[Event "Den Bosch op"]
[Site "Den Bosch"]
[Date "1992.??.??"]
[Round "4"]
[White "Kleijberg, Ad"]
[Black "Van der Heijden, Harold"]
[Result "1-0"]
[ECO "A03"]
[PlyCount "55"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. f4 g6 2. Nf3 Bg7 3. g3 d5 4. Bg2 c5 5. 0-0 Nc6 6. d3 Nf6 7. Nc3 0-0 8. e4 dxe4 9. dxe4 Qxd1 10. Rxd1 Bg4 11. e5 Nd7 12. Be3 f6 13. h3 Be6 14. exf6 Bxf6 15. Ne4 Nb4 16. Neg5 Bf5 17. g4 Nxc2 18. gxf5 Nxa1 19. Rxd7 Rac8 20. Ne6 Rfe8 21. fxg6 hxg6 22. Ne5 Bxe5 23. fxe5 b6 24. Be4 c4 25. Rd1 c3 26. Rxa1 cxb2 27. Rb1 Rc3 28. Kf2 1-0

[Event "Den Bosch op"]
[Site "Den Bosch"]
[Date "1992.??.??"]
[Round "1"]
[White "Kuijf, Marinus"]
[Black "Van der Heijden, Harold"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "2440"]
[PlyCount "71"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c3 c5 3. dxc5 e5 4. b4 a5 5. Nf3 e4 6. Nd4 axb4 7. cxb4 b6 8. Nb5 bxc5 9. Bf4 Na6 10. bxc5 Bxc5 11. Nd6+ Bxd6 12. Qxd6 Qe7 13. Nc3 Nb4 14. Rb1 Nfd5 15. Nxd5 Qxd6 16. Bxd6 Nxd5 17. Rb5 Nf6 18. a3 Ra6 19. Re5+ Kd8 20. Be7+ Kc7 21. e3 d6 22. Bxa6 dxe5 23. Bc4 Be6 24. Bxe6 fxe6 25. Ke2 Nd5 26. Rc1+ Kd7 27. Bb4 Rb8 28. Rc4 Nxb4 29. Rxb4 Ra8 30. a4 Kc6 31. Rxe4 Kd5 32. Rb4 Ra7 33. f3 Kd6 34. Kd3 Rc7 35. a5 Rc5 36. Rb6+ 1-0

[Event "Den Bosch op"]
[Site "Den Bosch"]
[Date "1992.??.??"]
[Round "3"]
[White "Van der Cruysen, Geert"]
[Black "Van der Heijden, Harold"]
[Result "0-1"]
[ECO "A02"]
[PlyCount "74"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 Nc6 6. c3 Nf6 7. d4 g4 8. Nh4 Ne7 9. Qd3 Ng6 10. Nxg6 hxg6 11. Bg5 Bf5 12. Bxf6 Bxd3 13. Bxd8 Bxb1 14. Bh4 Be4 15. Rg1 Rh5 16. Bf6 Rxh2 17. Rd1 Rh1 18. Rxh1 Bxg3+ 19. Kd2 Bxh1 20. Bh3 gxh3 21. Rxh1 h2 22. Be5 Bxe5 23. dxe5 Ke7 24. Rxh2 Ke6 25. Rh7 Rd8+ 26. Ke3 Rd5 27. Rh8 Rxe5+ 28. Kd4 Kf5 29. Rc8 Re7 30. Kd5 Rd7+ 31. Kc5 g5 32. Rg8 g4 33. Rh8 Rd6 34. Rh7 Rg6 35. Rxf7+ Ke4 36. Re7+ Kf4 37. e4 g3 0-1

[Event "Den Bosch op"]
[Site "Den Bosch"]
[Date "1992.??.??"]
[Round "6"]
[White "Van der Heijden, Harold"]
[Black "Oud, Niek"]
[Result "0-1"]
[ECO "D02"]
[PlyCount "38"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c5 3. c3 e6 4. Bf4 Nf6 5. e3 Nc6 6. Bd3 Qb6 7. Qc2 cxd4 8. exd4 Bd7 9. h3 Rc8 10. 0-0 Nb4 11. cxb4 Rxc2 12. Bxc2 Bxb4 13. Nc3 0-0 14. Be5 Rc8 15. Rac1 Bxc3 16. bxc3 Qb2 17. Ng5 Rxc3 18. Bxf6 gxf6 19. Nxh7 Kg7 0-1

[Event "Den Bosch op"]
[Site "Den Bosch"]
[Date "1992.??.??"]
[Round "2"]
[White "Van der Heijden, Harold"]
[Black "Span, Paul"]
[Result "1-0"]
[ECO "E99"]
[PlyCount "75"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5 11. Bd2 Nf6 12. f3 f4 13. c5 Rf7 14. cxd6 cxd6 15. Rc1 g5 16. Nf2 Ng6 17. Qc2 h5 18. h3 Bd7 19. Nb5 Bxb5 20. Bxb5 g4 21. fxg4 hxg4 22. hxg4 Nxg4 23. Nxg4 Qb6+ 24. Rf2 Qxb5 25. Qb3 Qd7 26. Qh3 Qe7 27. Qh5 Nf8 28. Rf3 Nh7 29. Rh3 Nf6 30. Nxf6+ Bxf6 31. Qg4+ Rg7 32. Rc8+ Rxc8 33. Qxc8+ Kf7 34. Rc3 Kg6 35. Qg4+ Bg5 36. Qf5+ Kh6 37. Rh3+ Bh4 38. Be1 1-0

[Event "Den Bosch op"]
[Site "Den Bosch"]
[Date "1992.??.??"]
[Round "5"]
[White "Van der Heijden, Harold"]
[Black "Van Oostrum, Henk"]
[Result "1/2-1/2"]
[ECO "A52"]
[PlyCount "28"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Bc5 5. e3 d6 6. Nf3 Nc6 7. exd6 0-0 8. Be2 Qf6 9. Nc3 Nxf2 10. Nd5 Qxf4 11. Nxf4 Nxd1 12. Rxd1 Bxd6 13. Kf2 Bf5 14. Bd3 Bxd3 1/2-1/2

[Event "NED-chT"]
[Site "Netherlands"]
[Date "1987.??.??"]
[Round "?"]
[White "Van der Heijden, Harold"]
[Black "Looser, Rosam"]
[Result "1-0"]
[ECO "E99"]
[PlyCount "103"]
[EventDate "1987.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5 11. Bd2 Nf6 12. f3 f4 13. c5 g5 14. cxd6 cxd6 15. Rc1 Ng6 16. Nb5 Ne8 17. Qc2 Rf7 18. a4 Bf8 19. Be1 h5 20. Bf2 a6 21. Na3 g4 22. Nc4 gxf3 23. Bxf3 Bg4 24. Qe2 Qg5 25. Nb6 Rb8 26. Rc2 Nh4 27. Bxh4 Qxh4 28. Rfc1 Nf6 29. Ne1 Nh7 30. a5 Ng5 31. Rc7 Nxf3+ 32. Nxf3 Qf6 33. h3 Rxc7 34. Rxc7 Qd8 35. Qc2 Bxf3 36. gxf3 Qh4 37. Qf2 Be7 38. Qxh4 Bxh4 39. Nd7 Rd8 40. Rxb7 Be1 41. b4 Rc8 42. Kf1 Rc1 43. Ke2 Rb1 44. b5 Bxa5 45. bxa6 Re1+ 46. Kd3 Re3+ 47. Kc4 Rxf3 48. Nf6+ Kf8 49. a7 Rc3+ 50. Kb5 Rc5+ 51. Ka4 Bd8 52. Nd7+ 1-0

[Event "NED-chT"]
[Site "Netherlands"]
[Date "1987.??.??"]
[Round "?"]
[White "Van der Heijden, Harold"]
[Black "Priems, Pieter"]
[Result "1/2-1/2"]
[ECO "E99"]
[PlyCount "71"]
[EventDate "1987.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5 11. Bd2 Nf6 12. f3 c5 13. dxc6 bxc6 14. b4 Be6 15. Nf2 d5 16. Na4 Bf7 17. Nc5 Nd7 18. Nxd7 Qxd7 19. Qc1 dxe4 20. fxe4 f4 21. Bc3 g5 22. Nd3 Ng6 23. Nc5 Qe7 24. Rd1 g4 25. Bxg4 Qg5 26. Bf3 Nh4 27. Rf1 Bxc4 28. Rf2 Nxf3+ 29. Rxf3 Qh5 30. Qe1 Rad8 31. a3 Rf7 32. Rd1 Rdf8 33. Rd6 Rf6 34. Rxf6 Rxf6 35. Qd2 Qe8 36. Qd7 1/2-1/2

[Event "NED Open-ch12"]
[Site "Dieren"]
[Date "1981.08.??"]
[Round "?"]
[White "Van der Heijden, Harold"]
[Black "De Greef, Heleen"]
[Result "0-1"]
[ECO "D87"]
[PlyCount "98"]
[EventDate "1981.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 0-0 9. 0-0 Nc6 10. Be3 Qc7 11. Rc1 Rd8 12. Qc2 Na5 13. Bd3 c4 14. Bf4 Qc6 15. d5 Qd7 16. Nd4 cxd3 17. Qxd3 e5 18. dxe6 fxe6 19. Bg5 Rf8 20. Qb5 Qxb5 21. Nxb5 Nc4 22. Rb1 h6 23. Bc1 b6 24. Rb4 Ne5 25. Rd1 Bb7 26. f4 Rfd8 27. Rbd4 Nc6 28. Rxd8+ Rxd8 29. Rxd8+ Nxd8 30. Nxa7 Bxe4 31. Be3 Bxc3 32. Bxb6 Nc6 33. Nb5 Bg7 34. a4 Bd3 35. Nc7 Kf7 36. Kf2 Ke7 37. Ke3 Bf1 38. g4 Kd7 39. a5 Nb4 40. f5 gxf5 41. gxf5 exf5 42. Kf4 Bd3 43. a6 Nc6 44. Nd5 Be5+ 45. Ke3 Bxa6 46. h4 Bg3 47. h5 Ke6 48. Bc7 Kxd5 49. Bxg3 Ne5 0-1

[Event "NED Open-ch12"]
[Site "Dieren"]
[Date "1981.08.??"]
[Round "?"]
[White "Van der Heijden, Harold"]
[Black "Van Houten, Henk"]
[Result "0-1"]
[ECO "E99"]
[PlyCount "78"]
[EventDate "1981.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Bd2 f5 11. Nd3 Nf6 12. f3 f4 13. c5 g5 14. cxd6 cxd6 15. Rc1 Bd7 16. Qb3 Ng6 17. Nb5 Ne8 18. Nf2 h5 19. Bb4 Rf6 20. Qa3 Bf8 21. Ba5 b6 22. Bd2 Nh8 23. Qc3 Rg6 24. Na3 g4 25. fxg4 hxg4 26. Nh1 Nf7 27. g3 f3 28. Bxf3 gxf3 29. Qxf3 Qf6 30. Qg2 Qh8 31. Qf2 Rf6 32. Qe2 Bh6 33. Rxf6 Qxf6 34. Rf1 Qg6 35. Bxh6 Nxh6 36. Qf3 Nc7 37. Nc4 Bh3 38. Rf2 Ng4 39. Re2 Rf8 0-1

[Event "NED Open-ch12"]
[Site "Dieren"]
[Date "1981.08.??"]
[Round "?"]
[White "Van der Heijden, Harold"]
[Black "Zollinger, Ronald"]
[Result "0-1"]
[ECO "E99"]
[PlyCount "114"]
[EventDate "1981.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Ne8 10. Nd3 f5 11. Bd2 Nf6 12. f3 f4 13. c5 g5 14. cxd6 cxd6 15. Nb5 a6 16. Na3 h5 17. Nc4 b5 18. Ba5 Qd7 19. Nb6 Qa7 20. Kh1 Rb8 21. Nxc8 Rfxc8 22. Rc1 Rxc1 23. Qxc1 Rc8 24. Qd2 Nd7 25. Rc1 Bf6 26. Rxc8+ Nxc8 27. Qc3 Ncb6 28. b3 Bd8 29. Qc6 Qc7 30. Bb4 Nc8 31. a4 Qxc6 32. dxc6 Nb8 33. axb5 axb5 34. Nb2 Nxc6 35. Bd2 Nd4 36. Bd3 Nxb3 37. Bb4 Nd4 38. Nd1 Bc7 39. Nc3 Na7 40. Nd5 Bb8 41. Bb1 Kg7 42. Bc3 Nac6 43. Bxd4 exd4 44. Kg1 Ba7 45. Kf1 Bc5 46. Ke2 Ne5 47. h4 Kh6 48. Bc2 Nc4 49. Bd3 Na3 50. hxg5+ Kxg5 51. Nc7 Kh4 52. Nxb5 Nxb5 53. Bxb5 Kg3 54. Kf1 h4 55. Bd3 h3 56. gxh3 Kxf3 57. h4 Ke3 0-1

