1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 d5 5.a3 Bxc3+ 6.bxc3 c5 7.cxd5 exd5 8.Bd3 O-O 9.Ne2 b6 10.O-O Ba6 11.Bxa6 Nxa6
12.Bb2 Qd7 13.a4 Rfe8 14.Qd3 c4 15.Qc2 Nb8 16.Rae1 Nc6 17.Ng3 Na5 18.f3 Nb3 19.e4 Qxa4 20.e5 Nd7 21.Qf2 g6 22.f4 f5 23.exf6
Nxf6 24.f5 Rxe1 25.Rxe1 Re8 26.Re6 Rxe6 27.fxe6 Kg7 28.Qf4 Qe8 29.Qe5 Qe7 30.Ba3 Qxa3 31.Nh5+ gxh5 32.Qg5+ Kf8 33.Qxf6+ Kg8
34.e7 Qc1+ 35.Kf2 Qc2+ 36.Kg3 Qd3+ 37.Kh4 Qe4+ 38.Kxh5 Qe2+ 39.Kh4 Qe4+ 40.g4 Qe1+ 41.Kh5 1-0
Section I:
A chessgames.com member with user name Al2009 has suggested the following improvement: 21.Ng3-f5. Presented is
analysis using Rybka3
21...a5 22.f4 Nf8 23.Re3 Nc5 24.Qxa4 Nxa4 25.Ba3 b5 26.Ne7+ Rxe7 27.Bxe7 Ra7 28.Ba3 Rb7 29.f5 b4 30.cxb4 axb4 31.e6 fxe6
32.fxe6 Nxe6 33.Rxe6 h6 34.Ra6 Nc3 35.Bb2 Ne4 36.Ra8+ Kh7
� (0.93) Depth: 26 312:34:08
2117200kN, tb=9
on 21...g6 22.Ne3 there is:
[+1.00] d=24 22...Qc6 23.f4 f6 24.g3 b5 25.Qg2 Kg7 26.Qxd5 Rac8 27.Ba3 a5 28.Rf2 Qxd5 29.Nxd5 Rc6 30.exf6
Nxf6 31.Rxe8 Nxe8 32.Re2 Rc8 33.Re7 Kh8 34.Rd7 Ra8 35.Kf2 Rb8 (105:52.09) 14032607kN
[+1.34] d=24 22...Kh8 23.f4 f5 24.Nxd5 Qc6 25.Ne3 b5 26.h4 Nb6 27.h5 Nd5 28.Rf3 Rad8 29.hxg6 Qxg6 30.Qxf5
Nd2 31.Rf2 Ne4 32.Qxg6 hxg6 33.Rc2 Nxf4 34.Nxc4 Ng3 35.Na5 Kg8 36.Nc6 Rd7 37.Bc1 Nd5 (175:24.58) 22201103kN
after
21...g6 22.Ne3 Qc6 23.f4 f6 there is
[+1.05] d=21 24.g4 b5 25.Qg2 Nb6 (15:15.03) 1999388kN
[+0.86] d=21 24.g3 b5 25.Qg2 Kg7 26.Ba3 a5 27.Qxd5 Ra6 28.Rf2 Qxd5 29.Nxd5 Rc6 30.Kg2 Kf7 31.Ne3
Rc7 (35:49.22) 6433038kN
after
21...g6 22.Nd6 (Al2009's move) there is
22...Re6 23.Qf2 Nf6 24.Qh4 Qd7 25.Nxc4 Ne8 26.Ne3 Nd2 27.Rf2 Nc4 28.Nxc4 dxc4 29.Rd2 roughly +0.53/24 and with problems
for black.
- congratulations to chessgames member Al2009 for discovering this.
Section II:
After 21.Qf2 there is, after eliminating 21...g6 from consideration:
[+0.82] d=25 21...Qc6 22.Nf5 Qe6 23.Nd6 f5 24.g4 f4 25.Nxe8 Rxe8 26.Bc1 Rf8 27.Qh4 b5 28.Ba3 Re8 29.Qg5 Nb8
30.Qxf4 Nc6 31.Re2 a5 32.Bb2 b4 33.Qe3 a4 34.cxb4 Nxb4 35.Bc3 Nd3 36.Ra2 Qd7 (15:45.25) 11423569kN
[+0.54] d=21 21...b5 22.Nf5 Qa6 23.f4 Rad8
[+0.68] d=21 21...a5 22.f4 Qc6 23.Nf5 Nf8 10:24:49 1783441kN
Section III:
The whole Nb8-c6-a5-b3 Qxa4 concept seems misguided and allows white to build counterplay in the center and on
the kingside. Black needs to try another plan:
After 15.Qc2:
Analysis by Rybka 3 : <23-ply>
1. = (-0.07): 15...Nh5 16.Bc1 g6 17.Qb1 Rad8 18.Re1 Nc7 19.Qb2 Ne6 20.Qb5 f5 21.Qb1 Nf6 22.f3 Nc7 23.Qc2
2. = (-0.05): 15...Rad8 16.Nf4 h6 17.Ba3 Rc8 18.Ne2 Nh5 19.a5 bxa5 20.Bc1 Qd8 21.Qa4 Nf6 22.Qxa5 Nc7 23.Qa4 Rb8 24.f3
Nb5
Section IV:
After the possible improvement 25...Rf8 there is:
26.Qf4 Ne4 [26...Qd7 27.Ba3 Re8 28.Rf1 +-]
27.Qe5 and there appears to be no way for black to draw:
Analysis by Rybka3:
I 27...Qd7
28.fxg6 hxg6 [28...Nxg3 29.hxg3 +-]
29.Nxe4 dxe4
30.Ba3 and now:
A. [+1.79] d=25 30...Rf7 31.Qxe4 Qf5 32.Qh4 Qh5 33.Re8 [Qd8 +1.80/21]
Kh7 34.Qe1 Qf5 35.h4 Qf4 36.Be7 Nc1 37.Bg5 Nd3 38.Bxf4 Nxe1 39.d5 Nd3 40.Be3 g5 41.Bxg5 Kg6 42.d6 Rd7 43.Rd8 Rxd8 44.Bxd8
(21:57.13) 21752283kN
B. 30...Re8 31.Qg5 Qf5 32.Qe3 scores +1.99/20 32...Qh5 33.Rf1
Qh4 34.h3; +2.16/20 32...Qa5 33.Bd6 Qd5 34.Be5
II 27...Qc6 28.fxg6 hxg6 29.Nxe4 dxe4 30.Ba3 Rf5 31.Qb8+
Kg7 32.Bd6! Na5 and now perhaps 33.h3 and white should win
