30. P-Kt3 B-K2 31. B-B2 B-Q3 32. R-B1 K-R2 33. R-K1 R-Kt3 34. R-B1 B-R6 35. R-K1 Q-Kt7 36. Q-K2 R-Kt5 37. R-Kt1 R-Kt3
Otherwise White might embark upon a counter attack, beginning with P-Kt4. Now this is impossible on account of R-Kt3.
38. R-K1 Q-Kt4 39. Q-R5
After the exchange of Queens, Black would win easily by R-Kt7. 39. B-R2 also fails on account of QxQ; 40. RxQ, R-Kt7; 41. B-Kt3, B-Q6!; 42. R-K5, BxP, and the passed pawn costs a Rook. With the text move, White provokes the sacrifice of the Queen at Kt 8, apparently not seeing the fine continuation at Black’s disposal on the forty-first move.
39. … QxB! 40. RxQ RxR 41. P-Kt4
Compulsory. B-Kt1 would be followed by R-QB8, etc.
41. … B-B8!! Resigns.
There might follow 42. K-Kt3, P-Kt3; 43. Q-R4, BxPch; 44. KxB, P- Kt4ch, and so on. 4l. … B-Q3 would have given White a little respite, though his game would still have been hopeless after PxP and R-K8.
GAME No. 15
White: Aljechin. Black: Niemzowitsch.