Rk Pqb Pn Bn

There is a time when it is more important to make sure that the opponent cannot do something than do something ourselves. This move thwarts, for the moment, Black's . . . N-B4.

This attacking gesture is easily countered. On the other hand, Black is worried that the well-placed white minor pieces do not allow Black much counterplay. At this moment

24 . . . P-KR4 would have been a cold-blooded waiting game.

This type of build-up is more uncomfortable for Black than one with B-N4,

This not only hinders . . . N-N5, but also threatens the black rook with P-KN4.

28 . .. N-B3 29 P-B5 K-K2 30 P-KN4! R-K4 31 PxP+ PxP 32 N-N6 With the double threats N-B8+ and N-B4. 32 . . . B-Bl 33 B-B4 R-K3 34 R-Bl!

The black army has retreated, the Q-side pawn formation is catastro-phically weak and material disadvantage can no longer be avoided, e.g. 34 .. . N-K4 35 B-N5+ (35 R-B7+ K-B3) 35 ... P-B3 36 N-Q5 + K-B2 37 R-B7+ is decisive. This motif recurs in other variations as well. The ensuing pawn sacrifice is therefore a positional necessity. 34 . . . P-Q4 35 NxP+ K-Q2 36 N-B71 R-K5 37 B-N3 P-B4

Another compulsory sacrifice because after 37 . . . P-QR4 38 N-Q5 not only does 39 N-B6+ win the exchange but 39 N-N6+ is threatened with annihilation as well. These two threats can only be parried by the hopelessly passive . . . R-K3. 38 PxP PxP 39 NxP P-B5 40 B-R4 R-K4 41 R-B41 R-KB4

On 41 . . . R-QR4 42 RxP followed by 43 B-N3 would save the knight, but the three pawns would quickly decide the issue. 42 P-N41K-Q3 (93)

It looks as if the position has eased slightly for Black, as apparently

. . . K-Q4 is threatened. But oh no, the following clever move thwarts this last hope.

43 P-N5! R xP 44 R xP B-N2 45 R-B7 B-K4 46 R xP R-R4 47 N-N4! The bone-crusher 47 .. . NxN

48 B-K7+ K-K3 49 B xN R xP 50 B-B5 B-B5 51 K-N2 R-B7 52 B-N6 R-N7 53 B-Q8 B-K4 54 B-R4

1-0 The game was adjourned here, but next day Black resigned without resuming play.

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