Trick 3.

Tricks AB, 0
YZ, 3
3. A Y↷ B Z
4♣ A♣ 6♣ 7♣

Trick 4.

Tricks AB, 0
YZ, 4
4. A Y↷ B Z
2♣ 10♣ 9♣ Kg♣

Remark (Trick 4).—Y has led from ace, queen, knave, ten; and B, the weak trump hand, has no more clubs.

Trick 5.