29. … Kt-K2 30. Kt-K4 Q-B2 31. Q-B6ch K-Kt1 32. B-K6
This is now compulsory. If White loses time in withdrawing the B, Black consolidates his position by: Kt-Q4 and Q-K2.
32. … PxB
R-B1 is refuted by 33. Kt-Kt5!, PxB; 34. QxR, etc.
33. QxKPch
Better than Kt-Kt5, for after Kt-Q4, 34. QxPch, the Black King finds a safe retreat at Kt2.
33. … K-B1 34. Kt-Kt5 Kt-Kt1 35. P-B4
in order to open the file for the Rook.
35. … R-K1 36. PxP R-K2 37. R-B1ch K-Kt2 38. P-R5 B-K1 39. P-R6ch K-R1
KtxP fails on account of Q-B6ch.