[Event "Latin Cup-A 9th"]
[Site "Lima"]
[Date "2018.02.04"]
[Round "9"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Fernandez, Fernando"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2237"]
[BlackElo "2468"]
[PlyCount "117"]
[EventDate "2018.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Nf3 Nf6 5. Bg5 Nbd7 6. e3 c5 7. cxd5 exd5 8. Be2 Qa5 9. 0-0 Bxc3 10. bxc3 Ne4 11. c4 dxc4 12. Qc2 Nxg5 13. Nxg5 cxd4 14. Qe4+ Qe5 15. Qxe5+ Nxe5 16. exd4 Ng6 17. Bxc4 0-0 18. Rac1 Bf5 19. Rfe1 Rad8 20. h4 h6 21. Nxf7 Rxf7 22. h5 Nh8 23. Bxf7+ Nxf7 24. Rc7 Nd6 25. Ree7 Kh8 26. f3 Rg8 27. g4 Bc8 28. Rc5 Rd8 29. Rd5 Kg8 30. Kf2 Kf8 31. Rc7 Be6 32. Re5 Bxa2 33. g5 hxg5 34. Rxg5 Bf7 35. Re5 a6 36. Ree7 b5 37. Red7 Rxd7 38. Rxd7 Nc4 39. d5 Nb6 40. Rd6 Nxd5 41. Rxa6 Bxh5 42. Ra5 Be8 43. Ke2 Ke7 44. Ra7+ Bd7 45. Kd3 Kd6 46. Kd4 Nc7 47. Ra1 Bf5 48. Re1 g6 49. Rh1 Ne6+ 50. Kc3 Kc5 51. Rh8 Nd4 52. Rh7 Nxf3 53. Rc7+ Kd6 54. Rb7 Bd7 55. Rb8 g5 56. Rg8 Ke5 57. Rg7 Be6 58. Rb7 Bc4 59. Rg7 0-1

[Event "Latin Cup-A 9th"]
[Site "Lima"]
[Date "2018.02.02"]
[Round "8"]
[White "Fuentes Dominguez, Felix"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "2288"]
[BlackElo "2237"]
[PlyCount "122"]
[EventDate "2018.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. 0-0 g6 6. b3 Bg7 7. Bb2 0-0 8. d3 d6 9. Nbd2 a6 10. a3 Nc6 11. Qc2 b5 12. Rac1 e5 13. e3 Qe7 14. Rfe1 Nd7 15. d4 b4 16. a4 Rae8 17. d5 Nd8 18. e4 Bc8 19. Nf1 Nf6 20. Nh4 Nh5 21. Ra1 f5 22. exf5 g5 23. Nf3 Bxf5 24. Qd2 g4 25. Nh4 Bd7 26. Qc2 Nf7 27. Nf5 Qf6 28. Nxg7 Qxg7 29. Bc1 Ng5 30. Bxg5 Qxg5 31. Ra2 Ng7 32. Ne3 Nf5 33. Nxf5 Bxf5 34. Qd2 Qg6 35. Re3 Rf6 36. Qd1 Ref8 37. Rd2 Kg7 38. Qe2 h5 39. Bh1 Qg5 40. Bg2 Rh6 41. Be4 Bxe4 42. Rxe4 Rhf6 43. Qe3 Qg6 44. Qd3 Rf3 45. Re3 Rxe3 46. Qxg6+ Kxg6 47. fxe3 Rf3 48. Re2 Kf5 49. e4+ Kg6 50. Rf2 Rxb3 51. Rf8 Rc3 52. Rd8 Rxc4 53. Rxd6+ Kf7 54. Rb6 Rxe4 55. a5 Rd4 56. Kf2 Rxd5 57. Rxa6 c4 58. Rb6 Rxa5 59. Rxb4 Rc5 60. Rb2 c3 61. Rc2 Ke6 0-1

[Event "Latin Cup-A 9th"]
[Site "Lima"]
[Date "2018.02.02"]
[Round "7"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Berdayes Ason, Dylan Isidro"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "2237"]
[BlackElo "2416"]
[PlyCount "118"]
[EventDate "2018.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. e5 dxe5 7. fxe5 Nd5 8. Bc4 Nxc3 9. bxc3 c5 10. 0-0 Bg4 11. h3 Bxf3 12. Qxf3 Nc6 13. Bxf7+ Kh8 14. Qe4 cxd4 15. Bd5 Rxf1+ 16. Kxf1 dxc3 17. Bf4 Qb6 18. Bxc6 bxc6 19. Rd1 Rf8 20. Ke2 Qb5+ 21. Rd3 Qb1 22. Rf3 Qxa2 23. Rxc3 Qa6+ 24. Rd3 Qb5 25. Be3 a5 26. Bd2 a4 27. Bc3 a3 28. Qb4 Qa6 29. Qa5 Qb7 30. Qxa3 Qb1 31. Rf3 Qxc2+ 32. Kf1 Rxf3+ 33. gxf3 h5 34. Qc5 Kh7 35. Qe3 Qh2 36. f4 c5 37. Qf3 Qc2 38. Ke1 c4 39. Bd2 Qb3 40. Ke2 Qc2 41. Qc3 Qe4+ 42. Qe3 Qf5 43. Qf3 Bh6 44. Qe3 c3 45. Qxc3 Bxf4 46. Bxf4 Qxf4 47. Qc5 Qg5 48. Qd5 Kh6 49. Qe6 h4 50. Kd1 Kh5 51. Ke2 Qg2+ 52. Kd3 Qf1+ 53. Kd4 Qf2+ 54. Kc3 Qf5 55. Qxe7 Qxh3+ 56. Kd4 Qg4+ 57. Kc5 h3 58. e6 Qg1+ 59. Kd6 Qd4+ 0-1

[Event "Latin Cup-A 9th"]
[Site "Lima"]
[Date "2018.01.31"]
[Round "4"]
[White "Quintiliano Pinto, Renato Rodrigues"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2431"]
[BlackElo "2237"]
[PlyCount "65"]
[EventDate "2018.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e6 8. h3 c5 9. Be3 Qa5 10. Bd2 Qc7 11. Rc1 0-0 12. Be2 Nc6 13. 0-0 b6 14. Be3 Na5 15. Qd2 Bb7 16. Bf4 Qd8 17. Qe3 Qe7 18. Rfd1 cxd4 19. cxd4 Rfc8 20. h4 Rxc1 21. Rxc1 Rc8 22. Rxc8+ Bxc8 23. h5 Nc6 24. Bb5 Bd7 25. h6 Bf8 26. Bxc6 Bxc6 27. Ne5 Be8 28. Ng4 Qh4 29. f3 Be7 30. Qc3 f5 31. g3 Qh3 32. Qc7 Kf8 33. Bd6 1-0

[Event "Latin Cup-A 9th"]
[Site "Lima"]
[Date "2018.01.30"]
[Round "2"]
[White "Santiago, Yago de Moura"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2496"]
[BlackElo "2237"]
[PlyCount "57"]
[EventDate "2018.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. Be3 d6 6. h3 c6 7. g4 a6 8. g5 Nfd7 9. h4 b5 10. a3 bxc4 11. Bxc4 d5 12. Ba2 e5 13. exd5 exd4 14. Bxd4 Ne5 15. f4 Bg4 16. Qd2 Nbd7 17. fxe5 Nxe5 18. Kf1 Qd7 19. Bxe5 Bxe5 20. Kg2 Bf3+ 21. Nxf3 Qg4+ 22. Kf2 Qg3+ 23. Ke2 Bxc3 24. Qxc3 Rfe8+ 25. Kd1 cxd5 26. Re1 d4 27. Qb3 Rxe1+ 28. Nxe1 Qg4+ 29. Qf3 1-0

[Event "Latin Cup-A 9th"]
[Site "Lima"]
[Date "2018.01.29"]
[Round "1"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Vera Siguenas, Deivy Anthoni"]
[Result "1/2-1/2"]
[ECO "D63"]
[WhiteElo "2237"]
[BlackElo "2513"]
[PlyCount "144"]
[EventDate "2018.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Bg5 h6 6. Bh4 Be7 7. e3 0-0 8. Rc1 c5 9. Bxf6 Nxf6 10. cxd5 cxd4 11. Qxd4 Nxd5 12. Nxd5 exd5 13. Bd3 Qa5+ 14. Ke2 Bf6 15. Qc5 Qxa2 16. Rc2 b6 17. Qb4 Ba6 18. Qa3 Qxa3 19. bxa3 Rac8 20. Rhc1 Rxc2+ 21. Rxc2 Rc8 22. Rxc8+ Bxc8 23. Nd4 Bxd4 24. exd4 Kf8 25. Kd2 Ke7 26. Kc3 Bd7 27. f3 Kf6 28. g3 a5 29. Be2 Bh3 30. Kd2 Ke7 31. Ke3 Bf5 32. Kd2 Kd6 33. Kc3 Bh3 34. Kb3 g5 35. Kc3 Bd7 36. Bf1 Ba4 37. Be2 Kc6 38. Bf1 Bb5 39. Bg2 Be2 40. Kd2 Bc4 41. Bh3 Ba6 42. Bf5 Bf1 43. Kc3 Be2 44. Bg4 f5 45. Bxf5 Bxf3 46. Bd3 Kd6 47. Kd2 Ke6 48. Bb5 Be4 49. Ba6 Bb1 50. Bc8+ Kf6 51. Ba6 Bf5 52. Bb5 Bc8 53. Bd3 Bd7 54. Kc3 b5 55. Bc2 Bf5 56. Bd1 Be4 57. Bg4 Bf5 58. Be2 Bd7 59. Bd3 h5 60. Bc2 h4 61. Bd3 Kg7 62. Be2 Kg6 63. g4 Kf6 64. Kb3 Ke7 65. Kc3 Kd6 66. Kb3 Kc6 67. Kc3 Be8 68. Kb3 Bg6 69. Kc3 Be4 70. Kb3 Kb6 71. Kc3 Kc6 72. Kb3 Kb6 1/2-1/2

[Event "Lima Gran Prix IRT op"]
[Site "Lima"]
[Date "2015.12.15"]
[Round "7"]
[White "Rengifo Blancas, Renzo Jhonathan"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "2066"]
[BlackElo "2265"]
[PlyCount "111"]
[EventDate "2015.12.12"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Ng5 Ngf6 6. Bd3 e6 7. N1f3 Bd6 8. Qe2 h6 9. Ne4 Nxe4 10. Qxe4 Nf6 11. Qh4 Qa5+ 12. c3 Qh5 13. Qxh5 Nxh5 14. Ne5 Nf6 15. Bf4 Ke7 16. Nxf7 Kxf7 17. Bxd6 Rd8 18. Bc7 Rd7 19. Be5 b6 20. 0-0 Bb7 21. Rae1 Rc8 22. f4 g6 23. f5 exf5 24. Bxf5 gxf5 25. Rxf5 Kg6 26. Rxf6+ Kh7 27. Ref1 Rcd8 28. Re6 c5 29. Rff6 cxd4 30. Rxh6+ Kg8 31. Reg6+ Kf8 32. Rh8+ Kf7 33. Rxd8 Rxd8 34. Rg7+ Ke6 35. cxd4 Bd5 36. Rxa7 Rc8 37. Rc7 Rg8 38. g3 Kf5 39. Kf2 Ke4 40. h4 Rf8+ 41. Ke2 Be6 42. Kd2 Rf2+ 43. Kc3 Bxa2 44. b3 Bb1 45. Kb4 Bd3 46. h5 Rh2 47. g4 Rh4 48. Rc6 Be2 49. Rxb6 Bxg4 50. h6 Bf5 51. Rf6 Rh1 52. Kc5 Bh7 53. b4 Bg8 54. b5 Rc1+ 55. Kd6 Rb1 56. Rf8 1-0

[Event "Lima Gran Prix IRT op"]
[Site "Lima"]
[Date "2015.12.14"]
[Round "5"]
[White "Correa Atucsa, Breiner Roiser"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "0-1"]
[ECO "D80"]
[WhiteElo "2036"]
[BlackElo "2265"]
[PlyCount "66"]
[EventDate "2015.12.12"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Bg7 5. Bxf6 Bxf6 6. cxd5 c6 7. e3 cxd5 8. Qb3 e6 9. Bb5+ Nc6 10. Nf3 0-0 11. Bxc6 bxc6 12. 0-0 c5 13. dxc5 Qa5 14. Rfc1 Bd7 15. Nd4 Rab8 16. Qc2 Rfc8 17. Qd2 Be7 18. Nb3 Qb4 19. e4 a5 20. exd5 a4 21. dxe6 Bxe6 22. Nd4 Rd8 23. Rd1 Bxc5 24. Qg5 Rxd4 25. a3 Rxd1+ 26. Rxd1 Be7 27. Qg3 Qxb2 28. Nxa4 Qb3 29. Qxb3 Rxb3 30. h3 Rxa3 31. Nb6 Bc5 32. Nd7 Bxd7 33. Rxd7 Ra1+ 0-1

[Event "Lima Gran Prix IRT op"]
[Site "Lima"]
[Date "2015.12.14"]
[Round "6"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Donayre, Bertin"]
[Result "1/2-1/2"]
[ECO "D94"]
[WhiteElo "2265"]
[BlackElo "2125"]
[PlyCount "18"]
[EventDate "2015.12.12"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 g6 3. e3 Nf6 4. d4 Bg7 5. Nc3 0-0 6. Be2 cxd4 7. exd4 d5 8. h3 Nc6 9. 0-0 Be6 1/2-1/2

[Event "Lima Gran Prix IRT op"]
[Site "Lima"]
[Date "2015.12.13"]
[Round "4"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Terry, Renato"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "2265"]
[BlackElo "2465"]
[PlyCount "62"]
[EventDate "2015.12.12"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]

1. d4 e6 2. e4 d5 3. Nd2 Be7 4. Ngf3 Nf6 5. Bd3 c5 6. dxc5 Bxc5 7. 0-0 0-0 8. a3 Nc6 9. b4 Bd6 10. Bb2 Bf4 11. Qe2 Ng4 12. Rad1 Qc7 13. g3 Be5 14. Nxe5 Ngxe5 15. b5 Nxd3 16. Qxd3 Ne5 17. Qc3 Qxc3 18. Bxc3 Ng6 19. Bb4 Re8 20. c4 d4 21. c5 a6 22. bxa6 Rxa6 23. Nc4 e5 24. Nd6 Rd8 25. f4 f6 26. fxe5 fxe5 27. Nf7 Rd7 28. Nd6 Rc7 29. Nb5 Rcc6 30. Rc1 Bh3 31. Rfe1 Nf8 0-1

[Event "Lima Gran Prix IRT op"]
[Site "Lima"]
[Date "2015.12.13"]
[Round "3"]
[White "Saldana Diaz, Juan"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "0-1"]
[ECO "C48"]
[WhiteElo "2064"]
[BlackElo "2265"]
[PlyCount "64"]
[EventDate "2015.12.12"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Nd4 5. Bc4 Bc5 6. d3 0-0 7. Bg5 h6 8. Bh4 Nxf3+ 9. Qxf3 g5 10. Bg3 d6 11. Nd5 Nxd5 12. Bxd5 Kg7 13. h4 g4 14. Qe2 c6 15. Bb3 a5 16. a4 h5 17. f4 exf4 18. Bxf4 Qf6 19. Qd2 Qxb2 20. Bh6+ Kh7 21. Ke2 g3 22. Raf1 Bg4+ 23. Rf3 Bxf3+ 24. Kxf3 Qf6+ 25. Bf4 Qg6 26. d4 Qg4+ 27. Ke3 Rae8 28. dxc5 f5 29. e5 Rxe5+ 30. Kd3 Re4 31. Rf1 dxc5 32. Kc3 Qg7+ 0-1

[Event "PER-ch"]
[Site "Lima"]
[Date "2015.05.03"]
[Round "7"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Cori Tello, Deysi Estella"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2262"]
[BlackElo "2441"]
[PlyCount "75"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. c3 d6 4. f4 Nf6 5. e5 dxe5 6. fxe5 Nd5 7. Nf3 0-0 8. Bc4 Nb6 9. Bb3 c5 10. dxc5 Qxd1+ 11. Kxd1 N6d7 12. e6 Nxc5 13. exf7+ Kh8 14. Be3 Nxb3 15. axb3 Nc6 16. b4 Bg4 17. Ke2 a6 18. h3 Bxf3+ 19. gxf3 Ne5 20. Nd2 Nxf7 21. Ra5 Nd6 22. Rd5 Rad8 23. Ne4 Nc4 24. Rhd1 Rc8 25. Bc1 Ne5 26. f4 Nc6 27. Nc5 e5 28. Ne6 Rf7 29. Nxg7 Kxg7 30. Rd7 Rcf8 31. Rxf7+ Rxf7 32. fxe5 Nxe5 33. Be3 Nc6 34. Rd5 Rf5 35. Rd7+ Rf7 36. Rd5 Rf5 37. Rd7+ Rf7 38. Rd5 1/2-1/2

[Event "PER-ch"]
[Site "Lima"]
[Date "2015.05.03"]
[Round "8"]
[White "Santiago Vilca, Christian Amilca"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "1/2-1/2"]
[ECO "E97"]
[WhiteElo "1890"]
[BlackElo "2262"]
[PlyCount "98"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 Nd7 11. bxa5 Rxa5 12. Bb4 Ra8 13. a4 Bh6 14. Ne1 f5 15. Nd3 Nf6 16. f3 c5 17. dxc6 Nxc6 18. Kh1 Be6 19. Ba3 Bxc4 20. exf5 gxf5 21. Nb4 Bxe2 22. Nxe2 Nxb4 23. Bxb4 Ra6 24. Ng3 Qd7 25. Qd3 Ne8 26. Qd5+ Kh8 27. a5 Bf4 28. Ne2 Nf6 29. Qd1 Nh5 30. Bc3 Qe7 31. Qe1 Rg8 32. Nxf4 Nxf4 33. g3 Nd5 34. f4 Nxc3 35. Qxc3 Qe6 36. fxe5 dxe5 37. Qf3 f4 38. gxf4 e4 39. Qc3+ Qf6 40. Qxf6+ Rxf6 41. Ra4 Re8 42. Kg2 Rg6+ 43. Kf2 Rh6 44. Re1 Rxh2+ 45. Kg3 Rb2 46. Raxe4 Rxe4 47. Rxe4 Rb5 48. Re7 Rxa5 49. Rxb7 h5 1/2-1/2

[Event "PER-ch"]
[Site "Lima"]
[Date "2015.05.02"]
[Round "6"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Pizzardo, Salvador"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2262"]
[BlackElo "2049"]
[PlyCount "80"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 Nh6 7. dxc5 Bxc5 8. 0-0 Ng4 9. Qe2 0-0 10. b4 Bxf2+ 11. Rxf2 f6 12. h3 Qxf2+ 13. Qxf2 Nxf2 14. Kxf2 fxe5 15. b5 Na5 16. Ba3 Rf7 17. Bb4 b6 18. Bxa5 bxa5 19. Ke3 e4 20. Ne5 exd3 21. Nxf7 Kxf7 22. Nd2 Rb8 23. a4 Bb7 24. Nf3 Kf6 25. Kd4 d2 26. Rd1 e5+ 27. Nxe5 Re8 28. Nd7+ Kg5 29. Nc5 Bc8 30. Rxd2 Kh4 31. Rf2 Re7 32. Rf8 Bxh3 33. gxh3 Kxh3 34. Kxd5 h5 35. Ne4 Kg4 36. c4 h4 37. c5 g5 38. c6 h3 39. Nf2+ Kg3 40. Nxh3 Kxh3 1-0

[Event "PER-ch"]
[Site "Lima"]
[Date "2015.05.02"]
[Round "5"]
[White "Rojas, Steven"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1742"]
[BlackElo "2262"]
[PlyCount "124"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 d5 7. e5 Ng4 8. 0-0 Bc5 9. Qe2 Qh4 10. h3 Nh6 11. Qf3 0-0 12. Be3 Bb6 13. Qf4 Qxf4 14. Bxf4 Nf5 15. Nd2 f6 16. exf6 Rxf6 17. c4 Ba6 18. b4 Nd6 19. Bxd6 cxd6 20. b5 Bb7 21. cxd5 cxb5 22. Bxb5 Bxd5 23. Bc4 Bxc4 24. Nxc4 Bc5 25. Nd2 Re8 26. Nf3 Re2 27. a4 Rf4 28. a5 h6 29. a6 Rb4 30. Ne1 Rd4 31. Nf3 Rc4 32. Ne1 Rc3 33. Rd1 Ra3 34. Nd3 Rxa6 35. Nxc5 dxc5 36. Rfe1 Rxe1+ 37. Rxe1 Rc6 38. Ra1 a6 39. Kf1 c4 40. Ke2 c3 41. Rc1 c2 42. Kd3 Kf7 43. Rxc2 Rxc2 44. Kxc2 Ke6 45. Kc3 Ke5 46. Kc4 Ke4 47. Kc3 a5 48. Kc4 a4 49. Kb4 Kd3 50. g4 Ke2 51. f4 Kf3 52. g5 hxg5 53. fxg5 Kg3 54. Kxa4 Kxh3 55. Kb5 Kg4 56. g6 Kf5 57. Kc4 Kxg6 58. Kd4 Kf5 59. Ke3 Kg4 60. Kf2 Kh3 61. Kg1 Kg3 62. Kh1 g5 0-1

[Event "PER-ch"]
[Site "Lima"]
[Date "2015.05.01"]
[Round "3"]
[White "Celis Sanchez, Carlos"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2070"]
[BlackElo "2262"]
[PlyCount "84"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bg4 6. h3 Bh5 7. g4 Bg6 8. Ne5 e6 9. Nxg6 hxg6 10. Bg2 c6 11. 0-0 Nbd7 12. g5 Nd5 13. Ne4 Be7 14. c4 N5b6 15. b3 f5 16. gxf6 gxf6 17. a4 a6 18. Ba3 Bxa3 19. Rxa3 Qb4 20. Ra1 Rd8 21. Qf3 Qe7 22. Qg3 Nf8 23. Rad1 Nc8 24. Qf4 f5 25. Qe5 Rh4 26. Nc5 Nd6 27. Rfe1 Nf7 28. Qe3 Rd6 29. f4 g5 30. Rf1 Rxf4 31. Rxf4 gxf4 32. Qxf4 Kd8 33. Re1 b6 34. Nxa6 Qg5 35. Qf2 Ng6 36. Kh2 Nf4 37. Bf1 Ng6 38. c5 bxc5 39. Nxc5 Ke7 40. a5 e5 41. a6 Kf8 42. a7 Rd8 1-0

[Event "PER-ch"]
[Site "Lima"]
[Date "2015.05.01"]
[Round "4"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Arroyo Valenzuela, Luigi"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2262"]
[BlackElo "1584"]
[PlyCount "61"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 dxe5 6. fxe5 c5 7. d5 g6 8. Nf3 Bg7 9. Bd3 N8d7 10. Qe2 0-0 11. 0-0 f6 12. e6 Ne5 13. Nxe5 fxe5 14. Rxf8+ Qxf8 15. Nc3 Bxe6 16. dxe6 Qf6 17. Be4 Rb8 18. Be3 Kh8 19. Bxc5 Qxe6 20. b3 Rc8 21. Be3 Rc7 22. h3 Nd7 23. Rd1 b6 24. Qg4 Qxg4 25. hxg4 Kg8 26. Nb5 Nf6 27. Nxc7 Nxe4 28. Ne6 Nd6 29. Nxg7 Kxg7 30. c5 bxc5 31. Bxc5 1-0

[Event "PER-ch"]
[Site "Lima"]
[Date "2015.04.30"]
[Round "1"]
[White "Delgado Romero, Marco"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1698"]
[BlackElo "2262"]
[PlyCount "150"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bf4 0-0 6. e3 Nbd7 7. Bd3 dxc4 8. Bxc4 a6 9. 0-0 b5 10. Bd3 c5 11. Rc1 Bb7 12. Bg3 Qb6 13. Re1 Bxf3 14. Qxf3 cxd4 15. exd4 Qxd4 16. a3 Qg4 17. Be2 Qxf3 18. Bxf3 Ra7 19. b4 Nb6 20. Red1 Nc4 21. Nb1 a5 22. Bc6 axb4 23. axb4 Bxb4 24. Bxb5 Nb6 25. h3 Ne4 26. Be5 Ra5 27. Rd4 Rxb5 28. Rxe4 Rc8 29. Rxc8+ Nxc8 30. Nc3 Bxc3 31. Bxc3 Rc5 32. Bb4 Rc1+ 33. Re1 Rc4 34. Ba3 Rd4 35. Rc1 Rd8 36. Bc5 h6 37. f3 Rd7 38. Kf2 Rc7 39. Ba3 Rxc1 40. Bxc1 f6 41. Ke3 Kf7 42. Kd4 e5+ 43. Kc5 Ke6 44. g4 g5 45. Kc4 Ne7 46. Kd3 Kd5 47. Ba3 Ng6 48. Ke3 Nf4 49. Bf8 h5 50. Be7 Ke6 51. Bd8 h4 52. Ba5 Nxh3 53. Be1 Nf4 54. Bf2 Kd5 55. Bg1 Ne6 56. Bf2 Nc5 57. Be1 Nb7 58. Bb4 Nd6 59. Kf2 e4 60. Bc3 exf3 61. Kxf3 Ke6 62. Kg2 Nc4 63. Kh3 Ne3 64. Bd4 Nc4 65. Bc3 Ne5 66. Ba5 Nf7 67. Bc3 Nh6 68. Bd2 Ng8 69. Bc1 Ne7 70. Kg2 Ng6 71. Kh3 Nf4+ 72. Bxf4 gxf4 73. Kxh4 Ke5 74. Kh3 Ke4 75. Kg2 f3+ 0-1

[Event "PER-ch"]
[Site "Lima"]
[Date "2015.04.30"]
[Round "2"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Risco Alarcon, Julio"]
[Result "1/2-1/2"]
[ECO "C15"]
[WhiteElo "2262"]
[BlackElo "1921"]
[PlyCount "88"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd2 dxe4 5. Qg4 Nf6 6. Qxg7 Rg8 7. Qh6 Qxd4 8. Nge2 Qe5 9. h3 Rg6 10. Qf4 Nc6 11. Qxe5 Nxe5 12. Nxe4 Bxd2+ 13. Nxd2 Bd7 14. Nd4 0-0-0 15. N2f3 Nxf3+ 16. Nxf3 Be8 17. Rg1 Rd5 18. Rd1 Rc5 19. c3 e5 20. Nd2 Bc6 21. g3 Ne4 22. Bg2 Nxd2 23. Bxc6 Rcxc6 24. Rxd2 Rgd6 25. Re2 Ra6 26. a3 Rab6 27. Kf1 Rd1+ 28. Kg2 Rxg1+ 29. Kxg1 f6 30. f4 exf4 31. gxf4 Kd7 32. Kf2 Re6 33. Rd2+ Ke7 34. Rd4 Rb6 35. Rd2 Rd6 36. Re2+ Re6 37. Rd2 Rd6 38. Rxd6 Kxd6 39. Ke3 Kd5 40. Kd3 b5 41. b3 f5 42. c4+ bxc4+ 43. bxc4+ Kd6 44. Kd4 c5+ 1/2-1/2

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.05"]
[Round "2"]
[White "Caro Bermudes, Erick"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2200"]
[BlackElo "2302"]
[PlyCount "77"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. d3 b5 7. Bb3 0-0 8. Nc3 d6 9. a3 Bg4 10. Ne2 d5 11. h3 Bxf3 12. gxf3 Na5 13. Ba2 c6 14. Ng3 g6 15. Qe1 Nb7 16. b4 Re8 17. Bb2 Bf8 18. Rd1 a5 19. Bb3 Bg7 20. Qc3 Qb6 21. Rfe1 Rac8 22. Qd2 Rcd8 23. Qc1 c5 24. exd5 Nxd5 25. Bxd5 Rxd5 26. bxc5 Nxc5 27. d4 Na4 28. Ba1 Qc6 29. dxe5 Nb6 30. f4 Red8 31. Rxd5 Qxd5 32. f5 Re8 33. e6 fxe6 34. f6 Bf8 35. Ne4 Rc8 36. Ng5 Rc7 37. Nxe6 Rc5 38. Re5 Qc6 39. f7+ 1-0

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.05"]
[Round "1"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Almeida Quintana, Omar"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2302"]
[BlackElo "2489"]
[PlyCount "120"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c3 d6 4. f4 Nf6 5. e5 Nd5 6. Nf3 0-0 7. Bc4 Nb6 8. Bb3 a5 9. a4 Na6 10. Be3 c6 11. 0-0 Nd5 12. Bxd5 cxd5 13. Qb3 Nc7 14. Na3 f6 15. Nb5 Be6 16. exd6 exd6 17. f5 Bxf5 18. Bf4 Ra6 19. Nxc7 Qxc7 20. Qxd5+ Qf7 21. Qxf7+ Kxf7 22. d5 Rb6 23. Nd4 Bd7 24. c4 Rxb2 25. Bxd6 Re8 26. Rab1 f5 27. Nf3 Ree2 28. Ba3 Rxg2+ 29. Kh1 Rxb1 30. Rxb1 Ra2 31. Rxb7 Rxa3 32. Rxd7+ Kf6 33. Ng5 Kxg5 34. Rxg7 Rxa4 35. c5 Rc4 36. c6 Kf6 37. Rxh7 Ke5 38. Ra7 Kxd5 39. Rxa5+ Ke4 40. Ra6 g5 41. c7 Rxc7 42. Ra4+ Kf3 43. Ra3+ Kg4 44. Rg3+ Kf4 45. Kg2 Rc2+ 46. Kg1 g4 47. Rb3 Re2 48. Ra3 Re3 49. Ra1 Kf3 50. Rf1+ Ke4 51. Ra1 f4 52. Kf2 Rf3+ 53. Kg2 Rc3 54. Re1+ Kd3 55. Re7 Rc2+ 56. Kg1 f3 57. Re8 Rg2+ 58. Kh1 Re2 59. Rd8+ Ke3 60. Rd1 Kf2 0-1

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.05"]
[Round "3"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Obando Guzman, Soren Federico"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2302"]
[BlackElo "1751"]
[PlyCount "57"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 a6 6. Bc4 b5 7. Bb3 Bb7 8. a3 d6 9. 0-0 Nf6 10. Qe2 Nbd7 11. Rd1 Qb8 12. Nd4 Nc5 13. Ba2 Be7 14. f3 0-0 15. g4 Rc8 16. Be3 Nfd7 17. Rac1 Nb6 18. b4 Nca4 19. Nxa4 Nxa4 20. Nxe6 Nc3 21. Rxc3 Rxc3 22. Bd4 Rc4 23. Bxc4 bxc4 24. Nxg7 Qc7 25. Qe3 d5 26. Nf5 Kf8 27. exd5 Bxd5 28. Nxe7 Qxe7 29. Bc5 1-0

[Event "Arequipa GP Peru Sur"]
[Site "Arequipa"]
[Date "2013.06.29"]
[Round "5"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Flores, Guillermo"]
[Result "1-0"]
[ECO "E80"]
[WhiteElo "2304"]
[BlackElo "2077"]
[PlyCount "91"]
[EventDate "2013.06.27"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. e4 Bg7 5. f3 Nbd7 6. Be3 e5 7. Nge2 exd4 8. Nxd4 0-0 9. Ndb5 a6 10. Na3 Qe7 11. Qd2 Nc5 12. Be2 Re8 13. 0-0 Be6 14. Nc2 Rad8 15. b4 Ncd7 16. Bg5 c6 17. Nd4 Nb6 18. Nxe6 Qxe6 19. Rac1 Bf8 20. Qd4 Nbd7 21. Rfd1 Be7 22. Qf2 Nxe4 23. Nxe4 Bxg5 24. Nxg5 Qxe2 25. Qxe2 Rxe2 26. Rxd6 Rxa2 27. Ne4 Kf8 28. Rcd1 Ke7 29. Nc5 Nxc5 30. Rxd8 Ne6 31. R8d2 Rxd2 32. Rxd2 c5 33. bxc5 Nxc5 34. Kf2 a5 35. Ke3 a4 36. Rd5 b6 37. Kd4 f6 38. Kc3 h5 39. Kb4 h4 40. Rxc5 bxc5+ 41. Kxa4 g5 42. Kb5 Kd6 43. g3 f5 44. f4 gxf4 45. gxf4 h3 46. Kb6 1-0

[Event "Arequipa GP Peru Sur"]
[Site "Arequipa"]
[Date "2013.06.28"]
[Round "4"]
[White "Martinez Alcantara, Jose Eduardo"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "2250"]
[BlackElo "2304"]
[PlyCount "139"]
[EventDate "2013.06.27"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 e6 7. Bd3 c5 8. 0-0 cxd4 9. Nxd4 Bc5 10. c3 Bxd4 11. cxd4 0-0 12. Bg5 Qa5 13. Qd2 Qxd2 14. Bxd2 Nb6 15. Rac1 Bd7 16. Bb4 Rfc8 17. Bd6 Bc6 18. f3 Rd8 19. Be5 Nfd5 20. Ne2 f6 21. Bg3 Nb4 22. Bb1 Rac8 23. Nf4 Bd5 24. a3 Nc6 25. Nxd5 Nxd5 26. Bf2 Rc7 27. Rfe1 Kf7 28. Ba2 Rcd7 29. g3 Rd6 30. b4 Nc7 31. f4 f5 32. Rc5 Nd5 33. Rec1 Nce7 34. b5 R8d7 35. Kg2 Nf6 36. Rc7 Ned5 37. Rc8 Ne4 38. Bg1 Nb6 39. Rb8 Na4 40. d5 exd5 41. Bd4 Nb6 42. Be5 Re6 43. Rh8 h6 44. Bb3 Re8 45. Rxe8 Kxe8 46. a4 Nd2 47. Bc2 Nbc4 48. Bd4 Ne4 49. Bd1 b6 50. Bh5+ Kf8 51. Bg6 Ned6 52. Re1 Ne4 53. Bxf5 Re7 54. Bg4 Nf6 55. Be6 Nd6 56. f5 Nxf5 57. Bc3 Ne4 58. Bb4 Nc5 59. Bxf5 Rxe1 60. Bxe1 Nxa4 61. Be6 d4 62. Bb4+ Ke8 63. Kf3 Nc5 64. Bxc5 bxc5 65. Ke4 Ke7 66. Kd5 c4 67. Bf5 Kf6 68. Be4 Kg5 69. Kxd4 Kg4 70. Bg2 1-0

[Event "Arequipa GP Peru Sur"]
[Site "Arequipa"]
[Date "2013.06.28"]
[Round "3"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Salazar, Carlos"]
[Result "1-0"]
[ECO "E58"]
[WhiteElo "2304"]
[BlackElo "2162"]
[PlyCount "85"]
[EventDate "2013.06.27"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 d5 7. 0-0 0-0 8. a3 Bxc3 9. bxc3 Qc7 10. dxc5 dxc4 11. Bxc4 Na5 12. Bd3 Qxc5 13. c4 e5 14. Bb2 e4 15. Bxf6 exd3 16. Bc3 Rd8 17. Bb4 Qc7 18. Bxa5 Qxa5 19. Nd4 Qc3 20. Qc1 Qxc1 21. Raxc1 Bg4 22. f3 Bh5 23. Rfd1 Bg6 24. Kf2 Rac8 25. Ke1 Rc5 26. Kd2 Rdc8 27. Rc3 h5 28. Rb1 b6 29. h4 Rxc4 30. Rbc1 R4c5 31. Nb3 Rxc3 32. Rxc3 Rxc3 33. Kxc3 Kf8 34. Nd4 Ke8 35. Nc6 a5 36. Ne5 Kd8 37. e4 Kc7 38. Kxd3 b5 39. Kd4 Kb6 40. f4 b4 41. axb4 axb4 42. Nxg6 fxg6 43. Kc4 1-0

[Event "Arequipa GP Peru Sur"]
[Site "Arequipa"]
[Date "2013.06.27"]
[Round "1"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Lazaro Cuevas, Ronald Anthony"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2304"]
[BlackElo "1706"]
[PlyCount "39"]
[EventDate "2013.06.27"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. f3 dxe4 4. fxe4 e5 5. Nf3 exd4 6. Bc4 Bb4+ 7. c3 dxc3 8. Bxf7+ Ke7 9. Qxd8+ Kxd8 10. Nxc3 Bc5 11. Bg5+ Be7 12. 0-0-0+ Kc7 13. Bf4+ Kb6 14. Ne5 a5 15. Na4+ Ka6 16. Be3 Nh6 17. Kb1 Nxf7 18. Nxf7 Rf8 19. Nb6 Bg4 20. Nxa8 1-0

[Event "Arequipa GP Peru Sur"]
[Site "Arequipa"]
[Date "2013.06.27"]
[Round "2"]
[White "Sanchez Zambrano, Vanessa"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "1927"]
[BlackElo "2304"]
[PlyCount "66"]
[EventDate "2013.06.27"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "PER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. e3 0-0 6. Bd3 dxc4 7. Bxc4 c5 8. Nge2 Qc7 9. Bd3 Nc6 10. a3 Bxc3+ 11. bxc3 e5 12. 0-0 cxd4 13. cxd4 exd4 14. exd4 Nd5 15. Qc2 h6 16. Bh7+ Kh8 17. Be4 Be6 18. Rb1 Rac8 19. Bd2 Qd7 20. Qb2 Nb6 21. Bf4 Bd5 22. Rfe1 Rfe8 23. Bd3 Ne7 24. Qd2 Nc4 25. Qb4 Nb6 26. Ng3 Bc4 27. Be4 Qxd4+ 28. Kh1 Ned5 29. Qd6 Rc6 30. Nf5 Rxd6 31. Nxd4 Nxf4 32. Nf5 Rdd8 33. Bxb7 Bd3 0-1

[Event "Lima GP IRT op"]
[Site "Lima"]
[Date "2013.??.??"]
[Round "8"]
[White "Celis Sanchez, Carlos"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "0-1"]
[ECO "C65"]
[WhiteElo "2120"]
[BlackElo "2314"]
[PlyCount "44"]
[EventDate "2013.08.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 d6 5. d4 Bd7 6. Re1 Be7 7. c4 a6 8. Bxc6 Bxc6 9. Nc3 0-0 10. b3 Re8 11. Bb2 exd4 12. Nxd4 Bf8 13. Qf3 Bd7 14. h3 c6 15. Rad1 Qa5 16. Nc2 Be6 17. b4 Qh5 18. Qxh5 Nxh5 19. Ne3 Rad8 20. Rd4 f6 21. Red1 Rc8 22. R4d2 f5 0-1

[Event "Lima GP IRT op"]
[Site "Lima"]
[Date "2013.??.??"]
[Round "2"]
[White "Felix Vega, Aurora Edith"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2013"]
[BlackElo "2314"]
[PlyCount "83"]
[EventDate "2013.08.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 d6 5. d4 Bd7 6. Re1 Be7 7. d5 Nb8 8. Bxd7+ Nbxd7 9. Nbd2 0-0 10. Nf1 Ne8 11. Ng3 g6 12. Bh6 Ng7 13. c4 a5 14. Qc2 c6 15. Rad1 Qc7 16. b3 c5 17. Nd2 f6 18. Ndf1 Rf7 19. Ne3 Bf8 20. f3 Ne8 21. Bxf8 Rxf8 22. h4 Qd8 23. h5 Ng7 24. Kf2 Kf7 25. Rh1 a4 26. Rb1 axb3 27. Rxb3 Ra7 28. h6 Ne8 29. Rhb1 Qa8 30. R1b2 Nc7 31. Ne2 Ke7 32. Nc3 Rf7 33. Qb1 b6 34. g4 Kf8 35. Rxb6 Nxb6 36. Rxb6 Ne8 37. Rb8 Qxb8 38. Qxb8 Rfb7 39. Qc8 Rc7 40. Qb8 Rcb7 41. Qc8 Rc7 42. Qb8 1/2-1/2

[Event "Lima GP IRT op"]
[Site "Lima"]
[Date "2013.??.??"]
[Round "5"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Arias Gaviria, Mario Alexis"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "2314"]
[BlackElo "2159"]
[PlyCount "68"]
[EventDate "2013.08.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Qd2 b5 8. 0-0-0 Bb7 9. Nf5 Qa5 10. f3 h6 11. Bh4 g6 12. Ne3 Bg7 13. Kb1 Rc8 14. Bd3 Qb4 15. a3 Qc5 16. Bf2 Qc7 17. f4 Nc5 18. e5 dxe5 19. fxe5 Nfe4 20. Bxe4 Nxe4 21. Nxe4 Bxe4 22. Bg3 Qc6 23. Ka1 0-0 24. c3 a5 25. Nd5 Rfe8 26. Rhe1 Bf5 27. Qe3 Be6 28. Nf4 Bb3 29. Rd3 e6 30. Rd6 Qc7 31. Ne2 Bd5 32. Nd4 Qc4 33. b3 Qxc3+ 34. Qxc3 Rxc3 0-1

[Event "Lima GP IRT op"]
[Site "Lima"]
[Date "2013.??.??"]
[Round "7"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Carbajal, Augusto"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2314"]
[BlackElo "2193"]
[PlyCount "24"]
[EventDate "2013.08.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. c4 Nc6 7. d5 Na5 8. Qa4 c5 9. Bd2 b6 10. Ne1 a6 11. Bxa5 bxa5 12. Nc3 Rb8 1/2-1/2

[Event "Lima GP IRT op"]
[Site "Lima"]
[Date "2013.??.??"]
[Round "9"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Puppi Lazo, Jorge Luis"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2314"]
[BlackElo "1948"]
[PlyCount "78"]
[EventDate "2013.08.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 g6 6. e4 d6 7. Be2 Bg7 8. Be3 0-0 9. 0-0 Bd7 10. Qd2 Rc8 11. Nxc6 Bxc6 12. f3 a6 13. b4 Bd7 14. Rac1 Qc7 15. a4 b6 16. Nd5 Nxd5 17. cxd5 Qb7 18. b5 a5 19. Rc6 Bxc6 20. bxc6 Qc7 21. Rb1 Rb8 22. Bc4 f5 23. Kh1 fxe4 24. fxe4 Kh8 25. Qe1 e6 26. Qg1 exd5 27. Bxd5 h5 28. h3 Be5 29. Rxb6 Rxb6 30. Bxb6 Qc8 31. Qc1 Kh7 32. Qc4 Rf3 33. Be6 Qf8 34. gxf3 Qxf3+ 35. Kg1 Qg3+ 36. Kf1 Qf3+ 37. Bf2 Bg3 38. Qe2 Qh1+ 39. Bg1 d5 1-0

[Event "Lima GP IRT op"]
[Site "Lima"]
[Date "2013.??.??"]
[Round "3"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Serrano Nagamine, David Antonio"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2314"]
[BlackElo "2039"]
[PlyCount "116"]
[EventDate "2013.08.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 g6 6. Nc3 Bg7 7. Be3 Be6 8. Nf3 0-0 9. d5 Bg4 10. h3 Bxf3 11. Qxf3 dxe5 12. 0-0-0 N8d7 13. f5 Qc8 14. g4 Rd8 15. Be2 c6 16. fxg6 hxg6 17. Rhf1 f6 18. dxc6 Qxc6 19. c5 e4 20. Qxe4 Qxe4 21. Nxe4 Na4 22. Rxd7 Rxd7 23. Bb5 Nxc5 24. Nxc5 Rc7 25. Kb1 e5 26. Bd3 Kf7 27. Be4 Rb8 28. Bd5+ Ke8 29. Ne4 Rd8 30. Bb3 Rd3 31. Re1 b6 32. Bc2 Rd8 33. Rf1 Kf7 34. Ng5+ Ke7 35. Nf3 Rh8 36. h4 Rxc2 37. Kxc2 e4 38. Nd2 Rxh4 39. Rf4 f5 40. gxf5 Rxf4 41. Bxf4 gxf5 42. b3 Ke6 43. Bb8 a6 44. Ba7 b5 45. Kd1 Kd5 46. Bb6 f4 47. Ke2 f3+ 48. Kd1 Bd4 49. Bc7 Bc5 50. Bf4 Kd4 51. Kc2 e3 52. Nxf3+ Ke4 53. Ne1 a5 54. Nd3 Bb6 55. a3 Bd8 56. Bg3 a4 57. b4 Bf6 58. Be1 Kd5 1-0

[Event "Lima GP IRT op"]
[Site "Lima"]
[Date "2013.??.??"]
[Round "1"]
[White "Oswaldo Valentin, Requejo Cotrin"]
[Black "Vela, Amrafel"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2314"]
[BlackElo "1717"]
[PlyCount "41"]
[EventDate "2013.08.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. f3 e6 4. Be3 dxe4 5. Nd2 exf3 6. Qxf3 Nf6 7. Bc4 Nd5 8. Nh3 Nxe3 9. Qxe3 Qh4+ 10. Nf2 Be7 11. Nf3 Qh5 12. Ne5 Qg5 13. Qf3 Qf6 14. Qe2 Qf4 15. c3 0-0 16. g3 Qh6 17. 0-0 g6 18. Nfg4 Qg7 19. Nxf7 Rxf7 20. Bxe6 Bxe6 21. Qxe6 1-0

[Event "Lima GP IRT op"]
[Site "Lima"]
[Date "2013.??.??"]
[Round "6"]
[White "Robbiano Taboada, Carlos Alberto"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "1/2-1/2"]
[ECO "C56"]
[WhiteElo "2141"]
[BlackElo "2314"]
[PlyCount "116"]
[EventDate "2013.08.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Nf3 Nc6 4. Bc4 Bc5 5. c3 d6 6. cxd4 Bb6 7. h3 Nf6 8. Nc3 h6 9. 0-0 0-0 10. e5 dxe5 11. dxe5 Qxd1 12. Rxd1 Nd7 13. e6 Nde5 14. Nxe5 Nxe5 15. exf7+ Kh7 16. Bb3 Nxf7 17. Nd5 Bf5 18. Bf4 Rae8 19. Nxb6 cxb6 20. Re1 Nd8 21. Bd6 Rh8 22. g4 Bg6 23. f4 Bd3 24. Rad1 Rxe1+ 25. Rxe1 Nc6 26. Rd1 Be4 27. f5 Rd8 28. Kf2 Na5 29. Be6 b5 30. Rd4 Nc6 31. Rd2 Na5 32. Bb4 Rxd2+ 33. Bxd2 Nc6 34. Ke3 Bb1 35. Bc3 b4 36. Bd4 a5 37. h4 a4 38. g5 hxg5 39. hxg5 a3 40. bxa3 bxa3 41. Bc5 Nd8 42. Bd7 Bxa2 43. Bxa3 g6 44. Be7 Nf7 45. Be6 Bxe6 46. fxe6 Ne5 47. Bc5 Kg8 48. Ke4 Nc4 49. Kd5 Nd2 50. Be3 Nf3 51. Ke4 Ne1 52. Bc5 b5 53. Bd6 Kg7 54. Be7 Nc2 55. Kd3 Ne1+ 56. Ke2 Ng2 57. Kf3 Ne1+ 58. Ke4 Nc2 1/2-1/2

[Event "Lima GP IRT op"]
[Site "Lima"]
[Date "2013.??.??"]
[Round "4"]
[White "Rosales, Pierina"]
[Black "Oswaldo Valentin, Requejo Cotrin"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1863"]
[BlackElo "2314"]
[PlyCount "106"]
[EventDate "2013.08.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. Bf4 dxc4 6. e3 Nd5 7. Bxc4 Nxf4 8. exf4 Nb6 9. Bb3 c5 10. dxc5 Qxd1+ 11. Rxd1 Bxc5 12. 0-0 0-0 13. Rd3 a5 14. a3 a4 15. Ba2 Bd7 16. Ne5 Bc6 17. h3 Be7 18. Rfd1 g6 19. g4 Ra5 20. R1d2 Rc8 21. Nxc6 bxc6 22. Kg2 Rb8 23. Kf3 Kg7 24. Ne2 Nd5 25. Nd4 Rb6 26. Bxd5 exd5 27. Re2 Ra7 28. Kg2 Rab7 29. Rdd2 Bf6 30. g5 Bxd4 31. Rxd4 Rxb2 32. Rxb2 Rxb2 33. Rxa4 Rb3 34. f3 c5 35. Ra5 Rc3 36. Kf2 Kf8 37. Ra7 d4 38. Rc7 Rc2+ 39. Ke1 Ke8 40. a4 c4 41. a5 Kd8 42. Rc5 Ke7 43. a6 c3 44. Rd5 Ra2 45. Rxd4 Ra1+ 46. Rd1 Rxa6 47. Rc1 Rc6 48. Rc2 Kd6 49. Kf2 Kd5 50. Ke3 Kc4 51. Rc1 Kb3 52. Rb1+ Ka2 53. Rb7 c2 0-1

