The fall of the queen and ace in this round, leaves A with the winning diamonds and a small one. His suit is virtually established (see p. [57]).
Trick 2.
Tricks AB, 0
YZ, 2
2. Y B Z↷ A
Qn♣ 4♣ 5♣ 3♣
Remark.—A plays his lowest card second hand (see p. [82]).
B allowing the queen to win, may be presumed not to have the king.
Trick 3.
Tricks AB, 1
YZ, 2
3. Y↷ B Z A
7♥ Qn♥ 3♥ A♥