CONTRACT: 3NT South
OPENING LEAD: 7 (top of a doubleton)
Eight sure winners: two spades, two hearts, one diamond and three clubs.
Line of play: play the club suit for four winners.
Trick 1 W: 7, 3, 10, Q
Trick 2 S: 6, 2, 3, 8
Trick 3 E: K, A, 6, 3
Declarer can now cash his four remaining clubs for a total of ten tricks.
If South does not duck a club at trick two, he will end up a trick short of his contract, with two spades, two hearts, one diamond and three clubs.
Declarer makes his contract plus one overtrick.
The defense takes three tricks: one club and two diamonds.