Tricks AB, 5
YZ, 4
9. Y B Z A↷
10♦ 8♦ Knv♠ Kg♦
Remarks.—At Trick 9, A forces the best trump, and remains with the thirteenth to bring in the diamond. If Z refuses the force, A (Trick 10) leads nine of diamonds and (Trick 11) the losing trump.
Trick 10.
Tricks AB, 6
YZ, 4
10. Y B Z↷ A
2♥ 9♣ 2♣ 7♣
At Trick 10, if A plays ace of clubs he will be left with a losing club. By passing, he gives B a chance of winning the trick, and cannot lose even if Y has king of clubs. It has been suggested that Z's best lead, at Trick 10, is king of clubs, on the chance of catching ace and knave; but Z's play is not under examination.
Tricks 11 to 13.—Whatever B leads, A makes the remaining tricks, and
AB win three by cards.