[Event "American Continental 06th"]
[Site "Sao Paulo"]
[Date "2009.08.02"]
[Round "10"]
[White "Dos Santos, Jefferson de Olivei"]
[Black "Matsuura, Everaldo"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2274"]
[BlackElo "2491"]
[PlyCount "86"]
[EventDate "2009.07.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. e4 b5 6. a4 Bb4 7. Qc2 Bb7 8. Be2 a6 9. 0-0 Nd7 10. Rd1 Ne7 11. e5 Nd5 12. Ng5 Qe7 13. Bh5 g6 14. Bf3 0-0-0 15. Nge4 f6 16. Nxd5 cxd5 17. Nxf6 Qf7 18. Nxd7 Rxd7 19. Bd2 Qe7 20. axb5 axb5 21. Ra7 Kb8 22. Rda1 Rc8 23. Bc3 Rc6 24. R7a2 Rb6 25. Rb1 Rc7 26. g3 Rcc6 27. h4 Bxc3 28. bxc3 b4 29. Rab2 b3 30. Qd2 Ra6 31. Kg2 Kc7 32. h5 g5 33. Bg4 Ra8 34. f4 gxf4 35. gxf4 Rca6 36. Kf3 Ra2 37. h6 Qh4 38. Bxe6 Qxh6 39. Bg4 Rxb2 40. Rxb2 Ra1 41. f5 Rf1+ 42. Ke2 Qh1 43. Qg5 Qg2+ 0-1

[Event "American Continental 06th"]
[Site "Sao Paulo"]
[Date "2009.07.30"]
[Round "7"]
[White "Cubas, Jose Fernando"]
[Black "Dos Santos, Jefferson de Olivei"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2454"]
[BlackElo "2274"]
[PlyCount "128"]
[EventDate "2009.07.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. g3 e6 4. Bg2 b5 5. d3 Bb7 6. Nf3 d6 7. 0-0 Be7 8. a4 b4 9. Ne2 Qc7 10. Nf4 Nf6 11. Ng5 Bd8 12. Re1 e5 13. Nd5 Nxd5 14. exd5 h6 15. Nf3 0-0 16. Nd2 Nd7 17. Nc4 Nb6 18. Ne3 a5 19. Nf5 Bc8 20. Be4 Bxf5 21. Bxf5 g6 22. Be4 Kg7 23. c3 bxc3 24. bxc3 c4 25. d4 f5 26. Bg2 e4 27. f3 exf3 28. Bxf3 Bf6 29. Re6 Rae8 30. Rb1 Rxe6 31. dxe6 d5 32. Rb5 Re8 33. Ba3 Rxe6 34. Qb1 Nxa4 35. Bxd5 Nxc3 36. Rb7 Bxd4+ 37. Kh1 Nxd5 38. Rxc7+ Nxc7 39. Qb7 Be5 40. Bb2 Bxb2 41. Qxc7+ Kf6 42. Qd8+ Kf7 43. Qc7+ Kf6 44. Qxc4 Be5 45. Qc5 Rd6 46. Qxa5 f4 47. Kg2 fxg3 48. hxg3 h5 49. Kf2 Kf5 50. Qb5 Rd4 51. Qe8 Rd2+ 52. Ke3 Rd6 53. Qf8+ Rf6 54. Qc5 Re6 55. Qd5 Kf6 56. Qd8+ Kf7 57. Qd7+ Re7 58. Qd5+ Kg7 59. Kf3 Rf7+ 60. Kg2 Rf5 61. Qe6 Rg5 62. Qe7+ Kh6 63. Qf8+ Bg7 64. Qf4 Be5 1/2-1/2

[Event "American Continental 06th"]
[Site "Sao Paulo"]
[Date "2009.07.29"]
[Round "6"]
[White "Dos Santos, Jefferson de Olivei"]
[Black "Leal, Paulo Tarcisio Garc"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2274"]
[BlackElo "2172"]
[PlyCount "89"]
[EventDate "2009.07.25"]
[EventType "swiss"]
[EventRounds "11"]
[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. f3 c6 5. Be3 Nbd7 6. Qd2 b5 7. Nge2 Nb6 8. Ng3 Qc7 9. Bh6 Bxh6 10. Qxh6 Bb7 11. Bd3 a6 12. 0-0 c5 13. d5 0-0-0 14. a4 b4 15. Nd1 a5 16. b3 Kb8 17. c3 Rdg8 18. cxb4 cxb4 19. Rc1 Qd8 20. Qe3 Nbd7 21. Ne2 Qb6 22. Nd4 Rc8 23. Bc4 Ka8 24. Kh1 Ne5 25. Nb2 g5 26. Rfd1 h6 27. Qe2 Rc5 28. Nf5 Qc7 29. Qe3 Bc8 30. Nd4 Bb7 31. Bb5 Rc8 32. Nc4 Nxc4 33. bxc4 Qb6 34. Qg1 g4 35. Nb3 gxf3 36. gxf3 Rg8 37. Qd4 e5 38. dxe6 Nxe4 39. exf7 Ng3+ 40. hxg3 Bxf3+ 41. Kg1 Rxg3+ 42. Kf2 Rg2+ 43. Kxf3 Qb7+ 44. Qd5 Rxd5 45. f8Q+ 1-0

[Event "Itau Cup 8th"]
[Site "Sao Paulo"]
[Date "2004.10.02"]
[Round "9"]
[White "Dos Santos, Jefferson de Olivei"]
[Black "Pereira, Silvio Cunha"]
[Result "1-0"]
[ECO "C81"]
[BlackElo "2252"]
[PlyCount "79"]
[EventDate "2004.09.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 102 Extra"]
[Source "ChessBase"]
[SourceDate "2004.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Bc5 10. Nbd2 Bf5 11. Nxe4 Bxe4 12. Rd1 0-0 13. c3 Bxf3 14. Qxf3 Nxe5 15. Qf5 Qf6 16. Qxf6 gxf6 17. Rxd5 Bb6 18. Bf4 Rad8 19. Bxe5 Rxd5 20. Bxc7 Bxf2+ 21. Kxf2 Rd2+ 22. Kf3 Rc8 23. Ba5 Rc5 24. g4 h5 25. h3 Rd3+ 26. Kg2 Re5 27. Rd1 Rde3 28. Rd2 hxg4 29. hxg4 Re2+ 30. Rxe2 Rxe2+ 31. Kf3 Rxb2 32. Bb6 Kg7 33. Bd4 Kg6 34. c4 Rd2 35. Be3 Rb2 36. c5 a5 37. c6 a4 38. c7 axb3 39. c8Q Rxa2 40. Qg8# 1-0

[Event "Itau Cup 8th"]
[Site "Sao Paulo"]
[Date "2004.10.01"]
[Round "8"]
[White "Olivencia, Flavio"]
[Black "Dos Santos, Jefferson de Olivei"]
[Result "1/2-1/2"]
[ECO "B53"]
[WhiteElo "2228"]
[PlyCount "94"]
[EventDate "2004.09.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 102 Extra"]
[Source "ChessBase"]
[SourceDate "2004.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nc3 Nf6 8. Bg5 e6 9. 0-0-0 Be7 10. Rhe1 0-0 11. Qd2 h6 12. Bf4 e5 13. Bg3 b5 14. Kb1 b4 15. Nd5 Bxd5 16. exd5 a5 17. Nxe5 dxe5 18. d6 Qxd6 19. Qxd6 Bxd6 20. Rxd6 e4 21. Red1 Rfe8 22. Bf4 Ng4 23. R1d2 g5 24. h3 gxf4 25. hxg4 e3 26. fxe3 fxe3 27. Re2 Re4 28. Rxh6 Rae8 29. Rh3 Rxg4 30. Rhxe3 Rxe3 31. Rxe3 Rxg2 32. a3 Rg4 33. Re5 bxa3 34. Rxa5 axb2 35. Kxb2 Kf8 36. Kb3 Ke7 37. c4 Kd8 38. Kb4 Kc8 39. Rf5 Rg7 40. Kb5 Kc7 41. Rf6 Rg5+ 42. c5 Rg6 43. Rxf7+ Kc8 44. Rh7 Rf6 45. Ra7 Rh6 46. Re7 Rg6 47. Kc4 Rh6 1/2-1/2

[Event "Itau Cup 8th"]
[Site "Sao Paulo"]
[Date "2004.09.27"]
[Round "4"]
[White "Sega, Carlos Alberto"]
[Black "Dos Santos, Jefferson de Olivei"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2322"]
[PlyCount "57"]
[EventDate "2004.09.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 102 Extra"]
[Source "ChessBase"]
[SourceDate "2004.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.03"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. e4 d6 6. Nge2 Nc6 7. 0-0 e5 8. d3 Nh5 9. h3 f5 10. exf5 gxf5 11. Nd5 Be6 12. Kh2 Kh8 13. f4 Rg8 14. Be3 Bh6 15. Qd2 Rg6 16. Rg1 Qd7 17. Bf3 Nf6 18. d4 e4 19. Nxf6 Rxf6 20. d5 exf3 21. dxc6 Qf7 22. cxb7 Rb8 23. Nd4 Bxc4 24. Nc6 Rxb7 25. Nd8 Qd5 26. Nxb7 Qxd2+ 27. Bxd2 Re6 28. Bc3+ Kg8 29. Rge1 1-0

[Event "Itau Cup 8th"]
[Site "Sao Paulo"]
[Date "2004.09.26"]
[Round "3"]
[White "Dos Santos, Jefferson de Olivei"]
[Black "Da Silva, Alessandro Rodrigue"]
[Result "1-0"]
[ECO "B78"]
[BlackElo "2179"]
[PlyCount "85"]
[EventDate "2004.09.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 102 Extra"]
[Source "ChessBase"]
[SourceDate "2004.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. Bc4 Bd7 10. 0-0-0 Rb8 11. h4 b5 12. Ndxb5 Ne5 13. Be2 Qa5 14. Nd4 Qb4 15. Nb3 a5 16. Nd5 Nxd5 17. exd5 Qb7 18. Qxa5 Ra8 19. Qb6 Qc8 20. Kb1 Nc4 21. Bxc4 Qxc4 22. Rd4 Qc8 23. Rb4 h5 24. Qb7 Bf5 25. Qxc8 Rfxc8 26. Rc1 Ra6 27. g4 hxg4 28. fxg4 Bd7 29. Bd4 Bh6 30. g5 Bf8 31. a3 Bf5 32. Bc3 Rxa3 33. bxa3 Rxc3 34. a4 Bg7 35. a5 Rc8 36. a6 Bc3 37. Rb7 Ra8 38. a7 Kg7 39. Rxe7 Be5 40. Rf1 Rc8 41. Rf2 Ra8 42. h5 Kf8 43. Rb7 1-0

[Event "Sao Paulo CXSP-ch U20"]
[Site "Sao Paulo"]
[Date "2004.??.??"]
[Round "3"]
[White "Dos Santos, Jefferson de Olivei"]
[Black "Martinez, Janine"]
[Result "0-1"]
[ECO "C07"]
[BlackElo "1855"]
[PlyCount "166"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. dxc5 Bxc5 6. Ngf3 Nf6 7. Bc4 Qd8 8. 0-0 0-0 9. Nb3 Bb6 10. Bg5 Qxd1 11. Raxd1 Ne4 12. Bf4 Nc6 13. Bd3 Nf6 14. Bb5 Nd5 15. Bd6 Rd8 16. Bxc6 bxc6 17. Bc5 Ba6 18. Rfe1 Bc4 19. Bxb6 axb6 20. Ne5 Bxb3 21. axb3 c5 22. g3 f6 23. Nd3 Kf7 24. Ra1 g5 25. Ra3 e5 26. Rea1 Rxa3 27. Rxa3 e4 28. Ra7+ Kg6 29. Ne1 e3 30. Rb7 Rd6 31. Kf1 exf2 32. Kxf2 Nb4 33. Ke2 h5 34. Ng2 Nxc2 35. Kf1 Na1 36. b4 cxb4 37. Ne3 Rd2 38. Rxb6 b3 39. Ra6 Nc2 40. Ng2 Nd4 41. Rd6 Rd1+ 42. Kf2 Rd2+ 43. Kf1 Rd3 44. Ne1 Rd2 45. Ng2 Nf3 46. Rxd2 Nxd2+ 47. Ke2 Nc4 48. Kd3 Nxb2+ 49. Kc3 Nd1+ 50. Kxb3 Nf2 51. Ne3 f5 52. Kc2 f4 53. gxf4 gxf4 54. Ng2 Kg5 55. Kd2 Kg4 56. Ke2 Nh3 57. Kf1 f3 58. Ne3+ Kf4 59. Nd5+ Kf5 60. Ne7+ Ke4 61. Ng8 Nf4 62. Nf6+ Ke3 63. h4 f2 64. Ne4 Kxe4 65. Kxf2 Ng6 66. Kg3 Ke3 67. Kg2 Kf4 68. Kh3 Kf3 69. Kh2 Kg4 70. Kg2 Nf4+ 71. Kf2 Kxh4 72. Kf3 Kg5 73. Kg3 h4+ 74. Kf3 h3 75. Kg3 Kh5 76. Kh2 Kh4 77. Kg1 Kg4 78. Kh2 Nh5 79. Kg1 Kg3 80. Kh1 Nf4 81. Kg1 Nd3 82. Kh1 Nf2+ 83. Kg1 h2+ 0-1

