Tricks AB, 2
YZ, 6
8. A Y↷ B Z
9♣ Kg♣ 2♣ 3♦
Trick 9.
Tricks AB, 2
YZ, 7
9. A Y↷ B Z
8♠ 9♠ 6♠ A♠
Remark (Trick 9).—Z's play in not finessing is very good. He can count Y's hand, thus: Y has no more clubs (see Remark, Trick 3), he has the last trump, and three other cards. These cards must either be queen, ten of spades, and a diamond, in which case Z's play does not matter; or the nine returned by Y must be his best spade, in which case he can only have one more, as he would return the higher of two remaining cards (see p. [79]), and his other cards must then be two diamonds. Therefore, assuming the case in which Z's play does matter (i.e., of Y's nine being his best spade), Y's diamond must be guarded.
Trick 10.
Tricks AB, 2
YZ, 8
10. A Y B Z↷
Knv♦ Qn♦ 10♣ 8♦