In the 4♠ contract below, from a team match (IMP scoring, therefore) Frenchman Dominique Pilon found an ingenious defensive play. It was a manoeuvre any bridge player will wish to have thought of himself. As is so often the case with deceptive plays, it presents the opponent with an extra, losing option. Without the deceptive play he couldn't have gone wrong.

W/—		♠	7 6 4
		♥	A Q J 10
		♦	J 9 8 3
		♣	8 3
♠	K			♠	10
♥	9 7 6 5 3 2			♥	K 8 4
♦	7 4			♦	A K Q 10 6
♣	K J 6 2			♣	Q 9 7 5
		♠	A Q J 9 8 5 3 2
		♥	—
		♦	5 2
		♣	A 10 4

(Bridgevaria hasn't been able to retrieve the name of the North player).
In the other room the bidding was the same and the play went as follows: West led the ♦7 and East won the first two tricks with the ♦10 and the ♦A. East continued with a third diamond, declarer ruffing with the ♠9. West overruffed with the ♠K and switched to a club, South winning with the ♣A.
From that moment the contract played itself. In other words: declarer had no choice and had to make his contract. He drew the last trump with the ♠A and crossed with the ♠2 to dummy's ♠6. Next he played the ♥A, pitching the ♣4 from his hand and advanced dummy's ♥Q. East ducked (after all, he knew declarer had another entry in dummy by way of the ♠7), but as mentioned: South had no choice. He discarded the ♣10 and made his contract.

At the table where Pilon was West, the play started off the same way: Pilon led the ♦7 and East, French bridge legend Pierre Jaïs, played a second and third round in that suit. Here too South (Pierre Schemeil, many times captain of the French team) ruffed with the ♠9.
Pilon however, unhesitatingly discarded a club! Declarer can hardly be blamed for assuming the ♠K to be with East. He gave away a club trick, in order to cross to dummy later by way of a club trick and finesse for the ♠K.
East, after winning the club trick (EW's third trick), could now play a fourth diamond enabling West to score the ♠K after all, but this time as the setting trick. Whether this really happened, is not reported, but it doesn't matter: even if East didn't play a fourth diamond, declarer will have finessed for the ♠K, according to plan. When that failed, he would know he had been tricked.