this is very a very Routine crisscross squeeze if East doesn't knock out the club Ace when in with the heart ace. If he does knock out the club Ace, then it becomes A normal trump squeeze.
the trump SQueeze uses the heart Queen as the squeeze Card, (East can't duck two hearts on he is endplayed after South cashes the club ace.)
Ending one-crisscross
When you cash the last spade, throw diamond from dummy. If East throws A club, cash dub ace and go to dummy using the diamond Ace. If East discards a diamond, cross to the diamond ace, then Rohm to Yom hand with the club AE to win your diamond Nine.
Ending two, trump squeeze
the trump squeeze is very similar to The crisscross squeeze. You simple use the last trump as a super club Ace. Cash the heart Queen. If East pitches a club, Ruff a club and then go back to the diamond Ace. If he throws A diamond Ace then ruff a club.
Finding this is Easy. You have 11 tricks, no obvious 12th so you Need to Nik squeeze. Only Possible threat suits are diamonds and clubs I art have a threat k the UPPER hard, you have to here the threat in diamonds be in South. This requires An entry to club threat in North Which has to be the diamond Ace, And entry to the club threat in South which has to be club Aee on club ruff. This makes The correct ply jump off the page-especially double dummy, but should be seen easily single dummy as well.