[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.12"]
[Round "9"]
[White "Wisgerhof, Jan Willem"]
[Black "Guijt, Frank"]
[Result "1-0"]
[ECO "C62"]
[PlyCount "71"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 d6 4. Bb5 Bd7 5. d3 a6 6. Bxc6 Bxc6 7. d4 exd4 8. Qxd4 Qf6 9. Qd3 0-0-0 10. Bg5 Qe6 11. Bxd8 Kxd8 12. 0-0 Kc8 13. Rad1 Nf6 14. e5 Ng4 15. Rfe1 Be7 16. exd6 Qxd6 17. Qxd6 Bxd6 18. h3 Nf6 19. Ng5 Bb4 20. Nxf7 Rf8 21. Ng5 h6 22. Nf3 Nh5 23. Rd2 b6 24. Rd3 g5 25. Ne5 Ba8 26. Ng6 Rf6 27. Ne7+ Bxe7 28. Rxe7 Nf4 29. Rg3 Re6 30. Rxe6 Nxe6 31. Re3 Nd4 32. Re8+ Kb7 33. Rh8 Nxc2 34. Rxh6 Nd4 35. b3 c5 36. Rg6 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.11"]
[Round "8"]
[White "Van Helvert, Vincent"]
[Black "Wisgerhof, Jan Willem"]
[Result "1/2-1/2"]
[ECO "C65"]
[PlyCount "76"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 d6 5. d3 Bd7 6. Be3 a6 7. Bxc6 Bxc6 8. d4 exd4 9. Qxd4 Qe7 10. Bg5 Rd8 11. Bxf6 gxf6 12. 0-0 Bg7 13. Rae1 Kf8 14. Nd5 Bxd5 15. Qxd5 c6 16. Qa5 h5 17. Rd1 Rd7 18. Rfe1 c5 19. b4 cxb4 20. Qxb4 Bh6 21. Qa4 Kg7 22. e5 Rdd8 23. exd6 Qd7 24. Qxd7 Rxd7 25. Re7 Rhd8 26. Rxd7 Rxd7 27. Nh4 Bf4 28. g3 Be5 29. Nf5+ Kg6 30. Ne7+ Kg5 31. f4+ Bxf4 32. gxf4+ Kxf4 33. Rf1+ Ke5 34. Nc8 Rd8 35. Re1+ Kd5 36. Nb6+ Kxd6 37. Nc4+ Kc5 38. Nb2 Kb4 1/2-1/2

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.11"]
[Round "7"]
[White "Wisgerhof, Jan Willem"]
[Black "Prince, Jip"]
[Result "0-1"]
[ECO "C55"]
[PlyCount "96"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Bc5 5. Ng5 0-0 6. Bxf7+ Rxf7 7. Nxf7 Kxf7 8. d3 d6 9. Bg5 h6 10. Bxf6 Qxf6 11. Qf3 Qxf3 12. gxf3 Nd4 13. 0-0-0 Nxf3 14. h3 c6 15. Ne2 Be6 16. Kb1 b5 17. c3 a5 18. d4 Bb6 19. h4 b4 20. d5 cxd5 21. exd5 Bf5+ 22. Ka1 Kg8 23. Ng3 Bh7 24. Ne2 bxc3 25. Nxc3 Bd4 26. Rh3 Bf5 27. Rxf3 Bg4 28. Rdd3 Bxf3 29. Rxf3 Rc8 30. Kb1 Bxc3 31. bxc3 Rf8 32. Rxf8+ Kxf8 33. Kb2 Ke7 34. Ka3 Kd7 35. Ka4 Kc7 36. Kxa5 Kb7 37. Kb5 g5 38. hxg5 hxg5 39. a4 g4 40. a5 e4 41. a6+ Ka7 42. Kc6 e3 43. fxe3 g3 44. Kxd6 g2 45. Kc7 g1Q 46. d6 Qxe3 47. d7 Qb6+ 48. Kc8 Qb8# 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.10"]
[Round "6"]
[White "Groenewolt, Jessica"]
[Black "Wisgerhof, Jan Willem"]
[Result "0-1"]
[ECO "C63"]
[PlyCount "66"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 f6 4. dxe5 fxe5 5. Nc3 Nf6 6. Bb5 d6 7. Bg5 Be7 8. Bxf6 Bxf6 9. Qe2 Bd7 10. 0-0-0 0-0 11. h4 Bg4 12. g3 Nd4 13. Qc4+ Kh8 14. Nxd4 exd4 15. Ne2 Be5 16. f4 Bf6 17. Rde1 a6 18. Ba4 b5 19. Qb4 c5 20. Qd2 bxa4 21. f5 Bxe2 22. Qxe2 Qb6 23. h5 Bg5+ 24. Kb1 a3 25. b3 a5 26. g4 Qb4 27. Qd3 Bd2 28. Reg1 Qc3 29. Qxc3 dxc3 30. Ka1 Bg5 31. Re1 Rfe8 32. Rh3 Kg8 33. Rxc3 Bd2 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.09"]
[Round "4"]
[White "Van der Lest, Menno"]
[Black "Wisgerhof, Jan Willem"]
[Result "1-0"]
[ECO "C87"]
[PlyCount "45"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Nf6 5. Re1 Bg4 6. h3 Bh5 7. c3 a6 8. Ba4 Be7 9. d3 d5 10. g4 Bg6 11. Nxe5 Qd6 12. Bf4 b5 13. Nxg6 Qe6 14. exd5 Qxd5 15. Bb3 Qd7 16. Nxh8 Nd5 17. Qf3 Nxf4 18. Qxf4 f6 19. Qe4 Rc8 20. Be6 Qd8 21. Qxc6+ Kf8 22. Bxc8 Qxc8 23. Re6 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.09"]
[Round "5"]
[White "Wisgerhof, Jan Willem"]
[Black "Porte, Rinze"]
[Result "0-1"]
[ECO "C46"]
[PlyCount "104"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Bc4 d6 5. d3 Bg4 6. h3 Bh5 7. Bd2 Nf6 8. g4 Bg6 9. Nd5 Bxd2+ 10. Qxd2 h5 11. g5 Nh7 12. h4 f6 13. 0-0-0 Nd4 14. Nxd4 exd4 15. Rhg1 Bf7 16. f4 Bg8 17. f5 c6 18. g6 Nf8 19. Nf4 b5 20. Bxg8 Rxg8 21. Nxh5 a5 22. Nf4 b4 23. b3 Qb6 24. Kb2 a4 25. Ra1 Qc5 26. Ne2 Nd7 27. Rgb1 Rh8 28. Rh1 Ne5 29. h5 Ng4 30. Nf4 Qb6 31. Ne6 Rg8 32. Qf4 Ne5 33. h6 Rh8 34. hxg7 a3+ 35. Kc1 Rxh1+ 36. Kd2 Nf3+ 37. Qxf3 Rh2+ 38. Ke1 Ke7 39. Kd1 Qb8 40. Nxd4 Qg8 41. Nxc6+ Kd7 42. Nxb4 Qxg7 43. Rc1 Qh6 44. Qe2 Rxe2 45. Kxe2 Qxc1 46. Nd5 Qxc2+ 47. Ke3 Qxa2 48. g7 Qxb3 49. Nxf6+ Kc6 50. Nd5 a2 51. Ne7+ Kd7 52. Nd5 a1Q 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.08"]
[Round "2"]
[White "Den Haan, Robert Jan"]
[Black "Wisgerhof, Jan Willem"]
[Result "0-1"]
[ECO "C30"]
[PlyCount "58"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d6 4. Nf3 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. fxe5 dxe5 8. Nxe5 Bxe4 9. Qe2 Qd4 10. Nf3 Qb4 11. d3 0-0-0 12. dxe4 Re8 13. a3 Qa5 14. 0-0 Bc5+ 15. Kh1 Qb6 16. Na4 Qc6 17. Nxc5 Qxc5 18. Re1 Rxe4 19. Qxe4 Nxe4 20. Rxe4 Qxc2 21. Rf4 Qd1+ 22. Ng1 f6 23. Rf2 Rd8 24. h3 Qe1 25. Rc2 c6 26. Kh2 Rd1 27. Nf3 Qe4 28. Ra2 Qxc2 29. Bf4 Qb1 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.08"]
[Round "3"]
[White "Wisgerhof, Jan Willem"]
[Black "Stuijts, Marielle"]
[Result "0-1"]
[ECO "C48"]
[PlyCount "66"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 d6 5. Bxc6+ bxc6 6. d4 exd4 7. Qxd4 c5 8. Qd1 Bb7 9. Qd3 Qe7 10. Bg5 Bxe4 11. Nxe4 Qxe4+ 12. Qxe4+ Nxe4 13. 0-0 d5 14. Rfe1 Bd6 15. Rad1 f5 16. Rxd5 0-0 17. Be3 Rad8 18. Nh4 Bxh2+ 19. Kxh2 Rxd5 20. c4 Rdd8 21. Nf3 f4 22. Bc1 Nxf2 23. Ng5 Nd3 24. Rd1 Rfe8 25. b3 Nxc1 26. Rxc1 Rd2 27. Rf1 Ree2 28. Rg1 Rxa2 29. Nf3 h6 30. Nh4 g5 31. Nf3 Re3 32. Kh1 Rxb3 33. Rd1 Rbb2 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.07"]
[Round "1"]
[White "Wisgerhof, Jan Willem"]
[Black "Rietveld, Renze"]
[Result "0-1"]
[ECO "C18"]
[PlyCount "116"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Bg5 Nbc6 8. Bb5 0-0 9. Qg4 Qa5 10. Bxc6 Qxc3+ 11. Ke2 Qxc2+ 12. Kf1 Qd3+ 13. Ne2 Nxc6 14. dxc5 Nxe5 15. Qg3 Qxg3 16. Nxg3 h6 17. Be7 Re8 18. Bd6 Nc4 19. Bf4 e5 20. Bc1 Bd7 21. Ke2 Rac8 22. Rd1 Bb5 23. Ke1 Rxc5 24. Be3 Nxe3 25. fxe3 e4 26. Rab1 Bc6 27. Nf5 Re6 28. Nd4 Rf6 29. Ke2 a6 30. Rf1 Rxf1 31. Kxf1 Rc3 32. Rb3 Rxb3 33. Nxb3 Bb5+ 34. Kf2 Bc4 35. Nc5 b6 36. Nd7 b5 37. Nb6 Kf8 38. Ke1 Ke7 39. Kd2 Kd8 40. Kc3 Kc7 41. Nxc4 bxc4 42. Kd4 Kd6 43. g3 f6 44. h3 a5 45. a4 h5 46. g4 hxg4 47. hxg4 g5 48. Kc3 Kc5 49. Kc2 Kb4 50. Kb2 Kxa4 51. Kc3 Ka3 52. Kc2 Kb4 53. Kb2 a4 54. Ka2 c3 55. Kb1 Kc4 56. Kc2 a3 57. Kb1 Kd3 58. Ka2 c2 0-1

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.14"]
[Round "9"]
[White "Wisgerhof, Jan Willem"]
[Black "Snijdewint, Jeroen"]
[Result "0-1"]
[ECO "C65"]
[PlyCount "74"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. Nc3 Bg4 5. d3 Nf6 6. Bg5 Be7 7. h3 Bh5 8. h4 h6 9. Bxf6 Bxf6 10. g3 0-0 11. Qe2 Nd4 12. Qe3 Nxc2+ 13. Kd2 Nxe3 14. Kxe3 Bxf3 15. Kxf3 c6 16. Bc4 b5 17. Bb3 b4 18. Nd1 d5 19. Rc1 Rc8 20. Ne3 g5 21. h5 dxe4+ 22. dxe4 Qb6 23. Nf5 Kh7 24. Nd6 Rcd8 25. Nc4 Rd3+ 26. Kg2 Qc5 27. Ne3 Qb6 28. Nc4 Qc7 29. Rhe1 g4 30. Ne3 Bg5 31. Rc2 Bxe3 32. Rxe3 Rxe3 33. fxe3 f5 34. Rf2 f4 35. exf4 exf4 36. gxf4 Rxf4 37. Rxf4 Qxf4 0-1

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.13"]
[Round "8"]
[White "Overduin, Derk"]
[Black "Wisgerhof, Jan Willem"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "98"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ Qxf6 6. d3 Qd8 7. Bf4 Nc6 8. Qd2 Qf6 9. 0-0-0 Ba3 10. c3 Bc5 11. Bg5 Qf5 12. d4 Bd6 13. Bd3 Qa5 14. a3 f6 15. Bf4 e5 16. dxe5 fxe5 17. Rhe1 Be6 18. Qe2 Bg4 19. h3 Bxf3 20. gxf3 0-0-0 21. Bg3 g6 22. f4 exf4 23. Qg4+ Kb8 24. Bxf4 Bxf4+ 25. Qxf4 Rhf8 26. Qh4 Qb6 27. Re2 Rh8 28. Kc2 Na5 29. b4 Nc6 30. Rde1 a6 31. Qf6 a5 32. b5 Na7 33. Qxh8 Rxh8 34. Re8+ Rxe8 35. Rxe8+ Nc8 36. Rf8 c6 37. Bc4 cxb5 38. Be2 Qc6 39. Bg4 Qe4+ 40. Kd2 Ka7 41. Bxc8 b4 42. f3 Qe7 43. Rh8 bxc3+ 44. Kc2 Qxa3 45. Rxh7 Qb2+ 46. Kd3 Qd2+ 47. Kc4 Qf4+ 48. Kxc3 Qxf3+ 49. Kc4 Qc6+ 0-1

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.13"]
[Round "7"]
[White "Wisgerhof, Jan Willem"]
[Black "Leenman, Dennis"]
[Result "0-1"]
[ECO "C46"]
[PlyCount "92"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Bc4 d6 5. d3 Bg4 6. Bd2 Qd7 7. h3 Bh5 8. Nd5 Bxd2+ 9. Qxd2 Bxf3 10. gxf3 Nd4 11. Qd1 Ne7 12. f4 Nxd5 13. Bxd5 c6 14. Bc4 exf4 15. c3 Ne6 16. Qg4 Rf8 17. Bxe6 fxe6 18. 0-0-0 0-0-0 19. d4 d5 20. e5 Qf7 21. Rhg1 Rg8 22. Rd3 g5 23. Qf3 Qf5 24. Rdd1 Rg6 25. Qh5 Rg7 26. h4 g4 27. Qxf5 exf5 28. f3 g3 29. Rg2 Rg6 30. Rh1 Rh6 31. h5 Rg8 32. Rh4 Rg5 33. Rxf4 Rhxh5 34. Kd2 Rh1 35. e6 Kd8 36. Ke2 h5 37. Rxg3 Rxg3 38. Rxf5 Rg7 39. f4 Ke7 40. Re5 Rg6 41. f5 Rf6 42. Kf3 Rf1+ 43. Kg3 R1xf5 44. Rxf5 Rxf5 45. Kh4 Kxe6 46. Kh3 Rf4 0-1

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.12"]
[Round "6"]
[White "Struik, Tjapko"]
[Black "Wisgerhof, Jan Willem"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "101"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 h6 5. d3 d6 6. Be3 Bg4 7. Nd5 Be6 8. Qd2 Qd7 9. Nxf6+ gxf6 10. Bb5 d5 11. c3 d4 12. cxd4 Bb4 13. Qxb4 Nxb4 14. Bxd7+ Bxd7 15. Ke2 exd4 16. Nxd4 0-0-0 17. a3 Nc6 18. Nb5 Kb8 19. Rhd1 f5 20. Bf4 Rc8 21. Rac1 Rhe8 22. f3 h5 23. Ke3 fxe4 24. dxe4 Be6 25. b4 f5 26. Nxc7 Rxc7 27. b5 Kc8 28. Bxc7 Kxc7 29. bxc6 bxc6 30. Rc5 fxe4 31. fxe4 Re7 32. Rdc1 Bd7 33. Rxh5 Rg7 34. g3 Re7 35. Rc3 Be8 36. Rhc5 Re6 37. e5 Bd7 38. h4 Rg6 39. Kd2 Kb6 40. a4 a5 41. R5c4 Be8 42. g4 Rh6 43. g5 Rg6 44. Rf4 c5 45. Rf6+ Rxf6 46. exf6 Kc6 47. Rd3 Bf7 48. Kc3 Bg6 49. Kd2 Bxd3 50. f7 c4 51. f8Q 1-0

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.11"]
[Round "4"]
[White "Visser, Frank"]
[Black "Wisgerhof, Jan Willem"]
[Result "0-1"]
[ECO "C55"]
[PlyCount "42"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 h6 5. d3 Bb4 6. Bd2 Bxc3 7. Bxc3 d6 8. b4 0-0 9. b5 Ne7 10. h3 Ng6 11. g3 Re8 12. Rg1 Bxh3 13. Nh4 Be6 14. Bxe6 Rxe6 15. Nxg6 fxg6 16. f4 Qc8 17. a4 c6 18. bxc6 Qxc6 19. Bd2 Qc5 20. Rg2 d5 21. Re2 Qg1# 0-1

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.11"]
[Round "5"]
[White "Wisgerhof, Jan Willem"]
[Black "Van Nies, Jessica"]
[Result "1-0"]
[ECO "E12"]
[PlyCount "73"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. Bg5 e6 4. Nc3 Be7 5. e3 b6 6. Nf3 Bb7 7. cxd5 exd5 8. Ne5 Nbd7 9. Qa4 0-0 10. Bxf6 Nxf6 11. Rc1 a6 12. b4 b5 13. Qb3 Qd6 14. a3 Bc6 15. Be2 Ne4 16. Nxe4 dxe4 17. Rxc6 Qd8 18. 0-0 Bf6 19. Rc5 Kh8 20. Nxf7+ Rxf7 21. Qxf7 Be7 22. Rd5 Bd6 23. f3 exf3 24. Bxf3 Qh4 25. Rxd6 cxd6 26. Bxa8 h6 27. Qf8+ Kh7 28. Qf5+ Kg8 29. Be4 Qf6 30. Qh7+ Kf7 31. Rxf6+ Kxf6 32. Qf5+ Ke7 33. Kf2 Ke8 34. Qe6+ Kf8 35. Qxd6+ Kg8 36. Qe7 Kh8 37. Qf8# 1-0

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.10"]
[Round "2"]
[White "Hemmer, Anne Fleur"]
[Black "Wisgerhof, Jan Willem"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "51"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nc6 5. Ne2 Nf6 6. Bf4 Bd6 7. Bxd6 Qxd6 8. c3 0-0 9. Qc2 Re8 10. f3 Bd7 11. Nd2 Re6 12. 0-0-0 Rae8 13. Ng3 g6 14. Rhf1 Qf4 15. Kb1 h5 16. Bxg6 fxg6 17. Qxg6+ Kf8 18. Nf5 R6e7 19. Qxf6+ Kg8 20. Nxe7+ Nxe7 21. Qxf4 Ng6 22. Qxc7 Bf5+ 23. Kc1 Nh4 24. Qg3+ Ng6 25. Rde1 Rxe1+ 26. Rxe1 1-0

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.10"]
[Round "3"]
[White "Wisgerhof, Jan Willem"]
[Black "Groen, Robbert"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "66"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 e6 2. e4 d5 3. e5 c5 4. c3 Nc6 5. Bb5 Bd7 6. Nf3 Nge7 7. Bg5 h6 8. Bh4 Qb6 9. Na3 a6 10. Bxc6 Bxc6 11. Qb3 Qxb3 12. axb3 Nf5 13. dxc5 Nxh4 14. Nxh4 Bxc5 15. c4 Bd4 16. Rb1 Bxe5 17. 0-0 0-0 18. Rfe1 Bf6 19. Nf3 dxc4 20. bxc4 Bxf3 21. gxf3 Rfd8 22. b3 Rab8 23. b4 b5 24. Kg2 bxc4 25. Nxc4 Bc3 26. Na5 Bxe1 27. Rxe1 Rb6 28. Re5 Rd5 29. Nc4 Rxb4 30. Rxd5 exd5 31. Ne5 a5 32. Nc6 Rb5 33. Ne7+ Kh7 0-1

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.09"]
[Round "1"]
[White "Wisgerhof, Jan Willem"]
[Black "Yaqoubi, Hasib"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "87"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Nf3 Bb4 4. d3 d6 5. d4 Bg4 6. dxe5 Bxf3 7. gxf3 Bxc3+ 8. bxc3 dxe5 9. Qxd8+ Kxd8 10. f4 Nc6 11. fxe5 Nxe5 12. Bd3 Kd7 13. f4 Nc6 14. Rg1 Rhg8 15. Rb1 b6 16. Bb5 Nxe4 17. Bb2 Rae8 18. Kd1 Nf2+ 19. Kc1 Nh3 20. Rd1+ Kc8 21. Bxc6 Rd8 22. Rxd8+ Rxd8 23. c4 f6 24. Ba3 Nxf4 25. Kb2 Rd2 26. Rg1 g6 27. h4 Rd4 28. Kb3 Nh5 29. Re1 f5 30. c3 Rd3 31. Kc2 Rd8 32. Be7 Rh8 33. c5 f4 34. a4 Rg8 35. Bg5 Rf8 36. Bh6 Rd8 37. Kb3 a5 38. Re7 Rh8 39. Kc4 Kd8 40. Bg5 Kc8 41. Kb5 Rf8 42. cxb6 cxb6 43. Kxb6 f3 44. Ra7 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Michielsen, Joost"]
[Black "Wisgerhof, Jan Willem"]
[Result "1-0"]
[ECO "B00"]
[PlyCount "43"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 d6 3. Nf3 Nf6 4. Nc3 Bg4 5. Be2 e5 6. Be3 Bxf3 7. Bxf3 Nb4 8. 0-0 exd4 9. Bxd4 d5 10. Bxf6 Qxf6 11. exd5 Bd6 12. Re1+ Kd8 13. a3 Na6 14. Qd2 Kd7 15. Bg4+ Kd8 16. Ne4 Qh4 17. Nxd6 cxd6 18. Bh3 Re8 19. Qa5+ Nc7 20. Rxe8+ Kxe8 21. Qxc7 Rd8 22. Re1+ 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Van de Put, Jeroen"]
[Black "Wisgerhof, Jan Willem"]
[Result "1-0"]
[ECO "B29"]
[PlyCount "31"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. d4 d6 5. dxc5 dxc5 6. Bc4 Nb4 7. Bxf7+ Kxf7 8. Qxd8 Nxc2+ 9. Kd1 Nxa1 10. Qxc8 g6 11. Ng5+ Kg8 12. Qe6+ Kg7 13. Qf7+ Kh6 14. Nxh7+ Kh5 15. Qf3+ Kh4 16. Bg5# 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Van der Sande, D."]
[Black "Wisgerhof, Jan Willem"]
[Result "0-1"]
[ECO "C57"]
[PlyCount "60"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. d3 Be6 7. Qf3 f6 8. Ne4 Nd4 9. Qd1 Qd7 10. 0-0 0-0-0 11. c3 Nf5 12. Nbd2 Nb6 13. Bxe6 Qxe6 14. Nb3 Qd5 15. d4 Qxe4 16. Re1 Qd5 17. Re2 exd4 18. Rd2 Nh4 19. Qg4+ Nf5 20. Rxd4 Qe5 21. Bf4 Qe6 22. Rd2 Rxd2 23. Nxd2 h5 24. Qg6 Rh6 25. Qxh6 gxh6 26. Nf3 Qe4 27. Re1 Qxf4 28. Re8+ Kd7 29. Rxf8 Qc1+ 30. Ne1 Qxe1# 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Van der Vurst, Arne"]
[Black "Wisgerhof, Jan Willem"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "57"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. d3 Be7 5. h3 Bf6 6. Nc3 Nge7 7. Be3 0-0 8. 0-0 Ng6 9. Qd2 Bh4 10. Bg5 Bxg5 11. Qxg5 Qxg5 12. Nxg5 Nd4 13. Rac1 Nf4 14. Rfe1 Be6 15. g3 Nxh3+ 16. Nxh3 Bxh3 17. Re3 Be6 18. Nb5 Nxb5 19. Bxb5 a6 20. Bc4 b5 21. Bd5 Bxd5 22. exd5 Rac8 23. c4 c6 24. cxb5 cxd5 25. bxa6 Rxc1+ 26. Kg2 Ra8 27. a3 Rxa6 28. d4 exd4 29. Re8# 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Wisgerhof, Jan Willem"]
[Black "De Zeeuw, S."]
[Result "1-0"]
[ECO "D01"]
[PlyCount "41"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 Nc6 4. Bxf6 exf6 5. g3 Bb4 6. Qd2 0-0 7. Bg2 Bxc3 8. Qxc3 Re8 9. e3 Bg4 10. Qb3 Be6 11. Qxb7 Nxd4 12. 0-0-0 Nf5 13. Bxd5 Ne7 14. Bxe6 Qxd1+ 15. Kxd1 Rab8 16. Bxf7+ Kxf7 17. Qxc7 Rec8 18. Qxa7 Rxb2 19. Qa4 Rb1+ 20. Kd2 Rd8+ 21. Ke2 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Wisgerhof, Jan Willem"]
[Black "Langerak, Wouter"]
[Result "0-1"]
[ECO "B30"]
[PlyCount "62"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bb5 Qc7 5. Bxc6 Qxc6 6. d3 d6 7. Bg5 Nd7 8. Nd5 e6 9. Nc3 Nb6 10. Qd2 e5 11. b3 f6 12. Be3 Be7 13. 0-0 g5 14. Qe2 h5 15. h4 Bg4 16. hxg5 fxg5 17. Rfd1 0-0-0 18. Rab1 Qd7 19. b4 Rdf8 20. Nd5 Nxd5 21. exd5 Bxf3 22. gxf3 Qh3 23. Rb3 Rxf3 24. Bc1 Rhf8 25. Be3 g4 26. bxc5 dxc5 27. Rc3 b6 28. d4 g3 29. dxc5 g2 30. cxb6+ Kb8 31. b7 Qh1# 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Wisgerhof, Jan Willem"]
[Black "Wohl, Rami"]
[Result "0-1"]
[ECO "A02"]
[PlyCount "46"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. f4 Nc6 2. Nf3 f6 3. g3 e5 4. f5 d5 5. Bh3 Bc5 6. e3 Nge7 7. d4 Bb4+ 8. c3 Ba5 9. dxe5 Nxf5 10. Bxf5 Bxf5 11. exf6 gxf6 12. 0-0 Bh3 13. Rf2 Qd6 14. Rd2 Ne7 15. e4 c6 16. b3 0-0-0 17. Ba3 Qe6 18. Bxe7 Qxe7 19. exd5 Rxd5 20. Rxd5 cxd5 21. Kf2 Bb6+ 22. Nd4 Re8 23. g4 Qe3# 0-1

