[Event "Florianopolis op 10th"]
[Site "Florianopolis"]
[Date "2024.01.26"]
[Round "8"]
[White "Fischer, Ivo Lucio"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "1860"]
[BlackElo "1627"]
[PlyCount "83"]
[EventDate "2024.01.20"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 c5 8. Qd2 Qa5 9. Rc1 0-0 10. d5 Rd8 11. Nf3 Nc6 12. Bd3 e6 13. c4 Nb4 14. Bb1 exd5 15. exd5 b6 16. 0-0 Bg4 17. Ng5 Qa3 18. h3 Bf5 19. Bxf5 gxf5 20. Qe2 h6 21. Nf3 Re8 22. Qd2 Kh7 23. Nh4 Qd3 24. Qxd3 Nxd3 25. Rcd1 Nb2 26. Rc1 Nd3 27. Rc2 f4 28. Bc1 Nb4 29. Rd2 Re4 30. a3 Na6 31. Rc2 Nc7 32. Nf5 Ne8 33. f3 Re5 34. Nxg7 Nxg7 35. Bxf4 Ree8 36. Kf2 Nf5 37. Re2 Nd4 38. Rxe8 Rxe8 39. Re1 Rxe1 40. Kxe1 Nc2+ 41. Kd1 Nd4 42. d6 1-0

[Event "Florianopolis op 10th"]
[Site "Florianopolis"]
[Date "2024.01.25"]
[Round "7"]
[White "Vaz, Osvaldo Jose"]
[Black "Salamanca Paraguayo, Mateo"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1627"]
[BlackElo "1182"]
[PlyCount "57"]
[EventDate "2024.01.20"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. b4 Nxb4 4. c3 Nc6 5. d4 e6 6. d5 exd5 7. exd5 Qe7+ 8. Be2 Ne5 9. 0-0 Nf6 10. Re1 d6 11. Bf4 Qc7 12. Nxe5 dxe5 13. Bxe5 Bd6 14. Bxf6 gxf6 15. Bb5+ Kd8 16. Qf3 Bxh2+ 17. Kh1 Be5 18. d6 Qb6 19. Rxe5 f5 20. Na3 a6 21. d7 axb5 22. dxc8Q+ Kxc8 23. c4 Qh6+ 24. Kg1 Kb8 25. Nxb5 f4 26. Rae1 Qc6 27. Qxf4 Kc8 28. Re8+ Kd7 29. Qxf7# 1-0

[Event "Florianopolis op 10th"]
[Site "Florianopolis"]
[Date "2024.01.24"]
[Round "6"]
[White "Koinski, Carlos Cesar"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "A07"]
[WhiteElo "1371"]
[BlackElo "1627"]
[PlyCount "75"]
[EventDate "2024.01.20"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d3 0-0 5. 0-0 d5 6. c3 c6 7. Nbd2 Qc7 8. Qc2 e5 9. Re1 Re8 10. e4 Nbd7 11. Kh1 b6 12. Kg1 Bb7 13. d4 Rad8 14. dxe5 Nxe5 15. Nxe5 Rxe5 16. Nb3 Ree8 17. Bf4 Qc8 18. exd5 Nxd5 19. Be3 Nxe3 20. Rxe3 Rxe3 21. fxe3 Bh6 22. Qf2 Ba6 23. Re1 c5 24. Nd2 Qe6 25. b3 Bd3 26. c4 Kg7 27. Kh1 Bf5 28. Bd5 Qd7 29. e4 Be6 30. Nf3 f6 31. Nh4 Bg5 32. Nf3 Bh6 33. Nh4 Bg5 34. Ng2 Bh6 35. Nf4 Bxf4 36. Qxf4 Qd6 37. Qf2 Qe5 38. Qd2 1/2-1/2

[Event "Florianopolis op 10th"]
[Site "Florianopolis"]
[Date "2024.01.23"]
[Round "5"]
[White "Vaz, Osvaldo Jose"]
[Black "Pedroso, Denian"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1627"]
[BlackElo "1924"]
[PlyCount "54"]
[EventDate "2024.01.20"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. b4 Nxb4 4. c3 Nc6 5. d4 d5 6. exd5 Qxd5 7. Na3 Bg4 8. Be2 e6 9. c4 Qd7 10. d5 Bxf3 11. Bxf3 Nd4 12. 0-0 e5 13. Re1 Bd6 14. Rb1 Ne7 15. Nb5 Nxb5 16. Rxb5 0-0 17. Bb2 Ng6 18. Be4 f5 19. Bb1 Rae8 20. g3 e4 21. Qh5 Be5 22. Bc1 Bd4 23. Be3 Ne5 24. Qe2 Nf3+ 25. Kh1 f4 26. Qf1 fxe3 27. Re2 Nd2 0-1

[Event "Florianopolis op 10th"]
[Site "Florianopolis"]
[Date "2024.01.22"]
[Round "4"]
[White "Monteiro, Melissa"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "1340"]
[BlackElo "1627"]
[PlyCount "64"]
[EventDate "2024.01.20"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nf3 c5 6. Be3 Nc6 7. Bb5 cxd4 8. Bxd4 Nxd4 9. Qxd4 a6 10. Bxd7+ Bxd7 11. 0-0 Rc8 12. Rac1 Be7 13. Rfe1 0-0 14. Ne2 f6 15. Nf4 Rc4 16. Qd2 fxe5 17. Nh3 e4 18. b3 Rc8 19. Ne5 Be8 20. c4 Qb6 21. Qc2 Qd4 22. Qc3 Qxc3 23. Rxc3 Bb4 24. Rec1 Bxc3 25. Rxc3 d4 26. Rc1 Rc5 27. Ng4 h5 28. Ne3 dxe3 29. fxe3 b5 30. Nf2 Bc6 31. Kf1 bxc4 32. bxc4 Rxc4 0-1

[Event "Florianopolis op 10th"]
[Site "Florianopolis"]
[Date "2024.01.21"]
[Round "2"]
[White "Nunes, Alice"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "1274"]
[BlackElo "1627"]
[PlyCount "86"]
[EventDate "2024.01.20"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 e6 3. Nf3 c5 4. c3 Nc6 5. e3 Qb6 6. Qb3 d5 7. Qxb6 axb6 8. Bb5 Be7 9. Nbd2 0-0 10. h3 h6 11. Bxc6 bxc6 12. Bg3 Ba6 13. Ne5 Rfc8 14. f4 cxd4 15. exd4 c5 16. Nef3 cxd4 17. Nxd4 Nh5 18. Bh2 Bh4+ 19. Kd1 Ng3 20. Bxg3 Bxg3 21. f5 e5 22. Ne2 Bf2 23. Rc1 Bd3 24. Ra1 b5 25. Rf1 Bh4 26. g4 b4 27. Rf3 e4 28. Rf4 Bg5 29. Rf1 Bf6 30. Rg1 bxc3 31. bxc3 Bxe2+ 32. Kxe2 Bxc3 33. Rad1 Rxa2 34. Ke3 d4+ 35. Kxe4 Rxd2 36. Rxd2 Bxd2 37. Kxd4 Re8 38. Rg3 Re1 39. Kd3 Bg5 40. Rf3 Kf8 41. Kd4 Ke7 42. Rf2 Be3+ 43. Kd5 Bxf2 0-1

[Event "Florianopolis op 10th"]
[Site "Florianopolis"]
[Date "2024.01.20"]
[Round "1"]
[White "Vaz, Osvaldo Jose"]
[Black "Filgueiras, Nathan Felipe"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1627"]
[BlackElo "2321"]
[PlyCount "52"]
[EventDate "2024.01.20"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. b4 Nxb4 4. c3 Nc6 5. d4 d5 6. exd5 Qxd5 7. Na3 Bg4 8. Bc4 Qe4+ 9. Be3 cxd4 10. cxd4 e6 11. Nb5 Rc8 12. 0-0 Nf6 13. Qb3 Bxf3 14. gxf3 Qf5 15. Bd3 Qxf3 16. Rfe1 Be7 17. Be2 Qf5 18. Bd3 Qg4+ 19. Kh1 Qf3+ 20. Kg1 0-0 21. Bd2 Qg4+ 22. Kh1 Nxd4 23. Nxd4 Qxd4 24. Be3 Qd5+ 25. Qxd5 Nxd5 26. Bxa7 Bc5 0-1

[Event "Campos do Jordao op"]
[Site "Campos do Jordao"]
[Date "2024.01.14"]
[Round "4"]
[White "Silva, Davi Maia"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1800"]
[BlackElo "1627"]
[PlyCount "54"]
[EventDate "2024.01.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB04_2024"]
[SourceDate "2023.10.16"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. c3 c6 6. Ne2 Nf6 7. 0-0 Bg4 8. Qb3 Qc7 9. h3 Bh5 10. Re1 0-0 11. Bg5 Nbd7 12. Qc2 Rfe8 13. Nd2 Re6 14. Nb3 b6 15. Bh4 Rae8 16. Qd2 Ne4 17. Bxe4 Rxe4 18. Ng3 Bxg3 19. Bxg3 Qd8 20. Rxe4 Rxe4 21. Re1 Nf6 22. f3 Rxe1+ 23. Qxe1 Kf8 24. Bh4 Qe7 25. Qxe7+ Kxe7 26. Kf2 Ke6 27. Bg3 Nd7 1/2-1/2

[Event "Campos do Jordao op"]
[Site "Campos do Jordao"]
[Date "2024.01.14"]
[Round "5"]
[White "Vaz, Osvaldo Jose"]
[Black "Do Nascimento, Richard Marx R"]
[Result "1-0"]
[ECO "C27"]
[WhiteElo "1627"]
[BlackElo "1781"]
[PlyCount "29"]
[EventDate "2024.01.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB04_2024"]
[SourceDate "2023.10.16"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.16"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. Nc3 d6 5. f4 Ng4 6. f5 Nf2 7. Qh5 0-0 8. Nf3 g6 9. fxg6 hxg6 10. Qxg6+ Kh8 11. Qh6+ Kg8 12. Ng5 Qxg5 13. Bxg5 Nxh1 14. Qg6+ Kh8 15. Bf6# 1-0

[Event "Campos do Jordao op"]
[Site "Campos do Jordao"]
[Date "2024.01.13"]
[Round "2"]
[White "Da Silva, Lucas Pereira Mende"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "1974"]
[BlackElo "1627"]
[PlyCount "61"]
[EventDate "2024.01.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB04_2024"]
[SourceDate "2023.10.16"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 c5 8. Rc1 0-0 9. Qd2 Qc7 10. h3 b6 11. Nf3 Nd7 12. Bd3 Bb7 13. 0-0 Rfd8 14. Bh6 Nf6 15. Rfe1 Nh5 16. Bxg7 Nxg7 17. Qh6 Ne6 18. g3 f6 19. Bc4 Qc8 20. d5 Nf8 21. Rcd1 Ba6 22. e5 Qf5 23. exf6 Qxf6 24. Bxa6 Qxf3 25. Rxe7 Qf6 26. Rde1 Kh8 27. Bc4 Rd7 28. d6 Rad8 29. Rxd7 Rxd7 30. Re8 Rd8 31. d7 1-0

[Event "Campos do Jordao op"]
[Site "Campos do Jordao"]
[Date "2024.01.13"]
[Round "3"]
[White "Vaz, Osvaldo Jose"]
[Black "Teixeira, Maria Luiza Prado"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1627"]
[BlackElo "1800"]
[PlyCount "74"]
[EventDate "2024.01.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB04_2024"]
[SourceDate "2023.10.16"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. b4 Nxb4 4. c3 Nc6 5. d4 cxd4 6. cxd4 e6 7. Nc3 Bb4 8. Bd2 Nf6 9. Bd3 d5 10. e5 Bxc3 11. Bxc3 Ne4 12. Rc1 Nxc3 13. Rxc3 0-0 14. 0-0 f6 15. Re1 fxe5 16. dxe5 Bd7 17. Bb1 Qe8 18. Ng5 h6 19. Rh3 Ne7 20. Qg4 Nf5 21. Nf3 Rc8 22. Nd2 Qe7 23. f4 Qc5+ 24. Kh1 Qf2 25. Nf3 Rc3 26. Rg1 Be8 27. Nh4 Rxh3 28. Nxf5 exf5 29. Qxh3 Qxf4 30. Qc3 Bc6 31. a3 Re8 32. Re1 d4 33. Qc4+ Kh8 34. Rf1 Qxe5 35. Bxf5 Bb5 36. Qf7 Bxf1 37. Bd7 Bxg2+ 0-1

[Event "Campos do Jordao op"]
[Site "Campos do Jordao"]
[Date "2024.01.12"]
[Round "1"]
[White "Vaz, Osvaldo Jose"]
[Black "Haraguchi, Melissa Mayumi Alve"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1627"]
[BlackElo "1751"]
[PlyCount "75"]
[EventDate "2024.01.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB04_2024"]
[SourceDate "2023.10.16"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.16"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. Bb3 Bg4 6. Qe2 Bd6 7. 0-0 0-0 8. Bg5 Nbd7 9. h3 Be6 10. c3 Qc7 11. Re1 Rfe8 12. Nbd2 b5 13. Rac1 dxe4 14. dxe4 Bxb3 15. Nxb3 a5 16. Nbd2 Rab8 17. Nf1 Nh5 18. Ne3 Nf4 19. Qd2 Nc5 20. Nf5 Nfd3 21. Nxd6 Qxd6 22. b4 Ne6 23. Re3 Nxg5 24. Nxg5 Qg6 25. Rxd3 f6 26. Nf3 Qxe4 27. a3 h6 28. Rd1 Kh7 29. Rd7 a4 30. Qd6 Qf5 31. Qxc6 e4 32. Nd4 Qg6 33. Ne6 f5 34. Rxg7+ Qxg7 35. Nxg7 Kxg7 36. Rd7+ Kg8 37. Qg6+ Kf8 38. Rf7# 1-0

[Event "Pindamonhangaba Rezende Memorial"]
[Site "Pindamonhangaba"]
[Date "2023.08.04"]
[Round "2"]
[White "Vaz, Osvaldo Jose"]
[Black "Rothebarth, Ana Vitoria de Paul"]
[Result "0-1"]
[ECO "C28"]
[WhiteElo "1635"]
[BlackElo "1983"]
[PlyCount "42"]
[EventDate "2023.08.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nc3 Bb4 5. Nge2 d5 6. exd5 Nxd5 7. 0-0 Be6 8. Ne4 Qd7 9. a3 Be7 10. b4 f5 11. Nc5 Bxc5 12. bxc5 Nde7 13. Bb5 0-0 14. Bb2 a6 15. Ba4 Ng6 16. Qd2 Bd5 17. Qg5 f4 18. g4 Bf3 19. Nc3 Bxg4 20. Ne4 Bf3 21. Ng3 Qh3 0-1

[Event "Rio de Janeiro op 2nd"]
[Site "Rio de Janeiro"]
[Date "2023.05.02"]
[Round "1"]
[White "Gauche, Charles"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "C14"]
[WhiteElo "2191"]
[BlackElo "1639"]
[PlyCount "83"]
[EventDate "2023.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 0-0 8. Nf3 a6 9. Bd3 h6 10. Qd2 c5 11. dxc5 Nc6 12. 0-0-0 b5 13. Ne2 Nxc5 14. Kb1 Qa7 15. Ned4 Bd7 16. Nxc6 Bxc6 17. Nd4 Bd7 18. g4 b4 19. f5 f6 20. exf6 Rxf6 21. g5 hxg5 22. fxe6 Nxe6 23. Nxe6 Bxe6 24. Qxg5 Raf8 25. Qh4 Bf5 26. Bxf5 Rxf5 27. Qxb4 a5 28. Qc3 a4 29. a3 Qb7 30. Rd4 Qa6 31. Rhd1 Rc8 32. Qd3 Qxd3 33. R1xd3 Rf1+ 34. Rd1 Rxd1+ 35. Rxd1 Rc5 36. Rd4 Ra5 37. Rf4 Kh7 38. h4 Kg6 39. Kc1 Kh5 40. Kd2 Rb5 41. Rb4 Rc5 42. Rxa4 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.29"]
[Round "10"]
[White "Carvalho, Felipe Lobo C"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "A47"]
[WhiteElo "2068"]
[BlackElo "1660"]
[PlyCount "79"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 e6 2. Bf4 Nf6 3. e3 b6 4. Nf3 Bb7 5. h3 d6 6. Be2 Nbd7 7. 0-0 Be7 8. c4 0-0 9. Nc3 a6 10. Qc2 Rc8 11. b4 c6 12. a4 d5 13. c5 Ra8 14. a5 b5 15. Bd3 Re8 16. g4 Nf8 17. Bh2 Ng6 18. Kh1 Nd7 19. Rg1 Ndf8 20. g5 f5 21. gxf6 Bxf6 22. Be5 Ra7 23. Ne2 Bc8 24. Rg2 Bxe5 25. dxe5 Nh4 26. Nxh4 Qxh4 27. Nd4 Rf7 28. Kh2 Bd7 29. Rag1 Ng6 30. Bxg6 hxg6 31. Qxg6 Ree7 32. Qc2 Rf8 33. Rg3 Ref7 34. f4 Qh7 35. Rg6 Kh8 36. Qg2 Rg8 37. Qg5 Rf5 38. Nxf5 exf5 39. Qe7 Bc8 40. R1g5 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.26"]
[Round "6"]
[White "Pimenta, Elisandro da Silva"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "1855"]
[BlackElo "1660"]
[PlyCount "59"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bb4 9. Qd2 Nc5 10. Nxc6 bxc6 11. Bxc5 Bxc5 12. Na4 Be7 13. Bd3 0-0 14. 0-0 c5 15. c3 Qc7 16. Qe2 f6 17. b3 Bd7 18. Nb2 Rab8 19. c4 Qb6 20. Rae1 Rf7 21. Kh1 d4 22. f5 fxe5 23. fxe6 Rxf1+ 24. Rxf1 Qxe6 25. Bf5 Qd6 26. Bxd7 Qxd7 27. Qxe5 Rf8 28. Rxf8+ Kxf8 29. Nd3 Qg4 30. Qb8+ 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.24"]
[Round "2"]
[White "Torrico Castro, Raikonen Dairo"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "C14"]
[WhiteElo "1286"]
[BlackElo "1660"]
[PlyCount "47"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 c5 8. Nb5 Na6 9. Nd6+ Kf8 10. c3 Qd8 11. Nf3 h6 12. f5 Nc7 13. fxe6 Nxe6 14. dxc5 Nc7 15. b4 g6 16. Be2 Qe7 17. 0-0 Kg7 18. Qd4 f6 19. exf6+ Nxf6 20. Rae1 Be6 21. Bd3 Raf8 22. Nh4 Kg8 23. Nxg6 Qg7 24. Nxf8 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.24"]
[Round "3"]
[White "Vaz, Osvaldo Jose"]
[Black "Ramos, Rafael Cabreira"]
[Result "1-0"]
[ECO "C27"]
[WhiteElo "1660"]
[BlackElo "1161"]
[PlyCount "99"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. Nc3 d6 5. Na4 Bb6 6. Nxb6 axb6 7. Ne2 Be6 8. Bxe6 fxe6 9. 0-0 Nc6 10. Bg5 0-0 11. f4 exf4 12. Nxf4 Qe8 13. c3 h6 14. Bxf6 Rxf6 15. Qb3 Kh8 16. a3 Qe7 17. Nh5 Rxf1+ 18. Rxf1 Qg5 19. Qd1 Qe3+ 20. Kh1 Ne5 21. d4 Nd3 22. Qf3 Qxf3 23. Rxf3 Nxb2 24. Rf7 Rxa3 25. h3 Rxc3 26. Rxg7 Nd1 27. Rg6 Nf2+ 28. Kh2 Nxe4 29. Rxe6 Re3 30. Re8+ Kh7 31. Rxe4 Rxe4 32. Nf6+ Kg6 33. Nxe4 b5 34. Kg3 b4 35. Nd2 c5 36. Kf4 Kf6 37. Ke4 Ke6 38. d5+ Kf6 39. Nc4 Ke7 40. Nb6 b3 41. Kd3 Kd8 42. Kc3 Kc7 43. Na4 b5 44. Nb2 c4 45. g4 Kd7 46. Nd1 Ke7 47. Kb4 Kf6 48. Kxb5 b2 49. Nxb2 c3 50. Nd3 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.23"]
[Round "1"]
[White "Vaz, Osvaldo Jose"]
[Black "Languidey, Simon Alejandro"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1660"]
[BlackElo "2403"]
[PlyCount "122"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d3 g6 6. h3 Bg7 7. Be3 0-0 8. 0-0 e5 9. Nbd2 Re8 10. Re1 Bd7 11. Nf1 b6 12. Bg5 h6 13. Bh4 g5 14. Bg3 d5 15. Qc2 d4 16. Rac1 Rc8 17. Qd1 Nh7 18. N1d2 Nf8 19. Nh2 dxc3 20. bxc3 Ng6 21. Nc4 Be6 22. Ne3 Nf4 23. c4 Nd4 24. Bxf4 exf4 25. Nd5 Qd7 26. Ng4 Bxd5 27. cxd5 Rcd8 28. Bf3 Qd6 29. Nh2 b5 30. Nf1 a5 31. Nd2 a4 32. Nb1 Qb6 33. Nd2 Qa7 34. Bg4 b4 35. Nc4 Nb5 36. Qf3 Nc3 37. a3 b3 38. e5 Nxd5 39. e6 Nf6 40. Ne5 fxe6 41. Nc6 Qd7 42. Nxd8 Nxg4 43. Qxg4 Rxd8 44. Rxc5 b2 45. Rc4 Rb8 46. Rb1 Rb3 47. Qf3 Rxa3 48. Qe4 Ra1 49. d4 a3 50. Kh2 Rxb1 51. Qxb1 Qb7 52. Ra4 Bf8 53. Qg6+ Kh8 54. Qb1 Kg7 55. d5 exd5 56. Ra5 Be7 57. h4 f3 58. h5 Qc7+ 59. g3 Qxa5 60. Qg6+ Kf8 61. Qxh6+ Ke8 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2022.09.11"]
[Round "7"]
[White "Lora, Miguel Said Brasil"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1331"]
[BlackElo "1645"]
[PlyCount "58"]
[EventDate "2022.09.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bg5 Be7 6. Bd3 Bg4 7. 0-0 0-0 8. c3 Re8 9. Nbd2 Nbd7 10. Qc2 Nf8 11. Rfe1 c6 12. Ne5 Bh5 13. Bf5 Qc7 14. g4 Bxg4 15. Bxg4 Nxg4 16. Bxe7 Nxe5 17. Bxf8 Ng4 18. Nf3 Rxf8 19. Qf5 Nf6 20. Kh1 Ne4 21. Ne5 f6 22. Nd3 Rae8 23. f3 Nd6 24. Qg4 Qf7 25. Nf4 f5 26. Qg3 Qf6 27. Rg1 Rf7 28. Nh5 Qh6 29. Rae1 Qxh5 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2022.09.11"]
[Round "6"]
[White "Vaz, Osvaldo Jose"]
[Black "De Souza, Mayara Cardozo Lima"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1645"]
[BlackElo "1037"]
[PlyCount "52"]
[EventDate "2022.09.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. Bc4 e6 6. Nf3 c5 7. 0-0 Be7 8. Qe2 0-0 9. Bf4 Nc6 10. Rad1 cxd4 11. Nb5 Bc5 12. Nc7 e5 13. Nxa8 exf4 14. c3 Bg4 15. b4 Bxf3 16. Qxf3 Ne5 17. Qxf4 Nxc4 18. Nc7 Bd6 19. Qxd4 Qxc7 20. Qh4 Rd8 21. Kh1 Ne5 22. Rd4 Ng6 23. Qh3 Nf4 24. Qf5 Ne2 25. Rd3 Nxc3 26. Rc1 Bxb4 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2022.09.10"]
[Round "5"]
[White "Fernandini, Felipe Piacente"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "1403"]
[BlackElo "1645"]
[PlyCount "62"]
[EventDate "2022.09.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Be3 Nc6 7. Nf3 cxd4 8. Nxd4 Be7 9. Qg4 0-0 10. Bd3 Nc5 11. Be2 f6 12. exf6 Rxf6 13. Nxc6 bxc6 14. Bxc5 Bxc5 15. Bd3 e5 16. Qh5 e4 17. Nxe4 Qe7 18. 0-0-0 dxe4 19. Bxe4 Qxe4 20. Qxc5 Bf5 21. Rhe1 Qxf4+ 22. Kb1 Qg5 23. Rd7 Qg6 24. Rb7 Re8 25. Rd1 Rfe6 26. Qc4 Kh8 27. Qc3 Re2 28. Ka1 h6 29. a3 Rxc2 30. Qa5 Qg5 31. Qa4 Rc1+ 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2022.09.10"]
[Round "4"]
[White "Vaz, Osvaldo Jose"]
[Black "Figueira, Leandro Lucas"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "1645"]
[BlackElo "1410"]
[PlyCount "113"]
[EventDate "2022.09.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 d5 5. e5 Bb4+ 6. Nc3 Ne7 7. Bd3 Nbc6 8. Nf3 b6 9. 0-0 Bb7 10. Ne2 Ng6 11. Be3 Rc8 12. Rc1 0-0 13. Nf4 Nce7 14. a3 Nxf4 15. Bxf4 Ng6 16. Be3 Be7 17. g3 Qd7 18. h4 Rxc1 19. Bxc1 Rc8 20. Ng5 Bxg5 21. Bxg5 Bc6 22. Re1 Bb5 23. Bb1 h6 24. Bd2 Ba4 25. b3 Bb5 26. a4 Ba6 27. Qg4 Kh8 28. f4 Ne7 29. Qh5 Nf5 30. Bxf5 exf5 31. g4 Bd3 32. g5 Kh7 33. Qf3 Be4 34. Qg3 h5 35. Qe3 g6 36. Rc1 Rxc1+ 37. Bxc1 Qc6 38. Qd2 Kg7 39. Kf2 Kf8 40. Ba3+ Ke8 41. a5 Qc2 42. Qxc2 Bxc2 43. axb6 axb6 44. b4 Kd7 45. Ke2 Kc6 46. Kd2 Ba4 47. Kc3 Kb5 48. Bc1 Bd1 49. Bd2 Ka4 50. Be1 Ka3 51. Bd2 Ba4 52. Be1 Ka2 53. Bd2 Kb1 54. Be3 Bb5 55. Bd2 Bc4 56. Be3 Ka2 57. Bd2 1/2-1/2

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2022.09.09"]
[Round "3"]
[White "De Carvalho, Jose Jorge"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2160"]
[BlackElo "1645"]
[PlyCount "49"]
[EventDate "2022.09.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 Be7 8. Nf3 0-0 9. 0-0 f5 10. Nf4 Nb6 11. dxc5 Bxc5 12. b4 Be7 13. b5 Na5 14. Nd4 Nac4 15. Nfxe6 Bxe6 16. Nxe6 Qd7 17. Nxf8 Rxf8 18. Re1 Qe6 19. a4 Rc8 20. Be3 Nb2 21. Qe2 N2xa4 22. Bxb6 Nxc3 23. Qf3 Qxb6 24. Qxf5 g6 25. Qxc8+ 1-0

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2022.09.09"]
[Round "2"]
[White "Vaz, Osvaldo Jose"]
[Black "Dianda, Joao Carlos"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1645"]
[BlackElo "2000"]
[PlyCount "128"]
[EventDate "2022.09.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 g6 5. Nf3 Bg7 6. h3 0-0 7. 0-0 Nbd7 8. Bg5 h6 9. Be3 b6 10. Qd2 Kh7 11. g4 d5 12. e5 Ne4 13. Qc2 Qc7 14. Nbd2 cxd4 15. cxd4 Qxc2 16. Bxc2 Nxd2 17. Nxd2 Ba6 18. Rfe1 Rac8 19. Rac1 e6 20. Nf1 Nb8 21. Ng3 Nc6 22. a3 Na5 23. b3 Rc6 24. b4 Nc4 25. a4 b5 26. Bb3 Rfc8 27. f4 Bf8 28. Rb1 Bxb4 29. Re2 Nxe3 30. Rxe3 Rc1+ 31. Rxc1 Rxc1+ 32. Kf2 Bd2 33. Rf3 Be1+ 34. Kg2 bxa4 35. Bxa4 Rc4 36. Be8 Rc2+ 37. Kg1 Kg8 38. h4 Rc3 39. Kg2 Rc2+ 40. Kg1 Bc3 41. h5 Bxd4+ 42. Kh1 gxh5 43. Nxh5 Be2 44. Rg3 Kf8 45. Bd7 Bf2 46. Ra3 Bc5 47. Rg3 Bf2 48. Ra3 Bxg4 49. Nf6 h5 50. Rb3 Bb6 51. Ba4 Kg7 52. Rg3 Rc1+ 53. Kh2 Kf8 54. Bb5 Rc2+ 55. Kh1 Bf2 56. Rb3 Bf5 57. Bd3 Rc1+ 58. Kh2 Bg1+ 59. Kg2 Bxd3 60. Rb8+ Kg7 61. Rg8+ Kh6 62. Rh8+ Kg6 63. Rxh5 Be4+ 64. Kg3 Rc3+ 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2022.09.08"]
[Round "1"]
[White "Furtado, Ian"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1666"]
[BlackElo "1645"]
[PlyCount "56"]
[EventDate "2022.09.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 e6 2. Bf4 d5 3. e3 c5 4. Bd3 Bd6 5. Bg3 Nf6 6. Nd2 c4 7. Be2 Nc6 8. Ngf3 Qc7 9. Bxd6 Qxd6 10. e4 Nxe4 11. Nxe4 dxe4 12. Ng5 Qxd4 13. Qxd4 Nxd4 14. Bxc4 Nxc2+ 15. Kd2 Nxa1 16. Bb5+ Ke7 17. Rxa1 f5 18. Rc1 h6 19. Rc7+ Kf6 20. Nf7 Rf8 21. Nd6 Rd8 22. Rf7+ Kg6 23. Be8 Rxe8 24. Nxe8 Kxf7 25. Nd6+ Ke7 26. Nc4 Bd7 27. Ne5 Rd8 28. Ng6+ Kf6 0-1

[Event "Niteroi op 2nd"]
[Site "Niteroi"]
[Date "2022.09.07"]
[Round "9"]
[White "Vaz, Osvaldo Jose"]
[Black "Dos Santos, Thiago Lopes Verbic"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1645"]
[BlackElo "1865"]
[PlyCount "59"]
[EventDate "2022.09.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. 0-0 Be7 8. h3 Bh5 9. Be3 cxd4 10. cxd4 0-0 11. Nc3 Qd8 12. Qb3 b6 13. Rad1 Nd5 14. Nxd5 Qxd5 15. Qxd5 exd5 16. g4 Bg6 17. Ne5 f6 18. Nxg6 hxg6 19. Rc1 f5 20. f4 Rd8 21. Bd3 fxg4 22. hxg4 Kf7 23. Rc2 Nd7 24. g5 Bd6 25. Rc3 Nb8 26. Rc2 a5 27. f5 gxf5 28. Bxf5 Ke7 29. g6 Nd7 30. Re2 1-0

[Event "Niteroi op 2nd"]
[Site "Niteroi"]
[Date "2022.09.06"]
[Round "8"]
[White "Borsato, Ana Carolina Teodor"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "1845"]
[BlackElo "1645"]
[PlyCount "74"]
[EventDate "2022.09.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Qg4 Nc6 5. Nf3 Qc7 6. Bd3 cxd4 7. Bf4 Nge7 8. 0-0 Ng6 9. Bxg6 hxg6 10. Nbd2 Be7 11. Rfe1 Bd7 12. Nb3 0-0-0 13. Nbxd4 Nxd4 14. Nxd4 Kb8 15. Bg3 Ka8 16. c3 Rh5 17. Qf3 Rf8 18. a4 Bh4 19. Bxh4 Rxh4 20. h3 g5 21. Qg3 Qd8 22. Nf3 Rh5 23. Qg4 Rfh8 24. Ra3 f5 25. Qb4 g4 26. Rb3 Qc7 27. Nd4 gxh3 28. g3 Rg5 29. Qe7 Rg6 30. Qf7 Rgh6 31. Kh2 Qc8 32. Rb4 g5 33. Qe7 g4 34. Ne2 Bc6 35. Nf4 R8h7 36. Qc5 Rc7 37. Qd4 Rh8 1/2-1/2

[Event "Niteroi op 2nd"]
[Site "Niteroi"]
[Date "2022.09.05"]
[Round "7"]
[White "Vaz, Osvaldo Jose"]
[Black "Karoly, Carlos Acacio Gomes"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "1645"]
[BlackElo "1854"]
[PlyCount "61"]
[EventDate "2022.09.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 c6 5. Qd2 Nbd7 6. Bd3 b5 7. Nf3 a6 8. 0-0 Bg7 9. Ne2 Bb7 10. Ng3 Qc7 11. c4 Ng4 12. Rac1 Nxe3 13. fxe3 Qb6 14. a3 c5 15. Qf2 0-0 16. b3 Rac8 17. Kh1 h6 18. Qe2 b4 19. axb4 cxd4 20. exd4 Bxd4 21. Nxd4 Qxd4 22. Rcd1 Qe5 23. Bb1 Nf6 24. Qe3 Kh7 25. Rde1 h5 26. Rf4 Rb8 27. Ref1 Bc8 28. Qd2 Be6 29. Rh4 Kg7 30. Rf5 Qa1 31. Rf1 1/2-1/2

[Event "Niteroi op 2nd"]
[Site "Niteroi"]
[Date "2022.09.04"]
[Round "6"]
[White "Tamarozi, Isabelle"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "C14"]
[WhiteElo "1965"]
[BlackElo "1645"]
[PlyCount "61"]
[EventDate "2022.09.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 c5 8. Nb5 Na6 9. Nd6+ Kf8 10. c3 Nc7 11. dxc5 Nxc5 12. Qd4 b6 13. Nf3 h6 14. b4 Nb7 15. Nxb7 Bxb7 16. a4 Ba6 17. b5 Bb7 18. Bd3 g6 19. 0-0 Kg7 20. g3 Qc5 21. Nd2 Qxd4+ 22. cxd4 Rac8 23. Rfc1 Rhd8 24. a5 Na8 25. Rxc8 Bxc8 26. axb6 Nxb6 27. Rxa7 Bd7 28. Rb7 Na4 29. Nb3 Be8 30. Nc5 Nxc5 31. dxc5 1-0

[Event "Niteroi op 2nd"]
[Site "Niteroi"]
[Date "2022.09.04"]
[Round "5"]
[White "Vaz, Osvaldo Jose"]
[Black "Petrenko, Willy"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1645"]
[BlackElo "1876"]
[PlyCount "79"]
[EventDate "2022.09.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Be7 4. Nc3 h6 5. f4 d6 6. Nf3 Bg4 7. fxe5 Bxf3 8. Qxf3 dxe5 9. 0-0 0-0 10. Nd5 Nbd7 11. Kh1 c6 12. Nxe7+ Qxe7 13. a4 Nh7 14. Be3 Ndf6 15. Rf2 a6 16. a5 Rad8 17. Raf1 Rd7 18. Qg3 Kh8 19. Rf3 Ng8 20. Qf2 Ng5 21. Bc5 Qe8 22. Rg3 Ne7 23. h4 Nh7 24. Bxf7 Qd8 25. Rf3 Qxa5 26. Be6 Rxf3 27. gxf3 Qd8 28. Bxd7 Qxd7 29. Qg3 Nf6 30. Rg1 Neg8 31. Kh2 Nh5 32. Qxe5 Qf7 33. Qf5 Qc7+ 34. e5 Qa5 35. b4 Qa2 36. Qxh5 Qxc2+ 37. Rg2 Qxd3 38. Qg4 Qh7 39. Bd4 Ne7 40. Qd7 1-0

[Event "Niteroi op 2nd"]
[Site "Niteroi"]
[Date "2022.09.03"]
[Round "4"]
[White "Lissandrello, Pedro"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "A14"]
[BlackElo "1645"]
[PlyCount "38"]
[EventDate "2022.09.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. 0-0 0-0 6. cxd5 exd5 7. d4 Bf5 8. h3 Nbd7 9. Nc3 c6 10. Bf4 Re8 11. Qb3 Nb6 12. e3 Rc8 13. Rfe1 Bd6 14. Bxd6 Qxd6 15. Re2 Re7 16. Rae1 Nc4 17. Nd2 Bd3 18. Nce4 Bxe4 19. Nxc4 dxc4 0-1

[Event "Niteroi op 2nd"]
[Site "Niteroi"]
[Date "2022.09.02"]
[Round "2"]
[White "De Abreu, Luiza Reis Rodrigue"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "E07"]
[WhiteElo "1742"]
[BlackElo "1645"]
[PlyCount "80"]
[EventDate "2022.09.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. g3 Be7 5. Bg2 0-0 6. 0-0 Nbd7 7. c5 c6 8. a4 a5 9. Nc3 Re8 10. Re1 Nf8 11. Ne5 N6d7 12. f4 Qc7 13. e4 Nf6 14. Qc2 b6 15. Be3 Bb7 16. Rab1 Rad8 17. exd5 exd5 18. Bf2 bxc5 19. Red1 cxd4 20. Bxd4 c5 21. Nb5 Qb6 22. Bf2 Ne4 23. Bxe4 dxe4 24. Qc4 Ne6 25. b3 Rf8 26. Rd7 Rxd7 27. Nxd7 Qc6 28. Ne5 Qd5 29. Qxd5 Bxd5 30. Nc3 Bb7 31. Rd1 Rd8 32. Rd7 Rxd7 33. Nxd7 f5 34. Ne5 Nd4 35. Bxd4 cxd4 36. Nb5 d3 37. Nc4 Bc5+ 38. Kf1 e3 39. Nxe3 Bxe3 40. Nc3 Bf3 0-1

[Event "Niteroi op 2nd"]
[Site "Niteroi"]
[Date "2022.09.02"]
[Round "3"]
[White "Vaz, Osvaldo Jose"]
[Black "Silva, Marcelo dos Santos"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1645"]
[BlackElo "1910"]
[PlyCount "64"]
[EventDate "2022.09.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 g6 7. Bc4 Nb6 8. Bb5+ Bd7 9. Bxd7+ Qxd7 10. 0-0 Bg7 11. Qe2 0-0 12. Nc3 Nc6 13. Bf4 d5 14. Rfe1 a6 15. a3 Rac8 16. Rad1 e6 17. h4 h5 18. Bg5 Ne7 19. Nh2 Nf5 20. g4 hxg4 21. Nxg4 Rc4 22. h5 Rxd4 23. Kg2 Rxd1 24. Rxd1 Qc6 25. h6 d4+ 26. Ne4 Ne3+ 27. Kf3 Nxg4 28. Kxg4 Bxe5 29. h7+ Kh8 30. Nf6 Qg2+ 31. Kh4 Bg3+ 32. Kg4 Bxf2+ 0-1

[Event "Niteroi op 2nd"]
[Site "Niteroi"]
[Date "2022.09.01"]
[Round "1"]
[White "Vaz, Osvaldo Jose"]
[Black "Sega, Carlos Alberto"]
[Result "0-1"]
[ECO "C24"]
[WhiteElo "1645"]
[BlackElo "2184"]
[PlyCount "118"]
[EventDate "2022.09.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 Be7 5. 0-0 d6 6. Nc3 0-0 7. Ne2 d5 8. Bb3 a5 9. a3 dxe4 10. dxe4 Qxd1 11. Rxd1 Nxe4 12. Nxe5 Na6 13. Be3 Nac5 14. Ba2 Be6 15. Bxe6 Nxe6 16. Nd4 Nxd4 17. Rxd4 Nf6 18. Rad1 Nd5 19. R4d3 Nxe3 20. Rxe3 Bg5 21. Red3 Rfe8 22. Nf3 Bf6 23. c3 Re2 24. R3d2 Rxd2 25. Rxd2 a4 26. Kf1 Kf8 27. Rd7 Rb8 28. Nd2 Ke8 29. Rd3 b5 30. Ne4 Be7 31. Ke2 Rd8 32. g4 h6 33. h3 Rd7 34. f3 g6 35. Nf2 Bg5 36. Nd1 Ke7 37. Rxd7+ Kxd7 38. Kd3 Bf6 39. Nf2 Be5 40. Ke4 Ke6 41. Nd1 f5+ 42. Kd3 c5 43. Kc2 Bf4 44. c4 b4 45. Nf2 b3+ 46. Kd1 Be5 47. Nd3 Kd6 48. Kd2 Bd4 49. Ke2 Ke6 50. Kd2 Kf6 51. Ke2 Kg5 52. Kf1 h5 53. gxh5 Kxh5 54. Kg2 Kh4 55. Kh2 g5 56. Kg2 g4 57. hxg4 fxg4 58. fxg4 Kxg4 59. Kf1 Kf3 0-1

[Event "Rio de Janeiro op"]
[Site "Rio de Janeiro"]
[Date "2022.04.24"]
[Round "6"]
[White "Deus Filho, Joaquim"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "1886"]
[BlackElo "1659"]
[PlyCount "49"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 c5 5. g3 g6 6. Bg2 Bg7 7. 0-0 0-0 8. e5 Nfd7 9. Re1 Nc6 10. Nb3 b6 11. Bf4 Bb7 12. c3 Rc8 13. d4 Ba6 14. a3 Bc4 15. Nc1 Ba6 16. b4 Bb7 17. Nb3 c4 18. Nbd2 b5 19. Nf1 Nb6 20. Qd2 Na4 21. Rac1 Ne7 22. g4 Kh8 23. Bg5 Qe8 24. Bf6 Nb6 25. Qh6 1-0

[Event "Rio de Janeiro op"]
[Site "Rio de Janeiro"]
[Date "2022.04.23"]
[Round "4"]
[White "Borges, Jose"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1952"]
[BlackElo "1659"]
[PlyCount "99"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Nge7 6. Bg2 Ng6 7. 0-0 Be7 8. Re1 0-0 9. a4 Rb8 10. h4 Bd6 11. Qe2 Bc7 12. c3 Bd7 13. h5 Nge5 14. Nxe5 Nxe5 15. f4 Nc6 16. exd5 exd5 17. Bxd5 Re8 18. Qf2 Rxe1+ 19. Qxe1 Qf6 20. Bf3 Re8 21. Ne4 Qe7 22. Bd2 b6 23. Qf2 Qd8 24. h6 Bf5 25. hxg7 Kxg7 26. g4 Bxe4 27. Bxe4 Ne7 28. Qh4 Ng6 29. Qxd8 Rxd8 30. Rf1 Ne7 31. f5 f6 32. g5 Nc8 33. Kf2 Nd6 34. Ke3 fxg5 35. f6+ Kh8 36. Rh1 Nxe4 37. Kxe4 Bf4 38. Bxf4 gxf4 39. Rf1 Kg8 40. Rxf4 Kf7 41. Rh4 Kg6 42. d4 Rd7 43. Ke5 h5 44. Rh2 cxd4 45. cxd4 Rd8 46. Rg2+ Kf7 47. Rg7+ Kf8 48. Rxa7 h4 49. Rh7 Re8+ 50. Kf5 1-0

[Event "Rio de Janeiro op"]
[Site "Rio de Janeiro"]
[Date "2022.04.23"]
[Round "5"]
[White "Vaz, Osvaldo Jose"]
[Black "Grossi, Cristiano De Lauren"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1659"]
[PlyCount "109"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 b6 4. Bc4 e6 5. Nf3 Nf6 6. Qe2 Bb7 7. Bg5 Be7 8. Nbd2 0-0 9. 0-0 Nbd7 10. Rfe1 h6 11. Bf4 d5 12. exd5 Nxd5 13. Bg3 N7f6 14. Rad1 Bd6 15. Ne5 cxd4 16. cxd4 Ne7 17. Nxf7 Rxf7 18. Qxe6 Bd5 19. Qxd6 Bxc4 20. Nxc4 Nf5 21. Qe6 Qc8 22. d5 Nxg3 23. Qxf7+ Kxf7 24. Nd6+ Kf8 25. Nxc8 Nf5 26. Rc1 Nxd5 27. Re5 Nde7 28. Nxe7 Nxe7 29. g3 Ng6 30. Rf5+ Ke7 31. Re1+ Kd6 32. Rf7 Ne5 33. Rd1+ Ke6 34. Rxg7 Kf6 35. Rh7 Kg6 36. Rc7 Kf5 37. Kg2 Ke6 38. h3 a5 39. f4 Nf7 40. Rdd7 Nd6 41. Rh7 Re8 42. g4 Kd5 43. Rhe7 Rf8 44. Kf3 Nc8 45. Rh7 Kd6 46. Rcf7 Re8 47. Rxh6+ Kc5 48. Rf5+ Kd4 49. Re5 Rd8 50. Ree6 Kc5 51. g5 b5 52. g6 Nd6 53. g7 Nf5 54. Rh5 Kd5 55. Re5+ 1-0

[Event "Rio de Janeiro op"]
[Site "Rio de Janeiro"]
[Date "2022.04.22"]
[Round "3"]
[White "Vaz, Osvaldo Jose"]
[Black "Mendes, Makyl Angelo Xavier"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1659"]
[BlackElo "1758"]
[PlyCount "51"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 Nf6 5. Nc3 a6 6. Nf3 b5 7. a3 e6 8. Bd3 Nbd7 9. 0-0 Bb7 10. Re1 Qc7 11. Bg5 Be7 12. Rc1 Rc8 13. e5 dxe5 14. Nxe5 h6 15. Bf4 g5 16. Bg3 h5 17. Nxf7 Qc6 18. d5 Qb6 19. Nxh8 h4 20. Be5 Nxe5 21. Rxe5 g4 22. Rxe6 Qa7 23. Ng6 Nxd5 24. Nxd5 Rxc1 25. Qxc1 g3 26. Rxe7+ 1-0

[Event "Rio de Janeiro op"]
[Site "Rio de Janeiro"]
[Date "2022.04.21"]
[Round "2"]
[White "De Souza, Victoria Hiorrana d"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1765"]
[BlackElo "1659"]
[PlyCount "23"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. e3 Nf6 4. b3 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Ne5 e6 8. d3 Bd6 9. Bb2 0-0 10. 0-0 Re8 11. Nd2 Qe7 12. Ndf3 1/2-1/2

[Event "Rio de Janeiro op"]
[Site "Rio de Janeiro"]
[Date "2022.04.21"]
[Round "1"]
[White "Vaz, Osvaldo Jose"]
[Black "Di Berardino, Diego Rafael"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1659"]
[BlackElo "2490"]
[PlyCount "66"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. a3 g6 8. Bc4 Nb6 9. Bb3 Bg7 10. Qe2 0-0 11. h3 Bf5 12. g4 Be6 13. Nbd2 Bxb3 14. Nxb3 dxe5 15. dxe5 Qd5 16. Nbd2 Nxe5 17. 0-0 Rac8 18. Nxe5 Qxe5 19. Qxe5 Bxe5 20. Nf3 Bg7 21. Rb1 Rc2 22. Rd1 Rfc8 23. Ne1 R2c7 24. b3 e6 25. Bf4 Rc6 26. Rbc1 Nd5 27. Bd2 Bc3 28. Nd3 Bxd2 29. Rxc6 Rxc6 30. Rxd2 Rc3 31. g5 Rxb3 32. Nc5 Rxa3 33. Nxb7 Rxh3 0-1

[Event "Pocos de Caldas op"]
[Site "Pocos de Caldas"]
[Date "2022.03.13"]
[Round "5"]
[White "Vaz, Osvaldo Jose"]
[Black "Deus Filho, Joaquim"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "1694"]
[BlackElo "1917"]
[PlyCount "60"]
[EventDate "2022.03.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 d5 4. Nd2 cxd4 5. cxd4 dxe4 6. Nxe4 Bb4+ 7. Nc3 Nc6 8. Nf3 Nge7 9. Bd3 Nf5 10. Be3 Qa5 11. Qc2 h6 12. 0-0 0-0 13. a3 Be7 14. b4 Qd8 15. Rad1 Bf6 16. Be4 Nxe3 17. fxe3 Ne7 18. Ne2 Nd5 19. Qd2 Bd7 20. Bc2 Bb5 21. Rf2 Rc8 22. a4 Rxc2 23. Qxc2 Nxe3 24. Qd2 Nxd1 25. Qxd1 Bxe2 26. Rxe2 Qd6 27. b5 Rc8 28. Rd2 Qa3 29. Qe2 Qxa4 30. Kf2 Qc4 0-1

[Event "Pocos de Caldas op"]
[Site "Pocos de Caldas"]
[Date "2022.03.12"]
[Round "4"]
[White "Fernandes, Beatriz"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1235"]
[BlackElo "1694"]
[PlyCount "44"]
[EventDate "2022.03.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Nf3 Bg4 6. Be3 Nd7 7. Nbd2 Ngf6 8. 0-0 0-0 9. Re1 Re8 10. Bg5 c6 11. c3 Qc7 12. Qc2 h6 13. Bh4 b6 14. h3 Be6 15. Bxf6 Nxf6 16. Ne5 Rac8 17. Rac1 Nd7 18. Ndf3 Qd8 19. Bf5 Nf6 20. Re2 c5 21. Rce1 Nd7 22. Qd3 a6 1/2-1/2

[Event "Pocos de Caldas op"]
[Site "Pocos de Caldas"]
[Date "2022.03.12"]
[Round "3"]
[White "Vaz, Osvaldo Jose"]
[Black "Tamarozi, Isabelle"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1694"]
[BlackElo "1971"]
[PlyCount "110"]
[EventDate "2022.03.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 d6 7. Bc4 Nb6 8. Bb5 Bd7 9. 0-0 Nxe5 10. Nxe5 dxe5 11. Qe2 exd4 12. Rd1 Qc7 13. Bg5 h6 14. Bh4 e6 15. Bd3 Bd6 16. Bg3 0-0 17. Nd2 Bxg3 18. hxg3 Bc6 19. Rac1 Rad8 20. Ne4 Qe7 21. Nd2 e5 22. Re1 Rfe8 23. f3 Nd5 24. Nc4 Nb4 25. Bb1 d3 26. Qd2 Qc5+ 27. Kh1 e4 28. fxe4 Rxe4 29. Rxe4 Bxe4 30. a3 Nc6 31. Ba2 Qh5+ 32. Kg1 Qe2 33. Re1 Qxd2 34. Nxd2 Bg6 35. Re3 Kf8 36. Kf2 f6 37. Bb3 Bh5 38. Nf3 Nd4 39. Rxd3 Nc6 40. Rd5 Bf7 41. Rb5 Bxb3 42. Rxb3 b6 43. Rc3 Ne5 44. Nxe5 fxe5 45. Rc2 Ke7 46. Ke3 Ke6 47. Rc7 Rd7 48. Rc6+ Kd5 49. Rc2 Rf7 50. b3 a6 51. Rd2+ Ke6 52. Ke4 Rc7 53. Rd3 Rc2 54. Kf3 Kf5 55. Re3 e4+ 0-1

[Event "Pocos de Caldas op"]
[Site "Pocos de Caldas"]
[Date "2022.03.11"]
[Round "2"]
[White "Correa, Livia Leite"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "E18"]
[WhiteElo "1768"]
[BlackElo "1694"]
[PlyCount "102"]
[EventDate "2022.03.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. c4 b6 7. Nc3 Bb7 8. Bf4 a6 9. Rb1 Nbd7 10. b3 Rc8 11. Qd3 c5 12. Ng5 h6 13. Nf3 cxd4 14. Qxd4 Bc5 15. Qd3 Re8 16. Ne5 Nxe5 17. Bxe5 Ng4 18. Bf4 e5 19. Bc1 e4 20. Qc2 f5 21. h3 Nf6 22. e3 Qe7 23. Ne2 Nd7 24. Nf4 Qf7 25. Rd1 Nf6 26. Bb2 g5 27. Qc3 gxf4 28. Qxf6 Qxf6 29. Bxf6 fxe3 30. fxe3 Bxe3+ 31. Kf1 dxc4 32. bxc4 Rc7 33. Ke2 Bc5 34. h4 Bc8 35. Bd4 f4 36. Kf2 Bg4 37. Bxc5 Bxd1 38. Bd6 Bc2 39. Bxc7 Bxb1 40. Bxf4 Bxa2 41. Bf1 Kg7 42. Ke3 Bb1 43. Bc7 Re6 44. Bf4 a5 45. Kd4 a4 46. Be5+ Rxe5 47. Kxe5 a3 48. Kd6 a2 49. c5 bxc5 50. Kxc5 a1Q 51. Kd6 Bd3 0-1

[Event "Pocos de Caldas op"]
[Site "Pocos de Caldas"]
[Date "2022.03.11"]
[Round "1"]
[White "Vaz, Osvaldo Jose"]
[Black "Lage, Pedro Ferreira"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "1694"]
[BlackElo "2120"]
[PlyCount "58"]
[EventDate "2022.03.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. c3 Nc6 5. Ngf3 cxd4 6. cxd4 Bb4 7. Bd3 dxe4 8. Bxe4 Nf6 9. Bxc6+ bxc6 10. 0-0 0-0 11. Nc4 Ba6 12. Qc2 Qd5 13. Nfe5 Rac8 14. Rd1 c5 15. Ne3 Qb7 16. d5 exd5 17. Bd2 Bxd2 18. Qxd2 Rfe8 19. f4 d4 20. N3c4 Ne4 21. Qe1 f6 22. Na5 Qd5 23. Ng4 Qf5 24. Qh4 Be2 25. h3 Bxd1 26. Rxd1 h5 27. Nh2 c4 28. b4 d3 29. Nf3 Nc3 0-1

[Event "Florianopolis op 8th"]
[Site "Florianopolis"]
[Date "2022.01.29"]
[Round "8"]
[White "Vaz, Osvaldo Jose"]
[Black "Peixoto, Rudson Marinho"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1680"]
[BlackElo "1941"]
[PlyCount "78"]
[EventDate "2022.01.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. d5 Be7 6. Be2 0-0 7. 0-0 Nc5 8. Nd2 a5 9. a4 c6 10. Bf3 cxd5 11. exd5 Bf5 12. Re1 Rc8 13. Nde4 Nfxe4 14. Nxe4 Bxe4 15. Bxe4 f5 16. Bd3 e4 17. Bf1 Bf6 18. Ra2 Qc7 19. b3 Nd7 20. c4 Ne5 21. Be3 g5 22. f4 exf3 23. gxf3 Rce8 24. Bh3 Bg7 25. Kh1 Qe7 26. Bf2 Qf6 27. Rae2 Qh6 28. Bg2 Qh5 29. Re3 f4 30. Re4 Rf6 31. c5 Rh6 32. Bg1 Rf8 33. cxd6 g4 34. fxg4 Nxg4 35. h3 f3 36. Bf1 Qxh3+ 37. Bxh3 Rxh3+ 38. Bh2 Rxh2+ 39. Kg1 Rg2+ 0-1

[Event "Florianopolis op 8th"]
[Site "Florianopolis"]
[Date "2022.01.27"]
[Round "5"]
[White "Da Silva, Kauan Salvagni Tele"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1218"]
[BlackElo "1680"]
[PlyCount "64"]
[EventDate "2022.01.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nf6 3. Bd3 e6 4. f4 c5 5. c3 Nbd7 6. Nf3 Be7 7. Nbd2 0-0 8. 0-0 b6 9. Ne5 Bb7 10. Rf3 Ne4 11. Rh3 g6 12. Nxe4 dxe4 13. Bc2 f5 14. Qe1 Nxe5 15. fxe5 Rf7 16. Qg3 Qc7 17. Bb3 c4 18. Bc2 Raf8 19. Bd2 Rg7 20. Rf1 Qd8 21. Qf2 Qe8 22. Qe2 Qc8 23. g4 Rgf7 24. Be1 Qc6 25. Bh4 g5 26. Bg3 f4 27. Bf2 fxe3 28. Qxe3 Rf3 29. Rxf3 Rxf3 30. Qe2 e3 31. Bxe3 Rxe3 32. Bxh7+ Kg7 0-1

[Event "Florianopolis op 8th"]
[Site "Florianopolis"]
[Date "2022.01.27"]
[Round "6"]
[White "Vaz, Osvaldo Jose"]
[Black "Passos, Rafael Moreira"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1680"]
[BlackElo "1906"]
[PlyCount "115"]
[EventDate "2022.01.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. Be3 cxd4 8. cxd4 Bb4+ 9. Nc3 0-0 10. 0-0 Bxc3 11. bxc3 Nc6 12. c4 Qd6 13. Rc1 Rfd8 14. h3 Bh5 15. Qb3 a5 16. c5 Qc7 17. Rfd1 Nd5 18. Bg5 Rd7 19. Qb2 h6 20. Bh4 Nf4 21. Bg3 Nxe2+ 22. Qxe2 Bxf3 23. Qxf3 Qd8 24. Bd6 Ne7 25. g4 Nd5 26. Qg3 Rc8 27. h4 Nc7 28. g5 hxg5 29. hxg5 Nb5 30. g6 Nxd6 31. cxd6 Rxc1 32. gxf7+ Kxf7 33. Rxc1 Rxd6 34. Qf3+ Kg8 35. Qe3 Qf6 36. Rc8+ Kh7 37. Rc5 Rd5 38. Qh3+ Qh6 39. Qc3 Qg6+ 40. Kf1 Rxc5 41. dxc5 Qb1+ 42. Kg2 Qxa2 43. Qd3+ Kg8 44. Qd8+ Kf7 45. Qd7+ Kf6 46. Qd8+ Ke5 47. Qc7+ Kd4 48. Qxg7+ Kxc5 49. Qc7+ Kd4 50. Qb6+ Kc3 51. Qe3+ Kb4 52. Qb6+ Ka4 53. Qd4+ Kb5 54. Qd7+ Ka6 55. Qd4 Qd5+ 56. Qxd5 exd5 57. f4 Kb6 58. Kg3 0-1

[Event "Florianopolis op 8th"]
[Site "Florianopolis"]
[Date "2022.01.26"]
[Round "4"]
[White "Vaz, Osvaldo Jose"]
[Black "Hataby, Raed"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1680"]
[BlackElo "1988"]
[PlyCount "48"]
[EventDate "2022.01.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. Qd2 c6 6. Bd3 Qa5 7. 0-0-0 b5 8. Kb1 a6 9. Bh6 Bxh6 10. Qxh6 Be6 11. d5 cxd5 12. exd5 Nxd5 13. Nxd5 Bxd5 14. b3 Bxg2 15. Nh3 Bxh1 16. Qg7 Rf8 17. Ng5 Bb7 18. Nxh7 Nd7 19. h4 0-0-0 20. h5 gxh5 21. Bf5 e6 22. Bh3 h4 23. f4 Qc7 24. f5 Be4 0-1

[Event "Florianopolis op 8th"]
[Site "Florianopolis"]
[Date "2022.01.25"]
[Round "2"]
[White "Vaz, Osvaldo Jose"]
[Black "Sombrio, Otto de Henrique"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1680"]
[PlyCount "63"]
[EventDate "2022.01.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 e5 5. d5 Nd4 6. Nf3 Nxf3+ 7. Qxf3 Nf6 8. Nc3 Bb4 9. Bd2 0-0 10. Bc4 d6 11. h3 a6 12. 0-0 b5 13. Bb3 a5 14. a3 Bxc3 15. Bxc3 a4 16. Ba2 Nd7 17. Rac1 Nc5 18. Bxe5 Re8 19. Qg3 Rxe5 20. Rxc5 Qg5 21. Rc7 Qxg3 22. fxg3 f6 23. Bb1 Kf8 24. Rfc1 Ba6 25. Rd7 Ree8 26. Rcc7 Rac8 27. Rf7+ Kg8 28. Rxg7+ Kh8 29. Rxh7+ Kg8 30. Kf2 Rxc7 31. Rxc7 Rd8 32. g4 1-0

[Event "Florianopolis op 8th"]
[Site "Florianopolis"]
[Date "2022.01.24"]
[Round "1"]
[White "Gauche, Charles"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2240"]
[BlackElo "1680"]
[PlyCount "92"]
[EventDate "2022.01.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 a6 9. dxc5 Nxc5 10. Nd4 Bd7 11. Be2 0-0 12. 0-0 Qc7 13. a3 f6 14. b4 Ne4 15. Nxe4 dxe4 16. exf6 Bxf6 17. c3 Rad8 18. Rac1 Ne7 19. Bg4 Nf5 20. Rfd1 Bc8 21. g3 Kh8 22. Bxf5 exf5 23. Qe2 Qf7 24. a4 Rd6 25. Rd2 Rfd8 26. a5 Bd7 27. Qf2 g6 28. Qe1 Qc4 29. Rg2 Bb5 30. h3 Qd5 31. g4 Bd3 32. Kh2 R6d7 33. Qg3 Rg7 34. g5 Be7 35. h4 Qf7 36. Nc2 Bxc2 37. Rgxc2 Rd3 38. Qe1 Bd6 39. Rf2 Qc7 40. Kg2 Rd7 41. h5 gxh5 42. Qe2 Kg8 43. Qa2+ Kg7 44. Qe2 Kg8 45. Bb6 Qc6 46. Be3 Qc7 1/2-1/2

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2021.10.12"]
[Round "7"]
[White "Mobaier, Sergio"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1864"]
[BlackElo "1644"]
[PlyCount "79"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d6 3. e3 g6 4. Nf3 Bg7 5. h3 0-0 6. Be2 Nbd7 7. 0-0 c5 8. c3 Re8 9. a4 b6 10. Bh2 Bb7 11. Nbd2 Rc8 12. Qb3 Bd5 13. c4 Ba8 14. d5 Nb8 15. Bd3 Na6 16. Rfe1 Nb4 17. Rad1 Qd7 18. Nb1 Rcd8 19. Nc3 Qb7 20. Bb1 e6 21. e4 e5 22. g4 Qe7 23. Bg3 Qf8 24. Kh2 a6 25. Na2 a5 26. Nc3 Bb7 27. Nb5 Rd7 28. Qe3 Bc8 29. b3 Rb7 30. Rf1 Bxg4 31. Kg2 Bh6 32. Qc3 Bc8 33. Nxe5 Bg7 34. Nxd6 Qxd6 35. Nxf7 Qd7 36. Ng5 Nxe4 37. Qc1 Nxg5 38. Qxg5 Qxh3+ 39. Kg1 Bg4 40. f3 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2021.10.12"]
[Round "6"]
[White "Vaz, Osvaldo Jose"]
[Black "Mendes, Ana Beatriz Dias Gu"]
[Result "1-0"]
[ECO "C27"]
[WhiteElo "1644"]
[BlackElo "1459"]
[PlyCount "103"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. Nc3 d6 5. Nge2 Nc6 6. Na4 Bb6 7. Nxb6 axb6 8. Bg5 h6 9. Bh4 g5 10. Bg3 d5 11. exd5 Nxd5 12. 0-0 Be6 13. Re1 h5 14. h3 h4 15. Bh2 g4 16. Bxd5 Qxd5 17. Nc3 Qa5 18. Re4 g3 19. fxg3 Qc5+ 20. Kh1 hxg3 21. Bxg3 0-0-0 22. Rh4 Rhg8 23. Qe1 Nd4 24. Qxe5 Nxc2 25. Rc1 Qxe5 26. Bxe5 Ne3 27. Nb5 Rxd3 28. Rxc7+ Kd8 29. Bf6+ Ke8 30. Rd4 Rxd4 31. Bxd4 Nxg2 32. Rxb7 Bd5 33. Nd6+ Kf8 34. Rb8+ Ke7 35. Rxg8 Ne1+ 36. Kh2 Nf3+ 37. Kg3 Nxd4 38. Nc8+ Ke6 39. Nxb6 Bxa2 40. Na4 Ke5 41. Nc3 Bb3 42. Rg5+ Ke6 43. h4 Nf5+ 44. Kh3 Ne3 45. h5 Kf6 46. Ne4+ Ke7 47. Re5+ Kf8 48. h6 Be6+ 49. Kh4 Nf5+ 50. Kg5 Kg8 51. Nf6+ Kf8 52. Rxf5 1-0

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2021.10.11"]
[Round "5"]
[White "De Oliveira, Francisco E Saraiva"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "A16"]
[WhiteElo "1437"]
[BlackElo "1644"]
[PlyCount "76"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. d3 0-0 5. e3 d6 6. Nc3 Nbd7 7. Nge2 c5 8. 0-0 Rb8 9. a3 a6 10. Rb1 b5 11. a4 b4 12. Nd5 e6 13. Nxf6+ Nxf6 14. b3 Bb7 15. f3 Re8 16. e4 Qb6 17. Bb2 Rbd8 18. d4 Nd7 19. d5 exd5 20. exd5 Ne5 21. Bc1 Bc8 22. h3 Bf5 23. Ra1 Nxf3+ 24. Bxf3 Bxa1 25. Bg5 f6 26. Bf4 Be5 27. Bxe5 Rxe5 28. g4 Bc8 29. Re1 Rde8 30. Kf2 Qd8 31. Qd2 Kg7 32. h4 h6 33. Rg1 f5 34. h5 Qh4+ 35. Ng3 fxg4 36. Rh1 Qf6 37. Ne4 Qxf3+ 38. Ke1 Rxe4+ 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2021.10.11"]
[Round "4"]
[White "Vaz, Osvaldo Jose"]
[Black "De Lima, Luciano Neves"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1644"]
[BlackElo "1896"]
[PlyCount "92"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 d5 2. Nf3 dxe4 3. Ng5 Bf5 4. Bc4 e6 5. d3 exd3 6. cxd3 Qd7 7. a4 Nc6 8. Nf3 0-0-0 9. Bb5 f6 10. d4 a6 11. Nc3 axb5 12. axb5 Nb8 13. 0-0 Bb4 14. Qb3 Bxc3 15. bxc3 Bg4 16. Be3 Bxf3 17. gxf3 Qd5 18. c4 Qxf3 19. Ra8 Ne7 20. d5 exd5 21. Rxb8+ Kd7 22. Rxd8+ Rxd8 23. Rd1 Ke8 24. Qd3 Qg4+ 25. Kh1 Qxc4 26. Qxh7 Qe4+ 27. Qxe4 dxe4 28. Rc1 Nd5 29. Bc5 Kf7 30. Be3 f5 31. Bg5 Rd7 32. h4 g6 33. Ra1 Nc3 34. Ra7 b6 35. Ra8 Nxb5 36. Rh8 Nd4 37. Rh7+ Ke6 38. Rh6 Rg7 39. h5 Kf7 40. Bf4 Nf3 41. Rxg6 Rxg6 42. hxg6+ Kxg6 43. Bxc7 b5 44. Bd6 Ne1 45. Kh2 Nd3 46. Kg2 b4 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2021.10.10"]
[Round "3"]
[White "Cardoso, Marcio de Lucca"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1892"]
[BlackElo "1644"]
[PlyCount "59"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Bd3 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Nf3 Qb6 8. Bc2 Be7 9. 0-0 0-0 10. Kh1 cxd4 11. cxd4 f5 12. Nc3 a6 13. Rg1 Qd8 14. g4 Nb6 15. gxf5 exf5 16. Qf1 Qe8 17. Qg2 Qf7 18. Ne2 Kh8 19. Qh3 Be6 20. Bd2 Nc4 21. Rac1 g6 22. b3 Nxd2 23. Nxd2 Rac8 24. Bb1 Ba3 25. Rcf1 Bb2 26. Nf3 Nb4 27. Rd1 Ba3 28. Rg2 Nc2 29. Rdg1 Ne3 30. Ng5 1-0

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2021.10.09"]
[Round "1"]
[White "Guimaraes, Diogo Duarte"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2264"]
[BlackElo "1644"]
[PlyCount "55"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Bd3 Nf6 4. e5 Nfd7 5. Nf3 c5 6. c3 Nc6 7. 0-0 Be7 8. Re1 0-0 9. Nbd2 f6 10. exf6 Nxf6 11. Nf1 Qb6 12. a3 cxd4 13. cxd4 Bd7 14. b4 Rae8 15. b5 Nd8 16. Ne5 Nf7 17. Re3 Rd8 18. Rh3 Be8 19. Be3 Nd6 20. Nd2 Nf5 21. g4 Nd6 22. a4 Nfe4 23. Nxe4 Nxe4 24. Qc2 Rf6 25. a5 Qd6 26. f3 Nc5 27. Bxh7+ Kf8 28. Bg6 1-0

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2021.10.09"]
[Round "2"]
[White "Vaz, Osvaldo Jose"]
[Black "Fernandini, Felipe Piacente"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1644"]
[BlackElo "1325"]
[PlyCount "43"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nf3 Nf6 7. Nc3 Qd8 8. d5 Nb4 9. Qa4+ Qd7 10. Bb5 Nc6 11. dxc6 Qe6+ 12. Be3 b6 13. 0-0 g6 14. Rfe1 Qf5 15. Rad1 Bg7 16. c7+ Bd7 17. Bxd7+ Nxd7 18. Qc6 Rc8 19. Nb5 Qe6 20. Qxe6 fxe6 21. Ng5 Nf8 22. Bf4 1-0

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2020.03.08"]
[Round "6"]
[White "Gomes, Marco Tulio Caldeir"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "1647"]
[BlackElo "1761"]
[PlyCount "53"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. d4 Nf6 4. Bg2 Be7 5. Nf3 0-0 6. cxd5 exd5 7. 0-0 h6 8. Qc2 c6 9. Nc3 Bd6 10. a3 Re8 11. b4 a6 12. Bb2 Nbd7 13. e3 Nb6 14. Nd2 Bg4 15. f3 Bh5 16. e4 Bg6 17. Rae1 Nh5 18. f4 dxe4 19. Ncxe4 Nd5 20. Nc4 Bc7 21. Ne5 Bh7 22. Qe2 Nhf6 23. Nxf6+ Nxf6 24. Qc4 Nd5 25. Nxc6 bxc6 26. Qxc6 Ne7 27. Qxa8 1-0

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2020.03.08"]
[Round "5"]
[White "Vaz, Osvaldo Jose"]
[Black "Arango, Pedro Esteban"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "1761"]
[BlackElo "1583"]
[PlyCount "66"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bc4 Ngf6 6. Neg5 e6 7. Qe2 Nb6 8. Bb3 Bd6 9. 0-0 h6 10. Nh3 g5 11. Ne5 c5 12. a3 Qc7 13. Re1 c4 14. Ba2 Nbd7 15. f4 gxf4 16. Nxf7 Kxf7 17. Qxe6+ Kg7 18. Nxf4 Bxf4 19. d4 Bxc1 20. Raxc1 Re8 21. Qf5 Rxe1+ 22. Rxe1 Nb6 23. Qf3 Bg4 24. Qf2 Re8 25. c3 Rxe1+ 26. Qxe1 Qd7 27. Qe5 Qe6 28. Qg3 Nh5 29. Qc7+ Kf6 30. Qd8+ Kg6 31. Bb1+ Bf5 32. g4 Bxb1 33. gxh5+ Kxh5 0-1

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2020.03.07"]
[Round "4"]
[White "Ramos, Enzo de Almeida"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "1224"]
[BlackElo "1761"]
[PlyCount "64"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d3 c5 3. Nf3 d5 4. exd5 exd5 5. g3 Nf6 6. Bf4 Be7 7. Bg2 0-0 8. 0-0 Nc6 9. Nbd2 Nh5 10. Be5 g6 11. d4 f6 12. Bf4 Nxf4 13. gxf4 Bg4 14. dxc5 Bxc5 15. Nb3 Bb6 16. Qd2 Qd6 17. c4 Ne7 18. Rac1 Bc7 19. cxd5 Qxf4 20. Qxf4 Bxf4 21. Rc4 g5 22. d6 Nc6 23. Re1 Rad8 24. Nfd4 Ne5 25. Rc7 Rxd6 26. Rxb7 a5 27. Nb5 Rd1 28. Rxd1 Bxd1 29. Bd5+ Kh8 30. N3d4 Bg4 31. Nd6 Bh3 32. Be4 Nd7 1/2-1/2

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2020.03.07"]
[Round "3"]
[White "Vaz, Osvaldo Jose"]
[Black "Pinto, Ana Vitoria de Jesu"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "1761"]
[BlackElo "1636"]
[PlyCount "88"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. c3 dxc3 5. Nxc3 d6 6. Bc4 Nf6 7. e5 dxe5 8. Qxd8+ Nxd8 9. Nb5 Rb8 10. Nxe5 e6 11. Nc7+ Ke7 12. Nb5 a6 13. Nc3 Ke8 14. 0-0 Bd6 15. Nd3 Nc6 16. Be3 Ke7 17. Rfe1 Rd8 18. Bg5 Kf8 19. Ne4 Be7 20. Bf4 Ra8 21. Rad1 Nxe4 22. Rxe4 b5 23. Bb3 Bb7 24. Ree1 Rac8 25. a3 Na5 26. Ba2 Nc4 27. Bc1 Bf6 28. h3 Rd4 29. b3 Na5 30. Be3 Rd7 31. Bb6 Bd8 32. Be3 Rc3 33. Ne5 Rxd1 34. Rxd1 Bd5 35. b4 Nc4 36. Bd4 Rxa3 37. Bxc4 bxc4 38. b5 Ra5 39. b6 Rb5 40. Be3 Ke8 41. Ra1 Bxb6 42. Bf4 a5 43. Ng4 c3 44. Be5 c2 0-1

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2020.03.06"]
[Round "2"]
[White "Santana, Expedito"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1441"]
[BlackElo "1761"]
[PlyCount "45"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. Bf4 Nf6 4. e3 Be7 5. Bd3 0-0 6. 0-0 b6 7. c4 Nbd7 8. Nc3 Bb7 9. Nb5 Ne8 10. cxd5 Bxd5 11. Qc2 Ndf6 12. Rfc1 c5 13. a3 a6 14. Nc3 Bb7 15. dxc5 Bxc5 16. b4 Be7 17. Rd1 Nd6 18. Be2 Rc8 19. Bxd6 Bxd6 20. Qd2 Be7 21. Qb2 Qc7 22. Rac1 Qb8 23. h3 1/2-1/2

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2020.03.06"]
[Round "1"]
[White "Vaz, Osvaldo Jose"]
[Black "Aranha Filho, Alvaro Zimmermann"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "1761"]
[BlackElo "2239"]
[PlyCount "74"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. c4 Bg7 6. 0-0 e5 7. d3 Qe7 8. h3 Nf6 9. Nc3 0-0 10. Be3 Nh5 11. Qd2 f5 12. Bg5 Qc7 13. Bh6 f4 14. Bxg7 Qxg7 15. b4 g5 16. Nh2 cxb4 17. Na4 f3 18. Qe3 fxg2 19. Kxg2 Bxh3+ 20. Kh1 Bxf1 21. Rxf1 Nf4 22. Rg1 Rad8 23. Nb2 b6 24. Rg4 Kh8 25. Nf3 Rd6 26. Kg1 Rh6 27. c5 Rh3 28. Rg3 Qh6 29. Rxh3 Qxh3 30. Ne1 Qxe3 31. fxe3 Nh3+ 32. Kg2 Rf2+ 33. Kxh3 Rxb2 34. Nf3 Rxa2 35. cxb6 axb6 36. Nxe5 b3 37. Nc4 b5 0-1

[Event "Jacarei op 2nd"]
[Site "Jacarei"]
[Date "2019.07.28"]
[Round "6"]
[White "Costa, Flavio Luis Cesar"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2092"]
[BlackElo "1847"]
[PlyCount "75"]
[EventDate "2019.07.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 h6 8. Bg2 Qc7 9. Be3 Nc6 10. Qe2 Bd7 11. f4 Rc8 12. Nb3 b5 13. a3 Na5 14. Nxa5 Qxa5 15. 0-0 Be7 16. Rad1 b4 17. axb4 Qxb4 18. Bc1 Qb6+ 19. Qf2 Qb4 20. Kh1 Bc6 21. Rfe1 0-0 22. Qg3 Rfe8 23. Bf3 d5 24. exd5 exd5 25. Qg2 Bf8 26. Ne2 Ba8 27. c3 Qa4 28. Nd4 Ne4 29. g5 hxg5 30. fxg5 g6 31. h4 Bd6 32. Kg1 Bg3 33. Rf1 Bxh4 34. Qg4 Bf2+ 35. Rxf2 Nxf2 36. Kxf2 Rcd8 37. Qh4 Kf8 38. Ne6+ 1-0

[Event "Jacarei op 2nd"]
[Site "Jacarei"]
[Date "2019.07.28"]
[Round "5"]
[White "Vaz, Osvaldo Jose"]
[Black "Marino, Felipe Gabriel"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1847"]
[BlackElo "1657"]
[PlyCount "71"]
[EventDate "2019.07.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 5. Bc4 h6 6. 0-0 Bd6 7. Re1 Nge7 8. Nxc3 0-0 9. a3 Ng6 10. b4 Nce5 11. Ba2 Qf6 12. Nd4 c5 13. Nf5 Bb8 14. Bd2 d6 15. Nd5 Qd8 16. Qh5 Bxf5 17. exf5 Qh4 18. Qe2 Nh8 19. h3 Kh7 20. Kh2 Qd8 21. Qh5 f6 22. f4 Nef7 23. Ne7 Bc7 24. Ng6 Re8 25. Re6 Rxe6 26. fxe6 Nxg6 27. exf7 d5 28. Bb1 f5 29. Bxf5 Qf6 30. Rf1 Rf8 31. Re1 Rxf7 32. g4 Qb6 33. Re6 Rxf5 34. gxf5 Qb5 35. Qxg6+ Kg8 36. Re8+ 1-0

[Event "Jacarei op 2nd"]
[Site "Jacarei"]
[Date "2019.07.27"]
[Round "2"]
[White "De Oliveira, John Richard Aparec"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "A16"]
[WhiteElo "1453"]
[BlackElo "1847"]
[PlyCount "68"]
[EventDate "2019.07.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 0-0 5. e4 d6 6. Nf3 Nbd7 7. d3 c5 8. Rb1 Rb8 9. 0-0 a6 10. Ne1 b5 11. Nc2 Qa5 12. b4 Qc7 13. bxc5 Nxc5 14. Nd5 Nxd5 15. cxd5 Na4 16. Bd2 Nb2 17. Qc1 Nxd3 18. Qd1 Ne5 19. Nb4 Bd7 20. Nxa6 Qa7 21. Nxb8 Rxb8 22. Qb3 Nc4 23. Be3 Qa6 24. Rfc1 Rc8 25. Bf1 h5 26. Bxc4 bxc4 27. Qb7 Qxb7 28. Rxb7 Bh3 29. a4 c3 30. Rc2 Rc4 31. Rxe7 Rxa4 32. f4 Ra1+ 33. Bc1 Bd4+ 34. Rf2 Rxc1# 0-1

[Event "Jacarei op 2nd"]
[Site "Jacarei"]
[Date "2019.07.27"]
[Round "4"]
[White "Seccafim, Caic Dos Santos"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "1833"]
[BlackElo "1847"]
[PlyCount "122"]
[EventDate "2019.07.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. d3 d6 3. Nf3 e6 4. g3 Qc7 5. Bg2 Nf6 6. 0-0 g6 7. Nbd2 Bg7 8. c3 0-0 9. Re1 Nbd7 10. Nf1 Rb8 11. h3 b5 12. g4 Bb7 13. Ng3 c4 14. d4 e5 15. d5 Nc5 16. Bg5 Nd3 17. Re2 Nf4 18. Bxf4 exf4 19. Nf1 Rfe8 20. Nd4 a6 21. Qd2 g5 22. Nf5 Bf8 23. Nh2 Re5 24. Rae1 Rbe8 25. Qd4 Nxd5 26. Nf3 R5e6 27. Nxg5 f3 28. Nxf3 Nf4 29. Re3 Rg6 30. Bf1 Ne6 31. Qd2 Nc5 32. N3h4 Nxe4 33. Qc1 Rge6 34. Nd4 Bh6 35. Nhf5 Bf4 36. Bg2 d5 37. Nxe6 Rxe6 38. Bxe4 dxe4 39. Qd2 Rg6 40. Qd4 Bxe3 41. Rxe3 h5 42. Rg3 hxg4 43. hxg4 Bc8 44. Qxe4 Bxf5 45. Qxf5 Qc6 46. Rh3 Qe8 47. Qh5 Qe1+ 48. Kg2 Qe4+ 49. Kg3 Qd3+ 50. Kh2 Qd6+ 51. Kg2 Qc6+ 52. f3 Kf8 53. Qh8+ Ke7 54. Qe5+ Re6 55. Qg5+ Kd7 56. Qf5 Ke7 57. Rh7 Rf6 58. Qe5+ Re6 59. Qg5+ Rf6 60. Rh6 Qxf3+ 61. Kh2 Qf2+ 1/2-1/2

[Event "Jacarei op 2nd"]
[Site "Jacarei"]
[Date "2019.07.27"]
[Round "3"]
[White "Vaz, Osvaldo Jose"]
[Black "Haraguchi, Diego Sashaki"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "1847"]
[BlackElo "1634"]
[PlyCount "87"]
[EventDate "2019.07.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. c3 Nf6 5. Bd3 dxc3 6. Nxc3 d6 7. h3 g6 8. 0-0 Bg7 9. Qe2 0-0 10. Rd1 a6 11. Bf4 Qc7 12. Rac1 Be6 13. Bb1 Qa5 14. Ng5 Nh5 15. Bd2 Qe5 16. Nf3 Qa5 17. Nd5 Qd8 18. Be3 Bxd5 19. Rxd5 Nf6 20. Rdd1 Nd7 21. h4 Rc8 22. h5 h6 23. a3 Nce5 24. Nxe5 Nxe5 25. f4 Rxc1 26. Bxc1 Nd7 27. Be3 gxh5 28. e5 Re8 29. Qxh5 Qc7 30. e6 fxe6 31. Qxe8+ Nf8 32. f5 exf5 33. Ba2+ Kh7 34. Rc1 Qa5 35. Qxe7 Ng6 36. Qxd6 Bxb2 37. Rc7+ Bg7 38. Rxg7+ Kxg7 39. Bd4+ Kh7 40. Qd7+ Ne7 41. Qxe7+ Kg6 42. Bf7+ Kh7 43. Bh5+ Kg8 44. Qf7# 1-0

[Event "Jacarei op 2nd"]
[Site "Jacarei"]
[Date "2019.07.26"]
[Round "1"]
[White "Vaz, Osvaldo Jose"]
[Black "Da Silva, Daniel Pereira"]
[Result "0-1"]
[ECO "B49"]
[WhiteElo "1847"]
[BlackElo "1774"]
[PlyCount "106"]
[EventDate "2019.07.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. 0-0 Nf6 8. Be3 Bb4 9. f3 0-0 10. Qd2 d5 11. exd5 Nxd5 12. Bf2 Nxc3 13. bxc3 Bd6 14. g3 Rd8 15. Rab1 Be7 16. Qe1 Bf6 17. Nxc6 Qxc6 18. Rb3 b5 19. Bd3 Bb7 20. Be4 Qc7 21. a4 Bxe4 22. Qxe4 Rab8 23. axb5 axb5 24. Rfb1 h6 25. Rxb5 Rxb5 26. Rxb5 Qxc3 27. Rc5 Qd2 28. Rc4 g6 29. Qe3 Qd1+ 30. Kg2 h5 31. Qe1 Qd5 32. Rc5 Qa2 33. Kh3 Bg7 34. Qe4 Qa1 35. Qe2 Qb2 36. Rb5 Qc3 37. Rb3 Qd2 38. Re3 Qc1 39. Rd3 Rc8 40. Rd2 Bh6 41. f4 Bg7 42. Be3 Qa3 43. Bd4 Bxd4 44. Rxd4 Qc3 45. Rd2 Kg7 46. Qd1 Rc4 47. Kg2 Rc7 48. Kh3 Rc8 49. Qe2 Rc4 50. Kg2 Rc7 51. Kh3 Rc4 52. Rd3 Qa5 53. Qd2 Qc5 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2012.12.02"]
[Round "6"]
[White "Caporale, Giuseppe Guido"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "B50"]
[WhiteElo "1820"]
[PlyCount "126"]
[EventDate "2012.11.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 a6 5. Nc3 e6 6. Be2 Qc7 7. 0-0 Nf6 8. h3 Be7 9. Be3 Nbd7 10. Nd2 b5 11. f4 Bb7 12. Bf3 e5 13. Qd3 0-0 14. a3 Rac8 15. f5 Nb6 16. Bxb6 Qxb6+ 17. Kh2 Qc7 18. Rac1 d5 19. Rfe1 Rfd8 20. Qe2 Rd7 21. Kh1 d4 22. Ncb1 Qd8 23. Qd3 Rdc7 24. Re2 Nd7 25. Nb3 Nb6 26. Na5 Ba8 27. f6 Bxf6 28. Bg4 Nd7 29. Nb3 Rb8 30. Bxd7 Qxd7 31. Rf1 Bg5 32. N1d2 Rbc8 33. Nf3 Bf4 34. Nfxd4 Rd8 35. Qf3 a5 36. Nf5 g6 37. Ne3 f5 38. Rd2 Qc8 39. Rxd8+ Qxd8 40. Rd1 Qc8 41. Nd5 Bxd5 42. exd5 a4 43. d6 axb3 44. Qd5+ Kg7 45. c3 Rd7 46. Qxb5 e4 47. Qxb3 Qc5 48. Qe6 Qc6 49. c4 Rxd6 50. Rxd6 Qxd6 51. Qxd6 Bxd6 52. Kg1 Kf8 53. Kf2 Bc5+ 54. Ke2 Ke7 55. b4 Bd4 56. a4 Kd6 57. a5 Ba7 58. Kd2 Kc6 59. Kc3 g5 60. b5+ Kc5 61. b6 Bxb6 62. axb6 Kxb6 63. Kd4 h5 1/2-1/2

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2012.12.02"]
[Round "7"]
[White "Vaz, Osvaldo Jose"]
[Black "Medeiros, Thauane Ferreira"]
[Result "0-1"]
[ECO "B22"]
[BlackElo "1854"]
[PlyCount "40"]
[EventDate "2012.11.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 e6 6. Nc3 d6 7. Nf3 Nc6 8. Bb5 a6 9. Ba4 b5 10. Bb3 Nxc3 11. bxc3 dxe5 12. dxe5 Qxd1+ 13. Bxd1 Bc5 14. 0-0 0-0 15. a4 Bd7 16. Bc2 bxa4 17. Rd1 Rad8 18. Bxa4 Nxe5 19. Bxd7 Nxd7 20. Rxa6 Nb8 0-1

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2012.12.01"]
[Round "4"]
[White "Pinto, Rendrex Lopes"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "E76"]
[WhiteElo "1911"]
[PlyCount "61"]
[EventDate "2012.11.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 Nbd7 7. e5 Ne8 8. Be3 e6 9. Qd2 c6 10. h4 f5 11. h5 Qe7 12. 0-0-0 b5 13. cxb5 cxb5 14. Bxb5 Nc7 15. Bc6 Rb8 16. d5 Nb6 17. b3 Bb7 18. hxg6 h6 19. exd6 Qxd6 20. Bd4 Bxc6 21. Bxg7 Nc4 22. Bxf8 Qxf8 23. Qc2 Qa3+ 24. Kb1 Ne3 25. Qc1 Qxc1+ 26. Rxc1 Ncxd5 27. Nxd5 Bxd5 28. Ne5 Rb7 29. Rxh6 Be4+ 30. Kb2 Rb8 31. Rch1 1-0

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2012.12.01"]
[Round "5"]
[White "Vaz, Osvaldo Jose"]
[Black "Santos, Alexandre1111"]
[Result "1-0"]
[ECO "B00"]
[PlyCount "67"]
[EventDate "2012.11.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 e6 3. Nf3 d6 4. Nc3 Nf6 5. Be2 Be7 6. 0-0 0-0 7. h3 a6 8. Bf4 Nh5 9. Bh2 Bd7 10. d5 Na7 11. a4 Nf6 12. Re1 e5 13. b3 Rb8 14. Qd2 b5 15. Qe3 Rb7 16. axb5 Nxb5 17. Nd2 Qa8 18. Nxb5 Bxb5 19. c4 Bd7 20. c5 Bb5 21. c6 Rbb8 22. Nc4 h6 23. f4 exf4 24. Bxf4 Bxc6 25. dxc6 Qxc6 26. Bf3 d5 27. Ne5 Bc5 28. Nxc6 Bxe3+ 29. Rxe3 Rb7 30. e5 Nd7 31. Bxd5 Kh8 32. g4 Nc5 33. h4 Ne6 34. Bg3 1-0

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2012.11.30"]
[Round "3"]
[White "Vaz, Osvaldo Jose"]
[Black "Madona, Flavio Ricardo"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "55"]
[EventDate "2012.11.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 Nf6 4. Bc4 h6 5. 0-0 d6 6. Nc3 Bg4 7. dxe5 Bxf3 8. gxf3 Nxe5 9. Be2 Qe7 10. Bf4 g5 11. Bg3 0-0-0 12. Nd5 Nxd5 13. exd5 h5 14. h3 Bg7 15. Kh1 Qd7 16. Kg2 g4 17. h4 Nxf3 18. Bxf3 gxf3+ 19. Qxf3 Bxb2 20. Rab1 Be5 21. c4 Rhg8 22. Kh2 Bxg3+ 23. fxg3 Qa4 24. c5 Qxa2+ 25. Kh1 Rxg3 26. Qxg3 Qxd5+ 27. Qf3 Qc4 28. Qxb7+ 1-0

[Event "Sao Jose dos Campos op"]
[Site "Sao Jose dos Campos"]
[Date "2012.??.??"]
[Round "1"]
[White "Mandetta, Joao Danilo"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2117"]
[PlyCount "65"]
[EventDate "2012.11.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nbd7 7. Nge2 a6 8. Qd2 Re8 9. g4 c5 10. Ng3 cxd4 11. Bxd4 Ne5 12. Be2 Nc6 13. Be3 Qc7 14. Nd5 Nxd5 15. cxd5 Ne5 16. Rc1 Qd8 17. h3 b5 18. f4 Nd7 19. 0-0 Nf6 20. Bd4 e5 21. fxe5 dxe5 22. Be3 Bb7 23. Rf2 Nd7 24. Rcf1 f6 25. g5 Rf8 26. Bg4 fxg5 27. Be6+ Kh8 28. Rf7 Bc8 29. Bxg5 Nf6 30. R1xf6 Bxf6 31. Bxf6+ Qxf6 32. Rxf6 Rxf6 33. Qg5 1-0

[Event "Itau Mercosul Cup 3rd"]
[Site "Sao Paulo"]
[Date "1999.10.16"]
[Round "2"]
[White "Melao, Hindemburg"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2158"]
[PlyCount "57"]
[EventDate "1999.10.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Qd2 Nc6 8. 0-0-0 Bd7 9. f3 b5 10. g4 Rc8 11. g5 Ng8 12. f4 Nge7 13. Bxb5 axb5 14. Ndxb5 Ng6 15. h4 Na5 16. h5 Nc4 17. Qd3 Nxe3 18. Qxe3 Rxc3 19. Nxc3 Ne7 20. Rxd6 Nd5 21. Rxe6+ fxe6 22. exd5 Bb4 23. dxe6 Bc6 24. Rd1 Qe7 25. Qb6 0-0 26. Qxc6 Bxc3 27. Qxc3 Rxf4 28. Qe5 Rf8 29. c4 1-0

[Event "Americana op"]
[Site "Brazil"]
[Date "1994.01.??"]
[Round "?"]
[White "Fernandez, Rodrigo Amaral"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "E92"]
[WhiteElo "2355"]
[PlyCount "77"]
[EventDate "1994.01.??"]
[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 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. Be3 Ng4 8. Bg5 f6 9. Bc1 exd4 10. Nxd4 f5 11. Bxg4 fxg4 12. Be3 Nc6 13. Nxc6 bxc6 14. Bd4 Qh4 15. 0-0 Be5 16. Bxe5 dxe5 17. Qa4 Bd7 18. Rad1 Be8 19. Qa5 Qe7 20. Na4 h5 21. Qc5 Qf6 22. f3 g3 23. hxg3 g5 24. Nc3 h4 25. g4 Rf7 26. Rd3 Rd7 27. Rxd7 Bxd7 28. Nd5 Qd6 29. Qxd6 cxd6 30. Ne3 Kf7 31. Rd1 Ke7 32. Kh2 Rf8 33. Nf5+ Bxf5 34. gxf5 Rd8 35. Kh3 c5 36. Kg4 Kf6 37. g3 hxg3 38. Kxg3 Ke7 39. Rh1 1-0

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "4"]
[White "De Haro, Martim Alfonso"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "E32"]
[PlyCount "75"]
[EventDate "1992.08.08"]
[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 Nf6 2. c4 e6 3. Nc3 b6 4. e4 Bb7 5. Qc2 Bb4 6. f3 d6 7. Nge2 0-0 8. a3 Bxc3+ 9. Nxc3 c5 10. d5 exd5 11. cxd5 a6 12. a4 Nbd7 13. Be2 h6 14. 0-0 Ne5 15. Be3 Re8 16. Rad1 Rc8 17. Bf2 Nh5 18. g3 Nf6 19. g4 Nfd7 20. h3 Ng6 21. Bg3 Nf6 22. f4 Nd7 23. Kh2 Qe7 24. Bf3 Qf8 25. h4 Qe7 26. h5 Ngf8 27. Rfe1 Qd8 28. e5 dxe5 29. fxe5 Ba8 30. Bg2 Qg5 31. Qf5 Qxf5 32. gxf5 Nh7 33. e6 fxe6 34. fxe6 Ndf6 35. d6 Ng4+ 36. Kg1 Nhf6 37. d7 Bxg2 38. Kxg2 1-0

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "9"]
[White "Goldman, Marcelo"]
[Black "Vaz, Osvaldo Jose"]
[Result "1/2-1/2"]
[ECO "B23"]
[PlyCount "63"]
[EventDate "1992.08.08"]
[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 d6 3. f4 g6 4. Nf3 Bg7 5. Bc4 Nh6 6. 0-0 0-0 7. d3 Nc6 8. Qe1 Nd4 9. Nxd4 cxd4 10. Nd1 Be6 11. Bxe6 fxe6 12. Qh4 Nf7 13. Rf3 Bf6 14. Qg3 Bg7 15. h4 Qa5 16. c3 Qh5 17. c4 Bf6 18. Qh3 Nd8 19. g4 Qxh4 20. Nf2 Qxh3 21. Rxh3 Nc6 22. Bd2 Nb8 23. Kg2 Nd7 24. Rah1 Rf7 25. g5 Bh8 26. Ng4 Bg7 27. Rxh7 a6 28. R7h3 Raf8 29. Rf3 Rc8 30. Rfh3 Rcf8 31. Rf3 Rc8 32. Rfh3 1/2-1/2

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "7"]
[White "Missrie, Israel"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "B86"]
[PlyCount "133"]
[EventDate "1992.08.08"]
[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. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Be3 Qc7 8. Bb3 Bd7 9. f3 Nc6 10. Nxc6 Bxc6 11. 0-0 Be7 12. Qe1 0-0 13. Qg3 Kh8 14. Rad1 Rac8 15. Rd2 b5 16. a3 Qb7 17. Rfd1 a5 18. a4 bxa4 19. Nxa4 Bxa4 20. Bxa4 Qxb2 21. Bb3 Qa3 22. Rd4 d5 23. Ra4 Qb2 24. Qf2 Qc3 25. Bd4 Bc5 26. Bxc3 Bxf2+ 27. Kxf2 Rxc3 28. exd5 Nxd5 29. Rxa5 Rfc8 30. Ra7 R3c7 31. Rxc7 Nxc7 32. Rd7 Kg8 33. Ke3 Kf8 34. f4 Nd5+ 35. Bxd5 exd5 36. Kd3 Rc4 37. g3 Rc6 38. Rxd5 Rh6 39. h4 Ra6 40. Kd2 Ke7 41. Rd3 Ke6 42. Ke3 Ra1 43. Kf3 Rf1+ 44. Kg2 Ra1 45. c3 Kf5 46. Rd5+ Ke4 47. Re5+ Kd3 48. Re7 Ra2+ 49. Kf3 f5 50. Rxg7 Ra1 51. Rxh7 Kxc3 52. Rf7 Ra5 53. h5 Kd4 54. Re7 Ra3+ 55. Kg2 Ra2+ 56. Kh3 Ra1 57. Kh4 Rh1+ 58. Kg5 Rh3 59. Kxf5 Rxh5+ 60. Kg4 Rh8 61. f5 Kd5 62. Kf4 Kd6 63. Re1 Rh6 64. g4 Kd7 65. Kg5 Rh8 66. f6 Rg8+ 67. Kf5 1-0

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "2"]
[White "Pinheiro, Jose Pedro"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "E18"]
[PlyCount "63"]
[EventDate "1992.08.08"]
[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 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. 0-0 Be7 6. c4 0-0 7. Nc3 d6 8. Qc2 Nbd7 9. e4 e5 10. d5 h6 11. h3 Nh7 12. Be3 a6 13. Rad1 Ndf6 14. Nh4 Ne8 15. Nf5 Bg5 16. f4 exf4 17. gxf4 Bf6 18. Qf2 Bc8 19. Nd4 Bd7 20. Nf3 Bxc3 21. bxc3 Nef6 22. Nd4 Re8 23. e5 Nh5 24. e6 fxe6 25. dxe6 Bxe6 26. Nxe6 Rxe6 27. Bd5 Qe8 28. f5 Kh8 29. Bxe6 N7f6 30. Rde1 Ne4 31. Qf3 Nhg3 32. Bd5 1-0

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "8"]
[White "Vaz, Osvaldo Jose"]
[Black "Barbosa, Helio"]
[Result "1/2-1/2"]
[ECO "C06"]
[PlyCount "53"]
[EventDate "1992.08.08"]
[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 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ngf3 Qb6 8. 0-0 Be7 9. Re1 cxd4 10. cxd4 Nxd4 11. Nxd4 Qxd4 12. Nf3 Qb6 13. Qa4 0-0 14. Qc2 h6 15. Qe2 f6 16. exf6 Nxf6 17. Ne5 Bc5 18. Be3 Bxe3 19. fxe3 Qd6 20. Ng6 Rf7 21. e4 dxe4 22. Bxe4 Nxe4 23. Qxe4 Qb6+ 24. Kh1 Qxb2 25. Rf1 Rxf1+ 26. Rxf1 Bd7 27. Ne7+ 1/2-1/2

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "5"]
[White "Vaz, Osvaldo Jose"]
[Black "Braga, Joao Carlos"]
[Result "1-0"]
[ECO "C40"]
[PlyCount "73"]
[EventDate "1992.08.08"]
[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 e5 2. Nf3 Qe7 3. Nc3 c6 4. Be2 g6 5. 0-0 Bg7 6. d3 d6 7. Be3 Bg4 8. Qd2 Nf6 9. b4 0-0 10. a4 Nh5 11. d4 Bxf3 12. Bxf3 f5 13. exf5 exd4 14. Bxd4 Bxd4 15. Qxd4 Rxf5 16. Rfe1 Qf7 17. Qxd6 Nd7 18. Bg4 Rf8 19. Bxf5 Qxf5 20. Qe6+ Rf7 21. Qxf5 Rxf5 22. Re7 Nhf6 23. Rd1 Kf8 24. Rdxd7 Nxd7 25. Rxd7 Rf4 26. Na2 c5 27. g3 Rc4 28. c3 a5 29. bxc5 Rxa4 30. Rxb7 Ke8 31. Nb4 axb4 32. cxb4 h5 33. b5 Kd8 34. b6 h4 35. c6 Rc4 36. Rb8+ Ke7 37. c7 1-0

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "3"]
[White "Vaz, Osvaldo Jose"]
[Black "Chang, Suzana"]
[Result "1-0"]
[ECO "C68"]
[PlyCount "87"]
[EventDate "1992.08.08"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 Bxf3 7. Qxf3 Bc5 8. d3 Nf6 9. Be3 Qe7 10. Nd2 0-0-0 11. Nc4 Kb8 12. a4 Bd4 13. c3 Bxe3 14. Qxe3 Ne8 15. b4 Nd6 16. Na5 Kc8 17. Rfb1 Qd7 18. Qa7 Qe6 19. b5 axb5 20. axb5 cxb5 21. c4 Kd7 22. Nb3 b6 23. c5 Ra8 24. c6+ Ke7 25. Qxc7+ Kf6 26. Rxa8 Rxa8 27. Qxb6 Nc8 28. Qd8+ Kg6 29. Qd7 Ra7 30. Qxe6+ fxe6 31. Nc5 Rc7 32. Rxb5 Rxc6 33. Nd7 Rd6 34. Nxe5+ Kf6 35. f4 Nb6 36. Rxb6 Rxb6 37. Nd7+ Ke7 38. Nxb6 Kd6 39. d4 Kc6 40. Na4 Kb5 41. Nc5 e5 42. fxe5 Kc4 43. e6 Kxd4 44. e7 1-0

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "6"]
[White "Vaz, Osvaldo Jose"]
[Black "Fernandez, Hector Marcelo"]
[Result "1/2-1/2"]
[ECO "B78"]
[PlyCount "64"]
[EventDate "1992.08.08"]
[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. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Bc4 d6 9. Qd2 Bd7 10. 0-0-0 Qb8 11. h4 b5 12. Nxc6 Bxc6 13. Bd5 Nxd5 14. Nxd5 Re8 15. Bd4 Bxd5 16. exd5 Bxd4 17. Qxd4 Qc7 18. g4 Rac8 19. Rh2 Qc4 20. Kb1 Rc5 21. c3 Rec8 22. Rhd2 Qxd4 23. Rxd4 a5 24. a3 Rc4 25. Kc2 Kf8 26. Kd3 e5 27. dxe6 Rxd4+ 28. Kxd4 fxe6 29. Ke4 Ke7 30. g5 Rc4+ 31. Rd4 d5+ 32. Ke5 Rc5 1/2-1/2

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "10"]
[White "Vaz, Osvaldo Jose"]
[Black "Reis, Paulo F Jatoba"]
[Result "1-0"]
[ECO "B04"]
[PlyCount "37"]
[EventDate "1992.08.08"]
[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 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Nb6 5. Be2 dxe5 6. Nxe5 N8d7 7. Nf3 e6 8. 0-0 Be7 9. c4 0-0 10. Nc3 Bf6 11. Bf4 c6 12. Bd3 Re8 13. Ne5 Nxe5 14. dxe5 Be7 15. Qf3 Nd7 16. Rad1 Qc7 17. Rfe1 Rb8 18. Re3 b6 19. Bxh7+ 1-0

[Event "Sao Paulo Latin America Cup"]
[Site "Sao Paulo"]
[Date "1992.08.??"]
[Round "1"]
[White "Vaz, Osvaldo Jose"]
[Black "Segal, Alexandru Sorin"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "2315"]
[PlyCount "48"]
[EventDate "1992.08.08"]
[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 Nf6 2. Nc3 e5 3. Nf3 Bb4 4. Bc4 d6 5. 0-0 h6 6. h3 Bxc3 7. dxc3 Qe7 8. Qe2 Nbd7 9. b3 Nf8 10. a4 g5 11. Nh2 Ng6 12. g4 Be6 13. Rd1 Nd7 14. Bb5 Nf4 15. Bxd7+ Bxd7 16. Qf3 h5 17. Bxf4 gxf4 18. Kf1 hxg4 19. Nxg4 Qg5 20. Rd3 0-0-0 21. Qg2 f5 22. exf5 Bxf5 23. Rd2 f3 24. Qxf3 Bxg4 0-1

[Event "Sao Paulo Latin America Cup open"]
[Site "Sao Paulo"]
[Date "1991.09.??"]
[Round "5"]
[White "Gentil Junior, Luiz"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "D91"]
[PlyCount "93"]
[EventDate "1991.09.14"]
[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 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Bg5 Ne4 6. cxd5 Nxg5 7. Nxg5 e6 8. Nf3 exd5 9. e3 0-0 10. b4 a6 11. Qb3 c6 12. Be2 Bf5 13. 0-0 Nd7 14. a4 Rb8 15. b5 Re8 16. Rfc1 h5 17. Qd1 axb5 18. axb5 Nb6 19. Na4 Nxa4 20. Qxa4 Ra8 21. Qxa8 Qxa8 22. Rxa8 Rxa8 23. bxc6 bxc6 24. h3 Rc8 25. Nd2 Bf8 26. Nb3 Bd6 27. g4 hxg4 28. Bxg4 Bxg4 29. hxg4 Bb4 30. Nc5 Bxc5 31. Rxc5 g5 32. e4 dxe4 33. Rxg5+ Kf8 34. Re5 Re8 35. Rxe8+ Kxe8 36. Kf1 Ke7 37. Ke2 Ke6 38. Ke3 Kd5 39. g5 c5 40. dxc5 Kxc5 41. Kxe4 Kd6 42. Kf5 Ke7 43. g6 Kf8 44. Kf6 fxg6 45. Kxg6 Kg8 46. Kf6 Kf8 47. f4 1-0

[Event "Sao Paulo Latin America Cup open"]
[Site "Sao Paulo"]
[Date "1991.09.??"]
[Round "3"]
[White "Guimaraes, Wagner Peixoto"]
[Black "Vaz, Osvaldo Jose"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "2260"]
[PlyCount "97"]
[EventDate "1991.09.14"]
[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. d4 cxd4 3. c3 d3 4. Bxd3 Nc6 5. Nf3 d6 6. h3 Nf6 7. 0-0 e6 8. Qe2 Be7 9. Rd1 Qc7 10. Bf4 e5 11. Be3 0-0 12. Nbd2 h6 13. Nf1 Be6 14. Ng3 Rfe8 15. Qd2 Bf8 16. c4 b6 17. Nh4 Ne7 18. Rac1 Rac8 19. Rf1 Qd7 20. Kh2 Qd8 21. f4 exf4 22. Rxf4 Nc6 23. Rcf1 Ne5 24. Rxf6 gxf6 25. Nh5 f5 26. exf5 Bxf5 27. Rxf5 Re6 28. b3 Qxh4 29. Qe2 Nxd3 30. Qxd3 Bg7 31. Nxg7 Kxg7 32. Rf4 Qe7 33. Bd4+ Kf8 34. Qg3 Ke8 35. Qg8+ Kd7 36. Qh7 f5 37. Qxf5 Kc7 38. Bf6 Qd7 39. Rg4 Kb8 40. Rg7 Qe8 41. Qd5 Rc7 42. Rg4 Rxf6 43. Rg8 Rf8 44. Rxf8 Qxf8 45. Qe6 Qf4+ 46. Kh1 Qf1+ 47. Kh2 Qf4+ 48. g3 Qf2+ 49. Kh1 0-1

[Event "Sao Paulo Latin America Cup open"]
[Site "Sao Paulo"]
[Date "1991.09.??"]
[Round "2"]
[White "Vaz, Osvaldo Jose"]
[Black "Barbosa da Silva, Wilson"]
[Result "1-0"]
[ECO "B44"]
[PlyCount "63"]
[EventDate "1991.09.14"]
[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. d4 e6 3. Nf3 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 a6 7. N5a3 Nf6 8. Nc3 Be7 9. Be2 0-0 10. 0-0 Bd7 11. Be3 Ne5 12. f4 Ng6 13. Qe1 Qc7 14. Qg3 Bc6 15. Bf3 Rfd8 16. Qf2 Nd7 17. Nc2 Nh4 18. Be2 f5 19. Nd4 Nf8 20. Nxc6 Qxc6 21. g3 Nhg6 22. exf5 exf5 23. Nd5 Nd7 24. b3 Nc5 25. Bf3 Ne4 26. Bxe4 fxe4 27. f5 Rf8 28. fxg6 Rxf2 29. Nxe7+ Kh8 30. Nxc6 Rxf1+ 31. Rxf1 bxc6 32. gxh7 1-0

[Event "Sao Paulo Latin America Cup open"]
[Site "Sao Paulo"]
[Date "1991.09.??"]
[Round "4"]
[White "Vaz, Osvaldo Jose"]
[Black "De Haro, Martim Alfonso"]
[Result "1/2-1/2"]
[ECO "C69"]
[PlyCount "64"]
[EventDate "1991.09.14"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 f6 6. d4 exd4 7. Nxd4 Bd6 8. Be3 Ne7 9. Qh5+ Ng6 10. Nc3 0-0 11. Rad1 Ne5 12. h3 g6 13. Qe2 Qe7 14. Nf3 Nxf3+ 15. Qxf3 Qe5 16. Qg3 Qxg3 17. fxg3 Be6 18. g4 Be5 19. Bd4 Bc4 20. Rfe1 Rad8 21. Bxe5 fxe5 22. b3 Be6 23. Rxd8 Rxd8 24. Rd1 Rd6 25. Kf2 Kf7 26. g5 c5 27. Rxd6 cxd6 28. Nd5 Bxd5 29. exd5 Ke7 30. a4 Kd7 31. c3 Kc7 32. a5 b6 1/2-1/2

[Event "Sao Paulo Latin America Cup open"]
[Site "Sao Paulo"]
[Date "1991.09.??"]
[Round "10"]
[White "Vaz, Osvaldo Jose"]
[Black "Santos, Renato Andrade"]
[Result "0-1"]
[ECO "B36"]
[BlackElo "2265"]
[PlyCount "72"]
[EventDate "1991.09.14"]
[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. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Bg5 Qa5 10. Qd2 0-0 11. 0-0 Be6 12. Nd5 Qxd2 13. Nxe7+ Kh8 14. Bxd2 Nxe4 15. Be1 Rfe8 16. Nd5 Bxd5 17. cxd5 Nc5 18. Bb5 Re7 19. Bc3 Bxc3 20. bxc3 a6 21. Bc4 Rc8 22. a4 Re4 23. Ba2 Rxa4 24. f3 Re8 25. Rf2 b5 26. Rd1 Re3 27. Rc2 Ra3 28. Rdc1 Na4 29. Kf2 Rexc3 30. Rxc3 Nxc3 31. Bb1 b4 32. Bd3 Nxd5 33. Bc4 Nf4 34. Kg3 Rc3 35. Rxc3 bxc3 36. Bb3 Ne2+ 0-1

[Event "Sao Paulo Latin America Cup open"]
[Site "Sao Paulo"]
[Date "1991.09.??"]
[Round "8"]
[White "Vaz, Osvaldo Jose"]
[Black "Tubero, Marco Antonio"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "117"]
[EventDate "1991.09.14"]
[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. Bc4 Bg7 5. Qe2 c6 6. e5 dxe5 7. dxe5 Nd5 8. Bd2 Nd7 9. Nf3 N7b6 10. Bb3 0-0 11. 0-0-0 Bg4 12. h3 Bxf3 13. gxf3 Qc7 14. f4 Kh8 15. h4 h5 16. Rhg1 Kh7 17. Rg2 a5 18. a3 Nxc3 19. Bxc3 e6 20. Rdg1 Nd5 21. Bd2 b5 22. Bxd5 cxd5 23. Qxb5 Rfc8 24. Qa4 Bh6 25. Rg3 Qc4 26. Qxc4 Rxc4 27. b3 Rxf4 28. Bxf4 Bxf4+ 29. Kb2 Bxe5+ 30. c3 Bxg3 31. Rxg3 Rb8 32. Kc2 Kg7 33. b4 a4 34. Kd3 Rc8 35. Rg1 Kf6 36. b5 Ke5 37. Rb1 Kd6 38. Rb4 Ra8 39. b6 Kc6 40. f4 Rb8 41. c4 dxc4+ 42. Rxc4+ Kxb6 43. Rxa4 Rd8+ 44. Ke4 Rd5 45. Ra8 Kb7 46. Rf8 Rf5 47. a4 Kb6 48. Rb8+ Ka6 49. Re8 Rc5 50. Re7 Rf5 51. Re8 Ka5 52. Ra8+ Kb6 53. Rb8+ Ka5 54. Ra8+ Kb4 55. Ra6 Rc5 56. Kd4 Rc4+ 57. Ke5 Rc5+ 58. Kd4 Rd5+ 59. Ke3 1/2-1/2

[Event "Sao Paulo Latin America Cup open"]
[Site "Sao Paulo"]
[Date "1991.??.??"]
[Round "1"]
[White "Russek Libni, Guil"]
[Black "Vaz, Osvaldo Jose"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2395"]
[PlyCount "109"]
[EventDate "1991.09.14"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Nc6 6. Be2 cxd4 7. cxd4 e6 8. 0-0 Be7 9. Nc3 Qd6 10. Nb5 Qd8 11. Ne5 Bd7 12. Bg5 0-0 13. Nc3 Nd5 14. Bxe7 Ncxe7 15. Bf3 Rc8 16. Bxd5 Nxd5 17. Nxd5 exd5 18. Qd2 Bc6 19. Rfe1 Qb6 20. h3 Rc7 21. Rac1 f6 22. Nf3 Re8 23. Nh4 Rce7 24. Nf5 Re6 25. Rxe6 Rxe6 26. Re1 Bd7 27. Rxe6 Bxe6 28. Ne3 Kf7 29. b3 Qc7 30. g3 h5 31. h4 Qd7 32. Ng2 Bg4 33. Nf4 g5 34. hxg5 fxg5 35. Nd3 Kf6 36. Ne5 Qf5 37. Qb4 Qc8 38. Qd6+ Be6 39. Nf3 Kg7 40. Qe7+ Bf7 41. Nxg5 Qe8 42. Qxf7+ Qxf7 43. Nxf7 Kxf7 44. Kg2 Kf6 45. Kh3 Kf5 46. f3 Kg6 47. Kh4 Kh6 48. f4 Kg6 49. g4 hxg4 50. Kxg4 a6 51. b4 b6 52. f5+ Kf6 53. Kf4 a5 54. bxa5 bxa5 55. a4 1-0

