... 14. K to K sq.
15. Kt to K 5 15. K to Q sq.
16. B to K 4 16. K to B 2
17. Kt to B 4 ...
The Black King is now gradually forced on to the fatal White corner.
... 17. K to Q 2
18. K to B 7 18. K to Q sq.
19. B to B 6 19. K to B 2
20. B to Kt 5 ...
Not to R 4, because at Kt 5 the Bishop guards the additional square R 6.
... 20. K to Q sq.
21. K to K 6 21. K to B sq.
22. K to Q 6 22. K to Q sq.
23. Kt to R 5 23. K to B sq.
24. B to Q 7: ch. 24. K to Kt sq.
If 24. ... K to Q sq., then 25. Kt to B 6, checkmate.
25. K to B 6 25. K to R 2
26. Kt to B 4 26. K to R 3
27. K to B 7 27. K to R 2
28. B to B 8 28. K to R sq.
29. Kt to R 5 29. K to R 2
30. Kt to B 6: ch. 30. K to R sq.
31. B to Kt 7, checkmate.