Tuesday, November 24, 2009

Which squeeze?

I'm interested in problems where there are multiple squeezes you might play for and selecting the best one. There are some of these in recent posts. Here's one that I just constructed:

A K Q 4 3
K 10 4
K 7 6
6 4
6 5
A 9 3
A 9 3
A K Q J 10

You're in 7N facing the ♠J lead. How do you play?

This might not be right, but let's say that you start with 3 rounds of spades and RHO shows out on the 3rd round. Take over from there (don't forget to pitch something on this trick!).

Some thoughts below, my full answer tomorrow.

If you've been reading the blog at all recently, you've probably noticed some compound squeeze talk. One line is to pitch from one red suit, run 4 clubs pitching a spade and the other red suit from dummy, coming down to something like this with 6 tricks to go:

K 10
K 7 6
A 9 3
A 9

LHO is known to hold a spade guard, so can't guard both red suits. Play off the king and ace in the red suit they've unguareded, then the ♣10 effects a double squeeze.

So, you can always make it on this line if you read LHOs shape properly. Say he starts with 2 clubs, though. He'll always be able to pitch 1 from each red suit and you'll have to guess which suit he started with a majority of -- a straight 50-50 guess.

I think there's a different line with much slightly better odds.