[pclayton]

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Here's a hand Bocchi played in the 4th segment. You play in 4♥ from the short side after a transfer sequence.

1. 4♦, 2, A, 8
2. 4♥, 8, J, Q
3. 3♥, 6, K, 7
4. 9♣, 5, 3, Q
5. 2♥, 9, ♦6, 5
6. 10♣, A, 7, 6
7. 2♣, J, 8, 4

With the lead in dummy, the position is now:

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Unlucky that the Q♣ wasn't onside, however the defense has made a mistake (what is it?). Can you find a way home from here?

Note: See if you can do better than the commentators. Only ONE spotted the line (Bramley), even looking at all four hands, and even Bart didn't mention it until about trick 5.

If you spot the solution, please respond in hidden text.

[inquiry]

Text Unhidden since phil confirmed this happened

The clue here is that WEST seems to have the diamond king. He will have to keep two diamond, least you ruff the ten and drop the king. East, hopefully has teh diamond JACK, he will have to keep two diamonds, least you lead the diamond queen and pin the diamond jack. This causes a problem.. if RHO has to keep two diamond, and LHO has to keep two diamonds, who can keep three spades?

Cash club king, pitch a spade. Cash heart pitch a spade. Looking for an ending such as this....

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If either opponent comes to one less diamond, you have to guess that. Now cash spade AK, ruff a diamond, and dummy spade is good.

Mistake? Not returning a spade when in with the club QUEEN to break up the squeeze entry conditions.

[flytoox]

Spoiler

Given the hint, this is easy, cashing CK, discarding spade from the hand, cashing HA, they are sqzed in diamond, if LHO had Dk and RHO has DJ.

hidden button is not working? hehe, never mind, i may be wrong.

[Free]

Spoiler

The only possible way to make this is a squeeze imo. Seems like a ruffing squeeze where both opps have a ♦ honour which they need to keep covered, and you have your 2 entries to be able to pull it off if one of them loses a ♦ too much.

This also means EW's mistake is clearly not playing ♠s to destroy one of these entries... One ♠ entry less and your ruffing squeeze doesn't work anymore.

[pclayton]

I'm not surprised the posters here saw it. The posters got it right.

The position is called a double ruffing squeeze. Bramley called it a double trump squeeze; close enough I guess.

There were at least 4 other 'world class' players that didnt spot this even looking at all four hands. One said it wasnt makeable because the club Q was offside.

By the way, Bocchi got it right at the table. The other table was +140. Does anyone think a spade shift by East (Rosenberg in this case) is that far-fetched? I suppose if declarer had AQxx or KQxx of spades and the A♣, the shift doesnt look too bright from Jxx.