[lamford]

7NT by South. ♦4 lead

I guess the heading is slightly inaccurate, as the chance of making this grand after the lead is 1 in 10,400,600. You have a bidding misunderstanding, but the play's the thing as they say. How do you play, single-dummy, on the diamond lead. Keen students of the feature "an unusual squeeze" will find this duck soup.

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Corrected (I hope) after cyberyetis’comments.

[Cyberyeti]

This seems too easy, play E for KQJ(x), KQJ(x), J10xx(x), Kx (or stiff ♣K and an extra card elsewhere), bidding may tell you if you have to go elsewhere.

win the diamond, hook the club, go back to dummy with the third club and rumble the rest.

You are down to:

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What can E keep he has to hold 3 diamonds and 2 in each major or the extended menaces mean you have 6 tricks immediately

[Vampyr]

Cyberyeti, on 2019-March-07, 07:07, said:

This seems too easy, play E for KQJ(x), KQJ(x), J10xx(x), Kx (or stiff ♣K and an extra card elsewhere), bidding may tell you if you have to go elsewhere.

win the diamond, hook the club, go back to dummy with the third club and rumble the rest.

You are down to:

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What can E keep he has to hold 3 diamonds and 2 in each major or the extended menaces mean you have 6 tricks immediately

Yes. I need to change the original.

[Cyberyeti]

Vampyr, on 2019-March-07, 07:30, said:

Yes. I need to change the original.

Not sure if that completely fixes it, KQJ10, KQJ10, J1098, K still gets done more or less the same way, but is at least MUCH more unlikely.

[nige1]

A similar deal, something like this,
constructed for an article on 3-trick squeezes,
(published in Bridge-Magazine, about half a century ago).

6N by South on a ♠ lead.

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[lamford]

Cyberyeti, on 2019-March-07, 07:50, said:

Not sure if that completely fixes it, KQJ10, KQJ10, J1098, K still gets done more or less the same way, but is at least MUCH more unlikely.

indeed that I think is the only layout and only for East. So you must cash the AC and play the hexagon squeeze you gave.

[PeterAlan]

lamford, on 2019-March-07, 06:27, said:

I guess the heading is slightly inaccurate, as the chance of making this grand after the lead is 1 in 10,400,600.

Pedantry alert: after any specified opening lead the number of possible distributions of the remaining 25 cards is 5,200,300.

[Cyberyeti]

nige1, on 2019-March-07, 09:01, said:

A similar deal, something like this,
modified to make the layout unique,
constructed for an article on 3-trick squeezes,
(published in Bridge-Magazine, about 50 years ago)

6N by South on a ♠ lead.

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Cash ♠AKQ, if E discards 2 cards in any red suit, you have 5 in that suit one in the other via overtaking and 3 in each black suit, so he discards one in each suit, now you just play 4 rounds of clubs, win whichever red suit is returned, cash the remaining clubs, overtake the other red K and cash dummy's ace for the final trick.

[nige1]

Another deal, something like this, published in the Bridge World. about a decade ago.
I claim this to be a 4-trick squeeze but Jeff Rubens disagrees
6N by South on a ♠ lead.
In particular, how do you play if East abandons a red suit?

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[nige1]

Cyberyeti, on 2019-March-07, 09:13, said:

Cash ♠AKQ, if E discards 2 cards in any red suit, you have 5 in that suit one in the other via overtaking and 3 in each black suit, so he discards one in each suit, now you just play 4 rounds of clubs, win whichever red suit is returned, cash the remaining clubs, overtake the other red K and cash dummy's ace for the final trick.

That's right Cyberyeti.
I'm afraid my layout isn't unique,
so I shouldn't hijack Lamford's thread. Sorry.

[nige1]

lamford, on 2019-March-07, 09:01, said:

indeed that I think is the only layout and only for East. So you must cash the AC and play the hexagon squeeze you gave.

PeterAlan, on 2019-March-07, 09:03, said:

Pedantry alert: after any specified opening lead the number of possible distributions of the remaining 25 cards is 5,200,300.

More pedantry: it's an automatic triple squeeze for 2 tricks.

[lamford]

And in the thread Unusual Squeeze it is an automatic triple squeeze for 4 tricks. Also there is a restricted choice element regarding the opening lead. Before it the chance of success was 1 in 10,040,600. After it is either the same or zero depending on whether the card led allows success.

[lamford]

.

[Cyberyeti]

lamford, on 2019-March-07, 11:07, said:

And in the thread Unusual Squeeze it is an automatic triple squeeze for 4 tricks. Also there is a restricted choice element regarding the opening lead. Before it the chance of success was 1 in 10,040,600. After it is either the same or zero depending on whether the card led allows success.

Not quite, say west leads a top of nothing 8♦, now any J109x will do with E so the odds can change.