◇ 1N!-2D!; 2H!

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1N! 2D!
2H!     BAL, w/o 5M6m
2S      5S
2N!     5H
3m      6m
3H!     2245
3S!     2254
3N!     科科


1N! 2D!
2H! 2S  5+S, [R], ask fit
    2N! 5+H, [R], ask fit
    3C! [R], ask control
    3D! stayman
    3H! 15+ HCP, H spl, [R]
    3S! 15+ HCP, S spl, [R]
    3N! 15+ HCP, D spl, [R]
    4C! 15+ HCP, C spl, [R]
    4D! minors, 55+, ST (4H=set C, 4S=set D)

1N! 2D!
2H! 2S/2N!
        +1      2張無honor
        +2      2張有honor
        +3      3張無honor
        +4      3張有honor
        +5      4+張 or 3張帶AK/AQ
    then 叫新花=[R], 問AK       (+1/2/3/4=no AK/K/A/AK)
         but若問到2張支持, 再叫4m是5+m不是問AK, 之後除了5m外都是控制/kickback
    叫回王牌為S/O, 叫王牌+1為kickback rkcb


1N! 2D!
2H! 3C!
3D!/3H!/3S!/3N! 5-6/4/3/1-2 control
    then 叫新花=[R], 問AK       (+1/2/3/4=no AK/K/A/AK)
    then 叫舊花=[R], 問Q        (+1/2=無/有)
    叫成局或去滿貫是S/O


1N! 2D!
2H! 3D!
3H      4H, may w/ 4S
    3S! H fit, control
    3N  misfit, 4S w/o 4H, CoG
    4m  NAT or control
    4H  S/O
    4S! H rkcb
    4N  QUANT
3S      4S w/o 4H
    3N  S/O
    4m  NAT or control
    4H! S fit, control
    4S  S/O
    4N  S rkcb
3N      no 4M
    4C! ask minor       (the same as 2N-3C; 3N-4C!)


1N! 2D!
2H! 3H!/3S!/3N!/4C!
        +1      浪費很多力量
    then +1=15-17 HCP, P/C; +2=18-20 HCP, SI, +3=CoS
        others  無浪費力量並選定王牌
    then 叫新花=問AK, 叫王牌+1=kickback rkcb


key :1N!-2D!; 2H!後的詢問叫
     2S/2H!  五階詢問叫→新花問AK→舊花問Q
     3C!     問控制(5-6,4,3,1-2)→新花問AK→舊花問Q
     3D!     stayman
     3H!/3S!/3N!/4C! 叫出短門詢問力量是否浪費