Monday, January 22, 2007

Bluffing

Here's a hand from this weekend's competition:

Dealer:West
Vul:None
Scoring:imps
Q8
AK7xx
J
KQT9x
KJT9xxx
QT
QTx
7
Ax
8
xxx
AJ8xxxx
xx
J9xxx
AK9xxx
-

An easy one you might think, and you'd be right ofcourse. However it surprised me that my RHO chose the wrong line of play and went down in a lay down contract.

Here's what happened: the auction is over quite fast, and some may disagree with North's bid. However, it worked ok.
3 - 4! - 4 - 5
all pass
4 showed a good 2-suiter with and , aka "leaping Michael's". Technically the hand is a bit too weak for this (too many losers).

I was sitting West and lead J. Partner took his Ace, thought for 5 seconds and returned a to my King. I figured that partner would have cashed A before returning if he had it, and same goes for A. So the only chance seemed to be a trick. Obviously we can only make a trick when we play in triple void and partner has J or declarer ruffs high to avoid a trump promotion of singleton Q. So I played 2, making sure declarer would know that my partner didn't have any s left, and to face him with a problem.

Now declarer took 5 minutes to make a wrong choice. He ruffed with the Ace, played K and was quite surprised to see the Queen in my hand!

I thought this was a wrong move, but my view was already biased, so I polled about what others would do. None went for A. So I guess my analyse was right. What South should've thought about is "how does West know it's safe to play in a triple void?". If you can answer that question, then you'll know that West has Q with a high probability.

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