[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 "1"]
[White "Costa, Alan"]
[Black "Peixoto, Rudson Marinho"]
[Result "1-0"]
[ECO "D37"]
[PlyCount "85"]
[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 d5 2. d4 Nf6 3. Bf4 e6 4. c4 Be7 5. Nc3 0-0 6. e3 c5 7. Rc1 a6 8. Be2 dxc4 9. Bxc4 b5 10. Bd3 Bb7 11. 0-0 Nc6 12. dxc5 Bxc5 13. Nxb5 Bxe3 14. Bxe3 axb5 15. Bxb5 Nb4 16. a3 Nbd5 17. Bc5 Qa5 18. Bxf8 Qxb5 19. Bd6 Ne4 20. Be5 f6 21. Qd4 Nb6 22. Bc7 Na4 23. Rfd1 Nac5 24. Nd2 Qe2 25. Nxe4 Nxe4 26. Re1 e5 27. Qc4+ Qxc4 28. Rxc4 Nd2 29. Rb4 Ba6 30. Rd1 Rc8 31. Rxd2 Rxc7 32. h3 Kf7 33. Kh2 f5 34. f3 Re7 35. Rd6 Bc8 36. Rb8 Be6 37. Rdb6 e4 38. fxe4 fxe4 39. R8b7 Bd7 40. Kg1 e3 41. Kf1 e2+ 42. Ke1 Ke8 43. Rd6 1-0

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "5"]
[White "Costa, Alan"]
[Black "Reis, Renan do Carmo"]
[Result "0-1"]
[ECO "E90"]
[PlyCount "46"]
[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. c4 c5 3. d5 d6 4. Nf3 g6 5. Nc3 Bg7 6. e4 0-0 7. Bd3 e6 8. 0-0 exd5 9. exd5 Bg4 10. h3 Bxf3 11. Qxf3 Nbd7 12. Bf4 Ne5 13. Bxe5 dxe5 14. Rfe1 Re8 15. Qe3 e4 16. Bf1 Nd7 17. g3 Bd4 18. Qf4 f5 19. h4 Ne5 20. Be2 Nf7 21. Kg2 e3 22. Rad1 Bxc3 23. bxc3 Re4 0-1

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "6"]
[White "Costa, Alan"]
[Black "Rocha, Roberto da Costa"]
[Result "0-1"]
[ECO "D94"]
[PlyCount "75"]
[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 d5 2. d4 g6 3. e3 Bg7 4. c4 c6 5. Nc3 Nf6 6. Be2 0-0 7. 0-0 Bg4 8. Ne5 Be6 9. Bd2 Nfd7 10. cxd5 cxd5 11. Nd3 Nf6 12. Nf4 Bc8 13. Qb3 e6 14. Rfc1 Nc6 15. Nd1 Ne4 16. Be1 g5 17. Nh5 Nf6 18. Nxg7 Kxg7 19. f3 h5 20. Qd3 Rh8 21. Rc5 Nd7 22. Rc2 f5 23. e4 Qf6 24. exd5 Qxd4+ 25. Qxd4+ Nxd4 26. Bc3 e5 27. Bxd4 exd4 28. Rd2 b6 29. Bb5 Ne5 30. Rxd4 Bb7 31. d6 Bxf3 32. Rc1 Bxd1 33. Rdxd1 Rhd8 34. Rc7+ Kf6 35. Re7 Rxd6 36. Rxd6+ Kxe7 37. Rh6 h4 38. Kf2 0-1

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "2"]
[White "Guimaraes, Reinaldo"]
[Black "Costa, Alan"]
[Result "1/2-1/2"]
[ECO "E29"]
[PlyCount "37"]
[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. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 0-0 7. Bd3 d6 8. Ne2 Nc6 9. 0-0 Qc7 10. Ng3 Ne7 11. Qc2 b6 12. Bb2 Bb7 13. Rfe1 Rad8 14. e4 Ng6 15. Rad1 h5 16. d5 h4 17. Nf1 e5 18. Ne3 Bc8 19. Qe2 1/2-1/2

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "4"]
[White "Lobo, Anibal Guedes"]
[Black "Costa, Alan"]
[Result "0-1"]
[ECO "B52"]
[PlyCount "68"]
[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. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. 0-0 Ngf6 6. Re1 Qc7 7. d4 cxd4 8. Nxd4 a6 9. Nc3 Rc8 10. Bg5 h6 11. Bh4 e6 12. f4 Be7 13. f5 e5 14. Nb3 b5 15. a3 0-0 16. Rc1 Rfe8 17. Qf3 b4 18. axb4 Qb6+ 19. Kh1 Qxb4 20. Bxf6 Nxf6 21. g4 Rc4 22. h4 d5 23. g5 hxg5 24. hxg5 Nxe4 25. Nxe4 dxe4 26. Qe3 Bxg5 27. Qxg5 e3 28. Qxe3 Rh4+ 29. Kg2 Qg4+ 30. Qg3 Qh5 31. Kf2 Qxf5+ 32. Ke2 Re4+ 33. Kd2 Rd8+ 34. Kc3 Qc8+ 0-1

[Event "BRA North Region-ch 10th"]
[Site "Manaus"]
[Date "2007.06.??"]
[Round "7"]
[White "Sousa, Clovis"]
[Black "Costa, Alan"]
[Result "0-1"]
[ECO "B12"]
[PlyCount "56"]
[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 c6 2. d4 d5 3. e5 Bf5 4. g4 Be4 5. f3 Bg6 6. Nh3 e6 7. Be3 Nd7 8. Bg2 c5 9. c3 cxd4 10. cxd4 Bb4+ 11. Nd2 Qb6 12. Kf2 Ne7 13. a3 Bxd2 14. Qxd2 0-0 15. Nf4 Rfc8 16. Nxg6 Nxg6 17. Kg3 Rc4 18. Bf1 Rc6 19. f4 Rac8 20. Bd3 Qb3 21. Qe2 Rc2 22. Bxc2 Rxc2 23. Qf3 Rxb2 24. Bc1 Qxf3+ 25. Kxf3 Rb3+ 26. Be3 Nb6 27. Rhe1 Nc4 28. Rab1 Nd2+ 0-1

[Event "BRA-ch62 sf"]
[Site "Florianopolis"]
[Date "1995.06.??"]
[Round "1"]
[White "Costa, Alan"]
[Black "Moro, Fabio"]
[Result "0-1"]
[ECO "D05"]
[BlackElo "2120"]
[PlyCount "92"]
[EventDate "1995.06.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 e6 3. Nbd2 c5 4. c3 Nc6 5. e3 d5 6. Bd3 Be7 7. 0-0 0-0 8. Re1 Qc7 9. Qc2 e5 10. dxe5 Nxe5 11. Nxe5 Qxe5 12. Nf1 c4 13. Be2 Bf5 14. f4 Qe6 15. Qd1 Bc5 16. Bf3 Bd3 17. Ng3 Ne4 18. Ne2 Bxe2 19. Qxe2 Rfe8 20. Bxe4 Qxe4 21. Qf3 Re7 22. Bd2 Rae8 23. Qxe4 dxe4 24. Rad1 Rd7 25. Bc1 Rd3 26. Rxd3 exd3 27. Bd2 f5 28. Kf2 Re6 29. b4 Be7 30. a4 Ra6 31. Ra1 Bf6 32. b5 Ra5 33. Kf3 a6 34. b6 Bd8 35. g4 fxg4+ 36. Kxg4 Bxb6 37. Rb1 Bc5 38. Rxb7 Rxa4 39. Rb2 a5 40. Kf5 Ra1 41. Ke6 Ba3 42. Rb8+ Bf8 43. Kd5 Ra2 44. Bc1 d2 45. Bxd2 Rxd2+ 46. Kxc4 Rxh2 0-1

[Event "BRA-ch62 sf"]
[Site "Florianopolis"]
[Date "1995.06.??"]
[Round "6"]
[White "Demasi, Joao Otavio"]
[Black "Costa, Alan"]
[Result "1-0"]
[ECO "E91"]
[PlyCount "95"]
[EventDate "1995.06.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 c5 7. d5 b5 8. cxb5 a6 9. b6 Qxb6 10. h3 Bd7 11. a4 a5 12. Nd2 Na6 13. Nc4 Qa7 14. Nxa5 Nb4 15. Nc4 Rfb8 16. 0-0 Be8 17. Bd2 Nd7 18. Nb5 Qb7 19. Qb3 Nf6 20. Nc3 Qc8 21. Qd1 Bd7 22. Kh2 Ra6 23. f4 Rba8 24. a5 Qd8 25. Nb6 Rxb6 26. axb6 Rb8 27. Bf3 Qxb6 28. Qe2 Nc2 29. Ra6 Qb3 30. Ra7 Nd4 31. Qe3 Nc2 32. Qf2 Nxd5 33. exd5 Bd4 34. Qe2 Bf5 35. Qxe7 Rf8 36. Qxd6 Bd3 37. Be2 Bxc3 38. Bxc3 Bxe2 39. Qe5 Nd4 40. Bxd4 cxd4 41. Qxe2 d3 42. Qf3 g5 43. fxg5 Qb4 44. Rc1 Qb8+ 45. Rcc7 d2 46. Qd1 Qxb2 47. Rc2 Qb4 48. Rxd2 1-0

[Event "BRA-ch62 sf"]
[Site "Florianopolis"]
[Date "1995.06.??"]
[Round "4"]
[White "Lima, Diiniz Neves"]
[Black "Costa, Alan"]
[Result "1-0"]
[ECO "B28"]
[PlyCount "37"]
[EventDate "1995.06.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 a6 5. Nf3 Nc6 6. d5 exd5 7. exd5 Bb4+ 8. Nc3 Na7 9. Be2 Nf6 10. Bg5 0-0 11. 0-0 Qb6 12. Qb3 Bc5 13. Qc4 d6 14. Bxf6 gxf6 15. Qh4 Qd8 16. Bd3 f5 17. Ng5 Re8 18. Qxh7+ Kf8 19. Qxf7# 1-0

[Event "BRA-ch62 sf"]
[Site "Florianopolis"]
[Date "1995.06.??"]
[Round "2"]
[White "Motta, Jose Maria"]
[Black "Costa, Alan"]
[Result "1-0"]
[ECO "B80"]
[PlyCount "53"]
[EventDate "1995.06.02"]
[EventType "swiss"]
[EventRounds "9"]
[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. f3 e6 7. Be3 Be7 8. Qd2 Bd7 9. Bc4 0-0 10. 0-0-0 Ne5 11. Be2 Rc8 12. g4 a5 13. h4 a4 14. a3 Qc7 15. h5 Nc4 16. Bxc4 Qxc4 17. g5 Ne8 18. g6 e5 19. Nf5 Bxf5 20. exf5 h6 21. Kb1 Bg5 22. Bxg5 hxg5 23. Nd5 Rd8 24. h6 Nf6 25. Qxg5 Nxd5 26. gxf7+ Kxf7 27. Qg6+ 1-0

