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如何判断这个加倍?

#1 User is offline   lycier 

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Posted 2016-January-14, 07:44

View Postlycier, on 2016-January-14, 00:48, said:

I remembered a JEC hand in which I can't understand his passing.


Assume you are south,after double,would you bid 4♠ or pass?
What's this double? I think it is takeout or cooperative penalty double.
If you think it is takeout, it is reasonable for you to bid 4♠.
If you think it is cooperative penalty double, it is reasonable for you to pass.
So I have been wondering how to estimate for it.

Now I would give everyone JEC hand for reference.

Result : 4♥WX-3 500

Another table :


Result :4♠S-3 300


本题发表在BBO中高级牌手论坛。意思是:
我曾记得一付JEC打过的牌,我不理解为什么JEC会pass。



假如你是南家,同伴加倍后,你是叫4♠还是pass?
这是什么性质的加倍?我觉得是技术性加倍或合作性惩罚性加倍。
1- 如果你认为这是技术性加倍,那你叫4♠就很合理。
2- 如果你认为这是合作性惩罚性加倍,那你pass就很合理。
所以我一直不知道如何界定和判断这个加倍。

现在我给大家提供JEC打的那付牌例。


结果: 4♥WX-3 500

另外一桌:


结果:4♠S-3 300


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#2 User is offline   lycier 

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Posted 2016-January-14, 07:47

懂英文的朋友,可以直接链接该话题,看看老外们是如何着想的。欢迎大家讨论。
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#3 User is offline   lycier 

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Posted 2016-January-14, 07:55

View Postmike777, on 2016-January-14, 02:10, said:

1) you cannot understand pass?
2) see rule of nine
3) 4 level plus 3 trumps plus 2 honors=9 so pass 4+3=2=9


you may disagree

but that does not mean do not understand



新加坡牌手mike777认为界定的方法是:应用九法则。
即:4阶+3张将牌数+含2大=9,(4+3+2=9) 所以pass。
也许你不同意,但不意味着你不明白。
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#4 User is offline   U19 

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Posted 2016-January-14, 09:25

这牌的关键在4H到底是什么意思,如果能明确知道是双套M+m的话,对建设性4Hx,我以为pass是合理的,但如果是单套H的话,S44配,也建议叫4NT的好,否则外面41或者50的S大概率分布,4S也不舒服
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#5 User is offline   002012 

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Posted 2016-January-15, 01:53

对4H以上开叫的加倍,主要是(或首先是)惩罚性加倍。
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#6 User is offline   muronghan 

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Posted 2016-April-12, 23:15

4H开叫后的直接位置加倍,一般现在很少有安排为完全惩罚性的,或许是持一手单靠自己就能打宕对手两墩的牌,比H短的强开叫三套牌,出现的几率还少吧。不管是排除性加倍还是合作性还是whatever,同伴都可以将他转化成惩罚性的。所以如果我坐南,即便是南北单有局的局况,如果打IMP计分,也选择pass。

理由是根据总墩数定律,这副牌的总墩数很可能不超过18,同伴4张S,你方是8;你有3张H,对方最多是10。10+8=18。此外我还记得对方的配合花色里有K, Q这类大牌,好像总墩数还得减。。。总之,如果你们能打成4S,对方至少宕两墩,很可能宕3墩。所以放过加倍。

此外,我认为北对4H的加倍是可以的。我认为北的初衷是排除性加倍。
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