Ii

The first controversial moment. Black wants, by means of. . . P-R5 and . . . B-R3, to rid himself of his bad pieces - the QRP and the light-squared bishop.

12 P-QR4 does not achieve anything for White after 12 . . . B-R3, but 12 P-B4 also suffers from weakening the QN4 square.

12 Q-K2 deserved consideration -a more natural place for the queen than the one I chose. 12 ... 0-0 36

Karpov made this move after long thought. Here 12 . . . P-R5 is no longer so good: White replies 13 R-Bl or 13 Q-B2 and the evacuation of the black king is again delayed.

In castling Black was obliged to look at the consequences of the sacrifice 13 P-K5 N-Q2 (on . . . K1 the knight is not doing anything) 14 BxP+ KxB 15 Q-R5+ K-Nl 16 R-B3 P-KB4 17 R-R3. After 17 ... R-Ql White has a draw but no more. I was attracted by a different plan of attack

Here this is better than the traditional Sicilian reaction . . . P-N3.

15 BPxP was threatened.

I thought for a long time about the position after the exchange sacrifice and it seemed to me very terrible (in the sense of awe-inspiring - eds); in reality it was not so simple. Quieter and better was 15 N-B3. 15 ... N-N5 10 (342)

16 KP xP 20

Now 16 N-B3 will no longer do because of 16 . . . B-B4. 16 . . . BPxP 2 17 PxP 2 N-B7+ 1 18 RxN QxR 19 R-K2 3

After 19 R-KB1 Q-B4 White has no compensation for the exchange because 20 N-B4 PxP 21 B-R3 Q-B2 does not work - the bishop on . . . K2 is defended.

19 ... Q-B4 is bad: 20 N-B4 (also possible is20PxPQxQ21PxP + with sufficient compensation) 20 . . . PxP 21 B-R3 PxN 22 B-R7 + ! K-Rl 23 BxQ.

The queen cannot go to ... B7 because after 21 B-Q4 she is trapped, but 20 . . . Q-N4 was possible. White can then draw with 21 R-K5 Q-B5 (21... P-B4 is too dangerous) 22 R-K4, but it is not so easy to find more, if indeed it is possible. However, the text move is better.

21 N-B4 11 Qx QP 22 R-N41 6 Immediately regaining the exchange does not work: 22 N-N6 Q-N2 23 Q-B3 P-K4! (also possible is 23 . . . P-B3, but not 23 . . . B-B3?? 24 QxB±±) 24 NxR Q X N and Black has an extra pawn.

22 ... P-K4 3 23 R-N3 R-R3 1 Here Black has a wide choice of moves. As well as the game continuation the moves 23 . . . Q-K3,

Here my opponent thought for a long time, and it seemed to me that in playing 23 . . . R-R3 Karpov had overlooked, in the variation 24 NxP R-K3 25 B-B4 RxN, the move 26 R x P+!± ±.

Against 24 . . . R-KB3 25 N-B6! is possible. 25 N-B6! is a solid threat anyway, therefore the text move is practically forced. The position is most interesting - if you add the fact that I had ten minutes left and Karpov, twenty, then the drama of the following struggle increases.

24 ... B-B3 12 25 B-B4 4 Q. Q3 4 26NxP!RxN 1 27BxB 1

Or 27 ... QxB 28 BxR/7 + QxB (28 . . . KxB 29 R-KB3) 29 QxB+.

30 PxB White is not risking anything.

If 29 . . . R-Bl there follows the stunning blow 30RxR+KxR31 BxP+" The bishop is immune:

31 . . . QxB/2 32 Q-B2+ and 33 BxR or 31 . . . KxB 32 Q-N2 + and 33 B xR. There remains 31 . . . K-Nl but then 32 B-N2 and White has two pawns for the exchange which, together with the position of the black king, gives White at least equal chances.

30 BxQ 1 BxB 4 31 P-KR31

If 31 QxB then 31 . . . R-QB3! -it is impossible to defend against the two mate threats on KB1 and QBI and the endgame after 32 Q xR/7 + is lost for White.

Now there remained not more than a minute on my clock, and on my opponent's, about five.

The smoke of battle has cleared somewhat and it has become clear that the chances are on the side of Black, to whom the presence of opposite coloured bishops gives good attacking chances.

In this position best of all was 31 . . . B-Q4 and both 32 Q-Q3 R-Q3! and 32 Q-QB5 B-N2 are bad. 32 K-R2 should be played and a similar position is obtained to that which arises after several moves in the game.

32 Q-K4! P-R5 33 PxP R-Q3 34 B-R5 R3-KB3 1 35 B K1 B-R3 36 K-R2 B N2 1 37 Q-QB4 R-B3 38 Q-N3 R-KN3 39 B-N3 R-N4 1

Here the game was adjourned and I sealed ... 41 Q-B8 +

On analysis it was clear that Black's advantage was not sufficient to play for a win. The passed QRP gives sufficient counterchances.

41 . . . R-Bl 42 Q-B2 P-R4 43 P-R5! 4-4 2.55 - 3.00

The ending after 43 . . . P-R5 44 BxP RxP+ 45 QxR BxQ 46 K xB cannot be won.

2913 AK-Lev Polugayevsky:

R13: 20 October:

Slav

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