Svidler, Peter – Topalov, Veselin [B90]
Corus 2007, 26.01.2007

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e5 7.Nb3 Be6 8.Qd2 Nbd7 9.0–0–0 Be7 10.f3 h5 11.Kb1 (Topalov is an expert in this line. However, I am not sure if it is a good idea not to deviate to surprise Svidler in such a crucial round.) 11…Qc7 (Two more popular lines are 11…Rc8 and 11…b5) 12.Bd3 (This seems to be a new or very rare move. 12.g3, 12.h3 and 12.Qf2 are the more known lines. It doesn’t seem to be too ambitious.) 12…b5 (Here comes the attack by Topalov. As usual, Black has to attack the Queenside as fast as possible.) 13.Bg5 (New idea by Svidler. White’s attack does not seem to be to worrisome.) 13…Nb6 (White must start to launch his own attack on the Kingside now with 13.f4. He cannot afford to sit back and wait.) 14.f4 Rb8 (This is a very surprising move to me. I expected 14…Nc4.) 15.Rhe1 (A curious move. I would have played Rhf1 instead.) 15…Nc4 (A good choice. I believe White has to capture the Knight as he cannot allow the Knight to sit there.) 16.Bxc4 (Svidler took a long time for this move but made the right decision to capture the Knight. Now Topalov has to take back with the pawn.) 16…bcx4 17.Nc1 (In my opinion, Black is a lot better now. He launched the Queenside attack first and has a more potent position.) 17…Qb7 18.b3 (This is the kind of position that Topalov wants to have. White does not have time to attack on the Kingside as he has to focus on defending the attack by Black on the Queenside.) 18…exf4 19.Bxf4 (19.Qxf4 is also fine and actually may even be a little better.) 19…O-O 20.Bxd6 Bxd6 (20… Rfd8 21. e5 Bxd6 22. exd6 Rbc8 -/+) 21.Qxd6 Rfc8 =+ 22.Nd5 Nxd5 23.exd5 Bf5 24.Rd2 Bg6 25.Re7 Qb5 26.Rc7 (I like Black’s position very much. I think 26…cxb3 is borderline winning.) 26…Qa5 (26…cxb3 27. Nxb3 a5 -+) 27.Rxc8+ Rxc8 28.Re2? (This is a losing move. 28.Qf4 may be the only shot to have a chance to hold on. Even with this, Black is still much better.) cxb3 29.axb3 Qc3 30.Qg3 Bxc2+ 31.Ka2 -+ Bb1+?! (31…Qc5 is much stronger!) 32. Kxb1 Qxc1+ 33. Ka2 Rc5? (33…Rc2+ -+) 34. Qb8+ Kh7 35.Qb4 f5?? (Topalov went from a completely winning position to a much worse position, probably even losing. 35…Rb5 would still give Black some advantage.) 36.Qd2 (Svidler found the right move. Now Black would have to be lucky to draw this game. This is a stunning turn of event!) 36…Qxd2 37.Rxd2 Kg6? (38.d6 and game over!) 38.b4 (I just calculated again and 38.b4 is not as bad as first looked. 38.d6 seems stronger at first glance.) 38…Rc8 39.Kb3 Kf7 40.Ra2 Ra8 (White is still better but not easy to convert. However, White needs to play 41.h4 now to stop Black from getting g5 in.) 41.h4 (This is the best shot for White. If White wants to win, he has to keep the Black Kingside pawns in check.) 41…f4 (I am not sure if this is the best move. Perhaps Topalov still thinks that he is winning and he is going for it. I am also not sure if his personal relationship with Svidler who openly supported Kramnik during Elista had anything to do with his decision making.) 42.Re2 += Kf6 43.Kc4 Rc8+ 44.Kd4 Rb8 (I think White has a very strong position after 45.d6. I am not sure if Black can even hold this with best play.) 45.d6! Rxb4+ 46.Kc5 Rb1 47.Rd2 +- (This is a resignable position for Black. White is completely winning! What a painful loss!)

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