After this the black QN, up until the end of the game, is unable to get into play. 14 . . . N-B5 15 P-N3 N-N3 getting the knight closer to the centre held out better prospects.

'Other continuations are 14 . . . N-B5 or 14 .. . P-B4. Against 14 . .. P-B4 White replies 15 P-N3 N-B3 16 P-Q5 N-K2 17 N-R4 with advantage. I decided to lead play into the position that would have arisen from that variation.'

15 P-N3

'This move limits the field of operations of the knight on QR5. Very often White bases his play on utilizing the bad position of this knight. In the text game, the black knight retreats to the square b7, but even there it remains rather out of play. 15 N-R2 followed by P-KB4 deserves consideration.'

16 P-Q5

White blocks the centre and play is transferred to the flanks. It is clear that White will aim for a K-side offensive, while Black will go for a Q-side counter-attack. As soon be comes clear White has the better chances; in no small measure thanks to Black's passive QN.

'Black adopts an interesting plan.

He attempts first to restrict White's K-side play and then to start his Q-side counterplay. In the game Black did not completely succeed in effecting this idea. In the middle of the game he starts to change plans and suffers defeat.'

'Now and on the next moves the continuation P-KB4 and then P-B5 would have led to very sharp play.'

It is interesting that a similar position, but on move 22 and with the black queen on K2, arose in Stein-Geller, 37 USSR Ch. Stein effected the advance 22 P-KB4 and after 22 . . . P X P 23 B X KBP had the initiative. All the same Geller brought about considerable complications with a pawn sacrifice.

Karpov chooses another plan. He carries out a regrouping manoeuvre in order to make the advance P-KB4 with the greatest possible effect. Above all he reduces to a minimum Black's freedom of action on the Q-side and only then gets down to his attack.

21 P-R3

'The idea of the text move is clear - White intends, at an appropriate moment, to close the Q-side, and also to play P-QN4 to bury the black knight on b7.'

Later on the queen will go to K2, losing several tempi en route. Better 21 . . . Q-K2 at once.

In the Chigorin systems Black usually operates on the lines of . . . Q-B2, . . . P-KB3 and . . . N/QN2-Q1-B2. In the given case, Black's position has been weakened by . . . P-KR4 and the advance . . . P-B3 would make the position of the black king difficult. One gets the impression that White's plan, in conjunction with the move P-Q5, is very unpleasant for Black.

22 K-Rl

'White intends to prepare and carry out the advance P-KB4. Therefore it is useful to remove the king from the gl-a7 diagonal.'

23 RP xP RPxP

'23 BP x P BP X P 24 P-QR4 and the re-development of a knight on QB4 was possible, but at the time of the game I intended the plan with P— KB4 and I did not want to give it up. And so White succeeded in closing the Q-side, but at the same time conceded the QR-file. In the outcome it transpires that the QR-file does not give Black sufficient counterplay.'

24 P-QB4

Now Black's Qside counterplay is finished. The incursion of the rooks along the open QR file is of a purely symbolic character.

27 N-K2

'Here I intended the re-deployment of knight on Q3 and bishop on QN2 and then the move P-KB4. Black prevented the re-deployment B-QN2, but all the same the white knight occupied the Q3 square.'

The game is given in Shakhmaty v SSSR, where it was annotated by Magergut, as continuing 27 . . . Q-K2 28 R-QN1 B-KB3 29 N-Bl R7-

R6 30 N-B3 K-Rl thus rejoining the game score (followed by Karpov) given in the column.

'Black loses the thread of the game. He makes all the subsequent moves in random order. Now if Black had decided to exchange the dark-squared bishops then a better way to do this was by 27 . . . Q-KB1 and 28 ... B-R3.'

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