Trick 3.
Tricks AB, 2
YZ, 1
3. Z A Y B↷
2♠ Kg♠ A♠ 5♠
Remark (Trick 3).—B has four trumps, and defence in hearts and clubs, his partner's suit is established, and no adverse strength in trumps has been exhibited. B therefore leads trumps. (Consider carefully the arguments at pp. [122], [123], respecting leads from four trumps, and apply them to this case.) To judge when to lead from four moderate trumps is an important point in the game, which hands such as this are given to illustrate and explain.
Trick 4.
Tricks AB, 3
YZ, 1
4. Z A Y↷ B
9♣ 5♣ Kg♣ A♣
Trick 5.
Tricks AB, 3
YZ, 2
5. Z A Y B↷
6♠ 8♠ Qn♠ 10♠