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Efim Bogoljubov vs Savielly Tartakower
Karlsbad (1923), Karlsbad CSR, rd 8, May-07
Dutch Defense: Semi-Leningrad Variation (A81)  ·  1-0

8
7
6
5
4
3
2
a
1
b
c
d
e
f
g
h
White to move.
ANALYSIS [x]
Notes by Stockfish 9 v010218 (minimum 6s/ply)better is 7...c6 8.b3 Na6 9.Ba3 Ne4 10.Nxe4 fxe4 11.Qd2 Nc7 = +0.25 (25 ply) ⩲ +0.92 (23 ply) 9.b3 Bd7 10.Bb2 c6 11.Qd2 h6 12.Rad1 Kh7 13.e3 cxd5 ⩲ +0.96 (23 ply)better is 9...Nh5 10.Nf4 Nxf4 11.Bxf4 Bd7 12.c5 Rb8 13.Qb4 h6 = +0.17 (21 ply)better is 10.Na4 Nf6 11.Nf4 Rb8 12.Nc3 Bd7 13.a4 c6 14.Be3 c5 ⩲ +0.68 (22 ply)= 0.00 (24 ply)better is 11...e5 12.Qc2 a5 13.f3 Ngf6 14.e4 f4 15.gxf4 Nh5 16.f5 = 0.00 (23 ply) ⩲ +0.60 (21 ply)better is 14.Nf4 a4 15.h3 Ne5 16.b3 axb3 17.axb3 Qe8 18.b4 Ne4 ⩲ +0.75 (22 ply)= +0.01 (19 ply) after 14...c6 15.b3 Qe8 16.f3 Ne5 17.Nf2 a4 18.f4 axb3 19.axb3 better is 17.Nf2 a4 18.f4 axb3 19.axb3 Nf7 20.Nd3 e5 21.Nxc5 dxc5 ⩲ +0.72 (23 ply)= +0.13 (20 ply)better is 21.Bxc5 bxc5 22.Re1 a4 23.e4 Bd4 24.Rfe2 fxe4 25.Rxe4 = +0.37 (23 ply)better is 21...Na6 22.Bc1 Rb8 23.e3 e5 24.dxe6 Qxe6 25.Ba3 Rbe8 = -0.19 (22 ply)better is 22.Qxc3 Ne4 23.Bxe4 fxe4 24.Bc1 Qf7 25.Qe3 Qf5 26.h3 g5 = +0.41 (22 ply)better is 22...Bg7 23.Bd4 Bxd4 24.Rxd4 Qf7 25.e4 fxe4 26.Bxe4 Rae8 = -0.10 (27 ply)better is 23.Ba3 Bg7 24.e4 Qf7 25.Re1 fxe4 26.Bxe4 Rae8 27.f5 Bxf5 ⩲ +0.52 (24 ply) 23...Bxd4 24.Rxd4 Qf7 25.e4 fxe4 26.Bxe4 Rae8 27.f5 Bxf5 = -0.14 (28 ply) ⩲ +1.20 (31 ply) 24...Qxe6 25.Bxf6 Qxf6 26.Bxa8 Rxa8 27.e3 Bc6+ 28.Kg1 ⩲ +0.92 (28 ply) ± +1.90 (27 ply) 31.Qd1 Re8 32.Rd3 Re6 33.Kg2 Kg7 34.Qd2 Kf7 35.Qb2 h5 ± +1.95 (25 ply) ⩲ +1.17 (29 ply) 32...Qc6 33.Kg1 Qc5+ 34.Kf1 Qc6 35.Qd4 Re6 36.Kf2 Kg8 ⩲ +1.12 (30 ply) ± +1.92 (27 ply) 33...Kg7 34.Rd5 Qe3 35.Rxd6 Qxe2+ 36.Qxe2 Rxe2+ 37.Kg1 ± +1.84 (26 ply) 34.Re3 Rxe3 35.Qxe3 Qa1 36.Qxb6 Qe1 37.Qb7+ Kg8 38.Qe7 +- +2.71 (27 ply)better is 34...h5 35.Kg2 Re4 36.Qd1 Re6 37.Kf2 Qc5+ 38.e3 Kg8 ± +1.51 (25 ply) ± +2.03 (25 ply)better is 37.e3 Qa3 38.Qxb6 Qa2+ 39.Kf1 Qxh2 40.Qc7+ Re7 41.Qxa5 ± +2.07 (25 ply) ⩲ +1.37 (22 ply) 39.e3 Qa3 40.Qxb6 Qa2+ 41.Kf1 Qxh2 42.Qc7+ Re7 43.Qxa5 ± +2.07 (25 ply) ⩲ +1.07 (32 ply) after 39...Qxd4 40.Rxd4 Re3 41.Rd3 Rxd3 42.exd3 g5 43.Ke2 gxf4 45...Qxd4 46.Rxd4 Kd7 47.Kf2 Kc6 48.Rd5 Re8 49.Kf3 Re4 ⩲ +1.30 (32 ply) ± +2.23 (29 ply) 49.Rb5 Qc6 50.Kf2 Kb7 51.e3 Ka6 52.Rd5 Qc7 53.c5 bxc5 ± +2.10 (26 ply) ⩲ +1.25 (26 ply)better is 51.Qd3 Qf6 52.Rd4 Re7 53.h4 Re4 54.Qd2 Rxd4 55.exd4 Qe6 ⩲ +1.44 (25 ply) ⩲ +0.92 (26 ply)better is 55...Qh7 56.Kg2 g5 57.Rxg5 Re7 58.f5 Qh6 59.Rg6 Qxe3 ⩲ +1.07 (27 ply) ± +1.69 (28 ply) 56...Re6 57.Rh3 Qg7 58.Kf3 Re7 59.Qd4 Qf7 60.Rh6 Qg8 ± +1.60 (28 ply) ± +2.41 (30 ply)74...Rxf8 75.Kxf8 +- mate-in-511-0

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

Annotations by Stockfish (Computer).      [35437 more games annotated by Stockfish]

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Kibitzer's Corner
Aug-21-07
Premium Chessgames Member
  Honza Cervenka: When black played 23...e5, he probably overlooked 28.Rxd6!

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