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问题请教(1)


k3q2

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喜闻你博学桥书,不应该请教这些问题,相反你可以系统整合后帖出来,至少你本人要消化好。这是我真诚的鼓励!

 

我尽所能回答:哈代21世纪教材,规定了1nt开叫有5张高花的三个条件,对后续stm答叫没有限定。按照我对哈代的理解,一般不会跳答三阶浪费空间,承诺在竞叫中再加一级。

 

关于开1nt后有很多流行的约定叫,其中stm后就包括你写的:贝尔约定叫,高限5张跳答三阶等;如果不用贝尔,就有机会用递进stm或SARS(用3c),类似你说的问牌型。

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