One Diamond Bidding System
Opening Bids Responder Rebids by Opener Rebids by Responder
1C, artificial, force 1D: 0-7pts 1NT, balance card, 18-19pts 2C (5-7pts): Stayman; Transfers 2D to 2H etc.
17-21pts opponent double, pass 0-3pts; re-D 4-5pts; 1D 6-7pts C/D/H/S: >= 5 cards, 17-19pts
1H/1S, >= 8点, >= 4 cards Jump C/D/H/S: >= 5 cards, 20-21pts
1NT: 1)8-10pts; 2)2NT: 11-12pts; 3)3NT: 13-15pts
2C/D: >= 8-12pts, >= 5 cards
jump 2H/2S/3C/3D: >=13pts, >= 5 cards
opponent overcall, response double, >= 8pts
opponent overcall, response cue bid,sigleton or void >= 13pts
1D, artificial, force 1H, 0-7pts 1NT:12-14pts. No 4 card Spade, balance hand
12-16pts bid H/S: 4 cards, 12-16pts, no 5 card minors
No 5 card majors bid C/D: >= 5 cards, 12-16pts
1D-1H-2C/2D, not force
Jump Bid: 15-16pts
1S, >= 8pts, >= 4 cards
1)1NT: 8-10pts ; 2)2NT: 11-12pts; 3)3NT: 13-15pts
opponent double, pass 0-3pts; re-Double 4-5pts; 1H 6-7 pts
2C/2D/2H(not jump): >= 11pts, >= 5 cards
Jump (2S/3C/3D/3H): >= 17pts, >= 5 cards
opponent overcall, response double, >= 8pts
opponent overcall, response cue bid,sigleton or void >= 17pts
1H/1S Pass: 0-7pts
12-16pts 2H/S: 8-10pts, >= 3 cards（not force）
>= 5 cards 1S, >= 8pts, >= 4 cards
1)1NT: 8-10pts; 2)2NT: 11-12pts; 3)3NT: 13-15pts
opponent double, pass 0-4pts; re-D 5-7 pts
2C/2D: >= 11pts >= 5 cards
Jump new suit: >= 17pts, >= 5 cards
opponent overcall, response double, >= 8pts
opponent overcall, response cue bid,sigleton or void >= 17pts
Jump 3H/3S: invite 4H/4S 12-14pts, no bid
15-16pts: bid 4H/4S
Jump 4H/4S：8-12pts,has sigleton or void, support H/S pass, or very good hand, 4NT slam try