[PeterAlan]

This hand came up in the Swiss Pairs (Session 2, Board 9) at the London Year End Congress - I'm posting it because it interested me, and I hope it might interest others:

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At our table it was played in 3♠ by N/S, but the interesting contract is 4♥ by W. The ♦s are frozen and there aren't the entries to set up the ♣, so it's hard to see where the 10th trick comes from, but after ruffing a spade and running the trumps the following position arrives:

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Now the last ♥ squeezes both N and S in the minors. N must throw a ♣ to protect the ♦ position, then a ♦ goes from dummy and to keep the ♣ guard S must pitch a ♦. Then ♦ to Q, ♣A and ♦10 to K.

I'm very far from being expert in squeezes, but it didn't seem to be a simple type and I'd be interested to learn the classification from those who are.

[JLOGIC]

It is not a very practical line since it fails even if north has A9x (not to mention AJx), since he would pop with the DA and play a club and now you lose either a diamond or a club at the end.

That said, I don't know what it is called. I think of this type of position as a double sqz in the same suits but I'm sure there's some terminology.

[PeterAlan]

Thanks for the response, Justin. It came to me as a double dummy problem - someone raised it the next day - so I didn't have to concern myself with the right line to take at the table.

[nige1]

PeterAlan writes " This hand came up in the Swiss Pairs (Session 2, Board 9) at the London Year End Congress - I'm posting it because it interested me, and I hope it might interest others:
At our table it was played in 3♠ by N/S, but the interesting contract is 4♥ by W. The ♦s are frozen and there aren't the entries to set up the ♣, so it's hard to see where the 10th trick comes from, but after ruffing a spade and running the trumps the following position arrives:"

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"Now the last ♥ squeezes both N and S in the minors. N must throw a ♣ to protect the ♦ position, then a ♦ goes from dummy and to keep the ♣ guard S must pitch a ♦. Then ♦ to Q, ♣A and ♦10 to K.
I'm very far from being expert in squeezes, but it didn't seem to be a simple type and I'd be interested to learn the classification from those who are."

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(Slightly simplified diagram)
Maybe it's an unusual and pretty vice-squeeze variation

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[PeterAlan]

Thank you, Nigel. I thought it was interesting that the ♦ suit was frozen for everyone, with each defender not only unable to play it but also unable to discard from it without allowing declarer to establish a second ♦ trick by force, and that this defence is finally broken up by the squeeze in the endgame.