West cashed his two heart winners, and it might seem that South was doomed.

So West must cash the heart ace, seeking guidance from his partner.

West won with the ace, cashed one high heart and led the club king.

Looking at all four hands, it is easy to see that West could have cashed six heart tricks.

West cashed the club ace and shifted to the heart ten.

West should have cashed the diamond queen, and then played a club or a heart.

West cashed the club queen, then shifted to a heart.

West cashed his two top clubs, then continued with a third round.

West cashed three heart winners, reaching the moment of truth, and led a club.

West won with the king and cashed two diamond winners.