[Event "Santiago CALF op"]
[Site "Santiago de Chile"]
[Date "2003.05.03"]
[Round "7.6"]
[White "Gonzalez, Humberto"]
[Black "Herrera, David"]
[Result "1-0"]
[ECO "D46"]
[WhiteElo "1885"]
[BlackElo "1871"]
[PlyCount "71"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHI"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. e3 Be7 6. Bd3 c6 7. 0-0 0-0 8. Bd2 a6 9. cxd5 cxd5 10. Rc1 b5 11. a3 Bb7 12. h3 b4 13. axb4 Bxb4 14. Na4 a5 15. Bxb4 axb4 16. Nc5 Nxc5 17. Rxc5 Ne4 18. Rc1 f6 19. Nd2 f5 20. Nb3 Ba6 21. Nc5 Nxc5 22. Rxc5 Bxd3 23. Qxd3 Qd6 24. Rfc1 Rfe8 25. Rc6 Qb8 26. g3 Qb7 27. Rc7 Qb6 28. R1c5 Rab8 29. R7c6 Qb7 30. Qa6 Qf7 31. Rc7 Qg6 32. Rb5 Ra8 33. Qd6 f4 34. Qxf4 Qb1+ 35. Kg2 Ra1 36. Qf7+ 1-0

[Event "Santiago CALF op"]
[Site "Santiago de Chile"]
[Date "2003.04.26"]
[Round "6.9"]
[White "Herrera, David"]
[Black "San Martin Alvarez, Albert"]
[Result "1-0"]
[ECO "D78"]
[WhiteElo "1871"]
[BlackElo "1969"]
[PlyCount "81"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHI"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. g3 0-0 6. Bg2 c6 7. 0-0 dxc4 8. e4 Nfd7 9. Qe2 Nb6 10. Be3 N8d7 11. Rad1 Qc7 12. Bf4 e5 13. dxe5 Nxe5 14. Nd4 Qe7 15. Nf3 Nxf3+ 16. Qxf3 h5 17. Bd6 Qg5 18. Bxf8 Bg4 19. Qf4 Qxf4 20. gxf4 Bxd1 21. Bxg7 Bg4 22. Bd4 Nd7 23. f3 Be6 24. Rd1 c5 25. Bf2 a6 26. Nd5 b5 27. Nc7 Ra7 28. Nxe6 fxe6 29. Bh3 Kf7 30. Rd6 Nf8 31. Bxc5 Rc7 32. Bb4 Ra7 33. f5 exf5 34. exf5 gxf5 35. Bxf5 a5 36. Bc3 b4 37. Bd4 Re7 38. Rf6+ Kg8 39. Kf2 Nh7 40. Rg6+ Kf8 41. Bc5 1-0

[Event "Santiago CALF op"]
[Site "Santiago de Chile"]
[Date "2003.??.??"]
[Round "5.13"]
[White "Atenas, Hugo"]
[Black "Herrera, David"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "1763"]
[BlackElo "1871"]
[PlyCount "48"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHI"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Nxc6 bxc6 7. h3 e6 8. Bd3 Be7 9. 0-0 a5 10. Bg5 e5 11. Qd2 Be6 12. b3 0-0 13. Rad1 Qc7 14. Ne2 Rad8 15. f4 d5 16. Qe3 c5 17. Qg3 c4 18. exd5 cxd3 19. dxe6 dxe2 20. exf7+ Kxf7 21. Rxd8 exf1Q+ 22. Kxf1 Qxd8 23. fxe5 Qd1+ 24. Kf2 Ne4+ 0-1

[Event "Santiago CALF op"]
[Site "Santiago de Chile"]
[Date "2003.??.??"]
[Round "3.2"]
[White "Espinoza, Horacio"]
[Black "Herrera, David"]
[Result "1-0"]
[ECO "D63"]
[WhiteElo "2041"]
[BlackElo "1871"]
[PlyCount "119"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHI"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. Nc3 e6 4. Bg5 Be7 5. Nf3 Nbd7 6. e3 a6 7. Bd3 dxc4 8. Bxc4 b5 9. Bd3 0-0 10. 0-0 Bb7 11. Rc1 Rc8 12. a3 c5 13. Bb1 c4 14. e4 h6 15. Bh4 Nh7 16. Bxe7 Qxe7 17. e5 f5 18. Re1 Ng5 19. Nd2 Nh3+ 20. Kf1 Qg5 21. Nf3 Bxf3 22. Qxf3 Nf4 23. d5 Ng6 24. dxe6 Ndxe5 25. Qe3 Qe7 26. h3 f4 27. Qe4 Qxe6 28. Rcd1 f3 29. g4 Rf4 30. Qd5 Rf6 31. Qxe6+ Rxe6 32. Bf5 Rce8 33. Bxe6+ Rxe6 34. Rd5 Kf7 35. Re3 Ke7 36. Kg1 Nd3 37. Rxe6+ Kxe6 38. Rf5 Ngf4 39. Ne4 Nxh3+ 40. Kf1 Nhf4 41. Nc3 h5 42. Rg5 g6 43. gxh5 gxh5 44. Nd1 Kf6 45. Rg3 Ne5 46. Ne3 h4 47. Rg8 Ned3 48. Nd1 h3 49. Kg1 Kf5 50. Ra8 Kg4 51. Rxa6 Ne2+ 52. Kh2 Nd4 53. Rd6 Nb3 54. Rd5 Nd2 55. Rd4+ Kf5 56. Kxh3 Ke5 57. Rd8 Nf1 58. Kg4 Nh2+ 59. Kg3 Nf1+ 60. Kxf3 1-0

[Event "Santiago CALF op"]
[Site "Santiago de Chile"]
[Date "2003.??.??"]
[Round "4.4"]
[White "Herrera, David"]
[Black "Morales Gonzalez, Rodrigo"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "1871"]
[BlackElo "2086"]
[PlyCount "54"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHI"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bg5 c5 5. d5 Qa5 6. Bxf6 Bxf6 7. Rc1 Bxc3+ 8. Rxc3 Qxa2 9. Rc2 Na6 10. b4 Qa4 11. bxc5 Qb4+ 12. Rd2 Nxc5 13. f3 Nb3 14. e4 Qxd2+ 15. Qxd2 Nxd2 16. Kxd2 a5 17. Ne2 d6 18. Nc3 Bd7 19. Nb5 Bxb5 20. cxb5 b6 21. Bd3 Kd7 22. Re1 Rhc8 23. e5 dxe5 24. Rxe5 Kd6 25. Re3 Rc5 26. Ke2 a4 27. f4 a3 0-1

[Event "Santiago CALF op"]
[Site "Santiago de Chile"]
[Date "2003.??.??"]
[Round "2.3"]
[White "Herrera, David"]
[Black "Quinteros, Abel"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "1871"]
[BlackElo "2035"]
[PlyCount "57"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHI"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Nf3 e6 5. Bg5 Be7 6. e3 d5 7. b3 Nbd7 8. Bd3 Ne4 9. Bxe7 Qxe7 10. Qc2 Ndf6 11. 0-0 g5 12. Ne5 h5 13. a4 g4 14. a5 h4 15. a6 Bc8 16. Nxe4 Nxe4 17. cxd5 Nd6 18. Qc6+ Kf8 19. Qxa8 g3 20. fxg3 hxg3 21. Ng6+ Ke8 22. Nxe7 Kxe7 23. hxg3 Rg8 24. Rf3 f5 25. dxe6 Bxe6 26. Qc6 Kd8 27. Rc1 Rg7 28. Bxf5 Bxf5 29. Rxf5 1-0

