[Event "Sao Paulo-chB"]
[Site "Sao Paulo"]
[Date "2000.??.??"]
[Round "1"]
[White "Demasi, Joao Otavio"]
[Black "Malbran, Emilio"]
[Result "0-1"]
[ECO "E90"]
[BlackElo "2179"]
[PlyCount "40"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 c5 4. Nc3 Bg7 5. d5 0-0 6. e4 b5 7. cxb5 a6 8. b6 d6 9. h3 Qxb6 10. a4 e6 11. a5 Qb7 12. Ra3 exd5 13. exd5 Bf5 14. Rb3 Qc7 15. Bf4 Qxa5 16. Bxd6 Re8+ 17. Be2 Ne4 18. Rxb8 Raxb8 19. Bxb8 Bxc3+ 20. bxc3 Nxc3 0-1

[Event "Maalox Plus op"]
[Site "Brasilia"]
[Date "1999.01.24"]
[Round "6"]
[White "Brito, Luismar Jorge"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2255"]
[PlyCount "63"]
[EventDate "1999.01.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 068 Extra"]
[Source "ChessBase"]
[SourceDate "1999.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. b4 cxb4 4. d4 d5 5. e5 Nc6 6. a3 Qb6 7. axb4 Bxb4+ 8. c3 Be7 9. Bd3 Bd7 10. 0-0 Nh6 11. Re1 Rc8 12. Re2 Nf5 13. g4 Nh4 14. Nxh4 Bxh4 15. Rb2 Qc7 16. Bd2 f6 17. g5 Bxf2+ 18. Kxf2 fxe5 19. Qh5+ Ke7 20. Kg1 exd4 21. cxd4 Rcf8 22. Qh4 g6 23. Nc3 Rf3 24. Be2 Rf7 25. Re1 a6 26. Bxa6 Kd8 27. Bxb7 Rhf8 28. Bxc6 Qxc6 29. Rb8+ Bc8 30. Ne2 Qc2 31. Rc1 Qxd2 32. Rbxc8+ 1-0

[Event "Maalox Plus op"]
[Site "Brasilia"]
[Date "1999.01.22"]
[Round "3"]
[White "Demasi, Joao Otavio"]
[Black "Lucena, Lincoln"]
[Result "0-1"]
[ECO "D35"]
[BlackElo "2245"]
[PlyCount "82"]
[EventDate "1999.01.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 068 Extra"]
[Source "ChessBase"]
[SourceDate "1999.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.03.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. cxd5 exd5 5. Nc3 Be7 6. Bg5 c6 7. e3 Bf5 8. Bd3 Bxd3 9. Qxd3 Nbd7 10. 0-0 0-0 11. Rab1 a5 12. Ne5 Nxe5 13. dxe5 Nd7 14. Bxe7 Qxe7 15. f4 f6 16. exf6 Nxf6 17. Rbe1 Rae8 18. f5 Qe5 19. Qd4 Rf7 20. Qh4 h6 21. g4 d4 22. exd4 Qxd4+ 23. Kh1 Rxe1 24. Rxe1 Nxg4 25. Re8+ Rf8 26. Qe7 Qf6 27. Qxf6 Nxf6 28. Re5 Rd8 29. Rxa5 Rd2 30. b3 Rc2 31. Rc5 Nd7 32. Rc4 Ne5 33. Re4 Nd3 34. Rc4 Nb2 35. Rc5 Nd3 36. Rc4 Ne5 37. Re4 Nf3 38. Ne2 Rxa2 39. Re3 Nh4 40. Re4 Nxf5 41. Nf4 Nh4 0-1

[Event "Itau Mercosul Cup 2nd"]
[Site "Sao Paulo"]
[Date "1998.09.16"]
[Round "9"]
[White "Demasi, Joao Otavio"]
[Black "Del Bosco, Roberto Paulo"]
[Result "0-1"]
[ECO "A70"]
[PlyCount "60"]
[EventDate "1998.09.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. d5 e6 4. c4 exd5 5. cxd5 d6 6. h3 g6 7. Nc3 Bg7 8. e4 0-0 9. Bd3 b5 10. Bxb5 Nxe4 11. Nxe4 Qa5+ 12. Bd2 Qxb5 13. Nxd6 Qxb2 14. Rc1 Ba6 15. Qa4 Bd3 16. Nc4 Qb7 17. Ne3 Nd7 18. Bc3 Rfe8 19. Bxg7 Kxg7 20. Qb3 Qa6 21. Qc3+ Kg8 22. h4 c4 23. h5 Qf6 24. hxg6 hxg6 25. Qd4 Rab8 26. Rh4 Rb2 27. Qxf6 Nxf6 28. Rd4 Ne4 29. Nxc4 Re2+ 30. Kf1 Rc2+ 0-1

[Event "Itau Mercosul Cup 2nd"]
[Site "Sao Paulo"]
[Date "1998.09.15"]
[Round "8"]
[White "Cajal, Andre"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2160"]
[PlyCount "61"]
[EventDate "1998.09.??"]
[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. Qe2 c5 3. f4 Nc6 4. c3 Nf6 5. Nf3 Be7 6. g3 0-0 7. Bg2 d6 8. d3 Bd7 9. 0-0 b5 10. Be3 b4 11. h3 Rb8 12. c4 a5 13. Qf2 Ne8 14. e5 dxe5 15. fxe5 Qb6 16. Nbd2 Nc7 17. Ne4 Na6 18. Kh2 b3 19. a3 Rbd8 20. d4 cxd4 21. Nxd4 Nxe5 22. Nf5 exf5 23. Bxb6 fxe4 24. Bxd8 Bxd8 25. Bxe4 Nxc4 26. Rad1 Bb6 27. Qe2 Be6 28. Bd3 Ne3 29. Bxa6 Nxf1+ 30. Rxf1 Bd4 31. Bc4 1-0

[Event "Itau Mercosul Cup 2nd"]
[Site "Sao Paulo"]
[Date "1998.09.14"]
[Round "7"]
[White "Demasi, Joao Otavio"]
[Black "Barrionuevo, Alfredo C"]
[Result "1-0"]
[ECO "A87"]
[BlackElo "2125"]
[PlyCount "51"]
[EventDate "1998.09.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 g6 3. c4 f5 4. g3 Bg7 5. Bg2 Nf6 6. 0-0 0-0 7. Nbd2 c6 8. Qc2 Qc7 9. b3 Nbd7 10. Bb2 e5 11. dxe5 dxe5 12. e4 f4 13. Rad1 Ne8 14. c5 b6 15. b4 Kh8 16. Nc4 bxc5 17. bxc5 Rb8 18. Ba1 Rb5 19. Nd6 Rxc5 20. Nxe8 Qa5 21. Qb3 Rxe8 22. Ng5 Bf8 23. Rxd7 Bxd7 24. Qf7 Bg7 25. Qxd7 Rf8 26. Ne6 1-0

[Event "Itau Mercosul Cup 2nd"]
[Site "Sao Paulo"]
[Date "1998.09.13"]
[Round "6"]
[White "Aranha Filho, Alvaro Zimmermann"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2230"]
[PlyCount "81"]
[EventDate "1998.09.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 c5 4. c3 e6 5. e3 Be7 6. Nbd2 0-0 7. Bd3 b6 8. Ne5 Bb7 9. g4 Ne4 10. Qc2 f5 11. Nxe4 fxe4 12. Be2 Nd7 13. 0-0 Nxe5 14. Bxe5 Bd6 15. Bg3 Bxg3 16. hxg3 Qe7 17. Qa4 Rf7 18. b4 c4 19. b5 g6 20. Kg2 Qg5 21. Qa3 h5 22. Qd6 Rd8 23. Qe5 Qxe5 24. dxe5 hxg4 25. Bxg4 Bc8 26. a4 Bd7 27. a5 Bc8 28. axb6 axb6 29. Ra8 Rdf8 30. Rb8 Kg7 31. Rxb6 Ra7 32. Bxe6 Bxe6 33. Rxe6 Ra5 34. Re7+ Kh6 35. b6 Rb5 36. b7 Rb8 37. Rh1+ Kg5 38. Rhh7 Rb2 39. Rhf7 Rb6 40. Rd7 Rb3 41. e6 1-0

[Event "Itau Mercosul Cup 2nd"]
[Site "Sao Paulo"]
[Date "1998.09.12"]
[Round "5"]
[White "Demasi, Joao Otavio"]
[Black "Gajadin, Dewperkash"]
[Result "1-0"]
[ECO "E10"]
[BlackElo "2205"]
[PlyCount "107"]
[EventDate "1998.09.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. d5 e6 4. c4 b5 5. a4 bxc4 6. Nc3 exd5 7. Nxd5 Bb7 8. e4 Nxe4 9. Bxc4 Qa5+ 10. Kf1 Ba6 11. Qe2 Bxc4 12. Qxc4 Nd6 13. Qf4 Nc6 14. Qe3+ Kd8 15. Bd2 Qa6+ 16. Kg1 Qc4 17. Qg5+ Kc8 18. Ne3 Qe6 19. Qxc5 Ne4 20. Qc2 Nxd2 21. Qxd2 Bb4 22. Qd3 Rb8 23. h3 Rb7 24. Kh2 Qd6+ 25. Qxd6 Bxd6+ 26. g3 Rxb2 27. Kg2 Bc5 28. Nd1 Re2 29. Rc1 Ba3 30. Rc4 Kb8 31. Nc3 Rb2 32. Rd1 Rb7 33. Nb5 Be7 34. Rg4 g6 35. Re4 a6 36. Nd6 Bxd6 37. Rxd6 Kc7 38. Rf6 a5 39. Rxf7 Rb4 40. Re2 Rxa4 41. Rc2 Re4 42. Ng5 Re5 43. Nxh7 a4 44. f4 Ra5 45. Nf6 Rd8 46. Ne4 a3 47. Nd2 a2 48. Nb3 Rb8 49. Nxa5 a1Q 50. Rxc6+ Kd8 51. Rf8+ Ke7 52. Rxb8 dxc6 53. Nxc6+ Kd6 54. Ne5 1-0

[Event "Itau Mercosul Cup 2nd"]
[Site "Sao Paulo"]
[Date "1998.09.11"]
[Round "4"]
[White "Demasi, Joao Otavio"]
[Black "Neijhorst, Julian HA"]
[Result "1/2-1/2"]
[ECO "E92"]
[BlackElo "2205"]
[PlyCount "94"]
[EventDate "1998.09.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. d5 a5 8. Bg5 h6 9. Bh4 Na6 10. 0-0 Qe8 11. h3 g5 12. Bg3 Nh5 13. Nh2 Nf4 14. Bg4 f5 15. exf5 Bxf5 16. Bxf5 Rxf5 17. Ng4 Nc5 18. Qc2 Rf8 19. f3 h5 20. Nf2 Bh6 21. Nfe4 Qg6 22. Rac1 Nxe4 23. Qxe4 Qxe4 24. fxe4 Nd3 25. Rc2 g4 26. Rxf8+ Rxf8 27. hxg4 Be3+ 28. Kh2 hxg4 29. Bh4 Rf7 30. g3 Rf1 31. Re2 Bb6 32. Bg5 Ne1 33. Be3 Bxe3 34. Rxe3 Nc2 35. Re2 Nd4 36. Kg2 Nxe2 37. Kxf1 Nxg3+ 38. Kf2 Nh5 39. Nb5 Nf6 40. Kg3 Nxe4+ 41. Kxg4 Kf7 42. Nxc7 Nf2+ 43. Kf5 Ke7 44. Nb5 Nd3 45. b3 Nc5 46. Nc3 b6 47. Nb5 Kd7 1/2-1/2

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Borges Delgado, Gabriel Jose"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "D58"]
[PlyCount "67"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Nbd7 5. cxd5 exd5 6. Nc3 Be7 7. e3 0-0 8. Bd3 h6 9. Bh4 b6 10. 0-0 Bb7 11. Rc1 Ne4 12. Bxe7 Qxe7 13. Qb3 Ndf6 14. Rfd1 Rfd8 15. Qc2 c5 16. dxc5 bxc5 17. Bxe4 Nxe4 18. Nxe4 dxe4 19. Rxd8+ Rxd8 20. Nd2 Qd7 21. Nb3 c4 22. Nd4 Bd5 23. Rd1 Qb7 24. Qc3 g6 25. Ne2 Rb8 26. Nf4 Bc6 27. Qxc4 Bb5 28. Qd4 Ba6 29. b3 Qc6 30. Nd5 Qc2 31. Nf6+ Kf8 32. Nd7+ Kg8 33. Nxb8 Bd3 34. Ra1 1-0

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Demasi, Joao Otavio"]
[Black "Aboud, Sebastien"]
[Result "1/2-1/2"]
[ECO "D36"]
[PlyCount "77"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. cxd5 exd5 5. Nc3 Nbd7 6. Bg5 c6 7. e3 h6 8. Bh4 Be7 9. Qc2 0-0 10. Bd3 a5 11. 0-0 Re8 12. Bg3 Nh5 13. a3 Nxg3 14. hxg3 Nf6 15. Rab1 Bd6 16. Bf5 Bxf5 17. Qxf5 Qd7 18. Qd3 Ne4 19. b4 axb4 20. axb4 Ra3 21. Rfc1 Qe7 22. Nd2 Nxd2 23. Qxd2 Bxb4 24. Qb2 Rxc3 25. Rxc3 Bxc3 26. Qxc3 Qd7 27. Rb6 Re7 28. Qa5 f6 29. Qb4 Kf7 30. Kf1 Qc7 31. Ke2 Ke8 32. Kd2 Kd8 33. Qa5 Kc8 34. Kc3 Kb8 35. Qb4 Rf7 36. Qc5 Qe7 37. Qxc6 Qa3+ 38. Kd2 Qa2+ 39. Kd1 1/2-1/2

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Demasi, Joao Otavio"]
[Black "Anderson, Christie"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "115"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. c3 g6 4. Bf4 Bg7 5. e3 0-0 6. Bd3 d5 7. Nbd2 c4 8. Bc2 Nh5 9. Bg3 b5 10. 0-0 Nc6 11. e4 Nxg3 12. hxg3 e5 13. exd5 Qxd5 14. Be4 Qd7 15. Nxe5 Bxe5 16. dxe5 Bb7 17. Nf3 Qe7 18. Bxc6 Bxc6 19. Nd4 Qb7 20. Nxc6 Qxc6 21. Qf3 Rac8 22. Rad1 Rfe8 23. Rfe1 Re6 24. Qxc6 Rexc6 25. Rd7 a6 26. Red1 Re6 27. f4 h5 28. Kf2 Rce8 29. R1d6 Rxd6 30. Rxd6 a5 31. Kf3 b4 32. Rd4 bxc3 33. bxc3 Rc8 34. Ke4 Rb8 35. a4 Rb2 36. Kf3 Rb1 37. Rxc4 Ra1 38. g4 h4 39. g5 Ra2 40. Kg4 Rxg2+ 41. Kxh4 Ra2 42. Kg4 Rg2+ 43. Kf3 Ra2 44. Ke4 Kf8 45. Kd5 Ke7 46. Kc6 Rb2 47. Rd4 Rb3 48. c4 Rb4 49. Kc5 Rxa4 50. Kb5 Ra1 51. c5 Rc1 52. Ra4 Ke6 53. Rxa5 Kd5 54. Kb6 Rb1+ 55. Rb5 Rc1 56. c6+ Ke6 57. c7 Kf5 58. Rc5 1-0

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Demasi, Joao Otavio"]
[Black "Bernard, Ignacio"]
[Result "0-1"]
[ECO "A57"]
[BlackElo "2255"]
[PlyCount "64"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. c4 g6 5. cxb5 a6 6. b6 d6 7. Nc3 Bg7 8. e4 Nbd7 9. Be2 0-0 10. 0-0 Qxb6 11. a4 a5 12. Nd2 Ne8 13. Nc4 Qd8 14. Bg5 h6 15. Bd2 Nb6 16. Qc1 Kh7 17. Nb5 Nxc4 18. Bxc4 Nc7 19. Bc3 Bxc3 20. Qxc3 Nxb5 21. axb5 Bd7 22. Ra4 Qb6 23. Rfa1 Bxb5 24. Bxb5 Qxb5 25. Rxa5 Rxa5 26. Rxa5 Qe2 27. f3 Rb8 28. Qc1 Rxb2 29. Qf1 Qe3+ 30. Kh1 Re2 31. Ra1 c4 32. h3 c3 0-1

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Demasi, Joao Otavio"]
[Black "Clark, Robin"]
[Result "1/2-1/2"]
[ECO "A08"]
[PlyCount "67"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 g6 6. Bg2 Bg7 7. 0-0 Nge7 8. Re1 0-0 9. e5 b5 10. Nf1 h6 11. h4 c4 12. Bf4 a5 13. N1h2 Ba6 14. Qd2 Kh7 15. Ng4 Nf5 16. d4 b4 17. c3 Rb8 18. Ne3 Nxe3 19. Bxe3 a4 20. Qc2 a3 21. bxa3 bxa3 22. Qa4 Bb5 23. Qxa3 Ra8 24. Qb2 Qa5 25. Bf1 Rfb8 26. Be2 Bf8 27. Qd2 Qa3 28. Nh2 Ne7 29. Ng4 Ng8 30. Reb1 Bc6 31. Kg2 Rxb1 32. Rxb1 Qxa2 33. Rb2 Qa5 34. Rb1 1/2-1/2

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Demasi, Joao Otavio"]
[Black "Feige, Jorge Luis"]
[Result "1-0"]
[ECO "D55"]
[BlackElo "2210"]
[PlyCount "50"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Bb7 5. Bg5 d5 6. e3 Be7 7. Qa4+ c6 8. Qc2 0-0 9. Nc3 Nbd7 10. Bd3 c5 11. cxd5 exd5 12. 0-0 Ne4 13. Bf4 Ndf6 14. dxc5 Nxc5 15. Be2 Ne6 16. Be5 Ne4 17. Rfd1 Rc8 18. Qa4 Nxc3 19. bxc3 Nc5 20. Qg4 Bf6 21. Rac1 Ne4 22. Bd4 Qe7 23. Bd3 Nc5 24. Bc2 Ne6 25. Qf5 Rc7 1-0

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Demasi, Joao Otavio"]
[Black "Moreda, Lucas"]
[Result "0-1"]
[ECO "D16"]
[BlackElo "2305"]
[PlyCount "64"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Nc3 c6 5. a4 Nd5 6. Ne5 Nxc3 7. bxc3 b5 8. axb5 cxb5 9. e3 Bb7 10. Rb1 Qd5 11. f3 a6 12. e4 Qd8 13. Bxc4 e6 14. Ba2 Bd6 15. Nd3 Qh4+ 16. Nf2 0-0 17. g3 Qh5 18. 0-0 Nd7 19. Nd3 e5 20. Be3 Rac8 21. c4 exd4 22. Bxd4 Rfd8 23. cxb5 Nc5 24. Bxc5 Bxc5+ 25. Kg2 Ba7 26. b6 Bb8 27. Qb3 Rc6 28. Rfc1 Rh6 29. Rh1 Qh3+ 30. Kf2 Rf6 31. Rbe1 Qh5 32. Nc1 Rd2+ 0-1

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Garcia, Jesus"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "B30"]
[PlyCount "59"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 Nc6 3. g3 g6 4. Bg2 Bg7 5. c3 e6 6. Qe2 d6 7. Na3 Nge7 8. Nc2 0-0 9. h4 Rb8 10. d3 b5 11. h5 b4 12. c4 b3 13. Ne3 bxa2 14. Ng4 Qa5+ 15. Kf1 Qb4 16. Rxa2 Qb3 17. Ra3 Qb4 18. e5 dxe5 19. Nfxe5 Nd4 20. Qd1 Nef5 21. Rxa7 Qb6 22. Ra3 Bb7 23. Be4 Rbd8 24. Rh2 Bxe4 25. dxe4 Nc6 26. Nd3 Nd6 27. Qf3 Nxc4 28. Nf6+ Bxf6 29. Qxf6 Rd4 30. h6 1-0

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Moreno Carnero, Javier"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2425"]
[PlyCount "107"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nd2 Qc7 6. Bd3 Nc6 7. Nxc6 dxc6 8. a4 a5 9. 0-0 e5 10. Nc4 Bc5 11. Qh5 Bd6 12. Be3 g6 13. Qf3 Be6 14. Rfd1 Qe7 15. Rd2 Bc7 16. Bf1 Kf8 17. Rad1 Kg7 18. h3 Nf6 19. Bb6 Bxb6 20. Nxb6 Rad8 21. Qc3 Rxd2 22. Rxd2 Qb4 23. Qxb4 axb4 24. f3 Rb8 25. Bc4 Bxc4 26. Nxc4 Re8 27. Na5 Re7 28. Rd8 Ne8 29. Nxb7 Rxb7 30. Rxe8 b3 31. c3 Kf6 32. Kf2 Ra7 33. Rc8 Ra6 34. Rb8 Rxa4 35. Rxb3 c5 36. Rb5 c4 37. Rb4 Ra2 38. Ke2 Ke6 39. Rb5 Kd7 40. Kd2 Kc7 41. Rb4 Kd6 42. Kc2 Kc5 43. Rb7 Ra1 44. Rc7+ Kb5 45. Rxf7 Rg1 46. g4 Rg3 47. h4 Rh3 48. Rxh7 Rxf3 49. Re7 Rf2+ 50. Kb1 Rf4 51. Rxe5+ Ka4 52. h5 Rxg4 53. hxg6 Rxg6 54. Rc5 1-0

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Palencia Morales, Wilson Guillermo"]
[Black "Demasi, Joao Otavio"]
[Result "0-1"]
[ECO "A06"]
[PlyCount "44"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 c5 3. e3 Nc6 4. Bb2 f6 5. Bb5 Qb6 6. Nc3 e6 7. Qe2 a6 8. Bxc6+ Qxc6 9. d4 Bd6 10. g4 Ne7 11. g5 e5 12. 0-0-0 cxd4 13. exd4 Bg4 14. gxf6 gxf6 15. dxe5 fxe5 16. Nxd5 Nxd5 17. Bxe5 0-0-0 18. Bxh8 Rxh8 19. Qe4 Ba3+ 20. Kd2 Qc3+ 21. Ke2 Bxf3+ 22. Qxf3 Re8+ 0-1

[Event "Pan American-ch U18"]
[Site "Isla Margarita"]
[Date "1998.??.??"]
[Round "?"]
[White "Perryman, Sean"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "B30"]
[PlyCount "79"]
[EventDate "1998.08.05"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "VEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. Bc4 a6 5. a3 b5 6. Ba2 g6 7. d3 Bg7 8. Bf4 b4 9. axb4 cxb4 10. Na4 Nge7 11. 0-0 d5 12. Qe1 0-0 13. Bd2 a5 14. Bb3 Qc7 15. Rc1 Ne5 16. Nxe5 Bxe5 17. f4 Bd4+ 18. Kh1 Bd7 19. c3 bxc3 20. Bxc3 Qa7 21. Qh4 Rfe8 22. Rf3 dxe4 23. Rh3 h5 24. dxe4 Rab8 25. Bd1 e5 26. Rd3 Qa6 27. Be2 Qc6 28. fxe5 Bxc3 29. Nxc3 Rxb2 30. Rd6 Qc7 31. Qe1 Rc8 32. Na2 Qb6 33. Rxc8+ Nxc8 34. Rd2 a4 35. Bc4 a3 36. Nc3 Bg4 37. h3 Bd7 38. Bd5 Qb4 39. Bxf7+ Kxf7 40. Rxd7+ 1-0

[Event "BRA-ch62 sf"]
[Site "Florianopolis"]
[Date "1995.06.??"]
[Round "2"]
[White "Chemin, Vitorio"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2285"]
[PlyCount "27"]
[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 e6 2. c4 c5 3. Nf3 d5 4. cxd5 exd5 5. exd5 Qxd5 6. Nc3 Qd8 7. d4 cxd4 8. Nxd4 Nf6 9. Bb5+ Bd7 10. Qe2+ Qe7 11. Be3 g6 12. Bxd7+ Nbxd7 13. Ndb5 Nb6 14. Bxb6 1-0

[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 "1"]
[White "Demasi, Joao Otavio"]
[Black "Dos Santos, Haroldo Cunha Jr"]
[Result "0-1"]
[ECO "D11"]
[BlackElo "2230"]
[PlyCount "38"]
[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 d5 2. Nf3 Nf6 3. e3 Bg4 4. c4 c6 5. Qb3 Qb6 6. Nc3 e6 7. Bd3 Nbd7 8. Ne5 Nxe5 9. dxe5 Nd7 10. f4 Nc5 11. Qc2 Nxd3+ 12. Qxd3 Qa6 13. b3 Bb4 14. Bd2 Rd8 15. e4 dxe4 16. Qxe4 Qa5 17. Qe3 0-0 18. a4 Rxd2 19. Kxd2 Bxc3+ 0-1

[Event "BRA-ch62 sf"]
[Site "Florianopolis"]
[Date "1995.06.??"]
[Round "8"]
[White "Demasi, Joao Otavio"]
[Black "Sady, Joao Jose"]
[Result "0-1"]
[ECO "A92"]
[PlyCount "76"]
[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 e6 2. c4 f5 3. Nf3 Nf6 4. g3 Be7 5. Bg2 0-0 6. 0-0 c6 7. b3 a5 8. Ba3 Bxa3 9. Nxa3 Qe7 10. Nc2 d6 11. Nd2 Nbd7 12. e4 fxe4 13. Nxe4 Nxe4 14. Bxe4 Nf6 15. Bg2 e5 16. dxe5 dxe5 17. Ne3 Be6 18. Qc2 Qc5 19. Rad1 Rad8 20. Rd2 Rd4 21. Rfd1 Ng4 22. Re1 Rxd2 23. Qxd2 Rxf2 24. Qxf2 Nxf2 25. Kxf2 Qa3 26. Re2 a4 27. bxa4 Qxa4 28. Rc2 Bf5 29. Rd2 Be6 30. Rc2 Bf5 31. Rd2 Qa5 32. Ke2 Be6 33. Rc2 g6 34. Be4 Qc5 35. h4 Qd4 36. Bf3 e4 37. Bg2 Bg4+ 38. Kf2 Bd1 0-1

[Event "BRA-ch62 sf"]
[Site "Florianopolis"]
[Date "1995.06.??"]
[Round "4"]
[White "Smith, Jose Ricardo"]
[Black "Demasi, Joao Otavio"]
[Result "1/2-1/2"]
[ECO "C10"]
[PlyCount "62"]
[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 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Nf3 Bc6 6. Bd3 Nd7 7. Ne5 Bxe4 8. Bxe4 c6 9. 0-0 Ngf6 10. Bf3 Bd6 11. Bf4 Qc7 12. Qe2 0-0 13. c4 c5 14. Nxd7 Nxd7 15. Bxd6 Qxd6 16. dxc5 Qxc5 17. Bxb7 Rab8 18. Bf3 Ne5 19. b3 a5 20. Rfe1 Nd7 21. Be4 Nf6 22. Bc2 Rfc8 23. Qe3 Qxe3 24. Rxe3 h6 25. h3 Nd5 26. cxd5 Rxc2 27. dxe6 fxe6 28. Rxe6 a4 29. Re3 Rf8 30. Rf3 Rxf3 31. gxf3 a3 1/2-1/2

[Event "BRA-ch U20"]
[Site "Paranagua"]
[Date "1995.03.??"]
[Round "4"]
[White "Da Silva, Eduardo Munoa"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "E85"]
[PlyCount "41"]
[EventDate "1995.03.30"]
[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 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Qd2 a6 8. Nge2 Rb8 9. g4 e5 10. d5 Ne7 11. h4 c6 12. Ng3 b5 13. h5 bxc4 14. dxc6 d5 15. g5 d4 16. gxf6 Bxf6 17. Bh6 dxc3 18. Qxd8 Rxd8 19. c7 Be6 20. cxd8Q+ Rxd8 21. bxc3 1-0

[Event "BRA-ch U20"]
[Site "Paranagua"]
[Date "1995.03.??"]
[Round "3"]
[White "Demasi, Joao Otavio"]
[Black "Goncalves, Eric"]
[Result "1-0"]
[ECO "D92"]
[PlyCount "61"]
[EventDate "1995.03.30"]
[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 g6 3. c4 Bg7 4. Nc3 d5 5. Bf4 c6 6. e3 Bg4 7. Qb3 Qb6 8. cxd5 Qxb3 9. axb3 Bxf3 10. gxf3 a6 11. dxc6 Nxc6 12. Bb5 Rc8 13. Bxc6+ Rxc6 14. Kd2 0-0 15. Ne4 Nxe4+ 16. fxe4 Rb6 17. Ra3 Rc8 18. Rc1 Rxc1 19. Kxc1 Bf8 20. Ra4 Rxb3 21. Kc2 Rb6 22. Rc4 e6 23. d5 Kg7 24. Bc7 exd5 25. exd5 Rb5 26. d6 Rd5 27. Rd4 Rc5+ 28. Kd3 Rb5 29. b4 Rf5 30. d7 Be7 31. Ke2 1-0

[Event "BRA-ch U20"]
[Site "Paranagua"]
[Date "1995.03.??"]
[Round "7"]
[White "Demasi, Joao Otavio"]
[Black "Langaro, Caetano Azambuja"]
[Result "1/2-1/2"]
[ECO "D02"]
[PlyCount "62"]
[EventDate "1995.03.30"]
[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. Nf3 c5 3. e3 Nc6 4. c3 Bg4 5. Qb3 c4 6. Qxb7 Na5 7. Qb5+ Bd7 8. Qxd5 Nf6 9. Qe5 Rb8 10. e4 g5 11. Nxg5 Rb5 12. Qf4 h5 13. e5 Bh6 14. h4 Bxg5 15. hxg5 Nd5 16. Qd2 h4 17. Na3 Qa8 18. Nxb5 Bxb5 19. b3 Qc6 20. b4 Nb7 21. Qc2 Ba4 22. Qd2 a6 23. Be2 h3 24. Rxh3 Rxh3 25. gxh3 Nxb4 26. cxb4 c3 27. Qe3 Qh1+ 28. Bf1 Bb5 29. Kd1 Ba4+ 30. Ke1 Bb5 31. Kd1 Ba4+ 1/2-1/2

[Event "BRA-ch U20"]
[Site "Paranagua"]
[Date "1995.03.??"]
[Round "5"]
[White "Demasi, Joao Otavio"]
[Black "Ozaki Barbosa, Renato"]
[Result "0-1"]
[ECO "B86"]
[PlyCount "46"]
[EventDate "1995.03.30"]
[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. Bc4 e6 7. Be3 b5 8. Bd3 Bb7 9. f3 Qc7 10. Qd2 Nc6 11. Bxb5 axb5 12. Ncxb5 Qb8 13. g4 Be7 14. g5 Nd7 15. c3 0-0 16. h4 Nce5 17. h5 Ba6 18. g6 Bxb5 19. gxh7+ Kxh7 20. Bg5 Nd3+ 21. Kd1 Nxb2+ 22. Qxb2 Ba4+ 23. Nb3 Bxb3+ 0-1

[Event "BRA-ch U20"]
[Site "Paranagua"]
[Date "1995.03.??"]
[Round "1"]
[White "Demasi, Joao Otavio"]
[Black "Prates, Fabiano Fortes"]
[Result "0-1"]
[ECO "E93"]
[BlackElo "2220"]
[PlyCount "78"]
[EventDate "1995.03.30"]
[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 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. d5 Nbd7 8. Bg5 h6 9. Bh4 a5 10. Nd2 c6 11. f3 Qc7 12. g4 Nh7 13. Nf1 Bf6 14. Bf2 Bg5 15. h4 Bf4 16. Ng3 Nc5 17. h5 Kg7 18. hxg6 fxg6 19. Nf1 Ng5 20. Be3 Bd7 21. Qd2 Rad8 22. 0-0-0 Qb8 23. Bxf4 Rxf4 24. Ng3 a4 25. Rdf1 a3 26. b3 Rdf8 27. Kc2 Qc7 28. Qe3 Qc8 29. Kb1 R8f6 30. Kc2 b5 31. dxc6 Bxc6 32. cxb5 Bxb5 33. Bxb5 Rxf3 34. Rxf3 Rxf3 35. Qe1 Ncxe4 36. Ngxe4 Nxe4 37. Bd3 Rf2+ 38. Be2 Qxc3+ 39. Qxc3 Rxe2+ 0-1

[Event "BRA-ch U20"]
[Site "Paranagua"]
[Date "1995.03.??"]
[Round "6"]
[White "Matsumoto, Daniel"]
[Black "Demasi, Joao Otavio"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "40"]
[EventDate "1995.03.30"]
[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. exd5 exd5 4. Bd3 Nc6 5. c3 Bd6 6. Ne2 Nge7 7. 0-0 Bf5 8. Nf4 Bxd3 9. Qxd3 0-0 10. Na3 Bxa3 11. bxa3 Na5 12. Rb1 b6 13. Re1 Re8 14. Nh3 Qd7 15. Bf4 c6 16. Re3 Nc4 17. Rf3 Qf5 18. Qd1 Nxa3 19. Rc1 Nc4 20. Be5 Qd7 0-1

[Event "BRA-ch U20"]
[Site "Paranagua"]
[Date "1995.03.??"]
[Round "2"]
[White "Santos, Marcelo Chapper"]
[Black "Demasi, Joao Otavio"]
[Result "1/2-1/2"]
[ECO "E83"]
[PlyCount "78"]
[EventDate "1995.03.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Qd2 a6 8. h4 Rb8 9. g4 e5 10. Nge2 b5 11. h5 bxc4 12. d5 Ne7 13. Ng3 c6 14. g5 Ne8 15. Bxc4 cxd5 16. Nxd5 gxh5 17. Nxh5 Be6 18. Nxg7 Kxg7 19. Qh2 Rh8 20. Qh6+ Kg8 21. Nf6+ Nxf6 22. gxf6 Qf8 23. Qxf8+ Kxf8 24. fxe7+ Kxe7 25. Bxe6 fxe6 26. 0-0-0 h5 27. Rh2 Rhc8+ 28. Rc2 Rxc2+ 29. Kxc2 Rf8 30. Bg5+ Kd7 31. Rd3 Rf7 32. b4 Kc6 33. a4 d5 34. Rc3+ Kb7 35. exd5 exd5 36. Re3 Rf5 37. Bh6 d4 38. Re4 Rxf3 39. Rxe5 Ra3 1/2-1/2

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1995.??.??"]
[Round "1"]
[White "Demasi, Joao Otavio"]
[Black "Araujo, Adalberto Marcos"]
[Result "0-1"]
[ECO "A87"]
[BlackElo "2290"]
[PlyCount "66"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. c4 d6 7. b3 Nc6 8. Bb2 Ne4 9. Nbd2 e6 10. a3 Qe7 11. Qc2 Nxd2 12. Qxd2 e5 13. d5 Nd8 14. Rfe1 Nf7 15. e4 Bh6 16. Qc3 f4 17. c5 g5 18. cxd6 cxd6 19. gxf4 gxf4 20. Rac1 Bg4 21. Kh1 Kh8 22. Qd3 Rg8 23. Rc2 Rg7 24. Rec1 Rag8 25. Rc7 Bd7 26. Rg1 Qd8 27. Rxb7 Bc8 28. Rb8 Qc7 29. Rb4 Ng5 30. Rc4 Qe7 31. Rcc1 Bg4 32. Rce1 Bxf3 33. Bxf3 Nh3 0-1

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1995.??.??"]
[Round "3"]
[White "Demasi, Joao Otavio"]
[Black "D'Israel, Davy Maurice"]
[Result "0-1"]
[ECO "D06"]
[BlackElo "2250"]
[PlyCount "76"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Nc3 Nc6 5. cxd5 exd5 6. Bf4 Nf6 7. e3 Be7 8. Bb5 0-0 9. Bxc6 bxc6 10. 0-0 c5 11. dxc5 Bxc5 12. Nd4 Be6 13. Ncb5 Bb6 14. Rc1 Rc8 15. Nxe6 fxe6 16. Rc6 Qe8 17. Qc2 e5 18. Bg3 Qd7 19. Rc1 Ne8 20. Qc3 Rf5 21. Qd3 Qf7 22. Nd6 Nxd6 23. Rxd6 d4 24. e4 Rg5 25. Rd5 Rf8 26. f3 Qe6 27. Qc4 Re8 28. b4 Kf8 29. Kf1 Qh6 30. a4 Rxg3 31. hxg3 Qh1+ 32. Kf2 d3+ 33. Rc5 Qh6 34. Rd1 Rd8 35. Rxd3 Rxd3 36. Qxd3 a5 37. Qd8+ Kf7 38. Ke2 Qh1 0-1

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1995.??.??"]
[Round "5"]
[White "Demasi, Joao Otavio"]
[Black "Medeiros, Horacio Prol"]
[Result "0-1"]
[ECO "D38"]
[PlyCount "54"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. cxd5 exd5 5. Bg5 Nbd7 6. Nc3 Bb4 7. Qc2 0-0 8. e3 c5 9. dxc5 Qa5 10. a3 Ne4 11. Rc1 Bxc3+ 12. bxc3 Ndxc5 13. Be7 Re8 14. Bxc5 Qxc5 15. Qa4 Bg4 16. Qb4 Rac8 17. Bb5 Re7 18. 0-0 Bxf3 19. gxf3 Nd2 20. Rfd1 Nxf3+ 21. Kh1 Qc7 22. Qf4 Qxf4 23. exf4 Rc5 24. Bf1 Nh4 25. c4 Rec7 26. Re1 g6 27. Re3 b5 0-1

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1995.??.??"]
[Round "7"]
[White "Demasi, Joao Otavio"]
[Black "Vicentin, Marcos Tadeu"]
[Result "1/2-1/2"]
[ECO "A70"]
[PlyCount "52"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 c5 4. Nc3 Bg7 5. d5 d6 6. h3 0-0 7. e4 e6 8. Bd3 a6 9. a4 exd5 10. cxd5 b6 11. 0-0 Re8 12. Re1 Ra7 13. Rb1 Nbd7 14. Bf4 Qc7 15. Nd2 Ne5 16. Bxe5 Rxe5 17. Nc4 Re8 18. b4 Nd7 19. bxc5 Bxc3 20. cxb6 Nxb6 21. Rxb6 Bxe1 22. Qxe1 Rd8 23. Rc6 Qe7 24. Nxd6 Bxh3 25. Nxf7 Kxf7 26. gxh3 Rd6 1/2-1/2

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1995.??.??"]
[Round "4"]
[White "Horiguti, Augusto M"]
[Black "Demasi, Joao Otavio"]
[Result "0-1"]
[ECO "A08"]
[PlyCount "52"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nf6 3. Bg2 g6 4. 0-0 Bg7 5. d3 0-0 6. Nbd2 Nc6 7. e4 d5 8. Re1 dxe4 9. Nxe4 Nxe4 10. dxe4 Qxd1 11. Rxd1 Bg4 12. Re1 Rad8 13. h3 Be6 14. c3 h6 15. Be3 b6 16. a4 Na5 17. Nd2 Rd7 18. Rac1 Rfd8 19. b4 Nb7 20. Re2 c4 21. Nf3 Rd1+ 22. Rxd1 Rxd1+ 23. Re1 Rxe1+ 24. Nxe1 Bxc3 25. Nc2 Bd7 26. e5 Bxa4 0-1

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1995.??.??"]
[Round "6"]
[White "Marcolin, Rubens"]
[Black "Demasi, Joao Otavio"]
[Result "1/2-1/2"]
[ECO "D03"]
[PlyCount "90"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 0-0 6. Bd3 Nbd7 7. c3 Re8 8. 0-0 e5 9. dxe5 Nxe5 10. Nxe5 Rxe5 11. Nf3 Re8 12. h3 c6 13. Qc2 Qb6 14. Qb3 Ne4 15. Bf4 Nc5 16. Qxb6 axb6 17. Bc2 b5 18. a3 Nd7 19. Rfd1 Nb6 20. Rab1 Be6 21. Nd4 Nc4 22. Nb3 Nxb2 23. Rxb2 Bxc3 24. Ra2 b6 25. Nd4 Bd7 26. Bd3 b4 27. a4 Rec8 28. Rb1 c5 29. Nb5 Bxb5 30. Bxb5 c4 31. Rc2 Ra7 32. Bd6 d4 33. exd4 Bxd4 34. Bxb4 c3 35. Rd1 Bf6 36. g3 Rac7 37. Rd7 Rxd7 38. Bxd7 Rc4 39. Bxc3 Rxc3 40. Re2 Kg7 41. Bb5 Rc1+ 42. Kg2 h5 43. h4 g5 44. hxg5 Bxg5 45. f4 Bf6 1/2-1/2

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1995.??.??"]
[Round "2"]
[White "Rocha, Gleison Begalli"]
[Black "Demasi, Joao Otavio"]
[Result "0-1"]
[ECO "B49"]
[PlyCount "88"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Nc6 7. Be2 Nxd4 8. Bxd4 Ne7 9. Qd2 Nc6 10. Be3 b5 11. 0-0 Bb7 12. Rad1 b4 13. Na4 Ne5 14. f4 Ng6 15. Nb6 Rd8 16. Nc4 d5 17. Bb6 Bc5+ 18. Bxc5 Qxc5+ 19. Kh1 0-0 20. Ne5 Nxe5 21. fxe5 Qb6 22. exd5 Rxd5 23. Qf4 Rxd1 24. Rxd1 Bd5 25. Qd4 Qc6 26. Rg1 a5 27. Qd1 Rc8 28. Bd3 Qa4 29. Rf1 g6 30. Qe2 Qxa2 31. Qf2 Rf8 32. b3 a4 33. Qd4 axb3 34. Qxb4 bxc2 35. Rc1 Rc8 36. Qb6 Qa8 37. Qf2 Qa3 38. Rxc2 Rxc2 39. Qxc2 Qa1+ 40. Qb1 Qxe5 41. h3 Qg3 42. Qc2 Qxh3+ 43. Kg1 Qe3+ 44. Kh2 Qe5+ 0-1

[Event "Pan American-ch U16 10th"]
[Site "Caioba"]
[Date "1994.04.??"]
[Round "4"]
[White "Bazzo, Juliano"]
[Black "Demasi, Joao Otavio"]
[Result "1-0"]
[ECO "B25"]
[PlyCount "105"]
[EventDate "1994.04.05"]
[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. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. d3 Nc6 6. Nge2 e6 7. 0-0 Nge7 8. f4 f5 9. exf5 exf5 10. Be3 0-0 11. d4 b6 12. Nd5 Rb8 13. c3 Kh8 14. Qd2 Be6 15. Nxe7 Nxe7 16. dxc5 dxc5 17. Qxd8 Rbxd8 18. a4 Bc4 19. Rfe1 Nd5 20. Bf2 Rfe8 21. Rad1 Kg8 22. Nc1 Nf6 23. Rxe8+ Rxe8 24. Bf1 Be6 25. a5 Ng4 26. axb6 Nxf2 27. Kxf2 axb6 28. Rd6 Kf7 29. Rxb6 Rd8 30. Ke1 Bd5 31. Nd3 Bf8 32. Ne5+ Ke8 33. c4 Be4 34. Re6+ Be7 35. Rb6 Bd6 36. Rb5 Rc8 37. Kd2 Ke7 38. Bd3 Bh1 39. Kc3 Ke6 40. Rb6 Ba8 41. Be2 Ke7 42. Ra6 Bb7 43. Ra7 Rc7 44. Bf3 Bxf3 45. Rxc7+ Bxc7 46. Nxf3 Ba5+ 47. Kb3 h6 48. Ne5 Ke6 49. Nxg6 Bc7 50. Ka4 Bd6 51. Kb5 h5 52. Kc6 Bb8 53. Nf8+ 1-0

[Event "Pan American-ch U16 10th"]
[Site "Caioba"]
[Date "1994.04.??"]
[Round "3"]
[White "Demasi, Joao Otavio"]
[Black "Araujo, Miguel Leonardo"]
[Result "0-1"]
[ECO "B89"]
[PlyCount "60"]
[EventDate "1994.04.05"]
[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 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Be7 8. Qe2 a6 9. 0-0-0 Qc7 10. Bb3 0-0 11. g4 Nxd4 12. Bxd4 e5 13. Be3 Bxg4 14. f3 Be6 15. Qg2 Kh8 16. Rdg1 Rg8 17. Bxe6 fxe6 18. Qh3 d5 19. exd5 exd5 20. Bg5 Qc5 21. Bxf6 gxf6 22. Rg3 b5 23. Rhg1 Rg5 24. Rxg5 fxg5 25. Re1 b4 26. Na4 Qc7 27. Qe6 e4 28. fxe4 Rc8 29. c3 bxc3 30. b3 Qf4+ 0-1

[Event "Pan American-ch U16 10th"]
[Site "Caioba"]
[Date "1994.04.??"]
[Round "1"]
[White "Demasi, Joao Otavio"]
[Black "Moreda, Lucas"]
[Result "0-1"]
[ECO "B11"]
[PlyCount "124"]
[EventDate "1994.04.05"]
[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 c6 2. d3 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. g3 b6 7. Nxf6+ Nxf6 8. Bg2 Bb7 9. 0-0 c5 10. b3 e6 11. Bb2 Qd5 12. Ne1 Qd7 13. Bxb7 Qxb7 14. Qf3 Qxf3 15. Nxf3 Bd6 16. Rad1 Ke7 17. Rfe1 Rhd8 18. c4 Rac8 19. d4 cxd4 20. Nxd4 g6 21. Nb5 Bb4 22. Bc3 Bxc3 23. Nxc3 Nd7 24. Kf1 f5 25. Nb5 a6 26. Nd4 Nc5 27. b4 Ne4 28. b5 Kf6 29. bxa6 Rxc4 30. a7 Ra8 31. Nb5 Nc5 32. Rd6 Ra4 33. Rxb6 Rxa2 34. Rb8 R2xa7 35. Nxa7 Rxb8 36. Nc6 Rb2 37. Ne5 Ne4 38. Nd3 Rd2 39. Re3 Rd1+ 40. Kg2 Rd2 41. Kf1 Rd1+ 42. Kg2 h6 43. Rf3 g5 44. h3 e5 45. Nb2 Rd2 46. Nc4 Rd4 47. Ne3 Nd6 48. Ng4+ Ke6 49. Nxh6 Rd2 50. Kf1 Rb2 51. Kg2 e4 52. Ra3 Kf6 53. Ra6 Rd2 54. Kf1 Ke5 55. Ke1 Rd4 56. Ng8 f4 57. Ne7 Rd3 58. Nc6+ Ke6 59. gxf4 gxf4 60. h4 Rh3 61. Nd4+ Kd5 62. h5 Nc4 0-1

[Event "Pan American-ch U16 10th"]
[Site "Caioba"]
[Date "1994.04.??"]
[Round "6"]
[White "Demasi, Joao Otavio"]
[Black "Van Riemsdijk, Vinicius Paulo"]
[Result "0-1"]
[ECO "C30"]
[PlyCount "40"]
[EventDate "1994.04.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. f4 e5 2. fxe5 d6 3. Nf3 dxe5 4. e4 Nf6 5. Nc3 Bc5 6. Nxe5 Qd4 7. Nd3 Bb6 8. Qf3 Bg4 9. Qe3 Qd7 10. Qg5 0-0 11. Be2 Bxe2 12. Kxe2 Re8 13. b3 Nxe4 14. Nxe4 Rxe4+ 15. Kf1 Rg4 16. Qh5 Nc6 17. Bb2 Nd4 18. Ne5 Rf4+ 19. Nf3 Nxf3 20. gxf3 Qxd2 0-1

[Event "Pan American-ch U16 10th"]
[Site "Caioba"]
[Date "1994.04.??"]
[Round "2"]
[White "Granara Barreto, Sebastian A"]
[Black "Demasi, Joao Otavio"]
[Result "0-1"]
[ECO "B50"]
[PlyCount "50"]
[EventDate "1994.04.05"]
[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. b3 c5 3. Bb2 Nc6 4. Nf3 d6 5. Bb5 e5 6. Nc3 Nf6 7. Qe2 Bd7 8. a3 g6 9. h3 Bg7 10. 0-0-0 a6 11. Bd3 b5 12. Nb1 Na5 13. Qe3 h5 14. Qe2 Be6 15. Ng5 Bxb3 16. Bxb5+ axb5 17. Qxb5+ Kf8 18. cxb3 Rb8 19. Qa4 Nxb3+ 20. Kc2 Qb6 21. Qc4 Rb7 22. Bc3 Bh6 23. Nf3 Kg7 24. Kd3 Nd4 25. a4 d5 0-1

