[Event "Hoogeveen Amateurs op 25th"]
[Site "Hoogeveen"]
[Date "2022.10.22"]
[Round "7.2"]
[White "Poelstra, Ben"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1888"]
[BlackElo "1942"]
[PlyCount "43"]
[EventDate "2022.10.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Bf5 6. Be3 Nf6 7. Nbd2 cxd4 8. Bc4 Qd6 9. Nxd4 Nxd4 10. Bxd4 Be6 11. Qa4+ Nd7 12. Ne4 Qc6 13. Qxc6 bxc6 14. Bxe6 fxe6 15. Ng5 e5 16. Be3 h6 17. Nf3 e6 18. 0-0-0 Be7 19. Nd2 0-0 20. Nc4 Rfd8 21. Na5 Rac8 22. Nb7 1-0

[Event "Hoogeveen Amateurs op 25th"]
[Site "Hoogeveen"]
[Date "2022.10.21"]
[Round "6.2"]
[White "Grotenhuis, Gerard"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2012"]
[BlackElo "1942"]
[PlyCount "130"]
[EventDate "2022.10.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Nge7 5. Nf3 e4 6. Ne5 Bd7 7. Nxd7 Qxd7 8. d4 0-0-0 9. Nd2 f5 10. c4 a6 11. Ba4 Qe6 12. a3 f4 13. Qe2 fxe3 14. fxe3 g6 15. 0-0-0 h5 16. Kb1 Bh6 17. Rc1 Qg4 18. Qxg4+ hxg4 19. Rhe1 Na7 20. b4 Nf5 21. Rc3 b5 22. cxb5 Nxb5 23. Bxb5 axb5 24. Nb3 Bf8 25. Nc5 Bxc5 26. Rxc5 Rxh2 27. Re2 g3 28. Bc3 Rd6 29. Rxb5 c6 30. Rc5 Rh1+ 31. Kc2 Rf1 32. Be1 Kb7 33. a4 Rf6 34. b5 Rf2 35. Bxf2 gxf2 36. Rxf2 Nxe3+ 37. Kd2 Rxf2+ 38. Kxe3 Rxg2 39. bxc6+ Kc7 40. a5 Rg3+ 41. Kf4 Rf3+ 42. Ke5 e3 43. Rc1 e2 44. Re1 Kxc6 45. Rxe2 Kb5 46. Kxd5 Kxa5 47. Rb2 g5 48. Kc5 Rc3+ 49. Kd6 g4 50. d5 g3 51. Ke5 Re3+ 52. Kd4 Re1 53. Kc5 Ka6 54. Kd6 Rf1 55. Rg2 Rf3 56. Kc6 Rc3+ 57. Kd7 Kb6 58. d6 Rf3 59. Rg1 Rb3 60. Rd1 g2 61. Kc8 Rc3+ 62. Kb8 Rg3 63. Rb1+ Kc6 64. d7 Kxd7 65. Rg1 Ke6 0-1

[Event "Hoogeveen Amateurs op 25th"]
[Site "Hoogeveen"]
[Date "2022.10.20"]
[Round "5.5"]
[White "Van der Werff, Frank"]
[Black "Widebeck, Klas"]
[Result "1-0"]
[ECO "E09"]
[WhiteElo "1942"]
[BlackElo "1664"]
[PlyCount "113"]
[EventDate "2022.10.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nbd2 Nf6 5. g3 Nbd7 6. Bg2 Be7 7. 0-0 0-0 8. Qc2 b6 9. e4 dxe4 10. Nxe4 Bb7 11. Rd1 Rc8 12. Ne5 h6 13. b3 Nxe4 14. Bxe4 Nxe5 15. dxe5 Qc7 16. Bb2 Rfd8 17. h4 c5 18. Re1 Rd7 19. Rad1 Bxe4 20. Qxe4 Rcd8 21. Rxd7 Qxd7 22. Kf1 b5 23. cxb5 Qxb5+ 24. Qc4 Qxc4+ 25. bxc4 Rd2 26. Re2 Rd3 27. Rc2 Bd8 28. Ke2 Rd7 29. Bc3 g6 30. Rb2 f6 31. exf6 Kf7 32. Rb5 Bxf6 33. Bxf6 Kxf6 34. Rxc5 h5 35. a4 Rd6 36. a5 e5 37. Ke3 Ke6 38. Ke4 Rd4+ 39. Ke3 Rd6 40. f4 exf4+ 41. Kxf4 Rd4+ 42. Ke3 Rg4 43. Rg5 Rxc4 44. Rxg6+ Kf7 45. Rg5 Rc3+ 46. Kf2 Rc2+ 47. Kf3 Rc3+ 48. Kg2 Rc2+ 49. Kh3 Ra2 50. Rxh5 Kg6 51. Rc5 Ra1 52. h5+ Kh6 53. Kh4 Rh1+ 54. Kg4 Rh2 55. Rc6+ Kh7 56. Rc7+ Kh6 57. Rxa7 1-0

[Event "Hoogeveen Amateurs op 25th"]
[Site "Hoogeveen"]
[Date "2022.10.18"]
[Round "4.1"]
[White "Mohtaat, Homayoun"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B28"]
[WhiteElo "1799"]
[BlackElo "1942"]
[PlyCount "123"]
[EventDate "2022.10.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 b5 2. e4 Bb7 3. Bd3 c5 4. c3 Nf6 5. Nd2 cxd4 6. cxd4 e6 7. Ngf3 a6 8. 0-0 Be7 9. Re1 0-0 10. Nf1 Nc6 11. a3 Rc8 12. b3 b4 13. a4 g6 14. Bb2 d5 15. e5 Ne8 16. Qd2 Ng7 17. Qh6 Na5 18. N1d2 Ra8 19. Rac1 Bc8 20. Rc2 Bd7 21. Rec1 Ra7 22. Qe3 Re8 23. Qe2 Qa8 24. Rc7 Bc8 25. R7c2 Bd7 26. g4 Rc8 27. Rxc8+ Bxc8 28. Qe3 Bd7 29. Qh6 Qd8 30. h4 Ne8 31. Ng5 Bxg5 32. hxg5 Qe7 33. Kg2 Qf8 34. Qh4 Qg7 35. Rc5 Nb7 36. Rc1 Na5 37. f4 Nc6 38. Rc5 Nb8 39. Qh1 a5 40. Qc1 Qf8 41. Nf3 Qe7 42. Kg3 Qd8 43. f5 Rc7 44. fxg6 fxg6 45. Qc2 Rxc5 46. dxc5 Qe7 47. Bd4 Bc6 48. Bb5 Nc7 49. Qe2 Qe8 50. Bd3 Qe7 51. Be3 Qe8 52. Nd4 Qe7 53. Nb5 Bxb5 54. axb5 d4 55. Bxd4 Qxg5 56. Qe3 Qd8 57. Bc4 Nd5 58. Qf3 h5 59. gxh5 Qg5+ 60. Qg4 Qxg4+ 61. Kxg4 gxh5+ 62. Kxh5 1-0

[Event "Hoogeveen Amateurs op 25th"]
[Site "Hoogeveen"]
[Date "2022.10.17"]
[Round "3.3"]
[White "Van der Werff, Frank"]
[Black "Kompaan, Rick"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1942"]
[BlackElo "1785"]
[PlyCount "139"]
[EventDate "2022.10.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. cxd5 exd5 7. e3 h6 8. Bh4 g5 9. Bg3 Nh5 10. Bd3 Nxg3 11. hxg3 Qf6 12. Qc2 Bb4 13. 0-0 g4 14. Nh4 Nb6 15. a3 Bd6 16. b4 Bd7 17. b5 Rc8 18. bxc6 Rxc6 19. Qb3 Be6 20. Bb5 0-0 21. Bxc6 bxc6 22. Na4 Rb8 23. Nxb6 axb6 24. Qd3 h5 25. Rfd1 Bd7 26. a4 Ra8 27. Rdb1 Bc7 28. e4 dxe4 29. Qxe4 Qe6 30. Qxe6 Bxe6 31. Rc1 Bd7 32. d5 c5 33. Re1 Bd6 34. Rab1 Rb8 35. Re4 Kg7 36. Kh2 f5 37. Rc4 Kf6 38. Rb3 Be8 39. Re3 Bf7 40. Rd3 Re8 41. Re3 Rxe3 42. fxe3 Bxd5 43. Rc1 Bc6 44. Rf1 f4 45. gxf4 Bxa4 46. e4 Bc7 47. e5+ Ke6 48. g3 Bb5 49. Ra1 c4 50. Re1 Bd8 51. f5+ Kf7 52. Ng2 Bg5 53. Rb1 Ba4 54. Rxb6 c3 55. Rb7+ Ke8 56. Nf4 c2 57. Rc7 Bd8 58. Rc4 Bb3 59. Rc6 Ba4 60. Re6+ Kd7 61. Rd6+ Kc8 62. Nd3 Bc7 63. Rd5 Bb6 64. f6 Be3 65. f7 Bh6 66. e6 Bf8 67. Ra5 Bb3 68. Ra8+ Kc7 69. Rxf8 Bxe6 70. Rc8+ 1-0

[Event "Hoogeveen Amateurs op 25th"]
[Site "Hoogeveen"]
[Date "2022.10.16"]
[Round "2.3"]
[White "Mentink, Toon"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "1733"]
[BlackElo "1942"]
[PlyCount "70"]
[EventDate "2022.10.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 b5 2. Nf3 Bb7 3. Bf4 e6 4. e3 a6 5. Be2 Nf6 6. h3 Be7 7. 0-0 0-0 8. Nbd2 c5 9. c4 bxc4 10. Nxc4 d5 11. Nce5 Qb6 12. a4 a5 13. Rc1 Nbd7 14. Nxd7 Nxd7 15. Bd3 Rac8 16. Qe2 Rfe8 17. Rfd1 Bf6 18. Ng5 Bxg5 19. Bxg5 cxd4 20. Rxc8 Bxc8 21. exd4 e5 22. dxe5 Rxe5 23. Qc2 Rxg5 24. Qxc8+ Nf8 25. Re1 Qd6 26. Re8 g6 27. f4 Rg3 28. Bb5 Kg7 29. Rd8 Qb4 30. Kf2 Qxf4+ 31. Kg1 Qd4+ 32. Kh2 Qf4 33. Qa6 Re3+ 34. Kh1 Re1+ 35. Bf1 Rxf1+ 0-1

[Event "Hoogeveen Amateurs op 25th"]
[Site "Hoogeveen"]
[Date "2022.10.15"]
[Round "1"]
[White "Van der Werff, Frank"]
[Black "Shah, Shrey"]
[Result "1-0"]
[ECO "D19"]
[WhiteElo "1942"]
[BlackElo "1528"]
[PlyCount "115"]
[EventDate "2022.10.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Nbd7 8. 0-0 Bb4 9. Qe2 0-0 10. e4 Bg6 11. e5 Nd5 12. Ne4 Be7 13. Bd2 Rc8 14. Rfc1 c5 15. Nxc5 Nxc5 16. dxc5 Bxc5 17. a5 a6 18. Bg5 Be7 19. Bxe7 Nxe7 20. Ng5 Rc6 21. b3 h6 22. Ne4 Bxe4 23. Qxe4 Ng6 24. g3 Qc7 25. f4 Rc8 26. Re1 Rc5 27. Bxe6 fxe6 28. Qxg6 Qf7 29. Qxf7+ Kxf7 30. Re2 Rc1+ 31. Rxc1 Rxc1+ 32. Kf2 Rc3 33. Re3 Rc5 34. b4 Rc4 35. Rb3 Ke7 36. h3 g5 37. Kf3 gxf4 38. gxf4 h5 39. b5 Rc5 40. bxa6 bxa6 41. Rb7+ Kd8 42. Rb6 Rxa5 43. Rxe6 Ra3+ 44. Ke4 a5 45. Ra6 Rxh3 46. Rxa5 h4 47. e6 Rg3 48. Rh5 Ke7 49. Kf5 Re3 50. Rh7+ Kd6 51. Rd7+ Kc6 52. Rd2 h3 53. Kf6 Re4 54. f5 Rh4 55. e7 Rh8 56. Kg7 h2 57. Rxh2 Rxh2 58. e8Q+ 1-0

[Event "Vlissingen HZ op 17th"]
[Site "Vlissingen"]
[Date "2013.08.09"]
[Round "8"]
[White "Meertens, Martin"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2177"]
[BlackElo "1983"]
[PlyCount "81"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bg5 h6 8. Bh4 g5 9. Bg3 Bg7 10. h3 Ne5 11. f3 Nbc6 12. Bf2 b5 13. Qd2 Rb8 14. 0-0-0 Nxd4 15. Bxd4 Qa5 16. a3 Be6 17. Nd5 Qxd2+ 18. Rxd2 Bxd5 19. exd5 Rg8 20. Kb1 Ng6 21. Bxg7 Rxg7 22. a4 Ne5 23. Rd4 Nc4 24. Bxc4 bxc4 25. Rxc4 Kd7 26. Rc6 Ra8 27. Rb6 Kc7 28. a5 e5 29. Re1 Rgg8 30. Re3 Rgb8 31. Rc3+ Kd7 32. Rcc6 Rxb6 33. Rxb6 Rc8 34. Rxa6 Rc5 35. Ra7+ Ke8 36. b4 Rxd5 37. Rb7 Kd8 38. Rxf7 Rb5 39. c3 d5 40. Kc2 d4 41. Rh7 1-0

[Event "Vlissingen HZ op 17th"]
[Site "Vlissingen"]
[Date "2013.08.07"]
[Round "6"]
[White "Maatman, Nick"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "E21"]
[WhiteElo "2207"]
[BlackElo "1983"]
[PlyCount "147"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. d4 b6 5. Qb3 a5 6. a3 a4 7. Qc2 Bxc3+ 8. bxc3 Bb7 9. Nd2 0-0 10. e4 d6 11. Bd3 e5 12. 0-0 Nc6 13. f4 exd4 14. Bb2 dxc3 15. Qxc3 Ne8 16. Rf3 Qf6 17. e5 dxe5 18. fxe5 Qxe5 19. Qxe5 Nxe5 20. Bxe5 Bxf3 21. Nxf3 Nd6 22. Bxd6 cxd6 23. Rb1 Rfe8 24. Kf2 g6 25. Nd4 Rac8 26. Rxb6 d5 27. cxd5 Rc3 28. Bb5 Rd8 29. d6 Rxa3 30. d7 Rc3 31. Ra6 Rc7 32. Rxa4 Rcxd7 33. Bxd7 Rxd7 34. Kf3 Kg7 35. h4 h6 36. Nc2 Rc7 37. Ne3 Rb7 38. g4 Rc7 39. Ra3 Rb7 40. Rc3 Ra7 41. Rc4 Rb7 42. Nd5 Ra7 43. Rc7 Ra3+ 44. Ne3 Ra5 45. Rd7 Ra3 46. Rb7 Ra4 47. Rc7 Ra5 48. h5 Ra6 49. hxg6 Kxg6 50. Rc5 Rb6 51. Ng2 Rb8 52. Kf4 Rb4+ 53. Kf3 Rb3+ 54. Ne3 Rb6 55. Ra5 Rf6+ 56. Kg3 Rb6 57. Nd5 Rb1 58. Nf4+ Kh7 59. Ne2 Rb3+ 60. Kh4 Rb1 61. Ng3 Rb6 62. Nf5 Rb1 63. Ra6 Rh1+ 64. Kg3 Rg1+ 65. Kf3 Rf1+ 66. Kg2 Rb1 67. Rxh6+ Kg8 68. Kg3 Rg1+ 69. Kf4 Rf1+ 70. Kg5 Ra1 71. Rb6 Ra5 72. Kf6 Ra8 73. Rc6 Rb8 74. Rc8+ 1-0

[Event "Vlissingen HZ op 17th"]
[Site "Vlissingen"]
[Date "2013.08.05"]
[Round "4"]
[White "Bijlsma, Nick"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2166"]
[BlackElo "1983"]
[PlyCount "113"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 d6 4. Bg2 g6 5. e3 Bg7 6. Nge2 0-0 7. 0-0 c6 8. d4 Re8 9. h3 h5 10. e4 exd4 11. Nxd4 Nbd7 12. Re1 Nc5 13. Bf4 Nh7 14. Nb3 Nxb3 15. axb3 Be5 16. Be3 a6 17. f4 Bg7 18. Qd3 Qc7 19. Rad1 Bf8 20. f5 Bg7 21. g4 hxg4 22. hxg4 g5 23. Qxd6 Qxd6 24. Rxd6 Be5 25. Rd3 f6 26. Bb6 Nf8 27. Red1 Kf7 28. Na4 Nd7 29. Rxd7+ Bxd7 30. Rxd7+ Re7 31. Rd3 Ke8 32. Rh3 Rf7 33. Kf1 Rc8 34. Bc5 Rd8 35. Nb6 Bd6 36. Bxd6 Rxd6 37. Rh8+ Rf8 38. Rxf8+ Kxf8 39. Ke2 Rd4 40. Bf3 Rd8 41. c5 Ke7 42. Nc4 Rh8 43. Bg2 Rh2 44. Kf3 Rh8 45. e5 fxe5 46. Nxe5 Kf6 47. Nc4 Rd8 48. Ke2 Rf8 49. Bf3 Re8+ 50. Kd2 Rd8+ 51. Kc2 Rh8 52. Nd6 Rh7 53. Ne4+ Ke5 54. Nxg5 Rh2+ 55. Kc3 Kf4 56. Ne6+ Kxf3 57. f6 1-0

[Event "Vlissingen HZ op 17th"]
[Site "Vlissingen"]
[Date "2013.08.04"]
[Round "2"]
[White "Tiggelman, Rene"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "2285"]
[BlackElo "1983"]
[PlyCount "89"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Ne1 Bxg2 10. Nxg2 d5 11. Qa4 dxc4 12. Qxc4 c5 13. dxc5 Bxc5 14. Be3 Nd7 15. Rfd1 Qe7 16. Rac1 Bxe3 17. Nxe3 Nf6 18. Qc7 Qxc7 19. Rxc7 Rfc8 20. Rdc1 Rxc7 21. Rxc7 Nd5 22. Nxd5 exd5 23. Kf1 g6 24. Ke1 Kg7 25. Kd2 a5 26. Rd7 b5 27. Rxd5 Rb8 28. Kd3 Kf6 29. Kd4 Ke6 30. e4 h5 31. f4 a4 32. f5+ Kf6 33. fxg6 Kxg6 34. h4 f6 35. Ke3 a3 36. bxa3 Ra8 37. Rd3 Ra4 38. Rb3 f5 39. exf5+ Kxf5 40. Rxb5+ Kg6 41. Rb3 Kf5 42. Kd2 Kg6 43. Kc3 Rg4 44. Kb2 Re4 45. Rf3 1-0

[Event "NED-ch U21"]
[Site "Sneek"]
[Date "2013.05.02"]
[Round "6"]
[White "Van der Werff, Frank"]
[Black "Vos, Tjark"]
[Result "0-1"]
[ECO "B97"]
[WhiteElo "1974"]
[BlackElo "2039"]
[PlyCount "64"]
[EventDate "2013.04.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Rb1 Qa3 10. Be2 Nbd7 11. 0-0 Be7 12. f5 e5 13. Nb3 Qb4 14. a3 Qb6+ 15. Be3 Qc6 16. Na5 Qc7 17. Nd5 Nxd5 18. exd5 Bd8 19. Nb3 Nf6 20. c4 Bd7 21. Qb4 0-0 22. Nd2 b5 23. g4 bxc4 24. Bxc4 Nxg4 25. Bb6 Qb8 26. Rf3 a5 27. Qb3 Qc8 28. Bxd8 Rxd8 29. Ne4 Bxf5 30. Bd3 Nh6 31. Kg2 Bxe4 32. Bxe4 Qg4+ 0-1

[Event "NED-ch U21"]
[Site "Sneek"]
[Date "2013.04.29"]
[Round "3"]
[White "Kazarian, Anna Maja"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "1947"]
[BlackElo "1974"]
[PlyCount "106"]
[EventDate "2013.04.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. Qd2 Be7 9. 0-0-0 Ng4 10. g3 0-0 11. Kb1 Nd7 12. f4 Nxe3 13. Qxe3 f6 14. Nd5 Re8 15. f5 Bxd5 16. Rxd5 b5 17. Rd1 Qc7 18. c4 Rec8 19. Rc1 b4 20. Qd2 a5 21. Qd5+ Kh8 22. Nd2 a4 23. h4 Nc5 24. Nf3 Ra5 25. Qd2 Nxe4 26. Qe1 Nc5 27. g4 Qc6 28. Qe3 Qe4+ 29. Qxe4 Nxe4 30. Rh2 Ng3 31. Bh3 Ne4 32. Re2 Nc5 33. Re3 b3 34. a3 Bd8 35. Ne1 Bb6 36. Re2 e4 37. Bg2 Re8 38. Rd1 Bc7 39. Rd4 e3 40. Bc6 Re7 41. Ng2 Nd7 42. Bxd7 Rxd7 43. Rxe3 h5 44. Re8+ Kh7 45. Rd5 Rxd5 46. cxd5 hxg4 47. Nf4 Rd8 48. Re3 Bb6 49. Re4 Rc8 50. Nd3 g3 51. Re2 Rc2 52. Nc1 Rxc1+ 53. Kxc1 Bf2 0-1

[Event "NED-ch U21"]
[Site "Sneek"]
[Date "2013.04.28"]
[Round "2"]
[White "Van der Werff, Frank"]
[Black "Bakker, Jouke"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1974"]
[PlyCount "72"]
[EventDate "2013.04.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. f4 e5 2. fxe5 Nc6 3. Nf3 Bc5 4. e3 d5 5. d4 Bb6 6. c4 Bg4 7. cxd5 Qxd5 8. Nc3 Ba5 9. Be2 Nge7 10. 0-0 Qd7 11. Qa4 h5 12. Bb5 Bxc3 13. bxc3 a6 14. Rb1 0-0 15. Bxc6 bxc6 16. e4 Ng6 17. Ba3 Rfe8 18. Rb7 Nf4 19. Rb2 h4 20. Qc2 h3 21. g3 Ng2 22. Qf2 Qd8 23. Qd2 a5 24. Ng5 f6 25. exf6 gxf6 26. Nf3 Rxe4 27. Qh6 Qe8 28. Nh4 Re1 29. Rbf2 Rxf1+ 30. Rxf1 Nxh4 31. gxh4 Qe4 32. Qd2 Be2 33. Rf2 Qg4+ 34. Kh1 Bf3+ 35. Rxf3 Qxf3+ 36. Kg1 Kf7 0-1

[Event "NED-ch U21"]
[Site "Sneek"]
[Date "2013.04.27"]
[Round "1"]
[White "Haast, Anne"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B36"]
[WhiteElo "2266"]
[BlackElo "1974"]
[PlyCount "31"]
[EventDate "2013.04.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Bg5 0-0 10. Qd2 Be6 11. Rc1 Qa5 12. 0-0 Rfc8 13. b3 b5 14. cxb5 Rxc3 15. Rxc3 Nxe4 16. Rc8+ 1-0

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.11"]
[Round "9"]
[White "Van der Werff, Frank"]
[Black "Peeters, Marloes"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1909"]
[BlackElo "2037"]
[PlyCount "87"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. f4 d5 2. e3 Nc6 3. Nf3 g6 4. Bb5 Bd7 5. 0-0 Bg7 6. d3 a6 7. Bxc6 Bxc6 8. Qe1 Nf6 9. Nc3 b5 10. a3 0-0 11. e4 e6 12. e5 Nd7 13. d4 Bb7 14. Be3 Qe7 15. Ne2 c5 16. c3 Rac8 17. Kh1 cxd4 18. Bxd4 Nc5 19. Bxc5 Rxc5 20. Ned4 Bh6 21. Qg3 Bc8 22. Rae1 a5 23. Ng5 b4 24. axb4 axb4 25. Rf3 bxc3 26. bxc3 Bg7 27. Rfe3 h6 28. Nh3 Qc7 29. Qf3 Bd7 30. g4 Rc8 31. f5 Rxc3 32. fxg6 fxg6 33. Nf4 Rxe3 34. Qxe3 Qc3 35. Qxc3 Rxc3 36. Nfxe6 Bxe6 37. Nxe6 Rc4 38. g5 Re4 39. Rxe4 dxe4 40. gxh6 Bxe5 41. Ng5 Bf4 42. h4 Bg3 43. h5 gxh5 44. Nxe4 1/2-1/2

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.10"]
[Round "8"]
[White "Rosmuller, Anton J"]
[Black "Van der Werff, Frank"]
[Result "1/2-1/2"]
[ECO "E90"]
[WhiteElo "2091"]
[BlackElo "1909"]
[PlyCount "44"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 0-0 5. e4 d6 6. Bg5 h6 7. Bf4 c6 8. h3 a6 9. e5 dxe5 10. dxe5 Qxd1+ 11. Rxd1 Nfd7 12. Bd3 a5 13. 0-0 Nc5 14. Be2 Nba6 15. g4 h5 16. Nd4 f6 17. exf6 Bxf6 18. Be3 a4 19. Kg2 e5 20. Nc2 hxg4 21. hxg4 Be6 22. f3 Rad8 1/2-1/2

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.08"]
[Round "6"]
[White "Bottema, Martin"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "A96"]
[WhiteElo "2084"]
[BlackElo "1909"]
[PlyCount "103"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. d4 f5 2. g3 e6 3. Bg2 Nf6 4. Nf3 Be7 5. 0-0 0-0 6. c4 d6 7. Nc3 Ne4 8. Nxe4 fxe4 9. Nd2 d5 10. f3 c5 11. fxe4 dxe4 12. Rxf8+ Bxf8 13. Nb3 cxd4 14. Qxd4 Qxd4+ 15. Nxd4 Bc5 16. Be3 Nc6 17. Nc2 Bxe3+ 18. Nxe3 Nd4 19. Rd1 e5 20. Rd2 Be6 21. Bxe4 Rd8 22. Kg2 b6 23. b3 Rf8 24. Nd5 Rf7 25. Nc3 g6 26. Bd5 Re7 27. e3 Nf5 28. Kf3 Kf7 29. Ne4 h6 30. g4 Ng7 31. Kg3 Ne8 32. Rf2+ Kg7 33. Bxe6 Rxe6 34. Rd2 Re7 35. b4 Kf7 36. c5 bxc5 37. Nxc5 Nf6 38. Kf3 Rc7 39. a3 Ke7 40. h4 g5 41. hxg5 hxg5 42. Rh2 a5 43. Ne4 axb4 44. axb4 Rc4 45. Nxf6 Kxf6 46. Rb2 e4+ 47. Ke2 Rc6 48. b5 Rb6 49. Kd2 Ke6 50. Kc3 Kd5 51. Kb4 Rb7 52. Rf2 1-0

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.05"]
[Round "3"]
[White "Van der Werff, Frank"]
[Black "Go, Benjamin"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1909"]
[BlackElo "2169"]
[PlyCount "52"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 Bg7 5. Be3 c6 6. Qd2 b5 7. 0-0-0 a5 8. a4 bxa4 9. Nxa4 Bd7 10. e5 Nd5 11. exd6 exd6 12. Bh6 0-0 13. Bxg7 Kxg7 14. h4 h5 15. g4 Rh8 16. c4 Nb4 17. c5 hxg4 18. Bc4 d5 19. Be2 Rxh4 20. Rxh4 Qxh4 21. fxg4 N8a6 22. Nb6 Rd8 23. Nxd7 Rxd7 24. Nf3 Qh3 25. Qf4 Re7 26. Bf1 Qxf1 0-1

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.04"]
[Round "1"]
[White "Van der Werff, Frank"]
[Black "Harika, Dronavalli"]
[Result "0-1"]
[ECO "C26"]
[WhiteElo "1909"]
[BlackElo "2503"]
[PlyCount "72"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 Bc5 5. Bg2 d6 6. d3 a6 7. 0-0 Be6 8. Be3 Bxe3 9. fxe3 Ne7 10. h3 c6 11. d4 Qc7 12. Qe2 Ng6 13. Nd2 Bd7 14. a4 0-0-0 15. d5 Kb8 16. a5 Ne7 17. Nc4 Nc8 18. Ra3 Be8 19. b4 Rf8 20. Rb1 cxd5 21. exd5 Na7 22. Nb6 Bb5 23. Qd2 Nd7 24. Nca4 Bxa4 25. Nxa4 Nb5 26. Rab3 Rc8 27. Rc1 f5 28. Bf1 f4 29. Bxb5 axb5 30. Rc3 Qd8 31. Rxc8+ Qxc8 32. Nb6 Nxb6 33. axb6 Qxh3 34. Qc3 Qxg3+ 35. Kh1 Qh4+ 36. Kg1 Qd8 0-1

[Event "Borne Euro Chess op-A"]
[Site "Borne"]
[Date "2011.08.05"]
[Round "7"]
[White "Bassant, Jesse"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1916"]
[BlackElo "1875"]
[PlyCount "106"]
[EventDate "2011.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 f5 2. h3 Nf6 3. g4 fxg4 4. hxg4 Nxg4 5. Qd3 g6 6. Rxh7 Rxh7 7. Qxg6+ Rf7 8. Qxg4 d6 9. Qh5 Qd7 10. Bh3 e6 11. Nf3 Nc6 12. d5 Nd8 13. Ng5 Qe7 14. Nxf7 Qxf7 15. Qxf7+ Kxf7 16. Bg5 exd5 17. Bxc8 Rxc8 18. Nc3 Ne6 19. Bd2 c6 20. 0-0-0 Bg7 21. e4 dxe4 22. Nxe4 Be5 23. f4 d5 24. fxe5 dxe4 25. Be3 Kg6 26. Rd7 Rc7 27. Rxc7 Nxc7 28. Bxa7 Kf5 29. Kd2 Ne6 30. Ke3 Kxe5 31. c4 Nf8 32. b4 b5 33. Bb8+ Kf5 34. Bd6 Ne6 35. cxb5 cxb5 36. a3 Ng5 37. Bf4 Nf7 38. Bg3 Ne5 39. Kd4 Nf3+ 40. Ke3 Ne5 41. Kd4 Nf3+ 42. Kc3 e3 43. Kd3 Kg4 44. Bc7 Nd4 45. Be5 e2 46. Kd2 Nf3+ 47. Kxe2 Nxe5 48. a4 bxa4 49. Kd2 Kf5 50. Kc3 Ke6 51. b5 a3 52. b6 Kd7 53. Kb3 Nc4 0-1

[Event "Borne Euro Chess op-A"]
[Site "Borne"]
[Date "2011.08.05"]
[Round "8"]
[White "Van der Werff, Frank"]
[Black "Kollen, Zyon"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1875"]
[BlackElo "2118"]
[PlyCount "65"]
[EventDate "2011.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. f4 d5 2. e3 Nf6 3. b3 g6 4. Bb2 Bg7 5. Nf3 0-0 6. Be2 c5 7. 0-0 Nc6 8. Ne5 Nxe5 9. Bxe5 b6 10. Nc3 Bb7 11. Bf3 Ne4 12. Bxg7 Kxg7 13. Ne2 Qc7 14. d3 Nf6 15. g4 e5 16. g5 Nd7 17. f5 f6 18. fxg6 hxg6 19. Nc3 Qd6 20. Nb5 Qc6 21. c4 e4 22. dxe4 dxe4 23. gxf6+ Rxf6 24. Bg2 Ne5 25. Rxf6 Qxf6 26. Qd6 Nf3+ 27. Kf2 Qb2+ 28. Kg3 Qxa1 29. Qd7+ Kh6 30. Qh3+ Kg5 31. Qg4+ Kf6 32. Qf4+ Kg7 33. Bxf3 0-1

[Event "Borne Euro Chess op-A"]
[Site "Borne"]
[Date "2011.08.04"]
[Round "6"]
[White "Van der Werff, Frank"]
[Black "Wijshoff, Kasper"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "1875"]
[PlyCount "81"]
[EventDate "2011.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. d3 d5 4. Qc2 d4 5. g3 c5 6. b4 b6 7. bxc5 bxc5 8. Bg2 Bb7 9. Bg5 Be7 10. Bxf6 Bxf6 11. 0-0 0-0 12. Nbd2 Nd7 13. Rab1 Qc7 14. Rxb7 Qxb7 15. Nxd4 Qc7 16. Nb5 Qb6 17. Bxa8 Rxa8 18. Rb1 Rb8 19. Nc3 Qa5 20. Rxb8+ Nxb8 21. Qa4 Qxa4 22. Nxa4 Nd7 23. Nb3 Be7 24. e3 e5 25. Na5 Nb6 26. Nxb6 axb6 27. Nc6 Bd6 28. Na7 Kf8 29. Kg2 Ke8 30. Kf3 Kd7 31. Nb5 Be7 32. Ke4 f6 33. Kd5 g5 34. g4 h6 35. h3 Bf8 36. Nc3 Be7 37. Ne4 Bd8 38. Nd6 Be7 39. Nf5 Bd8 40. f3 Bc7 41. Nxh6 1-0

[Event "Borne Euro Chess op-A"]
[Site "Borne"]
[Date "2011.08.03"]
[Round "5"]
[White "Mostertman, Milan"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2232"]
[BlackElo "1875"]
[PlyCount "63"]
[EventDate "2011.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bc1 Nf6 8. Be2 e6 9. 0-0 b5 10. Bf3 Ra7 11. Be3 Rd7 12. g4 h6 13. a3 Be7 14. h3 Bb7 15. Bg2 d5 16. e5 Ne4 17. f4 Nc6 18. Nce2 Nxd4 19. Nxd4 Bc5 20. c3 h5 21. gxh5 Bxd4 22. Bxd4 Ng3 23. Qg4 Nf5 24. Bf3 a5 25. Be2 b4 26. axb4 axb4 27. Bb5 g6 28. hxg6 Rg8 29. Qh5 Rxg6+ 30. Kh1 Nxd4 31. cxd4 Qb6 32. f5 1-0

[Event "Borne Euro Chess op-A"]
[Site "Borne"]
[Date "2011.08.03"]
[Round "4"]
[White "Van der Werff, Frank"]
[Black "Rijksen, Arnold"]
[Result "1-0"]
[ECO "C62"]
[WhiteElo "1875"]
[PlyCount "133"]
[EventDate "2011.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[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 d6 4. d4 exd4 5. Nxd4 Bd7 6. Bxc6 Bxc6 7. Nxc6 bxc6 8. 0-0 g6 9. Qd4 Qf6 10. Qa4 Ne7 11. Bd2 Qe6 12. Bc3 f6 13. Nd2 Bg7 14. Nf3 0-0 15. Nd4 Qd7 16. Rad1 Kh8 17. Rfe1 Rfd8 18. Nf3 Qe8 19. h3 c5 20. Qc4 Nc6 21. Nh2 Qg8 22. Qxg8+ Kxg8 23. Ng4 Ne5 24. Bxe5 fxe5 25. Ne3 Rab8 26. b3 Rd7 27. Rd3 Rb4 28. Nc4 Rb8 29. Red1 a6 30. Rd5 Rf7 31. R5d3 Rbf8 32. R1d2 Bf6 33. Re2 Bg5 34. Nd2 Bh6 35. Rf3 Bxd2 36. Rxf7 Rxf7 37. Rxd2 Kg7 38. Rd3 Rf4 39. Re3 Rf7 40. Kf1 Kf6 41. Rf3+ Ke6 42. Rxf7 Kxf7 43. Ke2 Ke6 44. Kd3 c6 45. Kc4 Kd7 46. h4 h6 47. g3 g5 48. hxg5 hxg5 49. Kd3 Ke6 50. f3 d5 51. Ke3 Kf6 52. f4 gxf4+ 53. gxf4 exf4+ 54. Kxf4 dxe4 55. Kxe4 Ke6 56. Kd3 Kd5 57. Kc3 a5 58. a3 Kd6 59. Kc4 Kc7 60. Kxc5 Kb7 61. a4 Kc7 62. c3 Kb7 63. Kd6 Kb6 64. c4 Kb7 65. c5 Ka6 66. Kxc6 Ka7 67. Kc7 1-0

[Event "Borne Euro Chess op-A"]
[Site "Borne"]
[Date "2011.08.02"]
[Round "3"]
[White "Otten, Martijn"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1956"]
[BlackElo "1875"]
[PlyCount "96"]
[EventDate "2011.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e4 Rh7 5. Bc4 e6 6. Qh5+ Rf7 7. Nf3 gxh4 8. Ne5 Qf6 9. Qxf7+ Qxf7 10. Nxf7 Kxf7 11. exf5 d5 12. fxe6+ Bxe6 13. Bd3 Nc6 14. c3 Re8 15. Kd1 Bd6 16. Nd2 h3 17. g3 Nf6 18. f3 Ne7 19. Kc2 Nf5 20. Rae1 b6 21. Rxe6 Kxe6 22. Re1+ Kf7 23. Rxe8 Nxd4+ 24. cxd4 Kxe8 25. Bf5 Kf7 26. Bxh3 h5 27. Bf5 h4 28. f4 Nh5 29. Nf1 c5 30. Kd3 Nf6 31. Ke3 hxg3 32. hxg3 Ne8 33. Nd2 Nc7 34. Nb3 Na6 35. g4 Nc7 36. Bd7 Ke7 37. Bc8 Nb5 38. a4 Nxd4 39. Nxd4 cxd4+ 40. Kxd4 Bxf4 41. Kxd5 Kd8 42. Ba6 Kc7 43. b3 Bd2 44. Ke6 Kc6 45. Bb5+ Kc7 46. Kf6 Kd6 47. g5 Bc3+ 48. Kf7 Kd5 1-0

[Event "Borne Euro Chess op-A"]
[Site "Borne"]
[Date "2011.08.02"]
[Round "2"]
[White "Van der Werff, Frank"]
[Black "De Vries, Geertien"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1875"]
[PlyCount "61"]
[EventDate "2011.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[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. Bd3 Nf6 5. c3 Be7 6. Bg5 Bg4 7. f3 Bh5 8. Ne2 Bg6 9. Nf4 Bxd3 10. Nxd3 0-0 11. 0-0 b6 12. Kh1 Nbd7 13. Ne5 Nxe5 14. dxe5 Nd7 15. Bxe7 Qxe7 16. Re1 c6 17. f4 Qc5 18. Nd2 b5 19. Nf3 Rac8 20. Qd3 h6 21. Nd4 Kh8 22. Nf5 Rce8 23. Qh3 Re6 24. Nd4 Rg6 25. Qxd7 b4 26. f5 Rg5 27. Qd6 Qxd6 28. exd6 Rd8 29. Ne6 fxe6 30. fxe6 Rxd6 31. e7 1-0

[Event "Borne Euro Chess op-A"]
[Site "Borne"]
[Date "2011.08.01"]
[Round "1"]
[White "Beukema, Stefan"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "2209"]
[BlackElo "1875"]
[PlyCount "67"]
[EventDate "2011.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 Nc6 5. d4 cxd4 6. cxd4 e6 7. Nc3 Be7 8. Bd3 a6 9. Be3 b5 10. 0-0 0-0 11. Nd2 e5 12. d5 Nb8 13. b4 Bxh3 14. gxh3 Qc8 15. Rc1 Qxh3 16. Qf3 Qg4+ 17. Qxg4 Nxg4 18. a4 Nxe3 19. fxe3 bxa4 20. Nxa4 Ra7 21. Nc4 Rc7 22. Ncb6 Rb7 23. Rc4 h5 24. Rfc1 g5 25. Rc7 Rxc7 26. Rxc7 Bd8 27. Rb7 Bxb6 28. Rxb6 Rd8 29. Bxa6 Nxa6 30. Rxa6 Rb8 31. Rb6 Ra8 32. Nc3 h4 33. b5 g4 34. Ra6 1-0

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.06"]
[Round "7"]
[White "Veltkamp, Bastiaan"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1796"]
[BlackElo "1819"]
[PlyCount "78"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nf3 e6 2. d4 f5 3. g4 fxg4 4. Ne5 Qh4 5. Bf4 Qf6 6. e3 Qd8 7. Nxg4 d6 8. e4 Nd7 9. Ne3 Ndf6 10. Nc3 g6 11. Qf3 Nh5 12. Ne2 c6 13. 0-0-0 Bd7 14. Rg1 Nxf4 15. Nxf4 Qe7 16. Bd3 e5 17. dxe5 dxe5 18. Nh3 Bh6 19. Bc4 0-0-0 20. Kb1 Nf6 21. Ng5 Bxg5 22. Rxg5 Nxe4 23. Rgg1 Nf6 24. Bb3 Rhf8 25. Nc4 Nd5 26. Qe2 Rde8 27. Qd2 b5 28. Na5 Qb4 29. Nxc6 Qxd2 30. Nxa7+ Kb8 31. Rxd2 Nb6 32. Rxd7 Nxd7 33. Nxb5 Rxf2 34. Nd6 Ref8 35. a4 Rf1+ 36. Rxf1 Rxf1+ 37. Ka2 Nc5 38. Ka3 Nxb3 39. Kxb3 Kc7 0-1

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.05"]
[Round "6"]
[White "Bijlsma, Nick"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2190"]
[BlackElo "1819"]
[PlyCount "175"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 b5 8. Bg2 Bb7 9. 0-0 Qc7 10. a3 Be7 11. f4 Nc6 12. Nde2 Na5 13. g5 Nd7 14. b3 Rc8 15. Bb2 0-0 16. Ng3 g6 17. Qg4 Rfe8 18. f5 Ne5 19. Qf4 Bf8 20. h4 Bg7 21. f6 Bf8 22. h5 Qb6+ 23. Kh2 Qe3 24. hxg6 hxg6 25. Rae1 Qxf4 26. Rxf4 Nxb3 27. Rh1 Nd4 28. Nd1 Nef3+ 29. Rxf3 Nxf3+ 30. Bxf3 Rxc2+ 31. Kg1 d5 32. e5 Rec8 33. Kf1 a5 34. Ne2 b4 35. axb4 axb4 36. Nd4 Ba6+ 37. Ke1 b3 38. Nxc2 bxc2 39. Rh4 cxd1Q+ 40. Kxd1 Bc4 41. Bd4 Bb4 42. Rh1 Bb5 43. Rg1 Rc4 44. Rg4 Kf8 45. Rh4 Kg8 46. Rg4 Ba5 47. Bb2 Rxg4 48. Bxg4 Bb4 49. Bd4 Kf8 50. Kc2 Ba4+ 51. Kd3 Ke8 52. Bf3 Kd7 53. Bc3 Ba3 54. Bg4 Kc6 55. Bd4 Kb7 56. Bc3 Bd7 57. Bd4 Ka6 58. Kc2 Ka5 59. Kd3 Bc1 60. Be3 Bb2 61. Bd4 Bc1 62. Be3 Bb5+ 63. Kd4 Ba3 64. Bd2+ Kb6 65. Kc3 Bc5 66. Kc2 Bd7 67. Kd3 Bb5+ 68. Kc2 d4 69. Bf3 d3+ 70. Kc3 Ka5 71. Kb3+ Kb6 72. Kc3 Kc7 73. Be4 Bb6 74. Bxd3 Ba5+ 75. Kd4 Bxd3 76. Bxa5+ Kc6 77. Kxd3 Kd5 78. Bc3 Kc5 79. Ba1 Kb5 80. Kd4 Kb6 81. Kc4 Kc6 82. Bd4 Kd7 83. Kb5 Kc7 84. Kc5 Kd7 85. Kb6 Kd8 86. Kc6 Ke8 87. Kc7 Kf8 88. Kd7 1-0

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.04"]
[Round "5"]
[White "Van der Werff, Frank"]
[Black "Bekker, Michael"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "1819"]
[BlackElo "1794"]
[PlyCount "42"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. g3 c5 5. Bg2 Nc6 6. Ngf3 Bd6 7. 0-0 b6 8. Re1 Qc7 9. Qe2 dxe4 10. dxe4 e5 11. c3 0-0 12. Nh4 Rd8 13. Nf5 Bf8 14. Nf1 h6 15. Qf3 Bxf5 16. exf5 e4 17. Qe2 Qd7 18. Nd2 Rac8 19. Nxe4 Qxf5 20. Nxf6+ Qxf6 21. Bxc6 Qxc6 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.03"]
[Round "4"]
[White "Vastenhout, Raimond"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1651"]
[BlackElo "1819"]
[PlyCount "58"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Bxd3 5. Qxd3 e6 6. Nf3 c5 7. dxc5 Bxc5 8. Qb5+ Nd7 9. Qxb7 Rb8 10. Qa6 Qc7 11. Qe2 Ne7 12. 0-0 Nc6 13. c3 Ndxe5 14. Nxe5 Qxe5 15. Qxe5 Nxe5 16. b4 Bd6 17. Be3 a5 18. bxa5 Nc4 19. Bd4 0-0 20. a6 e5 21. Be3 Nxe3 22. fxe3 Bc5 23. Re1 Rb2 24. Kf1 Rfb8 25. Rd1 Bxe3 26. Rxd5 f6 27. Na3 Rf2+ 28. Ke1 Rxg2 29. Rad1 Rbb2 0-1

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.02"]
[Round "3"]
[White "Van der Werff, Frank"]
[Black "Haver, Bas"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "1819"]
[BlackElo "1958"]
[PlyCount "96"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 d5 10. Kb1 Nxd4 11. e5 Nd7 12. Bxd4 Bxe5 13. Nxd5 Bxd4 14. Qxd4 e6 15. Nc3 Qf6 16. Qd6 e5 17. Qc7 Nb6 18. Ne4 Qg7 19. Nc5 f6 20. Qxg7+ Kxg7 21. a4 Bf5 22. g4 Rfc8 23. gxf5 Rxc5 24. fxg6 hxg6 25. Rg1 Rh8 26. Bd3 g5 27. Be4 Rc7 28. a5 Nc4 29. Rd5 Rxh2 30. Rgd1 Kf8 31. Rd8+ Ke7 32. Rg8 Rd2 33. Rh1 Rcd7 34. Bd3 Nxa5 35. Ka2 Kf7 36. Rgh8 Ke6 37. Re8+ Kd5 38. Rh6 Rd6 39. b4 Nc6 40. Kb3 Kd4 41. b5 Na5+ 42. Kb4 b6 43. Rh1 Ke3 44. f4 Kxf4 45. Rf1+ Kg3 46. Kc3 Rf2 47. Rg1+ Kf4 48. Rh8 e4 0-1

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.01"]
[Round "2"]
[White "Frima, Erik"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1316"]
[BlackElo "1819"]
[PlyCount "90"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 c6 6. e3 Nbd7 7. Bd3 Nh5 8. Be5 Nxe5 9. Nxe5 Nf6 10. 0-0 0-0 11. c5 Qc7 12. b4 a5 13. a3 b6 14. Na4 bxc5 15. bxc5 Ba6 16. Bxa6 Rxa6 17. Qd3 Ra7 18. Rab1 Nd7 19. Nxd7 Qxd7 20. Rb3 Qc7 21. Rfb1 e5 22. g3 exd4 23. exd4 Bf6 24. Nb6 Re8 25. Qd2 Qd8 26. Rd3 Bg5 27. f4 Bf6 28. Re1 Re4 29. Kf2 Rae7 30. Qxa5 Rxe1 31. Qxe1 Rxe1 32. Kxe1 Qe7+ 33. Kd2 Qe4 34. Kc3 Bxd4+ 35. Rxd4 Qe3+ 36. Rd3 Qxc5+ 37. Kb2 Qxb6+ 38. Rb3 Qxb3+ 39. Kxb3 Kf8 40. a4 Ke8 41. h4 f5 42. h5 c5 43. a5 Kd8 44. a6 Kc7 45. h6 g6 0-1

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.04.30"]
[Round "1"]
[White "Van der Werff, Frank"]
[Black "Beukema, Stefan"]
[Result "0-1"]
[ECO "C34"]
[WhiteElo "1819"]
[BlackElo "2172"]
[PlyCount "34"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. f4 e5 2. e4 exf4 3. Bc4 d6 4. Nf3 h6 5. b3 Bg4 6. Bb2 Nc6 7. Nc3 Nd4 8. Nxd4 Qh4+ 9. g3 fxg3 10. Nf3 g2+ 11. Ke2 Qh3 12. Kf2 gxh1Q 13. Qxh1 Be7 14. Nd5 Bxf3 15. Qxf3 Qxh2+ 16. Ke3 Bg5+ 17. Kd3 Qxd2# 0-1

[Event "Enschede op-C U14"]
[Site "Enschede"]
[Date "2009.08.07"]
[Round "7"]
[White "Van der Werff, Frank"]
[Black "Bosboom, Ardin"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "1728"]
[BlackElo "1274"]
[PlyCount "49"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. c5 Nd5 5. Nc3 Nxc3 6. dxc3 d6 7. cxd6 cxd6 8. exd6 Qxd6 9. Qxd6 exd6 10. Bf4 Be7 11. 0-0-0 0-0 12. Bxd6 Bxd6 13. Rxd6 Be6 14. b3 Re8 15. Nf3 Bg4 16. Bc4 g6 17. Ng5 Re7 18. Nxf7 Kf8 19. Rd8+ Kg7 20. f3 Bd7 21. Ng5 h6 22. Rg8+ Kf6 23. Ne4+ Kf5 24. Rf8+ Ke5 25. f4+ 1-0

[Event "Enschede op-C U14"]
[Site "Enschede"]
[Date "2009.08.05"]
[Round "6"]
[White "Dokter, Dani"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1061"]
[BlackElo "1728"]
[PlyCount "76"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. Bc4 g6 5. d3 Bg7 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 Nc6 9. Be3 Ng4 10. h3 Nxe3 11. fxe3 Qc7 12. Nd5 Qd8 13. c3 e6 14. Nxc6 bxc6 15. Nb4 Bb7 16. Qd2 c5 17. Nc2 Bxe4 18. Rad1 d5 19. Bb5 Qb6 20. Qe2 Bxc2 21. Qxc2 Qxb5 22. e4 d4 23. cxd4 cxd4 24. Rf3 Rfc8 25. Qf2 Rc7 26. Rf1 Qd7 27. Qh4 d3 28. e5 d2 29. Rd1 Rc1 30. Rff1 Rxd1 31. Rxd1 Rc8 32. Qf2 Rc1 33. Qf1 Rxd1 34. Qxd1 Qd3 35. a4 Qe3+ 36. Kh1 Bxe5 37. Qf1 Qe1 38. Qg1 d1Q 0-1

[Event "Enschede op-C U14"]
[Site "Enschede"]
[Date "2009.08.05"]
[Round "4"]
[White "Van der Werff, Frank"]
[Black "Ratsma, Midas"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1728"]
[BlackElo "1811"]
[PlyCount "62"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. b4 d5 2. Bb2 Nf6 3. Nf3 e6 4. a3 Be7 5. e3 0-0 6. c4 c5 7. b5 Nbd7 8. d4 dxc4 9. Bxc4 Nb6 10. Be2 cxd4 11. exd4 Nbd5 12. 0-0 b6 13. Nbd2 Bb7 14. Ne5 Rc8 15. Qb3 Nd7 16. f4 Nxf4 17. Bf3 Bxf3 18. Ndxf3 Nxe5 19. Nxe5 Ne2+ 20. Kh1 Nxd4 21. Qa4 Nf5 22. Nc6 Qd2 23. Bc1 Qe2 24. Bf4 Bf6 25. Rad1 Qg4 26. Qa6 g5 27. Bc1 Nh4 28. Rd2 Qc4 29. Rdf2 Nf5 30. Bd2 Rxc6 31. g4 Nh4 0-1

[Event "Enschede op-C U14"]
[Site "Enschede"]
[Date "2009.08.04"]
[Round "2"]
[White "Van der Werff, Frank"]
[Black "Ingelaere, Tijl"]
[Result "1-0"]
[ECO "C17"]
[WhiteElo "1728"]
[BlackElo "1136"]
[PlyCount "47"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 a6 6. Qg4 cxd4 7. Qxg7 dxc3 8. bxc3 Be7 9. Qxh8 Kd7 10. Qxh7 Qf8 11. Nf3 Nc6 12. Be2 b5 13. 0-0 Bc5 14. a4 Rb8 15. axb5 axb5 16. Rfb1 b4 17. cxb4 Bxb4 18. Bxb4 Rxb4 19. Rxb4 Nxb4 20. Ra7+ Kc6 21. Rxf7 Qe8 22. Nd4+ Kb6 23. c3 Nc6 24. Qb1+ 1-0

[Event "Enschede op-C U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "1"]
[White "De Mon, Gino"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1267"]
[BlackElo "1728"]
[PlyCount "57"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Nf6 4. Nc3 Qd6 5. d4 a6 6. h3 Nc6 7. Bc4 Bf5 8. Ne2 e6 9. Bf4 Qb4+ 10. Nd2 0-0-0 11. a3 Qxb2 12. Rb1 Qxc2 13. Qxc2 Bxc2 14. Rc1 Bg6 15. Bxa6 Bxa3 16. Rxc6 bxa6 17. Rxc7+ Kb8 18. Rc3+ Bd6 19. Bxd6+ Rxd6 20. 0-0 Nd5 21. Rb3+ Kc7 22. Rc1+ Rc6 23. Rxc6+ Kxc6 24. Nc3 Nxc3 25. Rxc3+ Kd5 26. Nf3 Rb8 27. Rc5+ Kd6 28. Ra5 Ra8 29. Re5 0-1

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2008.05.03"]
[Round "9"]
[White "Suilen, Willem"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B79"]
[WhiteElo "1564"]
[BlackElo "1504"]
[PlyCount "71"]
[EventDate "2008.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. h4 Nc4 13. Bxc4 Rxc4 14. h5 Qa5 15. Nb3 Qa6 16. hxg6 fxg6 17. Kb1 Rfc8 18. Nd5 Nxd5 19. Qxd5+ e6 20. Qxd6 Rxc2 21. Qxa6 Rxb2+ 22. Ka1 Rxb3+ 23. Rd4 Rxe3 24. Qd6 Rd3 25. e5 Rxd4 26. Qxd4 Bc6 27. Rc1 a6 28. Qd6 Kf7 29. Rc4 g5 30. f4 Bf8 31. Qd3 Kg7 32. Qg3 Be7 33. fxg5 Rf8 34. Qh4 Rf5 35. Qh6+ Kg8 36. g6 1-0

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2008.05.02"]
[Round "8"]
[White "Beeren, Thom"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B79"]
[WhiteElo "1668"]
[BlackElo "1504"]
[PlyCount "41"]
[EventDate "2008.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Bc4 Nc6 9. Qd2 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. g4 Nc4 13. Bxc4 Rxc4 14. h4 Qa5 15. Nb3 Qa6 16. h5 Rfc8 17. hxg6 fxg6 18. e5 Nxg4 19. fxg4 Bxe5 20. Bd4 Rxd4 21. Nxd4 1-0

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2008.05.02"]
[Round "7"]
[White "Van der Werff, Frank"]
[Black "Maris, Ivo"]
[Result "0-1"]
[ECO "C91"]
[WhiteElo "1504"]
[BlackElo "1780"]
[PlyCount "90"]
[EventDate "2008.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[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. d4 d6 9. c3 Bg4 10. Be3 Na5 11. Bc2 Nd7 12. h3 Bh5 13. Nbd2 c5 14. d5 Nb7 15. Nf1 c4 16. a4 Ndc5 17. Bxc5 Nxc5 18. axb5 axb5 19. Rxa8 Qxa8 20. Ng3 Bxf3 21. Qxf3 Qa2 22. Nf5 Re8 23. Qg4 g6 24. Re3 Qxb2 25. Bd1 Nd3 26. Be2 Nf4 27. g3 Nxd5 28. exd5 Qb1+ 29. Kh2 Qxf5 30. Qxf5 gxf5 31. Bf3 Bf6 32. Bg2 Ra8 33. g4 fxg4 34. hxg4 Ra3 35. Kg3 Bg5 36. Rf3 Bd2 37. Kh2 Rxc3 38. Rf6 Bf4+ 39. Kg1 Rc1+ 40. Bf1 c3 41. Rxd6 c2 42. Rc6 Rxf1+ 43. Kxf1 c1Q+ 44. Rxc1 Bxc1 45. d6 Kf8 0-1

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2008.05.01"]
[Round "6"]
[White "Van der Werff, Frank"]
[Black "Mostertman, Xander"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1504"]
[BlackElo "1649"]
[PlyCount "28"]
[EventDate "2008.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Be2 Bd6 6. 0-0 0-0 7. Bg5 Bg4 8. h3 Bh5 9. Nc3 c6 10. Ne5 Bxe2 11. Qxe2 Re8 12. f4 Nbd7 13. Qd3 Qb6 14. Kh2 Qc7 1/2-1/2

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2008.04.30"]
[Round "5"]
[White "Kollen, Zyon"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "1811"]
[BlackElo "1504"]
[PlyCount "59"]
[EventDate "2008.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Nxd5 cxd5 13. Qxd5 Qc7 14. Qc5 Qb7 15. Qa3 Rb8 16. Bd4 Be6 17. Bxg7 Kxg7 18. Rd3 Kg8 19. Rc3 Rfd8 20. b3 Qd5 21. Qc5 Qd2+ 22. Kb2 Rbc8 23. Qe3 Qxe3 24. Rxe3 Rd2 25. Rc3 Rxc3 26. Kxc3 Rf2 27. Rg1 Kg7 28. Bd3 Kf6 29. Kd4 Bf5 30. Ke3 1-0

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2008.04.30"]
[Round "4"]
[White "Van der Werff, Frank"]
[Black "Loots, Jeroen"]
[Result "1/2-1/2"]
[ECO "B03"]
[WhiteElo "1504"]
[BlackElo "1658"]
[PlyCount "64"]
[EventDate "2008.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 exd6 6. Nf3 Be7 7. Be2 0-0 8. Nc3 Bf6 9. Be3 g6 10. 0-0 Bg7 11. Rc1 Bf5 12. Qd2 Re8 13. b4 Nc6 14. b5 Ne7 15. a4 Nd7 16. Ne1 Nf6 17. Bf3 c6 18. Nd3 d5 19. c5 Ne4 20. Bxe4 dxe4 21. Nf4 Qc7 22. Nfe2 Rad8 23. Bf4 Qd7 24. Rfd1 Nd5 25. Nxd5 Qxd5 26. h3 Qd7 27. Kh2 cxb5 28. axb5 Qxb5 29. Ra1 a6 30. Rab1 Qd7 31. Rb6 Qd5 32. Qb4 Bc8 1/2-1/2

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2008.04.29"]
[Round "3"]
[White "Van Veelen, Thomas"]
[Black "Van der Werff, Frank"]
[Result "1/2-1/2"]
[ECO "D55"]
[WhiteElo "1664"]
[BlackElo "1504"]
[PlyCount "64"]
[EventDate "2008.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. e3 b6 6. Nc3 0-0 7. Bxf6 Bxf6 8. cxd5 exd5 9. Bd3 Bb7 10. 0-0 Nd7 11. Rc1 c5 12. Bf5 cxd4 13. Nxd4 g6 14. Bxd7 Qxd7 15. Ncb5 Ba6 16. Rc7 Qe8 17. Qa4 Bxb5 18. Qxb5 Qxb5 19. Nxb5 Bxb2 20. Nxa7 d4 21. exd4 Bxd4 22. Rd1 Rfd8 23. Kf1 Bc5 24. Rdd7 Rxd7 25. Rxd7 b5 26. Nxb5 Rxa2 27. Nd4 Bxd4 28. Rxd4 Kg7 29. g3 g5 30. Kg2 Kg6 31. h3 f6 32. Re4 Rc2 1/2-1/2

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2008.04.29"]
[Round "2"]
[White "Van der Werff, Frank"]
[Black "Van der Auweraert, Elwin"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "1504"]
[BlackElo "1707"]
[PlyCount "122"]
[EventDate "2008.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 a6 6. c4 e6 7. Nc3 Nbd7 8. Be2 Qc7 9. 0-0 Be7 10. Be3 0-0 11. Qd2 Ne5 12. b3 Bd7 13. Rfd1 Rfd8 14. Rac1 Rac8 15. Bf1 Bc6 16. Qf2 Rd7 17. Nde2 Qb8 18. Ba7 Qa8 19. Bb6 Bd8 20. Bxd8 Rcxd8 21. Nd4 d5 22. exd5 exd5 23. c5 Qb8 24. a4 Ng6 25. b4 Re7 26. b5 axb5 27. axb5 Be8 28. c6 Rc7 29. b6 Rxc6 30. Nxc6 Bxc6 31. Bb5 Ne5 32. Bxc6 Nxc6 33. Nb5 Qf4 34. Nd4 Na5 35. Ra1 Nc4 36. Ra7 Nd6 37. Qd2 Qxd2 38. Rxd2 g6 39. Rb2 Rd7 40. Nb5 Nc4 41. Rc2 Nxb6 42. Rc7 Rxc7 43. Nxc7 Nc4 44. Rxb7 Ne3 45. Rb8+ Kg7 46. Ne8+ Nxe8 47. Rxe8 Nf5 48. Re5 d4 49. Rd5 Kf6 50. g4 Ke6 51. Rd8 Ke7 52. Ra8 Ng7 53. Kf2 Kf6 54. Rh8 h5 55. Ra8 hxg4 56. fxg4 Ne6 57. h4 g5 58. h5 Kg7 59. Kf3 Kf6 60. Ke4 Kg7 61. Ra6 Nc5+ 0-1

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2008.04.28"]
[Round "1"]
[White "Admiraal, Miguoel"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "1842"]
[BlackElo "1504"]
[PlyCount "97"]
[EventDate "2008.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. g3 Nf6 4. Bg2 g6 5. d3 Bg7 6. Nge2 0-0 7. h3 Nc6 8. Be3 Bd7 9. 0-0 Rc8 10. f4 a6 11. g4 b5 12. Qd2 b4 13. Nd1 e6 14. e5 dxe5 15. Bxc5 Re8 16. fxe5 Nxe5 17. Bxb4 Qb6+ 18. Kh1 Bc6 19. Bc3 Bxg2+ 20. Kxg2 Qc6+ 21. Kg3 Nd5 22. Nf4 Qd6 23. h4 Nxc3 24. Nxc3 Nc4 25. Ne4 Nxd2 26. Nxd6 Nxf1+ 27. Rxf1 Bxb2 28. Nxe8 Rxe8 29. Ng2 Bd4 30. Rb1 Rc8 31. c4 Rc6 32. Kf3 f5 33. Rb8+ Kf7 34. Rb7+ Kg8 35. Nf4 Bf6 36. g5 Be5 37. Ne2 Rd6 38. Ke3 Kh8 39. d4 f4+ 40. Ke4 f3 41. Kxf3 Bxd4 42. Nxd4 Rxd4 43. c5 Rc4 44. Rc7 e5 45. Rc8+ Kg7 46. c6 Kf7 47. c7 a5 48. Rh8 Kg7 49. c8Q 1-0

[Event "Twente Young Master op-D"]
[Site "Twente"]
[Date "2007.08.11"]
[Round "13"]
[White "Schippers, Philippe"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "1683"]
[BlackElo "1523"]
[PlyCount "93"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 Nxd4 10. Bxd4 Be6 11. g4 Qa5 12. Kb1 Rfc8 13. a3 Rab8 14. Nb5 Qxd2 15. Rxd2 a6 16. Nc3 b5 17. b4 Bc4 18. Kb2 Nd7 19. Bxg7 Kxg7 20. f4 Bxf1 21. Rxf1 Nb6 22. Kb3 Rc6 23. h4 Nc4 24. Rd3 Rbc8 25. Rff3 Nb6 26. f5 Nc4 27. Rg3 Ne5 28. Rde3 Nc4 29. Rd3 Ne5 30. Rd2 Nc4 31. Rf2 Nxa3 32. fxg6 fxg6 33. Rgf3 Kh8 34. h5 gxh5 35. gxh5 h6 36. Rg2 Nc4 37. Nd5 Ne5 38. Rfg3 Re8 39. Rg7 Rc4 40. Nxe7 Rxe4 41. Nf5 Nc6 42. Nxd6 Re3+ 43. Kb2 Rf8 44. Nf7+ Rxf7 45. Rxf7 Ne7 46. Rf6 Ng8 47. Rf8 1-0

[Event "Twente Young Master op-D"]
[Site "Twente"]
[Date "2007.08.10"]
[Round "10"]
[White "Minderman, Chiel"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "1524"]
[BlackElo "1523"]
[PlyCount "60"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. Be3 0-0 8. f3 Nc6 9. Qd2 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. g4 Nc4 13. Bxc4 Rxc4 14. h4 Qa5 15. Nb3 Qc7 16. h5 b5 17. hxg6 fxg6 18. e5 b4 19. exf6 bxc3 20. bxc3 Bxf6 21. Qh2 Rf7 22. Bd4 e5 23. Bxa7 Qxa7 24. Rxd6 Rc6 25. Rd5 Be6 26. Ra5 Qb7 27. Nc5 Bg5+ 28. f4 Rxc5 29. fxg5 Rxa5 30. Qd2 Qxh1+ 0-1

[Event "Twente Young Master op-D"]
[Site "Twente"]
[Date "2007.08.10"]
[Round "9"]
[White "Van der Werff, Frank"]
[Black "Bruggeman, Kevin"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1523"]
[BlackElo "1416"]
[PlyCount "69"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d5 5. d3 Be7 6. g3 Nf6 7. Bd2 b6 8. Bg2 Rb8 9. a4 Bb7 10. 0-0 0-0 11. h3 d4 12. Nb5 a6 13. Na3 Ne8 14. g4 f6 15. Qe1 e5 16. f5 Nd6 17. h4 h6 18. Qg3 Nf7 19. Rf2 Nb4 20. Bf1 Bc8 21. Rg2 Rb7 22. g5 fxg5 23. hxg5 hxg5 24. Nxg5 Bf6 25. Be2 Nc6 26. Bh5 Nh8 27. Qh4 Nf7 28. Bxf7+ Rfxf7 29. Qh7+ Kf8 30. Nxf7 Rxf7 31. Qh8+ Ke7 32. Qxd8+ Nxd8 33. Bg5 Bxg5 34. Rxg5 Kd6 35. Nc4+ 1-0

[Event "Twente Young Master op-D"]
[Site "Twente"]
[Date "2007.08.10"]
[Round "11"]
[White "Van der Werff, Frank"]
[Black "Ocelik, Vaclav"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1523"]
[BlackElo "1609"]
[PlyCount "20"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. f4 Bg7 4. Nf3 Nd7 5. Bd3 e5 6. Be3 Ne7 7. 0-0 0-0 8. Nbd2 f5 9. exf5 Nxf5 10. Bxf5 gxf5 1/2-1/2

[Event "Twente Young Master op-D"]
[Site "Twente"]
[Date "2007.08.09"]
[Round "8"]
[White "Kollen, Zyon"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "1874"]
[BlackElo "1523"]
[PlyCount "51"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 Nxd4 10. Bxd4 Be6 11. Kb1 a6 12. g4 b5 13. h4 b4 14. Nd5 Bxd5 15. exd5 a5 16. h5 Rb8 17. hxg6 fxg6 18. g5 Nh5 19. Bxg7 Kxg7 20. Qd4+ Kg8 21. Rxh5 gxh5 22. Bh3 e5 23. dxe6 Rxf3 24. Qd5 Qf8 25. e7+ Qf7 26. Be6 1-0

[Event "Twente Young Master op-D"]
[Site "Twente"]
[Date "2007.08.08"]
[Round "7"]
[White "Bakker, Jouke"]
[Black "Van der Werff, Frank"]
[Result "1/2-1/2"]
[ECO "B70"]
[WhiteElo "1415"]
[BlackElo "1523"]
[PlyCount "154"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Bb5+ Bd7 7. Bxd7+ Nxd7 8. Be3 Ngf6 9. 0-0 0-0 10. Re1 Rc8 11. Qd2 Re8 12. Rad1 Ne5 13. b3 a6 14. h3 Qc7 15. Nce2 Nxe4 16. Qc1 Qa5 17. a4 Nd7 18. Nf3 Ndc5 19. Qb1 Qc7 20. Bd4 e5 21. Bb2 Ne6 22. c4 N6c5 23. Ba3 Nf6 24. Nc3 Red8 25. Nd5 Nxd5 26. Rxd5 f5 27. Bxc5 dxc5 28. Red1 Rxd5 29. Rxd5 e4 30. Ne1 Bd4 31. b4 b6 32. Nc2 Rd8 33. bxc5 Bxc5 34. Nb4 a5 35. Rxd8+ Qxd8 36. Nd5 g5 37. Qb5 Kf7 38. Qc6 f4 39. Qh6 Kg8 40. Qe6+ Kg7 41. Qxe4 Qd6 42. Qf5 h6 43. Qg4 Kg6 44. h4 Qe5 45. h5+ Kh7 46. Qd7+ Kh8 47. Qd8+ Kg7 48. Qd7+ Kh8 49. Qc8+ Kh7 50. Qd7+ Kh8 51. Qd8+ Kg7 52. Qd7+ Kh8 53. Qf7 Qg7 54. Qe8+ Qg8 55. Qe5+ Qg7 56. Qb8+ Kh7 57. Qc7 Qxc7 58. Nxc7 Kg7 59. Kf1 Kf6 60. f3 Ke5 61. Nb5 Kf5 62. Ke2 g4 63. Nc7 g3 64. Nd5 Kg5 65. Kd3 Kf5 66. Kd2 Ke5 67. Kc3 Kf5 68. Kd2 Ke5 69. Kd3 Bf2 70. Ne7 Bc5 71. Ng6+ Kf5 72. Ke2 Bd6 73. Nh8 Bc5 74. Ng6 Be3 75. Ne7+ Kg5 76. Nd5 Bc5 77. Kd3 Kf5 1/2-1/2

[Event "Twente Young Master op-D"]
[Site "Twente"]
[Date "2007.08.08"]
[Round "5"]
[White "Lentjes, Noud"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1697"]
[BlackElo "1523"]
[PlyCount "51"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Nc3 Nf6 7. Be2 0-0 8. Be3 Nc6 9. 0-0 a6 10. Rc1 Bd7 11. Kh1 Rc8 12. b3 Ne8 13. Qd2 Nc7 14. Nc2 f5 15. f3 Kh8 16. Bh6 Be6 17. Bxg7+ Kxg7 18. Nd5 fxe4 19. fxe4 Bxd5 20. cxd5 Ne5 21. Nd4 Rxf1+ 22. Bxf1 Kg8 23. Qc2 Ng4 24. Be2 Nf6 25. Ne6 Nfe8 26. Nxd8 1-0

[Event "Twente Young Master op-D"]
[Site "Twente"]
[Date "2007.08.08"]
[Round "6"]
[White "Van der Werff, Frank"]
[Black "Bokern, Peter"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1523"]
[BlackElo "1017"]
[PlyCount "39"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 5. Bb5 Nf6 6. d3 Bg7 7. 0-0 a6 8. Bxc6+ bxc6 9. Qe1 e5 10. fxe5 dxe5 11. Be3 c4 12. Nxe5 0-0 13. Nxc4 Ng4 14. Bf4 Re8 15. h3 Ne5 16. Nxe5 Qd4+ 17. Kh1 Bxe5 18. Bxe5 Qxe5 19. Qf2 Re7 20. d4 1-0

[Event "Twente Young Master op-D"]
[Site "Twente"]
[Date "2007.08.06"]
[Round "1"]
[White "Van der Werff, Frank"]
[Black "Langezaal, Arnold"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1523"]
[BlackElo "1074"]
[PlyCount "89"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 d6 4. dxe5 Qe7 5. Nc3 dxe5 6. Bb5 Bd7 7. Nd5 Qd6 8. 0-0 a6 9. Ba4 Nf6 10. Qe2 Nxd5 11. exd5 Qxd5 12. Rd1 Qe6 13. Bxc6 Bxc6 14. Qxe5 Bxf3 15. Qxe6+ fxe6 16. gxf3 Bc5 17. Be3 Be7 18. Re1 Bf6 19. Bf4 Bxb2 20. Rab1 0-0 21. Bxc7 Rac8 22. Bd6 Rfd8 23. Rxb2 Rxd6 24. Kf1 b5 25. Ke2 Rdc6 26. Kd2 Rd6+ 27. Kc1 Rc3 28. Re3 Rc4 29. Re4 Rcd4 30. Rb3 Rd2 31. Rbe3 Rxf2 32. Rxe6 Rxe6 33. Rxe6 Rxf3 34. Rxa6 Rf2 35. Rb6 Rxh2 36. Rxb5 h5 37. a4 h4 38. a5 Rh3 39. Kb2 Re3 40. a6 Re8 41. a7 h3 42. Rb8 Kh7 43. Rxe8 h2 44. a8Q Kh6 45. Qh1 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2007.05.19"]
[Round "8"]
[White "Ng, Wesley"]
[Black "Van der Werff, Frank"]
[Result "1/2-1/2"]
[ECO "B73"]
[WhiteElo "1399"]
[BlackElo "1515"]
[PlyCount "143"]
[EventDate "2007.05.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 Nc6 8. 0-0 0-0 9. Qd2 Bd7 10. Nb3 Rc8 11. Bh6 Ne5 12. Bxg7 Kxg7 13. Qe3 a6 14. Rfd1 Nc4 15. Bxc4 Rxc4 16. Rd4 Rc8 17. Rc1 Ng4 18. Qe2 Ne5 19. Kh1 Nc6 20. Rd3 Na7 21. Rg3 Nb5 22. Nxb5 Bxb5 23. Qe3 Re8 24. Rh3 Rh8 25. Qh6+ Kg8 26. c3 Bd7 27. Rf3 Be6 28. h3 Bxb3 29. axb3 Qf8 30. Qd2 Kg7 31. Ra1 Qe8 32. Qd5 Rc6 33. Kg1 Rf8 34. Qd4+ f6 35. Rg3 Qf7 36. Ra3 Rd8 37. h4 e5 38. Qd5 Qxd5 39. exd5 Rc5 40. c4 Rdc8 41. Rc3 f5 42. Ra1 Kf6 43. f3 R8c7 44. Kf2 Ke7 45. Ke2 b5 46. Rxa6 bxc4 47. bxc4 Rxc4 48. Rxc4 Rxc4 49. Ra7+ Kf6 50. Rxh7 Rc2+ 51. Kf1 Rxb2 52. Rd7 Rb6 53. Kg1 f4 54. Kh2 g5 55. hxg5+ Kxg5 56. Rc7 Rb5 57. g3 fxg3+ 58. Kxg3 Rxd5 59. Rd7 Rd3 60. Kf2 Kf6 61. Ke2 Rd5 62. Rh7 Rd4 63. Ke3 Ke6 64. Rh6+ Kd5 65. Rh1 Ra4 66. Rd1+ Ke6 67. Re1 d5 68. Kd3 Ra3+ 69. Ke2 d4 70. Rf1 Kd5 71. Kd2 Kc4 72. Rc1+ 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2007.05.19"]
[Round "7"]
[White "Van der Werff, Frank"]
[Black "Beukema, Stefan"]
[Result "0-1"]
[ECO "C63"]
[WhiteElo "1515"]
[BlackElo "1814"]
[PlyCount "40"]
[EventDate "2007.05.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 d6 5. h3 Be7 6. c3 fxe4 7. dxe4 Nf6 8. Qe2 0-0 9. 0-0 Qe8 10. Re1 Nh5 11. Ng5 Bxg5 12. Bxg5 Qg6 13. Qe3 Nf4 14. Bxf4 exf4 15. Qd3 Ne5 16. Qd5+ Be6 17. Qd1 Bxh3 18. Bf1 Bxg2 19. Bxg2 f3 20. Re3 Qxg2# 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2007.05.19"]
[Round "9"]
[White "Van der Werff, Frank"]
[Black "Kustura, Admira"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1515"]
[BlackElo "1535"]
[PlyCount "75"]
[EventDate "2007.05.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Bd3 dxe4 4. Bxe4 Nf6 5. Bf3 e6 6. Ne2 Be7 7. 0-0 0-0 8. Bf4 Qb6 9. Qc1 c5 10. c3 Bd7 11. Nd2 Bd6 12. Bxd6 Qxd6 13. Bxb7 Bc6 14. Bxa8 Bxa8 15. dxc5 Qxc5 16. Nb3 Qc6 17. f3 Qb6+ 18. Kh1 Nd5 19. Ng3 Nc6 20. Re1 Rd8 21. Qg5 h6 22. Qc1 Qc7 23. Ne2 Ne5 24. Rd1 Rc8 25. Nf4 Nb6 26. Nd2 Qc6 27. Rf1 Rd8 28. Nb3 Nbc4 29. Nd4 Qb7 30. b3 Nd6 31. Re1 Nd7 32. Nd3 Rc8 33. c4 Ne8 34. Ne5 Nxe5 35. Rxe5 Qb6 36. Nb5 Nf6 37. Re1 Nh7 38. Qf4 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2007.05.18"]
[Round "6"]
[White "Pries, Joris"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1387"]
[BlackElo "1515"]
[PlyCount "66"]
[EventDate "2007.05.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 e6 5. c4 Nb4 6. a3 N4c6 7. Nf3 Nxd4 8. Nxd4 cxd4 9. Qxd4 Nc6 10. Qc3 d6 11. f4 dxe5 12. fxe5 Qd4 13. Qxd4 Nxd4 14. Bd3 Nb3 15. 0-0 Nxa1 16. Nd2 Bc5+ 17. Kh1 Be3 18. b4 Bxd2 19. Bxd2 Nb3 20. Bc3 a5 21. Bc2 a4 22. Rb1 0-0 23. h3 Bd7 24. Rf1 Rac8 25. c5 b6 26. Rf4 Rfd8 27. Rc4 bxc5 28. bxc5 Nxc5 29. Bb4 Nb3 30. Bxb3 axb3 31. Rd4 Bc6 32. Bd6 Bd5 33. Rd2 Rc2 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2007.05.18"]
[Round "4"]
[White "Van Meegen, Ruud"]
[Black "Van der Werff, Frank"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "1489"]
[BlackElo "1515"]
[PlyCount "64"]
[EventDate "2007.05.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. h4 h5 13. Bh6 Nc4 14. Bxc4 Rxc4 15. Bxg7 Kxg7 16. Qd3 Rc8 17. Nde2 Qa5 18. a3 b5 19. Nd5 Nxd5 20. Qxd5 Be6 21. Qd2 Qa6 22. Rhg1 b4 23. Nd4 bxa3 24. Nxe6+ fxe6 25. Qd4+ e5 26. Qb4 a2 27. Kd2 Rc4 28. Qa3 Qb6 29. Rgf1 Rfc8 30. Rc1 Qd4+ 31. Qd3 Qxb2 32. Qb3 Qxb3 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2007.05.18"]
[Round "5"]
[White "Van der Werff, Frank"]
[Black "Van Overdam, Julian"]
[Result "0-1"]
[ECO "B73"]
[WhiteElo "1515"]
[BlackElo "1876"]
[PlyCount "56"]
[EventDate "2007.05.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 0-0 8. 0-0 d6 9. Kh1 Bd7 10. Nb3 a6 11. a4 Na5 12. Nd2 Rc8 13. Bf3 Be6 14. Re1 Nd7 15. Ndb1 Nc4 16. Bc1 Qb6 17. b3 Na5 18. Re3 Bd4 19. Rd3 Bxf2 20. Nd5 Bxd5 21. exd5 Ne5 22. Rd2 Be3 23. Re2 Bxc1 24. Qxc1 Nxb3 25. Qb2 Qd4 26. Qxd4 Nxd4 27. Rf2 Nexf3 28. gxf3 Rxc2 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2007.05.17"]
[Round "2"]
[White "Van Overdam, Jan"]
[Black "Van der Werff, Frank"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1683"]
[BlackElo "1515"]
[PlyCount "104"]
[EventDate "2007.05.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 e6 4. Nf3 Be7 5. Bb5+ Nc6 6. d3 Nf6 7. 0-0 0-0 8. Qe1 a6 9. Bxc6 bxc6 10. h3 Ne8 11. Qf2 d5 12. e5 f6 13. Na4 d4 14. b3 Rb8 15. Ba3 Rb5 16. Nb2 Nc7 17. Nc4 Nd5 18. Qd2 Bd7 19. Bb2 Be8 20. a4 Rb8 21. Ba3 Kh8 22. Rae1 f5 23. Bb2 Kg8 24. Rb1 Nb4 25. Rfd1 Bh5 26. Rf1 Be8 27. Kh1 Kh8 28. Nh2 Qd5 29. Nf3 Qd8 30. Rbd1 Nd5 31. Rb1 Nb4 32. Ng5 Qd5 33. Rbd1 h6 34. Nf3 Na2 35. Ba3 Qd7 36. Bb2 Bf7 37. Ra1 Nb4 38. Rfd1 Rfd8 39. a5 Bh5 40. Nb6 Qc7 41. Rg1 Bf7 42. g3 Nd5 43. Nxd5 cxd5 44. g4 g6 45. Qf2 Rg8 46. gxf5 gxf5 47. Nh2 Qd8 48. Rxg8+ Qxg8 49. Rg1 Qh7 50. Nf3 Rg8 51. Ba3 Rxg1+ 52. Qxg1 Qg7 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2007.05.17"]
[Round "3"]
[White "Van der Werff, Frank"]
[Black "Ocelik, Vaclav"]
[Result "1/2-1/2"]
[ECO "C91"]
[WhiteElo "1515"]
[BlackElo "1592"]
[PlyCount "28"]
[EventDate "2007.05.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. d4 Bb7 10. Bc2 Re8 11. Nbd2 Bf8 12. Nf1 Na5 13. Ng3 Nc4 14. b3 Nb6 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2007.05.17"]
[Round "1"]
[White "Van der Werff, Frank"]
[Black "Van Driel, Dennis"]
[Result "1-0"]
[ECO "C66"]
[WhiteElo "1515"]
[BlackElo "1216"]
[PlyCount "53"]
[EventDate "2007.05.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 d6 5. Re1 Bd7 6. d4 Nxd4 7. Bxd7+ Qxd7 8. Nxd4 exd4 9. Qxd4 Be7 10. Nc3 0-0 11. Kh1 h6 12. f4 Rfe8 13. f5 b6 14. Re3 Ng4 15. Rg3 c5 16. Qd2 Bg5 17. Qe2 Bxc1 18. Rxc1 h5 19. Rf1 Re5 20. h3 Nf6 21. Qe3 Nh7 22. f6 g6 23. Qh6 Nxf6 24. Rxf6 Qe7 25. Rfxg6+ fxg6 26. Qxg6+ Kf8 27. Qg8# 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2006.05.27"]
[Round "9"]
[White "Duburg, Jamie"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1532"]
[BlackElo "1311"]
[PlyCount "69"]
[EventDate "2006.05.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Bc4 d6 3. c3 e6 4. d4 cxd4 5. cxd4 g6 6. Nf3 Bg7 7. Nc3 Ne7 8. 0-0 0-0 9. Be3 d5 10. exd5 Nxd5 11. Nxd5 exd5 12. Bb3 Be6 13. Re1 Re8 14. Qd2 Nc6 15. Bh6 Rc8 16. Bxg7 Kxg7 17. Ne5 Nxe5 18. Rxe5 a6 19. Rae1 b6 20. Bxd5 Bxd5 21. Rxe8 Qxe8 22. Rxe8 Rxe8 23. h3 Bxa2 24. d5 Rd8 25. d6 Be6 26. Qe2 b5 27. Kh2 Kg8 28. Qe5 Rd7 29. Kg3 Rd8 30. Kf4 Rf8 31. Qf6 h6 32. Qe7 Rc8 33. d7 Bxd7 34. Qxd7 Rc4+ 35. Ke3 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2006.05.27"]
[Round "7"]
[White "Ratsma, Midas"]
[Black "Van der Werff, Frank"]
[Result "1/2-1/2"]
[ECO "D55"]
[WhiteElo "1414"]
[BlackElo "1311"]
[PlyCount "49"]
[EventDate "2006.05.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 Nbd7 6. Qb3 dxc4 7. Bxc4 0-0 8. Nf3 b6 9. 0-0 Bb7 10. Nd2 Nb8 11. Rac1 Nc6 12. Qc2 Rc8 13. Bd3 Nb4 14. Qb1 Nxd3 15. Qxd3 Re8 16. Qc2 a5 17. Nb3 h6 18. Bh4 Nd5 19. Bxe7 Rxe7 20. Nxd5 Qxd5 21. f3 Ree8 22. e4 Qd7 23. Rcd1 Red8 24. Rfe1 Qe7 25. Qc4 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2006.05.27"]
[Round "8"]
[White "Van der Werff, Frank"]
[Black "Jansen, Sven"]
[Result "1-0"]
[ECO "E33"]
[WhiteElo "1311"]
[BlackElo "1572"]
[PlyCount "71"]
[EventDate "2006.05.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. e3 Bb4 5. Nf3 Nc6 6. Qc2 0-0 7. Bd3 h6 8. 0-0 Bd7 9. a3 Bxc3 10. Qxc3 Qe7 11. b4 Rfe8 12. c5 a6 13. Ne5 Rad8 14. f4 Kh8 15. Rf3 Kg8 16. Bd2 Na7 17. a4 Rb8 18. Be1 Nh7 19. Rh3 Rec8 20. Qc2 Nf8 21. Qf2 f5 22. Qg3 Kh7 23. Qf3 Qe8 24. g4 Ng6 25. g5 Nxe5 26. dxe5 Qg6 27. Kf1 Kg8 28. gxh6 Qg4 29. Qxg4 fxg4 30. h7+ Kh8 31. Rg3 Be8 32. Rxg4 Bf7 33. Ra2 g6 34. Bh4 Kxh7 35. Bf6 Nc6 36. Rh4+ 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2006.05.26"]
[Round "5"]
[White "Kollen, Zyon"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1697"]
[BlackElo "1311"]
[PlyCount "51"]
[EventDate "2006.05.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 d6 7. Nc3 Nf6 8. Be2 0-0 9. 0-0 e6 10. Qd2 d5 11. Nxc6 bxc6 12. cxd5 cxd5 13. e5 Nd7 14. f4 Nb6 15. Kh1 Bb7 16. Bc5 Re8 17. Bb5 Nd7 18. Bd6 Bf8 19. Bxf8 Rxf8 20. Bxd7 Qxd7 21. Qf2 Ba6 22. Rfd1 Bb7 23. Ne4 Qe7 24. Nf6+ Kg7 25. Qh4 h5 26. Nxh5+ 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2006.05.26"]
[Round "4"]
[White "Van der Werff, Frank"]
[Black "Kauffeld, Bastiaan"]
[Result "1/2-1/2"]
[ECO "D07"]
[WhiteElo "1311"]
[BlackElo "1342"]
[PlyCount "54"]
[EventDate "2006.05.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nc3 Ne7 4. e3 g6 5. Nf3 Bg7 6. Be2 Nbc6 7. 0-0 0-0 8. b3 Nf5 9. Qc2 Nb4 10. Qd1 c5 11. Ba3 a5 12. Bb2 cxd4 13. Nxd4 Nxd4 14. exd4 Re8 15. cxd5 exd5 16. a3 Nc6 17. Bb5 Re7 18. Na4 Qc7 19. Rc1 Re4 20. Bxc6 bxc6 21. Nc5 Rh4 22. g3 Rh6 23. Re1 Bb7 24. Re3 Qc8 25. Qf1 Ba6 26. Qg2 Bb5 27. Rce1 Bf8 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2006.05.26"]
[Round "6"]
[White "Van der Werff, Frank"]
[Black "Reitsma, Bram"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1311"]
[BlackElo "1322"]
[PlyCount "85"]
[EventDate "2006.05.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. e3 b6 5. Nf3 c5 6. b3 dxc4 7. Bxc4 Bb7 8. Bb5+ Nbd7 9. 0-0 Be7 10. dxc5 Bxc5 11. Ne5 Rc8 12. Na4 Rc7 13. Nxc5 Rxc5 14. Bxd7+ Nxd7 15. Nxd7 Rd5 16. Qe2 Qxd7 17. Ba3 Rg5 18. f3 Bc6 19. Rfd1 Qb7 20. Qd2 Rd5 21. Qb4 Rc5 22. Qg4 0-0 23. Bxc5 bxc5 24. Rac1 Qb6 25. Qc4 Qa5 26. Qxc5 Qxc5 27. Rxc5 Bd5 28. e4 Bb7 29. Rc7 Rb8 30. Rdd7 Ba6 31. Rxa7 Be2 32. Rxf7 Rc8 33. Rfc7 Rd8 34. Rxg7+ Kf8 35. Rxh7 Kg8 36. Rhe7 e5 37. Rxe5 Kf8 38. Rc5 Kg8 39. Kf2 Bd3 40. Rd5 Re8 41. Rxd3 Rf8 42. Rdd7 Rc8 43. e5 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2006.05.25"]
[Round "1"]
[White "Huang, Jeffrey"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "1571"]
[BlackElo "1311"]
[PlyCount "75"]
[EventDate "2006.05.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Qf3 Bd7 9. Be2 h6 10. Ne4 Be7 11. Nbc3 Qc8 12. 0-0 Bg4 13. Nxf6+ Bxf6 14. Qxg4 0-0 15. Ne4 Be7 16. Qxc8 Raxc8 17. c3 f5 18. Ng3 g5 19. Ba6 Rcd8 20. b4 h5 21. bxa5 h4 22. Ne2 g4 23. g3 h3 24. f4 Bc5+ 25. d4 exd4 26. cxd4 Bxd4+ 27. Nxd4 Rxd4 28. Be3 Re4 29. Bc5 Rd8 30. Rfd1 Rb8 31. Bd3 Ree8 32. Rab1 Ra8 33. Bxf5 Re2 34. Bxg4 Rg2+ 35. Kh1 Re8 36. Bxh3 Rc2 37. Bg1 Ree2 38. Bg4 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2006.05.25"]
[Round "3"]
[White "Sekandar, Kambiz"]
[Black "Van der Werff, Frank"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1452"]
[BlackElo "1311"]
[PlyCount "103"]
[EventDate "2006.05.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bc5 6. Be3 Nxd4 7. Bxd4 Bxd4 8. Qxd4 d6 9. Bc4 Be6 10. 0-0-0 Qe7 11. Rhe1 Bxc4 12. Qxc4 0-0-0 13. Rd2 Qd7 14. Red1 Qe6 15. Qe2 Rhe8 16. f3 h6 17. Nd5 Nxd5 18. Rxd5 c6 19. Qc4 Kb8 20. R5d4 Qxc4 21. Rxc4 Re7 22. Rcd4 Red7 23. f4 f6 24. e5 fxe5 25. fxe5 d5 26. Re1 Re7 27. c4 Kc7 28. Kc2 dxc4 29. Rxc4 Rd5 30. Rce4 Kd7 31. Kc3 Ke6 32. Rd4 Rxe5 33. Rf1 Rc5+ 34. Kb3 Rd7 35. Re1+ Kf5 36. Rxd7 b5 37. Rxa7 Rc4 38. Rxg7 c5 39. Rb7 Rb4+ 40. Kc3 Rc4+ 41. Kd3 Rd4+ 42. Ke3 Re4+ 43. Kf2 Rb4 44. b3 Kf4 45. Re3 Rd4 46. Rxb5 Rd2+ 47. Re2 Rd5 48. b4 Rd8 49. Rxc5 Rf8 50. g3+ Kg4+ 51. Kg2 Rd8 52. h3# 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2006.05.25"]
[Round "2"]
[White "Van der Werff, Frank"]
[Black "Van der Poel, Jan Marco"]
[Result "1/2-1/2"]
[ECO "D40"]
[WhiteElo "1311"]
[BlackElo "1458"]
[PlyCount "143"]
[EventDate "2006.05.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. e3 c5 4. Nc3 Nc6 5. Nf3 Nf6 6. Be2 Be7 7. 0-0 0-0 8. b3 cxd4 9. Nxd4 Qc7 10. cxd5 exd5 11. Bf3 Re8 12. Ndb5 Qd7 13. Bb2 a6 14. Nd4 Nxd4 15. Qxd4 b5 16. Rfd1 Bb7 17. Rac1 Rac8 18. Ne2 Rxc1 19. Rxc1 Rc8 20. h3 Rxc1+ 21. Nxc1 Bd6 22. Bg4 Qc7 23. Bf3 Be7 24. Ne2 Bd6 25. Kh1 Qa5 26. Nf4 Qxa2 27. g3 Qa5 28. Bxd5 Bxd5+ 29. Nxd5 Ne8 30. Qg4 Qd8 31. Nf4 Bxf4 32. Qxf4 Qd6 33. Qxd6 Nxd6 34. f3 f6 35. Bc3 Nf5 36. e4 Nxg3+ 37. Kg2 Ne2 38. Bb2 Nf4+ 39. Kg3 Nd3 40. Bc3 Nc5 41. b4 Ne6 42. f4 Kf7 43. Kg4 g6 44. Kf3 g5 45. f5 Nf4 46. Kg4 h6 47. Bd2 Nd3 48. Kh5 Kg7 49. h4 Nf2 50. e5 fxe5 51. hxg5 hxg5 52. Bxg5 Nd3 53. Bd2 Kf6 54. Kg4 Nf2+ 55. Kf3 Nd3 56. Kg4 Kf7 57. Kg5 e4 58. Kg4 e3 59. Bxe3 Nxb4 60. Bd2 Nd5 61. Kf3 Ke7 62. Ke4 Nf6+ 63. Ke5 Nd7+ 64. Kd5 Nb8 65. Ke5 Nc6+ 66. Kd5 Nb8 67. Ke5 Nc6+ 68. Kd5 Kd7 69. f6 Nd8 70. Ke5 Kc6 71. Ba5 Nf7+ 72. Kd4 1/2-1/2

