Tricks AB, 4
YZ, 4
8. Z A Y B↷
7♣ 9♣ 4♥ 5♣

Trick 9.

Tricks AB, 5
YZ, 4
9. Z A↷ Y B
3♥ Qn♣ 5♥ 8♥

Trick 10.

Tricks AB, 5
YZ, 5
10. Z A↷ Y B
10♠ 8♦ Knv♦ Qn♦

Tricks 11 to 13.—Whatever Z leads, B makes ace, queen of hearts; and

AB win the odd trick.