Simplified Precision Convention for Bridge * = Artificial, HCP = High Card Points (A=4, K=3, Q=2, J=1) C = Club, D = Diamond, H = Heart, S = Spade ------------------------------------------------------------------------------ Opening Bids: 1C*: 16+ HCP, except 4441 shape and balanced 22-24 HCP. 1D/1H/1S: 11-15 HCP, 5+ cards in suit (bid higher of two same length). 1NT: 13-15 HCP, balanced (could have 5 card club suit) 2C: 13-15 HCP w/ 5 cards in suit, or 11-15 HCP w/ 6+ cards in suit 2D*: 13+ HCP, 4441 shape 2H/2S: 6-10 HCP, 6 in suit (Check vulnerability) 2NT: 22-24 HCP, balanced 3C/3D/3H/3S: 6-10 HCP, 7+ cards in suit (Check vulnerability) 3NT: "Gambling", 7+ card solid minor and outside stopper 4C/4D/4H/4S: 6-10 HCP, 8+ cards in suit (favorable vul. only) 5C/5D: 6-10 HCP, 9+ cards in suit (favorable vul. only) 6C/6D/6H/6S: Take-out slam (good suit, need slam to win) ------------------------------------------------------------------------------ Responses to Opener: 1C* (16+ HCP): 1D*: 0-7 HCP w/ no 6+ card suit, or 4441 shape with 8+ HCP 1H/1S/2C/2D: 8+ HCP, 5+ cards in suit 1NT: 8-10 HCP, balanced 2H/2S: 4-7 HCP, good 6 card suit 2NT: 11-13 HCP, balanced 3C/3D/3H/3S: 4-7 HCP, good 7 card suit (if minor, no 4 card major) 3NT: 14-16 HCP, balanced 4C/4D/4H/4S: 4-7 HCP, good 8+ card suit (if minor, no 4 card major) 4NT: 17+ HCP, balanced (Blackwood, ask for Aces) 1D/1H/1S (11-15 HCP, 5+ suit): Pass: 0-7 HCP, no fit or long suit Raise suit 1: 8-10 points, 3+ card support (if minor, no 4 card major) Raise suit 2: 11-13 points, 3+ card support " Raise suit 3: 14-16 points, 3+ card support " Next 4+ suit: 8+ HCP at 1 level, 11+ HCP at 2 level 1NT: 8-10 HCP not necessarily balanced 2NT: 11-13 HCP, balanced, no 3 card fit, unbid suits stopped 3NT: 14-16 HCP, balanced, no 3 card fit, unbid suits stopped Jump to 2 lvl: 4-7 HCP, 6 card suit, no fit (if minor, no 4 card major) Jump to 3 lvl: 4-7 HCP, 7+ card suit, no fit (if minor, no 4 card major) 4C: 18+ HCP, trump suit known (Gerber, asking for Aces) 1NT (13-15 HCP, balanced, possibly with 5 clubs): Pass: 0-8 HCP 2C* (Stayman): 9+ HCP, at least 1 4-card major (not 4333) 2D/2H: 5-8 HCP, good 5+ card major (Jacoby transfer to major) 2NT: 9-11 HCP, balanced (Invitation to game) 3C/3D/3H/3S: Game forcing, showing good suit and distribution points 3NT: 12-17 HCP, balanced (to play) 4C: 18+ HCP, balanced (Gerber, asking for Aces) 2C (13-15 HCP 5 card suit or 11-15 HCP 6+ suit): Pass: 0-8 HCP, no fit or long suit Next 4+ suit: 9+ HCP 3C: 9-12 points, 3+ card support, no 4 card major 4C: 13-15 points, 3+ card support " 2NT: 9-11 HCP, balanced, no 4 card major 3NT: 12-17 HCP, balanced, no 4 card major, other suits stopped Jump to 3 lvl: 4-8 HCP, 7+ card suit, no fit (if minor, no 4 card major) 2D* (13+ HCP, 4441 distribution): 2H/2S/3C/3D: 0-9 HCP, next higher 4+ card suit 2NT*: 10+ HCP, Asks open to bid short suit 3H/3S/4C/4D: 10+ HCP, 4 card suit (bid lower first) 2H/2S (6-10 HCP, Weak 2s): Pass: Game not likely, poor trump support Raise 1 level: 16-18 HCP, 2+ in suit (invitation to game) Raise to game: 19+ HCP and fit, or preempt with 4+ cards in suit New suit: 15+ HCP, 5+ cards in suit, forcing for one round 2NT (22-24 HCP): Pass: 0-3 HCP 3C* (Stayman): 4+ HCP, at least one 4-card major (not 4333) 3D/3H: Jacoby transfer to major 3NT: 4+ HCP, balanced 4C: 9+ HCP, Gerber (ask for Aces) 3C/3D/3H/3S/4C/4D (6-10 HCP, preempt): Pass: Game not likely Raise to game: Enough points for game, or preempt with good fit New suit: 5+ cards in suit, game interest 4H/4S/5C/5D (6-10 HCP, preempt): Pass: Slam not likely 6C/6D/6H/6S: 24+ points and a couple trump (qualitative slam) 4NT: Blackwood (ask for Aces) (only for 4H/4S) 3NT (Solid 7 card minor, outside stopper, "Gambling"): Pass: NT okay 4C/5C: Don't like NT -- opener should pass or bid 4D/5D 4NT: Blackwood (ask for Aces) ------------------------------------------------------------------------------ Rebids by Opener: 1C -> 1D (Opener: 16+ HCP, Responder: 0-7 HCP or 8+ HCP w/ 4441) 1H/1S/2C/2D: 16-21 HCP, 5+ card suit Pass: 0-3 HCP New suit: 4-7 HCP Raise 1: 4-7 HCP 3 card support Raise 2: 5-7 HCP 4 card support Raise 3: 6-7 HCP 5 card support (or good 4 card) Jump new suit: 8+ HCP, 4 card suit (4441 distribution) 1NT: 16-18 HCP, balanced (stayman, jacoby both on) 2H/2S/3C/3D: 22+ HCP, 5+ card suit, forcing 1 round Min NT: 0-3 HCP Raise 1: 0-3 HCP, 3+ card support Raise 2: 4-7 HCP, 3+ card support New suit: 4-7 HCP, 4+ card suit w/ values Jump NT: 4-7 HCP, denies 3 card support 4NT: Blackwood (ask for Aces) 2NT: 19-21 HCP, balanced (stayman, jacoby both on) 3NT: 25-27 HCP, balanced (gerber, jacoby xfer on) ------------------------------------------------------------------------------ Created by Matt Ball. Last updated Jan. 29, 2005. See reference at: http://www.cs.gc.cuny.edu/~xux/bridge/convention/precision.htm