Opening lead: queen of clubs
Mrs. Hayden realized from the bidding that North held an honor in clubs and South was weak in that suit. Instead of leading a low club, however, she made the brilliant lead of the queen. North covered with the king, and East was able to win two clubs and lead a third round of the suit. Stayman ruffed, led to the diamond king, discarded a diamond on the heart ace and played a second diamond. The queen dropped, but this did declarer no good. East overruffed the third diamond with the jack and returned a trump. The finesse for the king lost to West, and that was the setting trick.
Had West opened a low club, declarer could withhold dummy's king. Now, when East won with the 10, if he continued with the ace of clubs he would establish the king for a second diamond discard by South. When the diamond queen appeared, declarer would have no need to ruff a diamond and could play the spades to lose only one trick. Or, if East failed to cash the ace of clubs, declarer could discard his second club on the heart ace and could afford to lose a diamond overruff to East and a trick to West's king and still make his game.