Thursday, September 17, 2009

Board 3

Board 3
Opponents vulnerable

♠ K Q J 9 8 7 2 K Q 9 ♣ A Q 5

I open one spade, partner responds one notrump, and RHO overcalls with two diamonds. I bid three spades, and partner raises to four:


NORTH
♠ A 5
10 9 4
J 6 3
♣ K 9 7 6 3






SOUTH
♠ K Q J 9 8 7 2
K
Q 9
♣ A Q 5



West North East South
1 ♠
Pass 1 NT 2 3 ♠
Pass 4 ♠ (All pass)

West leads the four of diamonds (playing third best from even, low from odd). East play the king. What card do you play?

If the opponents were leading fourth best or if your spot were lower than West's, then the queen might induce East to abandon the suit. As it is, East knows that his partner doesn't have four diamonds, so the queen isn't going to fool him. He doesn't know who has the queen, however. And if you play the nine, he still won't know. Not that anything you do is going to matter on this deal. But, as I said earlier, this blog is about process, not results. It's good to get into the habit of thinking about your opponents' problems. If you do that all the time, even when it doesn't matter, it will be easier to do when it does matter. On a different layout, East may have some motivation to underlead his ace at trick two. Or, more subtly, the uncertainly of who has the diamond queen may make it harder for him to place the high cards in some other suit. The nine retains ambiguity and the queen doesn't, so the nine is the right card and queen is a clear error, even if you can't imagine how it could make a difference.

East now plays the ace of hearts, dropping your king, while West follows with the deuce. What can you conclude from this trick?

Conclude is an overbid, but there is a slight inference that East has the queen or jack of hearts. If he didn't he might have underled the ace, hoping to put you to a guess with king-jack. It's not a strong inference, since he might have good reasons for not underleading the ace (the hope that his partner has a trump trick for example). But the fact is he might underlead the ace from ace-empty, and he would never underlead the ace from ace-queen or ace-jack. So, whatever the odds of his having the queen or jack of hearts were a moment ago, they just went up. Again, this information is of no use to you on this particular deal. We're just practicing.

East cashes the ace of diamonds; West plays the five. East plays the queen of hearts. You ruff and claim:


NORTH
♠ A 5
10 9 4
J 6 3
♣ K 9 7 6 3


WEST
♠ 4 3
J 8 5 3 2
8 5 4
♣ 10 4 2


EAST
♠ 10 6
A Q 7 6
A K 10 7 2
♣ J 8


SOUTH
♠ K Q J 9 8 7 2
K
Q 9
♣ A Q 5



I can't imagine why East played the queen of hearts. Obviously Jack has never played opposite Lowenthal. Is there any reason not to play a third round of diamonds just in case partner has led low from a doubleton? I'm not sure why partner would do such a thing, and I certainly wouldn't cater to that possibility if there were anything else to play for. But there isn't.

As you might suspect, the auction and play were identical in the other room.

A couple of days ago, I remarked that one can find something interesting to say about almost any deal. I suppose "interesting" is a matter of debate. But you must admit, it's impressive that one can take as innocuous a deal as this and find something, interesting or not, to say about three of the first four tricks. And I suspect someone could find something to say about the one trick I glossed over. Actually, I'm sure of it. I know a former partner of mine who could write a paragraph or two about the suit-preference implications of the spot West plays under the ace of diamonds, especially if I were West and had played the wrong one.

Me +420
Jack +420

Score on board 3: 0 IMPs
Total: +10 IMPs

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