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含2枚A的弱二开叫范例

#1 User is offline   lycier 

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Posted 2013-April-13, 10:59



这是含2枚A的弱二开叫范例,大家聊聊,可有不同见解?
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#2 User is offline   bluejacket 

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Posted 2013-April-13, 20:30

属于中2开叫范围了
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#3 User is offline   zyp163 

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Posted 2013-April-13, 22:20


如果是这样呢?定约完成的概率也同样不低,但不能叫2S
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#4 User is offline   lycier 

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Posted 2013-April-14, 04:14

 zyp163, on 2013-April-13, 22:20, said:


如果是这样呢?定约完成的概率也同样不低,但不能叫2S


不但能开,而且完全应该开叫2
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#5 User is offline   madongjun 

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Posted 2013-April-14, 18:27

第一个牌例比第二个要好的多。虽然两个都能开叫2S,但结果肯定不一样。
不知道是不是两个牌例都会叫进4S。
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#6 User is offline   lycier 

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Posted 2013-April-14, 18:40

我以为此处的弱二开叫的概念需要厘清:
弱二是攻守兼备的描述性开叫,不是阻击叫。
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#7 User is offline   yunling 

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Posted 2013-April-15, 02:28

得看你2阶开叫的范围,我相信BBO论坛里有不少人会说他拿这手牌开1S。
伯根的时代流行的是无下限的阻击,现在建设性的2阶开叫又开始流行了(2M=9-12,6张套)
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#8 User is offline   wuhuan 

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Posted 2013-April-15, 03:09

这牌如开叫1S,对方叫不到4H。
—————-开叫2S,对方会竟叫的4H,但同伴会认为对方有4H做牺牲叫到4S(其实对方4H没有)。
—————-这就是10P,2个A开叫2S的结果。
这牌如开叫1S,敌我双方可能竟叫的3级,这将会是一个合理的得分结果。
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#9 User is offline   601821297 

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Posted 2013-April-15, 03:25

第三家开叫,叫出1S也不错吧,这牌要有4H,那西家得有多少牌力,如果西家满足此牌力,4S会宕多少?
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