = 1-round force
      G = Game force.
      PC = Pass or correct
      SO = Sign-Off.


      Start a disclosure with a left bracket "[" for any notes which you do not want displayed during a game.

      Hx = invites to game if partner can help in suit 'x' (x = HC, HD, HH or HS).
      Cx = asks partner for a control in suit 'x' (x = CC, CD, CH or CS).
      Bxx = asks partner to make the specified bid, such as B2H (="Bid 2H"). Bm=Bid minor.
      P = asks partner to pick a suit and bid game/slam.
      A, K, KC = asks for Aces, Kings, or Key Cards as in Roman Key Card Blackwood.
      1 = forces partner to bid 1 more round.
      G = game force; must keep bidding until at least game is reached.
      O = optional or semi-forcing.
      PC = pass or correct.
      SO = sign-off.

    Disclosure of Strength Expected:

        Description HCPs Example Bids
      B = Bust 0-5  
      W = Weak 6-10 Minimum raise, 1/1 response or overcall.
      I  = Intermediate 10-12 Or Invitational response to opener.
      O = Opener 13-15 Opening strength, game force by responder, TOX strength.
      P = Plus 15-17 Min. opening Plus about a King, strong 1NT opening, Precision 1C strength.
      S = Strong 18-19 Opener's jump-shifts, jump-2NT, reverses.
      V = Very Strong 20-24 Strong 2C or balanced 2NT.
      X = eXtreme 25+  

    Disclosure of Suit Length:

      See the Editor docs for a lengthy explanation of this disclosure.

      Here are some codes used:

        F shows a fit for partner's suit.
        H shows a help suit for partner.
        S shows a short suit.
        C is a cue bid of an Ace or King.

    Abbreviations for some sources:

      Aces - Bobby Wolff's newspaper column
      BD - Alan Truscott - Bidding Dictionary
      Becker - newspaper column
      Bul - ACBL Bridge Bulletin
      BW - Bridge World
      MB - Marty Bergen - P-S (Points Schmoints)
      MH - Max Hardy (Bidding For The 21st Century)
      ML - Mike Lawrence (various books)