[Event "Medellin Amateur 17th"]
[Site "Medellin"]
[Date "2010.08.08"]
[Round "8.27"]
[White "Perez Arrieta, Alex"]
[Black "Valencia Gomez, Daniel"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "1583"]
[BlackElo "1706"]
[PlyCount "83"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Bf5 4. Nf3 Nf6 5. e3 e6 6. cxd5 exd5 7. Bd3 Bxd3 8. Qxd3 Nbd7 9. 0-0 Be7 10. h3 0-0 11. Nh2 Qc7 12. f4 Bb4 13. a3 Bxc3 14. bxc3 Ne4 15. c4 f5 16. c5 Ndf6 17. Nf3 Ng3 18. Re1 Nfe4 19. Ne5 Qd8 20. Bd2 Qe7 21. Rab1 Rab8 22. Red1 Rfc8 23. Be1 b5 24. Bxg3 Nxg3 25. Kh2 Ne4 26. Rg1 Qh4 27. g3 Qh5 28. Rg2 Rb7 29. Rbg1 Rcc7 30. g4 fxg4 31. Nxg4 b4 32. axb4 Rxb4 33. Qxe4 dxe4 34. Nf6+ Kf8 35. Nxh5 g6 36. Nf6 a5 37. Re2 Re7 38. Ng4 a4 39. Ne5 Rc7 40. Ra1 Kg7 41. Rea2 h5 42. Rg1 1-0

[Event "Medellin Amateur 17th"]
[Site "Medellin"]
[Date "2010.08.07"]
[Round "7.28"]
[White "Perez Arrieta, Alex"]
[Black "Gomez, Saint Smith"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "1583"]
[BlackElo "1664"]
[PlyCount "88"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. Nf3 Nf6 5. e3 Nbd7 6. cxd5 exd5 7. Bd3 Bd6 8. 0-0 0-0 9. Re1 Qc7 10. Qc2 h6 11. e4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Nf6 14. h3 Bd7 15. Bd3 Nd5 16. Bd2 Rfe8 17. Bc4 Nb6 18. Bb3 Rxe1+ 19. Rxe1 Re8 20. Rxe8+ Bxe8 21. Qe4 Qe7 22. Qxe7 Bxe7 23. Bc3 Kf8 24. Nd2 Nd7 25. Ne4 f5 26. Ng3 Bg6 27. Bc2 f4 28. Bxg6 fxg3 29. fxg3 Nf6 30. Kf1 Nd5 31. Be4 Nxc3 32. bxc3 Bd6 33. g4 Ke7 34. Ke2 Ke6 35. Kd3 Bg3 36. c4 Kd6 37. a4 b6 38. Bg6 a6 39. Ke4 Bf2 40. Be8 Bg1 41. d5 cxd5+ 42. cxd5 Bh2 43. Bc6 Be5 44. Kf5 Bf6 1/2-1/2

[Event "Medellin Amateur 17th"]
[Site "Medellin"]
[Date "2010.08.06"]
[Round "5.29"]
[White "Corredor, Jose"]
[Black "Perez Arrieta, Alex"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "1649"]
[BlackElo "1583"]
[PlyCount "89"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Bf4 Nf6 5. e3 Bb4+ 6. Nbd2 Ne4 7. a3 Bxd2+ 8. Nxd2 Nxd2 9. Qxd2 0-0 10. Bd3 dxc4 11. Bxc4 Nd7 12. 0-0 Nf6 13. Bd3 Nh5 14. Bg3 h6 15. Qe2 Nxg3 16. hxg3 b6 17. Be4 Bb7 18. Rac1 Qd7 19. Rc3 Rac8 20. Rfc1 Rc7 21. g4 f5 22. gxf5 exf5 23. Bf3 f4 24. Qc4+ Kh8 25. e4 Rfc8 26. Qd3 Qe7 27. e5 c5 28. Bxb7 Rxb7 29. Qe4 Rf8 30. d5 f3 31. e6 Qg5 32. g3 Rbb8 33. d6 Qh5 34. e7 Rg8 35. d7 Qh3 36. Rxf3 Qxd7 37. Kg2 Rbe8 38. Rf7 Qd2 39. Rh1 Qd6 40. g4 Qd2 41. Rh5 Qd6 42. g5 Rgf8 43. Rxh6+ Qxh6 44. Rxf8+ Rxf8 45. exf8Q# 1-0

[Event "Medellin Amateur 17th"]
[Site "Medellin"]
[Date "2010.08.05"]
[Round "2.13"]
[White "Perez Arrieta, Alex"]
[Black "Castrillon, Juan M"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "1583"]
[BlackElo "1675"]
[PlyCount "92"]
[EventDate "2010.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 Bf5 3. Nc3 e6 4. Nf3 c6 5. cxd5 cxd5 6. Bf4 Bd6 7. Bxd6 Qxd6 8. e3 a6 9. Qb3 b5 10. a4 b4 11. Na2 Nc6 12. Rc1 Nge7 13. Ne5 0-0 14. Bd3 Nxe5 15. dxe5 Qxe5 16. Bxf5 Nxf5 17. Qxb4 Rab8 18. Qc3 d4 19. Qd2 dxe3 20. fxe3 Rxb2 21. Rc2 Rxc2 22. Qxc2 Qxe3+ 23. Qe2 Rb8 24. Qxe3 Nxe3 25. Kd2 Rb2+ 26. Kxe3 Rxa2 27. Rc1 Kf8 28. Rc4 Rxg2 29. h4 Rg3+ 30. Kf4 Ra3 31. Ke5 Re3+ 32. Kd6 Rd3+ 33. Kc6 Ke7 34. Kb6 Rd6+ 35. Kb7 f5 36. a5 e5 37. Rb4 e4 38. Rb3 f4 39. Rb6 e3 40. Kxa6 e2 41. Ka7 Rxb6 42. axb6 e1Q 43. h5 Qa5+ 44. Kb7 Kf6 45. h6 gxh6 46. Kc7 f3 0-1

[Event "COL-ch School U15"]
[Site "Neiva"]
[Date "2010.03.20"]
[Round "8.1"]
[White "Contreras, Miguel Angel"]
[Black "Perez Arrieta, Alex"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2094"]
[PlyCount "39"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Bxc6 dxc6 5. d3 Bg4 6. 0-0 Bc5 7. h3 Bh5 8. Re1 0-0 9. Be3 Bb6 10. Bxb6 cxb6 11. d4 Bxf3 12. Qxf3 Qxd4 13. Nc3 Qb4 14. b3 Rad8 15. Rad1 Rd4 16. Ne2 Rxd1 17. Rxd1 Qxe4 18. Qxe4 Nxe4 19. Rd7 f6 20. b4 1/2-1/2

[Event "COL-ch School U15"]
[Site "Neiva"]
[Date "2010.03.20"]
[Round "7.1"]
[White "Perez Arrieta, Alex"]
[Black "Portilla Garcia, Wilfer Ernesto"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "28"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 e6 2. e4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bg5 Be7 6. Bd3 Bg4 7. h3 Bxf3 8. Qxf3 Nbd7 9. Nc3 c6 10. 0-0 0-0 11. Ne2 Qb6 12. b3 Rfe8 13. Ng3 Rad8 14. h4 g6 0-1

[Event "COL-ch School U15"]
[Site "Neiva"]
[Date "2010.03.19"]
[Round "6.1"]
[White "Marin Rengifo, Andres Fernando"]
[Black "Perez Arrieta, Alex"]
[Result "0-1"]
[ECO "C62"]
[PlyCount "45"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 d6 4. Bb5 Bd7 5. Bxc6 Bxc6 6. 0-0 Nf6 7. d3 h6 8. b4 Be7 9. b5 Bd7 10. h3 Nh7 11. d4 exd4 12. Nxd4 Bf6 13. Be3 Bxd4 14. Qxd4 0-0 15. a4 Ng5 16. Bxg5 Qxg5 17. g4 h5 18. Qd3 hxg4 19. hxg4 Bxg4 20. Qg3 Qg6 21. Kg2 Bh5 22. Qxg6 Bxg6 23. Rac1 0-1

[Event "COL-ch School U15"]
[Site "Neiva"]
[Date "2010.03.19"]
[Round "5.1"]
[White "Perez Arrieta, Alex"]
[Black "Abril Bernal, Jhonatan"]
[Result "1/2-1/2"]
[ECO "C55"]
[BlackElo "2009"]
[PlyCount "68"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. h3 Be7 4. Bc4 Nf6 5. d3 Nc6 6. Nc3 0-0 7. Bg5 h6 8. Bxf6 Bxf6 9. Nd5 Be6 10. Qe2 Re8 11. c3 Rb8 12. Nh2 Na5 13. Nxf6+ Qxf6 14. Bxe6 Qxe6 15. 0-0 Nc6 16. Ng4 Ne7 17. Ne3 d5 18. exd5 Nxd5 19. Nxd5 Qxd5 20. Qe4 Qxe4 21. dxe4 Rbd8 22. Rad1 Kf8 23. f3 Ke7 24. Kf2 f6 25. Ke3 Ke6 26. g3 g6 27. f4 exf4+ 28. gxf4 Rxd1 29. Rxd1 Re7 30. Rd4 Rd7 31. f5+ gxf5 32. exf5+ Ke7 33. Rxd7+ Kxd7 34. Kf4 Kd6 1/2-1/2

[Event "COL-ch School U15"]
[Site "Neiva"]
[Date "2010.03.18"]
[Round "4.1"]
[White "Chaux, Jesus David"]
[Black "Perez Arrieta, Alex"]
[Result "0-1"]
[ECO "C45"]
[PlyCount "32"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Bc4 0-0 8. Qh5 Nxd4 9. Bd3 Nc2+ 10. Bxc2 Bxe3 11. fxe3 Ng6 12. Nd2 d6 13. Nf3 Ne5 14. Ng5 h6 15. Nf3 Bg4 16. Qh4 Nxf3+ 0-1

[Event "COL-ch School U15"]
[Site "Neiva"]
[Date "2010.03.18"]
[Round "3.1"]
[White "Mayorquin Polanco, Nicolas"]
[Black "Perez Arrieta, Alex"]
[Result "1-0"]
[ECO "C66"]
[WhiteElo "1851"]
[PlyCount "47"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 d6 5. Re1 Bd7 6. c3 a6 7. Ba4 b5 8. Bb3 Be7 9. d4 exd4 10. cxd4 Bg4 11. Be3 0-0 12. Nbd2 h6 13. Rc1 Na5 14. e5 dxe5 15. dxe5 Nd5 16. Bxd5 Qxd5 17. Rxc7 Bb4 18. a3 Bxd2 19. Qxd2 Bxf3 20. gxf3 Qxd2 21. Bxd2 Nc4 22. Bc3 Rfe8 23. b3 Nxa3 24. Bb4 1-0

[Event "COL-ch School U15"]
[Site "Neiva"]
[Date "2010.03.17"]
[Round "1.1"]
[White "Perez Arrieta, Alex"]
[Black "Abril Bernal, Jhonatan"]
[Result "1-0"]
[ECO "C55"]
[BlackElo "2009"]
[PlyCount "41"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Bc4 Be7 4. d3 Nf6 5. Nc3 Nc6 6. Be3 Bg4 7. h3 Bh5 8. Qd2 Bxf3 9. gxf3 Na5 10. 0-0-0 Qd7 11. Bb5 c6 12. Ba4 b5 13. Bb3 Nxb3+ 14. cxb3 a6 15. Kb1 h6 16. Rdg1 g5 17. h4 d5 18. hxg5 d4 19. gxf6 dxe3 20. Qxe3 Bxf6 21. Rxh6 1-0

[Event "COL-ch School U15"]
[Site "Neiva"]
[Date "2010.03.17"]
[Round "2.1"]
[White "Perez Arrieta, Alex"]
[Black "Hernandez Torres, Alex Daniel"]
[Result "0-1"]
[ECO "D07"]
[BlackElo "1913"]
[PlyCount "48"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. Nc3 e6 4. Nf3 Nc6 5. c5 b6 6. cxb6 axb6 7. Bg5 h6 8. Bh4 Be7 9. e3 0-0 10. Bxf6 Bxf6 11. Bd3 Bb7 12. 0-0 Qd7 13. Re1 Rae8 14. a3 e5 15. dxe5 Nxe5 16. Nxe5 Rxe5 17. f4 Re7 18. Bc2 Rfe8 19. Qd3 g6 20. Bb3 Kg7 21. Qd2 d4 22. exd4 Qxd4+ 23. Qxd4 Bxd4+ 24. Kf1 Ba6+ 0-1

[Event "Bogota Intercolegiados 30th"]
[Site "Bogota"]
[Date "2009.10.01"]
[Round "5.6"]
[White "Villarreal Gongora, Jorge A"]
[Black "Perez Arrieta, Alex"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1923"]
[BlackElo "1570"]
[PlyCount "63"]
[EventDate "2009.09.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 Qxc6 7. Bd3 Ne7 8. 0-0 d6 9. Nc3 a6 10. Kh1 Be6 11. f4 0-0-0 12. Qe2 d5 13. f5 Bd7 14. exd5 Nxd5 15. Nxd5 Qxd5 16. Bc4 Qc6 17. Bxf7 Rhf8 18. Qc4 Bb6 19. Bg5 Qxc4 20. Bxc4 Rde8 21. f6 gxf6 22. Rxf6 Rxf6 23. Bxf6 Bf5 24. c3 Ba7 25. h3 b5 26. Bb3 Re2 27. Rd1 Be4 28. Be6+ Kb7 29. Bd5+ Bxd5 30. Rxd5 Rxb2 31. Rd7 Rxa2 32. Rxh7 1-0

[Event "Bogota Intercolegiados 30th"]
[Site "Bogota"]
[Date "2009.09.30"]
[Round "4.9"]
[White "Perez Arrieta, Alex"]
[Black "Cardenas, Joan Sebastian"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "1570"]
[BlackElo "1660"]
[PlyCount "73"]
[EventDate "2009.09.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nc6 4. e3 Nge7 5. Nf3 g6 6. cxd5 exd5 7. Bb5 Be6 8. Bd2 Bg7 9. 0-0 0-0 10. Bxc6 Nxc6 11. Re1 a6 12. a3 b5 13. b4 Qf6 14. h3 Rad8 15. Rc1 Ne7 16. e4 h6 17. e5 Qf5 18. g4 Qd3 19. Re3 Qc4 20. Ne2 Qa2 21. Rc2 Qxc2 22. Qxc2 c6 23. Ng3 Rc8 24. Re1 Rfe8 25. Qc1 Kh7 26. Qc2 Kg8 27. Nh2 Kh7 28. h4 Kg8 29. Kg2 Rc7 30. Rh1 Kf8 31. Qc1 Ng8 32. f4 Bc8 33. f5 f6 34. fxg6 fxe5 35. Rf1+ Ke7 36. Rf7+ Kd6 37. Qc5+ 1-0

[Event "Bogota Intercolegiados 30th"]
[Site "Bogota"]
[Date "2009.09.29"]
[Round "1.1"]
[White "Martinez Romero, Martin"]
[Black "Perez Arrieta, Alex"]
[Result "1-0"]
[ECO "A27"]
[WhiteElo "2168"]
[BlackElo "1570"]
[PlyCount "47"]
[EventDate "2009.09.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nc6 2. c4 e5 3. Nc3 d6 4. g3 Be6 5. b3 Be7 6. Bg2 Qd7 7. d4 exd4 8. Nxd4 Bf6 9. Be3 Nge7 10. Nd5 Bxd5 11. cxd5 Nb4 12. Qd2 Nbxd5 13. Bg5 c5 14. Bxf6 Nxf6 15. Nc2 0-0 16. 0-0-0 Rad8 17. e4 Nc6 18. f4 Rfe8 19. Rhe1 h6 20. Qc3 Qc7 21. Ne3 Nb4 22. Kb2 Nxe4 23. Bxe4 Rxe4 24. Nf5 1-0

[Event "Bogota Intercolegiados 30th"]
[Site "Bogota"]
[Date "2009.09.29"]
[Round "2.11"]
[White "Perez Arrieta, Alex"]
[Black "Sandoval Guerrero, Juan David"]
[Result "1/2-1/2"]
[ECO "D20"]
[WhiteElo "1570"]
[BlackElo "1500"]
[PlyCount "137"]
[EventDate "2009.09.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. Nc3 dxc4 4. e3 Bf5 5. Bxc4 e6 6. Bd3 Bxd3 7. Qxd3 Qd7 8. Bd2 Nc6 9. Nf3 h6 10. 0-0 Bd6 11. Nb5 Be5 12. Qc2 Bd6 13. Nxd6+ Qxd6 14. Bc3 0-0-0 15. Ne5 Rhf8 16. Rac1 Nd7 17. Nxc6 Qxc6 18. Bb4 Qxc2 19. Rxc2 Rg8 20. Rfc1 c6 21. Ba5 Rde8 22. e4 Nf6 23. e5 Nd5 24. Bd2 g5 25. b4 Kd7 26. a4 Rc8 27. a5 b6 28. axb6 Nxb6 29. Ra1 Ra8 30. Rca2 Nc8 31. Ra6 Rf8 32. b5 cxb5 33. R1a5 Rb8 34. Bb4 Rd8 35. Bc5 Ke8 36. Bd6 Nxd6 37. exd6 Rd7 38. g3 b4 39. Ra1 b3 40. Rb1 b2 41. Kf1 Rb6 42. Rxb6 axb6 43. Rxb2 Rxd6 44. Rb4 Kd7 45. Ke2 Kc6 46. Ke3 Kd5 47. Kd3 f5 48. f3 h5 49. h3 Kc6 50. f4 g4 51. hxg4 hxg4 52. Kc4 Rd8 53. Rb1 Rh8 54. Re1 b5+ 55. Kd3 Kd5 56. Re5+ Kd6 57. Rxb5 Rh3 58. Rb6+ Ke7 59. Rb7+ Kf6 60. Rb6 Rxg3+ 61. Ke2 Ke7 62. Rb7+ Kd8 63. d5 exd5 64. Rb5 Rf3 65. Rxd5+ Kc7 66. Rxf5 Ra3 67. Rg5 g3 68. Kf1 Rf3+ 69. Kg2 1/2-1/2

[Event "Armenia Nal Colegial A"]
[Site "Armenia"]
[Date "2008.10.30"]
[Round "3.8"]
[White "Eraso Rosero, Herman Gabriel"]
[Black "Perez Arrieta, Alex"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "50"]
[EventDate "2008.10.01"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 h6 6. Be3 Bb6 7. 0-0 d6 8. h3 Bd7 9. Nd5 Nxd5 10. Bxd5 Qe7 11. c3 0-0-0 12. b4 g5 13. a4 g4 14. hxg4 Bxg4 15. Bxc6 bxc6 16. d4 exd4 17. cxd4 a6 18. Qe2 Qxe4 19. Qxa6+ Kd7 20. Qe2 Rdg8 21. Rfd1 Bxf3 22. Qc4 Bxg2 23. Qxf7+ Kc8 24. Qf4 Bh3+ 25. Kh2 Qg2# 0-1

[Event "Armenia Nal Colegial A"]
[Site "Armenia"]
[Date "2008.10.29"]
[Round "1"]
[White "Mattos Fonseca, Adrian David"]
[Black "Perez Arrieta, Alex"]
[Result "0-1"]
[ECO "C64"]
[PlyCount "40"]
[EventDate "2008.10.01"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. Bxc6 dxc6 5. 0-0 Qf6 6. d3 h6 7. h3 Ne7 8. Nc3 0-0 9. a3 a5 10. b3 b5 11. Bb2 Bd4 12. Nxd4 exd4 13. Ne2 c5 14. Qd2 Nc6 15. b4 axb4 16. axb4 Rxa1 17. Bxa1 cxb4 18. Qf4 Qxf4 19. Nxf4 Be6 20. Ne2 b3 0-1

[Event "Armenia Nal Colegial A"]
[Site "Armenia"]
[Date "2008.10.01"]
[Round "4.3"]
[White "Ospina, Carl Erik"]
[Black "Perez Arrieta, Alex"]
[Result "1-0"]
[ECO "D52"]
[WhiteElo "1989"]
[PlyCount "81"]
[EventDate "2008.10.01"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 e6 5. e3 Bb4 6. Rc1 Nbd7 7. Nf3 h6 8. Bh4 b6 9. cxd5 cxd5 10. a3 Be7 11. Bd3 Bb7 12. Bxf6 Bxf6 13. Nb5 0-0 14. Nd6 Rb8 15. 0-0 Be7 16. Nxb7 Rxb7 17. Bb5 Nf6 18. Bd3 Nh7 19. Bxh7+ Kxh7 20. Qd3+ f5 21. Rc6 Rf6 22. Rfc1 Bd6 23. Qa6 Qd7 24. Rxd6 Rc7 25. Rxd7 Rxc1+ 26. Qf1 Rxf1+ 27. Kxf1 Rf8 28. Rxa7 Rc8 29. Ne1 Kg6 30. Ke2 Kf6 31. Kd3 g5 32. Nc2 h5 33. h3 h4 34. f3 g4 35. f4 gxh3 36. gxh3 Kg6 37. Re7 Rc6 38. Kd2 Kh6 39. Nb4 Rd6 40. Re8 Kh7 41. Nd3 1-0

[Event "Armenia Nal Colegial A"]
[Site "Armenia"]
[Date "2008.10.01"]
[Round "5.7"]
[White "Perez Arrieta, Alex"]
[Black "Daza, Armando Jose"]
[Result "1-0"]
[ECO "B06"]
[PlyCount "80"]
[EventDate "2008.10.01"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. c3 d6 4. Be2 Nf6 5. d3 0-0 6. Bg5 Be6 7. Nbd2 c5 8. d4 cxd4 9. cxd4 Bg4 10. h3 Bxf3 11. Bxf3 Nc6 12. d5 Ne5 13. 0-0 Nxf3+ 14. Qxf3 Nd7 15. Qb3 b6 16. Be3 Nc5 17. Bxc5 bxc5 18. Rab1 Rb8 19. Qc2 Qd7 20. Kh1 Rb7 21. Nc4 Rfb8 22. b3 Qc7 23. f4 Rb4 24. Rfe1 a6 25. e5 dxe5 26. fxe5 Rd8 27. Rbd1 Rd7 28. d6 exd6 29. exd6 Qd8 30. Qe4 Rb8 31. Qd5 Bd4 32. Rf1 Kg7 33. Rf3 Qf8 34. Rdf1 Rbd8 35. h4 h5 36. Nb6 Ra7 37. d7 f6 38. b4 Qf7 39. Qe4 Be5 40. Qxe5 cxb4 1-0

