#10: An Unusual Carding Problem
North's 2♦ was a positive response, showing at least an ace, a king, or two queens.
Sitting west, your lead of the
♠8 is taken
by south's ace. Declarer cashes the ace and king of clubs, noting
your discard. Then he plays the ten of spades to dummy's queen as
partner follows low, and runs the club ten. A fourth round of clubs
to the queen drops partner's jack. The spade king is cashed, upon
which partner discards the ♦2, to this position:
South now leads the jack of spades. What do you discard, and why?