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Lajos Portisch vs Alexander Onischuk
Biel SKA (1996), Biel SUI, rd 2, Jul-23
Queen's Indian Defense: Spassky System (E14)  ·  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 10...Nbd7 11.Nb5 Bb8 12.Rc1 Re8 13.Nc3 Bd6 14.Nb5 Bb8 = 0.00 (26 ply) 11.dxc5 bxc5 12.Rc1 Nb4 13.Bb1 Re8 14.Nb5 Be7 15.a3 Na6 ⩲ +0.71 (23 ply)better is 11...Nb4 12.Bf5 Re8 13.a3 Nc6 14.Bd3 Ne4 15.dxc5 bxc5 = -0.07 (23 ply)better is 12.Rc1 Rac8 13.Nf4 cxd4 14.Nxd4 Nxd4 15.Bxd4 Be5 16.Rxc8 = +0.44 (21 ply)= -0.06 (23 ply)better is 14...Nxc5 15.Ne2 Ne5 16.Nxe5 Bxe5 17.Bxe5 Qxe5 18.Nd4 = 0.00 (23 ply)better is 15.Bb5 Rac8 16.Bxc6 Rxc6 17.Qxd5 Nxg3 18.hxg3 Rd8 19.Qe5 ⩲ +0.52 (22 ply)= 0.00 (22 ply) 19...f6 20.Bc4+ Kg7 21.Ng5 Rd6 22.Qc2 h6 23.Nxe4 Nb4 = 0.00 (25 ply)+- +4.40 (24 ply) 20...Qf6 21.Bxc6 exf3 22.d5 Qxc3 23.Bxc3 Bxc6 24.dxc6 +- +3.32 (23 ply)better is 21.Bc4 Rxc4 22.bxc4 Nxf3+ 23.gxf3 Qg5+ 24.Kh1 f6 25.fxe4 +- +6.35 (24 ply) ± +1.93 (22 ply) 24...Rd8 25.Nc2 Bd5 26.b4 Kh7 27.Bd4 Rb8 28.Rb1 Qf4 29.g3 ± +2.24 (21 ply)better is 25.Nb5 h3 26.g3 Rc2 27.Bd4 Bc6 28.Be3 Qe7 29.Nd4 Rc3 +- +3.61 (21 ply) 25...Qf6 26.Ba1 Bd5 27.Ne2 Qc6 28.Rc1 Qb7 29.Rxc8+ Qxc8 ± +2.36 (20 ply)+- +3.60 (22 ply) after 26.Nf3 exf3 27.Re5 Bxb3 28.Rxg5 Bxd1 29.Rb5 Rb8 30.Bd4 27.Nf3 Qf5 28.Nxh4 Qe6 29.Nf3 f6 30.Nd4 Qf7 31.Nb5 Rc2 +- +3.43 (24 ply) 27...Rd8 28.Ne2 f5 29.Be5 Qe7 30.Bd4 Qxa3 31.Bf6 Rd7 ± +1.65 (21 ply)+- +2.55 (24 ply) after 28.Ne2 Rc2 29.Bd4 Rc6 30.Bb5 Rd6 31.Bb2 Rd8 32.Nc3 Bxb3 28...Rd7 29.Rc3 Qd8 30.a4 Bb7 31.Re3 Ba8 32.Bb5 Rd6 ± +2.25 (23 ply)better is 29.Nf3 Qf5 30.Nxh4 Qe6 31.Nf3 f6 32.Nd4 Qf7 33.Nb5 Rc2 +- +3.43 (24 ply) ± +2.20 (20 ply) 30...Rd8 31.Rc3 Ra8 32.Nb5 Ra2 33.Bc1 Qh5 34.Rd2 Rxd2 ± +2.26 (21 ply)+- +3.52 (24 ply) after 31.Nb5 Bc6 32.Nd6 Ra2 33.Re2 Bd5 34.Ne8 Rxb2 35.Rxb2 Qe5 32...Ba8 33.Rd6 Qe7 34.Nb5 Qf8 35.Bf6 Re6 36.Rd8 Re8 +- +3.80 (24 ply)better is 33.Rd7 Re7 34.Rxb7 Rxb7 35.Nxe4 Qf5 36.Bd3 Qc8 37.Nf6+ +- +7.19 (29 ply)+- +3.24 (28 ply) 34.Rd6 Rxd6 35.Nxd6 Qe7 36.Nxb7 Qxb7 37.Ra3 Qd7 38.Ra8 +- +3.05 (26 ply) 34...Rd3 35.Rxd3 exd3 36.Nc3 Qd2 37.Nd1 Qe1 38.Ne3 Qxb4 ⩲ +1.10 (22 ply) ± +2.26 (25 ply) 36...Qe7 37.Na3 Rc7 38.Nc4 b5 39.Na5 Bd5 40.Rxc7 Qxc7 ± +2.22 (23 ply)+- +4.06 (27 ply)better is 38.Rxe4 Bxb5 39.Bxb5 Qc1+ 40.Be1 g5 41.Kf1 f5 42.Rc4 Qd1 +- +4.17 (24 ply) ± +2.23 (25 ply) 39.Nf7 Qe7 40.Ne5 Be6 41.Re1 Qc7 42.Rc1 g5 43.Bb5 Kh6 ± +2.17 (25 ply) 39...Qd8 40.Bb4 g5 41.Ra3 Kg6 42.Ra1 e3 43.fxe3 Qe7 ⩲ +1.40 (25 ply) ± +2.29 (29 ply); 40...Qe5 41.Rc3 Be6 42.Nb7 f4 43.Nd8 e3 44.Nxe6 Qxe6 ± +1.55 (26 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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