RR

SF: White no longer needs the KR-file.

48 RxP R1-KR1

49 R-QN1

AK: Black lacks the strength to defend all his weak points, and the game ends very quickly.

49 ... R-QN1? AK: An error which does not change matters. All the same, 49 . . . P-B3 was more tenacious.

50 Q K1 RxB

AK: On 50 . . . R5-R1 there would follow 51 Q-R5+ K-Bl

SF: A game characteristic of Karpov's style.

2409 Lajos Portisch-AK:

R9: 30 November: Nimzo-Indian

1 P-Q4 N-KB3 2 P-QB4 P-K3 3 N-QB3 B-N5 4 P-K3 P-B4 5 B-Q3 0-0 6 N-B3 P-Q4 7 0-0 QPxP 8 BxBP QN-Q2 9 Q.-K2 P xP Both 9 . . . P-QR3 and 9 . . . P-QN3 are better. 10 PxP P-QN3?! New, but no improvement on 10 . . . N-N3 11 B-N3 B-Q2 12 B-N5 B-B3 13 N-K5 B-K2 14 QR-Q1 N/N3-Q4 15 KR-K1 Panno-Bolbochan, Buenos Aires 1965. Now White solves any problem concerning his IQP. II P-Q5 BxN 12 PxP B-N5 13 PxN QxP 14 P-QR3I Freeing the K1 square for use and forcing the bishop to a less active square. 14 N-K5 would allow 14 . . . Q-B4! = 14 ... B-Q3 15 R-Ql? Better 15 B-KN5!± e.g. 15 . . . Q-K2 16 QxQ BxQ 17 KR-K1 and Black is in trouble.

David Levy, in his report on the tournament for Chess, relates the reason for Portisch not playing the above line: '. . . but after 17 . . . B-Q3 he had a position in his mind in which his bishop was on QB1 and so the move 18 QR-Q1 was "impossible". Had he realized that his rooks were already united in that variation, he would have played it and got a very good game.'

15 ... Q-B2! 16 P-R3 16 B-KN5 is now too late: 16 . . . B-KN5! 17 BxN PxB 18 R-Q4 B-R4! 16 ... B-N2= 17 B-K3 QR-K1 18 QR-B1 Q.-N1 19 B-QN5 R-K2PI 19 . . . R-Bl is safer and more correct. 20 B-B6 BxB If 20 . . . B-B4 then White gets the advantage with 21 N-Q4! B xN 22 R xB R-Bl 23 R4^QB4 B-R3 24 B-QN5!± 21 RxB B-B4 22 RxNI? If 22 N-Q4?! Q-K4! leaves White with problems. 22 . . . PxR Black's position would be tenable after 22 ... B x B 23 R6-Q6 B-N4 24 Q-Q3 B-B3 25 P-QN4. 23 N-Q4 B x N 24 RxB Q.-K4 25 Q.-B3 (274) Compare this position with that after White's 42nd move in game 2103 25 . . • K-Rl?? 25 . . . P-B4! 26 R-Q5 QxP 27 B-Q4 Q-B8+ 28 K-R2 R-K3 29 RxP R-N3 30

P-KR4 and White's control of the dark squares and Black's K-side weaknesses are probably adequate compensation for the exchange. 26 R-Q5 1-0 If 26 ... Q-K3 27 B-Q4.

2410 AK-Kenneth Smith:

RIO: 1 December:

Sicilian

1 P-K4 P-QB4 2 N-KB3 P-Q3 3 P-Q4 PxP 4 NxP N-KB3 5 N-QB3 P-K3 6 P-KN4 P-KR3 7 P-N5 PxP 8 BxP P-QR3 An interesting possibility here is 8 . . . N-B3 9 Q-Q2 Q-N3!? 9 Q-Q2 B-Q2 10 0-0-0 N-B3 11 P-KR4 Q-B2 12 B-K2 12 B-R3 is also good. 12 . . . 0-0-0 13 P-B4± B-K2 14 P-R5 K-Nl 15 K-Nl B-Kl 16 B-B3 N-R41? 17 Q-K2 N-B5 18 KR-K1 R-QB1 19 R-Q3 N-Nl 20 Q-N2 B-B1?1 21 R-Rl N-K2 22 P-N3 N-R6 + !? This leads to a serious weakening of Black's Q-side which would be avoided with 22 . . . N-R4 or 22 . . . N-QN3. 23 K-N2 N-N4 24 N3xN PxN 25 Q-Q2 Q-N3 26 B-R4 P-N5 27 B-B2 Q.-R4 28 B-Kl P-K4 29 N-K2 N-B3 30 P-B5! P-B3 31 R-Q5 Q-R6 + 32 K-Nl B-B2 33 R-Q3 P-QN3?! Further weakening of the Q-side is involved by this. 34 B-B2 K-N2 35 P-B3 PxP 36 RxBP B-K2 37 R-Nl KR-N1 38 Q-N2

QxQ+ 39 KxQ N-R2 40 RxR NxR 41 N-B3 B-Ql 42 B-K2 N-K2 43 B-B4! BxB 44 PxB±

44 . . .R-Rl 45 R-KR1 K-B3 46 K-N3 R-R2 47 B-K3 R-Rl 48 K-N4 R-R2? Better 48 . . . K-N2 with 49 . . . N-B3 to follow, after which White's king can always be repulsed by . . . N-R2+. 49 N-Q5 NxN? Tantamount to resignation. 49 . . . N-Bl was the only move. Now White's king is free to advance further, blockading the QNP and thus completely incarcerating Black's bishop. 50 BPxN+ K-N2 51 K-N5 B-B2 52 P-R4 R-Rl 53 B-Q2 R-R2 54 B-N4 R-Rl 55 R-KN1 R-R2 56 R-N6! The start of the final winning idea. 56 . . • B-Nl 57 P-R6! PxP 58 RxBP P-R4 59BxPBxB60RxB P-R5 61 RxP+ K-R2 62 R-N6 P-R6 63 R-Nl R-R5 64 R-N7+ K-Rl 65 P-B6 R-B5 66 P-B7 P-R7 67 R-R7 RxBP 68 RxP R-B5 69 P-Q6 RxP 70 R-R8+ 1-0

2411 Larry Evans-AK:

Rll: 3 December:

English

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