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Smirnov杯集锦:5431约定叫具体应用

#1 User is offline   lycier 

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Posted 2013-June-28, 19:02

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来自澳大利亚一对牌手采用效率更高的叫牌方式,这就是以前我们在论坛上专贴讨论过5-4-3-1约定叫,意即:双低5-4分布,双高一三分布,这种特殊的[size="2"]牌型是很难描述的,大家可以体味一下:究竟3♥是4441好,还是5431好呢?[/size]
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#2 User is offline   kaisadadi 

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Posted 2013-June-28, 20:59

1N后的变化太多了!
有各种用法和约定,每种用法都有适合的特殊牌型。
说白了,就是一种约定,赋予某种叫品,某种含义。
体系怎么套用比较合理,出现的频率高不高,需要选择。
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#3 User is offline   lycier 

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Posted 2013-June-29, 20:33



当3♥作出邀请后,请思考一下,为什么这牌进局是一个错谬估值后的行动?
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#4 User is offline   lycier 

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Posted 2013-June-29, 20:41



这种牌面对我们而言,定约3♣易如反掌,也是同样的叫牌进程。
不可思议的是另一桌竟然定约5♣,结果是5♣X -3
大家看出我们低花斯台曼的好处了吧。
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#5 User is offline   kaisadadi 

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Posted 2013-June-29, 22:49

3C正确防守,-1
3C能否成为最终定约呢?
北家4441,如果选择X,南叫出3H也没什么难度。
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#6 User is offline   kaisadadi 

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Posted 2013-June-29, 22:53

南家该pass,整手牌控制太差
除D以外,三门花色没控制,尤其SQ*缺少保护张,该示弱
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#7 User is offline   xuefeier 

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Posted 2013-June-30, 00:25

另外除S外,将牌质量差
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#8 User is offline   lycier 

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Posted 2013-June-30, 01:24

1-牌力分散
2-被过高估值的Q太多了
3-主要牌力集中偏赘在边花♣上
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#9 User is offline   yunling 

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Posted 2013-June-30, 10:07

北家应该PASS 1NT,8点均型没有必要在1NT后行动。
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#10 User is offline   madongjun 

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Posted 2013-June-30, 18:23

用了这个约定叫,必然得有其他约定叫或者自然叫牌被迫让步,所以约定叫在一套体系中要系统的用才不会发生冲突。
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#11 User is offline   madongjun 

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Posted 2013-June-30, 23:04

没有中间张支持有Q必须减值,所以开叫不叫1NT也许后续才能把握好。
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#12 User is offline   madongjun 

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Posted 2013-June-30, 23:26

南北家都是边缘牌力,碍于局况不利,才失去争取部分定约的机会,殊为可惜!
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#13 User is offline   yunling 

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Posted 2013-July-01, 11:05

1NT可以MK的牌,去打3C-1 ;)
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#14 User is offline   madongjun 

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Posted 2013-July-01, 20:11

合并帖子后,原先的针对不同帖子的跟帖就按时间顺序重新排列了--给我一种摸不着头脑的感觉。
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