Judiciously giving up the exchange and Pawn to escape the fatal attack threatened on Rook's file.
33 P takes R R to B square 34 R to R2 R to B3 35 Q to K8 ch K to R2 36 P to KB4 Kts P takes P 37 R (on R2!) to R square
The other R to R square, doubling, seems much stronger. If then R x P, 38 Q to Kt6 ch! From this point White plays a weak game.
37 R takes P 38 Q to Kt6 ch Q takes Q 39 P takes Q ch K takes P 40 P to QKt4 P to K5 41 R (Q sq) to Kt sq ch R interposes 42 K to Q2 Kt to Q square 43 R takes R ch P takes R 44 R to R8
After this it is only a matter of time. The Pawns cannot be stopped.
44 Kt to B2 45 R to Kt8 ch K to R2 46 R to K8 P to K6 ch 47 K to K2 K to Kt3 48 R to K6 ch K to B4 49 R to K7 Kt to K4 50 R to K8 P to Kt5 51 R to B8 ch
Driving him where he wants to go!
51 K to K5 52 R to B6 P to B6 ch 53 K to Q sq P to Kt6 54 R to B8 P to Kt7 55 R to Kt8 P to B7 Resigns.
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