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3NT at BBO
[版面:桥牌][首篇作者:imlate] , 2016年07月20日12:55:01 ,227次阅读,10次回复
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imlate
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发信人: imlate (toolate), 信区: Bridge
标  题: 3NT at BBO
发信站: BBS 未名空间站 (Wed Jul 20 12:55:01 2016, 美东)

IMP, red vs white. Opps keep quiet during bidding.

You pard
1C    1D
1NT   2S
3D    3NT

West leads H2, and you see the nice dummy:
A876
A7
AJ743
Q7

KQ
T98
KT92
A952

East wins HK, and returns H3, and west follows HJ.

3NT seems safe if H is 4-4 as the lead and and return show. Any trap?

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bucky
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发信人: bucky (bucky), 信区: Bridge
标  题: Re: 3NT at BBO
发信站: BBS 未名空间站 (Wed Jul 20 14:21:31 2016, 美东)

想不出有啥问题。唯一需要注意的就是第一张方块不能先打DA,否则方块4-0的时候有
堵塞问题。
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imlate
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发信人: imlate (toolate), 信区: Bridge
标  题: Re: 3NT at BBO
发信站: BBS 未名空间站 (Wed Jul 20 15:03:16 2016, 美东)

That was exactly what happened at the table. The declarer was Benito Garozzo
. I think he realized the problem when he saw east discard H at DA. Then he
played KD, SKQ, then a D.

West held:
Jxx
QJ62
Qxxx
Kx

West (star player) did not duck DQ. I guess he had the illusion to be end-
played if he did so.

【 在 bucky (bucky) 的大作中提到: 】
: 想不出有啥问题。唯一需要注意的就是第一张方块不能先打DA,否则方块4-0的时候有
: 堵塞问题。



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bucky
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发信人: bucky (bucky), 信区: Bridge
标  题: Re: 3NT at BBO
发信站: BBS 未名空间站 (Wed Jul 20 16:30:02 2016, 美东)

好像庄家和防家都犯了错。Duck DQ 非常显然,虽然对这副牌没有区别(因为庄家正好
有红心T98,但如果同伴持H10结果就会大不一样)。

【 在 imlate (toolate) 的大作中提到: 】
: That was exactly what happened at the table. The declarer was Benito
: Garozzo. I think he realized the problem when he saw east discard H at
: DA. Then he played KD, SKQ, then a D.
: West held:
: Jxx
: QJ62
: Qxxx
: Kx
: West (star player) did not duck DQ. I guess he had the illusion to be
: end-played if he did so.



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imlate
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发信人: imlate (toolate), 信区: Bridge
标  题: Re: 3NT at BBO
发信站: BBS 未名空间站 (Wed Jul 20 18:49:59 2016, 美东)

It seems this is not obvious, event it is presented as a problem :)
Ducking DQ would have defeated 3NT here.

【 在 bucky (bucky) 的大作中提到: 】
: 好像庄家和防家都犯了错。Duck DQ 非常显然,虽然对这副牌没有区别(因为庄家正好
: 有红心T98,但如果同伴持H10结果就会大不一样)。



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bucky
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发信人: bucky (bucky), 信区: Bridge
标  题: Re: 3NT at BBO
发信站: BBS 未名空间站 (Wed Jul 20 20:55:39 2016, 美东)

No, on this particular hand, ducking DQ won't help. West is end-played after
winning DQ.

But as I said, it would make difference if East had H10.

【 在 imlate (toolate) 的大作中提到: 】
: It seems this is not obvious, event it is presented as a problem :)
: Ducking DQ would have defeated 3NT here.



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imlate
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发信人: imlate (toolate), 信区: Bridge
标  题: Re: 3NT at BBO
发信站: BBS 未名空间站 (Thu Jul 21 11:38:56 2016, 美东)

As I said, endplay is an illusion. Dummy will be squeezed to bare CQ, or
give up the last D winner. Either way you have an exit.

【 在 bucky (bucky) 的大作中提到: 】
: No, on this particular hand, ducking DQ won't help. West is end-played
after
:  winning DQ.
: But as I said, it would make difference if East had H10.




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bucky
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发信人: bucky (bucky), 信区: Bridge
标  题: Re: 3NT at BBO
发信站: BBS 未名空间站 (Thu Jul 21 20:35:29 2016, 美东)

I see. Good point.

So declarer made a mistake, then defense gave it back. End result: par score.

【 在 imlate (toolate) 的大作中提到: 】
: As I said, endplay is an illusion. Dummy will be squeezed to bare CQ, or
: give up the last D winner. Either way you have an exit.



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imlate
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发信人: imlate (toolate), 信区: Bridge
标  题: Re: 3NT at BBO
发信站: BBS 未名空间站 (Thu Jul 21 20:52:46 2016, 美东)

Not the exact par score. As you noticed at beginning, if you don't play DA,
you have easy 10 tricks. After DA, you need defense mistake to get 9 tricks.
It is not easy for defense though, especially at the table.

【 在 bucky (bucky) 的大作中提到: 】
: I see. Good point.
: So declarer made a mistake, then defense gave it back. End result: par
score.



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bucky
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发信人: bucky (bucky), 信区: Bridge
标  题: Re: 3NT at BBO
发信站: BBS 未名空间站 (Thu Jul 21 21:21:38 2016, 美东)

Ducking DQ can never cost at IMPs. Taking DQ is basically giving up.

But this is on BBO, so maybe both declarer and defender didn't concentrate.
At live table, this will not likely happen at high level.

【 在 imlate (toolate) 的大作中提到: 】
: Not the exact par score. As you noticed at beginning, if you don't play
: DA, you have easy 10 tricks. After DA, you need defense mistake to get 9
: tricks.
: It is not easy for defense though, especially at the table.



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