S/EW		♠	K J 10 3
		♥	A 10 3
		♦	9 3
		♣	Q 10 9 7
♠	8 2
♥	Q J 5
♦	K 10 8 7 2
♣	A 3 2

IMP-scoring (team match), so West will do his utmost to defeat the contract. Overtricks (or extra undertricks) are relatively unimportant.

West leads the ♦2. East wins with the ♦A and continues with the ♦J, South following suit with the ♦4 and the ♦5.
Since dummy's ♦9 now disappears, West's ♦1087 become equals. South still has the ♦Q of course.
If West now plays a small diamond, he will succeed if East has another diamond (very well possible, since from originally ♦AJx he will return the middle card, the ♦J). EW will thus score five diamond tricks and the ♣A: down two.
But what if East started with the bare ♦AJ?
How should West defend?

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

West leads the ♥9. How should East defend?
This concerns IMP play (team match). So East will do his utmost to defeat the contract. Overtricks and extra down tricks are relatively unimportant.

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

Butler, meaning IMP scoring.
West enquires after the meaning of the bidding and is informed south has shown a game forcing hand with 5-5 in spades and diamonds.
West has a difficult lead and eventually tries the unbid suit, since this is more often right than wrong. So ♥A hits the table, on which east plays ♥7 and south ♥3.
How should west continue?