Or Q-Kt3; 19. Kt-Q6ch, K-K2; 20. Kt-B5ch, followed by Q-Q6.
19. Kt-Q6ch K-B1 20. RxP Kt-Kt3
The threat was: 21. Q-Q5, Kt-R3; 22. KtxB, RxKt; 23. R-Q6, etc. 20. … Kt(Q2)-B3 is of no avail because of 21. Q-Kt3, Kt-R3; 22. KtxP, or 21. … Q-Q2; 22. KR-B1, etc.
21. B-R4 Q-Q2 22. KtxB! QxR
Not RxKt because of 23. QxQ. Now Black is a whole Rook ahead. But it is as much out of play as his Queen’s side pieces. The King is driven into a mating net by the concentration of superior White forces, and only escapes by giving up the extra piece.
23. Q-Q8ch Q-K1 24. B-K7ch K-B2 25. Kt-Q6ch K-Kt3 26. Kt-R4ch K-R4
If K-R3 there follows mate in three by 27. Kt(Q6)-B5ch; 28. Kt- Kt3ch; 29. B-Kt5 mate.
27. KtxQ RxQ
28. KtxPch K-R3
29. Kt(Kt7)-B5ch K-R4
30. P-KR3!
This threatens 31. PxKtch, KxP; 32. P-B3ch, followed by P-Kt3 or Kt4 mate. If Black plays 30. QR-KKt1, White wins as follows: 31. PxKtch, RxP; 32. P-B3, Kt-B1ch; 33. K-R2, KtxB; 34. PxRch, KxP; 35. KtxKt, K x Kt; 36. R-B7. If 30. … Kt-R3; 31. Kt-Kt7 mate.
30. … Kt-B1 31. PxKtch KxP 32. BxR RxB 33. P-Kt3 R-Q7 34. K-Kt2 R-K7 35. P-R4 Kt-Kt3 36. Kt-K3ch K-R4 37. P-R5 Kt-Q2 38. Kt(R4)-B5 Kt-B3 39. P-Kt5 B-Q5 40. K-B3 R-R7 41. P-R6 B-R2 42. R-B1 R-Kt7 43. P-Kt4ch K-Kt4 44. R-B7 RxPch 45. KxR KtxKtPch 46. K-B3 Resigns.