[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2023.06.25"]
[Round "6"]
[White "Boekelman, Jan"]
[Black "Van Osch, Mees"]
[Result "0-1"]
[ECO "E75"]
[WhiteElo "2103"]
[BlackElo "2318"]
[PlyCount "86"]
[EventDate "2023.06.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Bg5 c5 7. d5 e6 8. Qc1 exd5 9. exd5 Re8 10. Nf3 Bg4 11. 0-0 Nbd7 12. h3 Bxf3 13. Bxf3 a6 14. a4 Qa5 15. Bd2 Qc7 16. Qc2 Re7 17. Rae1 Rae8 18. Rxe7 Rxe7 19. g4 h6 20. Be2 Qd8 21. f4 Nh7 22. Bd3 Bd4+ 23. Kg2 Kg7 24. Ne4 Ndf6 25. Ng3 Qe8 26. g5 hxg5 27. fxg5 Nd7 28. h4 Ne5 29. Be2 Kg8 30. Bf4 Nf8 31. Rh1 Nh7 32. h5 Nf8 33. Kf1 gxh5 34. Nf5 Nfg6 35. Bc1 h4 36. Nxd6 Qf8 37. Nf5 Rd7 38. Nxh4 Nxh4 39. Rxh4 Ng6 40. Rh6 Qd6 41. Bh5 Qg3 42. Qg2 Qd3+ 43. Be2 Qb1 0-1

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2023.06.23"]
[Round "2"]
[White "Boekelman, Jan"]
[Black "Roebers, Eline"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "2103"]
[BlackElo "2415"]
[PlyCount "66"]
[EventDate "2023.06.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. g3 0-0 5. Bg2 d6 6. Nc3 Nc6 7. d5 Na5 8. b3 a6 9. Bb2 Rb8 10. Nd2 c5 11. 0-0 b5 12. Qc1 e6 13. dxe6 Bxe6 14. cxb5 axb5 15. Nce4 Ne8 16. Bxg7 Kxg7 17. f4 h6 18. Rd1 Qb6 19. Kh1 f5 20. Nc3 Nf6 21. e4 Nc6 22. Nd5 Bxd5 23. exd5 Nb4 24. Nf1 Rbe8 25. a3 Na6 26. Qb2 Nc7 27. Re1 Kf7 28. Ne3 Re7 29. Re2 Rfe8 30. Rae1 c4 31. Qc3 cxb3 32. Qxb3 Ng4 33. Nxg4 Rxe2 0-1

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2022.06.18"]
[Round "4"]
[White "Boekelman, Jan"]
[Black "De Groote, Ewoud"]
[Result "0-1"]
[ECO "A62"]
[WhiteElo "2116"]
[BlackElo "2233"]
[PlyCount "122"]
[EventDate "2022.06.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 0-0 9. 0-0 Re8 10. Bf4 Ne4 11. Nxe4 Rxe4 12. Nd2 Rb4 13. a3 Rxf4 14. gxf4 Bxb2 15. Rb1 Bg7 16. Nc4 b6 17. Ne5 Bf5 18. e4 dxe5 19. exf5 Nd7 20. d6 Rb8 21. fxg6 hxg6 22. Qd5 Nf6 23. Qc6 exf4 24. Rfe1 Ng4 25. d7 Qh4 26. Re8+ Kh7 27. d8Q Qxf2+ 28. Kh1 Rxd8 29. Rxd8 Bd4 30. Rxd4 Qxd4 31. h3 Ne3 32. Qe4 Qxe4 33. Bxe4 f5 34. Bf3 g5 35. Rb2 c4 36. Rd2 c3 37. Rd7+ Kg6 38. Rd3 c2 39. Rc3 Kf6 40. Be2 Ke5 41. Kg1 Kd4 42. Rd3+ Ke4 43. Rc3 f3 44. Bb5 f2+ 45. Kh1 f4 46. Rc8 Kd4 47. a4 a5 48. Rc7 Ke4 49. Rc8 Kd4 50. Rc7 f3 51. Rc8 f1Q+ 52. Bxf1 Nxf1 53. Rxc2 Ng3+ 54. Kg1 Ne4 55. Rb2 Ke3 56. Rb3+ Kf4 57. Rd3 Kg3 58. Kf1 Nf2 59. Rb3 Nxh3 60. Rxb6 g4 61. Rb5 Kf4 0-1

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2022.06.18"]
[Round "3"]
[White "Van Foreest, Machteld"]
[Black "Boekelman, Jan"]
[Result "1-0"]
[ECO "B28"]
[WhiteElo "2295"]
[BlackElo "2116"]
[PlyCount "35"]
[EventDate "2022.06.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. c4 Nc6 4. d4 cxd4 5. Nxd4 e5 6. Nf5 d5 7. cxd5 Bxf5 8. exf5 Nd4 9. Nc3 Nf6 10. Bg5 Be7 11. Bxf6 Bxf6 12. Bd3 Qd7 13. 0-0 Nxf5 14. Na4 Rd8 15. Nb6 Qd6 16. Qa4+ Kf8 17. Nc4 Qc7 18. Bxf5 1-0

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2022.06.17"]
[Round "2"]
[White "Boekelman, Jan"]
[Black "Roebers, Eline"]
[Result "1-0"]
[ECO "E75"]
[WhiteElo "2116"]
[BlackElo "2378"]
[PlyCount "47"]
[EventDate "2022.06.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Bg5 c5 7. d5 e6 8. Qc1 exd5 9. exd5 Re8 10. Nf3 b5 11. cxb5 a6 12. 0-0 Nbd7 13. a4 Qa5 14. Bd2 Qc7 15. bxa6 Nb6 16. Bb5 Bd7 17. Rd1 Ne4 18. Nxe4 Rxe4 19. Ba5 Bxb5 20. axb5 c4 21. Qc2 Rf4 22. Qe2 Qc5 23. Qe3 Qxe3 24. fxe3 1-0

[Event "Leiden Noteboom op 80th"]
[Site "Leiden"]
[Date "2020.02.29"]
[Round "4"]
[White "Boekelman, Jan"]
[Black "Van Ketel, Raoul"]
[Result "0-1"]
[ECO "E15"]
[WhiteElo "2119"]
[BlackElo "2224"]
[PlyCount "56"]
[EventDate "2020.02.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nf3 b6 4. g3 Ba6 5. Qc2 Bb7 6. Bg2 c5 7. d5 exd5 8. cxd5 Nxd5 9. 0-0 Be7 10. Rd1 Nc6 11. a3 Nc7 12. Nc3 0-0 13. Qd3 d5 14. Nxd5 Nxd5 15. Qxd5 Qxd5 16. Rxd5 Bf6 17. Rd7 Na5 18. Bd2 Bc6 19. Rc7 Nb3 20. Rxc6 Nxa1 21. Rxf6 gxf6 22. Bc3 Rad8 23. Bh3 Nb3 24. e3 Rd6 25. Nh4 Rfd8 26. Kg2 b5 27. Nf5 Rb6 28. e4 b4 0-1

[Event "Haarlem Nova College op 16th"]
[Site "Haarlem"]
[Date "2019.06.30"]
[Round "5"]
[White "Boekelman, Jan"]
[Black "Arnaudov, Petar G"]
[Result "0-1"]
[ECO "E06"]
[WhiteElo "2106"]
[BlackElo "2478"]
[PlyCount "50"]
[EventDate "2019.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 0-0 6. 0-0 c6 7. Nbd2 b6 8. Qc2 c5 9. e4 Nc6 10. exd5 exd5 11. dxc5 bxc5 12. cxd5 Nb4 13. Qb3 Bf5 14. Nh4 Bc2 15. Qc3 Nfxd5 16. Bxd5 Qxd5 17. a3 Bf6 18. Qf3 Qxf3 19. Ndxf3 Nd3 20. Ne1 Nxe1 21. Rxe1 c4 22. Ng2 c3 23. b4 Ba4 24. Bf4 Rfe8 25. Ra2 c2 0-1

[Event "Haarlem Nova College op-A 12th"]
[Site "Haarlem"]
[Date "2013.06.30"]
[Round "5"]
[White "Arp, Frans"]
[Black "Boekelman, Jan"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "2033"]
[BlackElo "2088"]
[PlyCount "106"]
[EventDate "2013.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[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 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Bf3 Qa5 12. Bxc6 bxc6 13. Nxc6 Qc7 14. Nd4 Rd8 15. c3 Ba6 16. Qb3 Rab8 17. Ne6 Qc8 18. Nxd8 Rxb3 19. Rfd1 Rb8 20. Rd2 Qc7 21. Rad1 Be5 22. Rd7 Rxd8 23. Rxd8+ Kg7 24. Bd4 Bxd4 25. R8xd4 Bb7 26. R4d2 e5 27. f3 Qc5+ 28. Kh1 Bc6 29. Rd3 f5 30. h3 Kh6 31. R1d2 Kg5 32. Kh2 h5 33. Rd6 h4 34. a3 e4 35. fxe4 fxe4 36. R2d4 Kh5 37. Re6 Bb7 38. Rdd6 Qf5 39. Rf6 Qg5 40. Kg1 Qe3+ 41. Kh2 Qg3+ 42. Kg1 e3 43. Rxg6 Qf2+ 44. Kh1 Qf1+ 45. Kh2 Qf4+ 46. Kg1 e2 47. Rh6+ Qxh6 48. Rxh6+ Kxh6 49. Kf2 Ba6 50. b3 Bd3 51. c4 Kg6 52. c5 Kf6 53. a4 a5 0-1

[Event "Haarlem Nova College op-A 12th"]
[Site "Haarlem"]
[Date "2013.06.30"]
[Round "6"]
[White "Boekelman, Jan"]
[Black "Van Osch, Mees"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2088"]
[BlackElo "2180"]
[PlyCount "60"]
[EventDate "2013.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. d4 d6 6. 0-0 Nc6 7. Nc3 Bf5 8. d5 Na5 9. Nd2 c6 10. b4 Nxd5 11. cxd5 Bxc3 12. e4 Bxe4 13. Bxe4 Bxa1 14. bxa5 c5 15. Nc4 Bg7 16. Qb3 Rb8 17. Rd1 Qd7 18. a4 Bd4 19. Bf4 b5 20. axb6 axb6 21. Rb1 Qa7 22. Nxd6 exd6 23. Bxd6 Qd7 24. Bxb8 Rxb8 25. Kg2 Kg7 26. h3 Qe7 27. Qf3 Qc7 28. Qd3 Rd8 29. Bf3 Rd6 30. Re1 Qd7 1/2-1/2

[Event "Haarlem Nova College op-A 12th"]
[Site "Haarlem"]
[Date "2013.06.29"]
[Round "4"]
[White "Boekelman, Jan"]
[Black "Boes, Robert"]
[Result "1/2-1/2"]
[ECO "E09"]
[WhiteElo "2088"]
[PlyCount "90"]
[EventDate "2013.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 c6 2. c4 d5 3. g3 Nf6 4. Bg2 e6 5. 0-0 Be7 6. d4 0-0 7. Qc2 Nbd7 8. Nbd2 Re8 9. Rd1 Qc7 10. e4 dxe4 11. Nxe4 Nxe4 12. Qxe4 Nf6 13. Qe2 b6 14. Bf4 Bd6 15. Bxd6 Qxd6 16. Ne5 Bb7 17. Rac1 Rec8 18. Qe1 Rab8 19. c5 Qc7 20. cxb6 axb6 21. Nxc6 Bxc6 22. Rxc6 Qa7 23. Rxc8+ Rxc8 24. Rc1 Rd8 25. a3 h6 26. Qb4 Qa5 27. Rc4 Qxb4 28. Rxb4 Rd6 29. Kf1 Kf8 30. Ke2 Ke7 31. h3 Ne8 32. Ra4 Nc7 33. Ra7 Kd8 34. Ke3 h5 35. h4 g6 36. Ra4 Ke7 37. Rc4 Kd7 38. b4 b5 39. Rc5 Ra6 40. Kf4 Rxa3 41. Bc6+ Kd8 42. Bxb5 Rb3 43. Bc6 Rxb4 44. Ke3 Rb6 45. d5 Nxd5+ 1/2-1/2

[Event "Haarlem Nova College op-A 12th"]
[Site "Haarlem"]
[Date "2013.06.29"]
[Round "2"]
[White "Boekelman, Jan"]
[Black "Schoehuys, Erik"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2088"]
[BlackElo "2196"]
[PlyCount "66"]
[EventDate "2013.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 d6 5. d4 Bg4 6. d5 Nd4 7. Be3 Nxf3+ 8. gxf3 Bd7 9. Qd2 Nh5 10. Ne2 Be7 11. Rg1 0-0 12. f4 exf4 13. Nxf4 Nxf4 14. Bxf4 Kh8 15. 0-0-0 Bf6 16. Bd3 a6 17. Kb1 Qe7 18. Rde1 c5 19. Qe3 Be5 20. Rg3 Rae8 21. Reg1 Bxf4 22. Qxf4 Rg8 23. Rg5 g6 24. h4 b5 25. h5 bxc4 26. Bc2 f6 27. R5g3 g5 28. Qd2 Qe5 29. Qe2 Rb8 30. b3 cxb3 31. Rxb3 Ba4 32. f3 Bxb3 33. Bxb3 a5 0-1

[Event "Haarlem Nova College op-A 12th"]
[Site "Haarlem"]
[Date "2013.06.29"]
[Round "3"]
[White "Galje, Hans"]
[Black "Boekelman, Jan"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "2109"]
[BlackElo "2088"]
[PlyCount "60"]
[EventDate "2013.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. Nf3 d6 8. g3 Bg7 9. Bg2 Nfd7 10. 0-0 Nb6 11. Qc2 N8d7 12. Rd1 0-0 13. e4 Nc4 14. Rb1 Qa5 15. Nd2 Nde5 16. Nxc4 Nxc4 17. Bf1 Rfb8 18. Bxc4 Bxc4 19. Bd2 Qa6 20. Be3 Bxa2 21. Ra1 Qc4 22. Rdc1 Bb3 23. Qd2 Qb4 24. f3 h5 25. Kh1 Bc4 26. Nd1 Qxd2 27. Bxd2 Be2 28. Kg2 Bxd1 29. Rxd1 Rxa1 30. Rxa1 Rxb2 0-1

[Event "Haarlem Nova College op-A 12th"]
[Site "Haarlem"]
[Date "2013.06.28"]
[Round "1"]
[White "Willemze, Thomas"]
[Black "Boekelman, Jan"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2420"]
[BlackElo "2088"]
[PlyCount "59"]
[EventDate "2013.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 a6 5. Bg5 Nc6 6. Qd2 h6 7. Be3 Nf6 8. h3 e6 9. f4 b5 10. Bd3 Bb7 11. Nf3 Be7 12. 0-0 0-0 13. Rad1 d5 14. e5 d4 15. Qe1 dxe3 16. exf6 e2 17. Qxe2 Qb6+ 18. Kh1 Bxf6 19. Ne5 Nxe5 20. fxe5 Bg5 21. Be4 Rad8 22. Rxd8 Rxd8 23. h4 Bd2 24. Qf3 Rd7 25. Rd1 Bxe4 26. Nxe4 Qd8 27. Qg4 Rd4 28. c3 Rd3 29. Nd6 Qd7 30. Qe2 1-0

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2008.04.07"]
[Round "3"]
[White "Hunt, Adam"]
[Black "Boekelman, Jan"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "2466"]
[BlackElo "2040"]
[PlyCount "77"]
[EventDate "2008.04.05"]
[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 Nc6 8. Qd2 0-0 9. 0-0-0 d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Bd4 e5 13. Bc5 Be6 14. Ne4 Re8 15. h4 h6 16. g4 Qc7 17. g5 h5 18. Bc4 Red8 19. Qf2 Qb7 20. Rd2 Nf4 21. Bxe6 Rxd2 22. Qxd2 Nxe6 23. Bd6 Rd8 24. Qa5 c5 25. Rd1 Rc8 26. Rd3 Nd4 27. Bxc5 Qc6 28. Qxa7 Nxf3 29. Qd7 Qxe4 30. Qxc8+ Kh7 31. Qh3 Ne1 32. Rd2 Qc4 33. Bf2 Qe4 34. Qe3 Qxe3 35. Bxe3 Nf3 36. Rf2 Nxh4 37. a4 Nf5 38. Bc5 f6 39. a5 1-0

[Event "NED-ch H corr"]
[Site "Netherlands"]
[Date "1982.??.??"]
[Round "?"]
[White "Priems, P."]
[Black "Boekelman, Jan"]
[Result "1-0"]
[ECO "D89"]
[PlyCount "49"]
[EventDate "1982.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[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 cxd4 10. cxd4 Nc6 11. Be3 Bg4 12. f3 Na5 13. Bd3 Be6 14. Qa4 a6 15. d5 b5 16. Qb4 Bxa1 17. Rxa1 Bd7 18. Qd4 Re8 19. e5 e6 20. d6 Nc6 21. Qf4 Rf8 22. Qg3 f6 23. Bxg6 hxg6 24. Qxg6+ Kh8 25. Nf4 1-0

[Event "NED corr"]
[Site "Netherlands"]
[Date "1979.??.??"]
[Round "?"]
[White "Koelink, S."]
[Black "Boekelman, Jan"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "69"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Bc4 Nc6 4. d4 Qe7 5. Bg5 Nf6 6. Nbd2 d6 7. 0-0 f4 8. Re1 Bd7 9. d5 Nd8 10. Bxf4 Nf7 11. Be3 Rg8 12. a4 a6 13. b4 b6 14. Qe2 Bc8 15. Bd3 g5 16. Rf1 g4 17. Ne1 Nh5 18. Kh1 Nf4 19. Qd1 Rg6 20. g3 Nh3 21. f4 exf4 22. Bxf4 Nxf4 23. Rxf4 Bg7 24. e5 dxe5 25. Rc4 Rd6 26. Bxh7 Ng5 27. Be4 Nh3 28. Nd3 Qd7 29. Qe2 Bb7 30. a5 Bxd5 31. Bxd5 Rxd5 32. axb6 cxb6 33. Qe4 Ra7 34. Qg6+ Kd8 35. Qxb6+ 1-0

[Event "NED U20-ch28"]
[Site "Rotterdam"]
[Date "1978.??.??"]
[Round "7"]
[White "Boekelman, Jan"]
[Black "Bressers, Rene"]
[Result "1-0"]
[ECO "A36"]
[PlyCount "65"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. e4 d6 6. Nge2 c5 7. 0-0 Nc6 8. d3 a6 9. a3 Rb8 10. Rb1 b5 11. cxb5 axb5 12. b4 cxb4 13. axb4 Bg4 14. h3 Bd7 15. Be3 Ne8 16. Qd2 Nc7 17. f4 Na6 18. Nd1 Qc8 19. Nf2 e5 20. Rfc1 Qd8 21. d4 exd4 22. Nxd4 Nxd4 23. Bxd4 Bxd4 24. Qxd4 Be6 25. Rc6 Nc7 26. Rxd6 Qe7 27. Rd1 Ne8 28. Rc6 Bc4 29. Ng4 Ng7 30. Rd6 Be2 31. Nf6+ Kh8 32. Rd2 Bc4 33. Nd7 1-0

[Event "NED U20-ch28"]
[Site "Rotterdam"]
[Date "1978.??.??"]
[Round "8"]
[White "Boekelman, Jan"]
[Black "Hoeksema, Hendrik Pieter"]
[Result "1/2-1/2"]
[ECO "A36"]
[PlyCount "70"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. e4 e5 6. Nge2 0-0 7. 0-0 Nc6 8. d3 d6 9. h3 a6 10. a3 Rb8 11. Rb1 b5 12. cxb5 axb5 13. b4 cxb4 14. axb4 Be6 15. Bg5 Qd7 16. Kh2 Ne8 17. Be3 Nc7 18. Nd5 Bxd5 19. exd5 Ne7 20. Qb3 f5 21. f4 Kh8 22. Rbc1 Rfc8 23. fxe5 Bxe5 24. Nf4 Ne8 25. Ne6 Rxc1 26. Rxc1 Rc8 27. Rxc8 Qxc8 28. Nd4 g5 29. Nxb5 f4 30. gxf4 Qf5 31. fxe5 Qxe5+ 32. Kh1 Qxe3 33. Qc3+ Kg8 34. Nd4 Qe5 35. Qc4 Qe1+ 1/2-1/2

[Event "NED U20-ch28"]
[Site "Rotterdam"]
[Date "1978.??.??"]
[Round "2"]
[White "Boekelman, Jan"]
[Black "In't Veld, Henry"]
[Result "1/2-1/2"]
[ECO "A36"]
[PlyCount "100"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 c5 3. g3 g6 4. Bg2 Bg7 5. e4 Nc6 6. Nge2 0-0 7. 0-0 d6 8. d3 Bd7 9. h3 Rb8 10. Rb1 a6 11. a3 b5 12. cxb5 axb5 13. b4 cxb4 14. axb4 Qc8 15. Kh2 Qb7 16. d4 Qc7 17. Be3 Rfc8 18. Qd2 e5 19. Rfc1 exd4 20. Nxd4 Nxd4 21. Bxd4 Qd8 22. e5 dxe5 23. Ba7 Bf5 24. Qxd8+ Rxd8 25. Bxb8 Bxb1 26. Bc7 Rc8 27. Nxb1 Ne8 28. Bb7 Rxc7 29. Rxc7 Nxc7 30. Bc6 Na6 31. Bxb5 Nxb4 32. Nd2 Kf8 33. Kg2 f5 34. Bc4 Nc6 35. Nf1 Bh6 36. Ne3 Bxe3 37. fxe3 e4 38. g4 h5 39. gxh5 gxh5 40. Kg3 Kg7 41. Kf4 Kf6 42. h4 Ne7 43. Kg3 Nc6 44. Bb5 Ne5 45. Be8 Ng4 46. Kf4 Nf2 47. Bxh5 Nd3+ 48. Kg3 Ke5 49. Bd1 f4+ 50. exf4+ Nxf4 1/2-1/2

[Event "NED U20-ch28"]
[Site "Rotterdam"]
[Date "1978.??.??"]
[Round "4"]
[White "Boekelman, Jan"]
[Black "Wind, Maurits M"]
[Result "0-1"]
[ECO "A25"]
[PlyCount "56"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 d6 3. g3 Nc6 4. Bg2 f5 5. d3 Be6 6. Nd5 Be7 7. Rb1 Qd7 8. b4 Nd8 9. b5 Nf6 10. Nxe7 Qxe7 11. Nf3 0-0 12. Ba3 Bd7 13. Bb4 Ng4 14. e4 f4 15. h3 Nh6 16. d4 exd4 17. Qxd4 fxg3 18. 0-0 gxf2+ 19. Rxf2 Rf4 20. Re1 Qe6 21. Bc3 Qe7 22. Bd2 Ne6 23. Qc3 Rf6 24. e5 dxe5 25. Rxe5 Nf7 26. Re1 c6 27. Nd4 Rxf2 28. Kxf2 Qh4+ 0-1

[Event "NED U20-ch28"]
[Site "Rotterdam"]
[Date "1978.??.??"]
[Round "9"]
[White "Janssen, Han"]
[Black "Boekelman, Jan"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "2040"]
[PlyCount "34"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 e5 7. d3 Nge7 8. Nd2 0-0 9. Nc4 f5 10. Nb5 d5 11. exd5 Nxd5 12. Nbd6 Be6 13. Nxb7 Qe7 14. Nba5 Nxa5 15. Nxa5 Rac8 16. Re1 Qf7 17. Nc4 Qc7 1-0

[Event "NED U20-ch28"]
[Site "Rotterdam"]
[Date "1978.??.??"]
[Round "5"]
[White "Stehouwer, Coen"]
[Black "Boekelman, Jan"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "73"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 d6 6. cxd4 Nc6 7. Bc4 e6 8. 0-0 Be7 9. Qe2 0-0 10. Nc3 Nxc3 11. bxc3 b6 12. Bd3 Bb7 13. Qe4 g6 14. Bh6 Re8 15. Rad1 Na5 16. Qf4 Bxf3 17. Qxf3 Bg5 18. Bxg5 Qxg5 19. exd6 Red8 20. Rfe1 Rab8 21. Re5 Qh6 22. d5 Rxd6 23. dxe6 fxe6 24. Bb5 Rf8 25. Rxd6 Rxf3 26. gxf3 Qf4 27. Rdxe6 Qxf3 28. Re8+ Kg7 29. Re3 Qd1+ 30. Bf1 Nc6 31. R8e6 Na5 32. h3 Qa1 33. Re7+ Kh6 34. Rxa7 Qxa2 35. Ree7 Qg8 36. Rxh7+ Kg5 37. Raf7 1-0

[Event "NED U20-ch28"]
[Site "Rotterdam"]
[Date "1978.??.??"]
[Round "6"]
[White "Teeuwen, Jos"]
[Black "Boekelman, Jan"]
[Result "1-0"]
[ECO "A25"]
[PlyCount "55"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. e3 Bg7 5. Ne2 d6 6. Nbc3 e5 7. d3 Nc6 8. 0-0 Ne7 9. Rb1 Rb8 10. b4 0-0 11. Bd2 Be6 12. Qc2 g5 13. f4 gxf4 14. exf4 c6 15. c5 dxc5 16. fxe5 Ng4 17. Nf4 Bc8 18. Nce2 Bxe5 19. Qxc5 Qb6 20. d4 Qxc5 21. bxc5 Bc7 22. d5 cxd5 23. Nxd5 Nxd5 24. Bxd5+ Kg7 25. Bf4 Bxf4 26. Nxf4 Ne3 27. Rfe1 Nxd5 28. Nxd5 1-0

[Event "NED U20-ch28"]
[Site "Rotterdam"]
[Date "1978.??.??"]
[Round "3"]
[White "Van Helvoort, Rob AM"]
[Black "Boekelman, Jan"]
[Result "1/2-1/2"]
[ECO "B56"]
[PlyCount "69"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g5 6. Be2 Bg7 7. Be3 Nc6 8. 0-0 0-0 9. Nb3 Be6 10. f4 Qc8 11. h3 Rd8 12. Qe1 d5 13. e5 d4 14. exf6 Bxf6 15. Nxd4 Nxd4 16. Bd3 Bc4 17. Rc1 Bxd3 18. cxd3 Qd7 19. Ne4 Bg7 20. g4 f5 21. Nc5 Qd5 22. Qd1 Qxa2 23. Rf2 Qd5 24. Rc4 Rac8 25. Na4 Rxc4 26. dxc4 Qxc4 27. Rd2 Nf3+ 28. Qxf3 Rxd2 29. Bxd2 Qxa4 30. gxf5 Qd7 31. Qb3+ Kh8 32. Bc3 gxf4 33. Qf7 Qd1+ 34. Kg2 Qe2+ 35. Kg1 1/2-1/2

[Event "NED U20-ch28"]
[Site "Rotterdam"]
[Date "1978.??.??"]
[Round "1"]
[White "Van de Plassche, Erik"]
[Black "Boekelman, Jan"]
[Result "1-0"]
[ECO "A83"]
[PlyCount "63"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 g6 3. e4 fxe4 4. Nc3 Bg7 5. Bc4 Nf6 6. Bxf6 exf6 7. Qd2 f5 8. 0-0-0 b5 9. Nxb5 d5 10. Bxd5 c6 11. Qf4 cxd5 12. Nc7+ Kf7 13. Nxa8 Na6 14. h4 Bb7 15. g4 h5 16. Nh3 hxg4 17. Ng5+ Ke7 18. h5 gxh5 19. Qxf5 Qg8 20. Nxe4 dxe4 21. d5 Bxa8 22. d6+ Kd8 23. Qa5+ Kd7 24. Qxa6 Qb8 25. c3 Qb6 26. Qc4 Rf8 27. Rxh5 Rxf2 28. Rb5 Qc6 29. Rc5 Qb6 30. Rc7+ Kd8 31. Qg8+ Bf8 32. Qg5+ 1-0

[Event "NED corr"]
[Site "Netherlands"]
[Date "1975.??.??"]
[Round "?"]
[White "Heijnens, RJH"]
[Black "Boekelman, Jan"]
[Result "1/2-1/2"]
[ECO "C18"]
[PlyCount "46"]
[EventDate "1975.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Kd1 Nd7 11. Nf3 Nxe5 12. Bf4 Qxc3 13. Nxe5 Qxa1+ 14. Bc1 Rf8 15. Bb5+ Nc6 16. Nxc6 Bd7 17. Ne5 Bxb5 18. Nxf7 Rxf7 19. Qg8+ Ke7 20. Qxa8 Ba6 21. Re1 Rxf2 22. Rxe6+ Kxe6 23. Qe8+ Kd6 1/2-1/2

