[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.15"]
[Round "6"]
[White "Costa, Joao C"]
[Black "Da Silva, Rodrigo Chaves"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "1907"]
[BlackElo "2212"]
[PlyCount "34"]
[EventDate "2010.11.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. d3 Bc5 5. 0-0 d6 6. Bg5 h6 7. Be3 Bb6 8. c3 0-0 9. Nbd2 Be6 10. b4 Ne7 11. Bb3 Ng6 12. d4 Bxb3 13. Qxb3 Ng4 14. Nc4 Nxe3 15. Nxe3 c6 16. Rad1 Re8 17. dxe5 Bxe3 1/2-1/2

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.15"]
[Round "7"]
[White "Costa, Joao C"]
[Black "De Vjunior, Liduino Furtado"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1907"]
[BlackElo "1994"]
[PlyCount "112"]
[EventDate "2010.11.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 Be7 7. 0-0 f6 8. dxc5 Bxc5 9. b4 Be7 10. Be3 Qc7 11. exf6 Nxf6 12. Bb5 0-0 13. Re1 a6 14. Bxc6 bxc6 15. Bd4 Bd6 16. Ne5 a5 17. Qa4 Bb7 18. Qb3 axb4 19. cxb4 Ne4 20. Nf3 Qf7 21. Nc3 Qh5 22. Nxe4 Rxf3 23. Nxd6 Rxb3 24. Nxb7 Rd3 25. Bc5 d4 26. g3 Qf3 27. a4 Rd2 28. Rf1 e5 29. Nd6 Rf8 30. Ne4 Qxe4 31. Bxf8 Kxf8 32. a5 Qf5 33. a6 Qc8 34. a7 Qa8 35. Rfe1 Rb2 36. Rxe5 Rxb4 37. Rf5+ Kg8 38. Re5 Kf7 39. Rc5 Rb7 40. Rxc6 Rd7 41. Rc8 Qxc8 42. a8Q Qxa8 43. Rxa8 Ke6 44. Ra1 Kd5 45. Kf1 Re7 46. Re1 Rxe1+ 47. Kxe1 Ke4 48. Ke2 d3+ 49. Kd2 Kf3 50. Kxd3 Kxf2 51. Ke4 Kg2 52. Kf4 Kxh2 53. Kg4 Kg2 54. Kh4 Kf3 55. g4 Kf4 56. Kh5 g5 0-1

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.14"]
[Round "4"]
[White "Costa, Joao C"]
[Black "Souza Neves, Andrey Marcelo"]
[Result "0-1"]
[ECO "B72"]
[WhiteElo "1907"]
[BlackElo "2097"]
[PlyCount "42"]
[EventDate "2010.11.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. Qd2 Ng4 9. Bxg4 Bxg4 10. f3 Bd7 11. 0-0-0 0-0 12. h4 Ne5 13. Qe2 Rc8 14. h5 Nc4 15. hxg6 hxg6 16. g4 Qb6 17. b3 Nxe3 18. Qxe3 e6 19. Qd2 Qxd4 20. Qh2 Qe3+ 21. Kb1 Rfe8 0-1

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.14"]
[Round "5"]
[White "Junior, Otavio"]
[Black "Costa, Joao C"]
[Result "0-1"]
[ECO "D78"]
[WhiteElo "2043"]
[BlackElo "1907"]
[PlyCount "15"]
[EventDate "2010.11.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 d5 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. c4 c6 7. Nc3 Bg4 8. Ne5 0-1

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.13"]
[Round "3"]
[White "Amorim, Genaro Jose Melo De"]
[Black "Costa, Joao C"]
[Result "0-1"]
[ECO "A95"]
[WhiteElo "1924"]
[BlackElo "1907"]
[PlyCount "92"]
[EventDate "2010.11.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. g3 f5 2. Bg2 Nf6 3. c4 e6 4. d4 c6 5. Nf3 d5 6. 0-0 Be7 7. Nc3 0-0 8. Ne5 Nbd7 9. f4 Qe8 10. cxd5 exd5 11. Qb3 Kh8 12. Bd2 Bd6 13. Rac1 Ne4 14. Be1 Ndf6 15. Nd1 Rb8 16. Bb4 Qe7 17. Bxd6 Qxd6 18. Qa4 a6 19. Nf2 Nxf2 20. Rxf2 Ne4 21. Bxe4 fxe4 22. e3 g6 23. g4 Kg7 24. Qa5 Be6 25. a4 Rbe8 26. Rfc2 Qd8 27. Qe1 Bc8 28. h4 h6 29. Qg3 Kh7 30. b4 Qb6 31. b5 axb5 32. Rb1 b4 33. Rcb2 c5 34. dxc5 Qxc5 35. Rxb4 Rxe5 36. fxe5 Rf3 37. Qe1 Rxe3 38. Rxb7+ Kg8 39. Qf2 Rg3+ 40. Kf1 Rf3 41. Qxf3 exf3 42. Rb8 Kf7 43. e6+ Kxe6 44. R8b6+ Ke5 45. Re1+ Kf4 46. Rb2 Ba6+ 0-1

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.13"]
[Round "2"]
[White "Costa, Joao C"]
[Black "Cohen Farias, Paulo"]
[Result "1/2-1/2"]
[ECO "B80"]
[WhiteElo "1907"]
[BlackElo "2063"]
[PlyCount "77"]
[EventDate "2010.11.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. Be3 b5 8. Qd2 Bb7 9. 0-0-0 Nbd7 10. g4 Nb6 11. Qf2 Nfd7 12. Nb3 Rc8 13. Bd3 Nc4 14. Bxc4 Rxc4 15. Rd2 Be7 16. h4 b4 17. Na4 0-0 18. g5 d5 19. Rhd1 Bc6 20. Nb6 Nxb6 21. Bxb6 Qb8 22. Na5 Qf4 23. Nxc4 dxc4 24. Be3 Qe5 25. Bd4 Qa5 26. Kb1 c3 27. Bb6 Qa4 28. Rd4 e5 29. Rd8 Bxd8 30. Rxd8 Rxd8 31. Bxd8 Qb5 32. Bb6 a5 33. b3 a4 34. Bc5 Bd7 35. Be3 Be6 36. Bc1 axb3 37. axb3 g6 38. f4 exf4 39. Qxf4 1/2-1/2

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.12"]
[Round "1"]
[White "Da Silva, Lorena Raissa Silva"]
[Black "Costa, Joao C"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "1741"]
[BlackElo "1907"]
[PlyCount "62"]
[EventDate "2010.11.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Be7 6. Bd3 0-0 7. Qc2 Nbd7 8. a4 Re8 9. 0-0 Nf8 10. c5 b6 11. b4 bxc5 12. bxc5 Rb8 13. e4 Qc7 14. Bf4 Qxf4 15. Ne2 Qc7 16. e5 N6d7 17. Ng3 f6 18. Rfe1 fxe5 19. Nxe5 Nxe5 20. Rxe5 Bf6 21. Rh5 g6 22. Rh3 Bxd4 23. Re1 Rb2 24. Qc1 Rxf2 25. Kh1 e5 26. Re2 Bxh3 27. Rxf2 Bxf2 28. gxh3 e4 29. Kg2 Bxg3 30. hxg3 exd3 31. Qd2 Re2+ 0-1

[Event "Sindilegis op-B"]
[Site "Sindilegis"]
[Date "2009.10.25"]
[Round "?"]
[White "Brito, Erick de Paula"]
[Black "Costa, Joao C"]
[Result "0-1"]
[ECO "C60"]
[WhiteElo "1818"]
[BlackElo "2009"]
[PlyCount "18"]
[EventDate "2009.10.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Qf6 4. Nc3 Nge7 5. 0-0 g5 6. d4 Nxd4 7. Nxg5 Rg8 8. Qh5 h6 9. Nh7 Qg7 0-1

[Event "Sindilegis op-B"]
[Site "Sindilegis"]
[Date "2009.10.25"]
[Round "?"]
[White "Costa, Joao C"]
[Black "Bispo, Leonardo"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "2009"]
[BlackElo "2142"]
[PlyCount "92"]
[EventDate "2009.10.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d3 d5 4. exd5 Qxd5 5. Be2 Nc6 6. 0-0 Bf5 7. Nc3 Qd7 8. Bg5 0-0-0 9. a3 Be7 10. b4 h6 11. Bh4 g5 12. Bg3 h5 13. Nxe5 Nxe5 14. Bxe5 h4 15. Ne4 h3 16. Re1 Qd5 17. Bf3 Qxe5 18. Nc5 Qd6 19. Bxb7+ Kb8 20. Qf3 Bg4 21. Qe3 hxg2 22. f4 gxf4 23. Qxe7 f3 24. Qxd6 cxd6 25. Ne4 Nh5 26. Ba6 Nf4 27. Nf2 f5 28. d4 Rd7 29. Re3 Rdh7 30. Rae1 Rxh2 31. Re8+ Kc7 32. Rxh8 Rxh8 33. Bd3 d5 34. a4 Kd6 35. a5 Ne6 36. c3 Ng5 37. c4 Ne4 38. c5+ Kc7 39. b5 Ng3 40. b6+ axb6 41. axb6+ Kb8 42. Nxg4 Rh1+ 43. Kf2 Rxe1 44. Kxe1 g1Q+ 45. Kd2 fxg4 46. c6 Qxd4 0-1

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "1"]
[White "Araujo, Philipe"]
[Black "Costa, Joao C"]
[Result "0-1"]
[ECO "C88"]
[PlyCount "60"]
[EventDate "2007.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bb7 7. c3 Be7 8. 0-0 0-0 9. Re1 d6 10. d4 h6 11. h3 Re8 12. Nh4 Nxe4 13. Bd5 Nf6 14. dxe5 Nxd5 15. Qxd5 Bxh4 16. e6 fxe6 17. Rxe6 Rxe6 18. Qxe6+ Kh8 19. Be3 Qe7 20. Qg4 Ne5 21. Qd4 Bf6 22. Qd1 Nc4 23. Bd4 Bxd4 24. Qxd4 Qe4 25. Qxe4 Bxe4 26. b3 Ne5 27. Nd2 Bc6 28. f4 Nd3 29. g3 Re8 30. Nf1 Re2 0-1

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "3"]
[White "Costa, Alan"]
[Black "Costa, Joao C"]
[Result "1-0"]
[ECO "A80"]
[PlyCount "79"]
[EventDate "2007.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 Nf6 3. Bf4 d6 4. e3 e6 5. Bc4 Be7 6. Ng5 d5 7. Bd3 Ne4 8. Nf3 0-0 9. h3 Bd6 10. Nbd2 Bxf4 11. exf4 Nc6 12. c3 Qe8 13. Qe2 Ne7 14. 0-0-0 Ng6 15. g3 c5 16. h4 c4 17. Bb1 h6 18. h5 Ne7 19. Ne5 Qa4 20. Nxe4 fxe4 21. f3 Nf5 22. Rdg1 exf3 23. Qxf3 b5 24. g4 b4 25. gxf5 bxc3 26. Qxc3 Rb8 27. Rxg7+ Kxg7 28. Rg1+ Kf6 29. Qg3 Rb7 30. Qg6+ Ke7 31. Qg7+ Rf7 32. Qxf7+ Kd6 33. Qf8+ Kc7 34. Rg7+ Kb8 35. Qd6+ Ka8 36. Rxb7 Kxb7 37. fxe6 c3 38. Qxd5+ Kb8 39. Qd6+ Kb7 40. Be4+ 1-0

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "2"]
[White "Costa, Joao C"]
[Black "Fonseca, Natan"]
[Result "0-1"]
[ECO "B50"]
[PlyCount "78"]
[EventDate "2007.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nf3 Nf6 4. Bc4 e6 5. 0-0 Be7 6. d3 0-0 7. Re1 Nc6 8. a3 a6 9. Ba2 b5 10. e5 dxe5 11. Nxe5 Nxe5 12. Rxe5 Qc7 13. Re1 Bb7 14. Bg5 h6 15. Bxf6 Bxf6 16. Ne4 Bxb2 17. Rb1 Bxa3 18. Qh5 Rac8 19. Re3 Qe7 20. Rg3 Bxe4 21. dxe4 c4 22. Qxh6 f6 23. Qh4 Bd6 24. Rh3 Rcd8 25. Bxc4 bxc4 26. Rb7 Qxb7 27. Qh7+ Kf7 28. Qh5+ Ke7 29. g3 Qb1+ 30. Kg2 Qxc2 31. Qg6 Rg8 32. Rh7 Rdf8 33. Rxg7+ Rxg7 34. Qxg7+ Ke8 35. Qb7 Qa4 36. h4 Qb5 37. Qa8+ Bb8 38. Kh3 e5 39. f4 c3 0-1

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "6"]
[White "Costa, Joao C"]
[Black "Lima, Endson dos Santos"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "61"]
[EventDate "2007.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 g6 4. f4 Bg7 5. Nf3 0-0 6. 0-0 c5 7. d5 e6 8. c4 Re8 9. Nc3 a6 10. a4 a5 11. Re1 Na6 12. e5 dxe5 13. fxe5 Nd7 14. d6 f6 15. exf6 Bxf6 16. Nb5 e5 17. Be4 Nf8 18. Bh6 Ne6 19. Bd5 Bd7 20. Bxb7 Nd4 21. Bxa8 Qxa8 22. Nfxd4 exd4 23. Rxe8+ Qxe8 24. Qe1 Qf7 25. Qe4 Nb8 26. Qb7 Qe8 27. Nc7 Qc8 28. Qd5+ Kh8 29. Qf7 Qd8 30. Rf1 Bf5 31. Ne8 1-0

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "4"]
[White "Costa, Joao C"]
[Black "Mesquita, Gleidson"]
[Result "1-0"]
[ECO "C40"]
[PlyCount "49"]
[EventDate "2007.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. d4 d6 5. Nf3 fxe4 6. Ng5 d5 7. Be3 h6 8. Nh3 Bd6 9. Nd2 Ne7 10. g3 0-0 11. Bg2 Nf5 12. 0-0 Nxd4 13. c3 Nf3+ 14. Kh1 Bxh3 15. Bxh3 g5 16. Nxf3 exf3 17. Qxd5+ Kh7 18. Bd4 c6 19. Qe4+ Qg6 20. Qxg6+ Kxg6 21. Rfe1 Bc7 22. Re6+ Kf7 23. Rae1 Na6 24. Re7+ Kg6 25. R1e6+ 1-0

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "7"]
[White "Souza, Etemberg"]
[Black "Costa, Joao C"]
[Result "0-1"]
[ECO "D03"]
[PlyCount "124"]
[EventDate "2007.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bg5 e6 4. e3 Nbd7 5. Nbd2 Be7 6. Rc1 b6 7. h3 Bb7 8. Be2 Rc8 9. 0-0 0-0 10. a3 Ne8 11. Bf4 Bd6 12. Ne5 f6 13. Nxd7 Qxd7 14. Bd3 Bxf4 15. exf4 Nd6 16. c3 c5 17. Qh5 g6 18. Qg4 c4 19. Bc2 Rce8 20. Rfe1 Bc8 21. Qd1 Qg7 22. Re3 Qh6 23. Qf3 f5 24. Rce1 Ne4 25. Nxe4 fxe4 26. Qe2 Qxf4 27. Rg3 Rf6 28. Rg4 Qd6 29. Qe3 Ref8 30. Re2 e5 31. Rg5 exd4 32. Qxd4 Bb7 33. Rd2 Qc5 34. Qxc5 bxc5 35. Re5 Rb6 36. Ba4 Kg7 37. Re7+ Rf7 38. Rd7 Rxd7 39. Bxd7 Kf6 40. Kf1 Ke5 41. Be8 d4 42. a4 Rf6 43. Ke2 d3+ 44. Ke3 Bc8 45. Bb5 Bxh3 46. f3 Be6 47. fxe4 h5 48. Bc6 Rf1 49. Rf2 Rxf2 50. Kxf2 Kf4 51. Be8 Kg5 52. a5 h4 53. Ba4 Kf4 54. Bd1 g5 55. e5 g4 56. a6 g3+ 57. Ke1 Kxe5 58. Bf3 Kf4 59. Bb7 Ke3 60. Bf3 d2+ 61. Kd1 Bd7 62. b3 cxb3 0-1

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "5"]
[White "Souza, Jurandir Araujo"]
[Black "Costa, Joao C"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "101"]
[EventDate "2007.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. d3 Be7 5. Nc3 d6 6. h3 h6 7. Be3 Na5 8. Bb3 c5 9. Bd5 Nxd5 10. Nxd5 Nc6 11. c3 Be6 12. Nxe7 Qxe7 13. 0-0 0-0 14. Nh2 Qh4 15. f4 f5 16. Nf3 Qe7 17. fxe5 f4 18. exd6 Qxd6 19. Bf2 Rad8 20. d4 Bc4 21. Re1 cxd4 22. cxd4 Nb4 23. b3 Ba6 24. Ne5 Rfe8 25. a3 Nc6 26. Nxc6 Qxc6 27. Qf3 g5 28. d5 Qf6 29. Bxa7 b6 30. Qf2 Rd6 31. Rac1 Bd3 32. e5 Rxe5 33. Rxe5 Qxe5 34. Bb8 Qxd5 35. Bxd6 Qxd6 36. Rc8+ Kh7 37. Qb2 Qe7 38. Qh8+ Kg6 39. Rc6+ Kf5 40. Qc8+ Ke5 41. Rxh6 Kd4 42. Qe6 Qxa3 43. Qxb6+ Kc3 44. Qf6+ Kxb3 45. Qxg5 Qc1+ 46. Kh2 Qc7 47. Qd5+ Kb2 48. Qxd3 f3+ 49. Qd6 f2 50. Qxc7 f1Q 51. Rb6+ 1-0

[Event "Itau Mercosul Cup 1st"]
[Site "Sao Paulo"]
[Date "1997.10.19"]
[Round "1"]
[White "Costa, Joao C"]
[Black "Pelikian, Jefferson"]
[Result "0-1"]
[ECO "B70"]
[BlackElo "2385"]
[PlyCount "80"]
[EventDate "1997.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 060 Extra"]
[Source "ChessBase"]
[SourceDate "1997.11.04"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.04"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Bb5+ Bd7 8. Bxd7+ Nbxd7 9. 0-0 0-0 10. Qd2 Ne5 11. f4 Nc4 12. Qe2 Rc8 13. b3 Qb6 14. Rad1 Nb2 15. Rd2 Rxc3 16. e5 Nd5 17. Qb5 dxe5 18. fxe5 e6 19. Qxb6 Nxb6 20. Re2 Rc7 21. Bc1 N2c4 22. bxc4 Nxc4 23. Rfe1 Rd7 24. Nf3 Rc8 25. Bf4 h6 26. h4 Kh7 27. a4 Rc5 28. Re4 b6 29. R1e2 Na3 30. Ne1 Nb1 31. Nd3 Rxd3 32. cxd3 Nc3 33. Re1 Nxe4 34. Rxe4 Rd5 35. Rc4 Bxe5 36. Bxe5 Rxe5 37. Rc7 Kg7 38. Rxa7 Ra5 39. Rb7 Rxa4 40. Rxb6 Rxh4 0-1

[Event "Itau Mercosul Cup 1st"]
[Site "Sao Paulo"]
[Date "1997.??.??"]
[Round "3"]
[White "Costa, Joao C"]
[Black "Santos, Marcus"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "106"]
[EventDate "1997.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Qe2+ Be7 5. Nc3 Nc6 6. Nf3 Bg4 7. Qb5 Nf6 8. Ne5 Bd7 9. Nxd7 Qxd7 10. Bd3 0-0 11. Be3 a6 12. Qb3 b5 13. a3 Na5 14. Qa2 c6 15. 0-0 Ng4 16. h3 Nxe3 17. fxe3 Bg5 18. Rae1 Rae8 19. Nd1 Nc4 20. Bxc4 dxc4 21. c3 Qd5 22. Qb1 f5 23. Qc2 Re4 24. Rf3 Rfe8 25. Qf2 g6 26. g3 h5 27. h4 Bh6 28. Kh2 Qd6 29. Kg2 R8e6 30. Re2 Qd8 31. Qe1 Qd5 32. Qf2 a5 33. Kh2 Bf8 34. Qg2 Bd6 35. Nf2 Rxh4+ 36. Kg1 Rg4 37. Nxg4 hxg4 38. Rff2 Re4 39. Re1 Kg7 40. Rfe2 Qe6 41. Kf2 Be7 42. Rh1 Bg5 43. Qh2 Qg8 44. Ree1 Re8 45. Re2 b4 46. cxb4 axb4 47. axb4 Qd5 48. Qg2 Bxe3+ 49. Kf1 Qxd4 50. Qxc6 Qd1+ 51. Re1 Qd3+ 52. Re2 Re7 53. Qg2 Bc5 0-1

[Event "BRA-ch sf"]
[Site "Porto Alegre"]
[Date "1994.06.??"]
[Round "5"]
[White "Costa, Joao C"]
[Black "Rotta, Cassio"]
[Result "0-1"]
[ECO "B21"]
[PlyCount "74"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. f4 g6 3. Nf3 Bg7 4. c3 Nc6 5. Na3 d6 6. Be2 e6 7. 0-0 Nge7 8. Qe1 0-0 9. g4 f5 10. gxf5 exf5 11. d3 a6 12. Be3 b5 13. Kh1 b4 14. Nc2 bxc3 15. bxc3 Rb8 16. e5 dxe5 17. Bxc5 Bb7 18. fxe5 Nxe5 19. d4 Nxf3 20. Bxf3 Bxf3+ 21. Rxf3 Qd5 22. Qf1 Bf6 23. Nb4 Qa8 24. Kg1 a5 25. Nd3 Rfe8 26. Nf4 Kh8 27. Rh3 Qc6 28. Re1 Nd5 29. Nxg6+ Kg7 30. Nh4 Bxh4 31. Rxe8 Rxe8 32. Qg2+ Kh8 33. Rxh4 Rg8 34. Qxg8+ Kxg8 35. Rh3 f4 36. Kf2 Ne3 37. Rf3 Qe4 0-1

[Event "BRA-ch sf"]
[Site "Porto Alegre"]
[Date "1994.06.??"]
[Round "2"]
[White "Costa, Joao C"]
[Black "Ruppel, Luiz Bittencourt"]
[Result "1-0"]
[ECO "B41"]
[BlackElo "2225"]
[PlyCount "93"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Be3 Qc7 6. c3 Nf6 7. Nd2 b5 8. Be2 d5 9. Qc2 Bb7 10. Bf3 e5 11. Ne2 h6 12. Rc1 Nbd7 13. 0-0 Rc8 14. Qb1 Be7 15. Ng3 g6 16. Rfd1 h5 17. exd5 Nxd5 18. Nde4 Nxe3 19. fxe3 h4 20. Nf1 Nc5 21. b4 Ne6 22. h3 0-0 23. Nh2 f5 24. Qb3 Qc4 25. Nd6 Qxb3 26. axb3 Bxf3 27. Nxf3 Rc6 28. Nb7 Bf6 29. c4 bxc4 30. Rxc4 Rxc4 31. bxc4 Rb8 32. Nc5 Nxc5 33. bxc5 e4 34. Nd4 f4 35. c6 Be5 36. exf4 Bxf4 37. Ne6 Rc8 38. Nxf4 Rxc6 39. Rd4 e3 40. Kf1 a5 41. Nd5 Kf7 42. Nxe3 a4 43. Rd7+ Ke6 44. Ra7 Ke5 45. Rxa4 Kf4 46. Nd5+ Kg3 47. Kg1 1-0

[Event "BRA-ch sf"]
[Site "Porto Alegre"]
[Date "1994.06.??"]
[Round "3"]
[White "Leitao, Rafael Duailibe"]
[Black "Costa, Joao C"]
[Result "1-0"]
[ECO "D86"]
[WhiteElo "2315"]
[PlyCount "75"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. Nc3 g6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 0-0 8. Ne2 b6 9. Be3 Ba6 10. Bxa6 Nxa6 11. 0-0 Qd7 12. Qb3 c6 13. Rfd1 Nc7 14. Rac1 Qe6 15. f3 Qxb3 16. axb3 Rfd8 17. c4 Rd7 18. Rd2 Rad8 19. Ra2 a5 20. f4 Na6 21. d5 Nb4 22. Rd2 c5 23. Nc3 Ra8 24. e5 e6 25. Rcd1 Rad8 26. dxe6 Rxd2 27. Rxd2 Re8 28. exf7+ Kxf7 29. Na4 g5 30. g3 gxf4 31. gxf4 Re6 32. Rd7+ Kf8 33. Nxb6 Rg6+ 34. Kf1 Ke8 35. f5 Rxb6 36. Rxg7 Nd3 37. e6 Rxb3 38. Rg8+ 1-0

