96/05/24


COMPETITION AFTER 1NT OPENING ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 1. vs 1NT Opening 1-1. Unpassed Hand LHO YOU RHO PTN RHO PTN LHO YOU 1NT ?? 1NT P P ?? Dbl = Penalty Dbl ; 15+, usually (semi-)BAL 2C = Unspecified 1-suiter ; 12+, usually good 6+MAJ/MIN 2D = 12+, 5-5/5-4 MAJ 2H = 12+, 5+HEA & good 4+MIN 2S = 12+, 5+SPA & good 4+MIN -> 2NT = 18+, good 5-5/6-5 suits 3X = good 7+MAJ/MIN, PRE 3NT = to play RHO PTN LHO YOU 1NT Dbl P ?? Pass = semi-automatic 2X = weak 5+MAJ/MIN 3X = strong 5+MAJ/MIN, GF RHO PTN LHO YOU 1NT Dbl 2X ?? Pass = weak hand Dbl = Negative Dbl ; promises values 2Y/3Y = good 5+MAJ/MIN, NF 1-2. Passed Hand LHO YOU RHO PTN RHO PTN LHO YOU P P P P 1NT ?? 1NT P P ?? -> Dbl = 8-11, 5-4 MAJ 2C = Unspecified 1-suiter ; 8-11, usually good 6+MAJ/MIN 2D = 8-11, 5-5 MAJ 2H = 8-11, 5+HEA & good 4+MIN 2S = 8-11, 5+SPA & good 4+MIN 2. After 1NT Opening 2-1. Natural Overcall PTN LHO YOU RHO 1NT Dbl ?? -> Pass = to play -> Redbl = to play -> 2X = weak 5+MAJ/MIN -> 2NT = weak 5-5 MIN -> 3X = weak 6+MAJ/MIN PTN LHO YOU RHO 1NT 2C ?? Dbl = Penalty Dbl 2D/2H/2S = 5+DIA/HEA/SPA, NF 2NT = Lebensohl ; transfer to 3C --3C --Pass = weak 5+CLU --3D/3H/3S = good 5+DIA/HEA/SPA, INV --3NT = to play, with CLU STP 3C = Stayman ; promises 4 HEA/SPA 3D/3H/3S = 5+DIA/HEA/SPA, GF 3NT = to play, no CLU STP 4C = Gerber 4D/4H = Texas transfer to 4H/4S ; promises 6+HEA/SPA PTN LHO YOU RHO 1NT 2H ?? Dbl = Penalty Dbl 2S = 5+SPA, NF 2NT = Lebensohl ; transfer to 3C --3C --Pass = weak 5+CLU --3D = good 5+DIA, NF --3H = Stayman ; promises 4 SPA, with CLU STP --3S = good 5+SPA, INV --3NT = to play, with CLU STP 3C/3D/3S = 5+CLU/DIA/SPA, GF 3H = Stayman ; promises 4 SPA, no CLU STP 3NT = to play, no CLU STP 4C = Gerber 4D = Texas transfer to 4H ; promises 6+HEA 2-2. Artificial Overcall PTN LHO YOU RHO 1NT 2C ?? Dbl = Stayman ; same as without 2D/2H = Jacoby transfer to 2H/2S ; same as without 2S = Minor Suit Stayman ; same as without 2NT = transfer to 3C ; same as without 3C/3D = good 6 CLU/DIA, INV, same as without 3H/3S = Short Suit Warning ; same as without 3NT = to play 4D/4H = Texas transfer to 4H/4S ; promises 6+HEA/SPA

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