Tricks AB, 1
YZ, 4
5. Z↷ A Y B
9♥ 10♥ A♥ 8♥

Trick 6.

Tricks AB, 1
YZ, 5
6. Z A Y↷ B
Kg♦ 5♦ 6♦ 3♦

Trick 7.

Tricks AB, 2
YZ, 5
7. Z↷ A Y B
7♦ 2♦ 10♦ Qn♦

Remark.—A has echoed. He therefore had at least four trumps originally.

Trick 8.