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Efim Geller vs Viktor Korchnoi
USSR Zonal (1964), Moscow URS, rd 2, Feb-19
Queen's Gambit Accepted: Classical Defense. Rubinstein Variation (D27)  ·  0-1

8
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White to move.
ANALYSIS [x]
Notes by Stockfish 9 v010218 (minimum 6s/ply) 11...O-O 12.Bb3 Na5 13.Ba2 Nc6 14.Bb1 Qc7 15.Qc2 g6 = +0.02 (23 ply) ⩲ +0.79 (22 ply)better is 13.Qg4 Kh8 14.Bd3 Qe8 15.Bb1 f5 16.Qh3 Bd7 17.Nxd5 Nxd5 ⩲ +0.64 (23 ply)better is 13...Qc7 14.h3 Rb8 15.Bb3 Nc6 16.Nc3 Nxc3 17.bxc3 Nxe5 = +0.06 (21 ply) ⩲ +0.59 (20 ply) after 14.Bb3 N6d5 15.Ng3 Bd6 16.Qh5 f6 17.Nc4 Bxg3 18.fxg3 Bd7 better is 14...Nxc4 15.Nxc4 Bd7 16.Rg3 Bxa4 17.b3 Bc6 18.Bh6 g6 = +0.35 (20 ply) ⩲ +1.07 (22 ply) 16...Nc6 17.Rad3 Nxa5 18.Nxa5 Qxa5 19.d5 exd5 20.Nc3 Bc5 = -0.22 (24 ply) 17.Rg3 Rf7 18.Bd2 Qf8 19.Nc3 Bd7 20.Nxd5 exd5 21.Nb6 Bd6 ⩲ +0.82 (21 ply)= 0.00 (25 ply) 22.Qxe8 Qc2 23.Ne3 Qxd1+ 24.Nxd1 Rxe8 25.Be3 Rb8 26.Nc3 = +0.38 (27 ply) ⩱ -1.45 (24 ply) 27.Rxb7 Bxd1 28.Qxd1 Rf7 29.Qf3 Qc8 30.g4 Qe6 31.Kg2 Rd8 ⩱ -1.13 (25 ply)-+ -3.67 (27 ply) 34.gxf4 Bxf4 35.Bxf4 Rxf4 36.Qe3 Qg4+ 37.Qg3 Qxg3+ -+ -4.90 (28 ply)-+ -12.92 (23 ply)36.Qxf7+ Kxf7 37.Bxf4 Qxd5 38.Rc7+ Re7 39.Rxe7+ Kxe7 -+ -8.95 (30 ply)0-1

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
FEN COPIED

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Given 21 times; par: 37 [what's this?]

Annotations by Stockfish (Computer).      [35436 more games annotated by Stockfish]

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Kibitzer's Corner
Dec-01-10  M.D. Wilson: Korchnoi outplaying Geller tactically, again.
Dec-22-11  King Death: The position after 21...Bd6 is very complicated. Geller couldn't play 22.Nc7 Re2 23.Rb7 because his knight is lost after 23...Bc8 24.Ra7 Re7, but maybe 23.Rc3 Bb4 24.Re3 was a try even though this endgame looks good for Black.

The other idea was instead 22.Qe8 Qc2 and then: 23.Qh5 Qb3 or 23.Ne3 Qd1+ 24.Nd1 Re8 24.Ne3 look fine for White, at least better than what happened in the game.

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