[Event "Pan American-ch U20"]
[Site "Riobamba"]
[Date "2007.08.24"]
[Round "9"]
[White "Villacres, Dennis"]
[Black "Vaca, Alexander"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "1988"]
[BlackElo "2049"]
[PlyCount "99"]
[EventDate "2007.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. 0-0 e5 5. d3 Nf6 6. e4 dxe4 7. dxe4 Qxd1 8. Rxd1 Bg4 9. Rf1 Bxf3 10. Bxf3 Nd4 11. Bd1 Nxe4 12. Re1 Nf6 13. Rxe5+ Be7 14. Na3 Rd8 15. c3 Ne6 16. Ba4+ Nd7 17. Be3 0-0 18. Rd5 Nb6 19. Rxd8 Rxd8 20. Bb3 Bg5 21. f4 Be7 22. Rd1 Rxd1+ 23. Bxd1 f5 24. Bf3 Nd8 25. b3 h6 26. Nc2 Nd7 27. Ne1 Bf6 28. Bd5+ Kf8 29. Nd3 b6 30. c4 Ke7 31. b4 cxb4 32. Nxb4 Kd6 33. Bg2 Ne6 34. Nc6 a5 35. Kf1 Nec5 36. Nd4 g6 37. Bd5 Ne4 38. Bf7 Nf8 39. Nb5+ Ke7 40. Bd5 Nd7 41. g4 Ndc5 42. gxf5 gxf5 43. Nd4 Bxd4 44. Bxd4 Na4 45. Bxe4 fxe4 46. Ke2 Ke6 47. Ke3 Kf5 48. h4 Nc5 49. Bxc5 bxc5 50. a4 1-0

[Event "Pan American-ch U20"]
[Site "Riobamba"]
[Date "2007.08.23"]
[Round "8"]
[White "Vaca, Alexander"]
[Black "Morales, Julio Cesar"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2049"]
[BlackElo "2137"]
[PlyCount "50"]
[EventDate "2007.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. d4 d5 2. e3 c5 3. Bd3 Nc6 4. c3 Nf6 5. Nf3 Bg4 6. Nbd2 e6 7. 0-0 Bd6 8. b3 0-0 9. Qc2 cxd4 10. exd4 Rc8 11. a3 Re8 12. Bb2 e5 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. h3 Bh5 16. Bf5 Bg6 17. Bxg6 hxg6 18. Qd3 Ne4 19. Rac1 Bf4 20. Rcd1 Nxd2 21. Rxd2 Bxd2 22. Qxd2 Rc6 23. Qd4 f6 24. Qxa7 Re2 25. Qxb7 Rb6 0-1

[Event "Pan American-ch U20"]
[Site "Riobamba"]
[Date "2007.08.22"]
[Round "7"]
[White "Cardenas, Juan Carlos"]
[Black "Vaca, Alexander"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1866"]
[BlackElo "2049"]
[PlyCount "98"]
[EventDate "2007.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. d4 Nf6 2. f4 d6 3. Nf3 g6 4. c4 Bg7 5. Nc3 0-0 6. e3 Re8 7. Bd3 Nbd7 8. 0-0 e5 9. e4 exd4 10. Nxd4 Nc5 11. Re1 Ng4 12. Nf3 f5 13. Bc2 c6 14. e5 Qb6 15. Be3 Nxe3 16. Rxe3 Nb3 17. Bxb3 Qxe3+ 18. Kh1 dxe5 19. Ng5 Bf6 20. Nd5 cxd5 21. Qxd5+ Be6 22. Nxe6 exf4 23. Nc7+ Kh8 24. Nxe8 Rxe8 25. Rf1 Qf2 26. Qd1 Qxb2 27. Qd7 Qe2 28. Qd1 Bc3 29. Kg1 Qxd1 30. Rxd1 Re1+ 31. Rxe1 Bxe1 32. Kf1 Bc3 33. Kf2 Be5 34. h3 b6 35. Ba4 Kg7 36. Kf3 Kf6 37. Bd7 g5 38. a3 Bd6 39. a4 a5 40. Be8 h6 41. Bd7 h5 42. Be8 g4+ 43. Kf2 Kg5 44. Bd7 Bc5+ 45. Ke2 f3+ 46. gxf3 gxh3 47. Bc6 f4 48. Kf1 Kh4 49. Bd7 Kg3 0-1

[Event "Pan American-ch U20"]
[Site "Riobamba"]
[Date "2007.08.21"]
[Round "6"]
[White "Leon Calderon, Jonathan Francisco"]
[Black "Vaca, Alexander"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2079"]
[BlackElo "2049"]
[PlyCount "97"]
[EventDate "2007.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 c5 3. e3 Nf6 4. Nf3 e6 5. d4 Nbd7 6. Nbd2 Bd6 7. Bd3 0-0 8. 0-0 b6 9. e4 cxd4 10. exd5 e5 11. Ng5 Nc5 12. Nde4 Ncxe4 13. Nxe4 Nxd5 14. a4 Re8 15. Bb5 Bf5 16. Nxd6 Qxd6 17. Bxe8 Rxe8 18. Re1 Rc8 19. Rc1 Nf4 20. Qd2 h6 21. f3 f6 22. c3 d3 23. c4 Qc5+ 24. Kh1 a5 25. Rcd1 h5 26. Bc3 h4 27. Qe3 Qxe3 28. Rxe3 Nd5 29. Rexd3 Bxd3 30. Rxd3 Nxc3 31. Rxc3 Rd8 32. h3 Rd2 33. c5 bxc5 34. Rxc5 Rb2 35. Rxa5 Rxb3 36. Ra7 Kh7 37. a5 Kh6 38. a6 Ra3 39. Ra8 Kg5 40. a7 g6 41. Kh2 Ra6 42. Kg1 Ra2 43. Kh1 f5 44. Re8 Rxa7 45. Rxe5 Kf4 46. Re6 g5 47. Kh2 Ra2 48. Re8 Ra4 49. Re7 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Riobamba"]
[Date "2007.08.21"]
[Round "5"]
[White "Vaca, Alexander"]
[Black "Quijano Ruiz, Luis"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2049"]
[BlackElo "2219"]
[PlyCount "84"]
[EventDate "2007.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nf6 3. Bd3 e6 4. Nf3 c5 5. 0-0 Nc6 6. c3 Bd6 7. Nbd2 0-0 8. b3 b6 9. Bb2 Bb7 10. a3 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. Nf3 Bc7 14. c4 dxc4 15. Bxc4 Qe7 16. Qc2 Ne4 17. Rad1 Rad8 18. Rxd8 Rxd8 19. Rd1 h6 20. Rxd8+ Qxd8 21. Qd3 Qxd3 22. Bxd3 Bd5 23. Bc4 Bxc4 24. bxc4 f6 25. Kf1 Kf7 26. Ke2 Ke6 27. Ne1 a6 28. a4 Nd6 29. Kd3 b5 30. cxb5 axb5 31. axb5 c4+ 32. Kc2 Nxb5 33. Nf3 Kd5 34. h3 Ba5 35. Nd4 c3 36. Nxb5 cxb2 37. Kxb2 Kc4 38. Nd6+ Kd3 39. Nf5 Ke2 40. Nxg7 Kxf2 41. Nf5 Kxg2 42. Nxh6 Kxh3 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Riobamba"]
[Date "2007.08.20"]
[Round "4"]
[White "Vaca, Alexander"]
[Black "Ortiz, Oscar"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2049"]
[BlackElo "1845"]
[PlyCount "79"]
[EventDate "2007.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. e3 e6 5. Bd3 Bxd3 6. Qxd3 Nc6 7. a3 Be7 8. 0-0 0-0 9. Nbd2 h6 10. Ne5 Nxe5 11. Bxe5 Bd6 12. f4 Nd7 13. Bxd6 cxd6 14. f5 Qe7 15. fxe6 fxe6 16. Rae1 Nb6 17. e4 Rxf1+ 18. Nxf1 dxe4 19. Qxe4 Re8 20. Ne3 d5 21. Qg6 Qf7 22. Qg3 Rf8 23. Ng4 Qf4 24. c3 Qxg3 25. hxg3 Re8 26. Ne5 Nc8 27. Nd3 b6 28. Nf4 Kf7 29. Rf1 Kg8 30. Re1 Kf7 31. Nd3 Nd6 32. Ne5+ Kg8 33. Kf2 Ne4+ 34. Kf3 Rf8+ 35. Kg4 Rf5 36. Nf3 Rf6 37. Kh4 Rg6 38. g4 Nf2 39. Kg3 Ne4+ 40. Kh4 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Riobamba"]
[Date "2007.08.19"]
[Round "3"]
[White "Pulvett Marin, Daniel Eduardo"]
[Black "Vaca, Alexander"]
[Result "1-0"]
[ECO "B16"]
[BlackElo "2049"]
[PlyCount "75"]
[EventDate "2007.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Bc4 Bf5 7. Ne2 e6 8. c3 Bd6 9. Ng3 Bg6 10. Bh6 Nd7 11. Qf3 Qe7 12. 0-0-0 0-0-0 13. h4 Rhg8 14. h5 Bxg3 15. hxg6 Bd6 16. gxh7 Rg6 17. Bf8 Rxf8 18. h8Q Rxh8 19. Rxh8+ Kc7 20. g4 Rg7 21. Rdh1 Nf8 22. R1h6 Ng6 23. R6h7 Rxh7 24. Rxh7 Bf4+ 25. Kb1 Bg5 26. Qe4 Nf4 27. Rh8 Qd7 28. Ra8 Kb6 29. Qc2 Kc7 30. Qa4 Nd5 31. Qxa7 Kd6 32. Qb8+ Qc7 33. Qf8+ Qe7 34. Qb8+ Qc7 35. Bxd5 Qxb8 36. Rxb8 Kc7 37. Rf8 exd5 38. Rxf7+ 1-0

[Event "Pan American-ch U20"]
[Site "Riobamba"]
[Date "2007.08.19"]
[Round "2"]
[White "Vaca, Alexander"]
[Black "Vaca, Diego"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2049"]
[BlackElo "1934"]
[PlyCount "97"]
[EventDate "2007.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. d4 e6 2. e3 d5 3. Bd3 Nf6 4. Nf3 c5 5. c3 Be7 6. Nbd2 Nc6 7. 0-0 Qc7 8. Qe2 b6 9. a3 Bb7 10. b4 cxb4 11. cxb4 a5 12. b5 Na7 13. a4 Bd6 14. Bb2 Qe7 15. Rfc1 0-0 16. Ne5 Rac8 17. Ndf3 Rxc1+ 18. Rxc1 Rc8 19. Rxc8+ Nxc8 20. Ng5 Bxe5 21. dxe5 Ne4 22. Nxe4 dxe4 23. Bc2 Bd5 24. Qd2 Qb7 25. Bxe4 Ne7 26. Bxd5 exd5 27. Bd4 Ng6 28. Qc3 h6 29. f4 Ne7 30. Kf2 Kf8 31. g4 Qc8 32. Qxc8+ Nxc8 33. e4 dxe4 34. Ke3 Ke7 35. Kxe4 g6 36. h4 Ke8 37. f5 Ke7 38. f6+ Kd8 39. h5 g5 40. Bb2 Na7 41. Kd5 Kd7 42. Ba3 Ke8 43. Kd6 Kd8 44. Kd5 Ke8 45. Ke4 Nc8 46. Kf5 Na7 47. Bc1 Kd7 48. Bxg5 hxg5 49. h6 1-0

[Event "Pan American-ch U20"]
[Site "Riobamba"]
[Date "2007.08.18"]
[Round "1"]
[White "Macias Murillo, Bryan"]
[Black "Vaca, Alexander"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2255"]
[BlackElo "2049"]
[PlyCount "77"]
[EventDate "2007.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h6 5. h5 e6 6. g4 Be4 7. f3 Bh7 8. Bd3 Bxd3 9. Qxd3 Nd7 10. Ne2 Qc7 11. Be3 c5 12. c3 Ne7 13. Nd2 Nc6 14. a3 c4 15. Qc2 b5 16. f4 Nb6 17. Ng3 a5 18. 0-0 Qd8 19. Nf3 Qc7 20. f5 0-0-0 21. fxe6 fxe6 22. Nh4 Re8 23. Ng6 Rg8 24. Rf3 Nd7 25. Raf1 Nd8 26. g5 Qb6 27. R1f2 b4 28. axb4 axb4 29. b3 bxc3 30. bxc4 Bb4 31. cxd5 exd5 32. Nf5 hxg5 33. Bxg5 Ne6 34. Rxc3+ Kb8 35. Rb3 Nxg5 36. Qb1 Kc7 37. Rxb4 Qa6 38. Rc2+ Kd8 39. Rb8+ 1-0

[Event "Pan American-ch U16"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "8"]
[White "Bustillos, German"]
[Black "Vaca, Alexander"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1978"]
[BlackElo "2062"]
[PlyCount "76"]
[EventDate "2006.08.??"]
[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 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Ng3 h5 6. h4 Qc7 7. Be2 Bg4 8. Bxg4 Nxg4 9. Nxh5 Qa5+ 10. Bd2 Qxh5 11. Nf3 Nd7 12. Qe2 Qb5 13. Qxb5 cxb5 14. Rf1 e6 15. 0-0-0 Bd6 16. g3 Ndf6 17. Ng5 Nd5 18. Rde1 Rc8 19. Ne4 Be7 20. Kb1 Ngf6 21. Ng5 Rc4 22. Nf3 Nd7 23. Rh1 Bf6 24. c3 Rc8 25. g4 N7b6 26. g5 Be7 27. h5 Nc4 28. Bc1 b4 29. Kc2 Nd6 30. Ne5 bxc3 31. bxc3 Nxc3 32. Kb3 Ncb5 33. Be3 Rc3+ 34. Kb2 Nc4+ 35. Nxc4 Rxc4 36. h6 g6 37. f4 Ba3+ 38. Kb1 Nc3+ 0-1

[Event "Pan American-ch U16"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "1"]
[White "Crespo de Oliveira, Lucas"]
[Black "Vaca, Alexander"]
[Result "1-0"]
[ECO "B10"]
[BlackElo "2062"]
[PlyCount "57"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Qxd5 5. Nc3 Qd8 6. d4 Bd7 7. Nf3 Nf6 8. Bc4 e6 9. 0-0 Be7 10. Re1 0-0 11. Bg5 Qc7 12. Bb3 Re8 13. d5 exd5 14. Rxe7 Rxe7 15. Bxf6 gxf6 16. Nxd5 Qd6 17. Nxe7+ Qxe7 18. Qd4 Nc6 19. Qf4 Ne5 20. Nd4 Ng6 21. Qf3 Re8 22. h3 Qe4 23. Qxf6 Ne5 24. Rd1 Qg6 25. Qxg6+ Nxg6 26. Rc1 Re4 27. Nf3 Bc6 28. Bxf7+ Kxf7 29. Ng5+ 1-0

[Event "Pan American-ch U16"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "9"]
[White "Vaca, Alexander"]
[Black "Lino Lopez, Israel"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2062"]
[PlyCount "48"]
[EventDate "2006.08.??"]
[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. Bg5 d5 3. Bxf6 exf6 4. g3 Bd6 5. Bg2 Bf5 6. Nd2 c6 7. e3 Nd7 8. Ne2 Nb6 9. a3 Qe7 10. 0-0 h5 11. Qc1 h4 12. Re1 Be4 13. Nxe4 dxe4 14. c4 Bc7 15. b4 f5 16. Qc3 hxg3 17. hxg3 Nd7 18. Rad1 Nf6 19. Rb1 Ng4 20. b5 c5 21. Red1 cxd4 22. Nxd4 Qg5 23. Ne2 Rh7 24. Rd5 Rh2 0-1

[Event "Pan American-ch U16"]
[Site "Cuenca"]
[Date "2006.??.??"]
[Round "7"]
[White "Matute, Ruben"]
[Black "Vaca, Alexander"]
[Result "0-1"]
[ECO "B16"]
[BlackElo "2062"]
[PlyCount "54"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. c3 Bf5 7. Bd3 Bxd3 8. Qxd3 e6 9. Be3 Bd6 10. Ne2 Qc7 11. Ng3 Nd7 12. 0-0-0 0-0-0 13. Rhe1 h5 14. Nf1 h4 15. g3 Rdg8 16. Nd2 f5 17. Nc4 Be7 18. Bf4 Bg5 19. Bxg5 Rxg5 20. Ne5 Nxe5 21. Rxe5 Rg4 22. Rde1 Qd8 23. Kb1 hxg3 24. hxg3 Rh2 25. Qf3 Qg8 26. Rxf5 Qg6 27. Ree5 exf5 0-1

[Event "Pan American-ch U16"]
[Site "Cuenca"]
[Date "2006.??.??"]
[Round "4"]
[White "Vaca, Alexander"]
[Black "Arguello, Geovanny"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2062"]
[PlyCount "22"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e4 Be7 4. Bxf6 Bxf6 5. e5 Be7 6. Bd3 c5 7. Qg4 g6 8. Nd2 cxd4 9. Qxd4 Nc6 10. Qc3 Qa5 11. f4 Bc5 1/2-1/2

[Event "Pan American-ch U16"]
[Site "Cuenca"]
[Date "2006.??.??"]
[Round "2"]
[White "Vaca, Alexander"]
[Black "Bravo Navarro, Wilson"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2062"]
[PlyCount "82"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 d5 3. g3 c5 4. c3 Nc6 5. Bg2 Nf6 6. 0-0 Bd7 7. Bg5 h6 8. Bf4 cxd4 9. cxd4 Bb4 10. Qb3 b6 11. a3 Be7 12. Nc3 Na5 13. Qa2 Nc4 14. Ne5 Rc8 15. Rac1 0-0 16. Rfd1 Nh5 17. Kh1 Nxf4 18. gxf4 Bh4 19. Nxc4 Rxc4 20. b3 Rc8 21. e3 f5 22. Rg1 Kh8 23. Bf3 Be8 24. Qb2 Rg8 25. Rg2 g5 26. Rcg1 g4 27. Bd1 h5 28. h3 Rg7 29. f3 Rh7 30. Rh2 gxh3 31. Rxh3 Qe7 32. Bc2 Bf2 33. Rg2 Bxe3 34. Rhg3 Bf7 35. Rh3 Bxf4 36. Re2 Qc7 37. Nb5 Qd7 38. a4 Rg8 39. Qa3 Rhg7 40. Re1 a6 41. Nc3 Bd2 0-1

[Event "Pan American-ch U16"]
[Site "Cuenca"]
[Date "2006.??.??"]
[Round "6"]
[White "Vaca, Alexander"]
[Black "Puga Bravo, Marcelo"]
[Result "1/2-1/2"]
[ECO "A94"]
[WhiteElo "2062"]
[BlackElo "1847"]
[PlyCount "86"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. g3 d5 5. Bg2 c6 6. 0-0 Be7 7. b3 0-0 8. Ba3 Bd7 9. Ne5 Be8 10. Bxe7 Qxe7 11. Nd2 Nbd7 12. Ndf3 Bh5 13. Qc2 Ne4 14. Nxd7 Qxd7 15. Ne5 Qe7 16. f3 Nd6 17. e3 Rf6 18. Rae1 Raf8 19. Qb2 Rh6 20. e4 fxe4 21. fxe4 Rxf1+ 22. Kxf1 Nxe4 23. Bxe4 dxe4 24. Rxe4 Bg6 25. Rf4 Be8 26. Ng4 Rg6 27. Qf2 h5 28. Ne5 Rf6 29. Ke2 Rxf4 30. Qxf4 Qf6 31. Nd3 Bg6 32. Kd2 Bxd3 33. Qxf6 gxf6 34. Kxd3 f5 35. Ke3 Kf7 36. h4 Kf6 37. Kf4 b6 38. b4 c5 39. dxc5 bxc5 40. b5 e5+ 41. Ke3 Ke6 42. a4 Kd6 43. a5 Kc7 1/2-1/2

[Event "Pan American-ch U16"]
[Site "Cuenca"]
[Date "2006.??.??"]
[Round "3"]
[White "Valle, Christian"]
[Black "Vaca, Alexander"]
[Result "0-1"]
[ECO "D12"]
[BlackElo "2062"]
[PlyCount "64"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bf5 4. Bd3 Bxd3 5. Qxd3 c6 6. 0-0 e6 7. c4 Bd6 8. Nc3 Nbd7 9. Re1 0-0 10. e4 dxe4 11. Nxe4 Nxe4 12. Rxe4 Nc5 13. Qe2 Nxe4 14. Qxe4 Be7 15. Bf4 Qb6 16. b3 Bf6 17. g4 Rad8 18. Rd1 c5 19. d5 exd5 20. Rxd5 Rxd5 21. cxd5 Qb4 22. Qf5 c4 23. g5 Be7 24. bxc4 Qxc4 25. d6 Bd8 26. Ne5 g6 27. Qg4 Qe6 28. Qxe6 fxe6 29. Be3 Rf5 30. Nc4 b5 31. Nb2 Rd5 32. Bxa7 Rd2 0-1

[Event "Pan American-ch U16"]
[Site "Cuenca"]
[Date "2006.??.??"]
[Round "5"]
[White "Zapata, Alexander"]
[Black "Vaca, Alexander"]
[Result "1/2-1/2"]
[ECO "B15"]
[BlackElo "2062"]
[PlyCount "38"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Ng3 h5 6. h4 Qc7 7. Bg5 Bg4 8. Qd2 Nbd7 9. Bc4 Nb6 10. Bb3 e6 11. Bf4 Bd6 12. Bxd6 Qxd6 13. N3e2 Bxe2 14. Nxe2 0-0-0 15. 0-0-0 Kb8 16. f3 Qe7 17. Rhe1 Rd7 18. Qa5 a6 19. Nf4 Rhd8 1/2-1/2

[Event "Pan American-ch U14"]
[Site "Bogota"]
[Date "2003.06.08"]
[Round "1"]
[White "Vaca, Alexander"]
[Black "Cornejo, Max"]
[Result "0-1"]
[ECO "A21"]
[PlyCount "92"]
[EventDate "2003.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 d6 5. d3 g6 6. Bg5 h6 7. Bxf6 Qxf6 8. Nd5 Qd8 9. Nf3 c6 10. Nc3 Bg7 11. Qc2 0-0 12. 0-0 g5 13. Rad1 Kh8 14. Rfe1 Be6 15. e3 Nd7 16. Nd2 Bg8 17. Kh1 Bh7 18. Nb3 f4 19. exf4 gxf4 20. Qd2 fxg3 21. fxg3 Nf6 22. d4 Ng4 23. Rf1 exd4 24. Nxd4 Qb6 25. h3 Rxf1+ 26. Bxf1 Qxd4 27. Qxd4 Bxd4 28. Rxd4 Ne3 29. Be2 Nf5 30. Rg4 Re8 31. Kh2 d5 32. cxd5 cxd5 33. Bb5 Rd8 34. Ne2 d4 35. Nc1 d3 36. Nxd3 Ne3 37. Ne5 Rd2+ 38. Kg1 Nxg4 39. Nxg4 Rxb2 40. Bc4 Kg7 41. Kf1 Bf5 42. Nf2 Bb1 43. Nd1 Rh2 44. Nc3 Rc2 45. Nxb1 Rxc4 46. a3 Rc1+ 0-1

[Event "Pan American-ch U14"]
[Site "Bogota"]
[Date "2003.06.??"]
[Round "4"]
[White "Dominguez Rincon, Miller Duvan"]
[Black "Vaca, Alexander"]
[Result "1-0"]
[ECO "B18"]
[PlyCount "21"]
[EventDate "2003.06.08"]
[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. Nc3 dxe4 4. Nxe4 Bf5 5. Bd3 Qxd4 6. Nf3 Qd7 7. Nc5 Qc8 8. Bxf5 Qxf5 9. Nxb7 Nd7 10. Qe2 Nb6 11. Nd6+ 1-0

[Event "Pan American-ch U14"]
[Site "Bogota"]
[Date "2003.06.??"]
[Round "3"]
[White "Vaca, Alexander"]
[Black "Carreno Acevedo, Jhonatan Robert"]
[Result "1-0"]
[ECO "D35"]
[PlyCount "95"]
[EventDate "2003.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nf3 Be7 5. Nc3 Nf6 6. Bf4 c6 7. e3 Bf5 8. Bd3 Bxd3 9. Qxd3 Nbd7 10. 0-0 0-0 11. Rfc1 Re8 12. Rab1 Nf8 13. b4 a6 14. Na4 Ne6 15. Bg3 Ne4 16. Nc5 Bxc5 17. bxc5 Nxg3 18. hxg3 Qc7 19. Rb6 Rab8 20. Rcb1 Nf8 21. Qb3 Re7 22. Rxa6 bxa6 23. Qxb8 Qa5 24. Rb2 f6 25. Qb6 Qa4 26. Qb4 Qb5 27. Nh4 Rb7 28. a3 g6 29. Nf3 a5 30. Qxb5 Rxb5 31. Rxb5 cxb5 32. Kf1 Kf7 33. Ke2 Ke6 34. Kd3 Nd7 35. Nd2 Nb8 36. e4 h6 37. Nb1 Nc6 38. exd5+ Kxd5 39. Nc3+ Ke6 40. Nxb5 Ne7 41. Kc4 Nf5 42. d5+ Ke7 43. c6 Nd6+ 44. Nxd6 Kxd6 45. Kb5 Kc7 46. Kc5 f5 47. d6+ Kd8 48. Kb6 1-0

[Event "Pan American-ch U14"]
[Site "Bogota"]
[Date "2003.06.??"]
[Round "7"]
[White "Vaca, Alexander"]
[Black "Polit, Andres"]
[Result "0-1"]
[ECO "A45"]
[PlyCount "46"]
[EventDate "2003.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. e3 cxd4 5. exd4 Nc6 6. c3 d6 7. f4 e5 8. fxe5 fxe5 9. Nf3 e4 10. Nfd2 d5 11. Be2 Qg5 12. g3 Bd6 13. Nf1 h5 14. Nbd2 h4 15. g4 h3 16. Qc2 Qh4+ 17. Kd1 Bxg4 18. Rg1 Rg8 19. Ne3 Bxe2+ 20. Kxe2 0-0-0 21. Rxg8 Rxg8 22. Rf1 Bxh2 23. Rxf7 Qh5+ 0-1

[Event "Pan American-ch U10"]
[Site "Bento Goncalves"]
[Date "2000.??.??"]
[Round "7"]
[White "Contreras, Nelson"]
[Black "Vaca, Alexander"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "49"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e3 d5 2. Be2 e5 3. b3 Nc6 4. Bb2 Bd6 5. Nf3 a6 6. d3 Bf5 7. Nbd2 Nf6 8. c4 dxc4 9. bxc4 0-0 10. h3 Re8 11. e4 Bg6 12. 0-0 Bc5 13. Nh4 Nxe4 14. Nxg6 Nxd2 15. Qxd2 hxg6 16. Rae1 e4 17. Qc3 Bd4 18. Qd2 Bxb2 19. Qxb2 exd3 20. Bf3 Rxe1 21. Rxe1 Rb8 22. Bd5 Kh8 23. Qc3 Qf6 24. Qxd3 Nb4 25. Qe3 0-1

[Event "Pan American-ch U10"]
[Site "Bento Goncalves"]
[Date "2000.??.??"]
[Round "1"]
[White "Ikeda, Victor Jr"]
[Black "Vaca, Alexander"]
[Result "1-0"]
[ECO "B12"]
[PlyCount "61"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Bxd3 5. Qxd3 Qa5+ 6. Nc3 Qa6 7. Qf5 e6 8. Qg5 Ne7 9. Nf3 Nf5 10. Nh4 Nxh4 11. Qxh4 Nd7 12. Qg3 Qb6 13. Qd3 c5 14. Be3 Rb8 15. Rb1 cxd4 16. Bxd4 Bc5 17. Nb5 Bxd4 18. Nxd4 Nxe5 19. Qe3 0-0 20. Qxe5 Qa5+ 21. c3 Qxa2 22. 0-0 Rbc8 23. b3 Qa5 24. Rbc1 Ra8 25. Ne2 Qb5 26. c4 Qd7 27. Rfd1 Rfd8 28. Nf4 d4 29. Nh5 f6 30. Qg3 e5 31. Nxf6+ 1-0

[Event "Pan American-ch U10"]
[Site "Bento Goncalves"]
[Date "2000.??.??"]
[Round "2"]
[White "Invernizzi Cardozo, Giovanni"]
[Black "Vaca, Alexander"]
[Result "1/2-1/2"]
[ECO "B18"]
[PlyCount "41"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Bd3 Bxd3 8. Qxd3 Ngf6 9. 0-0 g6 10. Bf4 Bg7 11. Qe3 Nd5 12. Qd2 Nxf4 13. Qxf4 0-0 14. Rfe1 Re8 15. Rad1 Rc8 16. c3 Qc7 17. Qxc7 Rxc7 18. Re2 Nb6 19. Rde1 Nd5 20. Rd2 Bh6 21. Rc2 1/2-1/2

[Event "Pan American-ch U10"]
[Site "Bento Goncalves"]
[Date "2000.??.??"]
[Round "5"]
[White "Lermito, Sabastian"]
[Black "Vaca, Alexander"]
[Result "0-1"]
[ECO "D04"]
[PlyCount "139"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Bf5 3. e3 Nf6 4. Nbd2 Nbd7 5. Be2 e6 6. c3 c6 7. h3 Qc7 8. c4 dxc4 9. Bxc4 Bb4 10. a3 Bxd2+ 11. Bxd2 c5 12. Rc1 Qb6 13. Qb3 Qxb3 14. Bxb3 cxd4 15. exd4 Be4 16. Bd1 Bd5 17. 0-0 0-0 18. Ne1 Ne4 19. Bb4 Rfc8 20. Rxc8+ Rxc8 21. Nf3 Nb6 22. Re1 Nc4 23. b3 Nb6 24. Nd2 Nxd2 25. Bxd2 Nd7 26. b4 Nb6 27. Be2 Bc4 28. Bxc4 Rxc4 29. Rc1 Rxd4 30. Be3 Rd8 31. Bxb6 axb6 32. Rc7 Rb8 33. Kf1 g6 34. Ke2 Kg7 35. Ke3 Kf6 36. g4 Ra8 37. Rc3 g5 38. Ke4 h6 39. Rf3+ Ke7 40. Ke5 Rd8 41. Rc3 Rd5+ 42. Ke4 Kd7 43. Rf3 Ke7 44. Rc3 Rd7 45. Rf3 Rc7 46. Kd4 b5 47. Ke5 Rc2 48. Ke4 f6 49. Kd3 Rc4 50. Re3 Kd6 51. Re1 Kd5 52. Rb1 e5 53. f3 e4+ 54. fxe4+ Rxe4 55. Rf1 Rf4 56. Rc1 Rf3+ 57. Ke2 Rxa3 58. Rc5+ Ke6 59. Rxb5 Rxh3 60. Rxb7 Rg3 61. Rb6+ Kf7 62. b5 Rxg4 63. Kd3 Rf4 64. Rc6 Rb4 65. b6 Kg6 66. Kc3 Rb5 67. Kc4 Rb1 68. Kd5 g4 69. Kd6 g3 70. Rc2 0-1

[Event "Pan American-ch U10"]
[Site "Bento Goncalves"]
[Date "2000.??.??"]
[Round "3"]
[White "Vaca, Alexander"]
[Black "Grau, Carlos"]
[Result "1/2-1/2"]
[ECO "A16"]
[PlyCount "48"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. h3 Bg7 5. d3 Nbd7 6. Be3 0-0 7. Nge2 c5 8. g3 e6 9. Bg2 a6 10. a4 Qc7 11. 0-0 Rb8 12. f4 b6 13. Qd2 Bb7 14. Rf2 h5 15. f5 exf5 16. exf5 Bxg2 17. Kxg2 Qb7+ 18. Kh2 Ne5 19. Ng1 Kh7 20. Raf1 Nfd7 21. Bg5 Rbe8 22. fxg6+ fxg6 23. Rxf8 Rxf8 24. Rxf8 Nxf8 1/2-1/2

[Event "Pan American-ch U10"]
[Site "Bento Goncalves"]
[Date "2000.??.??"]
[Round "4"]
[White "Vaca, Alexander"]
[Black "Hasegawa, Fernando Henrique"]
[Result "0-1"]
[ECO "C20"]
[PlyCount "66"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e5 2. e4 Nc6 3. Nc3 f5 4. d3 Nf6 5. g3 Bb4 6. Nge2 fxe4 7. a3 Bxc3+ 8. Nxc3 exd3 9. Qxd3 d6 10. Bg2 0-0 11. Bg5 h6 12. Bh4 Be6 13. b3 Qd7 14. Bxf6 Rxf6 15. Bd5 Bxd5 16. Nxd5 Rf5 17. c5 Raf8 18. 0-0 Qf7 19. Ra2 Qh5 20. f4 exf4 21. Nxf4 Qf7 22. Raf2 g5 23. Nh3 Rxf2 24. Rxf2 Qe7 25. Qg6+ Qg7 26. Qe6+ Kh8 27. cxd6 cxd6 28. Qxd6 Rxf2 29. Kxf2 Qb2+ 30. Kf3 Qxb3+ 31. Kg4 Kg7 32. Kh5 Qf3+ 33. g4 Qxh3# 0-1

[Event "Pan American-ch U10"]
[Site "Bento Goncalves"]
[Date "2000.??.??"]
[Round "6"]
[White "Vaca, Alexander"]
[Black "Ibanez Iglesias, Rodrigo"]
[Result "1-0"]
[ECO "B20"]
[PlyCount "73"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. c4 c5 3. Nc3 Nc6 4. d3 d6 5. Be3 Be6 6. Nge2 Qc7 7. g3 g6 8. Bg2 Nge7 9. Qd2 Bg7 10. 0-0 0-0 11. Bh6 f5 12. Bxg7 Kxg7 13. Bh3 Nd4 14. Nxd4 cxd4 15. Ne2 Qd7 16. Bg2 fxe4 17. Bxe4 d5 18. cxd5 Nxd5 19. Qg5 Nf6 20. Qxe5 Rae8 21. Qxd4 Qxd4 22. Nxd4 Nxe4 23. dxe4 Bc4 24. Rfc1 Bd3 25. f3 Rf7 26. b4 b5 27. Kg2 Bc4 28. a4 Rd8 29. Rxc4 bxc4 30. Ne6+ Kf6 31. Nxd8 Rd7 32. Nc6 c3 33. Rc1 Rd2+ 34. Kh3 c2 35. b5 Rd7 36. Rxc2 Rc7 37. f4 1-0

