[Event "Caetano Jogos Region op"]
[Site "Caetano"]
[Date "1997.??.??"]
[Round "5"]
[White "Dumont, Sadi Glasser"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2290"]
[BlackElo "2380"]
[PlyCount "70"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Nc6 5. Be2 dxe4 6. dxe4 Bc5 7. 0-0 e5 8. c3 a5 9. Qc2 0-0 10. Nc4 Qe7 11. a4 Nh5 12. Ne3 Nf4 13. Nd5 Nxd5 14. exd5 Nd8 15. Re1 f6 16. Bd3 g6 17. Bh6 Re8 18. Bxg6 hxg6 19. Qxg6+ Kh8 20. Bg7+ Qxg7 21. Qxe8+ Bf8 22. Re4 Bd7 23. Qh5+ Kg8 24. Rae1 Nf7 25. Nh4 Nd6 26. R4e3 Bg4 27. Qxg4 Qxg4 28. Rg3 Qxg3 29. hxg3 Ra6 30. c4 Nxc4 31. Rc1 Nxb2 32. Rxc7 Nxa4 33. Nf5 Nb6 34. d6 a4 35. Rc8 a3 0-1

[Event "Caetano Jogos Region op"]
[Site "Caetano"]
[Date "1997.??.??"]
[Round "1"]
[White "Watanabe, Roberto Tadashi"]
[Black "Luiz, Joao"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "2380"]
[PlyCount "67"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Bg4 5. h3 Bxf3 6. Qxf3 e6 7. Bc4 Be7 8. Qg3 g6 9. d3 Nd7 10. Bf4 Ndf6 11. Nxf6+ Nxf6 12. Be5 Nh5 13. Qe3 0-0 14. 0-0 Bf6 15. d4 Qe7 16. Rad1 Rad8 17. c3 Bg7 18. Rfe1 b5 19. Bf1 Nf6 20. Qf3 Nd5 21. Bxg7 Kxg7 22. Re5 Qf6 23. Qe4 Nf4 24. Qxc6 b4 25. g3 Rc8 26. Qe4 Nd5 27. cxb4 Nxb4 28. Ra5 Rc2 29. Qe5 Rfc8 30. Qxf6+ Kxf6 31. a3 Nd5 32. Rb1 R8c7 33. b4 Nc3 34. Rb3 1/2-1/2

[Event "Caetano Jogos Region op"]
[Site "Caetano"]
[Date "1997.??.??"]
[Round "3"]
[White "Watanabe, Roberto Tadashi"]
[Black "Oliveira, Paulo Sergio De Cas"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "2380"]
[BlackElo "2165"]
[PlyCount "102"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 Qe7+ 9. Qe2 Qxe2+ 10. Kxe2 Nxd5 11. Ne4 f5 12. Ng5 0-0 13. Rd1 Bb7 14. Kf1 Rae8 15. Bd2 Bd6 16. Re1 h6 17. Rxe8 Rxe8 18. Nf3 f4 19. Re1 Rf8 20. Nd4 g5 21. Re6 Rf6 22. Rxf6 Nxf6 23. Nf5 Bf8 24. Ba5 Nd5 25. Bc4 Kh7 26. Ke2 c5 27. Bd3 Kg8 28. f3 Kf7 29. Be4 Ba6+ 30. Kf2 Nb6 31. Bc3 Bc8 32. Be5 Bxf5 33. Bxf5 Bd6 34. Bh8 Kg8 35. Bc3 Na4 36. Be6+ Kf8 37. Bf6 Be7 38. Bh8 Nb6 39. Ke2 Bd6 40. Kd3 Ke7 41. Bh3 Nd5 42. Ke4 Ne3 43. c3 h5 44. g3 Nd1 45. g4 Nf2+ 46. Kf5 Nxh3 47. gxh5 Kf7 48. Bf6 Bf8 49. Be5 c6 50. Bb8 a6 51. Bc7 Be7 0-1

[Event "Caetano Jogos Region op"]
[Site "Caetano"]
[Date "1997.??.??"]
[Round "6"]
[White "Watanabe, Roberto Tadashi"]
[Black "Tsuboi, Edson Kenji"]
[Result "0-1"]
[ECO "D03"]
[WhiteElo "2380"]
[BlackElo "2310"]
[PlyCount "67"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 0-0 6. Bd3 c5 7. c3 Nbd7 8. b4 b6 9. 0-0 a6 10. bxc5 bxc5 11. Rb1 c4 12. Bc2 Qa5 13. e4 dxe4 14. Nxe4 Ra7 15. Nxf6+ Nxf6 16. Ne5 Rc7 17. Qf3 Qxa2 18. Rfc1 Qa5 19. Ra1 Qd5 20. Qxd5 Nxd5 21. Be4 e6 22. Bh4 f6 23. Nf3 Bh6 24. Rc2 Bf4 25. Bg3 Bxg3 26. hxg3 Rd8 27. Nd2 Rd6 28. Bf3 Kg7 29. Ne4 Rd8 30. Nc5 e5 31. Ra5 Re7 32. Nxa6 e4 33. Be2 Bxa6 34. Rxa6 0-1

[Event "Braganca Paulista JAI"]
[Site "Braganca Paulista"]
[Date "1996.10.??"]
[Round "4"]
[White "Varella, V."]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "B33"]
[BlackElo "2380"]
[PlyCount "80"]
[EventDate "1996.10.06"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Bauru"]
[BlackTeam "Osasco"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Nd5 Be7 11. Bxf6 Bxf6 12. c4 b4 13. Qa4 Bd7 14. Nxb4 Nd4 15. Qd1 Rb8 16. Qd2 Bg5 17. Qc3 Qb6 18. Nd3 Qb7 19. f3 f5 20. exf5 Bh4+ 21. Kd2 0-0 22. Be2 Bg5+ 23. Kd1 Nxe2 24. Kxe2 e4 25. Nf2 exf3+ 26. gxf3 Qxb2+ 27. Qxb2 Rxb2+ 28. Kf1 Rxf5 29. h4 Bf6 30. Rb1 Rxa2 31. Rb8+ Kf7 32. Rb3 Bc6 33. Kg2 Rxf3 34. Rxf3 Rxa3 35. Rhh3 a5 36. Ng4 a4 37. Kf2 Rxf3+ 38. Rxf3 Bxf3 39. Kxf3 Bd4 40. Ke4 a3 0-1

[Event "Braganca Paulista JAI"]
[Site "Braganca Paulista"]
[Date "1996.10.??"]
[Round "7"]
[White "Watanabe, Roberto Tadashi"]
[Black "Sega, Carlos Alberto"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2380"]
[PlyCount "59"]
[EventDate "1996.10.06"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Osasco"]
[BlackTeam "Santos"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. g3 e5 2. Bg2 Nf6 3. d3 d5 4. Nf3 Nc6 5. 0-0 Be7 6. Bg5 Bg4 7. Nc3 Qd7 8. Nd2 Nd4 9. f3 Be6 10. e3 Nc6 11. Bxf6 Bxf6 12. e4 0-0-0 13. exd5 Bxd5 14. Nxd5 Qxd5 15. f4 Qd7 16. Ne4 Qd4+ 17. Kh1 Be7 18. Qg4+ Kb8 19. Qxg7 f5 20. Nc3 Rhg8 21. Qf7 Rgf8 22. Qb3 Rd6 23. Nb5 Qc5 24. Nxd6 Bxd6 25. fxe5 Bxe5 26. c3 Qd6 27. d4 Bg7 28. Rae1 Nd8 29. Qd5 Qg6 30. Qd7 1-0

[Event "BRA-chT"]
[Site "Sao Jose de Rio Preto"]
[Date "1995.??.??"]
[Round "6"]
[White "Sunye Neto, Jaime"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "A86"]
[WhiteElo "2510"]
[BlackElo "2380"]
[PlyCount "49"]
[EventDate "1995.??.??"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 f5 5. e3 d6 6. Nge2 Nf6 7. d4 0-0 8. b3 c6 9. Ba3 Re8 10. 0-0 e4 11. Qd2 d5 12. Rac1 Na6 13. cxd5 cxd5 14. Rc2 Bd7 15. Rfc1 Bc6 16. Na4 Nc7 17. Nc5 Nb5 18. Bb2 g5 19. a4 Nd6 20. Ba3 a5 21. Bh3 Bf8 22. Rc3 Ng4 23. Bg2 Rc8 24. Qa2 Kh8 25. R3c2 1/2-1/2

[Event "Curitiba 300 years op"]
[Site "Curitiba"]
[Date "1993.11.??"]
[Round "6"]
[White "Barreto, Ignacio C de Barro"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "2380"]
[PlyCount "66"]
[EventDate "1993.11.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. c4 c6 6. Nc3 Ne7 7. Bg5 f6 8. Be3 0-0 9. Qb3 Kh8 10. Bd3 dxc4 11. Bxc4 Qb6 12. Qc2 Bf5 13. Qd2 Qc7 14. h3 Nd7 15. g4 Nb6 16. Bb3 Bg6 17. Rc1 Rae8 18. Nh4 Bf7 19. Bxf7 Rxf7 20. Nb5 Qb8 21. Nxd6 Qxd6 22. 0-0 Nbd5 23. Rfe1 g5 24. Nf3 h5 25. Bxg5 hxg4 26. hxg4 fxg5 27. Ne5 Rh7 28. Qxg5 Rg8 29. Qh5 Qf6 30. Nd7 Rxh5 31. Nxf6 Nxf6 32. Kf1 Rxg4 33. f3 Rxd4 0-1

[Event "Curitiba 300 years op"]
[Site "Curitiba"]
[Date "1993.11.??"]
[Round "8"]
[White "Chemin, Vitorio"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2245"]
[BlackElo "2380"]
[PlyCount "167"]
[EventDate "1993.11.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6 5. Be2 c5 6. c3 0-0 7. 0-0 b6 8. Nbd2 Bb7 9. a4 Nc6 10. h3 Re8 11. Bh2 Rc8 12. Qb1 Qd7 13. b4 Nd5 14. Qb3 cxb4 15. cxb4 Ndxb4 16. d5 Nxd5 17. Qxd5 Nd4 18. Bb5 Nxb5 19. Qxb5 Qxb5 20. axb5 Bxa1 21. Rxa1 a5 22. bxa6 Ra8 23. a7 Rec8 24. Nd4 Rc5 25. N2b3 Rc3 26. Bg3 e5 27. Nb5 Rxb3 28. Nxd6 Bd5 29. Bxe5 Kf8 30. Rd1 Be6 31. Ne4 Bf5 32. Nf6 Be6 33. Bb8 Ke7 34. Ng8+ Ke8 35. Rd6 b5 36. e4 Rb1+ 37. Kh2 b4 38. e5 Ra1 39. Nf6+ Ke7 40. Rb6 R1xa7 41. Bxa7 Rxa7 42. Rxb4 h5 43. Rb8 Bd7 44. Rb6 Ba4 45. Nd5+ Kf8 46. Rb8+ Kg7 47. Nf6 h4 48. Rb4 g5 49. Rg4 Kh6 50. Ne4 Bd7 51. Rxg5 Ra4 52. e6 Bxe6 53. Re5 Ra2 54. f3 Rb2 55. Nc3 Rc2 56. Ne2 Rc4 57. Kg1 Kg6 58. Kf2 Bf5 59. Ke3 Kf6 60. Re8 Ra4 61. Nc3 Rc4 62. Nd5+ Kg7 63. Re5 Bg6 64. Rg5 Kh6 65. Rg4 Rxg4 66. hxg4 Kg5 67. Nf4 Bb1 68. Nh3+ Kg6 69. f4 f5 70. g5 Be4 71. Kf2 Kh5 72. Ng1 Kg4 73. Ne2 Bd5 74. g6 h3 75. gxh3+ Kh5 76. g7 Kg6 77. Nd4 Bg8 78. Kg3 Kxg7 79. Nxf5+ Kf6 80. Nd4 Bf7 81. Kg4 Bd5 82. h4 Be4 83. h5 Bh7 84. f5 1-0

[Event "Curitiba 300 years op"]
[Site "Curitiba"]
[Date "1993.11.??"]
[Round "2"]
[White "Santana, Esli"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "B40"]
[BlackElo "2380"]
[PlyCount "51"]
[EventDate "1993.11.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bg5 h6 6. Bh4 g5 7. Bg3 Nxe4 8. Be5 Qa5+ 9. c3 Qxe5 10. Be2 Nc6 11. Nf3 Qc7 12. 0-0 d5 13. Nbd2 Bd6 14. Bd3 Nxd2 15. Qxd2 g4 16. g3 gxf3 17. Rfe1 Bd7 18. b4 0-0-0 19. Qe3 Kb8 20. Bf1 Ne5 21. Bh3 h5 22. a4 h4 23. g4 Rdg8 24. Qd4 f5 25. Rxe5 Bxe5 26. Qc5 0-1

[Event "Curitiba 300 years op"]
[Site "Curitiba"]
[Date "1993.11.??"]
[Round "4"]
[White "Toloza Soto, Pablo Alejandro"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "E70"]
[WhiteElo "2190"]
[BlackElo "2380"]
[PlyCount "59"]
[EventDate "1993.11.16"]
[EventType "swiss"]
[EventRounds "9"]
[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. Bd3 0-0 6. Nge2 c5 7. d5 e6 8. 0-0 exd5 9. exd5 Re8 10. Bg5 h6 11. Bh4 Nbd7 12. f4 a6 13. h3 Qc7 14. a4 Nh7 15. Qc2 f5 16. Rf3 Ndf8 17. Bf2 Bd7 18. Kh2 Re7 19. Rg1 Nf6 20. Bh4 Rae8 21. Bxf6 Bxf6 22. g4 fxg4 23. hxg4 Re3 24. Rxe3 Rxe3 25. Bxg6 Qd8 26. Rg3 Bd4 27. Rxe3 Qh4+ 28. Kg2 Bxe3 29. Bf5 Qf2+ 30. Kh3 1/2-1/2

[Event "Curitiba 300 years op"]
[Site "Curitiba"]
[Date "1993.11.??"]
[Round "3"]
[White "Watanabe, Roberto Tadashi"]
[Black "Bere Filho, Romulo Fernando"]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "2380"]
[PlyCount "31"]
[EventDate "1993.11.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Ng5 e6 6. Bd3 Ngf6 7. N1f3 Bd6 8. Qe2 Nb6 9. Ne5 0-0 10. Bd2 c5 11. dxc5 Bxc5 12. 0-0 Qc7 13. Ng4 Nbd7 14. Nxf6+ Nxf6 15. Bc3 Qf4 16. Bxf6 1-0

[Event "Curitiba 300 years op"]
[Site "Curitiba"]
[Date "1993.11.??"]
[Round "9"]
[White "Watanabe, Roberto Tadashi"]
[Black "Calcado, Acyr Rogerio"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2380"]
[BlackElo "2240"]
[PlyCount "75"]
[EventDate "1993.11.16"]
[EventType "swiss"]
[EventRounds "9"]
[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 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 h6 8. e5 Nd5 9. Qg4 Kf8 10. 0-0 Qe7 11. Nxd5 cxd5 12. c3 Bc5 13. Qg3 a5 14. Bf4 c6 15. Rad1 Ba6 16. Bxa6 Rxa6 17. Rd3 Qe6 18. Rfd1 Kg8 19. Be3 Bxe3 20. Qxe3 Kh7 21. c4 Re8 22. f4 Rb8 23. cxd5 cxd5 24. b3 a4 25. Rxd5 axb3 26. axb3 Ra2 27. Qe4+ g6 28. Rd6 Qxb3 29. f5 Qc2 30. fxg6+ Kg7 31. Qf3 Qc5+ 32. Kh1 Rf2 33. Qg3 Rb7 34. gxf7+ Kxf7 35. Qg6+ Ke7 36. Rf6 Re2 37. Re6+ Kd8 38. Qe8+ 1-0

[Event "Curitiba 300 years op"]
[Site "Curitiba"]
[Date "1993.11.??"]
[Round "7"]
[White "Watanabe, Roberto Tadashi"]
[Black "Dantas, Bianor da Silva"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "2380"]
[BlackElo "2275"]
[PlyCount "73"]
[EventDate "1993.11.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Bd3 c4 9. Be2 Nf5 10. Nf3 Nc6 11. Qf4 h6 12. a4 Qa5 13. Qd2 Bd7 14. Ba3 h5 15. 0-0 f6 16. Rfe1 0-0-0 17. Bf1 h4 18. h3 Rdg8 19. Nh2 fxe5 20. dxe5 Be8 21. Be2 Bh5 22. Bg4 Bg6 23. Nf3 Re8 24. Ng5 d4 25. Qe2 Qxc3 26. Ne4 d3 27. Qf3 Qxc2 28. Bxf5 Bxf5 29. Nd6+ Kc7 30. Nxf5 d2 31. Bd6+ Kc8 32. Re4 Qc1+ 33. Kh2 Qxa1 34. Rxc4 d1Q 35. Rxc6+ Kd7 36. Rc7+ Kd8 37. Rd7+ 1-0

[Event "Curitiba 300 years op"]
[Site "Curitiba"]
[Date "1993.11.??"]
[Round "5"]
[White "Watanabe, Roberto Tadashi"]
[Black "Santos Neto, Francisco Jose"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2380"]
[PlyCount "45"]
[EventDate "1993.11.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Bxc3 8. bxc3 Qc7 9. f4 a6 10. Qg4 0-0 11. Bd3 f5 12. exf6 Nxf6 13. Qe2 b5 14. 0-0 Bb7 15. a4 Nc6 16. Nf3 Na5 17. axb5 axb5 18. Ne5 Nc4 19. Rxa8 Rxa8 20. Nxc4 bxc4 21. Bxc4 Ne4 22. Bd3 Nxc3 23. Qh5 1/2-1/2

[Event "Curitiba 300 years op"]
[Site "Curitiba"]
[Date "1993.11.??"]
[Round "1"]
[White "Watanabe, Roberto Tadashi"]
[Black "Tirado Augusto, St Brigida"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2380"]
[PlyCount "104"]
[EventDate "1993.11.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. Nf3 c6 5. a4 b6 6. Be2 e6 7. 0-0 Ne7 8. Bf4 h6 9. Qd2 g5 10. Bg3 Ng6 11. Rfe1 g4 12. Nh4 Nxh4 13. Bxg4 0-0 14. Bf4 e5 15. Bxc8 Qxc8 16. dxe5 dxe5 17. Bg3 Ng6 18. Rad1 Na6 19. h4 Qg4 20. Re3 Nf4 21. Bxf4 exf4 22. Rf3 Rad8 23. Qxd8 Rxd8 24. Rxd8+ Kh7 25. Ne2 Be5 26. Re8 Bc7 27. Re7 Kg7 28. Nd4 Qc8 29. Nf5+ Kf8 30. g4 Nc5 31. b4 Nd7 32. Rd3 Ne5 33. Rd1 Qb8 34. h5 Bd8 35. Rb7 Qc8 36. Rxa7 Bc7 37. b5 Qb8 38. Ra6 c5 39. a5 Nc4 40. Rd7 Kg8 41. Nxh6+ Kg7 42. g5 Ne5 43. Nf5+ Kg8 44. Rd5 Nf3+ 45. Kg2 Nxg5 46. Ne7+ Kf8 47. Nc6 f3+ 48. Kf1 Qc8 49. Rxg5 Qh3+ 50. Ke1 Qh1+ 51. Kd2 Bf4+ 52. Kc3 Bxg5 0-1

[Event "BRA-chT Inter-Clubes 12th"]
[Site "Curitiba"]
[Date "1993.09.??"]
[Round "5"]
[White "Braitt, Milton dos Santos"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "C30"]
[BlackElo "2380"]
[PlyCount "26"]
[EventDate "1993.09.04"]
[EventType "team-swiss"]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Jaraguaense CX"]
[BlackTeam "Pinheiros EC"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 e5 2. f4 Qh4+ 3. g3 Qe7 4. fxe5 d6 5. Nc3 dxe5 6. Nf3 Bg4 7. h3 Bh5 8. Bc4 Nc6 9. Bb5 Nf6 10. d3 Qd6 11. Be3 Nd7 12. 0-0 a6 13. Ba4 Be7 0-1

[Event "BRA-chT Inter-Clubes 12th"]
[Site "Curitiba"]
[Date "1993.09.??"]
[Round "6"]
[White "Cavalcanti, Heron"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "B45"]
[BlackElo "2380"]
[PlyCount "34"]
[EventDate "1993.09.04"]
[EventType "team-swiss"]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Liga Uberabense X"]
[BlackTeam "Pinheiros EC"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 Qa5 7. Bxf6 gxf6 8. Nxc6 bxc6 9. a3 Rb8 10. b4 Qe5 11. Qd3 f5 12. f3 Bg7 13. Kd2 Bh6+ 14. Kd1 Ba6 15. b5 Bxb5 16. Nxb5 Qxa1+ 17. Ke2 Rxb5 0-1

[Event "BRA-chT Inter-Clubes 12th"]
[Site "Curitiba"]
[Date "1993.09.??"]
[Round "1"]
[White "Ganhoto, Marco Alves"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "B82"]
[BlackElo "2380"]
[PlyCount "64"]
[EventDate "1993.09.04"]
[EventType "team-swiss"]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Glasurit ADC"]
[BlackTeam "Pinheiros EC"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4 a6 7. Qf3 Qc7 8. Be3 b5 9. 0-0-0 Bb7 10. Bd3 Nbd7 11. a3 Nc5 12. Rhe1 Be7 13. g4 Rc8 14. g5 Nfd7 15. Kb1 0-0 16. h4 d5 17. e5 Nxd3 18. Rxd3 b4 19. axb4 Bxb4 20. Bd2 Nc5 21. Rde3 Ne4 22. Nxe4 dxe4 23. Qf2 Bc5 24. Rc3 Bd5 25. Be3 Qb7 26. Nb3 Bb4 27. Rxc8 Rxc8 28. Nd2 Bc3 29. b3 Qb4 30. Kc1 Bxb3 31. Nxb3 Bxe1 32. Bc5 Qxb3 0-1

[Event "BRA-chT Inter-Clubes 12th"]
[Site "Curitiba"]
[Date "1993.09.??"]
[Round "2"]
[White "Watanabe, Roberto Tadashi"]
[Black "Chemin, Vitorio"]
[Result "1-0"]
[ECO "B69"]
[WhiteElo "2380"]
[BlackElo "2245"]
[PlyCount "107"]
[EventDate "1993.09.04"]
[EventType "team-swiss"]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Pinheiros EC"]
[BlackTeam "Curitiba"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 Be7 10. Nf3 b5 11. Bxf6 gxf6 12. Bd3 Qb6 13. Rhe1 0-0-0 14. Kb1 Kb7 15. f5 h5 16. Ne2 Ne5 17. Nf4 Bf8 18. Qe2 h4 19. fxe6 fxe6 20. Nxe5 fxe5 21. Ng6 Rg8 22. Nxh4 Be8 23. g4 Rd7 24. Rf1 Rh7 25. Nf3 Be7 26. c4 Rxg4 27. cxb5 Rf4 28. bxa6+ Ka7 29. Rc1 Bh5 30. Qg2 Rhf7 31. Nd2 Rf2 32. Rxf2 Rxf2 33. Rc7+ Qxc7 34. Qxf2+ Qb6 35. Qxb6+ Kxb6 36. Kc2 d5 37. Kc3 Bc5 38. b4 Bd4+ 39. Kc2 Bg4 40. a4 Bg1 41. a5+ Kc7 42. b5 Bh3 43. b6+ Bxb6 44. axb6+ Kxb6 45. Kc3 Bg4 46. h4 Bh5 47. Kb4 Bg6 48. Nb3 dxe4 49. Be2 e3 50. Nc5 e4 51. Nd7+ Kc7 52. Kc5 Be8 53. Ne5 Kb8 54. Kb6 1-0

[Event "BRA-chT Inter-Clubes 12th"]
[Site "Curitiba"]
[Date "1993.09.??"]
[Round "3"]
[White "Watanabe, Roberto Tadashi"]
[Black "Disconzi da Silva, Rodrigo"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2380"]
[BlackElo "2340"]
[PlyCount "28"]
[EventDate "1993.09.04"]
[EventType "team-swiss"]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Pinheiros EC"]
[BlackTeam "Joinville"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. cxd5 exd5 5. Nf3 Bf5 6. Bf4 Qb6 7. Qc1 Nf6 8. e3 Be7 9. Be2 0-0 10. Ne5 Nbd7 11. g4 Be6 12. Qc2 Nxe5 13. Bxe5 Ne4 14. Bd3 Qa5 1/2-1/2

[Event "BRA-chT Inter-Clubes 12th"]
[Site "Curitiba"]
[Date "1993.09.??"]
[Round "4"]
[White "Watanabe, Roberto Tadashi"]
[Black "Souza, Adwilhans Luciano"]
[Result "0-1"]
[ECO "C63"]
[WhiteElo "2380"]
[PlyCount "108"]
[EventDate "1993.09.04"]
[EventType "team-swiss"]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Pinheiros EC"]
[BlackTeam "Erbo Stenzel CX"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Bxc6 dxc6 5. Nc3 Nf6 6. Qe2 Bd6 7. d4 exd4 8. exf5+ Qe7 9. Qxe7+ Kxe7 10. Nxd4 Re8 11. 0-0 Kf7 12. Bg5 Be5 13. Rad1 Bxd4 14. Rxd4 Bxf5 15. Rd2 Rad8 16. Rxd8 Rxd8 17. Rc1 Rd7 18. Kf1 h6 19. Bxf6 Kxf6 20. Ke1 Ke6 21. Nd1 Ke5 22. Ne3 Be6 23. a3 c5 24. Rd1 Rd6 25. Ke2 b5 26. Re1 Kf6 27. f4 c4 28. c3 c5 29. Rd1 Rxd1 30. Kxd1 Bd7 31. Ke2 Bc6 32. Kf2 g5 33. Kg3 Kg6 34. h4 Bd7 35. hxg5 hxg5 36. Kf3 Bc6+ 37. Kg4 Bd7+ 38. f5+ Kf6 39. Nd5+ Ke5 40. Kxg5 Bxf5 41. Ne7 Bd7 42. g4 Bxg4 43. Kxg4 Ke4 44. Nc6 a6 45. Nb8 a5 46. Na6 Kd3 47. Nc7 b4 48. Nb5 Kc2 49. axb4 cxb4 50. cxb4 axb4 51. Nd6 Kd3 52. Nb5 Ke4 53. Kg3 Kd5 54. Kf3 Kc5 0-1

[Event "BRA-chT Inter-Clubes"]
[Site "Caioba"]
[Date "1992.09.??"]
[Round "1"]
[White "Braitt, Milton dos Santos"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "A08"]
[BlackElo "2385"]
[PlyCount "68"]
[EventDate "1992.09.04"]
[EventType "team-swiss"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Jaraguaense CX"]
[BlackTeam "Sao Caetano do Sul CX"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Bd6 6. Bg2 Nge7 7. Qe2 0-0 8. 0-0 Bc7 9. Re1 Rb8 10. Nf1 b5 11. h4 f6 12. h5 e5 13. Nh4 Be6 14. Ne3 Qd7 15. exd5 Nxd5 16. c3 Nde7 17. g4 g6 18. hxg6 hxg6 19. Be4 Kf7 20. Nef5 gxf5 21. gxf5 Rg8+ 22. Kf1 Rh8 23. fxe6+ Qxe6 24. Qf3 Rxh4 25. Ke2 Qg4 26. Qxg4 Rxg4 27. Rh1 Rgg8 28. Rh6 Rh8 29. Rxh8 Rxh8 30. Bxc6 Nxc6 31. Be3 Bd6 32. a4 bxa4 33. Rxa4 Ke6 34. Rc4 Kd5 0-1

[Event "BRA-chT Inter-Clubes"]
[Site "Caioba"]
[Date "1992.09.??"]
[Round "3"]
[White "Paulucci, Ricardo Augusto"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "E99"]
[BlackElo "2385"]
[PlyCount "76"]
[EventDate "1992.09.04"]
[EventType "team-swiss"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Glasurit ADC"]
[BlackTeam "Sao Caetano do Sul CX"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5 11. f3 Nf6 12. Be3 f4 13. Bf2 g5 14. c5 Ng6 15. Rc1 Rf7 16. Rc2 Bf8 17. Qd2 g4 18. cxd6 cxd6 19. Rfc1 Rg7 20. Kf1 Bd7 21. Ne1 h5 22. Qd3 g3 23. hxg3 fxg3 24. Bxg3 h4 25. Bh2 Nh5 26. Qe3 Ng3+ 27. Bxg3 hxg3 28. Bb5 Qh4 29. Bxd7 Rxd7 30. Qg1 Bh6 31. Rd1 Rf8 32. Ne2 Bg5 33. Rd3 Rh7 34. Rdc3 Qh1 35. Nxg3 Qxg1+ 36. Kxg1 Bh4 37. Kf2 Nf4 38. Rc8 Rg7 0-1

[Event "BRA-chT Inter-Clubes"]
[Site "Caioba"]
[Date "1992.09.??"]
[Round "2"]
[White "Watanabe, Roberto Tadashi"]
[Black "Correa, Aron Antunes"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2385"]
[BlackElo "2335"]
[PlyCount "106"]
[EventDate "1992.09.04"]
[EventType "team-swiss"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Sao Caetano do Sul CX"]
[BlackTeam "Pinheiros EC"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bc4 Ke8 7. Be3 Nbd7 8. Ne2 Bc5 9. Kf2 Ke7 10. Rd1 c6 11. a4 Bxe3+ 12. Kxe3 Nb6 13. Bb3 a5 14. Na3 Be6 15. Bxe6 Kxe6 16. b3 Rhd8 17. Rxd8 Rxd8 18. Rf1 Ne8 19. Nc1 f6 20. Nd3 Ke7 21. c4 Nd7 22. c5 Nc7 23. Nc4 Ne6 24. Nxa5 Ndxc5 25. Nxc5 Nxc5 26. b4 Nxa4 27. Nxb7 Rd4 28. Na5 Kd7 29. Rc1 Rxb4 30. Rxc6 Rb2 31. g3 Rxh2 32. Ra6 Rc2 33. Ra8 Rc3+ 34. Kf2 Rc8 35. Ra7+ Rc7 36. Ra8 Nc3 37. Nb3 Nb5 38. Rb8 Rc2+ 39. Ke1 Nd6 40. Ra8 Rc3 41. Ra7+ Ke8 42. Nd2 Kf8 43. Ke2 Nb5 44. Ra2 h5 45. Kf2 g5 46. Nf1 Nd4 47. Ne3 Rb3 48. Nd5 Rxf3+ 49. Kg2 h4 50. gxh4 gxh4 51. Ra7 h3+ 52. Kh2 Ne6 53. Ne7 Ng5 0-1

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Ciemniak, Robert"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "C91"]
[WhiteElo "2415"]
[BlackElo "2380"]
[PlyCount "91"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. d4 Bg4 10. d5 Na5 11. Bc2 c6 12. h3 Bxf3 13. Qxf3 cxd5 14. exd5 Rc8 15. Nd2 g6 16. b4 Nc4 17. Nxc4 Rxc4 18. a4 Qb8 19. axb5 axb5 20. Bd2 Rc7 21. Bd3 Qb7 22. Ra5 Qxd5 23. Qe2 e4 24. Bxb5 Qe5 25. c4 d5 26. c5 Nh5 27. Qe3 Rd8 28. Ra6 f5 29. Qb3 Kh8 30. Rea1 f4 31. Ra8 Rcc8 32. R8a7 Bf6 33. R1a6 Rf8 34. Rd6 e3 35. Be1 d4 36. Rd5 Qb8 37. Rdd7 Ng7 38. Bd3 Rxc5 39. Qb1 Rg5 40. h4 Rh5 41. f3 Qe8 42. Qc2 g5 43. hxg5 Rxg5 44. Bh4 Qh5 45. Bxg5 Qxg5 46. Qc5 1-0

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "De la Riva Aguado, Oscar"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2400"]
[BlackElo "2380"]
[PlyCount "32"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 0-0 7. Re1 c6 8. a4 Qc7 9. h3 b6 10. b3 Bb7 11. Ba3 a6 12. d5 c5 13. Bc1 Qd8 14. Nh4 Nxe4 15. Nxe4 Bxh4 16. Nxd6 Bxf2+ 0-1

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Gokhale, Jayant Suresh"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2330"]
[BlackElo "2380"]
[PlyCount "39"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. d5 a5 8. Bg5 h6 9. Bh4 Na6 10. Nd2 Qe8 11. a3 Bd7 12. b3 Nh7 13. 0-0 f5 14. f3 Nf6 15. Bf2 h5 16. Rb1 Nc5 17. Qc2 fxe4 18. Ndxe4 Ncxe4 19. Nxe4 Nxe4 20. fxe4 1/2-1/2

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Hsu, Li Yang"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "E21"]
[WhiteElo "2455"]
[BlackElo "2380"]
[PlyCount "124"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. g3 Bb7 6. Bg2 0-0 7. Qc2 c5 8. 0-0 cxd4 9. Nxd4 Bxg2 10. Kxg2 Qc8 11. Qd3 Nc6 12. Qe3 Na5 13. b3 d5 14. Nc2 Bxc3 15. Qxc3 dxc4 16. b4 Nd5 17. Qf3 Nc6 18. b5 Ne5 19. Qe4 Ng6 20. a4 f5 21. Qf3 Ne5 22. Qa3 c3 23. Ne3 Nc4 24. Nxd5 Qb7 25. Qxc3 Qxd5+ 26. Qf3 Rfd8 27. Bg5 Qxf3+ 28. Kxf3 Rd4 29. Rfd1 Rxd1 30. Rxd1 h6 31. Bf4 e5 32. Bc1 Rf8 33. h4 a6 34. e4 axb5 35. axb5 fxe4+ 36. Kxe4 Rxf2 37. Kd5 Rc2 38. g4 Kf7 39. h5 Ke7 40. Rf1 e4 41. Kxe4 Nd6+ 42. Kf4 Nxb5 43. g5 hxg5+ 44. Kxg5 Rg2+ 45. Kf4 Nd4 46. Be3 Ne6+ 47. Ke4 Rb2 48. h6 gxh6 49. Bxh6 Kd6 50. Be3 Nc5+ 51. Kf3 Kd5 52. Rh1 Rc2 53. Rh5+ Kc4 54. Rh4+ Kb3 55. Rh5 Kb4 56. Rh4+ Ka3 57. Rh5 Kb3 58. Bg1 Rc4 59. Ke2 Kb4 60. Kd1 Kb5 61. Bf2 Kc6 62. Rh6+ Kb5 1/2-1/2

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Rodriguez Vila, Andres"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "C19"]
[WhiteElo "2350"]
[BlackElo "2380"]
[PlyCount "144"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Nf3 Ne7 8. a4 Nbc6 9. Bb5 Bd7 10. 0-0 Na5 11. Qe2 a6 12. Bxd7+ Qxd7 13. dxc5 0-0 14. Nd4 Rac8 15. f4 Nc4 16. g4 Nc6 17. Be3 f6 18. exf6 Rxf6 19. Rae1 Re8 20. g5 Rff8 21. Qg4 Nxd4 22. Bxd4 Nd2 23. Rf2 Ne4 24. Rf3 Qxa4 25. Rh3 e5 26. fxe5 Nf2 27. Qh4 Nxh3+ 28. Qxh3 Qxc2 29. Qd7 Qd2 30. Rb1 Qxg5+ 31. Kh1 Re7 32. Qxd5+ Kh8 33. Qe4 h6 34. c6 bxc6 35. Qxc6 Qf5 36. Ra1 Re6 37. Qg2 Qf3 38. Bc5 Qxc3 39. Rg1 Rf7 40. Bd6 a5 41. Qd5 Qf3+ 42. Qxf3 Rxf3 43. Rg4 Rf7 44. Ra4 Rg6 45. h4 Ra7 46. Re4 Ra6 47. Rd4 a4 48. h5 Re6 49. Rd2 Ra5 50. Ra2 Rexe5 51. Bxe5 Rxe5 52. Rxa4 Rxh5+ 53. Kg2 Rf5 54. Ra6 Kh7 55. Rb6 Rf6 56. Rb4 g5 57. Ra4 Kg6 58. Rb4 Kh5 59. Kg3 Ra6 60. Rb3 Kg6 61. Rc3 h5 62. Rb3 h4+ 63. Kh3 Kh5 64. Rb4 g4+ 65. Kg2 Ra2+ 66. Kg1 g3 67. Kh1 Rf2 68. Rb8 Kg4 69. Rb4+ Rf4 70. Rb8 Ra4 71. Rb1 h3 72. Rc1 h2 0-1

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Tratar, Marko"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "D07"]
[WhiteElo "2290"]
[BlackElo "2380"]
[PlyCount "62"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. d5 Ne5 5. Bf4 Ng6 6. Bg3 e5 7. e4 h5 8. h4 Bd6 9. Bxc4 a6 10. Be2 Nf6 11. Nf3 Bd7 12. Nd2 Nf4 13. Nc4 Qe7 14. Bxf4 exf4 15. Nxd6+ Qxd6 16. Qd2 0-0 17. 0-0-0 b5 18. Qd4 Rfe8 19. Bf3 b4 20. Ne2 Bb5 21. Rhe1 Rad8 22. Kb1 a5 23. e5 Rxe5 24. Nxf4 Rde8 25. Rxe5 Rxe5 26. b3 a4 27. bxa4 Bxa4 28. Rc1 Bd7 29. Qc5 Bf5+ 30. Ka1 Re1 31. Kb2 Qxc5 0-1

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Watanabe, Roberto Tadashi"]
[Black "Ahn, Martin"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2380"]
[BlackElo "2245"]
[PlyCount "40"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 c5 4. dxc5 Qa5+ 5. Nc3 Qxc5 6. e4 Bg7 7. a3 0-0 8. Na4 Qc7 9. Be3 Nc6 10. Rc1 d6 11. Ne2 Rd8 12. Nf4 e6 13. Nc3 Ne5 14. b3 b6 15. Be2 Bb7 16. 0-0 Rd7 17. Qd2 Rad8 18. Nb5 Qb8 19. Nd4 Rc8 20. Nd3 Qa8 1/2-1/2

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Watanabe, Roberto Tadashi"]
[Black "Danielian, Oganes"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "2380"]
[BlackElo "2460"]
[PlyCount "80"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Bd3 Bg4 6. 0-0 Ne7 7. c4 dxc4 8. Bxc4 0-0 9. h3 Bh5 10. Nc3 Nbc6 11. Bg5 h6 12. Be3 Qd7 13. d5 Bxf3 14. Qxf3 Ne5 15. Qe2 a6 16. Bb3 Nf5 17. Bc2 Rae8 18. Rad1 b5 19. Ne4 Nxe3 20. Qxe3 f5 21. Nc5 Bxc5 22. Qxc5 Qd6 23. Qxd6 cxd6 24. a4 b4 25. a5 Rb8 26. Bb3 f4 27. Rfe1 f3 28. Re4 fxg2 29. Kxg2 Nd7 30. Re7 Nc5 31. Bc4 b3 32. Bf1 Rb4 33. Rc7 Rbf4 34. Rd2 Ne4 35. Re2 Rxf2+ 36. Rxf2 Rxf2+ 37. Kg1 Rxb2 38. Bxa6 Rc2 39. Rb7 Nc5 40. Rb8+ Kf7 0-1

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Watanabe, Roberto Tadashi"]
[Black "Fish, Gennadij"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "2380"]
[BlackElo "2440"]
[PlyCount "86"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. g3 Nc6 3. Bg2 g6 4. Ne2 Bg7 5. 0-0 e6 6. c3 Nge7 7. d4 cxd4 8. cxd4 d5 9. e5 0-0 10. Nbc3 Nf5 11. Bh3 f6 12. Bxf5 exf5 13. exf6 Bxf6 14. Bh6 Re8 15. Qd2 Be6 16. h4 Qd7 17. Kg2 Bf7 18. Bg5 Bg7 19. Bh6 Bh8 20. h5 Nd8 21. hxg6 hxg6 22. Rh1 Ne6 23. Be3 Bf6 24. Nf4 Nxf4+ 25. Bxf4 b5 26. Bg5 Bg7 27. a3 a5 28. a4 bxa4 29. Qf4 Rac8 30. Qh4 Rc6 31. Nxa4 Ree6 32. Rae1 Rxe1 33. Rxe1 Rc2 34. b3 Qb5 35. Bf6 Qxb3 36. Rh1 Rxf2+ 37. Kxf2 Qc2+ 38. Kf3 Qd3+ 39. Kf2 Qd2+ 40. Kf3 Qd3+ 41. Kg2 Qe2+ 42. Kh3 Bxf6 43. Qxf6 Qg4+ 1/2-1/2

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Watanabe, Roberto Tadashi"]
[Black "Jepson, Christian"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2380"]
[BlackElo "2295"]
[PlyCount "99"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bb4 5. d3 d6 6. g3 0-0 7. Bg2 a6 8. 0-0 Bd7 9. Nd5 Nxd5 10. cxd5 Ne7 11. a3 Ba5 12. b4 Bb6 13. d4 Ng6 14. dxe5 Nxe5 15. Nxe5 dxe5 16. Bb2 Qe7 17. a4 f5 18. Qc2 a5 19. bxa5 Rxa5 20. Ba3 Bc5 21. Bxc5 Rxc5 22. Qb2 b6 23. Rac1 Bxa4 24. d6 Qf7 25. Rxc5 bxc5 26. dxc7 Rc8 27. Qxe5 Qxc7 28. Qxf5 Re8 29. Qd5+ Kf8 30. Rc1 Re5 31. Qc4 Qd7 32. f4 Bb5 33. Qc3 Rh5 34. Bf3 Rh6 35. Qxc5+ Ke8 36. e5 Ra6 37. Rd1 Qa7 38. Qxa7 Rxa7 39. Rd2 Ra3 40. Kf2 Ra1 41. Ke3 Ra3+ 42. Kf2 Ke7 43. Be4 h6 44. Bd5 Bd7 45. Ra2 Rd3 46. Be4 Rb3 47. Ra7 Rb2+ 48. Ke3 Ke8 49. Bg6+ Kd8 50. f5 1-0

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Watanabe, Roberto Tadashi"]
[Black "Littke, Adam"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2380"]
[BlackElo "2270"]
[PlyCount "61"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d4 cxd4 6. cxd4 g6 7. Nc3 Bg7 8. h3 0-0 9. 0-0 d5 10. e5 Ne4 11. Bd3 Nxc3 12. bxc3 f6 13. exf6 Rxf6 14. Bg5 Rf7 15. Bh4 Bf6 16. Bg3 Be6 17. Qd2 Qc8 18. Ng5 Bxg5 19. Qxg5 Bf5 20. Bb5 a6 21. Bxc6 Qxc6 22. Be5 Raf8 23. f3 e6 24. Qd2 Qb5 25. Rad1 a5 26. Rfe1 Qa4 27. Re2 g5 28. Qxg5+ Bg6 29. Rde1 Qc4 30. Bd6 Re8 31. Rxe6 1-0

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Watanabe, Roberto Tadashi"]
[Black "Relange, Eloi"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2380"]
[BlackElo "2365"]
[PlyCount "64"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. Bc4 c6 6. Nf3 Bf5 7. Ne5 e6 8. g4 Bg6 9. h4 Nbd7 10. Qe2 Bb4 11. Rh3 Qc7 12. h5 Be4 13. g5 Bf5 14. gxf6 Bxh3 15. fxg7 Rg8 16. h6 Nxe5 17. dxe5 Bf5 18. Bg5 Be7 19. Bxe7 Qxe7 20. Ne4 Bxe4 21. Qxe4 0-0-0 22. Qe3 Qh4 23. Bd3 Qh1+ 24. Bf1 Kb8 25. a4 c5 26. Ra3 Rd4 27. f3 Qh4+ 28. Ke2 Qh2+ 29. Ke1 Qh4+ 30. Ke2 c4 31. Bg2 Rgd8 32. Ra1 Rd2+ 0-1

[Event "Wch U20"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "?"]
[White "Watanabe, Roberto Tadashi"]
[Black "Scarella, Enrique Alejandro"]
[Result "0-1"]
[ECO "D24"]
[WhiteElo "2380"]
[BlackElo "2410"]
[PlyCount "64"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 c5 4. d5 e6 5. Nc3 exd5 6. exd5 Bd6 7. Bxc4 Nf6 8. Nf3 0-0 9. 0-0 a6 10. Bg5 Re8 11. Re1 Rxe1+ 12. Qxe1 Bf5 13. Nh4 Bg6 14. Bxf6 gxf6 15. Qe3 Nd7 16. a4 Ne5 17. Be2 f5 18. g3 Qb6 19. f4 Nd7 20. Bf1 Nf6 21. Bh3 Qxb2 22. Qc1 Qb4 23. Nxf5 Bxf5 24. Bxf5 Qd4+ 25. Kh1 Nxd5 26. Ne4 Be7 27. Qd1 Ne3 28. Qxd4 cxd4 29. Bh3 d3 30. f5 Bb4 31. Nf2 d2 32. Nd1 Rc8 0-1

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.10.??"]
[Round "14"]
[White "Watanabe, Roberto Tadashi"]
[Black "Sequera Paolini, Jose Rafael"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2325"]
[PlyCount "21"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bd3 Bd6 6. 0-0 0-0 7. Bg5 h6 8. Bh4 c6 9. c3 Bg4 10. Nbd2 Nbd7 11. Re1 1/2-1/2

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.11"]
[Round "9"]
[White "Watanabe, Roberto Tadashi"]
[Black "Sanchez Almeyra, Jorge"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2325"]
[BlackElo "2430"]
[PlyCount "131"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Brazil"]
[BlackTeam "Argentina"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "ARG"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4 a6 7. Be3 b5 8. Qf3 Bb7 9. Bd3 Nbd7 10. 0-0 Be7 11. a3 0-0 12. g4 g6 13. Nde2 Nc5 14. b4 Nxd3 15. cxd3 Nd7 16. Qh3 Bf6 17. g5 Bg7 18. f5 exf5 19. exf5 gxf5 20. Rxf5 Rc8 21. Rc1 Qe7 22. Nd5 Rxc1+ 23. Nxc1 Bxd5 24. Rxd5 Re8 25. Bf2 Ne5 26. Qf5 Qb7 27. Rxd6 Nf3+ 28. Kh1 Nxg5+ 29. Qd5 Qe7 30. Rxa6 Nh3 31. Bg3 Qe3 32. Kg2 Qg1+ 33. Kxh3 Qf1+ 34. Kg4 Qxc1 35. Ra8 Qd1+ 36. Kh3 Qf1+ 37. Kg4 Qd1+ 38. Kh3 Qf1+ 39. Kg4 h5+ 40. Kg5 Qf6+ 41. Kxh5 Qg6+ 42. Kh4 Qh6+ 43. Kg4 Qg6+ 44. Kh3 Qh6+ 45. Kg2 Qd2+ 46. Bf2 Qe2 47. Rxe8+ Qxe8 48. Kf3 Qb8 49. h4 Qh2 50. Qf5 Qh1+ 51. Ke2 Qc6 52. Qe4 Qc2+ 53. Kf3 Qd1+ 54. Kg2 Bb2 55. Qe8+ Kg7 56. Qxb5 Qg4+ 57. Kh2 Bxa3 58. Qe5+ f6 59. Qc7+ Kg6 60. b5 Bb2 61. h5+ Qxh5+ 62. Kg2 Qd5+ 63. Kg1 Qxb5 64. Qg3+ Qg5 65. Qxg5+ fxg5 66. Kg2 1/2-1/2

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.09"]
[Round "8"]
[White "Hakulinen, Esko Matti"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "E97"]
[WhiteElo "2330"]
[BlackElo "2325"]
[PlyCount "42"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Finland"]
[BlackTeam "Brazil"]
[WhiteTeamCountry "FIN"]
[BlackTeamCountry "BRA"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 0-0 6. Be2 e5 7. 0-0 Nc6 8. Be3 Re8 9. dxe5 dxe5 10. h3 Be6 11. c5 Nh5 12. Nd5 Nd4 13. Nxd4 exd4 14. Bxd4 Bxd4 15. Qxd4 Bxd5 16. Bxh5 Rxe4 17. Qc3 gxh5 18. Rad1 Re6 19. f4 c6 20. f5 Re2 21. Rf3 Qg5 0-1

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.08"]
[Round "7"]
[White "Costa, Jean Luc"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2410"]
[BlackElo "2325"]
[PlyCount "61"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Brazil"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "BRA"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Nf3 e5 7. d5 Na6 8. Bg5 h6 9. Be3 Nh5 10. Qd2 Kh7 11. 0-0-0 f5 12. exf5 gxf5 13. g4 Nf4 14. Bxf4 exf4 15. Bd3 Nc5 16. Bc2 Kg8 17. Rhg1 b5 18. gxf5 bxc4 19. Rg6 Bxf5 20. Bxf5 Rxf5 21. Qd4 Rf6 22. Rdg1 Rxg6 23. Rxg6 Qf8 24. Qxc4 Qf5 25. Rg1 Rb8 26. Nd4 Qh7 27. Ne6 Nd3+ 28. Kb1 Nxb2+ 29. Qe4 Na4+ 30. Kc2 Rb2+ 31. Kc1 1-0

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.06"]
[Round "6"]
[White "Watanabe, Roberto Tadashi"]
[Black "Kharlov, Andrei"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2325"]
[BlackElo "2515"]
[PlyCount "84"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Brazil"]
[BlackTeam "Soviet Union"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "URS"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. a4 Bb4 6. e3 b5 7. Bd2 a5 8. axb5 Bxc3 9. Bxc3 cxb5 10. b3 Bb7 11. bxc4 b4 12. Bb2 Nf6 13. Bd3 Nbd7 14. 0-0 0-0 15. Qc2 Qc7 16. e4 e5 17. d5 Rfe8 18. c5 Qxc5 19. Qxc5 Nxc5 20. Bb5 Rec8 21. Bxe5 Ncxe4 22. d6 Bc6 23. Bxc6 Rxc6 24. Rfd1 Nd7 25. Rd4 f6 26. Bf4 Nc3 27. Rxb4 Ne2+ 28. Kf1 Nxf4 29. Rxf4 Rxd6 30. Nd4 Nc5 31. Nf5 Rd2 32. Rc4 Nd3 33. f3 Ne5 34. Rc7 Rd7 35. Rxd7 Nxd7 36. Rd1 Nf8 37. Nd6 Rd8 38. Ke2 Ne6 39. g3 a4 40. Ke3 a3 41. Ke4 Nc5+ 42. Kd5 Nb7 0-1

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.05"]
[Round "5"]
[White "Watanabe, Roberto Tadashi"]
[Black "Rodriguez Vila, Andres"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2325"]
[BlackElo "2350"]
[PlyCount "82"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Brazil"]
[BlackTeam "Uruguay"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "URU"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 f6 7. 0-0 fxe5 8. dxe5 Qc7 9. c4 Nge7 10. Nc3 Nxe5 11. cxd5 exd5 12. Nxd5 Nxd5 13. Qxd5 Ng6 14. Ng5 0-0-0 15. Nf7 Re8 16. Nxh8 Bd6 17. Qh5 Nxh8 18. Bg4 g6 19. Bxd7+ Qxd7 20. Qh4 Re5 21. Qc4 Qe8 22. Qg4+ Rf5 23. Be3 Qe5 24. g3 Nf7 25. b4 Qe8 26. Kg2 Qe6 27. Qe2 Ng5 28. f3 Re5 29. Rae1 c4 30. a3 Bc7 31. Qf2 Nh3 32. Qd2 Rd5 33. Qc2 Re5 34. Qc3 Rh5 35. Qh8+ Kd7 36. Qg7+ Kc6 37. b5+ Rxb5 38. Bb6 Be5 39. Qc7+ Bxc7 40. Rxe6+ Kd7 41. Bxc7 Ng5 1-0

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.04"]
[Round "4"]
[White "Watanabe, Roberto Tadashi"]
[Black "David, Alberto"]
[Result "1/2-1/2"]
[ECO "C68"]
[WhiteElo "2325"]
[BlackElo "2315"]
[PlyCount "92"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Brazil"]
[BlackTeam "Luxembourg"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "LUX"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 h5 7. d3 Qf6 8. Nbd2 Ne7 9. Re1 Ng6 10. d4 Bd6 11. hxg4 hxg4 12. Nh2 Rxh2 13. Qxg4 Qh4 14. Qxh4 Rxh4 15. Nf3 Rh5 16. dxe5 Nxe5 17. Nxe5 Bxe5 18. c3 0-0-0 19. Be3 Bh2+ 20. Kf1 Bd6 21. Rad1 Re8 22. f3 f5 23. Bg1 Rh1 24. Kf2 fxe4 25. fxe4 Rh4 26. g3 Rg4 27. Rd3 Rgxe4 28. Rxe4 Rxe4 29. Kf3 Re1 30. Bd4 g6 31. Re3 Rb1 32. c4 c5 33. Bg7 Kd7 34. Kg4 Rc1 35. b3 b5 36. Rc3 Rg1 37. Bh6 Rg2 38. a4 Be5 39. Rd3+ Kc6 40. axb5+ axb5 41. Re3 Bd6 42. Bg7 Rc2 43. Rc3 Re2 44. Kg5 Re4 45. Bf6 Kb6 46. Kxg6 Rg4+ 1/2-1/2

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.03"]
[Round "3"]
[White "Watanabe, Roberto Tadashi"]
[Black "Matsuura, Everaldo"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2325"]
[BlackElo "2330"]
[PlyCount "37"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Brazil"]
[BlackTeam "Brazil II"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. a3 Bxc3+ 6. bxc3 b6 7. Qg4 f5 8. Qg3 Ba6 9. Bxa6 Nxa6 10. Ne2 Nb8 11. Nf4 Nc6 12. Nxe6 Qxe6 13. Qxg7 Nd8 14. Qxh8 Qg6 15. e6 Nc6 16. Bf4 Kf8 17. 0-0 Re8 18. Rae1 Re7 19. Re3 1-0

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.02"]
[Round "2"]
[White "Watanabe, Roberto Tadashi"]
[Black "Edelman, Daniel"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2325"]
[BlackElo "2420"]
[PlyCount "54"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Brazil"]
[BlackTeam "United States"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "USA"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 d6 6. 0-0 Nc6 7. d3 Nh5 8. Rb1 f5 9. Bd2 a5 10. a3 f4 11. Nd5 e5 12. b4 axb4 13. axb4 Ne7 14. Qc2 Bg4 15. b5 Qd7 16. Bb4 Nf5 17. c5 Bxf3 18. Bxf3 Nd4 19. Qc4 Kh8 20. cxd6 fxg3 21. fxg3 Qh3 22. dxc7 Nxg3 23. Bxf8 Ngxe2+ 24. Bxe2 Nxe2+ 25. Kh1 Ng3+ 26. Kg1 Ne2+ 27. Kh1 Ng3+ 1/2-1/2

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.01"]
[Round "1"]
[White "Peralta, Eduardo"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "E97"]
[WhiteElo "2215"]
[BlackElo "2325"]
[PlyCount "70"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Paraguay"]
[BlackTeam "Brazil"]
[WhiteTeamCountry "PAR"]
[BlackTeamCountry "BRA"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Nd2 a5 10. Rb1 Nd7 11. a3 f5 12. b4 axb4 13. axb4 Kh8 14. f3 Ng8 15. Nb3 Ndf6 16. c5 Nh5 17. g3 Nhf6 18. Bd2 fxe4 19. fxe4 Bh3 20. Rf2 Nh6 21. Bg5 Nhg8 22. Bg4 Nxg4 23. Bxd8 Nxf2 24. Qd2 Raxd8 25. Na5 Ng4 26. Nc4 Rf3 27. Nb5 Rdf8 28. Qe2 Rf2 29. Qxf2 Rxf2 30. Ne3 Rf6 31. Nxg4 Bxg4 32. Nxc7 Bh6 33. Rf1 Be3+ 34. Kg2 Rxf1 35. Kxf1 dxc5 0-1

[Event "Buenos Aires TB IV"]
[Site "Buenos Aires"]
[Date "1991.??.??"]
[Round "?"]
[White "Bertona, Fernando"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2275"]
[BlackElo "2275"]
[PlyCount "87"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 Be7 7. g5 Nfd7 8. h4 a6 9. Be3 Nc6 10. Bc4 Nde5 11. Be2 0-0 12. f4 Nxd4 13. Qxd4 Nc6 14. Qd2 b5 15. Bf3 b4 16. Na4 a5 17. Nb6 Rb8 18. Nxc8 Qxc8 19. 0-0 Rd8 20. Qg2 Bf8 21. Rad1 Ne7 22. Rd2 Qc4 23. b3 Qc3 24. Bd4 Qc7 25. Rfd1 Ng6 26. Qh2 e5 27. f5 Nf4 28. Be3 Qc3 29. Bxf4 Qxf3 30. Bxe5 Re8 31. Qf4 Qxf4 32. Bxf4 Rxe4 33. Bxd6 Rbe8 34. Bxf8 Kxf8 35. Rd4 Rxd4 36. Rxd4 Re1+ 37. Kf2 Ra1 38. Rc4 Rxa2 39. Ke3 Ke7 40. Rc7+ Kd6 41. Rxf7 Rxc2 42. Rxg7 Rc3+ 43. Kd4 Rxb3 44. Rxh7 1-0

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "2"]
[White "Braga, Cicero Nogueira"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "A20"]
[WhiteElo "2355"]
[BlackElo "2325"]
[PlyCount "91"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. Nf3 e4 5. Nd4 d5 6. cxd5 Qxd5 7. e3 Na6 8. Nc3 Qe5 9. 0-0 Bb4 10. Qc2 Nc5 11. Nce2 Ncd7 12. a3 Bc5 13. b4 Bxd4 14. exd4 Qh5 15. Nf4 Qb5 16. d3 exd3 17. Re1+ Kf8 18. Nxd3 Nb6 19. Bf4 Be6 20. Nc5 Qc4 21. Qd2 Rd8 22. Rad1 Bg4 23. Nxb7 Bxd1 24. Nxd8 Ba4 25. Nb7 h6 26. Nc5 Qc2 27. Qxc2 Bxc2 28. Bxc6 Kg8 29. Be5 Nfd5 30. Bxd5 Nxd5 31. Rc1 Bf5 32. Nb3 Kh7 33. f3 Re8 34. Kf2 f6 35. Bd6 Re3 36. Nc5 Rxa3 37. g4 Bg6 38. Ne6 Ra2+ 39. Kg3 Bc2 40. h4 Nc3 41. Re1 h5 42. Nf8+ Kg8 43. Nd7 hxg4 44. Kxg4 Nd5 45. Kg3 Ba4 46. Nc5 1/2-1/2

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "3"]
[White "Braga, Cicero Nogueira"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "A12"]
[WhiteElo "2355"]
[BlackElo "2325"]
[PlyCount "31"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 c6 2. Nf3 d5 3. b3 Nf6 4. g3 Bf5 5. Bb2 e6 6. Bg2 h6 7. 0-0 Be7 8. d3 0-0 9. Nbd2 Nbd7 10. Qc2 Bh7 11. Bc3 Re8 12. Qb2 Bd6 13. Ne5 Nxe5 14. Bxe5 Bxe5 15. Qxe5 Qe7 16. Rfc1 1/2-1/2

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "5"]
[White "Braga, Cicero Nogueira"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2355"]
[BlackElo "2325"]
[PlyCount "61"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. g3 e5 2. c4 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. d3 Nf6 6. e4 0-0 7. Nge2 d6 8. 0-0 a6 9. h3 Rb8 10. a4 a5 11. f4 exf4 12. Bxf4 h6 13. Qd2 Kh7 14. g4 Ne5 15. b3 Bd7 16. d4 Nc6 17. Rad1 Ng8 18. Nb5 Rc8 19. Bg3 Nb4 20. e5 Bxb5 21. axb5 d5 22. Nf4 Ne7 23. Ne2 c6 24. bxc6 bxc6 25. Bh4 Qd7 26. Bf6 Ng8 27. Bxg7 Kxg7 28. Nf4 Rcd8 29. cxd5 cxd5 30. Rc1 Rc8 31. Rfe1 1-0

[Event "Buenos Aires TB IV"]
[Site "Buenos Aires"]
[Date "1991.??.??"]
[Round "?"]
[White "Del Rey, Diego"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "E61"]
[WhiteElo "2225"]
[BlackElo "2275"]
[PlyCount "28"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. Bg5 d6 6. e3 c5 7. Be2 h6 8. Bh4 cxd4 9. Nxd4 Nc6 10. 0-0 Bd7 11. Qd2 a6 12. Rac1 Nxd4 13. exd4 b5 14. a3 bxc4 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "4"]
[White "Estrada Nieto, Julian"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "C05"]
[WhiteElo "2260"]
[BlackElo "2275"]
[PlyCount "106"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Ndf3 Qb6 8. h4 cxd4 9. cxd4 Bb4+ 10. Kf2 f6 11. Be3 fxe5 12. fxe5 0-0 13. a3 Be7 14. b4 Qd8 15. Bd3 Ndxe5 16. dxe5 Nxe5 17. Ke2 Ng4 18. Qc2 h6 19. Nh3 e5 20. Bh7+ Kh8 21. Nhg5 e4 22. Bd4 exf3+ 23. gxf3 Bf6 24. Bc5 Ne5 25. Bg8 g6 26. Bxf8 Bf5 27. Qd2 Qxf8 28. Bxd5 Kg7 29. Ne4 Nxf3 30. Kxf3 Bxa1 31. Rxa1 Bxe4+ 32. Kxe4 Qf5+ 33. Kd4 Qf6+ 34. Kc4 Rc8+ 35. Kb3 Qxa1 36. Bxb7 Rc7 37. Be4 Qe5 38. Qg2 Rc3+ 39. Ka2 Qe6+ 40. Bd5 Qf6 41. Be4 Qe6+ 42. Bd5 Qe3 43. Qb2 Qc1 44. b5 Qxb2+ 45. Kxb2 Rc5 46. Bc6 Kf6 47. Kb3 Ke5 48. Be8 g5 49. hxg5 hxg5 50. a4 g4 51. Bd7 g3 52. Bh3 Kd6 53. Bg2 Rf5 0-1

[Event "Buenos Aires TB IV"]
[Site "Buenos Aires"]
[Date "1991.??.??"]
[Round "?"]
[White "Filgueira, Hernan"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2290"]
[BlackElo "2275"]
[PlyCount "33"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "ARG"]
[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 0-0 5. f3 d6 6. Be3 e5 7. Nge2 c6 8. Qd2 exd4 9. Nxd4 Re8 10. Be2 d5 11. exd5 cxd5 12. 0-0 dxc4 13. Rad1 a6 14. Bxc4 b5 15. Bb3 Bb7 16. Qf2 Nbd7 17. Rfe1 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "15"]
[White "Hernandez, Gustavo"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "C08"]
[WhiteElo "2345"]
[BlackElo "2275"]
[PlyCount "12"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 5. exd5 exd5 6. dxc5 Bxc5 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "6"]
[White "Minero Pineda, Sergio"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2360"]
[BlackElo "2275"]
[PlyCount "97"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 g6 3. e4 d6 4. Be2 Bg7 5. h4 c5 6. dxc5 Qa5 7. Qd3 Qxc5 8. Be3 Qa5 9. h5 gxh5 10. Nh3 Nc6 11. 0-0-0 Bg4 12. Nf4 Rc8 13. a3 a6 14. f3 Be6 15. Ncd5 Ne5 16. Qb3 Nxd5 17. Nxe6 Nxe3 18. Nxg7+ Kf8 19. Qxe3 Kxg7 20. Qg5+ Kf8 21. Qh6+ Ke8 22. Rxh5 Qc5 23. c3 Qf2 24. Rd2 Qe1+ 25. Kc2 Ng6 26. Qg7 Qg3 27. e5 dxe5 28. Rxh7 Rf8 29. Bd3 Rd8 30. Rh6 Rd6 31. c4 Qf4 32. c5 Rd4 33. Rh1 Kd7 34. Rhd1 Rc8 35. b4 Kc7 36. Bxg6 Rxd2+ 37. Rxd2 Qc4+ 38. Kb2 fxg6 39. Qxe7+ Kb8 40. Qxe5+ Ka8 41. Qd4 Qf1 42. Qd7 Rc6 43. Qe8+ Ka7 44. Qe3 a5 45. Qe2 Qh1 46. Qe3 Qf1 47. Qd3 Qh1 48. Qd4 Qf1 49. Rc2 1-0

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "8"]
[White "Playa, Marcelo"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "C29"]
[WhiteElo "2295"]
[BlackElo "2275"]
[PlyCount "62"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Be7 6. g3 0-0 7. Bg2 c5 8. 0-0 Nc6 9. Qe2 f5 10. d3 Nxc3 11. bxc3 Be6 12. Rb1 b6 13. h4 Qd7 14. Bg5 h6 15. Bd2 Rab8 16. d4 c4 17. Ne1 b5 18. Qh5 b4 19. Qg6 Bf7 20. Qxf5 Qxf5 21. Rxf5 bxc3 22. Rxb8 cxd2 23. Rb1 dxe1Q+ 24. Rxe1 Nxd4 25. Rf2 Be6 26. Rxf8+ Kxf8 27. c3 Nb5 28. Rc1 Ba3 29. Rc2 Bf5 30. Rd2 Nxc3 31. Kh2 Ke7 0-1

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "2"]
[White "Resende, Antonio Carlos"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "A70"]
[WhiteElo "2330"]
[BlackElo "2325"]
[PlyCount "45"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bd3 Bg7 8. Nf3 0-0 9. h3 b5 10. Bxb5 Nxe4 11. Nxe4 Qa5+ 12. Nfd2 Qxb5 13. Nxd6 Qd3 14. N2c4 Qxd1+ 15. Kxd1 Ba6 16. Bg5 f6 17. Bf4 Rd8 18. Kc2 Bxc4 19. Nxc4 Rxd5 20. Bxb8 Rxb8 21. Rad1 Rbd8 22. Rxd5 Rxd5 23. Rd1 1/2-1/2

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "4"]
[White "Resende, Antonio Carlos"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "E66"]
[WhiteElo "2330"]
[BlackElo "2325"]
[PlyCount "38"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 g6 4. g3 Bg7 5. Bg2 0-0 6. d4 d6 7. 0-0 Nc6 8. d5 Na5 9. Nd2 a6 10. Qc2 Rb8 11. b3 b5 12. Rb1 e6 13. Bb2 b4 14. Nd1 exd5 15. cxd5 Bd7 16. e4 Bb5 17. Re1 Nd7 18. Bxg7 Kxg7 19. Ne3 Qf6 1/2-1/2

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "5"]
[White "Resende, Antonio Carlos"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "A07"]
[WhiteElo "2330"]
[BlackElo "2325"]
[PlyCount "43"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. 0-0 Bf5 5. d3 h6 6. Nbd2 e6 7. Qe1 Be7 8. e4 Bh7 9. b3 0-0 10. Bb2 a5 11. Rb1 Na6 12. e5 Nd7 13. a3 b5 14. Qe2 b4 15. a4 Qb6 16. Ne1 Nc7 17. Kh1 f6 18. exf6 Bxf6 19. Bxf6 Rxf6 20. f4 Qc5 21. Rc1 Raf8 22. Nef3 1/2-1/2

[Event "Buenos Aires TB IV"]
[Site "Buenos Aires"]
[Date "1991.??.??"]
[Round "?"]
[White "Ribas, Alejandro"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "B40"]
[BlackElo "2275"]
[PlyCount "66"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Nc6 6. Nxc6 bxc6 7. 0-0 d5 8. Nd2 Be7 9. Qe2 0-0 10. c4 a5 11. Re1 a4 12. cxd5 cxd5 13. e5 Nd7 14. Nf3 Nc5 15. Bc2 d4 16. Qc4 d3 17. Bd1 Ba6 18. Qg4 f5 19. exf6 Rxf6 20. Bg5 Rg6 21. Bxe7 Rxg4 22. Bxd8 Rxd8 23. Rc1 Rc4 24. Rxc4 Bxc4 25. Re5 Bd5 26. Nd2 Rb8 27. b3 axb3 28. axb3 Bxb3 29. Nxb3 Nxb3 30. Rxe6 Nc5 31. Re1 Rb1 32. f3 Na4 33. Kf2 Nc3 0-1

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "12"]
[White "Rojas Keim, Luis Alberto"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "B21"]
[BlackElo "2275"]
[PlyCount "66"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Bc4 e6 6. Nf3 a6 7. a4 Be7 8. 0-0 Nf6 9. Qe2 0-0 10. Rd1 Qc7 11. Bf4 Nc6 12. Rac1 Ne5 13. Ba2 Qb8 14. Nd4 Bd7 15. Bg3 g6 16. f4 Nc6 17. Nxc6 bxc6 18. f5 Nh5 19. fxe6 fxe6 20. Qg4 Qb6+ 21. Kh1 Nxg3+ 22. hxg3 Rf6 23. e5 Rf5 24. exd6 Bd8 25. Ne4 Rh5+ 26. Qxh5 gxh5 27. Nc5 Qxb2 28. Bc4 Bg5 29. Rb1 Qc3 30. Bxe6+ Bxe6 31. Nxe6 Qxg3 32. Rb4 Re8 33. Re4 Rxe6 0-1

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "10"]
[White "Salguero, Francisco"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "E99"]
[BlackElo "2275"]
[PlyCount "46"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 0-0 5. e4 d6 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. f3 f5 11. g4 Nf6 12. Nd3 Kh8 13. Bd2 h6 14. h4 c6 15. Kg2 b5 16. b3 Rb8 17. dxc6 bxc4 18. bxc4 Nxc6 19. Rh1 Nd4 20. g5 Nh5 21. gxh6 Bf6 22. Nd5 Bxh4 23. Be3 f4 0-1

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "2"]
[White "Silva Lillo, Sebastian"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "E99"]
[WhiteElo "2355"]
[BlackElo "2275"]
[PlyCount "108"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5 11. Bd2 Nf6 12. f3 f4 13. g4 c6 14. Be1 b5 15. Nb4 cxd5 16. Nbxd5 Nfxd5 17. Nxd5 Nc6 18. cxb5 Nd4 19. Rc1 Rb8 20. Bf2 Be6 21. Bc4 Rb7 22. a4 h5 23. h3 Bh8 24. Qd3 Rh7 25. Kg2 Rff7 26. Nb4 Bxc4 27. Qxc4 hxg4 28. hxg4 Nxf3 29. Kxf3 Rh3+ 30. Kg2 Qg5 31. Rg1 f3+ 32. Kf1 Rh2 33. Nd3 Bf6 34. a5 Qd2 35. Qc2 Qxa5 36. g5 Bd8 37. b4 Qxb5 38. Qc4 Qb7 39. Qc6 Qxc6 40. Rxc6 Bb6 41. Rxd6 Bxf2 42. Nxf2 Rc7 43. Ke1 Rc1+ 44. Rd1 Rc2 45. Rd8+ Kf7 46. Rf1 Re2+ 47. Kd1 Rexf2 48. Rxf2 Rxf2 49. Rd7+ Ke6 50. Rxa7 Rb2 51. Ra6+ Kd7 52. Ke1 Rxb4 53. Kf2 Rxe4 54. Kxf3 Rf4+ 1/2-1/2

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "1"]
[White "Watanabe, Roberto Tadashi"]
[Black "Braga, Cicero Nogueira"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2325"]
[BlackElo "2355"]
[PlyCount "24"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 0-0 5. Be2 d5 6. 0-0 b6 7. Nbd2 Bb7 8. c3 c5 9. h3 Nbd7 10. Ne5 Nxe5 11. Bxe5 Nd7 12. Bxg7 Kxg7 1/2-1/2

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "4"]
[White "Watanabe, Roberto Tadashi"]
[Black "Braga, Cicero Nogueira"]
[Result "1/2-1/2"]
[ECO "A65"]
[WhiteElo "2325"]
[BlackElo "2355"]
[PlyCount "62"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 0-0 6. Nge2 c5 7. d5 e6 8. 0-0 exd5 9. cxd5 b6 10. Rb1 Ba6 11. b4 Bxd3 12. Qxd3 Nbd7 13. Bf4 cxb4 14. Rxb4 Nc5 15. Qb1 Nh5 16. Be3 f5 17. exf5 gxf5 18. Nb5 a6 19. Nbd4 f4 20. Bc1 Qe7 21. Rxb6 Rae8 22. Qc2 f3 23. gxf3 Qe5 24. Ne6 Nxe6 25. dxe6 Rxe6 26. Ng3 Nxg3 27. hxg3 Rxf3 28. Rb8+ Rf8 29. Rxf8+ Bxf8 30. Bf4 Qe4 31. Qb3 h5 1/2-1/2

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "6"]
[White "Watanabe, Roberto Tadashi"]
[Black "Braga, Cicero Nogueira"]
[Result "1-0"]
[ECO "B41"]
[WhiteElo "2325"]
[BlackElo "2355"]
[PlyCount "73"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Qc7 7. a3 Nxe4 8. Nxe4 Qe5 9. Bd3 Qxd4 10. 0-0 Nc6 11. Be3 Qe5 12. f4 Qc7 13. f5 d6 14. Rc1 Ne5 15. Bb1 Be7 16. f6 gxf6 17. Nxf6+ Bxf6 18. Rxf6 Bd7 19. c5 dxc5 20. Bf4 Bc6 21. Qh5 Rg8 22. g3 Nf3+ 23. Qxf3 Qd8 24. Rxe6+ fxe6 25. Qh5+ Rg6 26. Qxh7 Qd4+ 27. Kf1 Bb5+ 28. Kg2 Bc6+ 29. Kh3 Rg7 30. Qh5+ Kf8 31. Be5 Bg2+ 32. Kxg2 Qd2+ 33. Kh3 Qxc1 34. Qh8+ Rg8 35. Qf6+ Ke8 36. Qxe6+ Kd8 37. Qxg8+ 1-0

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "3"]
[White "Watanabe, Roberto Tadashi"]
[Black "Figari, Esteban"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "2275"]
[PlyCount "67"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Bd7 5. d3 Nc6 6. 0-0 g6 7. Re1 Bg7 8. Bf1 0-0 9. h3 Rc8 10. a3 e5 11. b4 b5 12. Nbd2 Qc7 13. Nb3 Ne7 14. Bd2 Be6 15. Ng5 c4 16. Nxe6 fxe6 17. Na5 d5 18. a4 a6 19. exd5 exd5 20. axb5 axb5 21. dxc4 dxc4 22. Be3 Nfd5 23. Bc5 Nxc3 24. Qg4 Kh8 25. Nxc4 Na4 26. Bd6 Qb7 27. Nxe5 Nf5 28. Bxf8 Rxf8 29. Rad1 Nh6 30. Qe6 Qa7 31. Re3 Nb6 32. Rf3 Rb8 33. Nc6 Qa2 34. Qxa2 1-0

[Event "Buenos Aires TB IV"]
[Site "Buenos Aires"]
[Date "1991.??.??"]
[Round "?"]
[White "Watanabe, Roberto Tadashi"]
[Black "Fraschini, Mariano"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "2275"]
[BlackElo "2350"]
[PlyCount "23"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Bg4 7. e3 e6 8. Be2 Be7 9. 0-0 0-0 10. Ne5 Bxe2 11. Qxe2 Nxe5 12. Bxe5 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "5"]
[White "Watanabe, Roberto Tadashi"]
[Black "Moreno, Alberto"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2275"]
[BlackElo "2235"]
[PlyCount "69"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 c5 5. e3 b6 6. Bd3 Bb7 7. 0-0 0-0 8. c3 d6 9. Qe2 Nc6 10. a3 h6 11. Bh4 a6 12. e4 Nh5 13. d5 Nf4 14. Qe3 Ne5 15. Nxe5 Bxe5 16. Bc2 g5 17. Bg3 b5 18. Nf3 f6 19. Nh4 Bc8 20. Qf3 Qe8 21. Bxf4 Bxf4 22. g3 gxh4 23. Qxf4 Qh5 24. Kh1 Kh8 25. gxh4 Bg4 26. f3 Bd7 27. Rg1 Rf7 28. Rg3 Rg8 29. a4 Rfg7 30. axb5 Bxb5 31. Ba4 Rb8 32. Bxb5 Rxb5 33. Rxa6 Kh7 34. Ra7 Qf7 35. Qf5+ 1-0

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "1"]
[White "Watanabe, Roberto Tadashi"]
[Black "Resende, Antonio Carlos"]
[Result "1/2-1/2"]
[ECO "B09"]
[WhiteElo "2325"]
[BlackElo "2330"]
[PlyCount "42"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. f4 d6 4. Nf3 Nf6 5. Nc3 c5 6. Bb5+ Bd7 7. e5 Ng4 8. e6 Bxb5 9. exf7+ Kd7 10. Nxb5 Qa5+ 11. Nc3 cxd4 12. Nxd4 Bxd4 13. Qxg4+ Qf5 14. Qxf5+ gxf5 15. Bd2 Nc6 16. 0-0-0 Raf8 17. Ne2 Bf6 18. Bc3 Rxf7 19. Bxf6 Rxf6 20. Ng1 Re6 21. Nf3 Re2 1/2-1/2

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "3"]
[White "Watanabe, Roberto Tadashi"]
[Black "Resende, Antonio Carlos"]
[Result "1/2-1/2"]
[ECO "A90"]
[WhiteElo "2325"]
[BlackElo "2330"]
[PlyCount "34"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. c4 d5 5. Nf3 c6 6. 0-0 Bd6 7. b3 Qe7 8. Qc2 0-0 9. a4 Ne4 10. a5 Nd7 11. Ba3 Ndf6 12. e3 Bd7 13. Bxd6 Nxd6 14. Ne5 a6 15. Nd2 Be8 16. f3 Rd8 17. Kh1 g5 1/2-1/2

[Event "BRA-ch m"]
[Site "Brazil"]
[Date "1991.??.??"]
[Round "6"]
[White "Watanabe, Roberto Tadashi"]
[Black "Resende, Antonio Carlos"]
[Result "1-0"]
[ECO "E67"]
[WhiteElo "2325"]
[BlackElo "2330"]
[PlyCount "31"]
[EventDate "1991.??.??"]
[EventType "k.o."]
[EventRounds "8"]
[EventCountry "BRA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. Nc3 d6 5. d4 Nbd7 6. Nf3 g6 7. 0-0 Bg7 8. Qc2 0-0 9. Rd1 Re8 10. b3 Qc7 11. Ba3 e4 12. Ng5 e3 13. f3 Qa5 14. Nxf7 Kxf7 15. Bxd6 Nf8 16. Ne4 1-0

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "11"]
[White "Watanabe, Roberto Tadashi"]
[Black "Ribas, Alejandro"]
[Result "1-0"]
[ECO "C69"]
[WhiteElo "2275"]
[PlyCount "101"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 f6 6. d4 Bg4 7. dxe5 Qxd1 8. Rxd1 fxe5 9. Rd3 Bd6 10. Nbd2 b5 11. b3 Ne7 12. Ne1 Ng6 13. Rg3 Bd7 14. Bb2 0-0 15. Kf1 Nf4 16. c4 c5 17. Nd3 Nxd3 18. Rxd3 Bc6 19. Ke2 Rf4 20. f3 g5 21. h3 h5 22. g4 Kf7 23. Nf1 hxg4 24. hxg4 Rh8 25. Bc1 Rf6 26. Bxg5 Rg6 27. Be3 Rh1 28. Rad1 Rf6 29. Ng3 Rh2+ 30. Bf2 Bf8 31. Rh1 Rxh1 32. Nxh1 bxc4 33. bxc4 Be8 34. Be1 Rb6 35. Bc3 Rb1 36. Ng3 Rc1 37. Bxe5 Rxc4 38. g5 Bb5 39. Ke3 Ra4 40. Rd2 Bc4 41. f4 Ra3+ 42. Kf2 Rxa2 43. Rxa2 Bxa2 44. f5 Bd6 45. g6+ Kf8 46. Bc3 Bf4 47. Ne2 Bh6 48. Ba5 c6 49. Bb6 c4 50. Nc3 Bb3 51. f6 1-0

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "9"]
[White "Watanabe, Roberto Tadashi"]
[Black "Roman, Facundo"]
[Result "1-0"]
[ECO "B60"]
[WhiteElo "2275"]
[PlyCount "57"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Bxf6 gxf6 8. Nb3 Rc8 9. Qh5 a6 10. Be2 Qb6 11. Nd5 Qa7 12. 0-0 Nd4 13. Bg4 Ne6 14. Bf5 Bg7 15. c3 b5 16. Rfe1 Kf8 17. Re3 Nc5 18. Bxd7 Nxd7 19. Rg3 Ne5 20. Nd4 e6 21. Nf4 Qd7 22. Qh3 Ng6 23. Nh5 Rg8 24. f4 Ne7 25. Nxg7 Rxg7 26. Qh6 Ng6 27. f5 e5 28. fxg6 fxg6 29. Ne2 1-0

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "7"]
[White "Watanabe, Roberto Tadashi"]
[Black "Scarella, Enrique Alejandro"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2275"]
[BlackElo "2245"]
[PlyCount "44"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 0-0 7. Re1 c6 8. a4 a5 9. Ba2 exd4 10. Nxd4 Nc5 11. Qf3 Nfd7 12. Nf5 Ne5 13. Nxe7+ Qxe7 14. Qg3 Be6 15. f4 Ned7 16. Nd5 cxd5 17. exd5 Qf6 18. dxe6 fxe6 19. Bd2 d5 20. Bc3 Qh6 21. Rad1 Rf7 22. Bd2 Qf6 1/2-1/2

[Event "Buenos Aires TB IV"]
[Site "Buenos Aires"]
[Date "1991.??.??"]
[Round "?"]
[White "Watanabe, Roberto Tadashi"]
[Black "Sequera Paolini, Jose Rafael"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "2275"]
[PlyCount "73"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 0-0 8. Bd3 f5 9. exf6 Rxf6 10. Bg5 Nd7 11. dxc5 e5 12. Bxf6 Nxf6 13. Qb4 Nc6 14. Qb2 a6 15. Be2 Qe7 16. Nf3 Bg4 17. 0-0 Rf8 18. Rae1 Ne4 19. c4 Rxf3 20. Bxf3 Bxf3 21. gxf3 Nd2 22. Kh1 Nxf3 23. Re3 Ncd4 24. Rg1 Qf7 25. Rg3 dxc4 26. c6 b5 27. Rexf3 Nxf3 28. c7 Qxc7 29. Rxf3 Qc6 30. Qc3 Qd5 31. h3 a5 32. Kg2 h5 33. Qxa5 g5 34. Qb6 Kg7 35. Qc7+ Kg6 36. Qc8 Qe4 37. Qe6+ 1-0

[Event "Pan American-ch U20"]
[Site "Bariloche"]
[Date "1991.??.??"]
[Round "1"]
[White "Watanabe, Roberto Tadashi"]
[Black "Vescovi, Giovanni P"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "2275"]
[BlackElo "2260"]
[PlyCount "25"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[EventCategory "1"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4 d6 10. Qd3 Rb8 11. b3 Bd7 12. Bb2 Bc6 13. Rac1 1/2-1/2

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.10.??"]
[Round "7"]
[White "Watanabe, Roberto Tadashi"]
[Black "Dumont, Sadi Glasser"]
[Result "1/2-1/2"]
[ECO "B49"]
[WhiteElo "2255"]
[BlackElo "2320"]
[PlyCount "16"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be2 Nf6 7. 0-0 Qc7 8. Be3 Bb4 1/2-1/2

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.10.??"]
[Round "2"]
[White "Watanabe, Roberto Tadashi"]
[Black "Rodrigues, Adriano Pfuhl"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2255"]
[PlyCount "24"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d5 5. Nbd2 0-0 6. h3 b6 7. Be2 Bb7 8. 0-0 c5 9. c3 Nbd7 10. Ne5 Nxe5 11. Bxe5 Nd7 12. Bxg7 Kxg7 1/2-1/2

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.??.??"]
[Round "6"]
[White "Asfora, Marco Antonio Hazin"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "C82"]
[WhiteElo "2310"]
[BlackElo "2255"]
[PlyCount "70"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 0-0 11. Bc2 Bf5 12. Nb3 Bg6 13. Nxc5 Nxc5 14. Be3 Ne6 15. Bb3 Be4 16. Ne1 d4 17. cxd4 Nexd4 18. f4 Qe7 19. Bxd4 Rad8 20. Qe2 Rxd4 21. Nf3 Rb4 22. Rac1 Bxf3 23. Qxf3 Nd4 24. Qe3 g6 25. Rc3 Rd8 26. Rfc1 c6 27. a3 Nf5 28. Qb6 Rxf4 29. Rxc6 Nd4 30. Rxg6+ hxg6 31. Qxg6+ Kf8 32. Qh6+ Ke8 33. Qh8+ Qf8 34. Qh7 Ne2+ 35. Kh1 Nxc1 0-1

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "10"]
[White "Camejo Almeida, Rui"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2360"]
[BlackElo "2255"]
[PlyCount "75"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nc6 7. Nc3 e5 8. d5 Ne7 9. e4 a5 10. c5 dxc5 11. Be3 Nd7 12. Qd2 b6 13. Rfd1 Nb8 14. Nb5 c6 15. d6 Nd5 16. Bg5 f6 17. Nxe5 Qe8 18. Nxc6 Qxc6 19. e5 Bb7 20. Nc7 Nxc7 21. Bxc6 Nxc6 22. exf6 Nd4 23. Qe3 Rfe8 24. f7+ Kxf7 25. Qf4+ Kg8 26. Rxd4 Ne6 27. d7 Nxf4 28. dxe8Q+ Rxe8 29. Rxf4 h6 30. Bf6 g5 31. Rf5 Bc8 32. Re5 Rxe5 33. Bxe5 Bxe5 34. Re1 Bxb2 35. Re8+ Kf7 36. Rxc8 Bd4 37. a4 Ke7 38. Rc6 1-0

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "13"]
[White "Comas Fabrego, Luis"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "E70"]
[WhiteElo "2350"]
[BlackElo "2255"]
[PlyCount "29"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nge2 0-0 6. Ng3 c5 7. d5 e6 8. Be2 exd5 9. exd5 Nbd7 10. 0-0 Ne8 11. f4 Bd4+ 12. Kh1 Bxc3 13. bxc3 f5 14. Bd3 Nb6 15. Bd2 1/2-1/2

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.??.??"]
[Round "5"]
[White "Correa, Aron Antunes"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "D79"]
[WhiteElo "2355"]
[BlackElo "2255"]
[PlyCount "72"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. Nc3 0-0 5. Nf3 c6 6. 0-0 d5 7. cxd5 cxd5 8. d4 Nc6 9. Ne5 e6 10. f4 Nd7 11. Be3 f6 12. Nxc6 bxc6 13. Bf2 Rb8 14. Na4 Ba6 15. Rc1 Bb5 16. Nc5 Nxc5 17. Rxc5 Rf7 18. b3 Bf8 19. Rc2 Ba3 20. Be3 Qb6 21. Bc1 Bf8 22. Be3 a5 23. Qb1 Ra7 24. h4 a4 25. h5 axb3 26. axb3 f5 27. Kf2 Bc4 28. hxg6 hxg6 29. Rfc1 Qa6 30. Rc3 Rab7 31. Rh1 Rxb3 32. Rxb3 Rxb3 33. Qg1 Bxe2 34. Bf3 Qd3 35. Bc1 Qxf3+ 36. Ke1 Bb4+ 0-1

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "11"]
[White "Demir, Gokhan"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1/2-1/2"]
[ECO "B33"]
[BlackElo "2255"]
[PlyCount "63"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Ne7 12. Nxe7 Qxe7 13. Nc2 Bb7 14. Bd3 Bg5 15. 0-0 0-0 16. Re1 Rad8 17. Qe2 d5 18. exd5 Rxd5 19. Nb4 Rd6 20. Be4 Rd2 21. Qf3 Bxe4 22. Qxe4 a5 23. Nd3 Rd8 24. Nxe5 f6 25. Nc6 Qxe4 26. Rxe4 f5 27. Nxd8 fxe4 28. Ne6 Bf6 29. Rb1 Be7 30. Kf1 b4 31. cxb4 axb4 32. Re1 1/2-1/2

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "5"]
[White "Grigore, George Gabriel"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "E92"]
[WhiteElo "2360"]
[BlackElo "2255"]
[PlyCount "75"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. Bg5 Qe8 8. d5 h6 9. Bxf6 Bxf6 10. h4 Bg7 11. h5 g5 12. Nd2 f5 13. exf5 e4 14. Ndxe4 Bxf5 15. Ng3 Nd7 16. 0-0 Bxc3 17. bxc3 Bh7 18. Bd3 Bxd3 19. Qxd3 Nc5 20. Qc2 Rf4 21. Rae1 Qf7 22. Re3 Re8 23. Nf5 Qxh5 24. Rh3 Qe2 25. Nxh6+ Kg7 26. Nf5+ Kg8 27. Qb1 Re5 28. Nxd6 Nd3 29. Rxd3 cxd6 30. Rh3 Rfe4 31. Rh6 Qxc4 32. Rxd6 Rxd5 33. Qxb7 Rxd6 34. Qb8+ Kg7 35. Qxd6 Qxc3 36. Qd7+ Kg6 37. Qxa7 g4 38. g3 1-0

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "7"]
[White "Sequera Paolini, Jose Rafael"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2285"]
[BlackElo "2255"]
[PlyCount "117"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. 0-0 Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Qxd4 Qxd4 11. Nxd4 a6 12. Nb3 b5 13. Be2 Bd7 14. Bf3 Rc8 15. c3 Be7 16. Na5 0-0 17. Bb7 Rcd8 18. Be3 Nd5 19. Bxd5 exd5 20. Rfd1 Rc8 21. Rxd5 Be6 22. Rdd1 h5 23. Nb3 Rc4 24. Nd4 Bc8 25. Nf3 f6 26. Rd4 Be6 27. Re1 Kf7 28. Bd2 Rfc8 29. Rd3 Bf5 30. Rd5 R8c5 31. Rxc5 Rxc5 32. Nd4 Bc8 33. Kf1 g5 34. Be3 Rc7 35. Rd1 f5 36. Nf3 f4 37. Bb6 Rb7 38. Bd8 g4 39. Ne5+ Ke6 40. Bxe7 Kxe5 41. Bd6+ Kf5 42. Rd5+ Kg6 43. Bxf4 h4 44. Rg5+ Kf6 45. Rh5 h3 46. gxh3 gxh3 47. Rh6+ Kf5 48. Be3 Ke4 49. Rc6 Bg4 50. Rxa6 Rd7 51. Bd4 b4 52. Ra4 bxc3 53. Bxc3+ Kf3 54. Rd4 Ra7 55. Bd2 Rf7 56. a4 Bd7 57. Rb4 Bc8 58. Rb3+ Ke4 59. Re3+ 1-0

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "4"]
[White "Sjodahl, Pontus"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "E84"]
[WhiteElo "2325"]
[BlackElo "2255"]
[PlyCount "60"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Nge2 a6 8. Qd2 Rb8 9. Bh6 b5 10. h4 bxc4 11. 0-0-0 Nb4 12. Ng3 c5 13. Bxg7 Kxg7 14. dxc5 Be6 15. cxd6 Qa5 16. a3 Nd3+ 17. Bxd3 cxd3 18. Qxd3 Rfc8 19. Rd2 Nd7 20. Qd4+ Kg8 21. Kd1 Ne5 22. Nd5 Bxd5 23. exd5 exd6 24. h5 Rc4 25. Qa7 Re8 26. hxg6 Qa4+ 27. Ke2 Ng4+ 28. Ne4 Rcxe4+ 29. fxe4 Qxe4+ 30. Kf1 Qe1# 0-1

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.??.??"]
[Round "1"]
[White "Teixeira, Ricardo da Silva"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "C18"]
[WhiteElo "2370"]
[BlackElo "2255"]
[PlyCount "68"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 dxc3 12. Qd3 Bd7 13. Nxc3 a6 14. Rb1 Rc8 15. h4 Nf5 16. Rh3 Nce7 17. h5 Nh6 18. Bd2 Nef5 19. Rb2 Bc6 20. Ne2 d4 21. Ng3 Qd8 22. Ne4 Ng4 23. h6 Qd5 24. h7 Rh8 25. Nf6+ Nxf6 26. exf6 Nd6 27. Qg3 Kd7 28. Qg5 Qe4+ 29. Kd1 Rxh7 30. Bd3 Rxh3 31. Bxe4 Rh1+ 32. Ke2 Bxe4 33. Qe5 Rg8 34. Qxd4 Rxg2+ 0-1

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.??.??"]
[Round "8"]
[White "Toth, Peter"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2245"]
[BlackElo "2255"]
[PlyCount "84"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. Nf3 d6 4. g3 f5 5. Bg2 e5 6. d3 Nf6 7. Bd2 h6 8. Qb3 Nc6 9. Nd5 0-0 10. Bc3 Ne7 11. Rc1 Rb8 12. 0-0 Be6 13. Nxe7+ Qxe7 14. Qa3 Qd7 15. b4 a6 16. Qb2 b5 17. Nd2 Qf7 18. a3 g5 19. cxb5 axb5 20. Qc2 Rfc8 21. Qb1 c6 22. Bb2 Rb6 23. e3 h5 24. Nf3 Nh7 25. Rfe1 f4 26. exf4 gxf4 27. Nd2 h4 28. Ne4 hxg3 29. fxg3 Rd8 30. Qc2 Bh6 31. Rf1 Bd5 32. Rce1 Qg6 33. Kh1 Rf8 34. d4 exd4 35. Bxd4 Rb7 36. gxf4 Bxf4 37. Rg1 Ng5 38. Qc3 Rh7 39. h3 Kf7 40. Nxg5+ Qxg5 41. Be4 Re8 42. Bxd5+ Qxd5+ 0-1

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.??.??"]
[Round "10"]
[White "Trois, Francisco R Torres"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "E94"]
[WhiteElo "2385"]
[BlackElo "2255"]
[PlyCount "90"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 Nf6 4. e4 d6 5. d4 0-0 6. Be3 Na6 7. Be2 e5 8. 0-0 Qe8 9. dxe5 dxe5 10. Nd2 Nd7 11. Nb5 Qe7 12. Nb3 Ndc5 13. f3 Rd8 14. Qc2 c6 15. Nc3 Ne6 16. Rfd1 Nd4 17. Qc1 Be6 18. Bf1 Nb4 19. Bxd4 exd4 20. Ne2 d3 21. Nf4 Bh6 22. Nxg6 Qg5 23. Ne7+ Kf8 24. Qxg5 Bxg5 25. Nf5 Bxc4 26. h4 Bf6 27. Rac1 Be6 28. Nc5 Bxf5 29. exf5 Bxb2 30. Rc4 Rd4 31. Rxb4 Rxb4 32. Nxd3 Bd4+ 33. Kh2 Ra4 34. Kh3 Rd8 35. Rb1 b6 36. g3 Rxa2 37. Nf4 Be3 38. Nh5 Rad2 39. Rb4 Bc5 40. Rg4 Rf2 41. Bc4 Rd4 42. Nf6 Rxg4 43. Kxg4 h6 44. Bd3 a5 45. Be4 a4 0-1

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.??.??"]
[Round "3"]
[White "Tsuboi, Edson Kenji"]
[Black "Watanabe, Roberto Tadashi"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2315"]
[BlackElo "2255"]
[PlyCount "139"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. Nf3 Bd6 11. 0-0 Qb6 12. Nc3 0-0 13. Be3 Bd7 14. Rc1 Be8 15. h3 Bh5 16. g4 Nxg4 17. hxg4 Bxg4 18. Be2 Rf6 19. Ng5 Bxe2 20. Nxe2 Raf8 21. Kg2 h6 22. Nh3 Qxb2 23. Qc2 Qb6 24. Rh1 Ne7 25. Qd3 Ng6 26. Kf1 Qa5 27. Rc2 e5 28. dxe5 Nxe5 29. Qb3 Nc4 30. Rxc4 dxc4 31. Qxc4+ Kh8 32. Nhf4 Bxf4 33. Nxf4 Qa6 34. Qxa6 Rxa6 35. Kg2 Kh7 36. Rb1 Rf7 37. Rb2 b6 38. Ne2 Ra4 39. Nd4 Rd7 40. Nf3 Rc7 41. Nd4 Kg8 42. Re2 Rd7 43. Nb3 Rg4+ 44. Kf3 h5 45. Rc2 Rf7+ 46. Ke2 h4 47. Nd4 h3 48. Rc1 h2 49. Rh1 Rg1 50. Rxh2 Ra1 51. Rh5 Rxa2+ 52. Kd3 Rb7 53. Rd5 a6 54. Rd8+ Kh7 55. Ne6 Kg6 56. Bd4 Ra4 57. Rd6 Rxd4+ 58. Nxd4+ Kg5 59. Ke4 Re7+ 60. Ne6+ Kf6 61. Kd5 Kf5 62. Nd4+ Kf4 63. Rxb6 a5 64. Ra6 g5 65. Rf6+ Kg4 66. Nc6 Rb7 67. Ke4 Rb1 68. Nxa5 Re1+ 69. Kd3 Kh3 70. Nc4 1-0

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.??.??"]
[Round "4"]
[White "Watanabe, Roberto Tadashi"]
[Black "Cavalcanti, Francisco de Assis"]
[Result "1-0"]
[ECO "D79"]
[WhiteElo "2255"]
[BlackElo "2355"]
[PlyCount "81"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nf3 c6 5. 0-0 0-0 6. Nc3 d5 7. cxd5 cxd5 8. d4 Nc6 9. Ne5 e6 10. f4 Nd7 11. Be3 Nb6 12. Bf2 Bd7 13. e4 dxe4 14. Nxe4 f6 15. Nxd7 Qxd7 16. Nc5 Qf7 17. Nxe6 Qxe6 18. d5 Qf5 19. dxc6 bxc6 20. Bxc6 Rac8 21. Qb3+ Kh8 22. Rac1 Rfd8 23. Rfd1 h5 24. Rxd8+ Rxd8 25. Qf7 Rc8 26. Re1 Rf8 27. Qxa7 Nc4 28. Qc5 Nxb2 29. Qxf5 gxf5 30. Re8 Nd3 31. Bd4 Nb4 32. Bc5 Rxe8 33. Bxe8 Nxa2 34. Bxh5 Kh7 35. Bd1 Nc3 36. Bc2 Ne4 37. Bb4 Kg6 38. Kg2 Kh5 39. Kf3 Bh6 40. h3 Kg6 41. g4 1-0

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "9"]
[White "Watanabe, Roberto Tadashi"]
[Black "Minero Pineda, Sergio"]
[Result "1-0"]
[ECO "E97"]
[WhiteElo "2255"]
[BlackElo "2285"]
[PlyCount "79"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Nd2 c5 10. a3 a5 11. Rb1 Ne8 12. b4 axb4 13. axb4 b6 14. bxc5 bxc5 15. Nb3 f5 16. Bg5 Nf6 17. Nxc5 dxc5 18. d6 Be6 19. dxe7 Qxe7 20. f3 Rad8 21. Qc2 h6 22. Be3 Nh5 23. Nd5 Bxd5 24. cxd5 Nf4 25. Bc4 Kh8 26. Rb5 Rc8 27. Rfb1 fxe4 28. fxe4 h5 29. g3 Nh3+ 30. Kg2 Ng5 31. d6 Qd8 32. d7 Ra8 33. Bd5 Bh6 34. Bxa8 Qxa8 35. Rxc5 Qa3 36. Rc3 Qd6 37. Rc8 Kh7 38. Bc5 Qxd7 39. Bxf8 Qg4 40. Qc7+ 1-0

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.??.??"]
[Round "11"]
[White "Watanabe, Roberto Tadashi"]
[Black "Oliveira, Paulo Sergio De Cas"]
[Result "1/2-1/2"]
[ECO "C71"]
[WhiteElo "2255"]
[BlackElo "2205"]
[PlyCount "67"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 b5 6. Bb3 Nxd4 7. Nxd4 exd4 8. c3 Bb7 9. 0-0 Be7 10. cxd4 Bxe4 11. Nc3 Bg6 12. Bd5 Rb8 13. Bc6+ Kf8 14. Nd5 Bh4 15. Re1 Ne7 16. Nxe7 Bxe7 17. Bd2 d5 18. Qb3 Be4 19. f3 Rb6 20. Rac1 Qd6 21. fxe4 Rxc6 22. Rxc6 Qxc6 23. exd5 Qf6 24. Qe3 g5 25. Rf1 Qb6 26. Qe6 Qxe6 27. dxe6 f6 28. Bxg5 Kg7 29. Be3 Rd8 30. Rf5 c6 31. Kf2 Rd6 32. Kf3 Rxe6 33. d5 cxd5 34. Rxd5 1/2-1/2

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "8"]
[White "Watanabe, Roberto Tadashi"]
[Black "Peralta, Eduardo"]
[Result "1-0"]
[ECO "C08"]
[WhiteElo "2255"]
[BlackElo "2255"]
[PlyCount "93"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 a6 4. Ngf3 c5 5. exd5 exd5 6. Be2 Nc6 7. 0-0 cxd4 8. Re1 Be7 9. Nb3 Nf6 10. Nbxd4 0-0 11. c3 Bg4 12. h3 Bxf3 13. Bxf3 Qd7 14. Qd3 Rfe8 15. Nf5 Bf8 16. Bf4 b5 17. Rad1 h6 18. Rxe8 Rxe8 19. Ne3 Ne5 20. Bxe5 Rxe5 21. Bxd5 Bc5 22. Bb3 Qa7 23. Kf1 Bxe3 24. fxe3 Rxe3 25. Qd4 Qxd4 26. Rxd4 Kf8 27. Rd6 a5 28. Rb6 Re5 29. Rb8+ Ne8 30. a4 bxa4 31. Bxa4 f6 32. Ra8 Kf7 33. Ra7+ Kf8 34. Ra8 Kf7 35. Bxe8+ Rxe8 36. Rxa5 Rb8 37. b4 Rc8 38. Ra3 Ke6 39. Ke2 Rd8 40. Ra2 h5 41. Ke3 Rd1 42. Rd2 Rb1 43. Kd4 Kd6 44. Kc4+ Kc6 45. Ra2 Kb6 46. Re2 Kc6 47. Re7 1-0

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "12"]
[White "Watanabe, Roberto Tadashi"]
[Black "Stephens, Malcolm"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2255"]
[PlyCount "91"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. 0-0 Bd6 11. Nf3 Qc7 12. Bg5 0-0 13. Bh4 Nh5 14. Qc2 Nf6 15. Bg3 Bxg3 16. hxg3 g6 17. Bb5 Qb6 18. Bxc6 bxc6 19. Nc3 Ng4 20. Na4 Qc7 21. Rfe1 Bd7 22. Nc5 Qd6 23. Rac1 Rac8 24. Re2 Rfe8 25. Rce1 Re7 26. Qd2 Rf8 27. Qg5 Nf6 28. Qe5 Qxe5 29. Nxe5 Be8 30. Re3 Nh5 31. Ned3 Bf7 32. Nb4 Rc8 33. Nxe6 Bxe6 34. Rxe6 Rb7 35. Nxc6 Kf7 36. Rd6 Rxb2 37. Re7+ Kg8 38. Rxa7 Rf8 39. f3 Nxg3 40. Ne7+ Kh8 41. Nxd5 Rb1+ 42. Kh2 Nh5 43. Rdd7 Rd1 44. Ne3 Rd2 45. Rxh7+ Kg8 46. Ng4 1-0

[Event "BRA-ch 57th"]
[Site "Porto Alegre"]
[Date "1990.??.??"]
[Round "9"]
[White "Watanabe, Roberto Tadashi"]
[Black "Toth, Christian Endre"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "2255"]
[BlackElo "2290"]
[PlyCount "55"]
[EventDate "1990.10.05"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "BRA"]
[EventCategory "2"]
[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. f4 Bg7 5. Nf3 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Qe2 Bg4 9. Be3 Qa5 10. 0-0 0-0 11. Qe1 Nc6 12. Kh1 Nb4 13. Nd4 Nxd3 14. cxd3 Bd7 15. f5 Ng4 16. Bg1 Qd8 17. Qh4 Ne5 18. Rad1 e6 19. f6 h6 20. h3 Re8 21. Be3 Kh7 22. Bg5 Bf8 23. g4 Rc8 24. Bxh6 g5 25. Bxg5+ Kg8 26. Bh6 Ng6 27. Qh5 Rc5 28. g5 1-0

[Event "Wch U20"]
[Site "Santiago de Chile"]
[Date "1990.??.??"]
[Round "6"]
[White "Watanabe, Roberto Tadashi"]
[Black "Zapata Ferrada, Marco"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "2255"]
[PlyCount "92"]
[EventDate "1990.08.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 h5 7. d3 Qf6 8. Be3 Bxf3 9. Qxf3 Qxf3 10. gxf3 Bd6 11. Nd2 Ne7 12. Kh2 f6 13. Nc4 0-0-0 14. h4 Kd7 15. Rg1 g6 16. Rab1 Ke6 17. b4 Rhg8 18. a4 Rdf8 19. Na5 b6 20. Nc4 Rb8 21. Kh3 Rgc8 22. c3 Rg8 23. d4 b5 24. axb5 axb5 25. Na5 Rbf8 26. dxe5 fxe5 27. Rg3 Nc8 28. Nxc6 Kd7 29. Na5 Nb6 30. Rd1 Na4 31. Rd3 Ke6 32. Kg2 Nb2 33. Rd5 Na4 34. Rd3 Nb2 35. Rd5 Na4 36. Rxb5 Nxc3 37. Rb7 Ne2 38. Rh3 Rb8 39. Kf1 Nf4 40. Bxf4 exf4 41. Rxb8 Rxb8 42. Nc6 Rb6 43. Nd4+ Ke5 44. Nc2 Bxb4 45. Ke2 Bc5 46. Rh1 Rb2 0-1

