East, who had thrown his heart on the third diamond, discarded a club.

South guessed right by putting up the king and discarded a club.

Only then will South know whether to discard a heart or a club on the diamond winner.

He could then allow East to win, discarding a club.

He did, after running diamonds, and the heart position was revealed when East discarded a club.

He discarded a club from his hand and could not now be defeated.

She must cash the diamond nine and discard a club from her hand.

When East discarded a club, there was still work to be done.

His best chance is to discard a club from the dummy.

South must call for a heart, and then discard a club or a diamond from his hand.