[Event "Pereira Easter op"]
[Site "Pereira"]
[Date "2021.04.04"]
[Round "6"]
[White "Arias Arias, Yeison"]
[Black "Arias, Oscar Eduardo"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1623"]
[PlyCount "26"]
[EventDate "2021.04.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. Nc3 Nf6 3. Nf3 g6 4. h3 Bg7 5. Bc4 e5 6. d3 c6 7. a4 0-0 8. 0-0 Qe7 9. Re1 Be6 10. Bxe6 Qxe6 11. Be3 Na6 12. Rb1 d5 13. exd5 cxd5 1-0

[Event "Pereira Easter op"]
[Site "Pereira"]
[Date "2021.04.03"]
[Round "5"]
[White "Arias, Oscar Eduardo"]
[Black "Pinillo Canon, Silvana"]
[Result "1/2-1/2"]
[ECO "C44"]
[BlackElo "1749"]
[PlyCount "81"]
[EventDate "2021.04.01"]
[EventType "swiss"]
[EventRounds "7"]
[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. d3 Nf6 4. g3 d5 5. Nbd2 Bc5 6. Bg2 dxe4 7. dxe4 0-0 8. 0-0 Bb6 9. c3 Re8 10. Qc2 Be6 11. Ng5 Qd7 12. Nxe6 Qxe6 13. Nf3 h6 14. Nh4 Ne7 15. Kh1 c6 16. a4 a5 17. b4 axb4 18. cxb4 Bd4 19. Rb1 b6 20. Nf5 c5 21. f4 Red8 22. fxe5 Qxe5 23. Bf4 Qe6 24. bxc5 Bxc5 25. Nxe7+ Qxe7 26. e5 Nd5 27. Qb3 Nb4 28. Bxa8 Rxa8 29. Bd2 Nc6 30. Qf3 Rc8 31. Qg4 Rd8 32. Bxh6 Qxe5 33. Rbe1 Qc3 34. Qf5 Qc4 35. Bxg7 Kxg7 36. Qf6+ Kg8 37. Rf5 Be3 38. Rxe3 Qc1+ 39. Kg2 Qxe3 40. Rg5+ Kf8 41. Rf5 1/2-1/2

[Event "Pereira Easter op"]
[Site "Pereira"]
[Date "2021.04.03"]
[Round "4"]
[White "Cruz Duque, Esteban"]
[Black "Arias, Oscar Eduardo"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "37"]
[EventDate "2021.04.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. e5 dxe5 6. dxe5 Qxd1+ 7. Rxd1 Ng8 8. Nd5 Bxe5 9. Nf3 Bd6 10. c4 Nd7 11. b4 b6 12. Bf4 e5 13. Nxe5 Nxe5 14. c5 Nf3+ 15. gxf3 Bxf4 16. Nxf4 Ne7 17. Nd5 Nxd5 18. Bb5+ Bd7 19. c6 0-1

[Event "Pereira Easter op"]
[Site "Pereira"]
[Date "2021.04.02"]
[Round "3"]
[White "Arias, Oscar Eduardo"]
[Black "Serna, Luis Orlando"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "68"]
[EventDate "2021.04.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Nf6 6. Bg2 Be7 7. 0-0 0-0 8. Re1 Re8 9. e5 Nd7 10. c3 b6 11. c4 Bb7 12. Nf1 Qc7 13. cxd5 exd5 14. Bf4 Qd8 15. Qd2 Nf8 16. h4 Ne6 17. Ne3 Nxf4 18. gxf4 Bxh4 19. Nxd5 Bxf2+ 20. Kxf2 Qxd5 21. Rh1 Rad8 22. Ne1 Qd4+ 23. Kg3 Re6 24. Rh3 Rg6+ 25. Kh2 Ne7 26. Nf3 Qxd3 27. Qf2 Rg4 28. e6 Bxf3 29. exf7+ Kxf7 30. Bxf3 Qd2 31. Be2 Qxf4+ 32. Qxf4+ Rxf4 33. Rxh7 Rf2+ 34. Kg3 Rxe2 0-1

[Event "Pereira Easter op"]
[Site "Pereira"]
[Date "2021.04.01"]
[Round "1"]
[White "Arias, Oscar Eduardo"]
[Black "Velasquez, Andres Felipe"]
[Result "1/2-1/2"]
[ECO "A05"]
[BlackElo "1863"]
[PlyCount "50"]
[EventDate "2021.04.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d3 Bg7 4. g3 d6 5. Bg2 Nc6 6. 0-0 Nf6 7. Re1 Qc7 8. Nbd2 0-0 9. Nf1 Rb8 10. c3 Bg4 11. h3 Bxf3 12. Qxf3 b5 13. Be3 Nd7 14. Qd1 b4 15. Qd2 bxc3 16. bxc3 Qa5 17. Rac1 Qa3 18. Re2 Nb6 19. f4 Na4 20. e5 Na5 21. c4 Rb2 22. Rc2 Rxc2 23. Qxc2 dxe5 24. Bc1 Qb4 25. Bd2 Qa3 1/2-1/2

[Event "COL-ch U1700"]
[Site "Pereira"]
[Date "2019.03.23"]
[Round "4"]
[White "Arias, Oscar Eduardo"]
[Black "Acero Vargas, Cristian Camilo"]
[Result "0-1"]
[ECO "B18"]
[WhiteElo "1670"]
[BlackElo "1547"]
[PlyCount "80"]
[EventDate "2019.03.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Bd3 e6 8. 0-0 Ngf6 9. Re1 Be7 10. c4 0-0 11. h3 Qc7 12. Ne5 Nxe5 13. dxe5 Nd7 14. Bxg6 hxg6 15. Qd4 Rfd8 16. Qc3 Nc5 17. Be3 Rd3 18. Qc2 Rad8 19. b4 Na6 20. a3 b6 21. Nf1 c5 22. b5 Nb8 23. Bc1 R8d7 24. Bb2 Bg5 25. Rad1 Qd8 26. Rxd3 Rxd3 27. a4 Qd7 28. Qe2 Rb3 29. g3 Qd3 30. f4 Be7 31. Kf2 Qf5 32. Bc1 g5 33. Rd1 gxf4 34. Bxf4 g5 35. Ne3 Qxh3 36. Qc2 Rxe3 37. Kxe3 gxf4+ 38. Kxf4 Qh5 39. g4 Bg5+ 40. Kf3 Qh3+ 0-1

[Event "COL-ch U1700"]
[Site "Pereira"]
[Date "2019.03.23"]
[Round "5"]
[White "Ramos Ortiz, Carlos Alberto"]
[Black "Arias, Oscar Eduardo"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "1462"]
[BlackElo "1670"]
[PlyCount "123"]
[EventDate "2019.03.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 0-0 6. 0-0 a5 7. Nd5 Bd6 8. d3 Nxd5 9. cxd5 Nb4 10. a3 Na6 11. b4 c6 12. dxc6 dxc6 13. bxa5 Qxa5 14. Be3 Re8 15. Ng5 h6 16. Ne4 Bf8 17. Bxh6 gxh6 18. Nf6+ Kh8 19. Nxe8 Qd8 20. f4 exf4 21. Rxf4 Qxe8 22. Qb3 Qe6 23. Qc2 Qe7 24. Raf1 Be6 25. d4 Bg7 26. Qe4 Rd8 27. Rxf7 Qd6 28. Rxb7 Bd5 29. Qe7 Bxd4+ 30. e3 Qxe7 31. Rxe7 Bc5 32. Re5 Bxa3 33. Bxd5 cxd5 34. Rh5 Bf8 35. Rxf8+ Rxf8 36. Rxh6+ Kg7 37. Rxa6 Rf3 38. Rd6 Rxe3 39. Rxd5 Re2 40. Rf5 Kg6 41. Rf2 Re4 42. Kg2 Rc4 43. h4 Kh5 44. Kh3 Rc1 45. g4+ Kg6 46. h5+ Kh6 47. Rf6+ Kg7 48. Rg6+ Kh7 49. Kh4 Rc5 50. Rg5 Rc1 51. Rf5 Kh6 52. Rf6+ Kg7 53. Kg5 Rc5+ 54. Rf5 Rc6 55. h6+ Kh7 56. Rf7+ Kh8 57. Rf6 Rc8 58. Kh5 Kh7 59. Rf7+ Kg8 60. Kg6 Rc6+ 61. Rf6 Rc7 62. h7+ 1-0

[Event "COL-ch U1700"]
[Site "Pereira"]
[Date "2019.03.22"]
[Round "2"]
[White "Arias, Oscar Eduardo"]
[Black "Castano, Saray"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1670"]
[BlackElo "1584"]
[PlyCount "40"]
[EventDate "2019.03.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nf3 Nc6 4. Bb5 Bd7 5. a4 g6 6. 0-0 Bg7 7. Re1 a6 8. Bc4 Bg4 9. Bxf7+ Kf8 10. Bxg8 Kxg8 11. h3 Bxf3 12. Qxf3 Nd4 13. Qd1 e6 14. d3 Qe7 15. Nb1 Rf8 16. c3 Nc6 17. Be3 h6 18. f4 Kh7 19. f5 gxf5 20. exf5 Rxf5 0-1

[Event "COL-ch U1700"]
[Site "Pereira"]
[Date "2019.03.22"]
[Round "3"]
[White "Lopez Rayo, Isabella"]
[Black "Arias, Oscar Eduardo"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1470"]
[BlackElo "1670"]
[PlyCount "58"]
[EventDate "2019.03.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Be7 5. Nxd4 d6 6. Nc3 Nf6 7. f3 0-0 8. Be3 Ne5 9. Be2 c5 10. Nb3 b6 11. 0-0 Bb7 12. Qd2 d5 13. exd5 Nxd5 14. Nxd5 Qxd5 15. Qxd5 Bxd5 16. Bf4 Ng6 17. Bg3 h5 18. Rad1 Be6 19. f4 h4 20. Be1 Bf5 21. c3 Rfd8 22. g4 hxg3 23. hxg3 Rxd1 24. Bxd1 Bd3 25. Rf3 Rd8 26. Nd2 c4 27. Kh2 Bc5 28. b3 cxb3 29. Bxb3 Be2 0-1

[Event "Pereira Forero Cup 2nd"]
[Site "Pereira"]
[Date "2015.04.19"]
[Round "4"]
[White "Arias, Oscar Eduardo"]
[Black "Arrieta Manzano, Jesus Alberto"]
[Result "1-0"]
[ECO "C84"]
[WhiteElo "1627"]
[PlyCount "35"]
[EventDate "2015.04.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[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. Bb5 Nf6 4. d3 d6 5. c3 Be7 6. 0-0 Bd7 7. Re1 0-0 8. Nbd2 a6 9. Ba4 b5 10. Bc2 Bg4 11. h3 Bh5 12. Nf1 b4 13. Bd2 bxc3 14. Bxc3 a5 15. Ng3 Bg6 16. Nh4 Nxe4 17. Nxg6 Nxc3 18. Nxe7+ 1-0

[Event "Pereira Forero Cup 2nd"]
[Site "Pereira"]
[Date "2015.04.19"]
[Round "5"]
[White "Atehortua, Jorge Hernando"]
[Black "Arias, Oscar Eduardo"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "1889"]
[BlackElo "1627"]
[PlyCount "22"]
[EventDate "2015.04.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[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. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Nc3 Ke8 10. Bf4 Be6 11. Rad1 a6 0-1

[Event "Pereira Forero Cup 2nd"]
[Site "Pereira"]
[Date "2015.04.18"]
[Round "2"]
[White "Arias, Oscar Eduardo"]
[Black "Vargas, Eduar Misael"]
[Result "0-1"]
[ECO "B59"]
[WhiteElo "1627"]
[BlackElo "1945"]
[PlyCount "37"]
[EventDate "2015.04.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. f3 Be6 10. Be3 d5 11. exd5 Nxd5 12. Nxd5 Bxd5 13. Nc5 b6 14. Na4 Bf6 15. Nc3 Nd4 16. Bd3 Be6 17. Qd2 Rc8 18. Rad1 Be7 19. Kh1 0-1

[Event "Pereira Forero Cup 2nd"]
[Site "Pereira"]
[Date "2015.04.18"]
[Round "3"]
[White "Vallejo, Jose Luis"]
[Black "Arias, Oscar Eduardo"]
[Result "0-1"]
[ECO "A17"]
[WhiteElo "1536"]
[BlackElo "1627"]
[PlyCount "44"]
[EventDate "2015.04.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. g3 d5 4. cxd5 exd5 5. d4 Bb4 6. Bd2 0-0 7. Bg2 Nc6 8. Nf3 Bg4 9. 0-0 Bxf3 10. Bxf3 Nxd4 11. Bg2 Re8 12. Re1 c6 13. e3 Nf5 14. e4 dxe4 15. Bxe4 Bxc3 16. Bxc3 Nxe4 17. Qg4 Nxc3 18. Qxf5 Nd5 19. Rad1 Qa5 20. Rxe8+ Rxe8 21. Kf1 Qb5+ 22. Rd3 Ne3+ 0-1

[Event "Pereira Forero Cup 2nd"]
[Site "Pereira"]
[Date "2015.04.17"]
[Round "1"]
[White "Cadavid, Juan Miguel"]
[Black "Arias, Oscar Eduardo"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1904"]
[BlackElo "1627"]
[PlyCount "35"]
[EventDate "2015.04.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[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 d6 5. Nc3 Nf6 6. Be2 Be7 7. Be3 0-0 8. 0-0 Be6 9. Nxe6 fxe6 10. Bc4 Qd7 11. f4 Na5 12. Bb5 c6 13. Bd3 b5 14. e5 Ne8 15. Qh5 g6 16. Bxg6 hxg6 17. Qxg6+ Ng7 18. Ne4 1-0

[Event "Bogota McGregor op 3rd"]
[Site "Bogota"]
[Date "2012.12.16"]
[Round "8"]
[White "Nieto, Manuel Valerio Wald"]
[Black "Arias, Oscar Eduardo"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "1958"]
[PlyCount "93"]
[EventDate "2012.12.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 d6 4. c4 Nf6 5. 0-0 0-0 6. Nc3 c6 7. Rb1 h6 8. b4 Be6 9. d3 Nh7 10. Qc2 Nd7 11. Be3 a6 12. Nd4 Ndf6 13. b5 axb5 14. cxb5 cxb5 15. Nxe6 fxe6 16. Bxb7 Rb8 17. Rxb5 d5 18. Bf4 Qd7 19. Bxb8 Rxb8 20. Bc6 Qc7 21. Rxb8+ Qxb8 22. Rb1 Qc7 23. Nb5 Qe5 24. a4 Ng5 25. a5 Nh3+ 26. Kg2 Qf5 27. f3 Ng5 28. a6 Qh3+ 29. Kg1 Nh5 30. a7 Nxg3 31. a8Q+ Kh7 32. hxg3 Qxg3+ 33. Kf1 Nh3 34. e4 Qg1+ 35. Ke2 Nf4+ 36. Kd2 Qf2+ 37. Kc1 Qf1+ 38. Qd1 Ne2+ 39. Kc2 Qxf3 40. Qf1 Qe3 41. Qa7 d4 42. Qxe7 Nf4 43. Nd6 Nh5 44. Ne8 Qg3 45. Nf6+ Nxf6 46. Qfxf6 Qg2+ 47. Kb3 1-0

[Event "Bogota McGregor op 3rd"]
[Site "Bogota"]
[Date "2012.12.15"]
[Round "7"]
[White "Arias, Oscar Eduardo"]
[Black "Lozano, Ricardo"]
[Result "0-1"]
[ECO "B30"]
[BlackElo "2113"]
[PlyCount "26"]
[EventDate "2012.12.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 g6 4. Ne2 Bg7 5. c3 d6 6. Ng3 Nf6 7. d3 Rb8 8. Be2 Bd7 9. 0-0 b5 10. h3 0-0 11. Nh2 Ne8 12. f4 b4 13. c4 f5 0-1

[Event "COL-ch sf"]
[Site "Santa Rosa"]
[Date "2011.06.26"]
[Round "10"]
[White "Acosta Cruz, Luis Ivan"]
[Black "Arias, Oscar Eduardo"]
[Result "1-0"]
[ECO "D58"]
[WhiteElo "1837"]
[PlyCount "77"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. Bg5 Be7 6. e3 h6 7. Bh4 0-0 8. Bd3 d5 9. Bxf6 Bxf6 10. cxd5 exd5 11. 0-0 Nd7 12. Rc1 a6 13. Bb1 Re8 14. Ne2 Rc8 15. b4 Qe7 16. Qb3 c5 17. bxc5 b5 18. Nf4 Red8 19. Nh5 g6 20. Nxf6+ Nxf6 21. Ne5 Bc6 22. Qa3 Nd7 23. f4 Kh7 24. Rf3 f5 25. Rg3 Rg8 26. Qxa6 Nxe5 27. fxe5 Qe6 28. Qa5 Rg7 29. Rf1 Ra8 30. Qd2 Kh8 31. Qf2 b4 32. Qf4 Rh7 33. h4 h5 34. Qg5 Rg8 35. Bd3 Qe7 36. Rxf5 Qxg5 37. Rfxg5 Be8 38. Bxg6 Bxg6 39. Rxg6 1-0

[Event "COL-ch sf"]
[Site "Santa Rosa"]
[Date "2011.06.26"]
[Round "9"]
[White "Arias, Oscar Eduardo"]
[Black "Rico Hernandez, Edgar"]
[Result "0-1"]
[ECO "B13"]
[PlyCount "96"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Nf6 5. Be2 e6 6. Bf4 Bd6 7. Bxd6 Qxd6 8. Nbd2 0-0 9. 0-0 b6 10. c3 Ba6 11. Re1 Bxe2 12. Qxe2 Nc6 13. Ne5 Rac8 14. f4 Ne7 15. Qf2 Rc7 16. Kh1 b5 17. a3 a5 18. g4 b4 19. axb4 axb4 20. Re3 bxc3 21. bxc3 Rfc8 22. Qg3 Qb6 23. Rb1 Qa5 24. Qe1 Qa6 25. f5 exf5 26. Nd7 Rxd7 27. Rxe7 Rxe7 28. Qxe7 fxg4 29. Qb7 Qxb7 30. Rxb7 h5 31. Rb3 Re8 32. Kg1 Re2 33. Nf1 Ne4 34. Ng3 Nxg3 35. hxg3 Re3 36. Kf2 Rd3 37. Rb5 Rxc3 38. Rxd5 Rc2+ 39. Ke3 g6 40. Rd8+ Kg7 41. d5 Ra2 42. d6 Ra7 43. Kd4 Kf6 44. Kc5 h4 45. gxh4 g3 46. Re8 g2 47. Re1 Kf5 48. Kc6 Kg4 0-1

[Event "COL-ch sf"]
[Site "Santa Rosa"]
[Date "2011.06.25"]
[Round "7"]
[White "Arias, Oscar Eduardo"]
[Black "Montoya, Nerio Antonio"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "95"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. d4 Nc6 5. Nxd5 Qxd5 6. Be3 Bf5 7. Nf3 e6 8. a3 h6 9. Be2 0-0-0 10. 0-0 f6 11. c3 g5 12. Nd2 Qd7 13. b4 Bd6 14. Nc4 Bf4 15. Bf3 e5 16. b5 Ne7 17. Qa4 e4 18. Qxa7 Qxb5 19. Be2 Qa6 20. Qc5 Bd6 21. Nxd6+ Qxd6 22. Qa5 Kd7 23. Rab1 Ra8 24. Qb5+ Qc6 25. Qb3 Be6 26. c4 Qa6 27. d5 Bf5 28. Qb2 Qxa3 29. Qb5+ Kd6 30. Bd2 Ra4 31. Bb4+ Rxb4 32. Rxb4 b6 33. c5+ bxc5 34. Ra4 Qc3 35. Rc4 Qa3 36. Rfc1 Bd7 37. Qb1 Nxd5 38. Qc2 Bb5 39. Rxc5 Bxe2 40. Rc6+ Ke5 41. Qxe2 Qd3 42. Qg4 f5 43. f4+ Nxf4 44. R6c5+ Nd5 45. Qh5 Qe3+ 46. Kh1 Ra8 47. Qxh6 Qxc5 48. Qg7+ 1-0

[Event "COL-ch sf"]
[Site "Santa Rosa"]
[Date "2011.06.25"]
[Round "8"]
[White "Leal Cortes, Diego Fernando"]
[Black "Arias, Oscar Eduardo"]
[Result "1/2-1/2"]
[ECO "C93"]
[WhiteElo "1875"]
[PlyCount "104"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Be7 7. Re1 0-0 8. h3 d6 9. c3 h6 10. d4 exd4 11. cxd4 d5 12. e5 Nh7 13. Nc3 Be6 14. Qd3 Nb4 15. Qe2 Re8 16. a3 Nc6 17. Be3 Bf8 18. Rac1 Qd7 19. Nd2 Nxe5 20. dxe5 d4 21. Bxd4 Qxd4 22. Nf3 Qd8 23. Red1 Qc8 24. Bc2 Be7 25. Be4 Rb8 26. Bc6 Rf8 27. Nd4 Bg5 28. Nxe6 Qxe6 29. Bd7 Qb3 30. Rb1 Qc4 31. Qxc4 bxc4 32. Rd4 Rfd8 33. f4 Nf8 34. Rbd1 Bxf4 35. Rxf4 Rxd7 36. Rxd7 Nxd7 37. Rxc4 Nxe5 38. Rxc7 Rxb2 39. Rc5 Rb3 40. Ne4 Nd3 41. Ra5 Rb6 42. Kf1 g6 43. Ke2 Nc1+ 44. Kf3 Nb3 45. Rd5 Rc6 46. Rd7 Nc5 47. Rd8+ Kg7 48. Nd6 Kf6 49. Ne4+ Nxe4 50. Kxe4 Rc3 51. Rd6+ Ke7 52. Rxa6 Rc2 1/2-1/2

[Event "COL-ch sf"]
[Site "Santa Rosa"]
[Date "2011.06.24"]
[Round "5"]
[White "Arias, Oscar Eduardo"]
[Black "Zuluaga Alzate, Gustavo"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "65"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. 0-0 d5 5. Bb3 Bg4 6. h3 Bxf3 7. Qxf3 Be7 8. d3 Nf6 9. Nc3 c6 10. Re1 Nbd7 11. a3 0-0 12. Bg5 Qc7 13. Bh4 Rfe8 14. Rad1 Rad8 15. Rd2 Nc5 16. Bxf6 Bxf6 17. Ba2 Re7 18. b4 e4 19. dxe4 Bxc3 20. Qxc3 Nxe4 21. Qe3 Re6 22. Rde2 b6 23. Qd3 Rde8 24. c4 Nf6 25. cxd5 Nxd5 26. Rxe6 Rxe6 27. Rd1 Qe7 28. Bxd5 Re1+ 29. Kh2 Qe5+ 30. f4 Qxf4+ 31. g3 Rxd1 32. Qxd1 Qf2+ 33. Bg2 1-0

[Event "COL-ch sf"]
[Site "Santa Rosa"]
[Date "2011.06.24"]
[Round "6"]
[White "Martinez Arroyo, Luis Alberto"]
[Black "Arias, Oscar Eduardo"]
[Result "1-0"]
[ECO "C86"]
[WhiteElo "1711"]
[PlyCount "37"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Qe2 b5 7. Bb3 0-0 8. c3 d5 9. d3 Bg4 10. h3 Bh5 11. Rd1 Re8 12. Nbd2 Bf8 13. Nf1 h6 14. g4 Bg6 15. Ng3 Na5 16. Bc2 c5 17. Kh2 h5 18. g5 Nh7 19. Rg1 1-0

[Event "COL-ch sf"]
[Site "Santa Rosa"]
[Date "2011.06.23"]
[Round "3"]
[White "Arias, Oscar Eduardo"]
[Black "Agudelo, Carlos Hernan"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "2094"]
[PlyCount "120"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bg4 5. Be2 Bd6 6. Bg5 Ne7 7. Nbd2 0-0 8. 0-0 Nd7 9. Re1 Re8 10. c3 c6 11. h3 Bh5 12. Qc2 f6 13. Be3 Nf8 14. Nh4 Bf7 15. Bd3 Bc7 16. Nf1 g6 17. f4 f5 18. Qf2 Nd7 19. Nf3 Nf6 20. Ne5 Be6 21. Nd2 Kg7 22. Ndf3 Ne4 23. Qe2 h5 24. Bxe4 dxe4 25. Ng5 Nd5 26. Qf2 Qf6 27. h4 Rad8 28. a4 a5 29. Rad1 Nb6 30. Nxe6+ Qxe6 31. c4 Nxc4 32. d5 cxd5 33. Nxc4 dxc4 34. Bd4+ Kf7 35. Kh1 Rd7 36. Rd2 Red8 37. Red1 Qc6 38. Qg3 Bb6 39. Bc3 Rd3 40. Qg5 Rxd2 41. Rxd2 Rxd2 42. Bxd2 Qf6 43. Qxf6+ Kxf6 44. Bc3+ Ke6 45. g3 e3 46. Kg2 Kd5 47. Kf3 Bd4 48. Bxa5 Bxb2 49. Kxe3 Bd4+ 50. Ke2 c3 51. Kd3 Bf2 52. Bd8 Bxg3 53. Bg5 c2 54. Kxc2 Ke4 55. a5 Bxf4 56. Bd8 Bg3 57. Kc3 f4 58. Kd2 f3 59. Be7 Kf4 60. Kd3 Kg4 0-1

[Event "COL-ch sf"]
[Site "Santa Rosa"]
[Date "2011.06.23"]
[Round "4"]
[White "Corpus, Eugenio"]
[Black "Arias, Oscar Eduardo"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "1814"]
[PlyCount "103"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 h5 7. d3 Bxf3 8. Qxf3 Qd7 9. Be3 0-0-0 10. Nd2 f6 11. Nb3 b6 12. a4 a5 13. d4 exd4 14. Nxd4 Bc5 15. Rfd1 Qe8 16. Rd3 Ne7 17. Rad1 Bxd4 18. Bxd4 c5 19. Bc3 Nc6 20. Rxd8+ Nxd8 21. e5 Kb8 22. exf6 Rf8 23. Qd3 gxf6 24. Qd7 Qxd7 25. Rxd7 Ne6 26. g3 h4 27. Kg2 Kc8 28. Rh7 hxg3 29. fxg3 Nd4 30. Bxd4 cxd4 31. Kf3 Kb7 32. Ke4 f5+ 33. Kxd4 Re8 34. Rf7 Rg8 35. Rxf5 Rxg3 36. Rh5 Kc6 37. Rh6+ Kd7 38. c3 Rg5 39. b4 c6 40. Rh7+ Ke6 41. Rh6+ Kd7 42. Kc4 b5+ 43. Kb3 bxa4+ 44. Kxa4 axb4 45. Kxb4 Kc7 46. h4 Rf5 47. h5 Kb6 48. c4 Rf2 49. c5+ Kc7 50. Rh7+ Kc8 51. h6 Rf4+ 52. Ka5 1-0

[Event "COL-ch sf"]
[Site "Santa Rosa"]
[Date "2011.06.22"]
[Round "1"]
[White "Dominguez, Oscar Alberto"]
[Black "Arias, Oscar Eduardo"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2013"]
[PlyCount "17"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 b5 6. Bb3 Be7 7. dxe5 Nxe4 8. Qd5 0-0 9. Qxe4 1-0

