Brazilian Championship

(1) Fier,Alexandr (2581) - Diamant,André (2412) [B63] 75 Camp Brasileiro de Xadrez Porto Alegre (1.6), 07.12.2008 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.0-0-0 Qb6 9.Nb3 0-0 10.f3 a6 11.g4 Qc7 12.Be3 b5 13.g5 Nd7 14.Kb1 Nce5 15.f4 Nc4 16.Bxc4 Qxc4 17.Qg2 Qc7 18.h4 Bb7 19.h5 Rad8 20.a3 Nb6 21.g6 Nc4 22.h6 fxg6 23.hxg7 Rf6 24.Qh2 h5 25.Bc1 Rf7 26.Rhe1 Bf6 27.Na2 Rxg7 28.Nd4 Re8 29.b3 Bxd4 30.Rxd4 Qc5 31.Red1 Nxa3+ 32.Kb2 a5 33.Qe2 b4 34.Rxd6 Rc7 35.R6d2 Rec8 36.Rd8+ Rxd8 37.Rxd8+ Kh7 38.c4 bxc3+ 39.Ka1 Nb5 40.f5 exf5 41.exf5 Nd4 42.fxg6+ Kg7 43.Qe8 Nxb3+ 44.Kb1 Qf5+ 0-1

(2) Gattass,Allan (2223) - Vescovi,Giovanni (2635) [B42] 75 Camp Brasileiro de Xadrez Porto Alegre (4.4), 09.12.2008 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Bc5 6.Nb3 Be7 7.c4 d6 8.0-0 Nf6 9.Nc3 0-0 10.f4 Nc6 11.Rf3 Re8 12.Rh3 g6 13.g4 Nd7 14.g5 Nf8 15.Rg3 Nb4 16.Bb1 b5 17.cxb5 axb5 18.f5 d5 19.a3 Bd6 20.axb4 Rxa1 21.Nxa1 Bxg3 22.hxg3 Qb6+ 23.Kg2 d4 24.Ne2 Rd8 25.f6 e5 26.Bd3 Qe6 27.Ng1 Bb7 28.Nb3 Nd7 29.Nh3 Qd6 30.Bd2 Nb6 31.Nf2 Nc4 32.Na5 Ba6 33.Bxc4 bxc4 34.b5! Qb6 35.Nc6 Bxb5 36.Nxd8 Qxd8 37.Qh1 h5 38.Qa1 Bc6 39.Qa5 Qe8 40.Qc7 Qe6 41.Qe7 Qxe7 42.fxe7 Kg7 43.Kf3 f5 44.gxf6+ Kxf6 45.Bb4 Bd7 46.Bd6 Ke6 47.Bc7 Bb5 48.Ke2 c3+ 49.Kd1 cxb2 50.Kc2 g5 51.Kxb2 h4 52.g4 Bc6 53.Kc1 h3 54.Nxh3 Kxe7 55.Nf2 Kf6 56.Bd8+ Kg6 57.Kd2 Bb7 58.Ke2 Bc6 59.Be7 Bb5+ 60.Kf3 Bf1 61.Bd8 Ba6 62.Nh3 Bb5 63.Nxg5 Ba6 64.Ne6 d3 65.Ba5 1-0

(3) Milos,Gilberto (2593) - Vescovi,Giovanni (2635) [C10] 75 Camp Brasileiro de Xadrez Porto Alegre (8.6), 14.12.2008 1.e4 e6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Nxf6+ Nxf6 7.Bc4 c5 8.Be3 Ng4 9.Bg5 Qa5+ 10.c3 h6 11.Bh4 Be7 12.Bxe7 Kxe7 13.0-0 Rd8 14.Re1 cxd4 15.Nxd4 Nf6 16.Qf3 Kf8 17.Bb3 Qb6 18.Re3 a5 19.a4 Bd7 20.Rae1 Rac8 21.Re5 Kg8 22.Qg3 Rc5 23.h3 Rxe5 24.Qxe5 Bc6 25.Qe3 Be4 26.Re2 e5 27.Nb5 Qxe3 28.fxe3 Bd3 29.Rd2 Rd7 30.Rd1 Bxb5 31.axb5 Rxd1+ 32.Bxd1 b6 33.Bb3 Kf8 34.Kf2 Ne4+ 35.Ke2 Nd6 36.c4 Nb7 37.Bc2 Nc5 38.Kf3 Ke7 39.h4 g6 40.g4 Kd6 41.Be4 Na4 42.b3 Nc5 43.Bc2 g5 44.hxg5 hxg5 45.Ke2 e4 46.Kd2 Ke5 47.Ke2 Nd7 48.Kf2 Nf6 49.Bd1 Kd6 50.Ke1 Kc5 51.Kd2 Kb4 52.Kc2 Nd7 53.Kd2 Ne5 54.Bc2 Nxg4 55.Bxe4 Ne5 56.Bd5 f6 57.Be6 g4 58.e4 g3 59.Ke2 Nd3 60.Kf1 Nc5 61.Bd5 Kxb3 0-1

(4) Di Berardino,Diego (2503) - Gattass,Allan (2223) [B81] 75 Camp Brasileiro de Xadrez Porto Alegre (9.6), 14.12.2008 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g4 h6 7.Bg2 Nc6 8.h3 Be7 9.Be3 a6 10.Qe2 Qc7 11.0-0-0 Nxd4 12.Rxd4 b5 13.f4 Rb8 14.a3 Nd7 15.h4 Bf6 16.Rd3 b4 17.axb4 Rxb4 18.g5 hxg5 19.hxg5 Rxh1+ 20.Bxh1 Be7 21.Kb1 Nb6 22.Na2 Rb5 23.b3 Bb7 24.Rc3 Qd8 25.Bc1 g6 26.Rh3 Kd7 27.Bb2 Kc7 28.Rh7 Qe8 29.Nc1 Nd7 30.Qc4+ Rc5 31.Qa4 Rc6 32.Rh8 Bf8 33.Nd3 Qa8 34.Qa5+ Nb6 35.Bd4 1-0

(5) Leitão,Rafael (2590) - Lima,Darcy (2488) [D37] 75 Camp Brasileiro de Xadrez Porto Alegre (10.4), 15.12.2008 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bf4 0-0 6.e3 c5 7.dxc5 Bxc5 8.a3 Nc6 9.Qc2 Qa5 10.Rd1 Re8 11.Nd2 e5 12.Bg5 Nd4 13.exd4 [Risky. 13. Qb1 was Kortchnoi's choice.] 13...exd4+ 14.Be2 dxc3 15.Nb3 Qa4 16.Bxf6 dxc4 17.Qxc3 cxb3 18.Qxc5 gxf6 19.Rd4 Qa6 20.Qh5 f5 21.Rd8 Qa5+ 22.Rd2 Qe5 23.0-0 Be6 24.Qg5+ Kh8 25.Rfd1 Rg8 26.Qe3 Qxe3 27.fxe3 Rac8 28.Kf2 Kg7 29.Bd3 Kf6 30.Bb1 Rc5 31.Rd4 Ke5 32.g3 Rgc8 33.Ke1 R8c6 34.Bd3 b5 35.Rf4 h6 36.e4 fxe4 37.Rxe4+ Kf6 38.Rf4+ Ke7 39.a4 bxa4 40.Rxa4 a5 41.Rda1 Rd6 42.Ke2 Rdd5 43.Bc4 Rh5 44.Bxe6 Rxh2+ 45.Kd3 fxe6 46.Kd4 Kd6 47.Rxa5 Rd2+ 0-1

(6) Milos,Gilberto (2593) - Diamant,André (2412) [E94] 75 Camp Brasileiro de Xadrez Porto Alegre (10.5), 15.12.2008 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 0-0 5.e4 d6 6.Be2 e5 7.0-0 exd4 8.Nxd4 Re8 9.f3 Nc6 10.Nxc6 bxc6 11.Bg5 h6 12.Bh4 g5 13.Bf2 c5 14.Qc2 Rb8 15.Rfd1 Qe7 16.Rab1 Be6 17.a3 a5 18.Nb5 Nh5 19.g3 g4 20.f4 Bf5 21.exf5 Qxe2 22.Qxe2 Rxe2 23.b3 Nf6 24.Re1 Ra2 25.Nxc7 a4 26.Nb5 d5 27.Bxc5 axb3 28.Bd6 Rb6 29.Rxb3 Ne4 30.Rxe4 dxe4 31.c5 Ra6 32.Be5 Bf8 33.Nd6 f6 34.Nxe4 fxe5 35.fxe5 R6xa3 36.Rb7 Ra7 37.Nf6+ Kh8 38.Rb8 Ra8 39.Rxa8 Rxa8 40.Nxg4 Bxc5+ 41.Kg2 h5 42.Nf6 Bd4 43.Nxh5 Bxe5 44.Kf3 Ra4 45.h4 Kh7 46.g4 Kh6 0-1

(7) Diamant,André (2412) - Vescovi,Giovanni (2635) [B85] 75 Camp Brasileiro de Xadrez Porto Alegre (11.2), 16.12.2008 1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.d4 cxd4 5.Nxd4 d6 6.Be2 Nf6 7.0-0 Be7 8.f4 0-0 9.a4 Qc7 10.Be3 b6 11.Bf3 Bb7 12.g4 Nc6 13.g5 Nxd4 14.Qxd4 Nd7 15.Qd2 Rfe8 16.Bg2 Bf8 17.Rf3 d5 [Vescovi needs a full point and take some risks. 17...b5 was interesting but after 18.axb5 axb5 19.Rxa8 Rxa8 20.Nxb5 Qc4 21.Nc3 Bxe4 22.b3 Ra1+ 23.Rf1 Rxf1+ 24.Bxf1 Qb4 Black could hardly play for a win.] 18.exd5 Rad8 19.Rh3 Nc5 20.Qf2 [Even needing just a draw, Diamant plays aggressively. Another try is 20.b4 Nd7 21.Qd3 g6 22.d6!? ] 20...exd5 21.Qh4 h6 22.gxh6 [Critical moment. How must Black defend?] 22...d4! 23.hxg7 Bxg7 24.Bxb7 Nxb7 [The better. 24...Qxb7 25.f5! Qc6 (25...Ne4 26.Qh7+ Kf8 27.Bh6 Bxh6 28.Rxh6 dxc3 29.Qh8+ Ke7 30.Re6+!+/- ; 25...dxe3? 26.f6+- ) 26.Qh7+ Kf8 27.Rg3 Rxe3 28.Qxg7+ Ke8 29.Rxe3+ dxe3~~ ] 25.Qh7+ Kf8 26.Rg3 f6 27.Ne4 Rxe4 28.Qxe4 dxe3 29.Rxe3 Nd6 30.Qb4 a5 31.Qc3 Nc4 [After a well calculated defense, Black got the better game.] 32.Rd3 Qc5+ 33.Kh1 Qc6+ 34.Kg1 Qc5+ 35.Kh1 Rxd3 36.Qxd3 Qc6+ 37.Kg1 Nxb2-/+ 38.Qa3+ Qc5+ 39.Qxc5+ bxc5 40.f5 Bh6 Black has a clear advantage as the rook is passive. Anyway, the endgame is far from simple.] 41.Ra3 c4 42.Kf2 Ke7 43.Rg3 Kd6 44.Rg6 Bg5 45.Kg3 Ke5 46.Kg4 Bd2 47.Rg8 Nd1 [Time pressure. 47...Nxa4 48.Rd8 Be3 49.Re8+ Kd4 50.Re6 Nc5 51.Rxf6 a4 gives Black better winning possibilities.] 48.Rd8 Ne3+ 49.Kf3 c3? [49...Nd5 was necessary: 50.h4 c3 51.Re8+ Kxf5 52.Ra8 Ne3 53.Rxa5+ Ke6 keeps Black with clear advantage in a complex endgame. Now White is winning:] 50.Re8+ Kxf5 51.Rxe3 Bxe3 [Draw agreed. White is winning but half point is enough to Diamant. Now 51...Bxe3 52.Kxe3 Kg4 (52...Ke5 53.Kd3 Kf4 54.Kxc3 Ke3 55.h4+- ) 53.Ke4 f5+ 54.Ke3 f4+ 55.Ke4 f3 56.Ke3 is zugzwang.] 1/2-1/2