This is actually a hand I played in the red ribbons. This ending occurred at our table.
Hearts is trump, south to play. When south leads a trump, LHO makes the mistake of discarding his remaining spade, and North discards a club, RHO being caught in a squeeze - if he discards a club, ace and another club will see declarer home, and if he discards a diamond, declarer can lead a club to the ace, ruff out the diamond ace, and then lead a small club from hand.
Any idea what this squeeze is called?

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