[Event "Cartago CupT"]
[Site "Cartago"]
[Date "2011.08.31"]
[Round "1.4"]
[White "Arias, Miguel Antonio"]
[Black "Cadavid, Juan Miguel"]
[Result "1-0"]
[ECO "B43"]
[PlyCount "65"]
[EventDate "2011.08.31"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]
[WhiteTeam "Restrepo"]
[BlackTeam "Cartago II"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. Bg5 Be7 8. 0-0 0-0 9. Re1 d6 10. Re3 Nbd7 11. Rg3 Ne5 12. Nf3 Nh5 13. Rh3 Nxf3+ 14. Qxf3 Bxg5 15. Qxh5 h6 16. Rg3 Qe7 17. Rf1 Bd7 18. f4 g6 19. Qh3 e5 20. f5 Bc6 21. Bc4 Kg7 22. Bd5 Qf6 23. Rgf3 Bf4 24. g3 Qg5 25. Kh1 Bd2 26. fxg6 fxg6 27. Bxc6 bxc6 28. Qd7+ Kg8 29. Rf7 Rxf7 30. Rxf7 Rf8 31. Rg7+ Kh8 32. Rh7+ Kg8 33. Qg7# 1-0

[Event "Cartago CupT"]
[Site "Cartago"]
[Date "2011.08.31"]
[Round "3.4"]
[White "Arias, Miguel Antonio"]
[Black "Hernandez, Cristian Andres"]
[Result "0-1"]
[ECO "B42"]
[BlackElo "2060"]
[PlyCount "102"]
[EventDate "2011.08.31"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]
[WhiteTeam "Restrepo"]
[BlackTeam "Cartago"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Bd3 Be7 8. 0-0 0-0 9. Re1 Nc6 10. Nf3 b5 11. a3 Bb7 12. e5 dxe5 13. Nxe5 h6 14. Nxc6 Bxc6 15. Bf4 Qb6 16. Ne4 Bxe4 17. Bxe4 Nxe4 18. Rxe4 Bf6 19. Be5 Bxe5 20. Rxe5 Rfd8 21. Qe2 Qd4 22. c3 Qd2 23. Re1 Ra7 24. Qxd2 Rxd2 25. R5e2 Rad7 26. f3 Rxe2 27. Rxe2 Rd1+ 28. Kf2 Kf8 29. Ke3 Ke7 30. Rd2 Rh1 31. h3 e5 32. Kd3 f5 33. c4 bxc4+ 34. Kxc4 Rc1+ 35. Kd5 Kf6 36. Re2 Rd1+ 37. Kc6 g5 38. a4 Ke6 39. b4 h5 40. Kb6 Rd6+ 41. Ka5 g4 42. hxg4 hxg4 43. b5 axb5 44. axb5 gxf3 45. gxf3 Rd3 46. f4 e4 47. b6 Rb3 48. Ka6 Kd5 49. b7 e3 50. Ka7 Ke4 51. Rh2 Kxf4 0-1

[Event "Cartago CupT"]
[Site "Cartago"]
[Date "2011.08.31"]
[Round "5.4"]
[White "Arias, Miguel Antonio"]
[Black "Valencia, David Fernando"]
[Result "0-1"]
[ECO "B27"]
[BlackElo "1796"]
[PlyCount "62"]
[EventDate "2011.08.31"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]
[WhiteTeam "Restrepo"]
[BlackTeam "Buga"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. d4 cxd4 5. cxd4 d5 6. e5 f6 7. Nc3 Be6 8. Bb5+ Nc6 9. Qa4 Qb6 10. Qb3 Rd8 11. Bxc6+ Qxc6 12. Bf4 g5 13. exf6 exf6 14. Bg3 Ne7 15. h4 g4 16. Ng1 0-0 17. Nge2 Nf5 18. 0-0 Nxg3 19. Nxg3 f5 20. Nce2 f4 21. Nh5 f3 22. Nef4 Bxd4 23. Nxe6 Qxe6 24. Qxb7 Rb8 25. Qc7 Rxb2 26. Rae1 Re2 27. Qc1 Bxf2+ 28. Kh1 fxg2+ 29. Kxg2 Qe4+ 30. Kh2 Bg3+ 31. Kxg3 Qg2# 0-1

[Event "Cartago CupT"]
[Site "Cartago"]
[Date "2011.08.31"]
[Round "2.4"]
[White "Ramirez, Carlos Andres"]
[Black "Arias, Miguel Antonio"]
[Result "0-1"]
[ECO "C55"]
[PlyCount "20"]
[EventDate "2011.08.31"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]
[WhiteTeam "Roldanillo II"]
[BlackTeam "Restrepo"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 h6 5. Bd5 Nf6 6. Bxc6 dxc6 7. Nxe5 Qd4 8. Qe2 Qxe5 9. Nc3 0-0 10. 0-0 Ng4 0-1

[Event "Cartago CupT"]
[Site "Cartago"]
[Date "2011.08.31"]
[Round "4.4"]
[White "Torres, Carlos Alberto"]
[Black "Arias, Miguel Antonio"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "64"]
[EventDate "2011.08.31"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]
[WhiteTeam "Buenaventura II"]
[BlackTeam "Restrepo"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Bc5 5. 0-0 0-0 6. d3 h6 7. Be3 Bb4 8. Ne2 d6 9. c3 Ba5 10. h3 Be6 11. Nd2 Bxc4 12. dxc4 Bb6 13. Bxb6 axb6 14. f4 Re8 15. f5 Ne7 16. Ng3 c6 17. c5 bxc5 18. Nc4 Nc8 19. Qc2 b5 20. Ne3 d5 21. Rfd1 d4 22. Nef1 Qb6 23. Kh1 c4 24. b3 Nd6 25. bxc4 bxc4 26. Rab1 Qa7 27. Ra1 d3 28. Qc1 Ndxe4 29. Nxe4 Nxe4 30. Ne3 Nf2+ 31. Kh2 Nxd1 32. Qxd1 Qxe3 0-1

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.20"]
[Round "7"]
[White "Mayorquin Polanco, Nicolas"]
[Black "Arias, Miguel Antonio"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "59"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 Bg4 9. h3 Bh5 10. Qb3 Rb8 11. 0-0 Nf6 12. Rfe1 0-0 13. Rad1 Na5 14. Qc3 Nxc4 15. Qxc4 Re8 16. d5 Qd7 17. Rc1 Re7 18. Rc3 Rc8 19. Nd4 Bg6 20. f4 Nxe4 21. Nxe4 Rxe4 22. Rxe4 Bxe4 23. Nb5 Qf5 24. Nxd6 Bxd5 25. Nxf5 Bxc4 26. Ne7+ Kf8 27. Nxc8 Bxa2 28. Rxc7 Bd5 29. Rd7 Be6 30. Rd8# 1-0

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.19"]
[Round "4"]
[White "Arias, Miguel Antonio"]
[Black "Moran, Daniel Stiven"]
[Result "0-1"]
[ECO "B28"]
[BlackElo "2125"]
[PlyCount "62"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf3 Bb4 7. Bd3 d5 8. Bd2 Bxc3 9. Bxc3 dxe4 10. Bxe4 Qxd1+ 11. Rxd1 Nxe4 12. Bxe5 f6 13. Bd4 Nc6 14. 0-0 Kf7 15. Rfe1 Re8 16. Re3 Bg4 17. Bb6 Re7 18. Rde1 Rae8 19. h3 Bxf3 20. Rxf3 Ng5 21. Rxe7+ Rxe7 22. Re3 Rxe3 23. Bxe3 Nb4 24. c3 Nd5 25. Bd4 Nf4 26. Kf1 Ke6 27. h4 Ne4 28. g3 Nd3 29. b4 Kd5 30. f3 Nxg3+ 31. Kg2 Ne2 0-1

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.19"]
[Round "5"]
[White "Osorio, Luis Alberto"]
[Black "Arias, Miguel Antonio"]
[Result "1/2-1/2"]
[ECO "B22"]
[PlyCount "37"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 g6 4. d4 cxd4 5. cxd4 Bg7 6. Be3 d6 7. Be2 Nf6 8. Nc3 0-0 9. h3 Bd7 10. 0-0 b6 11. e5 dxe5 12. dxe5 Ne8 13. Nd4 Bxe5 14. Nxc6 Bxc6 15. Qc2 Rc8 16. f4 Bg7 17. f5 Nf6 18. Rad1 Qc7 19. Bf3 1/2-1/2

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.18"]
[Round "1"]
[White "Arias, Miguel Antonio"]
[Black "Herrera, Juan Sebastian"]
[Result "0-1"]
[ECO "C50"]
[BlackElo "2006"]
[PlyCount "42"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 d6 6. Bg5 Na5 7. Bb3 c6 8. 0-0 h6 9. Bh4 g5 10. Bg3 h5 11. h3 h4 12. Bh2 g4 13. Ng5 Nxb3 14. axb3 g3 15. Nf3 gxh2+ 16. Kxh2 Nh5 17. Ne2 Qf6 18. Qd2 Rg8 19. Qe1 Nf4 20. Nxf4 Qxf4+ 21. Kh1 Bxh3 0-1

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.18"]
[Round "3"]
[White "Arias, Miguel Antonio"]
[Black "Valencia, Adrian David"]
[Result "1-0"]
[ECO "C45"]
[BlackElo "1981"]
[PlyCount "107"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Ndb5 Qxe4+ 7. Qe2 Qxe2+ 8. Bxe2 Ba5 9. Bd2 a6 10. Na3 Nge7 11. Nc4 Bb4 12. a3 Bc5 13. Be3 Bxe3 14. Nxe3 Nd4 15. Bd3 c6 16. 0-0-0 Ne6 17. Rhe1 0-0 18. g3 d5 19. Nf5 Nxf5 20. Bxf5 Nc5 21. Bd3 Nxd3+ 22. Rxd3 Bd7 23. Re7 Rad8 24. Ne2 Rfe8 25. Rde3 Kf8 26. Rxe8+ Rxe8 27. Kd2 Rxe3 28. Kxe3 Bf5 29. c3 c5 30. Kf4 Bd3 31. Nc1 Bf1 32. Ke5 Bg2 33. Nd3 c4 34. Nf4 Bf3 35. Nxd5 Ke8 36. Nb6 Be2 37. Kd4 Ke7 38. Nxc4 Bxc4 39. Kxc4 Kd6 40. a4 Kc6 41. b4 Kd6 42. Kd4 b6 43. c4 Kc6 44. f4 Kd6 45. c5+ bxc5+ 46. bxc5+ Kc6 47. g4 f6 48. h4 g6 49. g5 fxg5 50. hxg5 Kc7 51. Kd5 Kd7 52. c6+ Kc7 53. Kc5 a5 54. Kb5 1-0

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.18"]
[Round "2"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Arias, Miguel Antonio"]
[Result "1-0"]
[ECO "D53"]
[WhiteElo "1763"]
[PlyCount "45"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Bg5 Be7 5. Nc3 b6 6. cxd5 Nxd5 7. Nxd5 exd5 8. Bxe7 Qxe7 9. e3 Bg4 10. Qc2 Bxf3 11. Bb5+ Kd8 12. gxf3 Qb4+ 13. Qc3 Qxb5 14. Rc1 c6 15. Rg1 Rg8 16. e4 Kd7 17. Rg5 Qc4 18. Qd2 Qxa2 19. Qf4 dxe4 20. d5 Qa5+ 21. Kf1 Qb4 22. Qxf7+ Qe7 23. dxc6+ 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.06"]
[Round "8"]
[White "Arias, Miguel Antonio"]
[Black "Gomez Granda, Julian David"]
[Result "1/2-1/2"]
[ECO "C55"]
[PlyCount "51"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Bc4 Be7 4. d3 Nf6 5. Bg5 0-0 6. Nc3 Nc6 7. Qd2 Bg4 8. h3 Bh5 9. g4 Bg6 10. 0-0-0 Na5 11. Rdg1 Nxc4 12. dxc4 a5 13. Qe3 Qd7 14. Bxf6 Bxf6 15. h4 h5 16. gxh5 Bxh5 17. Ng5 g6 18. f4 exf4 19. Qxf4 Bg7 20. Qe3 Bh6 21. Rg3 Qe7 22. Qd4 f6 23. Kb1 fxg5 24. hxg5 Bg7 25. Qe3 Qe5 26. Rgh3 1/2-1/2

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "6"]
[White "Arias, Miguel Antonio"]
[Black "Valencia, Camilo"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "97"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 d6 5. h3 h6 6. Nc3 Nf6 7. 0-0 0-0 8. Be3 Bb6 9. Qd2 Be6 10. Bxe6 fxe6 11. Bxb6 axb6 12. Rfe1 Re8 13. Ne2 d5 14. Ng3 Qe7 15. Re2 Qf7 16. Rae1 d4 17. a3 Nd7 18. c3 Ne7 19. cxd4 exd4 20. Nxd4 e5 21. Ndf5 c5 22. Nd6 Qe6 23. Nxe8 Rxe8 24. Qc3 Nc6 25. Qc4 Nd4 26. Qxe6+ Rxe6 27. Rd2 g6 28. Ne2 Nb5 29. a4 Nc7 30. f4 Rd6 31. Red1 Ne6 32. fxe5 Nxe5 33. b3 Nd4 34. Nxd4 Rxd4 35. Rf1 Kg7 36. Ra1 Kf6 37. a5 bxa5 38. Rxa5 Rxd3 39. Rxd3 Nxd3 40. Rb5 Ke5 41. b4 Nxb4 42. Rxc5+ Kd4 43. Rb5 Nd3 44. Rxb7 Kxe4 45. Rb6 Kf5 46. Kh2 h5 47. Ra6 Ne5 48. Ra5 Ke6 49. g4 1/2-1/2

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "7"]
[White "Ramos, Polo Gabriel"]
[Black "Arias, Miguel Antonio"]
[Result "1-0"]
[ECO "C64"]
[PlyCount "65"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 d6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 Bd7 9. d5 Nce7 10. Bxd7+ Qxd7 11. Qb3 b6 12. Rc1 Nf6 13. 0-0 0-0 14. Rc3 Rfc8 15. h3 Ng6 16. Rfc1 Nf4 17. Re3 a5 18. Rcc3 a4 19. Qc2 b5 20. a3 h6 21. Kf1 Ra7 22. Ne1 Ng6 23. Nd3 Qe7 24. Qd1 Nd7 25. Rc1 Nde5 26. Nxe5 Qxe5 27. Qc2 Qh2 28. Rg3 Nf4 29. Nf3 Qh1+ 30. Ng1 Re8 31. Qc3 Re5 32. Qe3 Ra8 33. Qxf4 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.04"]
[Round "4"]
[White "Arias, Miguel Antonio"]
[Black "Principe, Gerson"]
[Result "1/2-1/2"]
[ECO "B12"]
[PlyCount "77"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Bxd3 5. Qxd3 e6 6. Nc3 Bb4 7. Nge2 Ne7 8. Bg5 Nd7 9. Bxe7 Qxe7 10. a3 Bxc3+ 11. Qxc3 0-0 12. 0-0 c5 13. Qe3 Rfc8 14. c3 Rc7 15. Rac1 Rac8 16. h3 b5 17. b4 cxd4 18. cxd4 Rc4 19. Rc3 Nb6 20. Rfc1 Na4 21. Rxc4 dxc4 22. Nc3 Nxc3 23. Qxc3 Rd8 24. Rd1 Rd5 25. f4 f6 26. Rd2 fxe5 27. dxe5 Qd7 28. Rxd5 Qxd5 29. Kf2 Kf7 30. Qe3 Kg6 31. Qg3+ Kf7 32. Qe3 Qd7 33. Qc3 Qd1 34. Ke3 Qg1+ 35. Kf3 Qf1+ 36. Kg3 Qb1 37. Qd4 Qb3+ 38. Kg4 Kg6 39. Qe4+ 1/2-1/2

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.04"]
[Round "5"]
[White "Ravelo, Javier"]
[Black "Arias, Miguel Antonio"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "103"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 h6 5. 0-0 d6 6. h3 Nf6 7. c3 0-0 8. Re1 Re8 9. Be3 Bxe3 10. fxe3 Na5 11. Bb5 Bd7 12. Bxd7 Qxd7 13. c4 c5 14. Nc3 Nc6 15. d4 Rad8 16. Qd2 b6 17. Rad1 cxd4 18. exd4 exd4 19. Nxd4 Nxd4 20. Qxd4 Re6 21. Re3 Qe7 22. e5 Ne8 23. Nb5 Kf8 24. exd6 Qf6 25. Rxe6 Qxe6 26. d7 Nf6 27. Qd6+ Qxd6 28. Rxd6 a6 29. Nc7 Rxd7 30. Rxd7 Nxd7 31. Nxa6 Ne5 32. b3 Nd3 33. Kf1 Ke7 34. Ke2 Nf4+ 35. Kf3 Nd3 36. Ke4 Ne1 37. g3 Nc2 38. Kd3 Ne1+ 39. Ke2 Nc2 40. Kd2 Nd4 41. Nb4 Kd6 42. g4 Kc5 43. Kd3 Ne6 44. Nd5 b5 45. h4 g5 46. h5 Ng7 47. Ke4 bxc4 48. bxc4 Kxc4 49. Ne3+ Kb4 50. Nf5 Nxf5 51. Kxf5 Ka3 52. Kf6 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.03"]
[Round "3"]
[White "Henriquez Villagra, Cristobal"]
[Black "Arias, Miguel Antonio"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2063"]
[PlyCount "131"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Bc5 5. 0-0 d6 6. h3 0-0 7. d3 h6 8. Be3 Bb6 9. a3 Ne7 10. b4 c6 11. Bxb6 Qxb6 12. Bb3 Be6 13. Bxe6 fxe6 14. Na4 Qc7 15. c4 b5 16. Nb2 a6 17. c5 d5 18. Re1 Ng6 19. Qb3 Kh7 20. Qc3 Rfe8 21. a4 Nd7 22. Nd2 Nf6 23. f3 d4 24. Qb3 Qe7 25. axb5 axb5 26. Ra3 Rxa3 27. Qxa3 Qb7 28. Ra1 Nf4 29. Qa7 Rb8 30. Qxb7 Rxb7 31. Ra6 Rc7 32. Nb3 Ng6 33. Kf2 Nh5 34. g3 Ne7 35. Nd1 g5 36. Kg2 Kg6 37. Nf2 Nf6 38. Na5 Kf7 39. g4 Kg6 40. Nh1 Nh7 41. Ng3 Nf6 42. Kf2 Nh7 43. Rb6 Nf6 44. Ne2 Nd7 45. Nc1 Nxb6 46. cxb6 Rc8 47. b7 Rb8 48. Ncb3 Kf6 49. Nc5 Rd8 50. Na6 Kf7 51. b8Q Rxb8 52. Nxb8 Ke8 53. Naxc6 Ng6 54. Na6 Kd7 55. Na7 Nf4 56. Nc5+ Kc7 57. Nxb5+ Kb6 58. Na3 Nxh3+ 59. Ke2 Ng1+ 60. Kf1 Nxf3 61. Kf2 Nh2 62. Nc4+ Kb5 63. Nxe6 Kxb4 64. Nxe5 Kc3 65. Kg2 Nxg4 66. Nxg4 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "2"]
[White "Arias, Miguel Antonio"]
[Black "Ospina, Carl Erik"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "86"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. b3 cxd4 5. Qxd4 Nc6 6. Qe3 Nb4 7. Bd3 Bd7 8. a3 Nc6 9. Bb2 g6 10. f4 Bg7 11. Nf3 Nge7 12. Nbd2 0-0 13. 0-0 Nc8 14. Rac1 Qb6 15. Qf2 Qxf2+ 16. Rxf2 Nb6 17. c4 dxc4 18. Nxc4 Nxc4 19. Bxc4 Rac8 20. Rfc2 Ne7 21. Kf2 Bc6 22. b4 Bxf3 23. Kxf3 Rfd8 24. Bb3 Rd3+ 25. Kf2 Rxb3 26. Rxc8+ Nxc8 27. Rxc8+ Bf8 28. Bd4 Kg7 29. Bxa7 Rxa3 30. Bc5 Bxc5+ 31. Rxc5 Ra7 32. Rc7 Ra2+ 33. Kg3 Kf8 34. Rxb7 Rb2 35. b5 h6 36. b6 Ke8 37. Kh3 Rd2 38. Rc7 Rb2 39. b7 Rb3+ 40. g3 h5 41. Rc8+ Kd7 42. b8Q Rxb8 43. Rxb8 Ke7 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "1"]
[White "Quintero Gomez, Juan David"]
[Black "Arias, Miguel Antonio"]
[Result "0-1"]
[ECO "C62"]
[PlyCount "68"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 d6 5. d4 exd4 6. Nxd4 Bd7 7. 0-0 Nxd4 8. Bxd7+ Qxd7 9. Qxd4 Be7 10. Rd1 0-0 11. Bf4 Rfd8 12. e5 dxe5 13. Qxd7 Rxd7 14. Rxd7 Nxd7 15. Rd1 exf4 16. Rxd7 Bd6 17. Nd5 Re8 18. h3 Re1+ 19. Kh2 f3+ 20. Rxd6 cxd6 21. gxf3 Re2 22. b3 Rxf2+ 23. Kg3 Rxc2 24. Nb4 Rb2 25. Kf4 a5 26. Nd3 Rxa2 27. b4 axb4 28. Ke3 b3 29. Nc1 Ra1 30. Nd3 Ra3 31. Kd2 b2 32. Nxb2 Rxf3 33. Kc2 f5 34. Kd2 b5 0-1

