White cannot answer Kt - B 3, because B × Kt followed by K - K 4 will win a Pawn, on account of the check at K B 3 which cannot be stopped.

11. P - R 4 K - K 4
12. K - Kt 2 R - K B 3
13. R - K 1 P - Q 6
14. R - K B 1 K - Q 5

Now the King attacks White's Pawns and all will soon be over.

15. R × R P × R
16. K - B 2 P - B 3

Merely to exhaust White's move, which will finally force him to move either the King or the Knight.

17. P - Q R 5 P - Q R 3
18. Kt - B 1 K × P
19. K - K 1 B - K 7
20. Kt - Q 2 ch K - K 6
21. Kt - Kt 1 P - B 4
22. Kt - Q 2 P - R 4
23. Kt - Kt 1 K - B 6
24. Kt - B 3 K × P
25. Kt - R 4 P - B 5
26. Kt × P P - B 6
27. Kt - K 4 ch K - B 5

The quickest way to win. White should resign.

28. Kt - Q 6 P - B 4
29. P - Kt 4 P × P
30. P - B 5 P - Kt 6
31. Kt - B 4 K - Kt 6
32. Kt - K 3 P - Kt 7
Resigns.

A very good example on Black's part of how to conduct such an ending.