[Cyberyeti]

smerriman, on 2022-September-29, 02:28, said:

Spoiler

So give declarer AQxx of hearts and KJxxx (or KQxxx) of trumps and there's a 13/14 count where a heart return is the only winning defense.

Spoiler

Do you really think he's dropping ♠Q with KJxxx ?

[mikeh]

At the table, my concern was that giving partner an immediate ruff might endplay him…obviously he has a safe diamond exit but then what do I do on a spade to the King?

If declarer has KQJxx AQxx xx xx, I can’t win the ace, since anything but a diamond let’s him draw trump, ending in dummy

KQxxx AQxx Kx xx…..again, no defence.

KQJxx AJxx Kx xx…..

These last two examples are slightly less likely than the first…or KQxxx AQJx xx xx/ KQJxx AQJx xx xx

But basically most hands where we can go plus require partner having the heart king and two spades so those who switched to hearts, as I did at the table, go plus.