[Event "Brazil AXPG op 1st"]
[Site "Ponta Grossa"]
[Date "2017.10.29"]
[Round "6"]
[White "Bueno, Marcos Antonio Ferr"]
[Black "Okuma, Yutaka"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "1724"]
[PlyCount "121"]
[EventDate "2017.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. Nf3 d6 2. g3 Nf6 3. Bg2 g6 4. 0-0 Bg7 5. d4 0-0 6. Nbd2 c6 7. e4 Nh5 8. c3 Bg4 9. a4 a5 10. Nc4 Nf6 11. Qc2 Nbd7 12. Ne3 Bxf3 13. Bxf3 e5 14. Rd1 Qc7 15. b3 Ne8 16. Rb1 Rb8 17. b4 axb4 18. Rxb4 Qa5 19. Nc4 Qc7 20. Qb1 c5 21. dxc5 Nxc5 22. a5 Na6 23. Ra4 Qc6 24. Qa2 Rd8 25. Nb6 Qxc3 26. Ra3 Qc6 27. Nd5 Kh8 28. Rc3 Qd7 29. Be3 Qe6 30. Qb2 Qd7 31. Rdc1 h6 32. Nb6 Qe6 33. Qd2 Kh7 34. Be2 Nf6 35. f3 Nb8 36. Rc7 d5 37. exd5 Nxd5 38. Nxd5 Qxd5 39. Qxd5 Rxd5 40. Rxb7 Rxa5 41. Rcc7 Kg8 42. Bc4 Ra1+ 43. Kg2 Re1 44. Kf2 Ra1 45. Bc5 Rd8 46. Bxf7+ Kh8 47. Be3 Na6 48. Rd7 Rc8 49. Rd2 Nb8 50. Bxg6 Rac1 51. Bf5 Rf8 52. Be4 Rc4 53. Ke2 Rc1 54. h4 Rh1 55. Bc5 Rc8 56. Bf2 Rhc1 57. Bf5 Rf8 58. g4 h5 59. Be3 Ra1 60. Bg5 hxg4 61. fxg4 1-0

[Event "Brazil AXPG op 1st"]
[Site "Ponta Grossa"]
[Date "2017.10.29"]
[Round "7"]
[White "Okuma, Yutaka"]
[Black "Raifur, Gabriel Henrique Ch"]
[Result "1-0"]
[ECO "B40"]
[PlyCount "42"]
[EventDate "2017.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 c5 2. Bc4 e6 3. Nf3 d5 4. exd5 exd5 5. Be2 Nf6 6. 0-0 Bd6 7. h3 0-0 8. c3 Nc6 9. d4 Bf5 10. dxc5 Bxc5 11. b4 Bb6 12. a4 Be4 13. Nbd2 Qe7 14. Re1 Rfe8 15. Bf1 Qd6 16. Ba3 Qd7 17. Ng5 h6 18. Ngxe4 dxe4 19. Qc2 Qf5 20. Nxe4 Bc7 21. b5 Na5 1-0

[Event "Brazil AXPG op 1st"]
[Site "Ponta Grossa"]
[Date "2017.10.28"]
[Round "4"]
[White "Okuma, Yutaka"]
[Black "Carneiro, Paulo Irajara Borba"]
[Result "1/2-1/2"]
[ECO "B50"]
[BlackElo "1583"]
[PlyCount "33"]
[EventDate "2017.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 c5 2. Bc4 e6 3. Nf3 d6 4. d3 g6 5. a4 Bg7 6. 0-0 Nc6 7. c3 Nf6 8. Bb3 0-0 9. h3 h6 10. Be3 Na5 11. Bc2 e5 12. Nh2 Nc6 13. f4 exf4 14. Bxf4 Ne5 15. Kh1 Qb6 16. b3 Be6 17. Nd2 1/2-1/2

[Event "Brazil AXPG op 1st"]
[Site "Ponta Grossa"]
[Date "2017.10.28"]
[Round "5"]
[White "Salata, Arthur"]
[Black "Okuma, Yutaka"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "1349"]
[PlyCount "77"]
[EventDate "2017.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. d4 c5 2. d5 d6 3. c4 b5 4. Nc3 b4 5. Ne4 Bf5 6. Qc2 Qd7 7. Bg5 h6 8. Bh4 g5 9. Bg3 Bg7 10. e3 Bxe4 11. Qxe4 Bxb2 12. Rb1 Bc3+ 13. Kd1 Nf6 14. Qd3 h5 15. f3 h4 16. Bf2 Qa4+ 17. Qc2 Qxc2+ 18. Kxc2 a5 19. Bd3 Nfd7 20. Ne2 Bg7 21. Nc1 Ne5 22. f4 gxf4 23. exf4 Ng4 24. Be1 Ne3+ 25. Kd2 Nxg2 26. Rg1 h3 27. Bg3 Bd4 28. Rf1 Ne3 29. Re1 Ng2 30. Re2 Bc3+ 31. Kc2 Nh4 32. f5 Kd8 33. Nb3 Nd7 34. Nd2 Ne5 35. Rbe1 f6 36. Rg1 Bxd2 37. Bxh4 Bc3 38. Be1 Bd4 39. Rh1 0-1

[Event "Brazil AXPG op 1st"]
[Site "Ponta Grossa"]
[Date "2017.10.26"]
[Round "1"]
[White "Okuma, Yutaka"]
[Black "Broday, Geovani Allan"]
[Result "0-1"]
[ECO "B30"]
[BlackElo "2115"]
[PlyCount "45"]
[EventDate "2017.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 c5 2. Bc4 e6 3. Nf3 Nc6 4. c3 d5 5. exd5 exd5 6. Bb3 Nf6 7. h3 Bd6 8. 0-0 0-0 9. d3 h6 10. Bc2 d4 11. Re1 b5 12. cxd4 cxd4 13. a3 Bb7 14. b4 Rc8 15. Bb2 Bb8 16. Nbd2 Qc7 17. Rc1 Rfd8 18. Bb1 Qf4 19. g3 Qf5 20. Nh4 Qh7 21. Nf1 Ne5 22. Nh2 Nfg4 23. N2f3 0-1

[Event "Relampago R-035 corr"]
[Site "CXV corr"]
[Date "2001.08.28"]
[Round "?"]
[White "Lima da Silva, Antonio Carlos"]
[Black "Okuma, Yutaka"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "1481"]
[BlackElo "1734"]
[PlyCount "79"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 c6 6. h3 b5 7. a3 a5 8. Bd3 Ba6 9. b4 Nbd7 10. Bd2 axb4 11. axb4 Nb6 12. 0-0 Nfd7 13. d5 cxd5 14. Bxb5 dxe4 15. Bxa6 exf3 16. Qxf3 0-0 17. Bd3 Rxa1 18. Rxa1 Ne5 19. Qe2 Nc6 20. b5 Nd4 21. Qe3 Qc7 22. Rb1 e6 23. Rc1 d5 24. Ne2 Nc4 25. Bxc4 Qxc4 26. Nxd4 Bxd4 27. Qb3 Qe2 28. Be3 Bxe3 29. fxe3 Rb8 30. c4 dxc4 31. Rxc4 Qe1+ 32. Kh2 Qa5 33. Qb2 Qb6 34. e4 h5 35. Rc6 Qe3 36. Qe5 Qa7 37. b6 Qb7 38. Qc5 Kg7 39. Qe5+ Kh7 40. Rc7 1-0

[Event "Relampago R-035 corr"]
[Site "CXV corr"]
[Date "2001.08.21"]
[Round "?"]
[White "Okuma, Yutaka"]
[Black "Neumann Neto, Joao"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1749"]
[BlackElo "1776"]
[PlyCount "94"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. Nc3 d6 5. exd6 exd6 6. d4 Be7 7. Bd3 Nc6 8. Be3 0-0 9. Nge2 Nb4 10. 0-0 Re8 11. a3 Nxd3 12. Qxd3 d5 13. c5 Nc4 14. b3 Na5 15. Rab1 b6 16. Nf4 c6 17. Nh5 Bg4 18. Ng3 bxc5 19. dxc5 Nb7 20. b4 a5 21. h3 Bd7 22. Na4 axb4 23. Rxb4 Ra7 24. Qc2 Bh4 25. Nf5 Bxf5 26. Qxf5 Bf6 27. Rfb1 Qc7 28. Rg4 Be5 29. Kh1 Nd8 30. Rh4 g6 31. Qc2 Ne6 32. Rg4 d4 33. Bd2 f5 34. Qxf5 Rxa4 35. Bb4 Bg7 36. Qc2 Raa8 37. Qc4 Qf7 38. Rf1 Ng5 39. Qd3 Qd5 40. h4 Ne4 41. f4 Qf5 42. Qf3 h5 43. Rg5 Nxg5 44. hxg5 Re4 45. Kh2 Rxf4 46. Qxc6 Rxf1 47. Qxa8+ Kh7 0-1

[Event "Relampago R-035 corr"]
[Site "CXV corr"]
[Date "2001.08.20"]
[Round "?"]
[White "Oliveira Pinto, Oswaldo"]
[Black "Okuma, Yutaka"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "1713"]
[BlackElo "1767"]
[PlyCount "65"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. h3 c6 6. Bg5 Nbd7 7. e5 Nd5 8. Nxd5 cxd5 9. exd6 f6 10. Bc1 e6 11. c3 Qb6 12. Qc2 Qxd6 13. Bd3 a6 14. h4 b5 15. h5 f5 16. hxg6 hxg6 17. Rxh8+ Bxh8 18. Bg5 Nf6 19. 0-0-0 Ng8 20. Rh1 Bg7 21. Qe2 b4 22. c4 Qc6 23. Rh7 Kf8 24. Ne5 Qe8 25. c5 Ra7 26. g4 Ne7 27. Bh6 Bxh6+ 28. Rxh6 Kg7 29. g5 a5 30. f4 Qg8 31. Qh2 Ra8 32. Rxg6+ Nxg6 33. Qh6# 1-0

[Event "Relampago R-035 corr"]
[Site "CXV corr"]
[Date "2001.08.12"]
[Round "?"]
[White "Okuma, Yutaka"]
[Black "Prado, Mauricio"]
[Result "0-1"]
[ECO "C15"]
[WhiteElo "1775"]
[BlackElo "1963"]
[PlyCount "64"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd3 dxe4 5. Bxe4 Nf6 6. Bf3 c5 7. Nge2 cxd4 8. Qxd4 Qxd4 9. Nxd4 a6 10. Bd2 e5 11. Nde2 Nc6 12. a3 Be7 13. h3 0-0 14. Bxc6 bxc6 15. Ng3 Rb8 16. b4 c5 17. Na2 Nd5 18. c3 Rd8 19. Ne4 cxb4 20. axb4 Bb7 21. Nc5 Bxc5 22. bxc5 Rbc8 23. Rb1 Rd7 24. Nb4 f6 25. c6 Bxc6 26. Nxa6 Bb7 27. Nb4 Nxb4 28. cxb4 Bxg2 29. Rh2 Bf3 30. h4 Rc4 31. Rh3 Rg4 32. Kf1 Bg2+ 0-1

[Event "Relampago R-035 corr"]
[Site "CXV corr"]
[Date "2001.07.03"]
[Round "?"]
[White "Okuma, Yutaka"]
[Black "Lima, Paulo Roberto"]
[Result "0-1"]
[ECO "C58"]
[WhiteElo "1802"]
[BlackElo "1523"]
[PlyCount "72"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. d3 h6 7. Nf3 e4 8. Qe2 Nxc4 9. dxc4 Bc5 10. h3 0-0 11. Nfd2 e3 12. fxe3 Bxe3 13. Kd1 Re8 14. Qd3 Nh5 15. Nf3 Nf4 16. Qf1 Bxc1 17. Kxc1 Ne2+ 18. Kd1 Ng3 19. Qg1 Nxh1 20. Qxh1 c6 21. Nc3 cxd5 22. cxd5 b5 23. b4 Bb7 24. Kd2 Bxd5 25. Nxd5 Qxd5+ 26. Kc1 Qc4 27. a3 Rac8 28. Qd1 Red8 29. Nd2 Qc3 30. Ra2 Rc6 31. Qe2 Re6 32. Nb1 Qf6 33. c4 Qf4+ 34. Nd2 Rxe2 35. c5 Re1+ 36. Kc2 Qxd2+ 0-1

[Event "Relampago R-035 corr"]
[Site "CXV corr"]
[Date "2001.06.01"]
[Round "?"]
[White "De Almeida Peres, Gilberto"]
[Black "Okuma, Yutaka"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1448"]
[BlackElo "1790"]
[PlyCount "27"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qc7 4. 0-0 g6 5. Nc3 e6 6. Bxc6 bxc6 7. d4 Nf6 8. Bg5 Ng4 9. e5 cxd4 10. Qxd4 Nh6 11. Ne4 Ng8 12. Nd6+ Bxd6 13. exd6 Qa5 14. Qxh8 1-0

[Event "Brasilia open"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "1"]
[White "Lemos, Jorge Joao"]
[Black "Okuma, Yutaka"]
[Result "1-0"]
[ECO "A05"]
[PlyCount "75"]
[EventDate "1987.04.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 d6 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 5. Bb2 c6 6. 0-0 0-0 7. d3 Bg4 8. Nbd2 Qc8 9. e4 e5 10. Nc4 Rd8 11. Ne3 Bh3 12. Ng5 Bxg2 13. Kxg2 h6 14. Nh3 Nh5 15. f4 exf4 16. Bxg7 Kxg7 17. Nxf4 Nxf4+ 18. Rxf4 Qe6 19. Qd2 h5 20. Raf1 Rf8 21. g4 Nd7 22. gxh5 Rh8 23. Qf2 Raf8 24. Rh4 Rh6 25. Qg3 Rfh8 26. Nf5+ Kf8 27. Nxh6 Rxh6 28. Rhf4 Rxh5 29. Rxf7+ Ke8 30. Qf4 Rh8 31. d4 b5 32. Rf3 a5 33. Rg7 Rf8 34. Qg3 Qxe4 35. Qxg6+ Qxg6+ 36. Rxg6 Ke7 37. Rg7+ Ke6 38. Re3+ 1-0

[Event "Brasilia open"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "5"]
[White "Moraes, Wilson Zorob"]
[Black "Okuma, Yutaka"]
[Result "1-0"]
[ECO "E91"]
[PlyCount "33"]
[EventDate "1987.04.??"]
[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 d6 3. c4 g6 4. Nc3 Bg7 5. e4 0-0 6. Be2 Nfd7 7. Be3 Nc6 8. Qd2 e5 9. d5 Ne7 10. h4 f5 11. Bg5 Nf6 12. Bxf6 Bxf6 13. h5 Kf7 14. Ng5+ Bxg5 15. Qxg5 Ng8 16. hxg6+ hxg6 17. Rh7+ 1-0

[Event "Brasilia open"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "4"]
[White "Okuma, Yutaka"]
[Black "Cabral, Pedro Costa"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "163"]
[EventDate "1987.04.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 e5 4. d4 cxd4 5. cxd4 exd4 6. Nxd4 Nf6 7. f3 Bb4+ 8. Bd2 Qa5 9. Nf5 0-0 10. a3 Bxd2+ 11. Qxd2 Qxd2+ 12. Nxd2 Re8 13. Nd6 Re6 14. N2c4 b5 15. Nxb5 d5 16. Nc7 dxe4 17. Nxa8 exf3+ 18. Kf2 Ne4+ 19. Kxf3 Nd4+ 20. Ke3 Nc2+ 21. Kf3 Nxa1 22. Nc7 Ng5+ 23. Kf2 Rf6+ 24. Ke3 Nc2+ 25. Kd3 Bf5+ 26. Kc3 Ne4+ 27. Kb3 Nd4+ 28. Kb4 Nc6+ 29. Kb3 Nd4+ 30. Kb4 Nc2+ 31. Kb3 Nc5+ 32. Kc3 Be4 33. Rg1 Rf2 34. Nb5 Bf5 35. Nxa7 Ne4+ 36. Kb3 Be6 37. Bd3 Nd2+ 38. Kc3 Nxc4 39. Bxc2 Ne3 40. Be4 f5 41. Bf3 g5 42. h3 f4 43. b4 Rc2+ 44. Kd4 Ra2 45. Ke5 Kf7 46. Nb5 Nc4+ 47. Kd4 Nxa3 48. Nxa3 Rxa3 49. Be4 h6 50. Rc1 Ke7 51. Rc7+ Kd6 52. Rc6+ Kd7 53. Ke5 Bf7 54. Rxh6 Rb3 55. b5 Rxb5+ 56. Kf6 Be8 57. Bf5+ Kc7 58. Kxg5 Bd7 59. Rf6 Bc6 60. Kxf4 Bxg2 61. h4 Kd8 62. h5 Ke7 63. Rg6 Rb8 64. Rxg2 Rh8 65. Re2+ Kf6 66. Re6+ Kg7 67. Kg5 Kf7 68. h6 Rg8+ 69. Kh5 Rh8 70. Rb6 Rd8 71. h7 Kg7 72. Rb7+ Kh8 73. Rb6 Rf8 74. Kg6 Rd8 75. Kf7 Ra8 76. Re6 Rf8+ 77. Kg6 Rd8 78. Rf6 Rb8 79. Be6 Rd8 80. Kh6 Rb8 81. Rg6 Rd8 82. Rg8+ 1-0

[Event "BRA-chT Inter-Clubes"]
[Site "Curitiba"]
[Date "1987.04.??"]
[Round "2"]
[White "Okuma, Yutaka"]
[Black "Couto, Januario Pereira Do"]
[Result "1-0"]
[ECO "B50"]
[PlyCount "49"]
[EventDate "1987.04.30"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Clube da Lagoa"]
[BlackTeam "Refripar ADC II"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 a6 5. Bb3 g6 6. Bg5 Nbd7 7. Nbd2 Bg7 8. c3 Rb8 9. Bh4 0-0 10. 0-0 b5 11. Bc2 e6 12. Ng5 Qc7 13. f4 c4 14. d4 d5 15. f5 Nxe4 16. Ndxe4 dxe4 17. fxe6 fxe6 18. Nxe6 Rxf1+ 19. Qxf1 Qd6 20. Nxg7 Kxg7 21. Bg3 Qc6 22. Bxb8 Nxb8 23. Qf4 Qb6 24. Bxe4 Qf6 25. Qxb8 1-0

[Event "Brasilia open"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "6"]
[White "Okuma, Yutaka"]
[Black "Goncalves, Alexandre"]
[Result "0-1"]
[ECO "C48"]
[PlyCount "40"]
[EventDate "1987.04.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bc5 5. d3 h6 6. Bxc6 dxc6 7. 0-0 Qe7 8. h3 0-0 9. a3 a5 10. Ne2 Nh7 11. Bd2 f5 12. Ng3 f4 13. Ne2 Ng5 14. Nxg5 Qxg5 15. Kh2 Rf6 16. Qe1 Be6 17. Rg1 Qh4 18. Qf1 Bxf2 19. Rh1 Qg3+ 20. Nxg3 fxg3# 0-1

[Event "Brasilia open"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "2"]
[White "Okuma, Yutaka"]
[Black "Vincenzo, Jose Eduardo"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "51"]
[EventDate "1987.04.??"]
[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 d6 2. d4 Nf6 3. Bd3 e5 4. c3 Nc6 5. Be3 g6 6. h3 Bg7 7. Ne2 0-0 8. 0-0 a6 9. f4 Bh6 10. Qc1 exf4 11. Bxf4 Bxf4 12. Qxf4 Nh5 13. Qf2 Qg5 14. Kh2 Ne7 15. Ng1 Kh8 16. Nf3 Qh6 17. Qh4 f6 18. Ng1 g5 19. Qe1 g4 20. Be2 Ng6 21. Bxg4 Bxg4 22. hxg4 Nhf4+ 23. Nh3 Nd3 24. Qe2 Ndf4 25. Qd2 Nxh3 26. Qxh6 1-0

[Event "Brasilia open"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "3"]
[White "Silva, Joao Baptista"]
[Black "Okuma, Yutaka"]
[Result "1-0"]
[ECO "B09"]
[PlyCount "45"]
[EventDate "1987.04.??"]
[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 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 c6 6. Be2 Nbd7 7. 0-0 0-0 8. h3 b5 9. a3 a5 10. e5 dxe5 11. fxe5 Nh5 12. Qe1 Bh8 13. Ng5 Ng7 14. Qh4 h5 15. Bd3 f6 16. exf6 exf6 17. Nf3 g5 18. Qe4 Nb8 19. Qh7+ Kf7 20. Nxg5+ Ke7 21. Re1+ Kd7 22. Ne6 Qe7 23. Nc5+ 1-0

[Event "BRA-chT"]
[Site "Curitiba"]
[Date "1984.??.??"]
[Round "5"]
[White "Fernandes, Acacio Mariano"]
[Black "Okuma, Yutaka"]
[Result "1/2-1/2"]
[ECO "B08"]
[PlyCount "42"]
[EventDate "1984.??.??"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Bc4 0-0 6. 0-0 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. Bxf6 Bxf6 11. Nd5 Bd8 12. Rad1 c6 13. Ne3 Bf6 14. Rd2 Nd7 15. b4 Bg7 16. Rfd1 Nf8 17. Rd8 Be6 18. R8d2 b5 19. Bxe6 Nxe6 20. c3 Rad8 21. Rxd8 Rxd8 1/2-1/2

[Event "BRA-chT"]
[Site "Curitiba"]
[Date "1984.??.??"]
[Round "2"]
[White "Okuma, Yutaka"]
[Black "Biaba, Alzir"]
[Result "0-1"]
[ECO "D48"]
[PlyCount "100"]
[EventDate "1984.??.??"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. e3 e6 5. Nc3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. a3 c5 10. Be2 Bb7 11. 0-0 cxd4 12. Nxd4 Be7 13. Nf3 0-0 14. Ne1 Qc7 15. f4 Rfd8 16. Qc2 Rac8 17. Qb1 Nc5 18. b4 Nce4 19. Nxe4 Bxe4 20. Bd3 Rxd3 21. Nxd3 Rd8 22. Rd1 Qc4 23. Qa2 Rxd3 24. Rxd3 Qxd3 25. Qd2 Nd5 26. Qxd3 Bxd3 27. Bd2 Kf8 28. Rc1 Bc4 29. Kf2 f5 30. Kf3 Nf6 31. Bc3 Ne4 32. Be5 g5 33. g4 Nd2+ 34. Kg3 fxg4 35. Kxg4 gxf4 36. Bxf4 Be2+ 37. Kh3 Nc4 38. Kg3 Kf7 39. Kf2 Bh5 40. e4 e5 41. Bg3 Bg5 42. Rc3 Ke6 43. a4 Bg6 44. axb5 axb5 45. Kf3 Nd2+ 46. Kg4 Nxe4 47. Rc6+ Kd5 48. Rb6 Be8 49. Rb7 h5+ 50. Kf5 Nd6+ 0-1

[Event "BRA-chT"]
[Site "Curitiba"]
[Date "1984.??.??"]
[Round "3"]
[White "Okuma, Yutaka"]
[Black "Ribeiro, Regina"]
[Result "0-1"]
[ECO "C47"]
[BlackElo "2255"]
[PlyCount "92"]
[EventDate "1984.??.??"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a3 d5 5. exd5 Nxd5 6. h3 Bc5 7. Bb5 0-0 8. 0-0 Nxc3 9. bxc3 e4 10. Nh2 f5 11. d3 exd3 12. cxd3 Qf6 13. d4 Bd6 14. f4 Ne7 15. Nf3 Kh8 16. Bc4 Bd7 17. Ne5 Be8 18. Rb1 b6 19. Qf3 Rd8 20. a4 c5 21. Be3 Bxe5 22. fxe5 Qh4 23. Bf2 Qg5 24. Be3 Qh4 25. Qf4 Qxf4 26. Rxf4 Ng6 27. Rff1 f4 28. Bf2 Bxa4 29. Ra1 b5 30. Bd3 Ne7 31. Bh4 Rd7 32. Bxe7 Rxe7 33. Be4 Bb3 34. Ra5 Bc4 35. Rfa1 Rd8 36. Rd1 Rxe5 37. Bc6 cxd4 38. cxd4 Rg5 39. Rxa7 Be2 40. Rd2 f3 41. Rf7 Rxg2+ 42. Kh1 Rf2 43. Kg1 Rg2+ 44. Kh1 Bc4 45. Rxg2 fxg2+ 46. Kxg2 Bxf7 0-1

