Viktor Korchnoi (SWI) - Garry Kasparov (USR),
Olympiad, Round 10, Lucerne, Switzerland, 1982.
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ECO A64
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Kasparov's own comments are noted wherever they have been used.
1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 c5 5.d5 d6 6.Nc3 O-O 7.Nf3 e6 8.O-O exd5 9.cxd5 a6 10.a4.
See the diagram below, which has been reached by an unusual order of moves.
The game started as a King's Indian Defense (2...g6), then transposed into a Modern Benoni (4...c5 5.d5).
A more common sequence is 2...e6 3.g3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Nf3 Bg7 8.Bg2 O-O 9.O-O a6 10.a4 reaching the same diagram.
White's last move inhibits ...b5.
10...Re8.
Black aims to contest the semiopen e-file and to control e5. Also common is 10...Nbd7, but this is often just an inversion of moves.
11.Nd2.
Prepares e4 and Nc4.
Also possible is 11.Bf4 which prevents an immediate ...Nbd7.
11...Nbd7.
This is the only way to develop the Nb8. It aims for e5, but can go to b6, c5 (after c4), f6, or f8 as required.
12.h3.
Prevents ...Ng4 and prepares shelter for the King on h2 in the event of e4 & f4.
Other moves are 12.a5 and 12.Nc4
12...Rb8.
(See the diagram on the next page.)
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