Signals And Discards

Board 2
East Deals
N-S Vul

♠	A Q 7 6
♥	9 8 3
♦	9 3
♣	K J 9 8

♠	5 4
♥	A Q 10 6 5
♦	7 5 2
♣	7 6 2

N
W		E
S

♠	J 10 9
♥	J 2
♦	A 8 6 4
♣	Q 10 5 4

♠	K 8 3 2
♥	K 7 4
♦	K Q J 10
♣	A 3

♠ J is a safe lead. West's first discard should be the ♣ 7 - showing no honour.
Now, when declarer plays the diamond suit, East can win and knows to switch
to the ♥ J. This defeats the contract.