C.Costa - P.Chacon
XII TB FINAL, 1999
Carlos E. Costa

This was a very difficult game to me and the decisive for the championship. At point of move 16 I alreaedy had two draws ( both games were played by email ) and I knew that I should try to complicate matters in order to try a win against Chacon. This explains my decision to avoid too many exchanges were it was possible even if I get a sligtly worse position. At move 26 I tried a trap, on advacing my d pawn,avoiding some exchanges for a while and luckily my partner felt in it! 1.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Nf3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.a3 O-O 9.b4 Be6 10.Rb1 a6 11.d3 Qc8 12.Bb2 Rd8 13.Qc1 #this move was made based only in monography A29 without any further considerations and it came the surprise: f6!

[13...Bh3 14.Ne4 Bxg2 15.Kxg2 Qe6 16.Ba1 Nd7 17.Qc2 h6 18.Rfc1 g5 19.h3 f5 20.Ned2 g4 21.hxg4 fxg4 22.Nh2 Bg5 23.Rh1 Nf6 24.Qc4 Kf7 25.Qxe6+ Kxe6 26.Nb3 b6 27.Nf1 a5 28.b5 Nd4 29.Bxd4 exd4 30.a4 Rd7 31.f4 gxf3+ 32.exf3 Rg8 33.Kf2 1-0 em 60 lances Huebner,R-Vaganian,R/Linares 1985/MCL]

14.Qc2

[14.Ne4?! Na4!? seems good for black because e5 pawn is protected which doesn't happen in the game mentioned above]

14...f5 15.e3 Bf6 16.Rfd1 Bf7 17.Rbc1 Qe6 18.Ne2 Qb3 19.Rd2 Qxc2 20.Rcxc2 Rd6

[20...Na4 21.Rxc6!?]

21.Nc1 Rad8 22.Ne1 Bd5 23.Bxd5+ Rxd5 24.Nb3 Na4 25.Bc1 e4 26.d4 R5d7? 27.Na5 # Nxa5 28.bxa5 the Knigth on a4 is out of the game and black pawns on queenside will be weak within next moves Ra8 29.Rc4 b5 30.Rc6 Bd8 31.f3 Rd6 32.Rdc2 Kf7 33.g4 g6 34.Bd2 Rxc6 35.Rxc6 Nb2 36.gxf5 gxf5 37.Bb4 Nc4 38.Kf2 h5 39.Ng2 Ra7 40.Nf4 Bh4+ 41.Ke2 Be7 42.Rh6 Kg7 at this time I received the conditional: if 43.Rxh5 c6 but maybe it was better for black to play 43...,Bd6 although its position is very bad anyway 44.Bc3 Kg8 45.d5 cxd5 46.Nxd5 Rd7 47.fxe4 fxe4 48.Rh8+ Kf7 49.Rh7+ Ke8 50.Nxe7 Rxe7 51.Rh6 Rd7 52.Rxa6 Rd3 53.Ra8+ Kd7 54.Bd4 Rd2+ 55.Ke1 Ra2 56.a4 Na3 57.Kd1 Nc2 58.axb5 Nxd4 59.exd4 Rxh2 60.b6 #this game was decisive to the XII Brazilian Cup title because me and Chacon stayed at first place with 11/12 and I won the title on SB system

1-0

This was a very difficult game to me and the decisive for the championship. At point of move 16 I alreaedy had two draws ( both games were played by email ) and I knew that I should try to complicate matters in order to try a win against Chacon. This explains my decision to avoid too many exchanges were it was possible even if I get a sligtly worse position. At move 26 I tried a trap, on advacing my d pawn,avoiding some exchanges for a while and luckily my partner felt in it! 1.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Nf3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.a3 O-O 9.b4 Be6 10.Rb1 a6 11.d3 Qc8 12.Bb2 Rd8 13.Qc1 #this move was made based only in monography A29 without any further considerations and it came the surprise: f6!
	[13...Bh3 14.Ne4 Bxg2 15.Kxg2 Qe6 16.Ba1 Nd7 17.Qc2 h6 18.Rfc1 g5 19.h3 f5 20.Ned2 g4 21.hxg4 fxg4 22.Nh2 Bg5 23.Rh1 Nf6 24.Qc4 Kf7 25.Qxe6+ Kxe6 26.Nb3 b6 27.Nf1 a5 28.b5 Nd4 29.Bxd4 exd4 30.a4 Rd7 31.f4 gxf3+ 32.exf3 Rg8 33.Kf2 1-0 em 60 lances Huebner,R-Vaganian,R/Linares 1985/MCL]
14.Qc2
	[14.Ne4?! Na4!? seems good for black because e5 pawn is protected which doesn't happen in the game mentioned above]
14...f5 15.e3 Bf6 16.Rfd1 Bf7 17.Rbc1 Qe6 18.Ne2 Qb3 19.Rd2 Qxc2 20.Rcxc2 Rd6
	[20...Na4 21.Rxc6!?]
21.Nc1 Rad8 22.Ne1 Bd5 23.Bxd5+ Rxd5 24.Nb3 Na4 25.Bc1 e4 26.d4 R5d7? 27.Na5 # Nxa5 28.bxa5 the Knigth on a4 is out of the game and black pawns on queenside will be weak within next moves Ra8 29.Rc4 b5 30.Rc6 Bd8 31.f3 Rd6 32.Rdc2 Kf7 33.g4 g6 34.Bd2 Rxc6 35.Rxc6 Nb2 36.gxf5 gxf5 37.Bb4 Nc4 38.Kf2 h5 39.Ng2 Ra7 40.Nf4 Bh4+ 41.Ke2 Be7 42.Rh6 Kg7 at this time I received the conditional: if 43.Rxh5 c6 but maybe it was better for black to play 43...,Bd6 although its position is very bad anyway 44.Bc3 Kg8 45.d5 cxd5 46.Nxd5 Rd7 47.fxe4 fxe4 48.Rh8+ Kf7 49.Rh7+ Ke8 50.Nxe7 Rxe7 51.Rh6 Rd7 52.Rxa6 Rd3 53.Ra8+ Kd7 54.Bd4 Rd2+ 55.Ke1 Ra2 56.a4 Na3 57.Kd1 Nc2 58.axb5 Nxd4 59.exd4 Rxh2 60.b6 #this game was decisive to the XII Brazilian Cup title because me and Chacon stayed at first place with 11/12 and I won the title on SB system 1-0