[Event "Leeuwarden op"]
[Site "Leeuwarden"]
[Date "1994.??.??"]
[Round "8"]
[White "Heite, Remco"]
[Black "Bonkenburg, Jan"]
[Result "1-0"]
[ECO "E88"]
[PlyCount "79"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[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. f3 0-0 6. Be3 e5 7. d5 c6 8. Qd2 cxd5 9. Nxd5 Nxd5 10. cxd5 f5 11. Ne2 f4 12. Bf2 Nd7 13. Nc3 a6 14. Be2 b5 15. b4 Nb6 16. 0-0 Bd7 17. Rfc1 Rc8 18. a4 Nc4 19. Bxc4 Rxc4 20. axb5 axb5 21. Na2 Qc7 22. Rxc4 bxc4 23. Nc3 Rb8 24. Qb2 Bf6 25. b5 Bd8 26. Qb4 Be7 27. b6 Qc8 28. Ra7 Rb7 29. h3 Kf7 30. Qa5 Rb8 31. Rc7 Qe8 32. Qa7 Ra8 33. Qb7 Rb8 34. Qa6 Ra8 35. Qxc4 Rb8 36. Ra7 Qc8 37. Rc7 Qe8 38. Qa6 Ra8 39. Ra7 Rc8 40. b7 1-0

[Event "Haarlem AKN op 01st"]
[Site "Haarlem"]
[Date "1992.??.??"]
[Round "2"]
[White "Bonkenburg, Jan"]
[Black "Kuijf, Marinus"]
[Result "1/2-1/2"]
[ECO "D31"]
[BlackElo "2440"]
[PlyCount "84"]
[EventDate "1992.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Qb3 Nc6 5. Nf3 Nge7 6. Bf4 a5 7. a4 dxc4 8. Qxc4 b6 9. e3 Ba6 10. Qb3 Qd5 11. Qc2 Bxf1 12. Kxf1 Bxc3 13. Qxc3 0-0 14. Ke2 Rfc8 15. Rhc1 Nb4 16. Qc4 Qf5 17. Bg3 c5 18. Qb3 Ned5 19. dxc5 bxc5 20. Qc4 Nb6 21. Qb5 N6d5 22. Nd2 Nf6 23. f3 Nh5 24. Bd6 Qd5 25. Bxc5 Rcb8 26. Qc4 Qe5 27. Bxb4 axb4 28. b3 Qxh2 29. Kf2 Qg3+ 30. Kg1 Nf6 31. Ne4 Nxe4 32. Qxe4 Qg5 33. Rc4 g6 34. Rac1 Ra5 35. f4 Qe7 36. Rc8+ Rxc8 37. Rxc8+ Kg7 38. Rb8 Rd5 39. Qxb4 Rd1+ 40. Kf2 Qh4+ 41. Ke2 Qg4+ 42. Kf2 Qh4+ 1/2-1/2

[Event "Hoogovens M-4K"]
[Site "Beverwijk"]
[Date "1966.01.16"]
[Round "3"]
[White "Bonkenburg, Jan"]
[Black "Bouwmeester, Hans"]
[Result "0-1"]
[ECO "E11"]
[PlyCount "74"]
[EventDate "1966.01.14"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Bd2 Be7 6. Nf3 0-0 7. 0-0 dxc4 8. Qa4 a6 9. Qxc4 b5 10. Qb3 Bb7 11. Bb4 Bxb4 12. Qxb4 Nc6 13. Qd2 Qb8 14. Nc3 Rd8 15. Qf4 Qa7 16. Rfd1 Qb6 17. Rac1 Rac8 18. Ne5 Nxe5 19. Bxb7 Ng6 20. Qf3 Rb8 21. Be4 Rxd4 22. Rxd4 Qxd4 23. Rd1 Qb6 24. Bb1 c5 25. Qd3 Ne5 26. Qd6 Nc4 27. Qxb6 Nxb6 28. Rd6 Kf8 29. Rc6 Nfd7 30. Ne4 Rc8 31. Rd6 Ke7 32. Rd1 Nc4 33. b3 Na3 34. Bd3 c4 35. bxc4 bxc4 36. Rc1 cxd3 37. Rxc8 dxe2 0-1

[Event "Hoogovens M-4K"]
[Site "Beverwijk"]
[Date "1966.01.15"]
[Round "2"]
[White "Henneberke, Frans"]
[Black "Bonkenburg, Jan"]
[Result "1-0"]
[ECO "E67"]
[PlyCount "109"]
[EventDate "1966.01.14"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nf3 0-0 5. 0-0 d6 6. d4 Nbd7 7. Nc3 e5 8. h3 c6 9. Be3 Nh5 10. Qc1 f5 11. Bh6 Qe7 12. Bxg7 Kxg7 13. e3 e4 14. Ne1 Ndf6 15. Nc2 Be6 16. b3 d5 17. cxd5 cxd5 18. Qd2 Kh8 19. Rfc1 g5 20. Ne2 Rg8 21. Ne1 f4 22. exf4 gxf4 23. Nxf4 Rac8 24. Nxe6 Qxe6 25. Rxc8 Rxc8 26. Rc1 Rc6 27. Rxc6 Qxc6 28. Qc2 Qd7 29. Qc3 Ng7 30. Qc5 b6 31. Qf8+ Ng8 32. Qf4 Ne7 33. h4 Ng6 34. Qb8+ Ne8 35. h5 Nf8 36. Qe5+ Kg8 37. f3 exf3 38. Bxf3 Nc7 39. Nd3 Nfe6 40. Nb4 Qg7 41. Bxd5 Qxe5 42. dxe5 Kf7 43. Kf2 a5 44. Bxe6+ Kxe6 45. Nd3 Kd5 46. Ke3 Ne6 47. Nf4+ Kxe5 48. Nxe6 Kxe6 49. Kf4 b5 50. Kg5 Kf7 51. Kh6 Kg8 52. g4 b4 53. g5 Kh8 54. g6 hxg6 55. Kxg6 1-0

[Event "Hoogovens M-4K"]
[Site "Beverwijk"]
[Date "1966.01.14"]
[Round "1"]
[White "Barendregt, Johan"]
[Black "Bonkenburg, Jan"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "43"]
[EventDate "1966.01.14"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 cxb4 5. d4 Qc7 6. a3 Nc6 7. axb4 Bxb4+ 8. c3 Be7 9. Bd3 f5 10. Na3 Nh6 11. Bxh6 gxh6 12. Qd2 0-0 13. Nb5 Qd8 14. Qxh6 Rf7 15. g4 f4 16. g5 Qf8 17. Qh5 Bd7 18. Rg1 Rg7 19. g6 Kh8 20. Ke2 a6 21. gxh7 Be8 22. Qh3 1-0

[Event "Bognor Regis-A"]
[Site "Bognor Regis"]
[Date "1965.??.??"]
[Round "?"]
[White "Bonkenburg, Jan"]
[Black "Ballard, KO."]
[Result "0-1"]
[ECO "E67"]
[PlyCount "57"]
[EventDate "1965.04.21"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ENG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 d6 6. 0-0 Nbd7 7. Nc3 a6 8. e4 Rb8 9. e5 dxe5 10. dxe5 Ng4 11. e6 fxe6 12. Qe2 e5 13. Ng5 Ndf6 14. h3 Nh6 15. Rd1 Qe8 16. Qxe5 Nf7 17. Qxc7 Nxg5 18. Qxb8 Ne6 19. Bxb7 Nd7 20. Qxc8 Qf7 21. Qxd7 Qxf2+ 22. Kh1 Nc5 23. Qd5+ e6 24. Qg2 Nxb7 25. Qxf2 Rxf2 26. Rd7 Nc5 27. Rd8+ Kf7 28. Be3 Rxb2 29. Rf1+ 0-1

[Event "Bognor Regis-A"]
[Site "Bognor Regis"]
[Date "1965.??.??"]
[Round "?"]
[White "Kottnauer, Cenek"]
[Black "Bonkenburg, Jan"]
[Result "1-0"]
[ECO "B16"]
[PlyCount "55"]
[EventDate "1965.04.21"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ENG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Bc4 Bf5 7. d4 Qc7 8. Qe2 e6 9. 0-0 Bd6 10. a4 Nd7 11. a5 0-0 12. h3 Rfe8 13. Be3 Kh8 14. Nh4 Bg6 15. Nxg6+ hxg6 16. Rfd1 f5 17. Bb3 Bf4 18. c4 Rad8 19. a6 b6 20. Ba4 Bxe3 21. Qxe3 Kg7 22. Qf3 Nb8 23. Qc3 Kh7 24. d5 exd5 25. cxd5 Re2 26. dxc6 Rxd1+ 27. Rxd1 Qf4 28. Qf3 1-0

