96/05/24

FOURTH SUIT FORCING ^^^^^^^^^^^^^^^^^^^^^ 1. Applied Situation 1-1. After 1/1 Response 1C-1D;1H-1S sequence is natural and 1-round forcing only. 1-1-1. 2-level Lower Suit OPN RSP OPN RSP OPN RSP OPN RSP 1C 1H 1D 1H 1D 1S 1H 1S 1S 2D 1S 2C 2C 2H 2C 2D 2-level Fourth Suit lower than first 1/1 Response is Artificial and Game Forcing unless Responder rebids 2NT next. +- -+ | Type 1 : 10-12, 5-card Responder's first suit, INV | | Type 2 : 12+, 5+card Responder's first suit, GF | | Type 3 : 12+, 4+card SUP for Opener's first/second suit, GF | | Type 4 : 12+, no available bid, GF | +- -+ 1-1-2. 2-level Higher Suit / 3-level Suit OPN RSP OPN RSP OPN RSP OPN RSP 1C 1D 1C 1D 1D 1H 1H 1S 1H 2S 1S 2H 2C 2S 2D 3C 2-level Fourth Suit higher than first 1/1 Response or 3-level Fourth Suit is Artificial and unconditionally Game Forcing. +- -+ | Type 2 : 12+, 5+card Responder's first suit, GF | | Type 3 : 12+, 4+card SUP for Opener's first/second suit, GF | | Type 4 : 12+, no available bid, GF | +- -+ 1-2. After 2/1 Response OPN RSP OPN RSP OPN RSP OPN RSP 1H 2C 1S 2C 1S 2C 1S 2D 2D 2S 2D 2H 2H 3D 2H 3C 2-level/3-level Fourth Suit after 2/1 Response is Artificial and unconditionally Game Forcing. +- -+ | Type 2 : 12+, 6+card Responder's first suit, GF | | Type 4 : 12+, no available bid, GF | +- -+ 2DOpener's Rebid +- -+ | 1) show 3-card SUP for Responder's suit ( Jump = 15+ ) | | 2) show minmum with no SUP ( 2X = 12-13 ) | | 3) show Stopper of fourth suit ( 2NT = 12-14, 3NT = 15-17 ) | | 4) show 6+card suit / good 5+card suit | | 5) show good 4+card second suit | | 6) show 4+card fourth suit SUP | +- -+ 2-1. After 1/1 Response OPN RSP 1C 1H 1S 2D ?? 2H = 12-14, usually 3 HEA, may be good 2 HEA 2S = Artificial ; usually 12-13, -2 HEA 2NT = 12-14, with DIA STP, -2 HEA 3C = 12-17, good 5+CLU, -2 HEA 3D = 12-17, 4 DIA ( 4045 exactly ) 3H = 15-17, 3 HEA 3S = unlikely 3NT = 15-17, with DIA STP, -2 HEA 4C = 15-17, (semi-)SOL 6+CLU, -2 HEA OPN RSP 1D 1S 2C 2H ?? 2S = 12-14, usually 3 SPA, may be good 2 SPA 2NT = 12-14, with HEA STP, -2 SPA 3C = 12-17, good 4+CLU, -2 SPA, doesn't promise 5 CLU 3D = 12-17, good 5+DIA, -2 SPA 3H = 12-17, 4 HEA ( 1444/0454 exactly ) 3S = 15-17, 3 SPA 3NT = 15-17, with HEA STP, -2 SPA 4C = 15-17, good 5+DIA & 5+CLU, -2 SPA 4D = 15-17, (semi-)SOL 6+DIA, -2 SPA OPN RSP 1H 1S 2C 2D ?? 2H = Artificial ; usually 12-13, -2 SPA 2S = 12-14, good 2 SPA 2NT = 12-14, with DIA STP, -2 SPA 3C = 12-14, good 4+CLU, -2 SPA, doesn't promise 5+CLU 3D = 12-17, 4 DIA ( 0544 exactly ) 3H = 15-17, (semi-)SOL 6+HEA, -2 SPA 3S = unlikely ( 2NT was available ) 3NT = 15-17, with DIA STP, -2 SPA 4C = 15-17, good 5+HEA & 5+CLU, -2 SPA OPN RSP 1C 1D 1H 2S ?? 2NT = 12-14, with SPA STP, usually -2 DIA 3C = 12-17, good 5+CLU, usually -2 DIA 3D = 12-14, 3 DIA, may be BAL 3H = 12-17, good 4+HEA, doesn't promise 6+CLU & 5+HEA 3S = 12-17, 4 SPA ( 4414/4405 exactly ) 3NT = 15-17, with SPA STP, usually -2 DIA 4C = 15-17, (semi-)SOL 6+CLU, usually -2 DIA 4D = 15-17, 3 DIA ( 1435/0436 exactly ) OPN RSP 1D 1H 2C 2S ?? 2NT = 12-14, with SPA STP, -2 HEA 3C = 12-17, good 4+CLU, -2 HEA, doesn't promise 5+CLU 3D = 12-14, good 5+DIA 3H = 12-14, 3 HEA 3S = 12-17, 3 SPA (3154/3055/3064 exactly ) 3NT = 15-17, with SPA STP, -2 HEA 4C = 15-17, good 5+DIA & 5+CLU, -2 HEA 4D = 15-17, (semi-)SOL 6+DIA, -2 HEA 4H = 15-17, 3 HEA OPN RSP 1H 1S 2D 3C 3D = 12-17, good 4+DIA, -2 SPA, doesn't promise 5 DIA 3H = 12-17, good 5+HEA, -2 SPA 3S = 12-17, good 2 SPA 3NT = 12-14, with CLU STP, -2 SPA 4C = unlikely 4D = 15-17, good 5+HEA & 5+DIA, -2 SPA 4H = 15-17, (semi-)SOL 6+HEA, -2 SPA 2-2. After 2/1 Response OPN RSP 1H 2C 2D 2S 2NT = 12-14, with SPA STP, usually -2 CLU 3C = 12-14, 3 CLU 3D = 12-14, good 4+DIA, -2 CLU, doesn't promise 5+DIA 3H = 12-17, good 5+HEA, usually -2 CLU 3S = unlikely 3NT = 15-17, with SPA STP, usually -2 CLU 4C = 15-17, 3 CLU 4D = 15-17, good 5+HEA & 5+DIA 4H = 15-17, (semi-)SOL 6+HEA OPN RSP 1S 2C 2H 3D 3H = 12-17, good 4+HEA, usually -2 CLU, doesn't promise 5+HEA 3S = 12-17, good 5+SPA 3NT = 12-14, with DIA STP 4C = 12-17, 3 CLU 4D = 15-17, 4 DIA ( 5440 exactly ) 4H = 15-17, good 5+SPA & 5+HEA 4S = 15-17, (semi-)SOL 6+SPA

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