Thursday, October 8, 2009

Board 18

Unfortunately, I was defender on this deal. The defense was trivial, but the there was an interesting problem in the declarer play. I'm pretty sure I would have solved it given the chance, but I'll never know for sure. It's certainly easier when you know all four hands. In order to give you a chance, I'm going to break with the usual format and present this deal from my opponent's point of view:

Board 18
Opponents vulnerable

NORTH
♠ K J 5 3 2
3
Q J 8
♣ A J 9 8






SOUTH
♠ A Q 8 7 6
K 10 7
K 9 6
♣ 10 3




West
North
East
South
1 ♠
Pass
2 NT1
Pass
4 ♠2
(All pass)
1At least four-card support, gameforcing
2Minimum, no singleton or void


I'm not sure why partner chose two notrump instead of a splinter in hearts, but that's what he did. West leads the four of clubs. You rise with the ace, on which East plays the seven and you play the three. You play a spade to your ace as East pitches the deuce of clubs. How do you play from here?

-----

East's club deuce at trick two was a poor choice, since it clarifies the club position for you. The fact that he is pitching a club at all marks him with either five or six. But pitching the deuce marks him with six. The deuce was the only remaining club lower than the one West led. Once East lets you see it, you know the lead was a singleton.

Obviously, your contract is in no danger. You are simply playing for an overtrick. It seems that your only chance for an overtrick is to score your heart king. East has no conceivable reason to duck the heart if you lead dummy's singleton. But if West has the ace, perhaps you can contrive to get him to underlead it in an attempt to get a club ruff. Lead the king of diamonds at trick three. (Don't lead low, because you want to ensure that West takes the ace if he has it.) If West has both red aces, he now has a chance to beat you if you have queen third of clubs and no heart king. He wins the diamond and underleads his heart ace to his partner's putative king. His partner can then play king and a club. Your only risk in trying this is that you might run into a diamond ruff. But, this would require the opponents to have kept silent with something like

♠ x x x Q J x x x x x A x ♣ x


opposite

♠ -- A x x x x x x ♣ K Q x x x x


Unless I were playing against Edgar and Norman, I wouldn't worry about it. If the king of diamonds holds, however, I'm not playing a second one. Now the risk of running into a diamond ruff is more realistic.


NORTH
♠ K J 5 3 2
3
Q J 8
♣ A J 9 8


WEST
♠ 10 9 4
A J 9 8 5
A 7 3 2
♣ 4


EAST
♠ --
Q 6 4 2
10 5 4
♣ K Q 7 6 5 2


SOUTH
♠ A Q 8 7 6
K 10 7
K 9 6
♣ 10 3




Perhaps you think no one would ever fall for this. Out of curiosity, I replayed this board with myself declaring and Jack defending just to see if it would work. It did. Jack duly grabbed the ace diamonds and switched to a low heart. I agree this would never work at matchpoints. But at IMPs, when the opponents are desperately trying to defeat you, you can often swindle an overtrick by dangling a false hope in front of them.

In the actual play, neither declarer found this line.

Me: -420
Jack: -420

Result on Board 18: 0 IMPs
Total: +39 IMPs

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