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Jose Fernando Cubas vs Wesley So
Khanty-Mansiysk Olympiad (2010), Khanty-Mansiysk RUS, rd 4, Sep-24
French Defense: Advance. Lputian Variation (C02)  ·  1/2-1/2

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Oct-19-10  SugarDom: Jose Fernando Cubas (2463) - Wesley So (2668) [C02]
Chess Olympiad Khanty-Mansiysk RUS (4), 24.09.2010
[Houdini 1.03a x64 8_CPU (6m)]

C02: French: Advance Variation
1.e4 e6
2.d4 d5
3.e5 c5
4.c3 Qb6
5.Nf3 Nc6
6.a3 Nh6
7.b4 cxd4
8.cxd4 Nf5
9.Be3 f6
10.exf6 gxf6
11.Bd3 Nxe3
12.fxe3 Bh6
13.Qe2 Bd7
14.00 00 [14...Rc8 15.Nbd2 00 16.Nb3 Nd8 17.Nc5 Qd6 18.e4 b6 19.e5 fxe5 20.Nxd7 Qxd7 21.Nxe5 Qg7 22.g3 Rxf1+ 23.Rxf1 Rc1 Salgado Lopez,O (2216)-Adrian,C (2292)/Sanxenxo 2009/CBM 131 Extra]

15.Nc3 Ne7
16.Rae1N <0.21> [16.Kh1 Rac8 17.Nd1 Bg7 (17...Ng6 18.Nf2 e5 19.dxe5 Qxe3 20.Qa2 Be6 21.Rae1 Qb6 22.Bxg6 hxg6 23.Nh4 Kh7 24.Qb1 f5 25.Nd3 Rc4 26.Nf3 d4 27.Nc5 Qc6 28.Qd3 Rd8 29.h4 b6 30.Nxe6 Qxe6 31.Rd1 b5 32.Qe2 Webb,L (2339)-Buckley,S (2314)/West Bromwich 2004/CBM 102 ext/ (43)) 18.Nf2 e5 19.dxe5 fxe5 20.e4 d4 21.Rac1 Ng6 22.Rxc8 Bxc8 23.g3 Bh6 24.Nd2 Kg7 25.Nc4 Qe6 26.b5 Qe7 27.Nd1 Bd7 28.Rxf8 Qxf8 29.a4 Qb4 30.h4 Qc5 Morozevich,A (2742)-Bareev,E (2707)/Monaco 2002/CBM 087 ext/10 (49); 16.Nd1 Ng6 17.Nh4 f5 18.Nxg6 hxg6 19.Nf2 Rac8 20.Nh3 Kg7 21.Kh1 Rh8 22.g4 Qd8 23.Qg2 Bxe3 24.gxf5 exf5 25.Rae1 Bd2 26.Re2 Bh6 27.Rfe1 Rc1 28.Rxc1 Bxc1 29.Qg3 Qf6 30.Rc2 f4 Sierra Canosa,F (2141)-Serna Lara,S (2248)/Madrid 2008/CBM 124 Extra/01 (64)]

16...Rac8 Black threatens to win material: Rc8xc3
17.Nd1 Be8
18.Kh1 Kh8
19.g4 Bg6
20.Bxg6 Nxg6
21.h4 <0.22> 21...Qd6

22.h5 White threatens to win material: h5xg6
22...Ne7

23.e4 <0.63> [23.Rg1 Rg8=] 23...Qg3

24.Qg2 Qxg2+
25.Kxg2 dxe4
26.Rxe4 White king safety improved 26...Nd5 A sound move

27.Kg3 f5
28.Rxe6 Bf4+ <0.51>

29.Kh4 fxg4
30.Kxg4 <0.61> 30...Bc1 <0.07><better is 30...Bb8>

31.Re5 White threatens to win material: Re5xd5. 'the rook is the rook!'

31...Rcd8

32.Rf2 Rg8+
33.Kh4 h6 Consolidates g5
34.Rf5 Bf4
35.Ne5 0.0 35...Bxe5
36.Rxe5 [Instead of 36.dxe5 Ne7 37.Rf6 Rxd1 38.Rxh6+ Kg7+] 36...Nxb4
37.Re4 Nc6
38.Rff4 Rg2
39.Nf2 Rh2+
40.Nh3 Rd2 <0.14>[Black threatens to win material: Rd2xd4 ]

41.Re6 [White threatens to win material: Re6xh6 41...R2xd4]

42.Rxh6+ Kg7 [Black threatens to win material: Kg7xh6 ]

43.Rg6+ Kh8
44.Rh6+ Kg7
45.Rg6+ Kh8 Twofold repetition
46.Rh6+ Kg7 <0.03>

Oct-19-10  SugarDom: Jose Fernando Cubas - Wesley So, Chess Olympiad 2010


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Here black move 30... Bc1 and lost advantage.

Analysis by Houdini 1.03a x64 8_CPU:

30...Bb8 31.Nd2 Rg8+ 32.Kf3 Rg3+ 33.Ke4 Rd8 34.h6 Rg4+ 35.Kd3 Nf4+ 36.Rxf4 Bxf4 37.Ne4 Rh4 38.Ndc3 Rxh6 39.Re7 Rh3+ 40.Kc4 Rc8+ 41.Nc5 b6 42.Rxa7 bxc5 43.dxc5 Rh4 44.Kb5 Rb8+ 45.Ka5 Be5 46.Nb5 Rh6 47.a4 Kg8 48.Nc7 Rd8 49.Kb5 Rh4

(-0.71) Depth: 26/66 00:01:35 1203mN

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