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Efim Bogoljubov vs Aron Nimzowitsch
Karlsbad (1923), Karlsbad CSR, rd 5, May-04
Queen's Indian Defense: Classical. Traditional Variation Nimzowitsch Line (E18)  ·  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) 9...Nxd5 10.Nxd5 exd5 11.Nd3 c6 12.Bd2 Re8 13.Rc1 a5 = -0.07 (25 ply) ⩲ +0.83 (32 ply) 10...Nc6 11.dxe7 Qxe7 12.e4 Na5 13.Re1 h6 14.Bf4 Rad8 = +0.43 (34 ply) ⩲ +1.30 (28 ply)better is 15.e4 Rfd8 16.Be3 e5 17.Qa6 Qe7 18.Qc4 Qe6 19.Qa4 Qd7 ⩲ +1.48 (22 ply)better is 15...e5 16.Qh3 Qg6 17.Qd7 Rfd8 18.Qe7 Qc2 19.Rb1 Qf5 ⩲ +0.85 (24 ply) ⩲ +1.47 (22 ply) after 16.Qc1 h6 17.a4 c5 18.a5 Rac8 19.Ne4 Qg6 20.Qc4 b5 21.Qc2 better is 18...f5 19.f3 Rab8 20.Kf2 e5 21.Rc1 Rd6 22.f4 e4 23.b4 ⩲ +1.09 (23 ply)better is 19.b4 Kg8 20.f3 Rab8 21.Kf2 Rb7 22.Rc1 a5 23.Rb1 axb4 ± +1.73 (23 ply)better is 19...c5 20.a5 Ke7 21.f3 h6 22.Kf2 g5 23.Ne4 f5 24.Nxg5 ⩲ +1.10 (22 ply)better is 20.b4 Ke8 21.Kg2 Kd7 22.Rc1 h5 23.a5 Rab8 24.Ne4 Kc7 ± +1.67 (21 ply)better is 20...c5 21.a5 e5 22.f3 Kf7 23.Kf2 Rab8 24.axb6 axb6 25.b4 ⩲ +1.01 (22 ply) ± +1.62 (20 ply)better is 23...Rab8 24.g4 a5 25.b5 c5 26.Ne4 Rd7 27.h4 Re8 28.Nd2 ⩲ +1.09 (20 ply) ± +1.61 (20 ply) after 24.f3 e5 25.Kb3 Rd8 26.Rc1 h5 27.a5 Rab8 28.Ra1 Kb7 better is 25...Rb7 26.f3 Re8 27.h5 a5 28.bxa5 bxa5 29.Rxb7+ Kxb7 ± +1.60 (21 ply) ± +2.22 (30 ply)better is 28.Bd2 Rd8 29.e4 Kc8 30.Nd5 Rd6 31.Kc3 Ra7 32.Kc4 Re6 ± +2.27 (27 ply) ± +1.74 (30 ply)better is 29.h5 Rd7 30.Ne4 Rad8 31.f3 Kb7 32.Bd2 Rd5 33.Bc3 Kc7 ± +1.83 (37 ply) ⩲ +1.26 (33 ply) 30.h5 Rh8 31.Ne4 Rhd8 32.f3 Rf8 33.Bd2 Kb7 34.Ng3 Rfd8 ± +2.15 (30 ply) ⩲ +1.30 (24 ply) after 30...Rb8 31.h5 Re8 32.Rg1 Red8 33.f3 Rd5 34.Rh1 R5d7 better is 32.h5 Rhd8 33.Ne4 Kc7 34.Ng3 Kb7 35.Nf5 Kc7 36.Rg1 Kb7 ± +1.87 (39 ply) 32...Rd5 33.h5 Rhd8 34.f3 Kc7 35.Rf1 Kb7 36.Ra1 Kc7 ⩲ +1.25 (35 ply) 33.g5 Rg8 34.Kc3 h5 35.Rg1 Rdd8 36.Rg3 f5 37.Nxe5 Rge8 ± +2.43 (25 ply) 33...Rh8 34.Rg1 Rhd8 35.Rg3 Rd1 36.g5 hxg5 37.hxg5 Rb1+ ± +1.57 (26 ply) 34.g5 hxg5 35.hxg5 Rh8 36.Rg1 f5 37.Nxe5 Rh3 38.f3 Rh4 ± +2.37 (26 ply) 34...Rh8 35.h5 Rd5 36.Be3 Rhd8 37.Kc2 Kc7 38.f3 Rh8 ⩲ +1.40 (27 ply)+- +2.56 (27 ply) after 35.g5 hxg5 36.hxg5 fxg5 37.Rh5 Re6 38.Bc3 e4 39.Ne5 Kb7 better is 37.h5 Rd7 38.e4 Rfd8 39.Ne3 Rd3 40.Rd1 Rxd1 41.Nxd1 Rg8 ± +2.27 (31 ply) ± +1.73 (37 ply) 39...Rfd8 40.Rg3 Kc8 41.h5 Kc7 42.e4 Kb7 43.Kb3 Kc8 ± +1.63 (26 ply) ± +2.47 (27 ply) 41...Kc8 42.Nd5 Kb7 43.h5 Re8 44.Rh1 Ka7 45.Kb3 Rd6 ± +2.05 (27 ply)+- +3.24 (25 ply) 44...exf4 45.Nxf4+ Kf7 46.Rd6 Rhb8 47.Kd3 Re8 48.Rc6 +- +2.96 (25 ply)better is 45.f5+ Kf7 46.Ne3 Rc8 47.Nc4 Rcb8 48.Rd6 Kg8 49.Re6 h5 +- +5.27 (25 ply) ± +2.42 (26 ply)better is 48.Nd5 c4+ 49.Kxc4 Rxe4+ 50.Kb3 Rxg4 51.Nxb6 Rxh4 52.Nc4 +- +3.32 (24 ply) ± +2.35 (29 ply) 53...e3 54.Re1 Rbe7 55.Rxe3 g6 56.Kb3 g5 57.Kc4 Rd6 ± +1.83 (24 ply)+- +2.76 (27 ply) 58.Rb8 Re8 59.Ne5+ Kf8 60.Ng6+ Kf7 61.Rb7+ Ke6 62.Kc4 e3 +- +2.99 (24 ply) ⩲ +0.66 (25 ply)better is 62.g5 Rxe5 63.Bxe5 e2 64.Bc3 Rf3 65.Kc2 Rxc3+ 66.Kd2 ⩲ +0.80 (25 ply)= +0.19 (25 ply) 65...Rg2 66.Be1 Rd6 67.g5 hxg5 68.Nc4 Rh6 69.Kc3 g4 = +0.08 (25 ply)better is 66.Be1 Rf4 67.Bg3 Rb4+ 68.Ka3 Kc8 69.Be1 Rf4 70.Bd2 Rf2 ⩲ +0.93 (26 ply)= +0.21 (26 ply)better is 76.Rd2 Rh4+ 77.Kb3 Kf5 78.Rf2+ Rf4 79.Rh2 Re6 80.Rh5+ ⩲ +0.82 (28 ply) 76...Rh4+ 77.Kb3 Kd5 78.Rd7+ Ke4 79.Nc4 Re6 80.Rd1 Kf5 = +0.12 (27 ply)+- +3.50 (43 ply)87...Kf5 88.Rxh2 Rxh2 89.b8=Q Rh1 90.Kxa5 Rc1 91.Kb6 +- +132.77 (42 ply)1-0

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

Annotations by Stockfish (Computer).      [35434 more games annotated by Stockfish]

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Kibitzer's Corner
Aug-02-06  paladin at large: A messy ending - would it have been better for white, generally speaking, to have opposed rooks with 29. Rd1, exchanging them off?
Feb-20-07  Marmot PFL: In general exchanges probably help black to draw. I just played a 15 min. game online that was the same for 14 moves. I didn't trade queens either until I managed to weaken black's queenside which made the win easier. Of course my opponent wasn't Nimzovich.

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