Tricks AB, 1
YZ, 5
6. B Z↷ A Y
6♣ A♣ Knv♣ 2♣

Trick 7.

Tricks AB, 1
YZ, 6
7. B Z↷ A Y
4♦ A♦ 8♦ 6♦

Trick 8.

Tricks AB, 1
YZ, 7
8. B Z↷ A Y
10♦ 7♦ 9♦ Knv♦

Trick 9.