96/05/24
GOOD-BAD 2NT
^^^^^^^^^^^^^^
1. Applied Situation
Good-Bad 2NT is applied when below ;
1) Opener's bid is 1C/1D/1H/1S
2) LHO's bid is Pass / Dbl / 1-level Overcall
3) Responder's bid is 1-level New Suit / Negative Dbl / Forcing 1NT
4) RHO's bid is 2-level Overcall / 2-level Raise / 2-level New Suit
1-1. After 1/1 Response
1-1-1. 2-level Raise Possible
OPN LHO RSP RHO OPN LHO RSP RHO OPN LHO RSP RHO
1C P/1D 1H 2D 1m P/1X 1S 2D 1m P/1X 1S 2H
1-1-2. 2-level Raise Impossible
OPN LHO RSP RHO OPN LHO RSP RHO OPN LHO RSP RHO
1C P 1D 2H 1C P 1D 2S 1m P/1D 1H 2S
1-2. After Negative Dbl
OPN LHO RSP RHO OPN LHO RSP RHO
1m 1H X 2H 1m 1S X 2S
1-3. After Forcing 1NT
OPN LHO RSP RHO OPN LHO RSP RHO
1H P 1NT 2D/2S 1S P 1NT 2D/2H
2. Opener's Rebid
2-1. 2-level Raise Possible
OPN LHO RSP RHO
1C 1D 1H 2D
??
Pass = 12-17, -2 SUP, no available bid
Dbl = Support Dbl ; usually 12-14, 3 SUP
2H = 12-14, 4 SUP
2S = 15+, 4+SPA, usually -2 SUP, 1RF
2NT = Good-Bad 2NT ; 12-14/18+, 6+CLU, -2 SUP
3C = 15-17, 6+CLU, -2 SUP
3D = 1) 18-19, 4 SUP, no SIN 2) 18+, no available bid
3H = 15-17, 4 SUP
3NT = 18-19, BAL with STP, usually -2 SUP
OPN LHO RSP RHO
1C 1H 1S 2H
??
Pass = 12-17, -2 SUP, no available bid
Dbl = Support Dbl ; usually 12-14, 3 SUP
2S = 12-14, 4 SUP
2NT = Good-Bad 2NT ; 12-14/18+, 6+CLU, -2 SUP
3C = 15-17, 6+CLU, -2 SUP
3D = 18+, 5+CLU & 4+DIA, -2 SUP
3H = 1) 18-19, 4 SUP, no SIN 2) 18+, no available bid
3S = 15-17, 4 SUP
3NT = 18-19, BAL with STP, usually -2 SUP
OPN LHO RSP RHO
1D 1H 1S 2H
??
Pass = 12-17, -2 SUP, no available bid
Dbl = Support Dbl ; usually 12-14, 3 SUP
2S = 12-14, 4 SUP
2NT = Good-Bad 2NT ;
1) 12-14/18+, 6+DIA, -2 SUP 2) 12-14/18+, 5+DIA & 5+CLU, -2 SUP
3C = 15-17, 5+DIA & 5+CLU, -2 SUP
3D = 15-17, 6+DIA, -2 SUP
3H = 1) 18-19, 4 SUP, no SIN 2) 18+, no available bid
3S = 15-17, 4 SUP
3NT = 18-19, BAL with STP, usually -2 SUP
2-2. 2-level Raise Impossible
OPN LHO RSP RHO OPN LHO RSP RHO
1C P 1D 2H 1C 1H X 2H
?? ??
Pass = 12-17, -3 SUP, no available bid
Dbl = Re-Negative Dbl ; 15-17, 4 SUP
2S = 15+, 4+SPA, usually -3 SUP, 1RF
2NT = Good-Bad 2NT ; 12-14/18+, 6+CLU, -3 SUP
3C = 15-17, 6+CLU, -3 SUP
3D = 12-14, 4 SUP
3H = 1) 18-19, 4 SUP, no SIN 2) 18+, no available bid
3NT = 18-19, BAL with STP, usually -3 SUP
OPN LHO RSP RHO OPN LHO RSP RHO
1C P 1H 2S 1C 1S X 2S
?? ??
Pass = 12-17, -3 SUP, no available bid
Dbl = Re-Negative Dbl ; 15-17, 4 SUP
2NT = Good-Bad 2NT ; 12-14/18+, 6+CLU, -3 SUP
3C = 15-17, 6+CLU, -3 SUP
3D = 18+, 5+CLU & 4+DIA, usually -3 SUP
3H = 12-14, 4 SUP
3S = 1) 18-19, 4 SUP, no SIN 2) 18+, no available bid
3NT = 18-19, BAL with STP, usually -3 SUP
OPN LHO RSP RHO OPN LHO RSP RHO
1D P 1H 2S 1D 1S X 2S
?? ??
Pass = 12-17, -3 SUP, no available bid
Dbl = Re-Negative Dbl ; 15-17, 4 SUP
2NT = Good-Bad 2NT ;
1) 12-14/18+, 6+DIA, -3 SUP 2) 12-14/18+, 5+DIA & 5+CLU, -3 SUP
3C = 15-17, 5+DIA & 5+CLU, usually -3 SUP
3D = 15-17, 6+DIA, -3 SUP
3H = 12-14, 4 SUP
3S = 1) 18-19, 4 SUP, no SIN 2) 18+, no available bid
3NT = 18-19, BAL with STP, usually -3 SUP
2-3. After Forcing 1NT Response
OPN LHO RSP RHO
1H P 1NT 2D
??
Pass = 12-17, no available bid
Dbl = Card Showing Dbl ; 15+, no available bid
2H = 12-14, 6+HEA
2S = 15+, 5+HEA & 4+SPA, 1RF
2NT = Good-Bad 2NT ; 12-14/18+, 5+HEA & 5+CLU
3C = 15-17, 5+HEA & 5+CLU
3D = 18+, good 6+HEA, GF
3H = 15-17, good 6+HEA
3S/4C/4D = Splinter Raise ; 18+, good 6+HEA, SIN showing
3NT = 18-19, BAL with STP
4H = 12-15, good 7+HEA
OPN LHO RSP RHO
1S P 1NT 2H
??
Pass = 12-17, no available bid
Dbl = Card Showing Dbl ; 15+, no available bid
2S = 12-14, 6+SPA
2NT = Good-Bad 2NT ;
1) 12-14/18+, 5+SPA & 5+CLU 2) 12-14/18+, 5+SPA & 5+DIA
3C/3D = 15-17, 5+SPA & 5+CLU/DIA
3H = 18+, good 6+SPA, GF
3S = 15-17, good 6+SPA
3NT = 18-19, BAL with STP
4C/4D/4H = Splinter Raise ; 18+, good 6+SPA, SIN showing
4S = 12-15, good 7+SPA
OPN LHO RSP RHO
1H P 1NT 2S
??
Pass = 12-17, no available bid
Dbl = Card Showing Dbl ; 15+, no available bid
2NT = Good-Bad 2NT ;
1) 12-14/18+, 6+HEA 2) 12-14/18+, 5+HEA & 5+CLU
3) 12-14/18+, 5+HEA & 5+DIA
3C/3D = 15-17, 5+HEA & 5+CLU/DIA
3H = 15-17, good 6+HEA
3S = 18+, good 6+HEA, GF
3NT = 18-19, BAL with STP
4C/4D = Splinter Raise ; 18+, good 6+HEA, SIN showing
4H = 12-15, good 7+HEA
3. Further Development
3-1. 2-level Raise Possible
OPN LHO RSP RHO
1D 1H 1S 2H
2NT P ??
Pass = impossible
3C = S/O opposite min hand with better CLU than DIA
3D = S/O opposite min hand with better DIA than CLU
3H = ASK for pattern ; 12+, GF
3S = 6+SPA, INV
3NT = to play
3-2. 2-level Raise Imossible
OPN LHO RSP RHO
1C P 1H 2S
2NT P ??
Pass = impossible
3C = S/O opposite min hand
3D = 5+HEA & 4+DIA, GF
3H = 6+HEA, INV
3S = ASK for pattern ; 12+, GF
3NT = to play
3-3. After Forcing 1NT Response
OPN LHO RSP RHO
1H P 1NT 2S
2NT P ??
Pass = impossible
3C = S/O opposite min hand with better CLU than DIA
3D = S/O opposite min hand with better DIA than CLU
3H = S/O opposite min hand with no CLU/DIA SUP
3S = ASK for pattern ; 12+, GF
3NT = to play