TRICK 1.--As the club suit is blocked, Y needs two entry
cards, one to establish the suit and the other to obtain the lead and
make it. Z, therefore, overtakes the jack of spades with the ace, to
make it possible for Y to have two entry cards.
TRICK 5.--Without reference to the position of the cards,
A’s lead of the five of spades is bad. The game is lost unless B
holds the diamond suit, and his best play is undoubtedly the ace and
the jack of diamonds. As the cards are placed, however, this would
give the dealer an additional trick.