# BBO Discussion Forums: 如何判断这个加倍？ - BBO Discussion Forums

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## 如何判断这个加倍？

### #1lycier

• AlphaBridge
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Posted 2016-January-14, 07:44

lycier, 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 : 4WX-3 500

Another table :

Result :4S-3 300

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。

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### #2lycier

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Posted 2016-January-14, 07:47

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### #3lycier

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Posted 2016-January-14, 07:55

mike777, 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

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### #4U19

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Posted 2016-January-14, 09:25

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### #5002012

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Posted 2016-January-15, 01:53

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### #6muronghan

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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。

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