[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.11"]
[Round "9"]
[White "Rivera Ochoa, Byron"]
[Black "Ortiz Quishpi, Oscar"]
[Result "0-1"]
[ECO "E67"]
[WhiteElo "1708"]
[BlackElo "1956"]
[PlyCount "80"]
[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. c4 d6 2. g3 g6 3. Bg2 Bg7 4. Nf3 e5 5. Nc3 Nf6 6. 0-0 0-0 7. d4 Nbd7 8. d5 Nh5 9. e4 Nb6 10. Nd2 f5 11. b4 Qe8 12. Qe2 a5 13. Ba3 axb4 14. Bxb4 f4 15. Nb3 Nd7 16. Nb5 Ra4 17. a3 Nc5 18. Bxc5 dxc5 19. Rfd1 b6 20. d6 cxd6 21. Rxd6 Qf7 22. Nd2 Be6 23. Rc1 Bh6 24. Bf1 fxg3 25. hxg3 Bg4 26. Qe1 Bd7 27. Rc2 Kh8 28. Nb1 Bxb5 29. cxb5 Qf3 30. Bg2 Qb3 31. Qd1 Rd4 32. Rxd4 exd4 33. Nd2 Qxb5 34. e5 Qa4 35. Qb1 d3 36. Rb2 c4 37. Ne4 Qxa3 38. Rxb6 d2 39. Nxd2 Bxd2 40. Qe4 Qc5 0-1

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.10"]
[Round "8"]
[White "Lozano Cedeno, Jorge"]
[Black "Rivera Ochoa, Byron"]
[Result "0-1"]
[ECO "E65"]
[WhiteElo "1790"]
[BlackElo "1708"]
[PlyCount "68"]
[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. c4 Nf6 2. d4 c5 3. Nf3 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 d6 7. h3 Nc6 8. Nc3 Bd7 9. Kh2 cxd4 10. Nxd4 Nxd4 11. Qxd4 Ng4+ 12. Qxg4 Bxg4 13. hxg4 Rc8 14. Bxb7 Rxc4 15. Bf3 e6 16. Be3 d5 17. Rad1 Qb8 18. Bc1 a5 19. Kg2 a4 20. a3 Bxc3 21. bxc3 Rxc3 22. Bh6 Rfc8 23. e4 dxe4 24. Bxe4 Rd8 25. Rb1 Rb3 26. Rbc1 Rd4 27. Bc6 Rxg4 28. Rfd1 Rbxg3+ 29. fxg3 Qxg3+ 30. Kf1 Qh3+ 31. Ke2 Qxh6 32. Bf3 Qh2+ 33. Ke3 Qe5+ 34. Kf2 Qb2+ 0-1

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.09"]
[Round "7"]
[White "Meza Ponce, Jerry"]
[Black "Rivera Ochoa, Byron"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2073"]
[BlackElo "1708"]
[PlyCount "33"]
[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. a3 g6 2. Nf3 Bg7 3. g3 Nf6 4. Bg2 0-0 5. 0-0 c5 6. d3 Nc6 7. Nc3 b6 8. Rb1 Bb7 9. b4 cxb4 10. axb4 e6 11. h4 Rc8 12. Nh2 d5 13. Na2 Qc7 14. Bg5 h6 15. Bd2 e5 16. c3 e4 17. Bf4 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.08"]
[Round "5"]
[White "Palacios Zambrano, Victor"]
[Black "Rivera Ochoa, Byron"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2133"]
[BlackElo "1708"]
[PlyCount "117"]
[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 c5 3. d5 b5 4. cxb5 a6 5. b6 Qxb6 6. Nc3 d6 7. Nf3 g6 8. Nd2 Bg7 9. e4 0-0 10. Nc4 Qc7 11. Bd3 Nbd7 12. 0-0 Nb6 13. h3 Nfd7 14. f4 Nxc4 15. Bxc4 Nb6 16. Be2 e6 17. dxe6 fxe6 18. Bf3 Rb8 19. Qe2 Bd4+ 20. Kh1 Bb7 21. Rb1 d5 22. exd5 exd5 23. Qe6+ Kg7 24. Qg4 Bc8 25. Qg3 Bf5 26. Ra1 Qd6 27. Rd1 Rfe8 28. Ne2 Bf6 29. Qf2 d4 30. Ng3 Bd7 31. Ne4 Rxe4 32. Bxe4 Re8 33. Bf3 Nd5 34. Bxd5 Qxd5 35. Kh2 Bc6 36. b3 d3 37. Bb2 Re2 38. Bxf6+ Kxf6 39. Qxe2 dxe2 40. Rxd5 Bxd5 41. Re1 c4 42. Rxe2 cxb3 43. axb3 Bxb3 44. Re5 Bc4 45. g4 h6 46. h4 Bb5 47. Kg3 Ba4 48. Kf3 Bb5 49. Ke3 Bf1 50. Kd4 Bh3 51. g5+ hxg5 52. hxg5+ Kf7 53. Ra5 Bf1 54. Ke5 Bb5 55. Ra3 Bc4 56. Rc3 Bb5 57. Rc7+ Kf8 58. Kf6 Be8 59. Ra7 1-0

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.08"]
[Round "6"]
[White "Rivera Ochoa, Byron"]
[Black "Salazar Loor, Rodger Benjamin"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "1708"]
[BlackElo "2040"]
[PlyCount "102"]
[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. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bc5 5. d3 h6 6. Nf3 0-0 7. 0-0 d6 8. a3 a6 9. b4 Ba7 10. e3 Be6 11. Bb2 e4 12. Nd4 Nxd4 13. exd4 Bxd4 14. dxe4 Bxc3 15. Bxc3 Bxc4 16. Re1 Rb8 17. Rc1 b5 18. Qf3 Re8 19. Rcd1 Nh7 20. h4 Qe7 21. e5 d5 22. Bd4 Nf8 23. Bc5 Qd7 24. Kh2 Ne6 25. Bh3 Qc6 26. Bxe6 Rxe6 27. Rd4 Rbe8 28. Rf4 Qd7 29. Qh5 Rg6 30. Re3 Qe6 31. Qd1 Rd8 32. Ref3 Rd7 33. Re3 Kh8 34. Qd4 h5 35. f3 Bf1 36. g4 hxg4 37. fxg4 Bc4 38. g5 Qe8 39. Rg4 Qd8 40. Rf4 Re6 41. Rg4 Qg8 42. Qf4 Qh7 43. h5 Qc2+ 44. Rg2 Qd1 45. g6 Kg8 46. h6 Qh5+ 47. Rh3 Qxe5 48. gxf7+ Rxf7 49. h7+ Kh8 50. Qxe5 Rxe5 51. Bd4 Re2 0-1

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.07"]
[Round "4"]
[White "Rivera Ochoa, Byron"]
[Black "Leon Magallanes, Isaac David"]
[Result "0-1"]
[ECO "E67"]
[WhiteElo "1708"]
[BlackElo "1929"]
[PlyCount "112"]
[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. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Nc3 c6 7. d4 Qa5 8. e4 Nbd7 9. Re1 e5 10. dxe5 Nxe5 11. Nxe5 dxe5 12. Qc2 Be6 13. b3 Rfd8 14. Bb2 b5 15. cxb5 cxb5 16. Qe2 a6 17. Red1 Bg4 18. f3 Be6 19. Rxd8+ Rxd8 20. Rd1 Rxd1+ 21. Qxd1 Qb6+ 22. Kh1 Qc7 23. Qd3 Bf8 24. Bf1 Qd6 25. Qxd6 Bxd6 26. Kg2 Kf8 27. Bd3 Ke7 28. Ne2 Nd7 29. h3 Nc5 30. Bc2 b4 31. f4 f6 32. fxe5 fxe5 33. g4 a5 34. Nc1 Bd7 35. Kf3 Bb5 36. h4 h6 37. a3 Ke6 38. axb4 axb4 39. Ke3 Be7 40. h5 gxh5 41. gxh5 Bg5+ 42. Kf3 Kf6 43. Na2 Na6 44. Nc1 Nc5 45. Na2 Bd2 46. Nc1 Bf4 47. Kg4 Bd7+ 48. Kf3 Kg5 49. Nd3 Bg4+ 50. Kg2 Nxd3 51. Bxd3 Kxh5 52. Bc4 Kg5 53. Bd5 h5 54. Bc4 h4 55. Bf1 h3+ 56. Kg1 Kh4 0-1

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.06"]
[Round "3"]
[White "Pacheco, Josue"]
[Black "Rivera Ochoa, Byron"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1973"]
[BlackElo "1708"]
[PlyCount "108"]
[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 Nc6 3. f4 g6 4. Nf3 Bg7 5. Be2 e6 6. e5 d6 7. exd6 Qxd6 8. d3 Nf6 9. 0-0 0-0 10. Ng5 Nd4 11. Nce4 Nxe4 12. Nxe4 Qc7 13. c3 Nxe2+ 14. Qxe2 b6 15. Be3 Ba6 16. Rad1 Qc6 17. Qf3 Rac8 18. Rf2 Bb7 19. Qh3 Rcd8 20. Ng5 h6 21. Nf3 Qa4 22. b3 Qb5 23. c4 Qe8 24. Rfd2 Bxf3 25. gxf3 Qe7 26. Kh1 h5 27. d4 cxd4 28. Bxd4 Bxd4 29. Rxd4 Rxd4 30. Rxd4 Rd8 31. Rxd8+ Qxd8 32. Qf1 Qd2 33. Kg1 Kg7 34. Qa1+ f6 35. Qf1 Qxf4 36. Qd3 Qc7 37. Kg2 g5 38. Qd4 Qc6 39. h3 e5 40. Qd8 g4 41. hxg4 hxg4 42. Qe7+ Kg6 43. Qxa7 Qxf3+ 44. Kg1 Qe3+ 45. Kg2 g3 46. Qd7 f5 47. Qe6+ Kg5 48. Qe7+ Kg4 49. Qg7+ Kf4 50. Qh6+ Ke4 51. Qc6+ Kd3 52. Qd7+ Ke2 53. Qxf5 Qf2+ 54. Qxf2+ gxf2 0-1

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.06"]
[Round "2"]
[White "Rivera Ochoa, Byron"]
[Black "Principe, Alexander"]
[Result "0-1"]
[ECO "E63"]
[WhiteElo "1708"]
[BlackElo "2075"]
[PlyCount "110"]
[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. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Nc3 Nc6 7. d4 a6 8. a3 Rb8 9. b4 b5 10. cxb5 axb5 11. Bb2 e6 12. Rc1 Ne7 13. Qd3 c6 14. Rfd1 Nd7 15. Ne4 Nb6 16. Nfd2 f5 17. Ng5 h6 18. Ngf3 Bd7 19. e4 fxe4 20. Qxe4 Qe8 21. Bh3 Qf7 22. Re1 Nf5 23. Bxf5 exf5 24. Qf4 Qf6 25. Qe3 Nd5 26. Qd3 Rfc8 27. Ba1 Be6 28. Nb3 Qf7 29. Na5 Rb6 30. Re2 Nf6 31. Rce1 Re8 32. Nh4 Bd5 33. f3 Rxe2 34. Rxe2 Nh7 35. Bb2 Ng5 36. Bc1 Ne6 37. Be3 Rb8 38. Bf2 Ng5 39. Qe3 Bf6 40. Kf1 Ne6 41. Qxh6 Bxh4 42. gxh4 Bxf3 43. Rc2 Rc8 44. Qe3 Be4 45. Rc3 Nc7 46. Qg3 f4 47. Qg4 Bf5 48. Qf3 Nd5 49. Rxc6 Re8 50. Rxd6 Ne3+ 51. Bxe3 fxe3 52. Ke1 Qe7 53. Qg3 Qe4 54. Nc6 Qb1+ 55. Ke2 Qd3+ 0-1

[Event "Pan American-ch U20"]
[Site "Duran"]
[Date "2011.06.05"]
[Round "1"]
[White "Barros, Raul Junior"]
[Black "Rivera Ochoa, Byron"]
[Result "1/2-1/2"]
[ECO "B34"]
[WhiteElo "2111"]
[BlackElo "1708"]
[PlyCount "116"]
[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. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 0-0 8. 0-0 d5 9. exd5 Nxd5 10. Nxc6 bxc6 11. Bd4 Nxc3 12. bxc3 Be6 13. Bf3 Bd5 14. Bxg7 Kxg7 15. Re1 e6 16. c4 Bxc4 17. Bxc6 Rc8 18. Qf3 Bd5 19. Bxd5 Qxd5 20. Qe2 Qf5 21. c4 Rc5 22. Rac1 Rb8 23. Qe3 Rbc8 24. h3 a6 25. Qb3 Qf4 26. g3 Qd4 27. Red1 Qe4 28. Qc3+ e5 29. Re1 Qd4 30. Qa3 Rxc4 31. Rcd1 Ra4 32. Rxd4 Rxa3 33. Rxe5 Rxa2 34. Re7 Rc6 35. Red7 Rf6 36. Rd2 Rxd2 37. Rxd2 a5 38. Ra2 Ra6 39. Ra4 Kf6 40. Kf1 h5 41. Ke2 Re6+ 42. Kd3 Re5 43. f3 g5 44. Rc4 Kf5 45. g4+ hxg4 46. hxg4+ Kf6 47. Rc6+ Re6 48. Rc5 Ra6 49. Rc3 a4 50. Ra3 Ke5 51. Ke3 f6 52. Kd3 Rd6+ 53. Ke3 Rd4 54. Rc3 Rf4 55. Rc5+ Kd6 56. Rc3 Rb4 57. Rc8 Kd7 58. Rc5 Kd6 1/2-1/2

