Trick 8.
Tricks AB, 3
YZ, 5
8. B Z A Y↷
4♦ Knv♦ 9♥ Kg♦
Trick 9.
Tricks AB, 3
YZ, 6
9. B Z A Y↷
6♦ 5♠ 10♥ 5♣
Remark (Trick 9).—Well played by Y. He can count B's hand as follows: ten and two small diamonds; queen of spades (see Trick 6—the lead of the king could only be from king, queen); and one other card, probably a small spade, for had B another heart he would most likely have continued his partner's original lead, instead of changing the suit. Y now leads a trump in hopes that B will discard the small spade, when Y will lead the seven of spades to throw the lead into B's hand, and B will be obliged to lead a diamond up to Y's tenace.
B, however, discards a diamond. Y continues his tactics (see Trick 10), leading another trump. This compels another discard from B. If B discards the small spade, Y leads the losing spade; if B discards another diamond, Y establishes the diamonds, and in either case wins the game. This fine coup occurred in actual play.
Trick 10.