Intermediate and newcomer players - sharpen your game with this series of tutorials. You can browse the index by topic, or read them in order. Learn even more at ACBL's Learn page.
West led the Diamond Ten and Declarer could count 11 top tricks. Where was the 12th? One possibility was the Spade finesse but that was only a 50% proposition and Declarer knew that a 4-2 or 3-3 Club break was a more likely route to the 12th trick. So Declarerís general plan was to unblock the ♥KQ, cross to the ♣K, cash Dummyís Heart winners (pitching Spades), and play on Clubs, hoping for a reasonable break in the suit. But there is a flaw in this line of play, do you see it?