[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.07"]
[Round "9"]
[White "Arias, Juan Esteban"]
[Black "Otalora, Sebastian"]
[Result "1-0"]
[ECO "C68"]
[PlyCount "37"]
[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 a6 4. Bxc6 dxc6 5. Nc3 Bd6 6. d3 h6 7. 0-0 Nf6 8. Re1 0-0 9. d4 Bg4 10. dxe5 Bxf3 11. Qxf3 Bxe5 12. Rb1 Qe7 13. Bf4 Rfe8 14. Bxe5 Qxe5 15. Qf5 Qd4 16. Rbd1 Qc4 17. Rd3 b5 18. a3 g6 19. Qxf6 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.06"]
[Round "8"]
[White "Arias, Juan Esteban"]
[Black "Pensamiento Calderon, Fernando"]
[Result "0-1"]
[ECO "C41"]
[PlyCount "33"]
[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. d4 Nd7 5. Nc3 Ngf6 6. Bg5 0-0 7. dxe5 dxe5 8. Qe2 c6 9. 0-0-0 b5 10. Bb3 a5 11. a3 Ba6 12. Qd2 Qc7 13. g4 b4 14. axb4 axb4 15. Ne2 Nxe4 16. Qxd7 Bxg5+ 17. Nxg5 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "7"]
[White "Perez Viana, Yhoiner"]
[Black "Arias, Juan Esteban"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "50"]
[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. Nc3 e5 2. e3 Nf6 3. Nf3 e4 4. Ng5 d5 5. f3 Bf5 6. Be2 Bb4 7. a3 Bxc3 8. bxc3 0-0 9. d3 Re8 10. f4 Qd7 11. a4 Nc6 12. 0-0 h6 13. Nh3 Bxh3 14. gxh3 Qxh3 15. Rf2 Ne7 16. Qf1 Qxf1+ 17. Bxf1 Nf5 18. d4 Nh4 19. Bg2 Ng4 20. Rf1 Re6 21. f5 Rc6 22. Ra3 g6 23. fxg6 Rxg6 24. h3 Nxe3 25. Bxe3 Nxg2 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "6"]
[White "Valencia Gantiva, Cristian"]
[Black "Arias, Juan Esteban"]
[Result "1-0"]
[ECO "C62"]
[PlyCount "49"]
[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. d4 exd4 4. Nxd4 d6 5. Bb5 Bd7 6. Nxc6 bxc6 7. Bd3 d5 8. 0-0 Nf6 9. Nc3 Bb4 10. exd5 cxd5 11. Qf3 c6 12. Qg3 Ba5 13. Re1+ Be6 14. f4 0-0 15. f5 Bd7 16. Bh6 Bb6+ 17. Kh1 Nh5 18. Qg4 g6 19. Bxf8 Qxf8 20. Qe2 Nf4 21. Qe7 Qxe7 22. Rxe7 Bc8 23. f6 h5 24. Re8+ Kh7 25. Rf8 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.04"]
[Round "4"]
[White "Arias, Juan Esteban"]
[Black "Gorbena Pena, Luis Andres"]
[Result "0-1"]
[ECO "B51"]
[PlyCount "90"]
[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 c5 2. Nf3 Nc6 3. Bb5 d6 4. Bxc6+ bxc6 5. Nc3 Nf6 6. d3 g6 7. Bg5 Bg7 8. Qe2 Nd7 9. Qd2 0-0 10. Bh6 Nb6 11. Bxg7 Kxg7 12. e5 Bg4 13. exd6 exd6 14. Qg5 Re8+ 15. Kd2 Bxf3 16. Qxd8 Raxd8 17. gxf3 c4 18. d4 Nd7 19. f4 d5 20. Rhe1 Nf6 21. f3 Nh5 22. Rxe8 Rxe8 23. Ne2 Re6 24. Rg1 f5 25. c3 Re7 26. h4 Rb7 27. Kc2 Rc7 28. Rb1 c5 29. b3 cxb3+ 30. axb3 cxd4 31. Nxd4 Nxf4 32. Kd2 Kf6 33. Rc1 h6 34. b4 Ne6 35. Ne2 g5 36. hxg5+ hxg5 37. Ke3 f4+ 38. Kf2 Rc4 39. Ra1 Ke5 40. Ra4 Rc7 41. Ke1 d4 42. cxd4+ Nxd4 43. Nxd4 Kxd4 44. Ra5 Ke3 45. Rxa7 Rc1# 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.04"]
[Round "5"]
[White "Arias, Juan Esteban"]
[Black "Hernandez, Oscar Eduardo"]
[Result "0-1"]
[ECO "C68"]
[PlyCount "78"]
[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 a6 4. Bxc6 dxc6 5. Nc3 Bd6 6. d4 Bg4 7. dxe5 Bxf3 8. Qxf3 Bxe5 9. Bd2 Nf6 10. 0-0-0 0-0 11. Qf5 Qe7 12. Rhe1 Rfe8 13. Re3 Qe6 14. Qxe6 Rxe6 15. f3 Bxh2 16. Rd3 Rd6 17. f4 Rad8 18. Rf3 R6d7 19. Be3 Rxd1+ 20. Nxd1 Nxe4 21. Nc3 Nxc3 22. bxc3 g5 23. g4 gxf4 24. Bxf4 Bxf4+ 25. Rxf4 Rd5 26. Kb2 h5 27. gxh5 Rxh5 28. Kb3 Rb5+ 29. Ka3 Kg7 30. c4 Rc5 31. Kb4 b6 32. Rd4 f5 33. Rd7+ Kf6 34. Rxc7 f4 35. Rh7 Kg5 36. Rg7+ Kh4 37. Rh7+ Rh5 38. Rf7 Kg3 39. Rg7+ Kf2 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.03"]
[Round "3"]
[White "Lagos Oviedo, Juan Jose"]
[Black "Arias, Juan Esteban"]
[Result "0-1"]
[ECO "C64"]
[PlyCount "90"]
[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. Bxc6 dxc6 5. 0-0 Bg4 6. h3 Bh5 7. d3 Qf6 8. Nbd2 0-0-0 9. b3 Bd4 10. Rb1 Bc3 11. a4 Bxd2 12. Bxd2 Bxf3 13. Qxf3 Qxf3 14. gxf3 Rd6 15. Bc3 Rg6+ 16. Kh1 f6 17. Rg1 Ne7 18. Bb4 Rxg1+ 19. Rxg1 Ng6 20. Bc5 b6 21. Be3 Rf8 22. b4 f5 23. a5 Kb7 24. Bd2 fxe4 25. axb6 exd3 26. bxa7 dxc2 27. Rc1 Kxa7 28. Rxc2 Rxf3 29. Kg2 Rf6 30. Bg5 Rd6 31. Be3+ Ka6 32. Bc5 Re6 33. Rd2 Nf4+ 34. Kf3 Nxh3 35. Ke4 g6 36. Rd7 Kb7 37. Ke3 h5 38. Re7 Rxe7 39. Bxe7 g5 40. Kf3 g4+ 41. Kg3 Nf4 42. f3 gxf3 43. Kxf3 Kb6 44. Ke4 Nd5 45. Kxe5 Nxe7 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "1"]
[White "Arias, Juan Esteban"]
[Black "Principe, Gerson"]
[Result "0-1"]
[ECO "B12"]
[PlyCount "104"]
[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. Nf3 e6 5. Nc3 Nd7 6. Bd3 Bxd3 7. Qxd3 Bb4 8. 0-0 Bxc3 9. Qxc3 Rc8 10. Be3 Ne7 11. Qb4 Qb6 12. Qxb6 Nxb6 13. b3 0-0 14. Rac1 Nf5 15. Rfe1 Rfd8 16. Bg5 Rd7 17. c3 Rdc7 18. Red1 h6 19. Bh4 c5 20. dxc5 Rxc5 21. Rd3 Nd7 22. c4 Nxh4 23. Nxh4 Nxe5 24. Rdc3 g5 25. Nf3 Nxf3+ 26. gxf3 dxc4 27. bxc4 b5 28. Kf1 f5 29. Ke2 Rxc4 30. Rxc4 bxc4 31. Kd2 e5 32. Rc2 Kf7 33. Kc3 Ke6 34. Kb4 e4 35. fxe4 fxe4 36. Rc3 g4 37. h3 h5 38. hxg4 hxg4 39. Re3 Kf5 40. Kc3 Kf4 41. Kd4 Rd8+ 42. Kxc4 Rd2 43. a4 Rxf2 44. Rb3 g3 45. Rb7 g2 46. Rf7+ Ke3 47. Rg7 Ke2 48. Kd4 e3 49. a5 Rf4+ 50. Ke5 Kf3 51. Rxg2 Kxg2 52. Kxf4 e2 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "2"]
[White "Morimoto, Rafael Shigueo"]
[Black "Arias, Juan Esteban"]
[Result "1-0"]
[ECO "C64"]
[PlyCount "89"]
[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 a6 6. Ba4 b5 7. Bb3 exd4 8. cxd4 Bb4+ 9. Nc3 Bxc3+ 10. bxc3 Bg4 11. h3 Bh5 12. 0-0 Qf6 13. Kh1 Bxf3 14. Qxf3 Qxf3 15. gxf3 Nf6 16. Rg1 0-0 17. Bh6 Nh5 18. Bd1 Kh8 19. Be3 Ne7 20. f4 Nf6 21. Bf3 d5 22. e5 Ne4 23. Bxe4 dxe4 24. Rg3 g6 25. Rag1 Nf5 26. Rg4 Nxe3 27. fxe3 Rac8 28. d5 c6 29. d6 Rcd8 30. Rc1 f6 31. c4 b4 32. c5 f5 33. Rg2 h6 34. Rb1 a5 35. Rb3 Rg8 36. h4 Rg7 37. a3 Rb8 38. axb4 Rxb4 39. Rxb4 axb4 40. Rb2 Rb7 41. Kg2 Rb5 42. d7 Rb8 43. e6 Kg7 44. e7 Kf7 45. d8Q 1-0

