[Event "Imperatriz LMX Maranhense 26th"]
[Site "Imperatriz"]
[Date "2018.07.15"]
[Round "5.5"]
[White "Da Silva, Osiel Lavor"]
[Black "Cardoso Da Silva, Roberto"]
[Result "1-0"]
[ECO "D06"]
[BlackElo "1915"]
[PlyCount "89"]
[EventDate "2018.07.26"]
[EventType "swiss"]
[EventRounds "5"]
[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 Bf5 4. c4 e6 5. Nc3 Be7 6. e3 0-0 7. Rc1 c6 8. c5 Ne4 9. h3 Qa5 10. Bd3 b5 11. Bxe4 Bxe4 12. Qd2 Bg6 13. a3 Nd7 14. 0-0 Nf6 15. Nxd5 Qd8 16. Nxe7+ Qxe7 17. Bd6 Qb7 18. Bxf8 Rxf8 19. Ne5 Rd8 20. Qa5 Re8 21. Qb4 Nd5 22. Qb3 a5 23. a4 b4 24. Nc4 Ra8 25. Nd6 Qe7 26. e4 Nf4 27. Kh2 Qg5 28. Qg3 Qh6 29. Qf3 Bh5 30. g4 Bg6 31. Rh1 e5 32. dxe5 Qg5 33. Nf5 Ne6 34. Rhd1 h5 35. h4 Qxg4 36. Qxg4 hxg4 37. Ne7+ Kh7 38. Nxc6 Bxe4 39. Rd6 Nf4 40. Rc4 Bxc6 41. Rxf4 Bxa4 42. Rxf7 Bb3 43. Rf4 Bg8 44. c6 b3 45. Ra4 1-0

[Event "Imperatriz LMX Maranhense 26th"]
[Site "Imperatriz"]
[Date "2018.07.15"]
[Round "4.4"]
[White "Melo, Wladmir Ferreira"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1857"]
[PlyCount "149"]
[EventDate "2018.07.26"]
[EventType "swiss"]
[EventRounds "5"]
[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 Qc7 6. Bd3 Nge7 7. 0-0 c4 8. Bc2 Ng6 9. Ng5 h6 10. Nh3 Be7 11. Qh5 Nf8 12. Qg4 g5 13. f4 h5 14. Qg3 g4 15. Ng5 f5 16. exf6 Bxf6 17. Re1 Bxg5 18. fxg5 Qxg3 19. hxg3 Ne7 20. Nd2 Kf7 21. Nf1 Nfg6 22. Ne3 Bd7 23. Rf1+ Kg7 24. Bd2 Raf8 25. Rf2 Rxf2 26. Kxf2 Rf8+ 27. Ke2 Nc8 28. Rh1 Rh8 29. Bxg6 Kxg6 30. Nxg4 Be8 31. Ne5+ Kg7 32. Bf4 Ne7 33. Nf3 Rh7 34. Be5+ Kg8 35. Bf6 Nf5 36. Kf2 Nd6 37. Ke3 Ne4 38. Kf4 Nf2 39. Rf1 Nd3+ 40. Ke3 Nxb2 41. Ne5 Nd3 42. g6 Rc7 43. g7 Nxe5 44. Bxe5 Rf7 45. Rf4 Rxf4 46. Kxf4 b5 47. g4 hxg4 48. Kxg4 b4 49. cxb4 c3 50. Kg5 c2 51. Bf4 Kxg7 52. g4 a6 53. Bc1 Bg6 54. Kf4 Bd3 55. Ke5 Kf7 56. Kd6 Bb5 57. g5 Bd3 58. a4 Be2 59. Kc6 Kg6 60. b5 axb5 61. axb5 Kf5 62. b6 Ba6 63. b7 Bxb7+ 64. Kxb7 e5 65. dxe5 Kxe5 66. Kc6 d4 67. Kc5 d3 68. Kc4 Kf5 69. Kxd3 Kg6 70. Ke4 Kg7 71. Kf5 Kf7 72. g6+ Kg8 73. Kg5 Kg7 74. Kh5 Kg8 75. Kh6 1-0

[Event "Imperatriz LMX Maranhense 26th"]
[Site "Imperatriz"]
[Date "2018.07.14"]
[Round "2.3"]
[White "Da Silva, Osiel Lavor"]
[Black "De S Oliveira, Francinato Meneze"]
[Result "0-1"]
[ECO "A04"]
[BlackElo "2022"]
[PlyCount "58"]
[EventDate "2018.07.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 f5 2. b3 Nf6 3. Bb2 e6 4. e3 Be7 5. Be2 c6 6. d3 d5 7. Nbd2 Nbd7 8. c4 0-0 9. Qc2 b6 10. 0-0 h6 11. Nd4 Nb8 12. cxd5 cxd5 13. N2f3 Bd6 14. Nb5 Bc5 15. b4 Bd6 16. Nxd6 Qxd6 17. a3 Nc6 18. b5 Ne7 19. Rfc1 Ng6 20. Nd4 e5 21. Nc6 Bd7 22. d4 e4 23. Nb4 Rac8 24. Qb3 Kh7 25. h3 f4 26. f3 fxe3 27. fxe4 Qg3 28. Rf1 Bxh3 29. Bf3 Ng4 0-1

[Event "Imperatriz LMX Maranhense 26th"]
[Site "Imperatriz"]
[Date "2018.07.14"]
[Round "3.6"]
[White "Lopes Pereira, Eder"]
[Black "Da Silva, Osiel Lavor"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "1809"]
[PlyCount "100"]
[EventDate "2018.07.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. 0-0 c5 5. d3 Nc6 6. Nbd2 Bd6 7. b3 e5 8. c4 d4 9. Ng5 Bd7 10. Nge4 Nxe4 11. Nxe4 Be7 12. e3 0-0 13. f4 f5 14. Nf2 exf4 15. exf4 Rf6 16. Ba3 Rh6 17. g4 fxg4 18. Nxg4 Bxg4 19. Qxg4 Rg6 20. Qh5 Qa5 21. Bc1 Qc3 22. Rb1 Qc2 23. Qd5+ Kh8 24. Ba3 Qxd3 25. Kh1 Rd8 26. Qh5 Rh6 27. Qf7 Rf8 28. Qd5 Qg3 29. h3 Bd6 30. Rf3 Qg4 31. Rbf1 Qf5 32. Qxf5 Rxf5 33. Re1 Rf8 34. Bc1 Rhf6 35. Ref1 Ne7 36. Kg1 Nf5 37. Rd3 b6 38. Kf2 Nh4 39. Kg3 Nxg2 40. Kxg2 Bxf4 41. Bxf4 Rxf4 42. Re1 Rf2+ 43. Kg3 Rxa2 44. Re7 h6 45. Kh4 Rg2 46. Re4 Rf5 47. b4 g6 48. Re8+ Kg7 49. Re7+ Kf8 50. Re5 Rf4# 0-1

[Event "Imperatriz LMX Maranhense 12th"]
[Site "Imperatriz"]
[Date "2016.09.25"]
[Round "4.11"]
[White "Da Rocha, Emerson Tavares"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "E20"]
[PlyCount "43"]
[EventDate "2016.09.24"]
[EventType "swiss"]
[EventRounds "5"]
[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. Nf3 Be7 4. Nc3 0-0 5. e4 c6 6. e5 Nh5 7. Be2 f5 8. exf6 Bxf6 9. 0-0 Nf4 10. Bxf4 Bg5 11. Be5 d6 12. Nxg5 Qxg5 13. Bxd6 Nd7 14. Bd3 Qf6 15. Bc2 Nb6 16. Bxf8 Qxf8 17. Qd3 Nd7 18. d5 exd5 19. cxd5 cxd5 20. Nxd5 Ne5 21. Qe4 Nf7 22. Qxh7# 1-0

[Event "Imperatriz LMX Maranhense 12th"]
[Site "Imperatriz"]
[Date "2016.09.25"]
[Round "5.11"]
[White "Da Silva, Osiel Lavor"]
[Black "Gadelha Junior, Antonio Edson"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "83"]
[EventDate "2016.09.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nd7 3. f4 b6 4. Nf3 Bb7 5. Bd3 e6 6. Nc3 c5 7. 0-0 Ne7 8. Be3 Nc6 9. d5 exd5 10. exd5 Nb4 11. Bb5 Ba6 12. Re1 Be7 13. Bxd7+ Qxd7 14. a3 Nxd5 15. Nxd5 0-0 16. Bf2 Rfe8 17. Qd2 Bb7 18. Rxe7 Rxe7 19. Nxe7+ Qxe7 20. Re1 Qf6 21. Ng5 d5 22. Re5 Qc6 23. Qd3 g6 24. Re7 d4 25. Qh3 Kf8 26. Rxf7+ Ke8 27. Rxh7 Bc8 28. Rh8+ Ke7 29. Qh7+ Kd6 30. Qxg6+ Kc7 31. Rh7+ Bd7 32. Qf7 Re8 33. Qxe8 d3 34. cxd3 Qa4 35. Qe5+ Kb7 36. Qd5+ Ka6 37. Qc4+ Bb5 38. Qxa4+ Bxa4 39. d4 c4 40. Ne6 Bc2 41. Rc7 b5 42. Nc5+ 1-0

[Event "Imperatriz LMX Maranhense 12th"]
[Site "Imperatriz"]
[Date "2016.09.24"]
[Round "1.4"]
[White "Da Silva, Osiel Lavor"]
[Black "De Sousa, Werlles Milhomem"]
[Result "0-1"]
[ECO "B77"]
[BlackElo "1988"]
[PlyCount "142"]
[EventDate "2016.09.24"]
[EventType "swiss"]
[EventRounds "5"]
[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 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. 0-0 d6 9. f3 Bd7 10. Qd2 Rc8 11. Bb3 Re8 12. Nde2 Ne5 13. Bxa7 Nc4 14. Bxc4 Rxc4 15. Be3 Qc7 16. Nf4 Qa5 17. a3 Rec8 18. Rac1 Be6 19. Bd4 Nxe4 20. Nxe4 Qxd2 21. Nxd2 Rxd4 22. Nxe6 Rxd2 23. Nxg7 Kxg7 24. Rf2 Rd5 25. Re2 Kf6 26. Kf2 Rb5 27. c3 d5 28. Rce1 e6 29. f4 Rc4 30. g3 h5 31. h4 Rb3 32. Rd1 Kf5 33. Re5+ Kf6 34. Re2 Re4 35. Rxe4 dxe4 36. Rd2 Kf5 37. a4 Kg4 38. Kg2 Kf5 39. Kf2 f6 40. Ke3 e5 41. fxe5 Kxe5 42. Rd4 Rxb2 43. Rxe4+ Kf5 44. Rb4 Rc2 45. Rc4 Rc1 46. Kf3 Ke5 47. Rc7 Kd6 48. Rxb7 Rxc3+ 49. Kg2 Ra3 50. Rb6+ Ke5 51. Rb5+ Kd4 52. Rb6 Ke5 53. Rb5+ Ke4 54. Rb6 Ra2+ 55. Kh3 Ke5 56. Rb5+ Kd4 57. Rb6 Rf2 58. Rb5 Kc4 59. g4 Rf3+ 60. Kg2 hxg4 61. h5 gxh5 62. Rxh5 f5 63. Rh8 Kb4 64. Ra8 Kc5 65. a5 Kb5 66. a6 Kb6 67. Kh2 f4 68. Kg2 Rd3 69. Kf1 g3 70. Kg2 Rd2+ 71. Kg1 f3 0-1

[Event "Imperatriz LMX Maranhense 12th"]
[Site "Imperatriz"]
[Date "2016.09.24"]
[Round "3.7"]
[White "Da Silva, Osiel Lavor"]
[Black "Silva, Janio Santos"]
[Result "0-1"]
[ECO "A08"]
[BlackElo "1910"]
[PlyCount "64"]
[EventDate "2016.09.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. 0-0 Nf6 5. d3 d5 6. c3 0-0 7. Nbd2 Nc6 8. Qc2 e5 9. e4 d4 10. Nc4 Qe7 11. a4 Bg4 12. h3 Bd7 13. Nh2 Rad8 14. f4 Nh5 15. Qf2 exf4 16. Bxf4 Nxf4 17. Qxf4 dxc3 18. bxc3 Bxc3 19. Rab1 b6 20. Ng4 Bxg4 21. hxg4 Rxd3 22. Rbd1 Rfd8 23. Rb1 Nd4 24. Qh6 Ne2+ 25. Kh2 Nxg3 26. Rf3 Ne2 27. Rf2 Be5+ 28. Kh1 Ng3+ 29. Kg1 Bd4 30. a5 Bxf2+ 31. Kxf2 Qf6+ 32. Kg1 Qd4+ 0-1

[Event "Imperatriz LMX Maranhense 12th"]
[Site "Imperatriz"]
[Date "2016.09.24"]
[Round "2.11"]
[White "Silva, Emile Pinheiro"]
[Black "Da Silva, Osiel Lavor"]
[Result "0-1"]
[ECO "A45"]
[PlyCount "32"]
[EventDate "2016.09.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. e4 Nxe4 3. Nc3 Nxc3 4. bxc3 d5 5. Nf3 e6 6. Be2 c5 7. dxc5 Bxc5 8. 0-0 0-0 9. Bb2 Nd7 10. c4 Nf6 11. cxd5 Nxd5 12. a4 b6 13. Re1 Bb7 14. Ng5 Qxg5 15. Qd2 Ne3 16. f4 Qxg2# 0-1

[Event "Luiz Rego Memorial"]
[Site "Teresina"]
[Date "2012.03.18"]
[Round "6"]
[White "Bastos, Werton Alvarenga"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "2038"]
[BlackElo "1881"]
[PlyCount "71"]
[EventDate "2012.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nc6 3. Bg2 Nf6 4. Nc3 d6 5. d3 Bd7 6. Rb1 Rb8 7. b4 g6 8. Bg5 Bg7 9. Nd5 h6 10. Bxf6 Bxf6 11. Nxf6+ Qxf6 12. b5 Nd4 13. e3 Ne6 14. Ne2 Ng5 15. Nc3 0-0 16. 0-0 c6 17. h4 Nh3+ 18. Kh2 Qe6 19. Qf3 g5 20. g4 Nxf2 21. Rxf2 Qxg4 22. Qxg4 Bxg4 23. hxg5 hxg5 24. bxc6 bxc6 25. Bxc6 Rxb1 26. Nxb1 f5 27. Nc3 Kg7 28. Bf3 Rh8+ 29. Kg3 Rh3+ 30. Kg2 Kg6 31. Bxg4 fxg4 32. Nd5 Kg7 33. Rf6 Rxe3 34. Nxe3 Kxf6 35. Nxg4+ Kf5 36. Kg3 1-0

[Event "Luiz Rego Memorial"]
[Site "Teresina"]
[Date "2012.03.17"]
[Round "4"]
[White "Da Silva, Osiel Lavor"]
[Black "Rezende, Guilherme Vilela"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "1881"]
[BlackElo "2039"]
[PlyCount "40"]
[EventDate "2012.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Be2 b5 6. Be3 Bb7 7. f3 Nf6 8. 0-0 Be7 9. Nd2 Qc7 10. b3 0-0 11. Bd3 d5 12. exd5 Nxd5 13. Bf2 Bd6 14. h3 Nd7 15. Rc1 Bf4 16. Rb1 Ne3 17. Bxe3 Bxe3+ 18. Kh1 Nf6 19. Qe2 Qf4 20. c3 Nh5 0-1

[Event "Luiz Rego Memorial"]
[Site "Teresina"]
[Date "2012.03.17"]
[Round "3"]
[White "Luz, Edmundo Reis"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "C17"]
[WhiteElo "2134"]
[BlackElo "1881"]
[PlyCount "39"]
[EventDate "2012.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 a6 6. a3 cxd4 7. axb4 dxc3 8. Bxc3 Ne7 9. Nf3 Bd7 10. b5 a5 11. Bd3 b6 12. 0-0 0-0 13. Bxh7+ Kxh7 14. Ng5+ Kg6 15. Qg4 f5 16. Qg3 f4 17. Qg4 Nf5 18. Nxe6+ Kh7 19. Nxd8 Rxd8 20. e6 1-0

[Event "Luiz Rego Memorial"]
[Site "Teresina"]
[Date "2012.03.16"]
[Round "2"]
[White "Da Silva, Osiel Lavor"]
[Black "Abreu, Nilton Silva"]
[Result "1-0"]
[ECO "C34"]
[WhiteElo "1881"]
[BlackElo "2073"]
[PlyCount "67"]
[EventDate "2012.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 exf4 4. Nf3 Bb4 5. e5 Bxc3 6. dxc3 Nh5 7. Be2 0-0 8. 0-0 g6 9. Nd4 Ng7 10. Bxf4 Nc6 11. Bf3 Qe7 12. Qe2 Qc5 13. Bxc6 dxc6 14. Qf2 Be6 15. Nxe6 Qxf2+ 16. Kxf2 Nxe6 17. Bg3 Rad8 18. Rad1 Rxd1 19. Rxd1 Rd8 20. Rxd8+ Nxd8 21. Bh4 Ne6 22. Bf6 Kf8 23. Kf3 Ke8 24. g4 Kd7 25. h4 Nc5 26. Kf4 Ke6 27. h5 Na4 28. Kg5 Nb6 29. Kh6 Nd7 30. Kxh7 gxh5 31. gxh5 Nxf6+ 32. exf6 Kxf6 33. h6 c5 34. Kg8 1-0

[Event "Luiz Rego Memorial"]
[Site "Teresina"]
[Date "2012.03.16"]
[Round "1"]
[White "Sousa, Renan Sampaio Ribei"]
[Black "Da Silva, Osiel Lavor"]
[Result "0-1"]
[ECO "A40"]
[BlackElo "1881"]
[PlyCount "60"]
[EventDate "2012.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e3 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Nf3 Bc5 6. c3 0-0 7. Bd3 d5 8. 0-0 Bg4 9. g3 Qe7 10. Re1 Rad8 11. b4 Bb6 12. Na3 Ne4 13. Rf1 Qf6 14. Be2 Nxc3 15. Bb2 Nxe2+ 16. Qxe2 Qxf3 17. Qxf3 Bxf3 18. Rab1 f6 19. b5 Ne5 20. Bxe5 fxe5 21. Rfe1 Bc5 22. Nc2 Rf7 23. Rec1 Rdf8 24. Ne1 Be4 25. Nc2 Rxf2 26. Rf1 Rg2+ 27. Kh1 Rxc2+ 28. Kg1 Rg2+ 29. Kh1 Rxg3+ 30. Rf3 Bxf3# 0-1

[Event "Maranhense-ch final"]
[Site "Sao Luis"]
[Date "2011.09.11"]
[Round "9"]
[White "Da Silva, Osiel Lavor"]
[Black "Lopes Silva, Luiz Eduardo"]
[Result "0-1"]
[ECO "B09"]
[BlackElo "1988"]
[PlyCount "34"]
[EventDate "2011.09.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 c6 7. 0-0 Nbd7 8. e5 dxe5 9. fxe5 Nd5 10. Nxd5 cxd5 11. Ng5 Qb6 12. Nxh7 Kxh7 13. Rxf7 Rxf7 14. Qh5+ Kg8 15. Bxg6 Qxd4+ 16. Be3 Qxe3+ 17. Kh1 Qf4 0-1

[Event "Maranhense-ch final"]
[Site "Sao Luis"]
[Date "2011.09.10"]
[Round "7"]
[White "Da Silva, Osiel Lavor"]
[Black "Leitao, Nicolau Daulibe"]
[Result "0-1"]
[ECO "B47"]
[BlackElo "2147"]
[PlyCount "40"]
[EventDate "2011.09.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 a6 6. Be2 Nf6 7. 0-0 Qc7 8. Kh1 Nxd4 9. Qxd4 Bc5 10. Qd3 b5 11. f4 Bb7 12. e5 Nd5 13. Nxd5 Bxd5 14. Qg3 g6 15. c3 h5 16. h4 Qb7 17. Bf3 Bxf3 18. Rxf3 Qe4 19. Rd3 Bf2 20. Qf3 Qe1+ 0-1

[Event "Maranhense-ch final"]
[Site "Sao Luis"]
[Date "2011.09.10"]
[Round "8"]
[White "Santos, Roberto Carlos"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "2138"]
[PlyCount "83"]
[EventDate "2011.09.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 dxe4 6. f3 exf3 7. Nxf3 Nf6 8. Bd3 b6 9. 0-0 0-0 10. Bg5 h6 11. Bh4 Ba6 12. Ne5 Bxd3 13. Qxd3 g5 14. Rxf6 Qxf6 15. Rf1 Qg7 16. Qe4 Na6 17. Bg3 f5 18. Qb7 f4 19. Be1 Nc5 20. Qc6 Rad8 21. Qf3 Rd5 22. Nc6 Na4 23. c4 Rdf5 24. Qb3 b5 25. cxb5 Nb6 26. Qxe6+ Kh7 27. Bb4 Qf7 28. Qe4 Re8 29. Ne5 Nc4 30. g4 Ne3 31. gxf5 Nxf1 32. f6+ Kg8 33. Be7 Rxe7 34. fxe7 Qxe7 35. Qg6+ Qg7 36. Kxf1 Qxg6 37. Nxg6 Kg7 38. Ne7 Kf6 39. Nd5+ Kf5 40. Nxc7 g4 41. d5 Ke5 42. c4 1-0

[Event "Maranhense-ch final"]
[Site "Sao Luis"]
[Date "2011.09.09"]
[Round "5"]
[White "Da Silva, Osiel Lavor"]
[Black "Abreu, Nilton Silva"]
[Result "0-1"]
[ECO "C54"]
[BlackElo "2066"]
[PlyCount "80"]
[EventDate "2011.09.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. 0-0 Bxc3 9. bxc3 d5 10. Bb3 0-0 11. Qd3 Bf5 12. Qe3 Re8 13. Re1 Nf6 14. Qg5 Rxe1+ 15. Nxe1 Bg6 16. f3 h6 17. Qh4 Qe7 18. a4 Re8 19. Bf4 Na5 20. Ba2 c6 21. Be5 Nd7 22. Qxe7 Rxe7 23. Bf4 Re6 24. Kf2 Nb6 25. Bb8 a6 26. Bc7 Nbc4 27. Rc1 Kf8 28. g4 Ke8 29. Ng2 Kd7 30. Bg3 Nb2 31. Nf4 Nd3+ 32. Nxd3 Bxd3 33. Bb1 Re2+ 34. Kg1 Bxb1 35. Rxb1 Ra2 36. Rb4 Kc8 37. Be1 Nc4 38. Bf2 Rb2 39. Kg2 a5 40. Rxb2 Nxb2 0-1

[Event "Maranhense-ch final"]
[Site "Sao Luis"]
[Date "2011.09.09"]
[Round "6"]
[White "Pereira, Jefferson Luis"]
[Black "Da Silva, Osiel Lavor"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "52"]
[EventDate "2011.09.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e6 2. c4 d5 3. exd5 exd5 4. d4 Nc6 5. Be3 Nf6 6. Nf3 Bg4 7. Be2 dxc4 8. 0-0 Bd6 9. Bxc4 0-0 10. Nc3 Qd7 11. Nb5 a6 12. Nxd6 Qxd6 13. a3 Rad8 14. Be2 Nd5 15. Qd2 Rfe8 16. Rad1 h6 17. Ne1 Bxe2 18. Qxe2 Qg6 19. Qf3 Re4 20. Nd3 Rde8 21. Rfe1 b6 22. Kf1 R8e6 23. Rc1 Nxe3+ 24. Rxe3 Rxe3 25. fxe3 Qxd3+ 26. Kg1 Qd2 0-1

[Event "Maranhense-ch final"]
[Site "Sao Luis"]
[Date "2011.09.08"]
[Round "3"]
[White "Da Silva, Osiel Lavor"]
[Black "Damous, Felipe Soares"]
[Result "1/2-1/2"]
[ECO "E54"]
[BlackElo "2057"]
[PlyCount "96"]
[EventDate "2011.09.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. Bg5 0-0 8. Bd3 dxc4 9. Bxc4 b6 10. 0-0 Bxc3 11. bxc3 Bb7 12. Ne5 h6 13. Bh4 Nbd7 14. Nxd7 Qxd7 15. Bxf6 gxf6 16. Be2 Kh7 17. Bf3 Rg8 18. Re1 Rad8 19. Qe2 Bxf3 20. Qxf3 Qd5 21. Re3 f5 22. Qh3 Rg6 23. Qf3 Rgg8 24. g3 Qxf3 25. Rxf3 Rc8 26. Rc1 Rgd8 27. Rd1 Rc4 28. Rfd3 Rdc8 29. Rc1 b5 30. a3 a5 31. d5 exd5 32. Rxd5 R8c5 33. Rxc5 Rxc5 34. Rb1 Kg6 35. f4 Rxc3 36. Rxb5 Rxa3 37. Rb6+ f6 38. Kg2 Ra2+ 39. Kh3 a4 40. Ra6 a3 41. Ra7 h5 42. Ra5 Ra1 43. Ra7 a2 44. Kh4 Kh6 45. Kh3 Kg6 46. Kh4 Kh6 47. Kh3 Kg6 48. Kh4 Kh6 1/2-1/2

[Event "Maranhense-ch final"]
[Site "Sao Luis"]
[Date "2011.09.08"]
[Round "4"]
[White "Guara Neto, Argemiro Braga"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "C19"]
[WhiteElo "2079"]
[PlyCount "73"]
[EventDate "2011.09.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Bd3 Qc7 8. Nf3 Bd7 9. 0-0 c4 10. Be2 Ba4 11. Bg5 h6 12. Bd2 Nd7 13. Rb1 0-0-0 14. Rb4 b5 15. Qb1 a6 16. Be3 g5 17. Nd2 Rdg8 18. Qa2 f5 19. exf6 Nxf6 20. Rfb1 h5 21. Nxc4 dxc4 22. Bxc4 Ned5 23. Rxa4 bxa4 24. Bxa6+ Kd8 25. Bd2 h4 26. c4 Nf4 27. Rb7 Qc6 28. Ba5+ Ke8 29. Bb5 Ne2+ 30. Kf1 Nxd4 31. Bxc6+ Nxc6 32. Qb2 Nd7 33. Rxd7 Kxd7 34. Qb7+ Ke8 35. Qxc6+ Kf7 36. Qd7+ Kg6 37. Qxe6+ 1-0

[Event "Maranhense-ch final"]
[Site "Sao Luis"]
[Date "2011.09.07"]
[Round "1"]
[White "Luz, Edmundo Reis"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "C17"]
[WhiteElo "2134"]
[PlyCount "31"]
[EventDate "2011.09.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Bd7 6. f4 Nh6 7. Nb5 Nf5 8. Bxb4 cxb4 9. Nf3 0-0 10. Qd2 Qb6 11. g4 a6 12. gxf5 Bxb5 13. f6 Bxf1 14. Rxf1 Kh8 15. fxg7+ Kxg7 16. Rg1+ 1-0

[Event "BRA-ch Norte"]
[Site "Belem"]
[Date "2011.08.07"]
[Round "6.12"]
[White "Amorim, Genaro Jose Melo De"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "C18"]
[PlyCount "37"]
[EventDate "2011.08.05"]
[EventType "swiss"]
[EventRounds "6"]
[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. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 Bd7 12. Qd3 dxc3 13. Nxc3 a6 14. Rb1 0-0-0 15. Qxa6 Nb8 16. Qd3 Nf5 17. Qd2 Qa5 18. Nb5 Qa6 19. Qc3+ 1-0

[Event "BRA-ch Norte"]
[Site "Belem"]
[Date "2011.08.07"]
[Round "5.14"]
[White "Da Silva, Osiel Lavor"]
[Black "Assuncao, Darlane Brito"]
[Result "1-0"]
[ECO "B09"]
[PlyCount "49"]
[EventDate "2011.08.05"]
[EventType "swiss"]
[EventRounds "6"]
[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. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Nbd7 7. 0-0 c6 8. e5 dxe5 9. dxe5 Nd5 10. Ne4 Qb6+ 11. Kh1 Nc5 12. Nxc5 Qxc5 13. a3 e6 14. Qe2 b5 15. Ng5 a6 16. Bd2 Qb6 17. h4 Bb7 18. h5 Ne7 19. hxg6 Nxg6 20. Qh5 h6 21. Nxf7 Rxf7 22. Qxg6 c5 23. f5 Qc7 24. fxe6 Rxf1+ 25. Rxf1 1-0

[Event "BRA-ch Norte"]
[Site "Belem"]
[Date "2011.08.06"]
[Round "3.15"]
[White "Da Silva, Osiel Lavor"]
[Black "Semente, Marcelo Duarte"]
[Result "0-1"]
[ECO "B34"]
[PlyCount "72"]
[EventDate "2011.08.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Nc3 Nc6 6. Be3 e6 7. Qd2 Nge7 8. f4 e5 9. Ndb5 0-0 10. Nd6 a6 11. 0-0-0 Qc7 12. g4 Nd4 13. fxe5 Nf3 14. Qg2 Nxe5 15. Bg5 N7c6 16. Nd5 Qa5 17. Kb1 Nb4 18. Ne7+ Kh8 19. a3 Nbc6 20. Nexc8 Raxc8 21. Nxc8 Rxc8 22. Bd2 Qb6 23. Bc3 Na5 24. Qg3 Rxc3 25. Qxc3 Nec6 26. Qxg7+ Kxg7 27. Rxd7 Qf2 28. Bd3 Ne5 29. Rf1 Qxh2 30. Rd5 Nac6 31. g5 Qg2 32. Rd1 Qxg5 33. c3 Qg4 34. Bc2 Nc4 35. Rd7 Ne3 36. R1d2 Nxc2 0-1

[Event "BRA-ch Norte"]
[Site "Belem"]
[Date "2011.08.06"]
[Round "4.17"]
[White "De Sa, Wagner Nunes"]
[Black "Da Silva, Osiel Lavor"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "52"]
[EventDate "2011.08.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. b3 Nc6 5. Bb5 Bd7 6. Bb2 Nh6 7. d4 Qa5+ 8. Nc3 cxd4 9. Nxd4 Nxe5 10. Bxd7+ Nxd7 11. 0-0 Be7 12. Qe2 0-0 13. a3 e5 14. b4 Qb6 15. Nxd5 Qd6 16. Nxe7+ Qxe7 17. Rfe1 Rae8 18. Nf3 f6 19. Bc1 Nf5 20. Qe4 Nd6 21. Qd5+ Qe6 22. Rd1 Qxd5 23. Rxd5 Re6 24. c4 Nb6 25. Rxd6 Rxd6 26. c5 Rd1+ 0-1

[Event "BRA-ch Norte"]
[Site "Belem"]
[Date "2011.08.05"]
[Round "2.12"]
[White "Camargo, Lucio Miranda"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "D11"]
[PlyCount "81"]
[EventDate "2011.08.05"]
[EventType "swiss"]
[EventRounds "6"]
[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. Nf3 Nf6 4. g3 dxc4 5. a4 e6 6. Bg2 Bd6 7. Qc2 0-0 8. e4 Bc7 9. 0-0 h6 10. Na3 Na6 11. Rd1 Nb4 12. Qxc4 a5 13. Qe2 Rb8 14. Ne5 b5 15. axb5 cxb5 16. Bd2 Qe8 17. Ng4 Nxg4 18. Qxg4 e5 19. Qh5 Qe6 20. d5 Qf6 21. Rac1 Bb6 22. Rf1 Bd7 23. Bh3 Nd3 24. Bxd7 Nxc1 25. Bxc1 b4 26. Nc4 Bc7 27. Be3 Rfd8 28. Ba4 Qe7 29. b3 Ra8 30. Bb6 Bxb6 31. Nxb6 Ra6 32. Nc4 f6 33. Ne3 Qf7 34. Qxf7+ Kxf7 35. Rc1 Ra7 36. Rc5 Rd6 37. Nc4 Rd8 38. d6 Ke6 39. Rc6 Kf7 40. Rc7+ Rxc7 41. dxc7 1-0

[Event "BRA-ch Norte"]
[Site "Belem"]
[Date "2011.08.05"]
[Round "1.17"]
[White "Da Silva, Osiel Lavor"]
[Black "Da Costa, Rafael Felix Ribeir"]
[Result "0-1"]
[ECO "C11"]
[PlyCount "78"]
[EventDate "2011.08.05"]
[EventType "swiss"]
[EventRounds "6"]
[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. Nc3 Nf6 4. e5 Nfd7 5. f4 a6 6. Nf3 c5 7. Be3 Nc6 8. Na4 cxd4 9. Nxd4 Be7 10. c3 Qc7 11. Rc1 b5 12. c4 Nxd4 13. Bxd4 bxa4 14. cxd5 Qa5+ 15. Bc3 Qxd5 16. Qxd5 exd5 17. Bd4 0-0 18. Bd3 Bb4+ 19. Ke2 Ba5 20. h3 Bb6 21. Ke3 Rb8 22. Rc2 Bb7 23. Rhc1 Rfc8 24. g4 Rxc2 25. Rxc2 Rc8 26. Rxc8+ Bxc8 27. f5 Nc5 28. Bc2 h6 29. b4 axb3 30. Bxb3 Bb7 31. Bc2 Kf8 32. h4 Ke7 33. g5 Nd7 34. Bd1 Nxe5 35. Bxb6 Nc4+ 36. Kd4 Nxb6 37. a3 hxg5 38. hxg5 f6 39. g6 Kd6 0-1

[Event "Maranhense-ch sf"]
[Site "Sao Luis"]
[Date "2011.02.27"]
[Round "5"]
[White "Da Silva, Osiel Lavor"]
[Black "Leitao, Jose das Chagas Jr"]
[Result "1-0"]
[ECO "B12"]
[PlyCount "101"]
[EventDate "2011.02.25"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 c6 3. f4 Qc7 4. Nf3 Bg4 5. Bc4 e6 6. e5 d5 7. Bd3 c5 8. c3 Nc6 9. Na3 a6 10. Nc2 c4 11. Be2 Nge7 12. Ne3 Bh5 13. g4 Bg6 14. Rf1 h6 15. Nh4 Be4 16. f5 g5 17. fxg6 Nxg6 18. Nxg6 Bxg6 19. Ng2 Be7 20. Bf4 Qd8 21. Qd2 Bg5 22. 0-0-0 b5 23. h4 Bxf4 24. Qxf4 Qe7 25. h5 Be4 26. Ne3 b4 27. Nxc4 bxc3 28. Nd6+ Kd7 29. Qxf7 cxb2+ 30. Kxb2 Rhb8+ 31. Kc3 Nb4 32. Qxe7+ Kxe7 33. Rf7+ Kd8 34. Rdf1 Nxa2+ 35. Kd2 Rb2+ 36. Ke1 Rab8 37. Rf8+ Kc7 38. Rxb8 Kxb8 39. Bxa6 Rb1+ 40. Kf2 Rb2+ 41. Kg3 Rb3+ 42. Kh4 Bg2 43. Rf8+ Ka7 44. g5 hxg5+ 45. Kg4 Kxa6 46. h6 Rh3 47. Kxg5 Be4 48. Ra8+ Kb6 49. Rxa2 Bh7 50. Rb2+ Ka7 51. Rb7+ 1-0

[Event "Maranhense-ch sf"]
[Site "Sao Luis"]
[Date "2011.02.27"]
[Round "4"]
[White "Lobato, Nivaldo"]
[Black "Da Silva, Osiel Lavor"]
[Result "1/2-1/2"]
[ECO "A17"]
[WhiteElo "2120"]
[PlyCount "31"]
[EventDate "2011.02.25"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. g3 Nc6 4. Bg2 b6 5. Nf3 Bb7 6. 0-0 d5 7. cxd5 Nxd5 8. d3 Be7 9. Bd2 0-0 10. Rc1 Nf6 11. Qa4 a6 12. Bf4 b5 13. Qd1 Nb4 14. a3 Nbd5 15. Nxd5 Nxd5 16. Bd2 1/2-1/2

[Event "Maranhense-ch sf"]
[Site "Sao Luis"]
[Date "2011.02.26"]
[Round "3"]
[White "Borges, Wagner da Silva"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "2215"]
[PlyCount "57"]
[EventDate "2011.02.25"]
[EventType "swiss"]
[EventRounds "5"]
[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. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 dxc3 11. f4 Bd7 12. Qd3 Na6 13. Qxc3 Qb6 14. Be3 Qc6 15. Qxc6 bxc6 16. Rb1 Bc8 17. Nd4 Kd7 18. Nb3 Nf5 19. Bf2 Kc7 20. g3 Rd8 21. g4 Nh6 22. h3 Nb8 23. Bc5 Rh8 24. Bd6+ Kd8 25. Nd4 Nxg4 26. Bxb8 Kd7 27. Kd2 Ne3 28. Bd6 Nxf1+ 29. Rbxf1 1-0

[Event "Maranhense-ch sf"]
[Site "Sao Luis"]
[Date "2011.02.25"]
[Round "1"]
[White "Da Silva, Osiel Lavor"]
[Black "Leitao, Nicolau Daulibe"]
[Result "0-1"]
[ECO "B92"]
[BlackElo "2137"]
[PlyCount "98"]
[EventDate "2011.02.25"]
[EventType "swiss"]
[EventRounds "5"]
[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. Be2 e5 7. Nb3 Be7 8. 0-0 Be6 9. Be3 b5 10. f3 0-0 11. g4 Nbd7 12. Kh1 Nb6 13. Rg1 b4 14. Bxb6 Qxb6 15. Nd5 Bxd5 16. exd5 Qb7 17. Bc4 a5 18. Qd3 a4 19. Nd2 Ra5 20. Raf1 Nxd5 21. Qe4 Qa8 22. g5 Nf4 23. Rg4 Qxe4 24. fxe4 g6 25. Nf3 Rc5 26. b3 axb3 27. axb3 Ra5 28. Rc1 Ra2 29. Rgg1 Nh3 30. Rg2 Rfa8 31. c3 Ra1 32. Rgc2 bxc3 33. Rxc3 Nf2+ 34. Kg2 Nxe4 35. Rxa1 Rxa1 36. Rc2 Nxg5 37. Nxg5 Bxg5 38. Bd5 Rc1 39. Rf2 Rc7 40. b4 Kg7 41. b5 Be3 42. Ra2 Ra7 43. Rb2 Bb6 44. Rc2 Rc7 45. Ra2 Rc8 46. Ra6 Rb8 47. Ra3 f5 48. Ra6 Kf6 49. Ra3 h5 0-1

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.15"]
[Round "7"]
[White "Camargo, Lucio Miranda"]
[Black "Da Silva, Osiel Lavor"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1800"]
[BlackElo "1886"]
[PlyCount "68"]
[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. f4 e6 2. Nf3 d5 3. e3 Nf6 4. b3 Be7 5. Bb2 0-0 6. Be2 c5 7. 0-0 Nc6 8. Qe1 Nb4 9. Na3 a6 10. c3 Nc6 11. Nc2 b5 12. Rc1 Bb7 13. h3 c4 14. Ncd4 Bc5 15. Nxc6 Bxc6 16. Ne5 Bb7 17. Bf3 Qb6 18. Qg3 Rad8 19. Rf2 Ne4 20. Bxe4 dxe4 21. Re2 f6 22. Ng4 Rd7 23. Kh1 Rd5 24. Ra1 Bd6 25. b4 Rg5 26. Qh4 Rg6 27. Qf2 f5 28. Nh2 Rh6 29. a4 Be7 30. axb5 axb5 31. Qf1 Rff6 32. g4 Rfg6 33. gxf5 exf5 34. Rg2 Bh4 0-1

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.15"]
[Round "6"]
[White "Da Silva, Osiel Lavor"]
[Black "Da Silva, Lorena Raissa Silva"]
[Result "1-0"]
[ECO "B58"]
[WhiteElo "1886"]
[BlackElo "1741"]
[PlyCount "51"]
[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 a6 6. Be2 d6 7. Be3 Bd7 8. 0-0 Rc8 9. f4 e6 10. Kh1 h5 11. Bg1 g6 12. Nf3 Nh7 13. Na4 Qe7 14. Nb6 Rb8 15. e5 d5 16. c3 g5 17. fxg5 Nxg5 18. Nxg5 Qxg5 19. Nxd7 Kxd7 20. Rxf7+ Be7 21. Bd4 Nxe5 22. Bxe5 Qxe5 23. Qa4+ b5 24. Qxa6 Qxe2 25. Qa7+ Kc8 26. Rxe7 1-0

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.14"]
[Round "4"]
[White "Cardoso Da Silva, Roberto"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1817"]
[BlackElo "1886"]
[PlyCount "69"]
[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. Bc4 d5 3. exd5 exd5 4. Qe2+ Be7 5. Bb3 Nf6 6. Nf3 0-0 7. h3 c5 8. d3 Bd6 9. 0-0 Re8 10. Qd1 Qc7 11. Bg5 c4 12. dxc4 dxc4 13. Ba4 Rd8 14. Qe2 a6 15. Bxf6 gxf6 16. c3 b5 17. Bc2 Bb7 18. Nh4 Kf8 19. Re1 Qc5 20. Nf5 Be5 21. Qh5 Rd7 22. Nd2 Ke8 23. Rad1 Nc6 24. Ne4 Rxd1 25. Rxd1 Qf8 26. Ned6+ Bxd6 27. Nxd6+ Kd7 28. Nxb7+ Kc7 29. Nc5 Ne5 30. b4 cxb3 31. Nxb3 Qg7 32. f4 Rg8 33. Be4 Qg3 34. fxe5 Qe3+ 35. Kh1 1-0

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.14"]
[Round "5"]
[White "Medeiros, Antonio Carlos Mart"]
[Black "Da Silva, Osiel Lavor"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "1810"]
[BlackElo "1886"]
[PlyCount "72"]
[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. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 a5 8. Bxc4 Bf5 9. 0-0 e6 10. Ne5 Bd6 11. f3 Qc7 12. e4 Bg6 13. g3 Nfd7 14. f4 Bxe5 15. fxe5 Bxe4 16. Qg4 Bg6 17. Bxe6 fxe6 18. Qxe6+ Kd8 19. Bg5+ Kc8 20. Rac1 Kb7 21. Bf4 Qb6 22. Rfd1 Re8 23. Qd6 Bf5 24. Kg2 Re6 25. Qc5 Nxc5 26. dxc5 Qa6 27. Rd2 Be4+ 28. Kh3 Bd5 29. b3 Bxb3 30. Re1 Bxa2 31. Rxa2 Nd7 32. Rd1 Kc7 33. Rad2 Nxc5 34. Be3 Ne4 35. Rd7+ Kb8 36. Ra7 Rh6+ 0-1

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.13"]
[Round "3"]
[White "Da Silva, Osiel Lavor"]
[Black "Rodrigues, Jordy Pires"]
[Result "0-1"]
[ECO "B04"]
[WhiteElo "1886"]
[BlackElo "1800"]
[PlyCount "52"]
[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 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. c4 Nb6 6. exd6 cxd6 7. Nc3 Bg7 8. Be3 Nc6 9. Qd2 0-0 10. Be2 Bg4 11. h3 Bxf3 12. gxf3 Rc8 13. h4 e5 14. d5 Ne7 15. h5 Nxc4 16. Bxc4 Rxc4 17. hxg6 hxg6 18. Bh6 Nf5 19. Bxg7 Kxg7 20. 0-0-0 Rd4 21. Qe2 Rxd1+ 22. Kxd1 Rh8 23. Rg1 Qb6 24. Qc2 Nd4 25. Qd3 Qxb2 26. Rf1 Rc8 0-1

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.13"]
[Round "2"]
[White "Mendes, Antonio Daniel Nobr"]
[Black "Da Silva, Osiel Lavor"]
[Result "1-0"]
[ECO "D18"]
[WhiteElo "2042"]
[BlackElo "1886"]
[PlyCount "83"]
[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. Nf3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Nbd7 8. 0-0 Bb4 9. Qb3 Qa5 10. Na2 c5 11. Nxb4 Qxb4 12. Qxb4 cxb4 13. a5 Rc8 14. b3 Ne4 15. Ra4 Nd6 16. Rxb4 0-0 17. Ba3 Nxc4 18. Rxc4 Rxc4 19. bxc4 Rc8 20. Rc1 b6 21. Nd2 bxa5 22. e4 Bg6 23. f3 f5 24. e5 Nb6 25. Kf2 f4 26. Ke2 Rd8 27. Bd6 Rc8 28. c5 Nd5 29. c6 Nb4 30. c7 Bd3+ 31. Kd1 Nd5 32. Ne4 a6 33. Nc5 Bb5 34. Nxe6 Kf7 35. Nd8+ Ke8 36. Nc6 Ne3+ 37. Ke1 Nxg2+ 38. Kf2 Bxc6 39. Rxc6 Ne3 40. e6 Nd5 41. Rc5 Nb4 42. Rf5 1-0

[Event "Belem Para op"]
[Site "Belem"]
[Date "2010.11.12"]
[Round "1"]
[White "Da Silva, Osiel Lavor"]
[Black "Moraes, Reuel Felipe de Mor"]
[Result "1-0"]
[ECO "C29"]
[WhiteElo "1886"]
[BlackElo "1703"]
[PlyCount "46"]
[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. Nc3 Nf6 3. f4 Nc6 4. fxe5 Nxe5 5. d4 Nc6 6. Bg5 Be7 7. Nf3 h6 8. Bh4 g5 9. Bg3 Bb4 10. Qd3 Bxc3+ 11. bxc3 d6 12. Be2 Nh5 13. Ne5 Nxg3 14. Nxc6 bxc6 15. Qxg3 Qe7 16. 0-0 Qxe4 17. Bh5 Be6 18. Rae1 Qd5 19. Bxf7+ Kd8 20. Rxe6 Qb5 21. c4 Qb2 22. Qe3 Kc8 23. c5 Kb7 1-0

[Event "Belem Paraense op"]
[Site "Belem"]
[Date "2009.04.10"]
[Round "2"]
[White "Da Silva, Osiel Lavor"]
[Black "Cardoso, Cicero Assuncao Jr"]
[Result "0-1"]
[ECO "B43"]
[BlackElo "1885"]
[PlyCount "74"]
[EventDate "2009.04.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. f4 Bb7 7. Bd3 Nf6 8. Qe2 Bc5 9. Nb3 Ba7 10. Be3 Bb6 11. Bxb6 Qxb6 12. g4 0-0 13. g5 Ne8 14. 0-0-0 b4 15. Na4 Qc7 16. Qg4 f5 17. gxf6 Nxf6 18. Qf3 Bc6 19. Nac5 a5 20. Rhg1 a4 21. Nd2 Qd6 22. Qe3 Ra5 23. Qg3 Ne8 24. Nxe6 Qxe6 25. Bc4 d5 26. exd5 Bxd5 27. Rde1 Qf7 28. Re5 Nc6 29. Bxd5 Rxd5 30. Re4 Nf6 31. Rc4 Nh5 32. Qf3 Nd4 33. Qg4 Nxf4 34. Re1 Rfd8 35. Re3 Nde2+ 36. Rxe2 Nxe2+ 37. Qxe2 Rxd2 0-1

[Event "Belem Paraense op"]
[Site "Belem"]
[Date "2009.04.09"]
[Round "1"]
[White "De Albuquerque, Carlos Patrick S"]
[Black "Da Silva, Osiel Lavor"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2096"]
[PlyCount "84"]
[EventDate "2009.04.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Be7 6. cxd5 cxd5 7. Bd3 Nc6 8. 0-0 0-0 9. e4 dxe4 10. Nxe4 Nd5 11. Nfg5 h6 12. Nf3 b6 13. a3 Bb7 14. Qe2 Qb8 15. Bd2 f5 16. Nc3 Nf4 17. Bxf4 Qxf4 18. Qxe6+ Kh8 19. d5 Rf6 20. Qe2 Rg6 21. g3 Bc5 22. Kh1 Qg4 23. Nh4 Nd4 24. Qxg4 Rxg4 25. Bxf5 Rxh4 26. gxh4 Nxf5 27. h5 Rf8 28. Rae1 Ba6 29. b4 Bd4 30. Ne2 Bc4 31. Nf4 Kh7 32. Rc1 Bxf1 33. Rxf1 Nd6 34. Ne6 Rxf2 35. Rg1 Be5 36. Re1 Rxh2+ 37. Kg1 Bg3 38. Re3 Nf5 39. Nf8+ Kg8 40. Re8 Kf7 41. Ra8 Ne3 42. Ne6 Ra2 0-1

