[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1992.??.??"]
[Round "?"]
[White "Folkertsma, Peter"]
[Black "Van Beusekom, Leo"]
[Result "1/2-1/2"]
[ECO "D36"]
[PlyCount "55"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 Be7 7. Nf3 c6 8. Bd3 0-0 9. 0-0 h6 10. Bh4 Re8 11. Qc2 Nh5 12. Bxe7 Qxe7 13. Rab1 Nhf6 14. b4 Ne4 15. Bxe4 dxe4 16. Nd2 Nf6 17. b5 Bd7 18. bxc6 Bxc6 19. Qb3 Red8 20. Nc4 b6 21. Ne5 Bb7 22. Rfd1 Rac8 23. Rbc1 Kf8 24. Qa4 Ba8 25. a3 Nd7 26. Nd5 Bxd5 27. Nxd7+ Kg8 28. Ne5 1/2-1/2

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "1"]
[White "Van Beusekom, Leo"]
[Black "Den Boer, Henk"]
[Result "1-0"]
[ECO "B84"]
[PlyCount "103"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 d6 6. Be3 Nf6 7. Be2 b5 8. f3 Bb7 9. 0-0 Nbd7 10. a4 b4 11. Na2 d5 12. c3 bxc3 13. Nxc3 dxe4 14. fxe4 Nxe4 15. Nxe4 Bxe4 16. Bf3 Bxf3 17. Qxf3 Ne5 18. Qg3 Ng6 19. Qf3 Ne5 20. Qh5 Ng6 21. Rad1 Qc7 22. Qf3 Rd8 23. Nxe6 fxe6 24. Rxd8+ Kxd8 25. Qa8+ Kd7 26. Rd1+ Bd6 27. Qxa6 Rb8 28. Qe2 Ke8 29. Qh5 Rxb2 30. Rf1 Qc2 31. Qf3 Ne5 32. Qh3 Qg6 33. Bd4 Rb1 34. Bxe5 Bxe5 35. Qe3 Rxf1+ 36. Kxf1 Qf6+ 37. Ke2 Bxh2 38. g3 Qb2+ 39. Kf1 Qa1+ 40. Kg2 Qb2+ 41. Kh3 e5 42. a5 Qa2 43. Qxe5+ Kf7 44. Qc7+ Kf6 45. Qb6+ Ke5 46. Qc7+ Kf6 47. Qc6+ Kg5 48. Qc5+ Kh6 49. Qb6+ g6 50. a6 Kh5 51. a7 g5 52. g4# 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "3"]
[White "Van Beusekom, Leo"]
[Black "Piersma, Jan"]
[Result "0-1"]
[ECO "E12"]
[PlyCount "106"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nf3 Nf6 4. Bg5 Be7 5. e3 0-0 6. Bd3 Nbd7 7. Nc3 b6 8. 0-0 Bb7 9. Qc2 dxc4 10. Bxc4 Bxf3 11. gxf3 Nh5 12. Bxe7 Qxe7 13. Bd3 g6 14. Be4 Rac8 15. Qa4 a5 16. Bc6 Nb8 17. Bb7 Rcd8 18. Qb5 Qb4 19. Rac1 c5 20. Qxb4 cxb4 21. Nb5 Rd7 22. Bc6 Rdd8 23. Bb7 Rd7 24. Ba8 Na6 25. Bc6 Rdd8 26. Bb7 Nb8 27. Rc7 Nf6 28. e4 Ne8 29. Re7 Nd6 30. Nxd6 Rxd6 31. d5 exd5 32. exd5 Nd7 33. Rc1 Nf6 34. Rd1 Rfd8 35. Re5 Nd7 36. Re7 Kf8 37. Rde1 Nf6 38. R7e5 Nxd5 39. Bxd5 Rxd5 40. Rxd5 Rxd5 41. Re2 b3 42. axb3 Rd3 43. b4 a4 44. Kg2 Rb3 45. Kf1 Rxb4 46. Kg2 Rb3 47. Kg3 b5 48. Kg2 Rd3 49. Re5 Rb3 50. Re2 Kg7 51. f4 b4 52. h3 a3 53. bxa3 bxa3 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "2"]
[White "Van Egmond, Joost"]
[Black "Van Beusekom, Leo"]
[Result "0-1"]
[ECO "B95"]
[PlyCount "76"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qd2 Be7 8. Bc4 Qc7 9. Bb3 0-0 10. f4 h6 11. h4 hxg5 12. hxg5 Rd8 13. gxf6 Bxf6 14. g4 Nc6 15. Qh2 Kf8 16. Nde2 Nd4 17. Nxd4 Bxd4 18. Nd1 Bxb2 19. Rb1 Bc3+ 20. Ke2 b5 21. Qg3 b4 22. Rh8+ Ke7 23. Rxd8 Kxd8 24. Nxc3 bxc3 25. Rd1 Bb7 26. Qd3 Ke7 27. f5 Qc6 28. fxe6 fxe6 29. Ke3 Rh8 30. Rf1 Rh3+ 31. Rf3 Qc5+ 32. Ke2 Rh2+ 33. Kf1 Rh1+ 34. Ke2 Qg1 35. Qxc3 Rh2+ 36. Kd3 Qd1+ 37. Ke3 Qe2+ 38. Kf4 Qxe4+ 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "4"]
[White "Visser, Paul Robert"]
[Black "Van Beusekom, Leo"]
[Result "1-0"]
[ECO "C99"]
[PlyCount "75"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Nc6 14. d5 Nb4 15. Bb1 a5 16. a3 Na6 17. Nf1 Nc5 18. Ng3 Re8 19. Bd2 Ba6 20. Bc2 Rec8 21. Rc1 Ncd7 22. Bd3 Qd8 23. Qe2 Rxc1 24. Rxc1 Nc5 25. Nf5 Bf8 26. b4 Nb3 27. Rc2 Nxd2 28. Qxd2 a4 29. Qe3 Rc8 30. Qg5 Qd7 31. Rxc8 Qxc8 32. Nh6+ Kh8 33. Nxf7+ Kg8 34. Nh6+ Kh8 35. Ng4 Nxg4 36. Qxg4 Qc1+ 37. Bf1 Qxa3 38. Qf5 1-0

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1989.??.??"]
[Round "6"]
[White "Kayser, Eddy"]
[Black "Van Beusekom, Leo"]
[Result "1-0"]
[ECO "A14"]
[PlyCount "76"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. b3 Nbd7 7. Bb2 c6 8. d3 Re8 9. Qc2 Qc7 10. d4 dxc4 11. bxc4 c5 12. Nc3 a6 13. d5 Nb6 14. Nd2 exd5 15. cxd5 Bg4 16. e4 Rad8 17. a4 Bh5 18. a5 Nc8 19. Rfe1 Bg6 20. Qa4 b5 21. axb6 Nxb6 22. Qxa6 Ra8 23. Qe2 c4 24. e5 Bc5 25. Rxa8 Nxa8 26. Nxc4 Nb6 27. Nxb6 Bxb6 28. d6 Qd7 29. Nd5 Bc5 30. Ne7+ Kf8 31. Nxg6+ hxg6 32. Qc2 Rc8 33. exf6 gxf6 34. Qe2 Qxd6 35. Qf3 Qd2 36. Qe2 Bb4 37. Qxd2 Bxd2 38. Rd1 Bc3 1-0

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1989.??.??"]
[Round "1"]
[White "Rietveld, Johan"]
[Black "Van Beusekom, Leo"]
[Result "0-1"]
[ECO "B66"]
[PlyCount "78"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Bg5 Be7 7. Qd2 h6 8. Be3 d6 9. Be2 a6 10. f4 Qc7 11. Bf3 Bd7 12. 0-0-0 Rc8 13. g4 Na5 14. Qd3 Nc4 15. Bd2 b5 16. g5 hxg5 17. fxg5 b4 18. Nce2 Ne5 19. Qb3 Nxf3 20. gxf6 Nxd2 21. Rxd2 Bxf6 22. Nf3 Rh5 23. Rhd1 Rc5 24. Kb1 Bb5 25. Ne1 Qa5 26. c3 Bc4 27. cxb4 Bxb3 28. bxa5 Bxd1 29. Rxd1 Rxa5 30. Rxd6 Be5 31. Rd3 Bxh2 32. Rh3 Bd6 33. Nd3 Ke7 34. b4 Ra3 35. Nd4 Rac3 36. Ne2 R3c4 37. Rf3 Rxe4 38. Ndc1 g5 39. a3 g4 0-1

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1989.??.??"]
[Round "7"]
[White "Schermer, Anton"]
[Black "Van Beusekom, Leo"]
[Result "1-0"]
[ECO "A27"]
[PlyCount "89"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 d6 4. g3 f5 5. Bg2 e4 6. Ng1 Nf6 7. d3 exd3 8. exd3 Be7 9. Nge2 Be6 10. 0-0 Qd7 11. Re1 0-0 12. b3 Rae8 13. d4 Bf7 14. d5 Ne5 15. f4 Neg4 16. h3 Nh6 17. Nd4 Bd8 18. Be3 Re7 19. Qc2 Ne4 20. Nxe4 fxe4 21. g4 Nxg4 22. hxg4 Qxg4 23. Qe2 Qxe2 24. Nxe2 c6 25. Nc3 Ba5 26. Rec1 Rc8 27. Nxe4 cxd5 28. cxd5 Rce8 29. Nxd6 Rxe3 30. Nxe8 Rxe8 31. Rc4 Rd8 32. Rd1 b5 33. Rc6 Bh5 34. Rdc1 Bg4 35. R6c2 h5 36. Kh2 Bf5 37. Rc5 Bd2 38. Rd1 Bxf4+ 39. Kh1 a6 40. Bf3 g5 41. d6 Bg6 42. d7 g4 43. Rc8 Bg5 44. Rd5 Bf6 45. Rd6 1-0

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1989.??.??"]
[Round "5"]
[White "Van Beusekom, Leo"]
[Black "Bierenbroodspot, Paul"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "2275"]
[PlyCount "36"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. c4 c6 8. Qb3 0-0 9. 0-0 Re8 10. Nbd2 Nf6 11. Qc2 Bg4 12. b3 Na6 13. a3 Nc7 14. Bb2 Ne6 15. Ne5 Nxd4 16. Nxf7 Nxc2 17. Nxd8 Nxa1 18. Nxb7 Bf4 0-1

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1989.??.??"]
[Round "2"]
[White "Van Beusekom, Leo"]
[Black "Burggraaf, Jan Theodoor"]
[Result "0-1"]
[ECO "B06"]
[PlyCount "126"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 g6 2. d4 Bg7 3. e4 d6 4. h3 Nd7 5. Be3 a6 6. Bd3 b6 7. 0-0 Bb7 8. Re1 Ngf6 9. Nbd2 0-0 10. c4 c5 11. d5 Ne8 12. Qc2 Nc7 13. Rab1 a5 14. a3 a4 15. Nf1 Qb8 16. N3h2 Ba6 17. f4 b5 18. b3 Qa7 19. Nf3 axb3 20. Rxb3 bxc4 21. Bxc4 Bxc4 22. Qxc4 Nb6 23. Qc2 Qa6 24. Reb1 Nc4 25. Bc1 Qa4 26. Ne3 Nxe3 27. Bxe3 c4 28. Rc3 Bxc3 29. Qxc3 Nb5 30. Qb2 Qxa3 31. Bd4 Qxb2 32. Rxb2 Ra1+ 33. Kf2 Nxd4 34. Nxd4 Rfa8 35. Rc2 R8a2 36. Ke2 e5 37. dxe6 fxe6 38. Kd2 Rxc2+ 39. Nxc2 Ra2 40. Kc3 d5 41. exd5 exd5 42. Nb4 Rxg2 43. Nxd5 Rg3+ 44. Kxc4 Rxh3 45. Kd4 Rh1 46. Ke3 Kf7 47. Kf2 Ra1 48. Kf3 Ke6 49. Ne3 Ra3 50. Ke4 Rxe3+ 51. Kxe3 Kf5 52. Kf3 h5 53. Ke3 Kg4 54. f5 gxf5 55. Kf2 Kf4 56. Kg2 Ke3 57. Kf1 Kf3 58. Kg1 f4 59. Kf1 h4 60. Kg1 Ke2 61. Kg2 f3+ 62. Kh3 f2 63. Kh2 Kf3 0-1

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1989.??.??"]
[Round "4"]
[White "Van Beusekom, Leo"]
[Black "Wagenaar, J."]
[Result "1-0"]
[ECO "B41"]
[PlyCount "71"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Qc2 Nc6 7. Nxc6 bxc6 8. Bd2 Be7 9. Bd3 e5 10. Nc3 0-0 11. Ne2 Rb8 12. a3 Qb6 13. b4 d6 14. Be3 Qc7 15. 0-0 Ng4 16. Bd2 Qa7 17. h3 Nf6 18. Be3 Qb7 19. a4 Bd7 20. Rab1 d5 21. cxd5 cxd5 22. exd5 Rfc8 23. Bc5 Nxd5 24. Bxh7+ Kh8 25. Be4 Be6 26. Qd2 f5 27. Bxe7 fxe4 28. Bd6 Rd8 29. Bxb8 Qxb8 30. Rfd1 Rf8 31. Ng3 Nf4 32. Nxe4 Bf5 33. Qe3 Qb7 34. f3 Qc6 35. Qc5 Qe8 36. Rb2 1-0

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1989.??.??"]
[Round "3"]
[White "Vlaming, Jos Pl"]
[Black "Van Beusekom, Leo"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "63"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. Bxb5 axb5 12. Nxb5 Ra7 13. Nxa7 Nxa7 14. exf5 Bxf5 15. Qf3 Qg5 16. Nc7+ Kd8 17. Nd5 Bg7 18. Qa3 Nc8 19. Ne3 Be6 20. 0-0 e4 21. c4 Bd4 22. Nd5 Be5 23. f4 exf3 24. Qxf3 Qh4 25. Nf4 Bxc4 26. Qe4 Qg5 27. Qxc4 Rg8 28. g3 h5 29. Qxf7 Bd4+ 30. Kg2 Re8 31. Rae1 h4 32. Rxe8# 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "4"]
[White "Bosma, Bartele"]
[Black "Van Beusekom, Leo"]
[Result "0-1"]
[ECO "C57"]
[PlyCount "64"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nd4 6. c3 b5 7. Bf1 Nxd5 8. cxd4 Qxg5 9. Bxb5+ Bd7 10. Bxd7+ Kxd7 11. Qf3 exd4 12. 0-0 Be7 13. d3 Qe5 14. Bd2 c6 15. Re1 Qf6 16. Qg4+ Kc7 17. Ba5+ Nb6 18. Nd2 h5 19. Qd1 Kd7 20. Nc4 Nxc4 21. dxc4 Rhb8 22. Bc3 c5 23. Qa4+ Kd6 24. Rad1 Rb7 25. Qa3 Kc6 26. Ba5 Kd7 27. Qa4+ Kd6 28. b4 Rab8 29. bxc5+ Kxc5 30. Rc1 Rb2 31. Qa3+ Kc6 32. Qxe7 Qxf2+ 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "2"]
[White "De Groot, N."]
[Black "Van Beusekom, Leo"]
[Result "0-1"]
[ECO "B93"]
[PlyCount "58"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. Be2 g6 8. Be3 Bg7 9. 0-0 b5 10. a3 Bb7 11. Bf3 Nbd7 12. Qe1 0-0 13. Qg3 Nc5 14. Nd5 Ncxe4 15. Nxc7 Nxg3 16. Nxa8 Nxf1 17. Bxb7 Nxe3 18. Nc7 Nfd5 19. Ndxb5 Nxc7 20. Nxc7 Rb8 21. Bxa6 Rxb2 22. Bd3 Rb7 23. Re1 Rxc7 24. Rxe3 Bd4 25. Kf2 Ra7 26. Ke2 Bxe3 27. Kxe3 Rxa3 28. Kd4 Ra4+ 29. Bc4 e6 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "1"]
[White "Van Beusekom, Leo"]
[Black "Janssen, Coen"]
[Result "1-0"]
[ECO "C06"]
[PlyCount "65"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Ngf3 c5 6. c3 Nc6 7. Bd3 Qb6 8. Qb3 c4 9. Qxb6 Nxb6 10. Bc2 Be7 11. b3 0-0 12. 0-0 f6 13. Re1 fxe5 14. dxe5 Bd7 15. Bb2 Rac8 16. Rac1 cxb3 17. axb3 Be8 18. Nf1 Bh5 19. Bd1 Bxf3 20. Bxf3 Rf4 21. Ra1 a6 22. Bc1 Rff8 23. Be3 Nd7 24. Bg4 Nd8 25. Bd4 Bg5 26. f4 Be7 27. Ne3 Bc5 28. Nxd5 Bxd4+ 29. cxd4 exd5 30. Bxd7 Rc3 31. e6 Nc6 32. e7 Nxe7 33. Rxe7 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "3"]
[White "Van Beusekom, Leo"]
[Black "Keesman, Karel"]
[Result "0-1"]
[ECO "D60"]
[PlyCount "120"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nc3 Be7 7. Bd3 0-0 8. 0-0 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. Re1 Nxc3 12. bxc3 e5 13. e4 Kh8 14. a4 f6 15. d5 Nb6 16. Bb3 Bg4 17. h3 Bh5 18. Qd3 Rad8 19. c4 Qd6 20. Nh4 Bg6 21. Qg3 cxd5 22. cxd5 f5 23. exf5 Bf7 24. Qxe5 Qb4 25. Qg3 Nxd5 26. Bxd5 Bxd5 27. Qg5 Rde8 28. Red1 Bc6 29. g4 Qe4 30. f3 Qc2 31. Rd2 Qc3 32. Ng6+ hxg6 33. Qh4+ Kg8 34. fxg6 Qe3+ 35. Rf2 Qh6 36. Qxh6 gxh6 37. f4 Re4 38. f5 Kg7 39. Rb2 Rfe8 40. Rc1 Re2 41. Rxe2 Rxe2 42. Rc3 Re4 43. a5 a6 44. Kf2 h5 45. Re3 Rxe3 46. Kxe3 Bg2 47. gxh5 Bxh3 48. Kf4 Bf1 49. Kg5 Bd3 50. h6+ Kh8 51. g7+ Kh7 52. Kf6 Bc4 53. Kg5 Bd5 54. f6 Be6 55. f7 Bxf7 56. Kf6 Bd5 57. Kg5 b5 58. axb6 a5 59. Kf6 a4 60. Ke7 Kg8 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "5"]
[White "Van Beusekom, Leo"]
[Black "Van Eeten, D."]
[Result "0-1"]
[ECO "A53"]
[PlyCount "48"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nf3 b6 4. Nc3 Bb7 5. e3 c5 6. Bd3 e6 7. d5 exd5 8. cxd5 Nxd5 9. Bb5+ Nd7 10. Nxd5 Be7 11. e4 0-0 12. 0-0 Nf6 13. Re1 a6 14. Bd3 b5 15. Bg5 Nxd5 16. exd5 Bxg5 17. Nxg5 Qxg5 18. Be4 Rfe8 19. Qd3 h6 20. Re3 Rxe4 21. Rxe4 Bxd5 22. f3 Bxe4 23. Qxe4 d5 24. Qe2 d4 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "6"]
[White "Van der Sluijs, Lothar"]
[Black "Van Beusekom, Leo"]
[Result "0-1"]
[ECO "C99"]
[PlyCount "72"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 cxd4 11. cxd4 Qc7 12. Nbd2 0-0 13. h3 Nc6 14. d5 Nb4 15. Bb1 a5 16. a3 Na6 17. b4 Bb7 18. bxa5 Qxa5 19. Nb3 Qc7 20. Bb2 Nb8 21. Bd3 Qb6 22. Re2 Nh5 23. Rc2 Nf4 24. Bf1 f5 25. Bd3 Nxd3 26. Qxd3 fxe4 27. Qxe4 Ra4 28. Qe2 Bxd5 29. Nbd2 Qb7 30. Rac1 Na6 31. Qe3 Nc5 32. Re1 Ne6 33. Rec1 Bd8 34. Qc3 Bb6 35. Qd3 Nf4 36. Qxb5 Bxf2+ 0-1

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "5"]
[White "Ariese, Ruud"]
[Black "Van Beusekom, Leo"]
[Result "0-1"]
[ECO "B25"]
[PlyCount "80"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. d3 Bg7 6. f4 d6 7. Nf3 0-0 8. 0-0 Bd7 9. Rb1 Rc8 10. a3 Qc7 11. Ne2 Rfe8 12. Nh4 e6 13. f5 exf5 14. exf5 Ne7 15. fxg6 fxg6 16. Bg5 Ned5 17. Qd2 Rf8 18. c4 Ne7 19. Bh6 Bxh6 20. Qxh6 d5 21. Qg5 Qd6 22. Rbd1 b6 23. Nc3 Bc6 24. Bh3 Rcd8 25. Nf5 Nxf5 26. Bxf5 Bd7 27. Bxg6 hxg6 28. Qxg6+ Kh8 29. Qh6+ Kg8 30. Nxd5 Ne4 31. Qh4 Ba4 32. dxe4 Bxd1 33. Rxd1 Rde8 34. Qg5+ Kh7 35. Qh5+ Qh6 36. Nf6+ Rxf6 37. Rd7+ Kg8 38. Qxe8+ Rf8 39. Qe7 Qc1+ 40. Kg2 Qf1# 0-1

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "4"]
[White "Van Beusekom, Leo"]
[Black "Duijs, Peter"]
[Result "1-0"]
[ECO "E10"]
[PlyCount "63"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. g3 g6 5. Bg2 cxd4 6. Nxd4 Bg7 7. Nc3 0-0 8. e4 Nc6 9. 0-0 Nxd4 10. Qxd4 Ng4 11. Qd1 Ne5 12. c5 Qa5 13. Na4 Nc4 14. Rb1 b5 15. cxb6 axb6 16. b3 Qb4 17. Qc2 Na3 18. Bxa3 Qxa3 19. Nxb6 Qxa2 20. Qxa2 Rxa2 21. Rfd1 Ba6 22. Nxd7 Rc8 23. Bf1 Bxf1 24. Rxf1 Rcc2 25. e5 Bh6 26. Nf6+ Kg7 27. b4 Be3 28. Ne4 Bd4 29. b5 Bxe5 30. b6 Rab2 31. b7 Bb8 32. Nc5 1-0

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "2"]
[White "Van Beusekom, Leo"]
[Black "Ruiter, N."]
[Result "0-1"]
[ECO "E65"]
[PlyCount "72"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 d6 5. g3 0-0 6. Bg2 Nbd7 7. 0-0 c5 8. d5 Nb6 9. Nd2 Ng4 10. h3 Ne5 11. Qb3 f5 12. f4 Nf7 13. Nf3 Bd7 14. Re1 Qe8 15. Rb1 Qc8 16. Kh2 Qd8 17. e4 fxe4 18. Nxe4 h6 19. Qd3 Nh8 20. b3 Nc8 21. Bb2 Rb8 22. Bxg7 Kxg7 23. Rb2 Qa5 24. Qe3 b5 25. Nxc5 dxc5 26. Qe5+ Kg8 27. Qxb8 Nd6 28. Qxf8+ Kxf8 29. Rbe2 Nc8 30. Ne5 Ke8 31. cxb5 Bxb5 32. Nc6 Bxc6 33. dxc6 Qc7 34. Rd1 Nf7 35. Rd7 Qa5 36. Be4 Qa6 0-1

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "6"]
[White "Van Beusekom, Leo"]
[Black "Zweers, T."]
[Result "0-1"]
[ECO "B92"]
[PlyCount "86"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nf3 Be7 8. Be3 0-0 9. Nd5 Nxd5 10. Qxd5 Nd7 11. c4 Nf6 12. Qd3 Bd7 13. Rd1 Qa5+ 14. Bd2 Qxa2 15. Bc3 Qa4 16. 0-0 Qc6 17. Rfe1 Rfd8 18. Bf1 a5 19. b4 axb4 20. Bxb4 Bg4 21. Rc1 Ra4 22. Bd2 Rda8 23. Bc3 Ra3 24. Ra1 Rxa1 25. Bxa1 Nxe4 26. Bxe5 Nc5 27. Nd4 Nxd3 28. Nxc6 bxc6 29. Ra1 Rxa1 30. Bxa1 Nb4 31. Bc3 c5 32. h3 Bf5 33. Be2 Bd3 34. Kf1 Bxe2+ 35. Kxe2 f5 36. f4 Kf7 37. g3 g5 38. Bd2 h6 39. Kf3 Ke6 40. Ke2 gxf4 41. Bxf4 Bg5 42. h4 Bxf4 43. gxf4 d5 0-1

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "3"]
[White "Van Diepen, Peter"]
[Black "Van Beusekom, Leo"]
[Result "0-1"]
[ECO "D35"]
[PlyCount "62"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 0-0 6. cxd5 exd5 7. Bd3 Be6 8. Nge2 c6 9. Qc2 Nbd7 10. h3 h6 11. Bh4 Re8 12. f4 Nf8 13. g4 Rc8 14. f5 Bd7 15. Bg3 c5 16. Nf4 cxd4 17. exd4 Bc5+ 18. Be2 Bxd4 19. Qd3 Bxc3+ 20. bxc3 Qa5 21. 0-0 Rxc3 22. Be1 Rxd3 23. Bxa5 Rde3 24. Bd1 Ne4 25. Nxd5 Rxh3 26. f6 gxf6 27. Nxf6+ Nxf6 28. Rxf6 Kg7 29. Rf4 Bc6 30. Rc1 Ng6 31. Bc3+ Rxc3 0-1

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "1"]
[White "Veel, Elbert"]
[Black "Van Beusekom, Leo"]
[Result "1/2-1/2"]
[ECO "D32"]
[PlyCount "96"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 cxd4 5. Qxd4 Nc6 6. Qd1 exd5 7. Qxd5 Be6 8. Qxd8+ Rxd8 9. Bd2 Nf6 10. e3 Be7 11. Bb5 0-0 12. Bxc6 bxc6 13. Nf3 Rd6 14. 0-0 Rfd8 15. Nd4 Bc4 16. Rfd1 c5 17. Nf3 Bd3 18. Be1 Ba6 19. Rxd6 Rxd6 20. Rd1 Rxd1 21. Nxd1 Ne4 22. Nc3 Nxc3 23. Bxc3 Bc4 24. a4 a5 25. Nd2 Bd3 26. Bxa5 Bc2 27. b3 Kf8 28. Kf1 Ke8 29. Ke2 Kd7 30. Bc3 Bf8 31. a5 Kc6 32. Be5 g6 33. f3 Kb5 34. Bc7 Bg7 35. Bb6 Bc3 36. Ne4 Bb4 37. Nd6+ Ka6 38. Nxf7 Bxb3 39. Nd6 c4 40. Ne4 c3 41. Nc5+ Bxc5 42. Bxc5 Kxa5 43. Ba3 Bc4+ 44. Kd1 Bd3 45. e4 Kb5 46. e5 Bf5 47. g4 Be6 48. h3 h5 1/2-1/2

[Event "Alkmaar op-C"]
[Site "Alkmaar"]
[Date "1982.??.??"]
[Round "?"]
[White "Van der Bruinhorst, G."]
[Black "Van Beusekom, Leo"]
[Result "1-0"]
[ECO "C61"]
[PlyCount "43"]
[EventDate "1982.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. c3 Bc5 6. Qh5 Qe7 7. 0-0 Nf6 8. Qf3 0-0 9. d3 a6 10. Bc4 b5 11. e5 Qxe5 12. Qxa8 Ng4 13. g3 Nxf2 14. Qd5 Nh3+ 15. Kh1 bxc4 16. Qxe5 Bb7+ 17. Qe4 Bxe4+ 18. dxe4 Re8 19. Kg2 dxc3 20. Nxc3 Nf2 21. Rxf2 Bxf2 22. Kxf2 1-0

