[Event "Piura op 7th"]
[Site "Piura"]
[Date "2013.09.22"]
[Round "7"]
[White "Olvera Urena, Yasser"]
[Black "Saavedra Valverde, Luis"]
[Result "0-1"]
[ECO "B52"]
[WhiteElo "1984"]
[BlackElo "1921"]
[PlyCount "36"]
[EventDate "2013.09.20"]
[EventType "swiss"]
[EventRounds "7"]
[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. Bb5+ Bd7 4. Bxd7+ Qxd7 5. 0-0 Nf6 6. Qe2 e6 7. Re1 Qc6 8. Nc3 e5 9. d3 h6 10. Nh4 g6 11. Qf3 Bg7 12. b3 Nbd7 13. Nd5 Nxd5 14. exd5 Qc8 15. g3 0-0 16. Ng2 e4 17. Qxe4 Bxa1 18. Bxh6 Bg7 0-1

[Event "Piura op 7th"]
[Site "Piura"]
[Date "2013.09.22"]
[Round "6"]
[White "Terry, Renato"]
[Black "Olvera Urena, Yasser"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2436"]
[BlackElo "1984"]
[PlyCount "47"]
[EventDate "2013.09.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "PER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c3 Bg7 5. 0-0 e5 6. Na3 d5 7. d3 Nge7 8. e4 d4 9. cxd4 cxd4 10. Bd2 0-0 11. b4 a6 12. b5 axb5 13. Nxb5 h6 14. a4 Be6 15. Ne1 Qd7 16. f4 f5 17. Rc1 Kh7 18. Rf2 Ra6 19. fxe5 Rfa8 20. a5 Bxe5 21. Nf3 Bg7 22. h4 Rf8 23. Qf1 b6 24. h5 1-0

[Event "Piura op 7th"]
[Site "Piura"]
[Date "2013.09.21"]
[Round "5"]
[White "Olvera Urena, Yasser"]
[Black "Huamanchumo Neira, Mario"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1984"]
[BlackElo "1853"]
[PlyCount "16"]
[EventDate "2013.09.20"]
[EventType "swiss"]
[EventRounds "7"]
[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 e6 3. d3 Nc6 4. g3 d6 5. Bg2 Be7 6. 0-0 Nf6 7. h3 Qc7 8. c3 0-0 1-0

[Event "Piura op 7th"]
[Site "Piura"]
[Date "2013.09.20"]
[Round "2"]
[White "Castaneda, Carlos"]
[Black "Olvera Urena, Yasser"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2180"]
[BlackElo "1984"]
[PlyCount "44"]
[EventDate "2013.09.20"]
[EventType "swiss"]
[EventRounds "7"]
[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 e6 3. g3 b6 4. Bg2 Bb7 5. 0-0 Be7 6. c4 c5 7. d5 exd5 8. Nh4 0-0 9. cxd5 d6 10. e4 g6 11. Nc3 a6 12. a4 Nh5 13. Nf5 Bf6 14. Nh6+ Kh8 15. f4 Ng7 16. e5 Be7 17. f5 Nxf5 18. Rxf5 gxf5 19. Qh5 Nd7 20. exd6 Bxd6 21. Qxf5 Qf6 22. Qxd7 Qd4+ 1-0

[Event "Piura op 7th"]
[Site "Piura"]
[Date "2013.09.20"]
[Round "1"]
[White "Olvera Urena, Yasser"]
[Black "Briceno Portilla, Paul Anderzon"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1984"]
[PlyCount "33"]
[EventDate "2013.09.20"]
[EventType "swiss"]
[EventRounds "7"]
[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 Nc6 3. Bb5 Qc7 4. Nc3 e6 5. 0-0 Nf6 6. Re1 Ng4 7. Bxc6 Qxc6 8. d4 Be7 9. d5 exd5 10. exd5 Qb6 11. d6 0-0 12. Nd5 Qa5 13. Bd2 Qb5 14. dxe7 Nf6 15. Nxf6+ gxf6 16. exf8Q+ Kxf8 17. Bh6+ 1-0

[Event "Duran zt 2.3.5"]
[Site "Duran"]
[Date "2012.03.10"]
[Round "8"]
[White "Reinozo Trelles, Eduardo"]
[Black "Olvera Urena, Yasser"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1920"]
[BlackElo "1865"]
[PlyCount "57"]
[EventDate "2012.03.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 Be7 4. g3 Nf6 5. Bg2 Nc6 6. 0-0 0-0 7. Re1 d6 8. Nbd2 Rb8 9. Nf1 Nd7 10. h4 b5 11. N1h2 Nd4 12. Ng5 b4 13. c3 bxc3 14. bxc3 Nb5 15. Bd2 Bf6 16. Rc1 Ne5 17. Qe2 c4 18. dxc4 Na3 19. Bf4 Nexc4 20. Red1 Rb2 21. Qd3 Qb6 22. Ng4 Rxa2 23. Nxh7 Kxh7 24. e5+ g6 25. Nxf6+ Kg7 26. Ng4 dxe5 27. Bh6+ Kg8 28. Bxf8 Kxf8 29. Qd8+ 1-0

[Event "Duran zt 2.3.5"]
[Site "Duran"]
[Date "2012.03.09"]
[Round "7"]
[White "Olvera Urena, Yasser"]
[Black "Meza Ponce, Jeison"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1865"]
[BlackElo "2232"]
[PlyCount "84"]
[EventDate "2012.03.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. f4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 Nc6 5. 0-0 e6 6. e4 Nge7 7. c3 0-0 8. Na3 h5 9. Nc2 d5 10. d3 b6 11. Rb1 Ba6 12. e5 Rb8 13. Re1 c4 14. d4 b5 15. a3 Nf5 16. g4 hxg4 17. Ng5 g3 18. h3 Bh6 19. Ne3 Nxe3 20. Bxe3 Ne7 21. Qg4 Bxg5 22. fxg5 Nf5 23. Bf4 Kg7 24. Bxg3 Rh8 25. Kf2 Bc8 26. h4 a5 27. Rh1 Rh5 28. Qf4 b4 29. Bf3 Rh8 30. Qc1 Qb6 31. Qc2 Bd7 32. Bg4 Nxd4 33. cxd4 Qxd4+ 34. Kf3 bxa3 35. bxa3 Rb3+ 36. Rxb3 cxb3 37. Qe2 Rc8 38. Bf2 Rc3+ 39. Kg2 Qf4 40. Rh3 Rc2 41. Qf3 Qxf3+ 42. Bxf3 b2 0-1

[Event "Duran zt 2.3.5"]
[Site "Duran"]
[Date "2012.03.08"]
[Round "6"]
[White "Matoewi, Roger"]
[Black "Olvera Urena, Yasser"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2128"]
[BlackElo "1865"]
[PlyCount "88"]
[EventDate "2012.03.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e5 7. Nb3 Be6 8. Be2 Be7 9. 0-0 0-0 10. Be3 Nc6 11. a5 Rc8 12. Bb6 Qd7 13. Bf3 Nb4 14. Re1 Bd8 15. Be3 Bg4 16. Be2 Be6 17. Bf3 Bg4 18. Rc1 Bxf3 19. Qxf3 Qg4 20. Qxg4 Nxg4 21. Bd2 Be7 22. Nd5 Nxd5 23. exd5 Rc4 24. Bc3 f5 25. Rcd1 Nf6 26. f3 Rfc8 27. Re2 Bd8 28. Rdd2 Nd7 29. Rd1 Ra4 30. h3 Nc5 31. g4 Nxb3 32. cxb3 Ra2 33. Rg2 fxg4 34. Rxg4 Bxa5 35. b4 Bb6+ 36. Kh1 Rf8 37. Rf1 a5 38. b5 Bd4 39. Rxd4 exd4 40. Bxd4 Rf5 41. Re1 Kf7 42. Rd1 Rxf3 43. Kg2 Rf5 44. b6 g6 0-1

[Event "Duran zt 2.3.5"]
[Site "Duran"]
[Date "2012.03.08"]
[Round "5"]
[White "Olvera Urena, Yasser"]
[Black "Winter Roach, Alex"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1865"]
[BlackElo "2075"]
[PlyCount "89"]
[EventDate "2012.03.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. Qe4 Nf6 10. Qe2 Nd5 11. Qe4 Nb6 12. Bd3 Qe6 13. b3 Bb4+ 14. Bd2 Bxd2+ 15. Nxd2 Qh6 16. Qg4 d5 17. exd6 cxd6 18. Qe4+ Qe6 19. 0-0-0 Qxe4 20. Nxe4 0-0-0 21. Ng5 Rhf8 22. Nxh7 Rfe8 23. Ng5 Re7 24. Rhe1 Rde8 25. Kd2 Kd8 26. Rxe7 Rxe7 27. Re1 Rxe1 28. Kxe1 Ke7 29. Kd2 Bc8 30. Ke3 f6 31. Nf3 d5 32. c5 Na8 33. Nd4 Bd7 34. Ba6 Nc7 35. Bb7 a6 36. Bxc6 Bc8 37. b4 g5 38. a4 f5 39. g3 Kf6 40. b5 axb5 41. axb5 Ke5 42. Nf3+ Kf6 43. Kd4 f4 44. b6 Ne6+ 45. Kxd5 1-0

[Event "Guayaquil zt 2.3.5"]
[Site "Guayaquil"]
[Date "2012.03.06"]
[Round "3"]
[White "Croes, Octavio"]
[Black "Olvera Urena, Yasser"]
[Result "1/2-1/2"]
[ECO "A83"]
[WhiteElo "1916"]
[BlackElo "1865"]
[PlyCount "66"]
[EventDate "2012.03.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 e6 4. Nbd2 Be7 5. Bxf6 Bxf6 6. e4 fxe4 7. Nxe4 b6 8. Bd3 Bb7 9. c3 Nc6 10. Qd2 Qe7 11. 0-0-0 0-0-0 12. Rhe1 Rdf8 13. Bb5 a6 14. Ba4 Na5 15. Qd3 Qd8 16. Ne5 b5 17. Bc2 d6 18. Nf3 Bd5 19. b3 g5 20. Nfd2 g4 21. a4 Bc6 22. b4 Nb7 23. Kb2 Bg7 24. Qe2 h5 25. Bd3 bxa4 26. Bxa6 Kb8 27. Ra1 Rf7 28. Bb5 Qd7 29. Bxc6 Qxc6 30. b5 Qd5 31. Rxa4 Rhf8 32. Nb3 Rd7 33. f3 Rg8 1/2-1/2

[Event "Guayaquil zt 2.3.5"]
[Site "Guayaquil"]
[Date "2012.03.06"]
[Round "2"]
[White "Olvera Urena, Yasser"]
[Black "Treu, Auke"]
[Result "1/2-1/2"]
[ECO "C14"]
[WhiteElo "1865"]
[BlackElo "2121"]
[PlyCount "63"]
[EventDate "2012.03.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 a6 8. Qd2 c5 9. Nf3 Nc6 10. dxc5 Nxc5 11. Nd4 f6 12. 0-0-0 0-0 13. exf6 Qxf6 14. g3 Nxd4 15. Qxd4 Qxd4 16. Rxd4 b5 17. Bg2 Bb7 18. Re1 Rae8 19. b4 Nd7 20. Bh3 Kf7 21. Rd2 Nb6 22. Rde2 Bc8 23. Kb2 Bd7 24. Kb3 g6 25. Nd1 Re7 26. Nb2 Rfe8 27. Nd3 Nc4 28. Ne5+ Nxe5 29. fxe5 Rc8 30. Re3 Kg7 31. Rc3 Rc4 32. Rxc4 1/2-1/2

[Event "Guayaquil zt 2.3.5"]
[Site "Guayaquil"]
[Date "2012.03.05"]
[Round "1"]
[White "Martinez Reyes, Pedro Ramon"]
[Black "Olvera Urena, Yasser"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "2200"]
[BlackElo "1865"]
[PlyCount "35"]
[EventDate "2012.03.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. 0-0 Nc6 6. c3 g6 7. d4 Bg7 8. Re1 h6 9. d5 Na5 10. Qe2 b6 11. e5 0-0-0 12. b4 Nb7 13. Qa6 cxb4 14. cxb4 dxe5 15. Bb2 f6 16. Qxa7 Qxd5 17. Na3 Nd6 18. Rac1+ 1-0

[Event "Guayaquil Feda 176 op"]
[Site "Guayaquil"]
[Date "2012.01.22"]
[Round "6"]
[White "Olvera Urena, Yasser"]
[Black "Crespo Alvarado, Vicente"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1819"]
[BlackElo "1980"]
[PlyCount "144"]
[EventDate "2012.01.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. f4 d5 2. b3 c5 3. Bb2 Nc6 4. e3 e6 5. Bb5 Qb6 6. Bxc6+ Qxc6 7. Nf3 Nf6 8. Qe2 Be7 9. Nc3 a6 10. 0-0-0 b5 11. g4 Bb7 12. d4 c4 13. Ne5 Qc7 14. g5 Nd7 15. Nxd7 Qxd7 16. Kb1 b4 17. Na4 c3 18. Bc1 Qc7 19. Rhf1 g6 20. h4 Bc6 21. Qg2 Bxa4 22. bxa4 Qc6 23. h5 0-0-0 24. hxg6 hxg6 25. Rh1 Rxh1 26. Rxh1 Rf8 27. Rh7 Kd7 28. Qh1 Qxa4 29. Rh8 Qc6 30. Rxf8 Bxf8 31. Qh8 Ke8 32. Qf6 Qd6 33. Qh8 a5 34. Qh1 Qc6 35. Qf1 a4 36. Qd3 Qc4 37. Qd1 Be7 38. Ka1 Kd7 39. Kb1 Kc6 40. Ka1 Bd8 41. Kb1 Ba5 42. Ka1 b3 43. Ba3 bxc2 44. Qxc2 Qf1+ 45. Qb1 Qe2 46. Qc1 Qd2 47. Kb1 Qxc1+ 48. Kxc1 Kb5 49. Be7 c2 50. Kxc2 Kc4 51. Ba3 Bd8 52. Bd6 f6 53. gxf6 Bxf6 54. Ba3 g5 55. fxg5 Bxg5 56. Bc1 Bh4 57. Kd2 Bg3 58. Ba3 Bc7 59. Kc2 Ba5 60. Bc1 Bc3 61. Bd2 Bxd4 62. exd4 Kxd4 63. Bg5 Kc4 64. Bf6 d4 65. Be5 Kd5 66. Bc7 e5 67. Kd2 e4 68. Bb6 Kc4 69. a3 e3+ 70. Ke2 Kc3 71. Ba5+ Kc4 72. Bb4 Kd5 1/2-1/2

[Event "Guayaquil Feda 176 op"]
[Site "Guayaquil"]
[Date "2012.01.22"]
[Round "7"]
[White "Olvera Urena, Yasser"]
[Black "Herrera Arboleda, Kerly Danna"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1819"]
[BlackElo "1864"]
[PlyCount "56"]
[EventDate "2012.01.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[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. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. Nd2 g6 9. c4 Nb6 10. Nf3 Qb4+ 11. Nd2 Bg7 12. f4 0-0 13. a3 Qe7 14. a4 a5 15. b3 Re8 16. Ba3 Qd8 17. 0-0-0 f6 18. g4 d6 19. Qf3 fxe5 20. f5 d5 21. fxg6 hxg6 22. Bg2 e4 23. Qe2 Qf6 24. cxd5 Qa1+ 25. Nb1 cxd5 26. Bb2 Qxb2+ 27. Qxb2 Bxb2+ 28. Kxb2 Bxg4 0-1

[Event "Guayaquil Feda 176 op"]
[Site "Guayaquil"]
[Date "2012.01.21"]
[Round "3"]
[White "Moncada Russo, Bryan Andrew"]
[Black "Olvera Urena, Yasser"]
[Result "1-0"]
[ECO "B47"]
[WhiteElo "1853"]
[BlackElo "1819"]
[PlyCount "111"]
[EventDate "2012.01.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 Qc7 7. 0-0 Nc6 8. Kh1 b5 9. a3 Nxd4 10. Qxd4 Bc5 11. Qd3 Bb7 12. f4 d5 13. e5 Ne4 14. Nxe4 dxe4 15. Qg3 g6 16. Be3 0-0 17. Rac1 Qb6 18. Bxc5 Qxc5 19. c4 b4 20. axb4 Qxb4 21. Qc3 Qxc3 22. Rxc3 Rfd8 23. b3 Rd2 24. Re1 a5 25. Kg1 a4 26. bxa4 Rxa4 27. Kf2 Raa2 28. Ke3 Ba6 29. Bf1 Bb7 30. Re2 Rxe2+ 31. Bxe2 Ba6 32. Rc1 Kg7 33. Bf1 Bb7 34. Kd4 Rf2 35. Ke3 Rb2 36. h3 h5 37. g4 h4 38. Rc3 Rb1 39. Be2 Rg1 40. Kf2 Rh1 41. Rb3 Rh2+ 42. Ke1 Ba8 43. Ra3 Bb7 44. Ra7 Bc6 45. Ra6 Bb7 46. Ra7 Bc6 47. Ra6 Bb7 48. Ra3 Rg2 49. Ra7 Bc6 50. f5 gxf5 51. gxf5 Rg5 52. fxe6 Rxe5 53. Rxf7+ Kg6 54. Bg4 Rc5 55. Rc7 Rxc4 56. e7 1-0

[Event "Guayaquil Feda 176 op"]
[Site "Guayaquil"]
[Date "2012.01.21"]
[Round "4"]
[White "Olvera Urena, Yasser"]
[Black "Mendoza Paredes, Cristobal"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "1819"]
[PlyCount "63"]
[EventDate "2012.01.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. exd5 Nxd5 5. Nxd5 exd5 6. Bd3 Nc6 7. Ne2 Nb4 8. Bf4 Nxd3+ 9. Qxd3 Bd6 10. Qg3 Bxf4 11. Qxg7 Bd2+ 12. Kxd2 Rf8 13. Rae1 Be6 14. Kc1 Qd6 15. Qxh7 0-0-0 16. g3 Bg4 17. Qd3 Qf6 18. Nf4 c6 19. f3 Bf5 20. Qd2 Rh8 21. h4 Rdg8 22. g4 Bd7 23. h5 Qg5 24. Re5 Qh6 25. Rg1 f6 26. Re7 f5 27. Ng6 Rxg6 28. hxg6 Qxg6 29. g5 Rh3 30. Qe3 Qh5 31. g6 Rxf3 32. g7 1-0

[Event "Guayaquil Feda 176 op"]
[Site "Guayaquil"]
[Date "2012.01.21"]
[Round "5"]
[White "Reinozo Trelles, Eduardo"]
[Black "Olvera Urena, Yasser"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "1878"]
[BlackElo "1819"]
[PlyCount "74"]
[EventDate "2012.01.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Nbd7 9. Qd2 b5 10. g4 Nb6 11. Bxb6 Qxb6 12. 0-0-0 Be7 13. h4 0-0 14. h5 Rfc8 15. Kb1 b4 16. Nd5 Bxd5 17. exd5 a5 18. g5 Nd7 19. g6 a4 20. gxf7+ Kxf7 21. Nc1 Nc5 22. Bh3 Rc7 23. Bf5 h6 24. f4 e4 25. Qg2 Kf8 26. Bxe4 b3 27. a3 Nxe4 28. cxb3 Nf2 29. Rhg1 Bf6 30. Rd2 Ne4 31. Re2 Nc5 32. b4 Nb3 33. Nxb3 axb3 34. Rge1 Qd4 35. Qf3 Rxa3 36. Re8+ Kf7 37. Qe2 Ra1+ 0-1

[Event "Guayaquil Feda 176 op"]
[Site "Guayaquil"]
[Date "2012.01.20"]
[Round "2"]
[White "Olvera Urena, Yasser"]
[Black "Silva Paredes, Jair"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1819"]
[BlackElo "1452"]
[PlyCount "80"]
[EventDate "2012.01.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 Nf6 5. f3 0-0 6. Qd2 Nbd7 7. g4 c5 8. dxc5 dxc5 9. 0-0-0 Qa5 10. Bh6 Nb6 11. Bxg7 Kxg7 12. e5 Ng8 13. a3 Be6 14. Nb5 Qxd2+ 15. Rxd2 Bc4 16. Nh3 Bxf1 17. Rxf1 a6 18. Nc3 Nc4 19. Re2 b5 20. e6 b4 21. axb4 cxb4 22. Nd5 a5 23. exf7 Rxf7 24. Ng5 Rf6 25. Nxf6 exf6 26. Ne6+ Kf7 27. Rd1 Ra7 28. Rd8 a4 29. Rf8+ Ke7 30. Rxg8 Kd6 31. Nd4 a3 32. bxa3 bxa3 33. Kb1 Rb7+ 34. Ka1 Kc5 35. c3 Na5 36. Re6 Kc4 37. Ra8 Nb3+ 38. Nxb3 Kxb3 39. Rxf6 Kc2 40. Ka2 Rb3 1-0

[Event "Guayaquil Feda 176 op"]
[Site "Guayaquil"]
[Date "2012.01.20"]
[Round "1"]
[White "Pesantes Aucay, Jose"]
[Black "Olvera Urena, Yasser"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2192"]
[BlackElo "1819"]
[PlyCount "90"]
[EventDate "2012.01.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Nbd7 9. Qd2 b5 10. g4 Nb6 11. g5 Nfd7 12. Nd5 Bxd5 13. exd5 Rc8 14. h4 Qc7 15. c3 Nc4 16. Bxc4 bxc4 17. Nc1 Be7 18. Ne2 Qa5 19. Ng3 Nc5 20. Bxc5 Rxc5 21. Rd1 Rb5 22. a3 Qb6 23. Rh2 h6 24. Kf1 hxg5 25. Nf5 gxh4 26. Nxe7 Kxe7 27. Qg5+ Kf8 28. a4 Rb3 29. Rdd2 h3 30. f4 g6 31. Qg4 exf4 32. Qxf4 Rh5 33. Rhf2 Qc7 34. Qg4 Kg7 35. Kg1 Qe7 36. Qxc4 Rg5+ 37. Kf1 Re5 38. Rh2 Qf6+ 39. Rhf2 Qe7 40. Rfe2 Qf6+ 41. Rf2 Qe7 42. Kg1 Rg5+ 43. Kf1 Re5 44. Kg1 Rg5+ 45. Kf1 Re5 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.11"]
[Round "9"]
[White "Olvera Urena, Yasser"]
[Black "Aizpurua, Patrick Emilio"]
[Result "1/2-1/2"]
[ECO "C13"]
[WhiteElo "1749"]
[BlackElo "2210"]
[PlyCount "69"]
[EventDate "2011.06.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[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 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Ng3 c5 7. dxc5 Qa5+ 8. c3 Qxc5 9. Nf3 0-0 10. Qc2 Rd8 11. Bd3 h6 12. Bxf6 Bxf6 13. Ne4 Qe7 14. h4 e5 15. 0-0-0 Nc6 16. Nxf6+ Qxf6 17. Bh7+ Kh8 18. Rxd8+ Nxd8 19. Be4 Bg4 20. Kb1 Ne6 21. Nh2 Qxh4 22. g3 Qg5 23. Nxg4 Qxg4 24. Rh4 Qg5 25. Bxb7 Rd8 26. Rc4 g6 27. Rc8 Kg7 28. Rxd8 Qxd8 29. b4 f5 30. a4 f4 31. Be4 fxg3 32. fxg3 Qf6 33. a5 h5 34. Kb2 g5 35. Bf5 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.10"]
[Round "8"]
[White "Bravo Navarro, Wilson"]
[Black "Olvera Urena, Yasser"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1955"]
[BlackElo "1749"]
[PlyCount "128"]
[EventDate "2011.06.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d6 3. Nc3 g6 4. Be3 Bg7 5. Nf3 b5 6. h3 Bb7 7. Qd2 Nd7 8. 0-0-0 Qc7 9. Kb1 0-0-0 10. Ng5 Rf8 11. f4 h6 12. Nf3 a6 13. Bd3 e6 14. g4 Ne7 15. Rhf1 Nb6 16. Qf2 b4 17. Ne2 Na4 18. Nd2 Kb8 19. f5 gxf5 20. gxf5 exf5 21. exf5 Nd5 22. Bc4 Nab6 23. Nf4 Nxe3 24. Qxe3 Bf6 25. Bb3 d5 26. Nd3 a5 27. Nc5 Re8 28. Qf2 Re7 29. c3 bxc3 30. bxc3 Rhe8 31. Rde1 Bc8 32. Bc2 Nd7 33. Ndb3 Nxc5 34. Nxc5 Rxe1+ 35. Rxe1 Rxe1+ 36. Qxe1 Be7 37. Nb3 Ba6 38. Qe3 h5 39. Bd1 h4 40. Ka1 a4 41. f6 Ba3 42. Qe8+ Bc8 43. Nc5 Bxc5 44. dxc5 a3 45. Bg4 Qb7 46. Qxc8+ Qxc8 47. Bxc8 Kxc8 48. Kb1 Kb7 49. Kc2 Ka6 50. Kb3 Ka5 51. c4 dxc4+ 52. Kxc4 Ka4 53. Kc3 Kb5 54. Kb3 Kxc5 55. Kxa3 Kc4 56. Kb2 Kb4 57. Kc2 Ka3 58. Kc3 Kxa2 59. Kc4 Kb2 60. Kc5 Kc3 61. Kxc6 Kd4 62. Kd6 Ke4 63. Ke7 Kf4 64. Kxf7 Kg3 1-0

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.09"]
[Round "7"]
[White "Olvera Urena, Yasser"]
[Black "Palma Moscoso, Alvaro Dario"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1749"]
[BlackElo "2140"]
[PlyCount "195"]
[EventDate "2011.06.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. d3 d6 6. Nf3 Nc6 7. 0-0 e6 8. Bg5 Nf6 9. Re1 Be7 10. e5 Nd7 11. Bxe7 Qxe7 12. Nd5 Qd8 13. exd6 0-0 14. Nc3 Qb6 15. Qd2 Nb4 16. Ne4 h6 17. a3 Nd5 18. d4 c4 19. Ne5 Rad8 20. c3 N7f6 21. Nc5 Rxd6 22. b3 cxb3 23. Reb1 Ba8 24. Rxb3 Ne7 25. Bxa8 Qxc5 26. dxc5 Rxd2 27. Bb7 Ned5 28. c4 bxc4 29. Nxc4 Rc2 30. Bxa6 Ne4 31. Ne3 Nxe3 32. Rxe3 Nxc5 33. Bd3 Rd2 34. Bf1 Ra8 35. Rc1 Nd7 36. Rcc3 Nf6 37. Re2 Rd1 38. Rec2 Ra5 39. Kg2 g6 40. Rf3 Ng4 41. Rcc3 Rxf1 42. Kxf1 Nxh2+ 43. Kg2 Nxf3 44. Kxf3 Kg7 45. Ke3 e5 46. Kd3 f5 47. Kc4 Ra8 48. Kb4 Rb8+ 49. Kc5 Kf6 50. a4 Ke6 51. Ra3 Rb2 52. f3 f4 53. gxf4 exf4 54. a5 g5 55. a6 Rb8 56. a7 Ra8 57. Ra6+ Kf5 58. Kd4 Rd8+ 59. Kc3 Ra8 60. Kd3 Ke5 61. Rxh6 Rxa7 62. Rg6 Kf5 63. Rg8 Ra2 64. Rh8 Ra3+ 65. Ke2 Ra2+ 66. Kf1 Ke5 67. Rg8 Kd4 68. Re8 Kd3 69. Re7 Rh2 70. Re8 Rc2 71. Re7 Kd4 72. Re8 Rc5 73. Kf2 Re5 74. Rd8+ Kc5 75. Rd2 Re3 76. Rc2+ Kd6 77. Ra2 Ke6 78. Ra6+ Kf5 79. Rh6 Re6 80. Rh8 Ra6 81. Rg8 Rh6 82. Kg2 Rh7 83. Kg1 Kf6 84. Kg2 Rg7 85. Ra8 Kg6 86. Ra6+ Kh5 87. Ra1 Rg8 88. Rb1 Rc8 89. Rh1+ Kg6 90. Ra1 Rc2+ 91. Kf1 Kh5 92. Rb1 Kh4 93. Rb5 Kg3 94. Rxg5+ Kxf3 95. Kg1 Rc1+ 96. Kh2 Kf2 97. Rg8 f3 98. Rf8 0-1

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.08"]
[Round "6"]
[White "Gemy Vargas, Jose Daniel"]
[Black "Olvera Urena, Yasser"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2269"]
[BlackElo "1749"]
[PlyCount "63"]
[EventDate "2011.06.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Be7 6. Qc2 0-0 7. e4 d5 8. cxd5 exd5 9. e5 Nfd7 10. Bd3 h6 11. 0-0 c5 12. Bf4 Re8 13. Rad1 c4 14. Bf5 Nf8 15. Be3 Na6 16. Ne1 Bc8 17. Nxd5 Bxf5 18. Nxe7+ Qxe7 19. Qxf5 b5 20. f4 b4 21. Qc2 bxa3 22. Qxc4 Nc7 23. d5 axb2 24. d6 Qe6 25. Qxc7 Qb3 26. Nd3 Ne6 27. Qa5 b1Q 28. Rxb1 Qxd3 29. Qd2 Qf5 30. h3 h5 31. Rfd1 Red8 32. Qd3 1-0

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.08"]
[Round "5"]
[White "Olvera Urena, Yasser"]
[Black "Jarrin Cobos, Jose"]
[Result "1/2-1/2"]
[ECO "C18"]
[WhiteElo "1749"]
[BlackElo "2071"]
[PlyCount "54"]
[EventDate "2011.06.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[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 Qc7 7. Qg4 f5 8. Qg3 Ne7 9. Bd2 0-0 10. Bd3 Nbc6 11. Nf3 Bd7 12. h4 Kh8 13. h5 Ng8 14. Qh4 Be8 15. g3 Rc8 16. Kf1 c4 17. Be2 Nd8 18. Kg2 Ba4 19. Ra2 Nf7 20. Ng1 Qe7 21. Qxe7 Nxe7 22. Nh3 Rc6 23. Rb2 Nd8 24. Bg5 Re8 25. f3 h6 26. Bh4 Kg8 27. Nf4 b5 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.07"]
[Round "4"]
[White "Olvera Urena, Yasser"]
[Black "Palacios Zambrano, Victor"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1749"]
[BlackElo "2133"]
[PlyCount "65"]
[EventDate "2011.06.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Bc4 b5 5. Be2 Nxd5 6. d4 g6 7. Nf3 Bg7 8. 0-0 0-0 9. c3 a6 10. Bg5 h6 11. Bh4 Nc6 12. Nbd2 Be6 13. Nb3 Nf4 14. Re1 g5 15. Bg3 Nxe2+ 16. Qxe2 Bc4 17. Qc2 e6 18. Nc5 Bd5 19. Ne5 Ne7 20. Ned7 Re8 21. Be5 Nf5 22. Bxg7 Kxg7 23. Ne5 f6 24. Ng4 Nh4 25. f3 h5 26. Nf2 f5 27. Re3 Qd6 28. Nfd3 Re7 29. Qf2 Ng6 30. Ne5 Nf4 31. Qg3 Kf6 32. h4 Rg8 33. hxg5+ 1-0

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.06"]
[Round "2"]
[White "Olvera Urena, Yasser"]
[Black "Henriquez Villagra, Cristobal"]
[Result "1/2-1/2"]
[ECO "B26"]
[WhiteElo "1749"]
[BlackElo "2218"]
[PlyCount "88"]
[EventDate "2011.06.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. d3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nc3 e6 6. Nge2 Nge7 7. Be3 d6 8. Qd2 h6 9. h4 Nd4 10. f4 Nxe2 11. Qxe2 Qb6 12. 0-0-0 Bd7 13. Qf2 Bxc3 14. bxc3 Qa5 15. Kd2 Rc8 16. h5 d5 17. exd5 exd5 18. hxg6 fxg6 19. Rde1 Bf5 20. g4 Bxg4 21. Qh4 Bf5 22. Qf6 Rf8 23. Qe5 Qc7 24. Qxc7 Rxc7 25. Rxh6 Rf6 26. Bf2 Re6 27. Rxe6 Bxe6 28. Rh1 b6 29. Bh4 Nf5 30. Bf6 Rf7 31. Be5 Ne7 32. Rf1 Kd7 33. a3 Nc6 34. Ke3 Ne7 35. Bf3 Rh7 36. Rf2 Nf5+ 37. Kd2 Rh4 38. Bg2 Rh2 39. Ke2 a6 40. Bf3 Rh6 41. Rg2 Kc6 42. Rf2 Kb5 43. Kd2 Ka4 44. Bc7 Kb5 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.06"]
[Round "3"]
[White "Rojas Alarcon, Julian Antonio"]
[Black "Olvera Urena, Yasser"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2297"]
[BlackElo "1749"]
[PlyCount "35"]
[EventDate "2011.06.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nf3 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 c6 7. d5 Na6 8. Nc3 Nh5 9. e4 fxe4 10. Nxe4 Rb8 11. Qe2 h6 12. Re1 d6 13. Nh4 Kh7 14. Nc3 Bf6 15. Nxg6 Kxg6 16. Be4+ Kg7 17. Qxh5 Rh8 18. Qg6+ 1-0

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.05"]
[Round "1"]
[White "Torres Rosas, Luis Carlos"]
[Black "Olvera Urena, Yasser"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "2129"]
[BlackElo "1749"]
[PlyCount "52"]
[EventDate "2011.06.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. e4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Be7 6. g3 Bb7 7. Bg2 0-0 8. 0-0 a5 9. b3 Na6 10. Bb2 c5 11. Re1 d5 12. exd5 exd5 13. Ne5 cxd4 14. Ndf3 Re8 15. Nxd4 Bc5 16. Nd3 Ne4 17. Nf4 Bd6 18. c3 Be5 19. Rc1 Nac5 20. b4 axb4 21. axb4 Na4 22. Ba1 Bd6 23. Nd3 Qd7 24. f3 Ng5 25. Qb3 Bb8 26. Nf4 b5 0-1

