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教训：慎用合作性加倍

#1 User is offline   lycier 

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Posted 2013-January-07, 08:44



南家一直北家争叫3♣一般不会是低限牌力，反而面对东家的4♥阻击性加叫，计算联手当有22p，且手里有一枚Ace，以为合作性加倍是成立的。事实上南北两家也真的有联手3枚Ace，这可否时合作性加倍的理由？
看一下西家：这是弱二开叫的最低限，而且♥为将的最低质量要求的6张花色。
想想吧，为何东西合作有4♥定约，而南北合作性惩罚加倍竟会失败？问题出在哪里？能不慎之乎？
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#2 User is offline   lycier 

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Posted 2013-January-07, 08:51

依据简单的数学加减运算可否就是合作性的理由？而4♥得以mk不宕，其背后所蕴含的牌理安在呢？
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#3 User is offline   lipeng2076 

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Posted 2013-January-07, 09:44

牌点从于牌型。从东家叫牌可知敌方将牌是好配合，同时如果敌方牌型有利，存在不同花色单缺下，防守方的边花盈墩将黯然失色。南家持牌防守力量欠缺，SqJ10领头的6张好套里几无防守盈墩，对C无支持，我觉得更适合进取的叫4s。
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