CONTRACT: 3NT South
OPENING LEAD: 10 (top of a sequence)
Five sure winners: two spades, and three clubs.
Line of play: establish winners in diamonds or clubs.
Trick 1 W: 10, 3, 5, K
Trick 2 S: 10, 3, 4, 2
East must retain his ace hoping declarer has only two diamonds and no entries to dummy.
Trick 3 S: 9, A, 6, 7
Trick 4 W: 9, J, Q, 6
It is now declarer who must retain his ace hoping East holds only two spades.
Trick 5 E: 4, A, 2, 6
Declarer has no choice to cash his top clubs hoping for a 3-2 break and concede the rest of the tricks to the defense.
The contract is set one trick.
The defense takes five tricks, two spades, two hearts and one diamond.