[Event "BEL-chT 0001"]
[Site "Belgium"]
[Date "2001.02.04"]
[Round "8"]
[White "Weemaes, Ronald"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2295"]
[BlackElo "2350"]
[PlyCount "16"]
[EventDate "2000.11.18"]
[EventType "team"]
[EventRounds "13"]
[EventCountry "BEL"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. h3 Bh5 8. Be3 cxd4 1/2-1/2

[Event "BEL-chT 0001"]
[Site "Belgium"]
[Date "2001.01.14"]
[Round "12"]
[White "Den Boer, Ber"]
[Black "Motwani, Paul"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2350"]
[BlackElo "2464"]
[PlyCount "54"]
[EventDate "2000.11.18"]
[EventType "team"]
[EventRounds "13"]
[EventCountry "BEL"]
[SourceTitle "CBM 081 Extra"]
[Source "ChessBase"]
[SourceDate "2001.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2001.05.06"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 c5 3. g3 cxd4 4. Nxd4 Nc6 5. Bg2 Qb6 6. Nb3 d5 7. 0-0 Nf6 8. Be3 Qc7 9. Bf4 e5 10. Bg5 Ne4 11. Bxe4 dxe4 12. Nc3 f6 13. Bd2 Bh3 14. Re1 f5 15. Nd5 Qf7 16. c4 Bd6 17. Qc2 0-0 18. Rad1 Rae8 19. Bc3 Re6 20. c5 Bb8 21. f3 exf3 22. exf3 f4 23. Qe4 fxg3 24. hxg3 Rg6 25. Kf2 Bf5 26. Qe2 Bg4 27. Rd3 e4 0-1

[Event "BEL-chT 9900"]
[Site "Antwerp"]
[Date "2000.02.20"]
[Round "10"]
[White "Schebler, Gerhard"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2477"]
[BlackElo "2353"]
[PlyCount "123"]
[EventDate "1999.10.08"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "CBM 075 Extra"]
[Source "ChessBase"]
[SourceDate "2000.05.11"]
[SourceVersion "2"]
[SourceVersionDate "2000.05.11"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 d6 6. 0-0 g6 7. Be3 Bg7 8. Qd2 Nc6 9. Be2 Nf6 10. Nc3 0-0 11. Rad1 Ne8 12. f4 Qa5 13. Nb3 Qc7 14. f5 b5 15. fxe6 fxe6 16. Rxf8+ Bxf8 17. Rf1 Bg7 18. Bg5 Bd7 19. Kh1 Rc8 20. Qf4 Ne5 21. Bd3 Bc6 22. h3 Nf7 23. Bh4 Be5 24. Qg4 Ng7 25. Nd1 Bb7 26. Nd2 Re8 27. Nf3 d5 28. exd5 exd5 29. Nxe5 Nxe5 30. Bg3 Qe7 31. Bxe5 Qxe5 32. Qf3 Qc7 33. Nc3 Nh5 34. Kg1 Ng3 35. Nxd5 Qc5+ 36. Rf2 Bxd5 37. Qxg3 Rf8 38. Kf1 Bxa2 39. Rxf8+ Qxf8+ 40. Kg1 Bd5 41. Qe5 Qc5+ 42. Kh2 Qc6 43. Qb8+ Kg7 44. Qa7+ Kg8 45. Qb8+ Kg7 46. Qe5+ Kg8 47. Qg3 Qe6 48. b4 Kg7 49. Qc7+ Kg8 50. h4 Qf6 51. Qg3 Kg7 52. Qc7+ Kh6 53. Kg3 Qd4 54. Qe7 Bc4 55. Qf8+ Kh5 56. Qf3+ Kh6 57. Qf4+ Qxf4+ 58. Kxf4 Kh5 59. g3 h6 60. Bxc4 bxc4 61. c3 g5+ 62. Kf5 1-0

[Event "BEL-chT 9900"]
[Site "Antwerp"]
[Date "2000.01.09"]
[Round "7"]
[White "Schneider, Bernd"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "A38"]
[WhiteElo "2415"]
[BlackElo "2353"]
[PlyCount "40"]
[EventDate "1999.10.08"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "CBM 075 Extra"]
[Source "ChessBase"]
[SourceDate "2000.05.11"]
[SourceVersion "2"]
[SourceVersionDate "2000.05.11"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 g6 6. Nc2 Bg7 7. g3 0-0 8. Bg2 d6 9. 0-0 Be6 10. b3 Qd7 11. Bb2 Bh3 12. Rb1 a6 13. a4 Na5 14. Ba1 Bxg2 15. Kxg2 e6 16. e4 Rfd8 17. Ne3 Rac8 18. Qf3 h6 19. Ne2 Qe7 20. Nf4 Nc6 1/2-1/2

[Event "Ghent op 20th"]
[Site "Ghent"]
[Date "1997.??.??"]
[Round "8"]
[White "Den Boer, Ber"]
[Black "Lacrosse, Marc"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2350"]
[BlackElo "2300"]
[PlyCount "51"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Ne5 Nc6 8. Bxc6 bxc6 9. Nxc6 Qe8 10. Nxe7+ Qxe7 11. Qa4 a5 12. Qxc4 Ba6 13. Qc2 Rfd8 14. Rd1 Rab8 15. Nc3 Qb4 16. Bg5 Qxb2 17. Rac1 Qa3 18. Ne4 Nxe4 19. Bxd8 Rxd8 20. Qxe4 Qxa2 21. Qc2 Qxc2 22. Rxc2 Bb5 23. Ra1 a4 24. Rxc7 Bxe2 25. Rxa4 Bf3 26. Rac4 1-0

[Event "BEL-chT 9697"]
[Site "Belgium"]
[Date "1997.??.??"]
[Round "11"]
[White "Golubev, Mikhail"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2520"]
[BlackElo "2350"]
[PlyCount "119"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Bd3 Nc6 7. Be3 Nf6 8. 0-0 Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Qd2 0-0 12. Kh1 b5 13. f4 b4 14. Na4 Qa5 15. b3 Bb7 16. Rae1 Bc6 17. a3 Rab8 18. e5 Nd5 19. f5 exf5 20. Rxf5 Bxa4 21. bxa4 Ne7 22. Rf4 Qxa4 23. axb4 Ng6 24. Rfe4 Qc6 25. Ra1 Rb6 26. Ra5 d5 27. Re1 Rfb8 28. c3 Ne7 29. Rc5 Qe6 30. c4 Rd8 31. cxd5 Rxd5 32. Qc3 Rxc5 33. bxc5 Rb3 34. Qd4 Nc6 35. Qe4 Qg6 36. e6 fxe6 37. Qxc6 Rxd3 38. Qa8+ Kf7 39. Rf1+ Ke7 40. Qf8+ Kd7 41. h3 Kc6 42. Qc8+ Kd5 43. c6 Qe4 44. Qd7+ Ke5 45. Qxg7+ Kd5 46. Qd7+ Ke5 47. Qc7+ Kd5 48. Qa7 Rxh3+ 49. Kg1 Rc3 50. Rd1+ Kc4 51. Qxa6+ Kb3 52. Qb6+ Ka2 53. Rd2+ Ka3 54. Qa7+ Kb3 55. Qa2+ Kb4 56. Rb2+ Kc5 57. Qa5+ Kd4 58. Rb4+ Rc4 59. Rxc4+ Kxc4 60. Qa4+ 1-0

[Event "BEL-chT 9596"]
[Site "Belgium"]
[Date "1995.??.??"]
[Round "3"]
[White "Janssen, Han"]
[Black "Den Boer, Ber"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "2375"]
[BlackElo "2335"]
[PlyCount "126"]
[EventDate "1995.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 d6 6. 0-0 g6 7. Re1 Bg7 8. Bf1 Nf6 9. Bg5 h6 10. Bh4 0-0 11. Nd2 b5 12. a4 b4 13. Nc4 Bb7 14. Nb3 d5 15. Nca5 Qb6 16. e5 Ne4 17. Qd4 Qxd4 18. Nxd4 Ra7 19. f3 Nc5 20. Ndb3 Nxb3 21. cxb3 Ba8 22. Rac1 Re8 23. Bf2 Rd7 24. Bd4 Bf8 25. Rc2 Be7 26. Rec1 Bb7 27. Rc7 Rxc7 28. Rxc7 Bd8 29. Rxb7 Bxa5 30. Kf2 Nc6 31. Ke3 Nxd4 32. Kxd4 Ra8 33. f4 h5 34. Be2 Kg7 35. f5 gxf5 36. Bxh5 Ra7 37. Rb8 f6 38. exf6+ Kxf6 39. Rf8+ Ke7 40. Rf7+ Kd6 41. Rxa7 Bb6+ 42. Kd3 Bxa7 43. Bg6 Bf2 44. a5 Ke5 45. Be8 Kd6 46. Bg6 Ke7 47. Kc2 Kf6 48. Bh5 Bd4 49. Be2 Be5 50. h4 Bc7 51. Bxa6 Bxa5 52. h5 Kg5 53. Bc8 e5 54. h6 Bd8 55. Be6 d4 56. h7 Bf6 57. g3 e4 58. Kd2 Kg4 59. Ke2 d3+ 60. Ke3 Bxb2 61. Kd2 Bd4 62. Bc8 Kg5 63. Bd7 f4 0-1

[Event "BEL-chT 9596"]
[Site "Belgium"]
[Date "1995.??.??"]
[Round "?"]
[White "Le Quang, Kim"]
[Black "Den Boer, Ber"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "2235"]
[BlackElo "2335"]
[PlyCount "54"]
[EventDate "1995.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 d6 6. 0-0 g6 7. Be3 Bg7 8. Nc3 Nf6 9. Be2 0-0 10. a4 b6 11. Bf3 Nfd7 12. Qd2 Bb7 13. Rad1 Qc7 14. Bh6 Bxh6 15. Qxh6 Nc5 16. Rfe1 e5 17. Nb3 Nxb3 18. cxb3 Nc6 19. Be2 Nd4 20. Bc4 Kh8 21. Nd5 Bxd5 22. Bxd5 Rac8 23. h4 Qe7 24. Rd2 Rc5 25. Re3 f5 26. Rg3 fxe4 27. Rc3 Rf4 0-1

[Event "BEL-chT 9596"]
[Site "Belgium"]
[Date "1995.??.??"]
[Round "?"]
[White "Mauquoy, Alain"]
[Black "Den Boer, Ber"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "2205"]
[BlackElo "2335"]
[PlyCount "92"]
[EventDate "1995.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. Bg5 Be7 5. e3 0-0 6. Bd3 dxc4 7. Bxc4 c5 8. 0-0 cxd4 9. Nxd4 a6 10. Qf3 h6 11. Bh4 Nbd7 12. Bb3 Ne5 13. Qe2 Ng6 14. Bxf6 Bxf6 15. Rd1 Qa5 16. Na3 e5 17. Qh5 Ne7 18. Nf3 Bf5 19. Rac1 Bg6 20. Qg4 e4 21. Nd4 Bh5 22. Qxe4 Bxd1 23. Rxd1 b5 24. g3 Rad8 25. Rc1 Qd2 26. Rf1 Qxb2 27. Nac2 Qc3 28. Ne1 Bxd4 29. Qxe7 Bf6 30. Qe4 a5 31. Ng2 Qd3 32. Qf3 a4 33. Nf4 Qd6 34. Bc2 Be5 35. Rb1 Bxf4 36. gxf4 Qd5 37. Be4 Qc4 38. f5 Rd6 39. a3 Rfd8 40. Kg2 Rd2 41. f6 g6 42. Kg3 Kh7 43. Rb4 Qf1 44. Qf4 Qg1+ 45. Bg2 R8d5 46. h4 Rf5 0-1

[Event "Ghent op 16th"]
[Site "Ghent"]
[Date "1993.??.??"]
[Round "?"]
[White "Den Boer, Ber"]
[Black "Lin, Weiguo"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "2335"]
[BlackElo "2545"]
[PlyCount "63"]
[EventDate "1993.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c5 3. g3 cxd4 4. Nxd4 e5 5. Nb3 Nc6 6. Bg2 Be6 7. 0-0 Qd7 8. Nc3 0-0-0 9. e4 d4 10. Nd5 Nb4 11. f4 Nxd5 12. exd5 Bxd5 13. fxe5 Bxg2 14. Kxg2 f6 15. exf6 Nxf6 16. Qf3 Be7 17. Rd1 Rhf8 18. Rxd4 Nd5 19. Qe4 Bf6 20. Rc4+ Kb8 21. Nc5 Qd6 22. Bf4 Nxf4+ 23. gxf4 Rf7 24. Qf3 Re7 25. Rf1 Rde8 26. Rd1 Re2+ 27. Kh3 R2e3 28. Rxd6 Rxf3+ 29. Kg2 Rfe3 30. Nd7+ Ka8 31. Nxf6 gxf6 32. Rxf6 1-0

[Event "Ghent op 16th"]
[Site "Ghent"]
[Date "1993.??.??"]
[Round "?"]
[White "Roeder, Mathias"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "A44"]
[WhiteElo "2405"]
[BlackElo "2335"]
[PlyCount "97"]
[EventDate "1993.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 Be7 5. Nf3 a6 6. a4 Bg4 7. Be2 Bxf3 8. Bxf3 Bg5 9. Bxg5 Qxg5 10. a5 Qd8 11. Qd2 Ne7 12. Na4 Nd7 13. Bg4 Nf6 14. f3 Nxg4 15. fxg4 Ng6 16. Nb6 Rb8 17. 0-0 h5 18. Qf2 Nf4 19. gxh5 Qg5 20. Kh1 Qxh5 21. g3 Nh3 22. Qf5 Qxf5 23. Rxf5 f6 24. Kg2 Ke7 25. Re1 Rh6 26. Re2 Rbh8 27. Kf1 Nf4 28. gxf4 g6 29. fxe5 gxf5 30. exd6+ Kxd6 31. exf5 Rxh2 32. Re6+ Kc7 33. Re7+ Kb8 34. Nd7+ Ka7 35. Re2 Rh1+ 36. Kf2 R1h5 37. c4 Rxf5+ 38. Ke1 Rf4 39. b3 Rh1+ 40. Kd2 Ra1 41. Ke3 Rff1 42. Nxc5 Rxa5 43. d6 Rxc5 44. d7 Rd1 45. Rd2 Rxd2 46. Kxd2 b5 47. d8Q Rc6 48. c5 Kb7 49. b4 1-0

[Event "Ghent op 16th"]
[Site "Ghent"]
[Date "1993.??.??"]
[Round "?"]
[White "Schenning, Jop"]
[Black "Den Boer, Ber"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "2335"]
[PlyCount "48"]
[EventDate "1993.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nc6 3. Nf3 e6 4. Nc3 d5 5. Bb5 Be7 6. 0-0 Nf6 7. d3 0-0 8. Bxc6 bxc6 9. Qe1 c4 10. dxc4 Ba6 11. Ne5 Bb4 12. exd5 cxd5 13. a3 Bc5+ 14. Kh1 dxc4 15. Be3 Qc7 16. Bxc5 Qxc5 17. Rf3 Bb7 18. Rh3 Rad8 19. Rd1 Rxd1 20. Qxd1 Qf2 21. Rg3 Nh5 22. Rg4 Nxf4 23. Qg1 Nh3 24. Qd1 Qf5 0-1

[Event "Steinweg op 6th"]
[Site "Antwerp"]
[Date "1992.08.16"]
[Round "9"]
[White "Den Boer, Ber"]
[Black "Adamski, Andrzej"]
[Result "1-0"]
[ECO "E95"]
[WhiteElo "2335"]
[BlackElo "2315"]
[PlyCount "75"]
[EventDate "1992.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d6 3. c4 g6 4. Nc3 Bg7 5. e4 0-0 6. Be2 Nbd7 7. 0-0 e5 8. Re1 h6 9. h3 c6 10. Bf1 a5 11. Qc2 Nh7 12. dxe5 dxe5 13. Na4 b6 14. g3 f5 15. Nh4 Qf6 16. exf5 gxf5 17. Nxf5 Qxf5 18. Bd3 Qxh3 19. Bxh7+ Kh8 20. Be4 Nf6 21. Bg2 Qh5 22. Bxc6 Ng4 23. f3 e4 24. fxg4 Qxg4 25. Qg2 Bf5 26. Bxa8 Rxa8 27. Be3 Re8 28. Rad1 Qg6 29. Nxb6 Bg4 30. Nd5 Bf3 31. Qh2 Be5 32. Bd4 Bxd4+ 33. Rxd4 Rg8 34. Ne3 Rf8 35. c5 h5 36. Qh4 Rg8 37. Rd6 Qg7 38. Nf5 1-0

[Event "Steinweg op 6th"]
[Site "Antwerp"]
[Date "1992.08.11"]
[Round "4"]
[White "Dogge, Marc"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B41"]
[BlackElo "2335"]
[PlyCount "71"]
[EventDate "1992.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. c4 Nc6 7. Nxc6 dxc6 8. 0-0 e5 9. Nc3 Bc5 10. h3 Be6 11. Qe2 b5 12. Bg5 Bd4 13. Rac1 h6 14. Bh4 g5 15. Bg3 b4 16. Nd1 g4 17. Bh4 Rg8 18. Kh1 Rg6 19. Ne3 gxh3 20. g3 Qd7 21. Nf5 c5 22. Bxf6 Rxf6 23. Rcd1 Qc6 24. f3 Rg6 25. Kh2 Kd7 26. Nh4 Rg7 27. Nf5 Bxf5 28. exf5 Rag8 29. Be4 Qf6 30. g4 h5 31. Qc2 hxg4 32. Qa4+ Kc8 33. fxg4 Rxg4 34. Bc6 Qd8 35. Qxa6+ Kc7 36. Qb7+ 1-0

[Event "NED-chT"]
[Site "Netherlands"]
[Date "1992.??.??"]
[Round "?"]
[White "Bosboom, Manuel"]
[Black "Den Boer, Ber"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "2455"]
[BlackElo "2345"]
[PlyCount "106"]
[EventDate "1992.??.??"]
[EventType "team"]
[EventRounds "11"]
[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. d3 d5 4. Nbd2 Nc6 5. g3 g6 6. Bg2 Bg7 7. 0-0 Nge7 8. Re1 b6 9. exd5 Nxd5 10. Nc4 Bb7 11. c3 Qc7 12. Ng5 0-0 13. Qg4 Nf6 14. Qh4 h6 15. Ne4 Nxe4 16. Bxe4 Qd8 17. Qxd8 Raxd8 18. a4 Ba8 19. h3 Rfe8 20. Bf4 g5 21. Bd6 Rd7 22. g4 Red8 23. Bg3 Ne7 24. Re2 Bd5 25. Ne3 Bc6 26. Nc4 Bd5 27. Ne3 Bb7 28. a5 b5 29. a6 Bxe4 30. dxe4 Nc6 31. Rc1 Be5 32. Kg2 Kg7 33. b3 Rd3 34. Rec2 Kf6 35. Ra1 Bf4 36. Nf1 R8d6 37. Re1 Ke5 38. f3 Bxg3 39. Kxg3 Nb8 40. Ra1 Rd1 41. Rxd1 Rxd1 42. Ne3 Rd6 43. Rc1 Rxa6 44. b4 cxb4 45. cxb4 Kd4 46. Nc2+ Kc3 47. Ne1+ Kd2 48. Rc8 Nc6 49. Ng2 Nxb4 50. Rc7 Nd3 51. Rxf7 b4 52. Rb7 e5 53. h4 Rb6 0-1

[Event "Wch U26"]
[Site "Antwerp"]
[Date "1992.??.??"]
[Round "9"]
[White "Den Boer, Ber"]
[Black "Bossuyt, Koen"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2335"]
[PlyCount "75"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 030 Extra"]
[Source "ChessBase"]
[SourceDate "1992.11.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.11.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Be7 5. Bf4 0-0 6. e3 c6 7. Qc2 a6 8. c5 Nbd7 9. Bd3 b6 10. b4 Kh8 11. 0-0 Nh5 12. Rfe1 Nxf4 13. exf4 Nf6 14. Na4 bxc5 15. bxc5 a5 16. Nb6 Ra7 17. Ne5 Qc7 18. Qa4 Bb7 19. Re3 g6 20. Rae1 Nh5 21. g3 Kg8 22. Qd1 Ng7 23. g4 f6 24. Ned7 Qxf4 25. Nxf8 Bxf8 26. Qf3 Qxd4 27. Nd7 Be7 28. g5 fxg5 29. Rb1 Bc8 30. Ne5 Qf4 31. Rb8 Rc7 32. Ba6 Nf5 33. Qxf4 gxf4 34. Re1 Kg7 35. Rxc8 Rxc8 36. Bxc8 Nd4 37. Kf1 Bxc5 38. Nxc6 1-0

[Event "Wch U26"]
[Site "Antwerp"]
[Date "1992.??.??"]
[Round "8"]
[White "Den Boer, Ber"]
[Black "Claesen, Pieter"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "2335"]
[BlackElo "2230"]
[PlyCount "100"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 030 Extra"]
[Source "ChessBase"]
[SourceDate "1992.11.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.11.01"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 c6 3. d3 e5 4. Nf3 Bd6 5. Nbd2 Nf6 6. e4 0-0 7. 0-0 Re8 8. h3 a5 9. Re1 dxe4 10. dxe4 Bc5 11. c3 Qc7 12. Qc2 Nbd7 13. Nc4 b6 14. Ne3 Ba6 15. Nf5 Rad8 16. Bf1 Bxf1 17. Kxf1 b5 18. Kg2 h6 19. Nh2 Nf8 20. Qe2 Re6 21. Ng4 Nxg4 22. hxg4 Nh7 23. g5 hxg5 24. Qg4 g6 25. Bxg5 Nxg5 26. Qxg5 Be7 27. Qg4 Bf6 28. Rad1 Rxd1 29. Rxd1 Kf8 30. Ne3 Rd6 31. a4 Ke7 32. axb5 Rxd1 33. Qxd1 Bg5 34. bxc6 Bxe3 35. fxe3 Qxc6 36. Qd5 Qc7 37. Kf3 Kf6 38. Ke2 Kg5 39. c4 Kg4 40. Kf2 Qb8 41. Qd7+ f5 42. Qb5 Qh8 43. Qc6 Qh2+ 44. Kf1 f4 45. Ke1 Kf3 46. Kd1 Qe2+ 47. Kc1 Qxe3+ 48. Kd1 Qe2+ 49. Kc1 Qe1+ 50. Kc2 Qxe4+ 0-1

[Event "Wch U26"]
[Site "Antwerp"]
[Date "1992.??.??"]
[Round "3"]
[White "Den Boer, Ber"]
[Black "Maes, Wim"]
[Result "1/2-1/2"]
[ECO "D77"]
[WhiteElo "2335"]
[PlyCount "111"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 030 Extra"]
[Source "ChessBase"]
[SourceDate "1992.11.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.11.01"]
[SourceQuality "1"]

1. d4 Nf6 2. g3 g6 3. Bg2 Bg7 4. b3 0-0 5. Bb2 d5 6. Nf3 b6 7. c4 e6 8. 0-0 Bb7 9. Nbd2 c5 10. cxd5 exd5 11. Rc1 Nbd7 12. e3 Qe7 13. Re1 Rac8 14. Qe2 Rfd8 15. a4 Rc7 16. Rc2 Nf8 17. Rec1 Ne6 18. Ba3 Rdc8 19. h4 Qe8 20. Bh3 cxd4 21. Rxc7 Rxc7 22. Rxc7 Nxc7 23. Nxd4 Nd7 24. N2f3 Nc5 25. Bb2 N7e6 26. Nxe6 Nxe6 27. Bxe6 Qxe6 28. Bxg7 Kxg7 29. Qb2+ Kg8 30. Qe5 Qxe5 31. Nxe5 Kf8 32. Kf1 f6 33. Nf3 Ke7 34. Ke2 Kd6 35. Kd3 Kc5 36. Kc3 Bc8 37. b4+ Kd6 38. Nd4 Bd7 39. b5 Ke5 40. Nf3+ Ke4 41. Nd2+ Ke5 42. Nf3+ Ke4 43. Nd4 Ke5 44. f3 h6 45. Kd3 g5 46. f4+ Kd6 47. Kc3 Kc5 48. Kb3 Kd6 49. Kb4 Bc8 50. Nb3 Bd7 51. a5 gxh4 52. gxh4 Be8 53. a6 Bd7 54. Nd4 Bc8 55. Nb3 Bd7 56. Nd4 1/2-1/2

[Event "NED-chT"]
[Site "Netherlands"]
[Date "1992.??.??"]
[Round "?"]
[White "Den Boer, Ber"]
[Black "Speelman, Jonathan S"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "2345"]
[BlackElo "2630"]
[PlyCount "88"]
[EventDate "1992.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. Nc3 Bg4 5. d5 Nf6 6. g3 0-0 7. Bg2 c6 8. 0-0 Qc8 9. Re1 Re8 10. Bf4 Na6 11. Rc1 c5 12. e4 Nc7 13. Qd2 Nd7 14. Bh6 Bxf3 15. Bxf3 Bh8 16. Bg4 Rb8 17. a4 a6 18. Qe2 Qd8 19. Rcd1 b5 20. axb5 axb5 21. f4 Bd4+ 22. Kg2 bxc4 23. e5 dxe5 24. fxe5 Nb6 25. Rf1 Nbxd5 26. Qf3 Rxb2+ 27. Kh1 Nf6 28. exf6 exf6 29. Rb1 Rxb1 30. Rxb1 f5 31. Bh3 Qe7 32. Bd2 Ne6 33. Bf1 Ng5 34. Qd5 Rd8 35. Qc6 Be3 36. Be1 Bd2 37. Bxd2 Rxd2 38. Bg2 Kg7 39. Nd5 Qe5 40. Qxc5 Rxg2 41. Kxg2 Qe2+ 42. Qf2 Qe4+ 43. Kf1 Qxb1+ 44. Qe1 Qd3+ 0-1

[Event "Wch U26"]
[Site "Antwerp"]
[Date "1992.??.??"]
[Round "1"]
[White "Den Boer, Ber"]
[Black "Teran Alvarez, Ismael"]
[Result "1-0"]
[ECO "E95"]
[WhiteElo "2335"]
[PlyCount "89"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 030 Extra"]
[Source "ChessBase"]
[SourceDate "1992.11.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.11.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 Nbd7 7. 0-0 e5 8. Re1 exd4 9. Nxd4 Nc5 10. f3 c6 11. Be3 a5 12. Qd2 a4 13. Rad1 Nfd7 14. Kh1 Qa5 15. Bf4 Be5 16. Bh6 Re8 17. Nc2 Qb6 18. Ne3 Nf6 19. Nf1 Ne6 20. Be3 Qa5 21. Ng3 Nc5 22. Rb1 h5 23. Bf1 h4 24. Nge2 Nh5 25. Bg5 Ne6 26. Bxh4 g5 27. Bf2 Qd8 28. g3 Qf6 29. Bg2 Kg7 30. Kg1 Rh8 31. Be3 Nhf4 32. gxf4 gxf4 33. Bf2 Ng5 34. Nd4 Nh3+ 35. Bxh3 Bxh3 36. Nf5+ Kh7 37. Kh1 Rhg8 38. Rg1 Rg6 39. Bd4 Rag8 40. Rxg6 Rxg6 41. Rg1 Rxg1+ 42. Kxg1 Bxf5 43. Bxe5 dxe5 44. exf5 Qxf5 45. Ne4 1-0

[Event "Wch U26"]
[Site "Antwerp"]
[Date "1992.??.??"]
[Round "5"]
[White "Den Boer, Ber"]
[Black "Vega Holm, Fernando"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2335"]
[BlackElo "2320"]
[PlyCount "47"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 030 Extra"]
[Source "ChessBase"]
[SourceDate "1992.11.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.11.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 c5 8. Rb1 0-0 9. Be2 Nc6 10. d5 Ne5 11. Nxe5 Bxe5 12. Qd2 e6 13. f4 Bg7 14. c4 Re8 15. e5 f6 16. exf6 Bxf6 17. 0-0 exd5 18. cxd5 Bd4+ 19. Kh1 Qxd5 20. Bf3 Qd6 21. Bb2 Bf5 22. Rbd1 Rad8 23. Bxd4 cxd4 24. Bxb7 1/2-1/2

[Event "Wch U26"]
[Site "Antwerp"]
[Date "1992.??.??"]
[Round "2"]
[White "Gechkov, A."]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "A44"]
[BlackElo "2335"]
[PlyCount "59"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 030 Extra"]
[Source "ChessBase"]
[SourceDate "1992.11.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.11.01"]
[SourceQuality "1"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 Be7 5. Nf3 a6 6. h3 b5 7. a4 b4 8. Nb1 f5 9. exf5 Bxf5 10. Bc4 e4 11. Ng5 Bxg5 12. Qh5+ Bg6 13. Qxg5 Ne7 14. h4 0-0 15. h5 h6 16. Qh4 Bh7 17. Bf4 Qd7 18. Nd2 Nf5 19. Qh2 Nd4 20. 0-0 Qg4 21. Bxd6 Rc8 22. Qf4 Ne2+ 23. Bxe2 Qxe2 24. Rad1 Nd7 25. Rfe1 Qxh5 26. Nxe4 Bxe4 27. Qxe4 Re8 28. Qd3 Nf6 29. Rxe8+ Rxe8 30. f3 1-0

[Event "Wch U26"]
[Site "Antwerp"]
[Date "1992.??.??"]
[Round "4"]
[White "Geselschap, Jock"]
[Black "Den Boer, Ber"]
[Result "0-1"]
[ECO "D93"]
[WhiteElo "2285"]
[BlackElo "2335"]
[PlyCount "75"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 030 Extra"]
[Source "ChessBase"]
[SourceDate "1992.11.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.11.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Bf4 c6 6. e3 0-0 7. Qb3 e6 8. Be2 h6 9. 0-0 Nbd7 10. Rad1 Re8 11. h3 b6 12. Bd3 Bb7 13. e4 c5 14. cxd5 exd5 15. exd5 cxd4 16. Nxd4 Nc5 17. Qc4 Nxd5 18. Ndb5 Nxf4 19. Qxf4 Be5 20. Qc4 Qg5 21. Qg4 Qxg4 22. hxg4 a6 23. Na3 b5 24. Nc2 Rad8 25. Nb4 Rd4 26. a3 Rxg4 27. f3 Rh4 28. g4 Bd4+ 29. Kg2 Rxg4+ 30. Kh3 Rg5 31. Be4 Bxc3 32. Bxb7 Bxb4 33. Bc6 Rc8 34. axb4 Rxc6 35. bxc5 Rcxc5 36. Rd7 Rc2 37. Re1 Rcg2 38. Re3 0-1

[Event "Wch U26"]
[Site "Antwerp"]
[Date "1992.??.??"]
[Round "7"]
[White "Ninov, Nikolai"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B41"]
[WhiteElo "2370"]
[BlackElo "2335"]
[PlyCount "63"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 030 Extra"]
[Source "ChessBase"]
[SourceDate "1992.11.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.11.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 d6 6. Nc3 g6 7. Be2 Bg7 8. 0-0 Nf6 9. Be3 0-0 10. Qd2 b6 11. Rfd1 Bb7 12. f3 Qc7 13. Rac1 Nbd7 14. b4 Rac8 15. Nb3 Ne8 16. c5 bxc5 17. bxc5 Nxc5 18. Nxc5 dxc5 19. Na4 Nf6 20. Nxc5 Rfd8 21. Qe1 Rxd1 22. Qxd1 Qe7 23. Qb3 Bh6 24. Bxh6 Rxc5 25. Rxc5 Qxc5+ 26. Kf1 Qc8 27. Qb4 Nd7 28. Qe7 a5 29. Kf2 Bc6 30. h4 Qb8 31. a3 Kh8 32. Qxf7 1-0

[Event "Wch U26"]
[Site "Antwerp"]
[Date "1992.??.??"]
[Round "6"]
[White "Womacka, Mathias"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2445"]
[BlackElo "2335"]
[PlyCount "125"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 030 Extra"]
[Source "ChessBase"]
[SourceDate "1992.11.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.11.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. 0-0 d6 7. c4 g6 8. Nc3 Bg7 9. Bg5 0-0 10. Qd2 b6 11. Rad1 Bb7 12. Nf3 Qc7 13. Rfe1 Nc6 14. Bf1 Ne8 15. Qf4 f6 16. Bh4 g5 17. Qg4 Qf7 18. Nxg5 fxg5 19. Qxg5 Kh8 20. Qe3 Qc7 21. Na4 Rb8 22. Qxb6 Qxb6 23. Nxb6 Rf7 24. Na4 Bd4 25. Rc1 Nf6 26. c5 Ng4 27. Re2 Rbf8 28. Rcc2 Nb4 29. Rc4 Bxf2+ 30. Rxf2 Nxf2 31. Rxb4 dxc5 32. Rb6 Nxe4 33. Be2 Nd2 34. h3 Rg7 35. g4 Bf3 36. Rxe6 Bxe2 37. Bf6 Bc4 38. Bxg7+ Kxg7 39. Re7+ Rf7 40. Rxf7+ Kxf7 41. Nxc5 Ke7 42. Kf2 Kd6 43. b4 Ke5 44. Ke3 Nb1 45. Nd7+ Kd6 46. Nf6 h6 47. a4 Bb3 48. Ne4+ Ke5 49. Nc5 Bc4 50. Nd7+ Ke6 51. Nc5+ Kd5 52. Nd7 Bf1 53. h4 Nc3 54. g5 hxg5 55. hxg5 Kd6 56. Nf6 Ke5 57. Nd7+ Kd6 58. Nf6 Ke6 59. b5 a5 60. Ne4 Nxa4 61. Nd2 Bxb5 62. Nb3 Nc3 63. Nxa5 1/2-1/2

[Event "Steinweg op 5th"]
[Site "Antwerp"]
[Date "1991.08.16"]
[Round "7"]
[White "San Marco, Bruno"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2250"]
[BlackElo "2350"]
[PlyCount "93"]
[EventDate "1991.08.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Nc6 6. Be2 e6 7. 0-0 Be7 8. Be3 cxd4 9. cxd4 0-0 10. Nc3 Qd8 11. Ne5 Nb4 12. Qb3 Nbd5 13. Bf3 Nxc3 14. bxc3 Nd5 15. Bd2 a5 16. c4 Nf6 17. Be3 a4 18. Qc2 Nd7 19. Nxd7 Qxd7 20. Rfd1 Qc7 21. g3 Ra5 22. Rab1 b5 23. Bd2 Ra7 24. Rxb5 Bd7 25. Bf4 Bd6 26. Rc5 Qb6 27. Rb1 Qa6 28. Bxd6 Qxd6 29. Qd2 Rd8 30. Ra5 Rc7 31. c5 Qe7 32. Qf4 Be8 33. Ra8 Rxa8 34. Bxa8 e5 35. dxe5 Rxc5 36. Rb8 a3 37. Qa4 Kf8 38. Bc6 Rxc6 39. Qxc6 Qxe5 40. Qa8 f6 41. Qxa3+ Kf7 42. Rb7+ Kg8 43. Qe7 Qa1+ 44. Kg2 Bc6+ 45. f3 Bxf3+ 46. Kxf3 Qf1+ 47. Ke3 1-0

[Event "Malaga op"]
[Site "Malaga"]
[Date "1991.??.??"]
[Round "8"]
[White "Den Boer, Ber"]
[Black "Hoffman, Alejandro"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2310"]
[BlackElo "2415"]
[PlyCount "50"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. c4 c6 7. Qc2 b6 8. b3 Bb7 9. Bb2 Nbd7 10. Rd1 Rc8 11. Nc3 Qc7 12. Rac1 Qb8 13. e4 Rfd8 14. e5 Ne8 15. cxd5 cxd5 16. Bf1 Nf8 17. Bd3 Rc7 18. Qd2 Rdc8 19. Nb5 Rxc1 20. Rxc1 a6 21. Ba3 Bxa3 22. Nxa3 Rxc1+ 23. Qxc1 Qc7 24. Qd2 f6 25. Nc2 Qe7 1/2-1/2

[Event "Malaga op"]
[Site "Malaga"]
[Date "1991.??.??"]
[Round "3"]
[White "Giorgadze, Tamaz"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2525"]
[BlackElo "2310"]
[PlyCount "48"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nb6 6. b3 Bg7 7. Bb2 0-0 8. Nf3 Nc6 9. 0-0 a5 10. d3 h6 11. a3 Be6 12. Nd2 Nd5 13. Na4 Bxb2 14. Nxb2 Nc3 15. Qe1 Nd4 16. Bf3 Bh3 17. Rc1 Nxf3+ 18. Nxf3 Nd5 19. Qd2 Bxf1 20. Qxh6 Bxe2 21. Rc4 Bxf3 22. Rh4 Bh5 23. Rxh5 gxh5 24. Qg5+ Kh7 1/2-1/2

[Event "Ostend op"]
[Site "Ostend"]
[Date "1991.??.??"]
[Round "6"]
[White "Psakhis, Lev"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "2575"]
[BlackElo "2350"]
[PlyCount "93"]
[EventDate "1991.09.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 026 Extra"]
[Source "ChessBase"]
[SourceDate "1992.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 a6 6. Nd6+ Bxd6 7. Qxd6 Qe7 8. Qxe7+ Ngxe7 9. Nc3 d5 10. a3 0-0 11. Bg5 d4 12. Na4 e5 13. Nb6 Rb8 14. Bc4 h6 15. Bd2 Bg4 16. h3 Nc8 17. hxg4 Nxb6 18. Ba2 Rbc8 19. 0-0-0 Ne7 20. g5 hxg5 21. Bxg5 Ng6 22. Rh3 Nc4 23. Kb1 b5 24. c3 dxc3 25. Rxc3 Rc6 26. Bxc4 bxc4 27. Rdc1 Rfc8 28. b3 Rb8 29. Kb2 Rcb6 30. b4 a5 31. Rxc4 axb4 32. Rc8+ Rxc8 33. Rxc8+ Kh7 34. a4 Nf4 35. Bxf4 exf4 36. Kb3 Rd6 37. a5 Rd3+ 38. Kxb4 Rd2 39. Kb3 Rxf2 40. a6 f3 41. gxf3 Rxf3+ 42. Kb4 Re3 43. a7 Rxe4+ 44. Kc5 Ra4 45. a8Q Rxa8 46. Rxa8 Kg6 47. Kd4 1-0

[Event "Ostend op"]
[Site "Ostend"]
[Date "1991.??.??"]
[Round "3"]
[White "Schmittdiel, Eckhard"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2490"]
[BlackElo "2350"]
[PlyCount "89"]
[EventDate "1991.09.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 026 Extra"]
[Source "ChessBase"]
[SourceDate "1992.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.03.01"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 g6 4. g3 Bg7 5. Bg2 c5 6. 0-0 0-0 7. e3 Nc6 8. d4 cxd4 9. exd4 Bg4 10. h3 Bf5 11. g4 Be4 12. Nbd2 Rc8 13. a3 Qb6 14. Re1 e6 15. Rc1 Rfd8 16. Bf1 h6 17. b4 a6 18. Nb3 Bxf3 19. Qxf3 Ne4 20. Qe3 e5 21. Rcd1 exd4 22. Nxd4 Ne5 23. Ba1 Re8 24. Bg2 Nc4 25. Qd3 Ne5 26. Qb3 Nc4 27. Re2 Kh7 28. h4 Qd6 29. Nf3 Bxa1 30. Rxa1 Qf4 31. Rd1 Nb6 32. Rde1 Qxg4 33. Rxe4 dxe4 34. Qxf7+ Kh8 35. Ne5 Rxe5 36. Qf6+ Kh7 37. Qxe5 Qxh4 38. Rxe4 Qg5 39. Qe7+ Qxe7 40. Rxe7+ Kh8 41. Rxb7 Nc4 42. a4 a5 43. bxa5 Nxa5 44. Rb5 Nc4 45. a5 1-0

[Event "Berliner Sommer 09th"]
[Site "Berlin"]
[Date "1991.??.??"]
[Round "?"]
[White "Tischbierek, Raj"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2480"]
[BlackElo "2350"]
[PlyCount "69"]
[EventDate "1991.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 a6 6. Be2 Qc7 7. 0-0 Nf6 8. Kh1 Be7 9. f4 d6 10. Be3 0-0 11. a4 Bd7 12. Nb3 b6 13. Bf3 Rab8 14. Qe2 Na5 15. Nd2 b5 16. axb5 axb5 17. e5 Ne8 18. Qf2 Nc6 19. Qg3 b4 20. Nce4 d5 21. Nc5 Bc8 22. Nd3 Qd8 23. Qh3 g6 24. g4 f6 25. Bg2 Ng7 26. exf6 Bxf6 27. Bc5 Be7 28. Bxe7 Qxe7 29. Nf3 Qc7 30. Ng5 h5 31. f5 gxf5 32. gxf5 Nxf5 33. Qxh5 Qg7 34. Rg1 Nce7 35. Bf3 1-0

[Event "Ostend op"]
[Site "Ostend"]
[Date "1991.??.??"]
[Round "9"]
[White "Tischbierek, Raj"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteElo "2480"]
[BlackElo "2350"]
[PlyCount "86"]
[EventDate "1991.09.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 026 Extra"]
[Source "ChessBase"]
[SourceDate "1992.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1992.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. 0-0 d6 8. Kh1 Nc6 9. Be3 g6 10. f4 Bg7 11. Nf3 0-0 12. Qe1 b5 13. Qh4 Re8 14. e5 Nd5 15. Nxd5 exd5 16. f5 gxf5 17. exd6 Qxd6 18. Bf4 Qf6 19. Bg5 Qxb2 20. Rab1 Qa3 21. Bf6 Qd6 22. Bxg7 Kxg7 23. Ng5 h6 24. Bxf5 Ne5 25. Nh3 Ng6 26. Qd4+ Qe5 27. Qd3 Bxf5 28. Rxf5 Qe4 29. Rbf1 Ra7 30. Qd1 Rc7 31. c3 Re5 32. R5f3 a5 33. Nf4 Rce7 34. Nd3 Rh5 35. h3 Qc4 36. Qd2 Rh4 37. Qf2 Qc7 38. Rg3 Rhe4 39. Nf4 Qe5 40. Nxg6 fxg6 41. Qf8+ Kh7 42. Rf7+ Rxf7 43. Qxf7+ Qg7 1/2-1/2

[Event "Steinweg op 4th"]
[Site "Antwerp"]
[Date "1990.08.17"]
[Round "7"]
[White "Den Boer, Ber"]
[Black "Rozentalis, Eduardas"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2300"]
[BlackElo "2565"]
[PlyCount "86"]
[EventDate "1990.08.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. g3 Nc6 6. Bg2 Bxd2+ 7. Nbxd2 d6 8. e4 e5 9. d5 Nb8 10. b4 0-0 11. 0-0 Bg4 12. Qc2 c6 13. Rfe1 Rc8 14. Qd3 a5 15. dxc6 Nxc6 16. b5 Nd8 17. Nh4 g6 18. Nf1 Ne6 19. Ne3 Nc5 20. Qc2 Be6 21. Nd5 Bxd5 22. exd5 Ncd7 23. Qd3 Rc7 24. Rac1 Rac8 25. Bh3 Re8 26. Qe3 Qd8 27. Qa3 Nc5 28. Re2 Rce7 29. Rce1 e4 30. Qc3 Re5 31. f4 exf3 32. Rxe5 f2+ 33. Kg2 fxe1R 34. Rxe1 Rxe1 35. Qxe1 Nfe4 36. Qf1 Qg5 37. Qe2 Qd2 38. Bg4 Qxe2+ 39. Bxe2 Nc3 40. Kf2 Nxa2 41. Nf3 a4 42. Ke3 Nc1 43. Nd4 a3 0-1

[Event "Steinweg op 4th"]
[Site "Antwerp"]
[Date "1990.08.14"]
[Round "4"]
[White "Den Boer, Ber"]
[Black "Boudre, Jean Pierre"]
[Result "1-0"]
[ECO "A70"]
[WhiteElo "2300"]
[BlackElo "2385"]
[PlyCount "123"]
[EventDate "1990.08.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. h3 Bg7 8. e4 a6 9. a4 0-0 10. Bd3 Re8 11. 0-0 Nbd7 12. Bf4 Nh5 13. Bg5 Bf6 14. Be3 Ne5 15. Be2 Nxf3+ 16. Bxf3 Ng7 17. Qd2 b6 18. g4 Ra7 19. Ne2 Bh4 20. Bg2 f5 21. exf5 gxf5 22. g5 Rae7 23. Nc3 Bd7 24. Rae1 Nh5 25. Qd1 Ng3 26. fxg3 Bxg3 27. Bf2 Bxf2+ 28. Kxf2 Rxe1 29. Rxe1 Qxg5 30. Rxe8+ Bxe8 31. Qe2 Bd7 32. Qe3 f4 33. Qf3 Kg7 34. Ne2 Bxa4 35. Nxf4 Bd7 36. Qe3 Qf6 37. Kg1 Kf8 38. Nh5 Qxb2 39. Qf4+ Ke7 40. Qe4+ Kd8 41. Qxh7 Qd4+ 42. Kh2 a5 43. Ng3 a4 44. Qg8+ Kc7 45. Qa8 c4 46. Ne4 Qe5+ 47. Kg1 Qd4+ 48. Kh1 Qa1+ 49. Kh2 Qe5+ 50. Kg1 Qd4+ 51. Kf1 Qa1+ 52. Kf2 Qb2+ 53. Kg3 Qb4 54. Qa7+ Kc8 55. Kh2 a3 56. Nf6 Qa4 57. Qxb6 a2 58. Ne4 Bg4 59. Nc3 Bd7 60. Nxa4 a1Q 61. Nb2 Qc1 62. Qa6+ 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "1990.??.??"]
[Round "4"]
[White "Bosch, Jeroen"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2245"]
[BlackElo "2300"]
[PlyCount "26"]
[EventDate "1990.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 019 Extra"]
[Source "ChessBase"]
[SourceDate "1991.01.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.01.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qe2 Nc6 8. Be3 Bxe3 9. Qxe3 Nf6 10. c4 Qc7 11. Nc3 0-0 12. Be2 d6 13. 0-0 Bd7 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "1990.??.??"]
[Round "2"]
[White "Den Boer, Ber"]
[Black "Bottema, Tom"]
[Result "0-1"]
[ECO "A90"]
[WhiteElo "2300"]
[BlackElo "2205"]
[PlyCount "50"]
[EventDate "1990.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 019 Extra"]
[Source "ChessBase"]
[SourceDate "1991.01.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.01.01"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 d5 5. Nf3 c6 6. Nc3 Bd6 7. Bf4 0-0 8. Qc2 Qe7 9. 0-0-0 Bd7 10. Bxd6 Qxd6 11. Ne5 Be8 12. h3 Ne4 13. Bxe4 fxe4 14. f4 exf3 15. exf3 Nd7 16. Nxd7 Qxd7 17. f4 b5 18. c5 b4 19. Nb1 Bg6 20. Qe2 e5 21. Qxe5 Rae8 22. Qg5 Qe6 23. f5 Rxf5 24. Qd2 Rf2 25. Qxf2 Qe4 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "1990.??.??"]
[Round "3"]
[White "Den Boer, Ber"]
[Black "De Vries, Eelco"]
[Result "0-1"]
[ECO "E63"]
[WhiteElo "2300"]
[PlyCount "92"]
[EventDate "1990.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 019 Extra"]
[Source "ChessBase"]
[SourceDate "1991.01.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.01.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 d6 6. 0-0 a6 7. Nc3 Nc6 8. h3 Rb8 9. e4 b5 10. e5 Nd7 11. e6 fxe6 12. d5 Nce5 13. Nd4 Nb6 14. cxb5 Nxd5 15. Nxd5 exd5 16. f4 c5 17. bxc6 Nf7 18. Kh2 e5 19. Nb3 d4 20. Bd2 Qe7 21. Ba5 Kh8 22. c7 Rxb3 23. axb3 e4 24. Bb6 d3 25. Re1 d5 26. Rc1 Re8 27. Bc5 Qd7 28. Qd2 Nh6 29. g4 Ng8 30. Bf2 Ne7 31. Rc5 Nc6 32. Be3 Nd4 33. Bxd4 Bxd4 34. Qb4 Bxc5 35. Qxc5 Bb7 36. Qb6 Qc6 37. Qd4+ Kg8 38. Qc3 Qxc3 39. bxc3 d2 40. Rd1 e3 41. Bf3 Rc8 42. c4 Rxc7 43. cxd5 Rc1 44. d6 Kf8 45. Be2 Bd5 46. d7 Ke7 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "1990.??.??"]
[Round "9"]
[White "Den Boer, Ber"]
[Black "Dekker, Andries"]
[Result "1/2-1/2"]
[ECO "D43"]
[WhiteElo "2300"]
[BlackElo "2240"]
[PlyCount "45"]
[EventDate "1990.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 019 Extra"]
[Source "ChessBase"]
[SourceDate "1991.01.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.01.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 h6 6. Bxf6 Qxf6 7. Rc1 Nd7 8. e3 Bd6 9. Bd3 Qe7 10. 0-0 0-0 11. Bb1 Rd8 12. Qd3 Nf8 13. e4 dxe4 14. Qxe4 b6 15. Ne5 Bxe5 16. dxe5 Bb7 17. Qf4 c5 18. Nb5 Qg5 19. Qxg5 hxg5 20. Rcd1 Nd7 21. Nd6 Bc6 22. Rfe1 Kf8 23. f3 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "1990.??.??"]
[Round "7"]
[White "Den Boer, Ber"]
[Black "Jonker, Marc"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2300"]
[BlackElo "2215"]
[PlyCount "65"]
[EventDate "1990.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 019 Extra"]
[Source "ChessBase"]
[SourceDate "1991.01.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.01.01"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. b3 exd4 4. Qxd4 Nf6 5. Bb2 Nc6 6. Qd2 g6 7. Nc3 Bg7 8. g3 0-0 9. Bg2 Re8 10. Nf3 Bf5 11. Nh4 Bd7 12. 0-0 a5 13. h3 Qc8 14. Kh2 Nb4 15. e4 Na6 16. Rae1 Nc5 17. f4 Bc6 18. e5 Nfd7 19. exd6 cxd6 20. Qxd6 a4 21. b4 a3 22. Ba1 Na4 23. Nd5 Bxd5 24. Qxd5 Bxa1 25. Rxe8+ Qxe8 26. Rxa1 Rd8 27. Qxb7 Rb8 28. Qf3 Rxb4 29. Qxa3 Rxc4 30. Qb3 Qe2 31. Re1 Qc2 32. Re4 Qxb3 33. Re8+ 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "1990.??.??"]
[Round "5"]
[White "Den Boer, Ber"]
[Black "Markus, John Raymond"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2300"]
[BlackElo "2265"]
[PlyCount "81"]
[EventDate "1990.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 019 Extra"]
[Source "ChessBase"]
[SourceDate "1991.01.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.01.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. f3 g6 6. e4 d6 7. Nc3 Bg7 8. Be3 0-0 9. a4 Nbd7 10. Nh3 axb5 11. Bxb5 Nb6 12. Nf4 Ba6 13. 0-0 Bxb5 14. axb5 Nc4 15. Rxa8 Qxa8 16. Bc1 Nd7 17. Nfe2 Qa5 18. Qc2 Qb4 19. Bg5 Ra8 20. Rb1 Bd4+ 21. Nxd4 cxd4 22. Ne2 f6 23. Bh4 Qc5 24. Qd3 Nde5 25. Qxd4 Qxb5 26. Qc3 Na3 27. Re1 Nac4 28. f4 Nd7 29. Nd4 Qa6 30. Nc6 Kf7 31. Qh3 Nf8 32. b3 Nb2 33. e5 Nd3 34. e6+ Ke8 35. Rf1 Qb6+ 36. Kh1 Nxf4 37. Qf3 Nh5 38. g4 Ng7 39. Bxf6 Ngxe6 40. Bxe7 Kd7 41. Bxf8 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "1990.??.??"]
[Round "8"]
[White "Johansson, Jan"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2460"]
[BlackElo "2300"]
[PlyCount "75"]
[EventDate "1990.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 019 Extra"]
[Source "ChessBase"]
[SourceDate "1991.01.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.01.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bg4 6. h3 Bh5 7. g4 Bg6 8. Ne5 e6 9. Nc4 Qa6 10. h4 Qc6 11. Rh3 Bb4 12. h5 Be4 13. Bd2 Bxc3 14. Rxc3 Qd7 15. f3 Bc6 16. Bg5 Nd5 17. Ra3 f6 18. Bh4 b5 19. Ne3 b4 20. Rd3 Bb5 21. Nxd5 Bxd3 22. Nxf6+ gxf6 23. Bxd3 0-0 24. Be4 c6 25. Qd2 Na6 26. 0-0-0 Kh8 27. g5 f5 28. Bd3 Nc7 29. Bg3 Nd5 30. Be5+ Kg8 31. g6 hxg6 32. hxg6 Nf6 33. Qg5 Qg7 34. Bc4 Rae8 35. Rh1 Re7 36. Rh7 Nxh7 37. gxh7+ Kxh7 38. Bxg7 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "1990.??.??"]
[Round "1"]
[White "Kirov, Nino"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "D77"]
[WhiteElo "2475"]
[BlackElo "2300"]
[PlyCount "77"]
[EventDate "1990.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 019 Extra"]
[Source "ChessBase"]
[SourceDate "1991.01.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.01.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. c4 0-0 5. d4 d5 6. 0-0 dxc4 7. Na3 c3 8. bxc3 c5 9. Bb2 Nc6 10. e3 a6 11. Qe2 e5 12. Nxe5 Nxe5 13. dxe5 Ng4 14. f4 f6 15. h3 Nh6 16. exf6 Qxf6 17. g4 Qe7 18. Nc4 Be6 19. Nb6 Rae8 20. c4 Kh8 21. Rab1 Bg8 22. Bxg7+ Qxg7 23. Na4 Qd4 24. exd4 Rxe2 25. dxc5 Bxc4 26. Rfc1 Bxa2 27. Ra1 Bb3 28. Nc3 Rd2 29. Bxb7 Rxf4 30. c6 Rc4 31. Ra3 Nxg4 32. Rxb3 Ne5 33. Rf1 Rd3 34. Bxa6 Rcxc3 35. Rb8+ Kg7 36. Bxd3 Nxd3 37. Rb7+ Kh6 38. c7 Ne5 39. Rf8 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "1990.??.??"]
[Round "6"]
[White "Van Gisbergen, Stan"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "E41"]
[BlackElo "2300"]
[PlyCount "120"]
[EventDate "1990.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 019 Extra"]
[Source "ChessBase"]
[SourceDate "1991.01.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.01.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Bxc3+ 6. bxc3 d6 7. Ne2 e5 8. e4 Nc6 9. d5 Ne7 10. Ng3 h6 11. Nh5 Nxh5 12. Qxh5 Ng6 13. g3 Qd7 14. f4 exf4 15. gxf4 Qg4 16. Qxg4 Bxg4 17. Rg1 Bh5 18. Kf2 0-0-0 19. Bd2 Rhg8 20. Rg3 Nf8 21. Rag1 g6 22. e5 dxe5 23. fxe5 Nd7 24. Re1 Rde8 25. Rge3 Re7 26. e6 Nf6 27. h3 Rf8 28. Kg2 Nh7 29. Re5 fxe6 30. dxe6 Bf3+ 31. Kg1 Rd8 32. R1e3 Bc6 33. Rxc5 Ng5 34. Be1 Rxe6 35. Rxe6 Nxe6 36. Re5 Ng5 37. Re3 Rf8 38. Be2 Nf3+ 39. Bxf3 Rxf3 40. Rxf3 Bxf3 41. Bd2 g5 42. Kf2 Bh5 43. Be3 a6 44. a4 Bf7 45. a5 Kd7 46. h4 gxh4 47. Bxh6 Bxc4 48. Be3 Bd5 49. Bb6 Ke6 50. Kg1 Kf5 51. Kh2 Kg4 52. Bd8 Be6 53. Bb6 Bd5 54. Bd8 h3 55. Bb6 Bg2 56. c4 Kf3 57. c5 Kf4 58. Bc7+ Ke4 59. Bb6 Kd5 60. Kg1 Kc6 1/2-1/2

[Event "Steinweg op 4th"]
[Site "Antwerp"]
[Date "1990.??.??"]
[Round "5"]
[White "Ziatdinov, Raset"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2480"]
[BlackElo "2310"]
[PlyCount "125"]
[EventDate "1990.08.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Qg4 Nf6 8. Qg3 d6 9. Nc3 Nc6 10. Bg5 h6 11. Bd2 Ne5 12. 0-0-0 b5 13. Kb1 Bb7 14. Nxb5 axb5 15. Bxb5+ Bc6 16. Qxe5 0-0 17. Bb4 dxe5 18. Rxd8 Rfxd8 19. Bxc6 Rab8 20. a3 Bxf2 21. Na5 Bb6 22. Nc4 Rbc8 23. Bb5 Bc5 24. Ba6 Bxb4 25. axb4 Rc6 26. Bb5 Rc7 27. Nxe5 Nxe4 28. Nf3 Rb8 29. Re1 Nd6 30. Bd3 Rxb4 31. b3 Kf8 32. Kb2 Ke7 33. c3 Rb8 34. Nd4 Kd7 35. b4 Rbc8 36. Nb5 Nxb5 37. Bxb5+ Kd6 38. Rd1+ Ke7 39. Rc1 e5 40. Kb3 f5 41. Ba6 Ra8 42. b5 e4 43. Kb4 e3 44. c4 Rd7 45. c5 Rd2 46. c6 Kd6 47. c7 e2 48. c8Q Rxc8 49. Bxc8 Rd1 50. Rc6+ Kd5 51. Re6 e1Q+ 52. Rxe1 Rxe1 53. Bxf5 Re2 54. Bd7 Kd4 55. Bc6 Rb2+ 56. Ka5 Kc5 57. Ka6 g5 58. h3 h5 59. Kb7 g4 60. hxg4 hxg4 61. Kc7 g3 62. Kd7 Re2 63. Bf3 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "1989.??.??"]
[Round "1"]
[White "Belkhodja, Slim"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B41"]
[WhiteElo "2365"]
[BlackElo "2290"]
[PlyCount "69"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. e5 Ne4 8. Qg4 Nxc3 9. a3 Bf8 10. bxc3 d6 11. exd6 e5 12. Nf5 g6 13. Qg3 Nc6 14. Bg5 f6 15. Ne7 Bxe7 16. dxe7 Qxe7 17. Be3 Be6 18. Be2 Na5 19. c5 Rc8 20. 0-0 Nb3 21. Rab1 Nxc5 22. Qh4 0-0 23. Rb6 Nb3 24. Qb4 Rf7 25. Rb1 a5 26. Qxe7 Rxe7 27. Rxe6 Rxe6 28. Rxb3 a4 29. Rxb7 Rxc3 30. Bh6 Rxa3 31. h4 Rc6 32. Rg7+ Kh8 33. Rf7 Rc8 34. Bc4 Rc3 35. Be6 1-0

[Event "Forli op"]
[Site "Forli"]
[Date "1989.??.??"]
[Round "8"]
[White "Beulen, Marcel"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "B09"]
[WhiteElo "2225"]
[BlackElo "2290"]
[PlyCount "32"]
[EventDate "1989.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. a4 Na6 6. Nf3 c5 7. Bb5+ Bd7 8. e5 Ng4 9. e6 fxe6 10. Ng5 Bxd4 11. Nxe6 Bxb5 12. Nxd8 Bf2+ 13. Kd2 Be3+ 14. Ke1 Bf2+ 15. Kd2 Be3+ 16. Ke1 Bf2+ 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "1989.??.??"]
[Round "4"]
[White "De Boer, Gert Jan"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2385"]
[BlackElo "2290"]
[PlyCount "44"]
[EventDate "1989.??.??"]
[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. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 0-0 8. Be2 c5 9. 0-0 cxd4 10. cxd4 Nc6 11. Be3 Bg4 12. d5 Bxa1 13. Qxa1 Na5 14. Bh6 f6 15. Bxf8 Qxf8 16. Nd4 Bxe2 17. Nxe2 Rc8 18. Rc1 Qd8 19. Nf4 Nc4 20. Ne6 Qa5 21. h4 Qd2 22. Qb1 b6 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "1989.??.??"]
[Round "2"]
[White "Den Boer, Ber"]
[Black "Atlas, Robert"]
[Result "1-0"]
[ECO "E67"]
[WhiteElo "2290"]
[PlyCount "59"]
[EventDate "1989.??.??"]
[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 d6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 g6 6. Bg2 Bg7 7. 0-0 0-0 8. b3 Re8 9. h3 a6 10. Be3 exd4 11. Nxd4 Nc5 12. Qc2 c6 13. b4 Ne6 14. Nb3 Nh5 15. Rad1 f5 16. Na4 f4 17. Bb6 Qg5 18. Nd2 fxg3 19. Ne4 gxf2+ 20. Rxf2 Qh4 21. Nxd6 Rf8 22. Rxf8+ Bxf8 23. Bf2 Qf4 24. c5 Ng5 25. Nb6 Bxh3 26. Rd4 Qf6 27. Nxa8 Bxg2 28. Kxg2 Nf4+ 29. Rxf4 Qxf4 30. Qc4+ 1-0

[Event "NED-ch U18"]
[Site "Netherlands"]
[Date "1989.??.??"]
[Round "6"]
[White "Den Boer, Ber"]
[Black "Bosch, Jeroen"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2290"]
[BlackElo "2320"]
[PlyCount "28"]
[EventDate "1989.??.??"]
[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 d5 2. Nf3 Nf6 3. c4 dxc4 4. Nc3 c5 5. e3 e6 6. Bxc4 a6 7. a4 Nc6 8. 0-0 Be7 9. Qe2 cxd4 10. Rd1 e5 11. exd4 exd4 12. Nxd4 Nxd4 13. Qe5 Qd6 14. Qxd6 Bxd6 1/2-1/2

[Event "Forli op"]
[Site "Forli"]
[Date "1989.??.??"]
[Round "7"]
[White "Den Boer, Ber"]
[Black "De Eccher, Stefano"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2290"]
[BlackElo "2270"]
[PlyCount "72"]
[EventDate "1989.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Ne4 6. Nxe4 Bxe4 7. Nd2 Bb7 8. e4 Qf6 9. d5 a5 10. Be2 Na6 11. 0-0 Bd6 12. Rb1 0-0 13. Kh1 exd5 14. cxd5 Rae8 15. f4 Qd4 16. b3 Rxe4 17. Bb2 Qxd5 18. Bf3 f5 19. Bxe4 fxe4 20. Qg4 Rf7 21. Nc4 Qf5 22. Qxf5 Rxf5 23. Rbd1 Nc5 24. Nxd6 cxd6 25. Rxd6 e3 26. Be5 g5 27. Rxb6 gxf4 28. Bd4 f3 29. Rxb7 e2 30. Rb8+ Kf7 31. Rg1 f2 32. Bxf2 Rxf2 33. Rh8 Rf1 34. Rxh7+ Ke6 35. Rh6+ Kd5 36. Rh8 Kd4 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "1989.??.??"]
[Round "6"]
[White "Den Boer, Ber"]
[Black "Geisler, Robert"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2290"]
[BlackElo "2230"]
[PlyCount "43"]
[EventDate "1989.??.??"]
[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. Nf3 c5 3. d5 g6 4. c4 b5 5. cxb5 a6 6. Nc3 axb5 7. d6 Qa5 8. e3 Ba6 9. b4 Qxb4 10. Bd2 Qa3 11. Bxb5 Ne4 12. Nxe4 Bxb5 13. Bc3 f6 14. dxe7 Bxe7 15. Bxf6 Qb4+ 16. Nfd2 Rf8 17. Bxe7 Kxe7 18. Qg4 Bd3 19. Qg5+ Kf7 20. Qd5+ Kg7 21. Qxd3 Qa3 22. Qc4 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "1989.??.??"]
[Round "8"]
[White "Den Boer, Ber"]
[Black "Krudde, Fitzgerald"]
[Result "1-0"]
[ECO "D61"]
[WhiteElo "2290"]
[BlackElo "2270"]
[PlyCount "81"]
[EventDate "1989.??.??"]
[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 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 Nbd7 6. Qc2 0-0 7. e3 Re8 8. 0-0-0 c6 9. h4 a5 10. e4 dxc4 11. Bxc4 a4 12. Bd3 a3 13. b3 Nf8 14. Bxf6 Bxf6 15. e5 Be7 16. Ne4 b6 17. Neg5 g6 18. Qd2 f5 19. exf6 Bxf6 20. Qf4 Ra7 21. Ne5 Rc7 22. Bc2 Qe7 23. Ne4 Bg7 24. h5 c5 25. hxg6 hxg6 26. dxc5 Bb7 27. cxb6 g5 28. Nxg5 Rc5 29. Ngf7 Rec8 30. Rd2 Ng6 31. Nh6+ Bxh6 32. Qxh6 Be4 33. Nc4 Rxc4 34. bxc4 Rxc4 35. b7 Qxb7 36. Rd8+ Kf7 37. Qh7+ Kf6 38. Qxb7 Bxb7 39. Kd2 Rc5 40. Rh6 Ke7 41. Rb8 1-0

[Event "Forli op"]
[Site "Forli"]
[Date "1989.??.??"]
[Round "3"]
[White "Den Boer, Ber"]
[Black "Lagrotteria, Salvatore"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2290"]
[PlyCount "104"]
[EventDate "1989.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Bc5 9. Nb3 Nc6 10. Bg5 a6 11. 0-0-0 Qc7 12. Nxc5 bxc5 13. Be3 d6 14. Be2 0-0 15. g4 e5 16. g5 Nd4 17. Bxd4 cxd4 18. gxf6 dxc3 19. Qxc3 gxf6 20. Qd2 Bxe4 21. Rdg1+ Bg6 22. h4 h5 23. Rd1 Rfd8 24. Qh6 Rab8 25. Rhg1 Qb7 26. Rd2 Rdc8 27. Qxh5 Kf8 28. Qh6+ Ke7 29. Qe3 Qe4 30. Qxe4 Bxe4 31. Rgd1 Rb6 32. b4 a5 33. b5 Rxb5 34. Rb2 Rxb2 35. Kxb2 Rb8+ 36. Kc3 a4 37. Bd3 Bf3 38. Rb1 Rh8 39. Rb4 Bc6 40. Bc2 Rxh4 41. Bxa4 Bxa4 42. Rxa4 Rf4 43. Ra7+ Ke6 44. a4 Rxf2 45. a5 f5 46. a6 f4 47. Ra8 Ra2 48. a7 Kf5 49. Rd8 Rxa7 50. Rxd6 f3 51. c5 f2 52. Rd1 Kf4 0-1

[Event "Forli op"]
[Site "Forli"]
[Date "1989.??.??"]
[Round "9"]
[White "Den Boer, Ber"]
[Black "Mauro, Alan"]
[Result "1/2-1/2"]
[ECO "E99"]
[WhiteElo "2290"]
[PlyCount "76"]
[EventDate "1989.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[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 c6 13. Kh1 Kh8 14. Qc2 b5 15. Nb4 bxc4 16. Bxc4 Rb8 17. Nxc6 Nxc6 18. dxc6 Qb6 19. Nd5 Qxc6 20. Rac1 Ba6 21. Qd3 Bxc4 22. Rxc4 Qb5 23. Nxf6 Rxf6 24. b3 Rbf8 25. Qd5 Qa6 26. exf5 Rxf5 27. a4 e4 28. Qc6 Qxc6 29. Rxc6 Rd5 30. Be3 Rd3 31. Re1 exf3 32. gxf3 Re8 33. Bf2 Rxe1+ 34. Bxe1 Be5 35. Kg2 Rxb3 36. Bg3 Bxg3 37. Kxg3 Ra3 38. Ra6 Kg7 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "1989.??.??"]
[Round "3"]
[White "Den Boer, Ber"]
[Black "Pliester, Leon"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2290"]
[BlackElo "2385"]
[PlyCount "33"]
[EventDate "1989.??.??"]
[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 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Be7 8. e4 Nxc3 9. bxc3 0-0 10. Bd3 c5 11. 0-0 Qc8 12. Qe2 Ba6 13. Bf4 Bxd3 14. Qxd3 Nd7 15. Qe2 Re8 16. Rfe1 Qb7 17. a4 1/2-1/2

[Event "NED-ch U18"]
[Site "Netherlands"]
[Date "1989.??.??"]
[Round "2"]
[White "Den Boer, Ber"]
[Black "Plomp, Michiel Pieter"]
[Result "1-0"]
[ECO "D55"]
[WhiteElo "2290"]
[PlyCount "66"]
[EventDate "1989.??.??"]
[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. Nf3 e6 3. c4 d5 4. Nc3 Be7 5. Bg5 0-0 6. e3 b6 7. cxd5 Nxd5 8. Bxe7 Qxe7 9. Nxd5 exd5 10. Rc1 Bb7 11. Bd3 g6 12. h4 c5 13. h5 Nd7 14. b3 Rac8 15. 0-0 Nf6 16. hxg6 hxg6 17. Ne5 Kg7 18. f4 cxd4 19. Rxc8 Bxc8 20. exd4 Qb4 21. Qa1 Rh8 22. Qb2 Bb7 23. a3 Qd6 24. f5 Nd7 25. fxg6 f6 26. Bb5 Nxe5 27. dxe5 fxe5 28. Rf7+ Kxg6 29. Qf2 Bc8 30. b4 e4 31. Rf4 Rh5 32. Be8+ Kg5 33. Qg3+ Kh6 1-0

[Event "Forli op"]
[Site "Forli"]
[Date "1989.??.??"]
[Round "5"]
[White "Den Boer, Ber"]
[Black "Raiano, Andrea"]
[Result "1/2-1/2"]
[ECO "A79"]
[WhiteElo "2290"]
[BlackElo "2240"]
[PlyCount "74"]
[EventDate "1989.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Nd2 Bg7 8. e4 0-0 9. Be2 Na6 10. 0-0 Nc7 11. a4 Re8 12. f3 Nd7 13. Nc4 Ne5 14. Ne3 f5 15. exf5 gxf5 16. f4 Ng6 17. Kh1 Qf6 18. Bd2 Bd7 19. Qb3 Rab8 20. Nc2 b5 21. axb5 Bxb5 22. Bxb5 a6 23. Qa4 axb5 24. Qa7 Qf7 25. Ne3 Rec8 26. Ra5 Bxc3 27. bxc3 Ra8 28. Qb7 Rab8 29. Qc6 Ne8 30. Qa6 Ne7 31. c4 Qf6 32. Nd1 Nc7 33. Bc3 Qh6 34. Qa7 bxc4 35. Re1 Ra8 36. Qb7 Rab8 37. Qa7 Ra8 1/2-1/2

[Event "NED-ch U18"]
[Site "Netherlands"]
[Date "1989.??.??"]
[Round "8"]
[White "Den Boer, Ber"]
[Black "Tjiam, Dharma"]
[Result "1-0"]
[ECO "A33"]
[WhiteElo "2290"]
[PlyCount "129"]
[EventDate "1989.??.??"]
[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. Nf3 e6 3. g3 c5 4. Bg2 Nc6 5. 0-0 cxd4 6. Nxd4 Be7 7. c4 0-0 8. Nc3 Qc7 9. Ndb5 Qb8 10. Bf4 e5 11. Bg5 a6 12. Bxf6 Bxf6 13. Nd6 Nd4 14. c5 Be7 15. e3 Ne6 16. Nd5 Bd8 17. Nb6 Bxb6 18. cxb6 a5 19. Rc1 Ra6 20. Nc4 d5 21. Qxd5 Rd8 22. Qe4 f6 23. Rfd1 Rf8 24. Rd6 Ng5 25. Qd5+ Nf7 26. Rd1 h6 27. Be4 f5 28. Bd3 e4 29. Ne5 Qxd6 30. Qxd6 Nxd6 31. Bxa6 Rf6 32. Nc4 Nxc4 33. Bxc4+ Be6 34. Bxe6+ Rxe6 35. Rd5 g6 36. Rd8+ Kf7 37. Rd7+ Re7 38. Rc7 Ke6 39. Rc5 Kd6 40. Rxa5 Kc6 41. Ra4 Kxb6 42. Rd4 Kc7 43. h3 Re5 44. g4 fxg4 45. hxg4 h5 46. gxh5 gxh5 47. Kg2 Rg5+ 48. Kh3 Rf5 49. Kg3 h4+ 50. Kxh4 Rxf2 51. b4 Rxa2 52. Kg3 Kc6 53. Kf4 Rh2 54. Kxe4 Rh4+ 55. Ke5 Rh5+ 56. Kf6 Rh1 57. e4 Rf1+ 58. Ke6 Rf4 59. Ke5 Rf1 60. Rd6+ Kb5 61. Ke6 Rh1 62. Rd4 Rh6+ 63. Kd5 Kb6 64. Rc4 Rh5+ 65. e5 1-0

[Event "Forli op"]
[Site "Forli"]
[Date "1989.??.??"]
[Round "2"]
[White "Den Boer, Ber"]
[Black "Valenti, Giuseppe"]
[Result "1-0"]
[ECO "A79"]
[WhiteElo "2290"]
[PlyCount "83"]
[EventDate "1989.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 e6 2. c4 c5 3. d5 Nf6 4. Nf3 exd5 5. cxd5 d6 6. Nc3 g6 7. Nd2 Bg7 8. e4 0-0 9. Be2 Re8 10. 0-0 Na6 11. f3 Nc7 12. a4 b6 13. Nc4 Ba6 14. Bg5 Qd7 15. Rb1 h6 16. Be3 Rab8 17. Qd2 Kh7 18. b4 Qe7 19. b5 Bb7 20. Bf4 Rbd8 21. Rfe1 Nh5 22. Be3 Qf6 23. Rb3 g5 24. Bd3 Kg8 25. e5 Qe7 26. exd6 Rxd6 27. Bf2 Qd8 28. Nxd6 Qxd6 29. Rxe8+ Nxe8 30. Bc4 Bxc3 31. Rxc3 Nef6 32. h4 Nf4 33. hxg5 hxg5 34. g3 Nh3+ 35. Kf1 Bc8 36. Re3 Bd7 37. Qc3 Nxd5 38. Bxd5 Qxd5 39. Qd3 Qa2 40. Re2 Qa1+ 41. Kg2 Nxf2 42. Qxd7 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "1989.??.??"]
[Round "7"]
[White "Hoeksema, Hendrik Pieter"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2380"]
[BlackElo "2290"]
[PlyCount "109"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 e5 5. Bg2 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. a3 Be6 9. b4 Nd4 10. Rb1 Nxf3+ 11. Bxf3 Qc8 12. d3 0-0 13. Bb2 a5 14. b5 a4 15. Ne4 f5 16. Nd2 Bf6 17. e4 Qd7 18. exf5 Ba2 19. Ra1 Bd5 20. Ne4 Qxb5 21. Qc2 c6 22. Be2 Bb3 23. Qd2 Rad8 24. Bc3 Be7 25. g4 Qd5 26. Qb2 Rfe8 27. g5 Nd7 28. Rae1 Rf8 29. Bg4 Qxd3 30. f4 Bd5 31. Nf2 Qb5 32. h4 Bc4 33. fxe5 Bxf1 34. Rxf1 Nc5 35. f6 Qxb2 36. Bxb2 Rde8 37. fxe7 Rxe7 38. Rc1 Rxf2 39. Kxf2 Nd3+ 40. Ke3 Nxb2 41. e6 h5 42. Bh3 b5 43. Rxc6 Nc4+ 44. Kd4 Kf8 45. Bf5 Rb7 46. Be4 Ra7 47. Kc5 Nxa3 48. Rc8+ Ke7 49. Kb6 Nc4+ 50. Kxa7 Nd6 51. Rc7+ Kxe6 52. Bc2 Nf5 53. Bxf5+ Kxf5 54. Rxg7 Kg4 55. Rb7 1-0

[Event "NED-ch U18"]
[Site "Netherlands"]
[Date "1989.??.??"]
[Round "3"]
[White "Lemmers, Oscar"]
[Black "Den Boer, Ber"]
[Result "0-1"]
[ECO "B20"]
[BlackElo "2290"]
[PlyCount "88"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. g3 d5 3. exd5 Qxd5 4. Qf3 Qe6+ 5. Qe3 Nc6 6. Bg2 Qxe3+ 7. fxe3 Bf5 8. Na3 e5 9. Ne2 0-0-0 10. 0-0 Be6 11. d3 Nge7 12. b3 f6 13. Bb2 Nd5 14. Bc1 Be7 15. Nc4 Ndb4 16. Na3 a6 17. Bd2 Kc7 18. Rfc1 h5 19. Nb1 h4 20. a3 Nd5 21. Nbc3 Nb6 22. Be1 g5 23. Bf2 f5 24. Rd1 Bf6 25. Bxc6 Kxc6 26. e4 f4 27. Kf1 hxg3 28. hxg3 Rh2 29. Bg1 Bh3+ 30. Ke1 Rg2 31. Bf2 Rh8 32. Rdc1 Bg4 33. Nd1 Rh1+ 34. Kd2 Rxd1+ 35. Rxd1 Rxf2 36. Re1 f3 37. Ke3 Rxe2+ 38. Rxe2 fxe2 39. Rh1 Nd7 40. Kf2 Kd6 41. Rg1 Bd8 42. Rc1 Bb6 43. Ke1 Bf3 44. Kd2 c4 0-1

[Event "Forli op"]
[Site "Forli"]
[Date "1989.??.??"]
[Round "6"]
[White "Martorelli, Antonio"]
[Black "Den Boer, Ber"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "2250"]
[BlackElo "2290"]
[PlyCount "112"]
[EventDate "1989.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. Nc3 Nc6 8. Qe2 d6 9. Be3 Bxe3 10. Qxe3 Nf6 11. 0-0-0 0-0 12. f4 Qc7 13. g4 b5 14. g5 Ne8 15. Qh3 Nb4 16. e5 Nxd3+ 17. Rxd3 dxe5 18. Ne4 f5 19. gxf6 Nxf6 20. Nxf6+ Rxf6 21. fxe5 Rh6 22. Qe3 Bb7 23. Rg1 Rxh2 24. Rc3 Qf7 25. Nc5 Bd5 26. Qg3 Rf2 27. b4 a5 28. Na6 Bc4 29. Nc7 Rc8 30. Na6 Ra8 31. Rd1 Rf1 32. Rxf1 Qxf1+ 33. Kb2 Rxa6 34. Rf3 Qe2 35. Qf4 h6 36. Rg3 axb4 37. Rxg7+ Kxg7 38. Qf6+ Kg8 39. Qd8+ Kf7 40. Qd7+ Kg6 41. Qe8+ Kf5 42. Qf7+ Kxe5 43. Qg7+ Kd5 44. Qb7+ Rc6 45. Qd7+ Rd6 46. Qb7+ Kd4 47. Qa7+ Ke4 48. Qe7 Rd4 49. Qh4+ Ke5 50. Qg3+ Kd5 51. Qg7 Rd2 52. Qd7+ Ke4 53. Qh7+ Kf3 54. Qf7+ Kg2 55. Qg7+ Kf1 56. Qf6+ Qf2 0-1

[Event "Forli op"]
[Site "Forli"]
[Date "1989.??.??"]
[Round "4"]
[White "Michalet, Guy"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "E63"]
[WhiteElo "2215"]
[BlackElo "2290"]
[PlyCount "133"]
[EventDate "1989.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nc6 7. Nc3 a6 8. h3 Rb8 9. a4 Na5 10. b3 c5 11. dxc5 Nd7 12. Bd2 dxc5 13. Rb1 Nc6 14. Qc1 Nd4 15. Bh6 Bxh6 16. Qxh6 Nf6 17. Rfd1 Qa5 18. Nd5 Nxd5 19. cxd5 Nxf3+ 20. exf3 b5 21. axb5 Bf5 22. Rb2 Rxb5 23. Bf1 Qa3 24. Bxb5 Qxb2 25. Bc4 Qc3 26. Kg2 a5 27. Qe3 Qxe3 28. fxe3 Bd7 29. Ra1 Ra8 30. g4 Kg7 31. g5 e5 32. dxe6 Bxe6 33. Bxe6 fxe6 34. Kg3 Kf7 35. Kf4 Ke7 36. Ke5 Ra6 37. Ra4 Kf7 38. Rh4 Kg7 39. Rc4 Rc6 40. Ke4 Rb6 41. Rxc5 Rxb3 42. Rxa5 Rb7 43. Ke5 Kf7 44. e4 Rd7 45. Rc5 Ra7 46. Kd6 Ra6+ 47. Rc6 Ra3 48. Rc7+ Kg8 49. f4 Rxh3 50. Kxe6 Ra3 51. f5 Ra6+ 52. Ke7 gxf5 53. exf5 Ra5 54. Rc8+ Kg7 55. f6+ Kg6 56. Rg8+ Kf5 57. Rg7 Ra7+ 58. Kd6 Ra6+ 59. Kc5 Ra8 60. Kc6 h6 61. f7 Rf8 62. Kd6 hxg5 63. Ke7 Ra8 64. f8Q+ Rxf8 65. Kxf8 g4 66. Kf7 Kf4 67. Kg6 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "1989.??.??"]
[Round "5"]
[White "Peek, Marcel"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2365"]
[BlackElo "2290"]
[PlyCount "72"]
[EventDate "1989.??.??"]
[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 e6 3. Nf3 Bb4+ 4. Nbd2 d5 5. Qc2 0-0 6. a3 Be7 7. e4 dxe4 8. Nxe4 Nbd7 9. Nxf6+ Nxf6 10. Bd3 c5 11. Be3 Qa5+ 12. Bd2 Qc7 13. dxc5 Bxc5 14. Bc3 h6 15. Bxf6 gxf6 16. 0-0-0 Qf4+ 17. Kb1 Kh8 18. Rhe1 f5 19. Qe2 b6 20. g3 Qg4 21. h3 Qg7 22. g4 f4 23. Qe4 Bd7 24. Qxf4 Ba4 25. Rd2 Rad8 26. g5 Be7 27. gxh6 Qf6 28. Qe3 Bc5 29. Qe5 Be7 30. Rg1 Qxe5 31. Nxe5 Bf6 32. Ng4 Bg5 33. f4 Bxf4 34. Nf6 Bxh6 35. Rdg2 Bc6 36. Rg4 Be3 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "1989.??.??"]
[Round "9"]
[White "Pieterse, Gert"]
[Black "Den Boer, Ber"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2415"]
[BlackElo "2290"]
[PlyCount "67"]
[EventDate "1989.??.??"]
[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 e6 3. Nc3 Bb4 4. f3 c5 5. d5 Bxc3+ 6. bxc3 Qa5 7. e4 0-0 8. Bd2 d6 9. Bd3 Nbd7 10. dxe6 Ne5 11. exf7+ Rxf7 12. Be2 Be6 13. Nh3 Bxh3 14. gxh3 Nh5 15. 0-0 Ng6 16. f4 Nhxf4 17. Bg4 Qd8 18. Kh1 Qh4 19. Bf5 Re8 20. Bxf4 Nxf4 21. Qxd6 Nxh3 22. Qxc5 Ng5 23. Qd5 g6 24. Bd7 Qxe4+ 25. Qxe4 Rxe4 26. Rxf7 Kxf7 27. Rb1 b6 28. Bc6 Re3 29. Rb3 Re1+ 30. Kg2 Re2+ 31. Kg3 Rxa2 32. c5 bxc5 33. Rb7+ Kf6 34. Rxh7 0-1

[Event "Forli op"]
[Site "Forli"]
[Date "1989.??.??"]
[Round "1"]
[White "Taimanov, Mark E"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "2480"]
[BlackElo "2290"]
[PlyCount "61"]
[EventDate "1989.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 0-0 5. Bg2 d6 6. d4 c6 7. 0-0 Bg4 8. Nbd2 Qc8 9. e4 Na6 10. Qe2 Nd7 11. h3 Bxf3 12. Nxf3 e5 13. Rad1 Qc7 14. Rfe1 Rad8 15. c3 Rfe8 16. Qc2 Qb8 17. a4 Nc7 18. Ba3 c5 19. Bf1 a6 20. b4 cxd4 21. cxd4 exd4 22. Nxd4 d5 23. Nf3 dxe4 24. Rxe4 Nf6 25. Rxe8+ Nfxe8 26. Ng5 h6 27. Nxf7 Kxf7 28. Bc4+ Ne6 29. Bxe6+ Kxe6 30. Qxg6+ Bf6 31. Qg8+ 1-0

[Event "NED-ch U18"]
[Site "Netherlands"]
[Date "1989.??.??"]
[Round "1"]
[White "Van Ketel, Raoul"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "E84"]
[BlackElo "2290"]
[PlyCount "69"]
[EventDate "1989.??.??"]
[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. f3 Bg7 4. e4 d6 5. Nc3 0-0 6. Nge2 Nc6 7. Be3 a6 8. Qd2 Rb8 9. g4 b5 10. h4 h5 11. 0-0-0 b4 12. Nd5 hxg4 13. h5 gxf3 14. Nxf6+ exf6 15. h6 fxe2 16. Qxe2 Re8 17. hxg7 Kxg7 18. Bh6+ Kg8 19. Qh2 Bg4 20. Be2 Bxe2 21. Qxe2 f5 22. e5 dxe5 23. dxe5 Qe7 24. Bf4 Kg7 25. Bh6+ Kg8 26. Bf4 Qf8 27. Rd3 Qg7 28. Rdh3 g5 29. Rh8+ Qxh8 30. Rxh8+ Kxh8 31. Bxg5 Nxe5 32. Qh5+ Kg8 33. Bf6 Ng6 34. Qh6 Re1+ 35. Kd2 1-0

[Event "NED-ch U18"]
[Site "Netherlands"]
[Date "1989.??.??"]
[Round "5"]
[White "Van de Griendt, Jan Willem"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B49"]
[BlackElo "2290"]
[PlyCount "75"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. Be2 Nc6 5. d4 cxd4 6. Nxd4 Qc7 7. Be3 Nf6 8. 0-0 Bb4 9. Na4 0-0 10. Nxc6 bxc6 11. Nb6 Rb8 12. Nxc8 Rfxc8 13. Bxa6 Rf8 14. Bd3 Bd6 15. Kh1 Be5 16. c3 Rxb2 17. Qc1 Qb8 18. f4 Bc7 19. Bc5 Ng4 20. h3 d6 21. Ba7 Qb7 22. hxg4 c5 23. Ba6 Qxa7 24. Qxb2 Qxa6 25. Rab1 Qd3 26. Qb7 Ba5 27. Rf3 Qc2 28. Rbf1 Bxc3 29. f5 exf5 30. Rxf5 Qd2 31. g5 Qe2 32. R5f3 Be5 33. a4 c4 34. a5 c3 35. a6 Qc4 36. a7 Qc8 37. Rxf7 Kh8 38. a8Q 1-0

[Event "NED-ch U18"]
[Site "Netherlands"]
[Date "1989.??.??"]
[Round "9"]
[White "Vedder, Henk"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "A06"]
[BlackElo "2290"]
[PlyCount "111"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 c5 4. e3 Nc6 5. Bb5 e6 6. Bxc6+ bxc6 7. Ne5 Qc7 8. 0-0 Nd7 9. f4 Nxe5 10. Bxe5 Qe7 11. Bb2 f6 12. Nc3 Qf7 13. Na4 Ba6 14. d3 Bb5 15. c4 Bxa4 16. bxa4 Bd6 17. Ba3 0-0 18. Rc1 Rfc8 19. e4 Bf8 20. Qf3 f5 21. exf5 exf5 22. Rfe1 Rd8 23. Re5 Bd6 24. Re2 Rac8 25. Qf2 Qc7 26. Bxc5 Bxf4 27. Re7 Bxh2+ 28. Kh1 Qf4 29. Qxf4 Bxf4 30. Rf1 Bb8 31. Rxf5 Rf8 32. g4 Rxf5 33. gxf5 Rf8 34. Rb7 Rd8 35. cxd5 cxd5 36. Bd4 g6 37. Rg7+ Kf8 38. Rxh7 gxf5 39. Rh8+ Ke7 40. Bf6+ Kxf6 41. Rxd8 Bc7 42. Rxd5 Kg5 43. Kg2 Kf4 44. a5 Ke3 45. Rxf5 Kxd3 46. Rf7 Bxa5 47. Rxa7 Bb6 48. Rb7 Ba5 49. a4 Kc4 50. Rb5 Bc7 51. Kf3 Bh2 52. Ke4 Bd6 53. Kf5 Bb4 54. Ke6 Kb3 55. a5 Ka4 56. Rxb4+ 1-0

[Event "Groningen Casino op"]
[Site "Groningen"]
[Date "1988.12.29"]
[Round "8"]
[White "Den Boer, Ber"]
[Black "Beulen, Marcel"]
[Result "1/2-1/2"]
[ECO "D16"]
[BlackElo "2225"]
[PlyCount "24"]
[EventDate "1988.12.21"]
[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 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bg4 6. Ne5 Bh5 7. f3 Nfd7 8. Nxc4 e5 9. Ne4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 0-0 12. dxe5 b5 1/2-1/2

[Event "Groningen Casino op"]
[Site "Groningen"]
[Date "1988.12.28"]
[Round "7"]
[White "Dam, Ruurd"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "E00"]
[WhiteElo "2305"]
[PlyCount "9"]
[EventDate "1988.12.21"]
[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 e6 3. g3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 1/2-1/2

[Event "Groningen Casino op"]
[Site "Groningen"]
[Date "1988.12.27"]
[Round "6"]
[White "Michalet, Guy"]
[Black "Den Boer, Ber"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "2215"]
[PlyCount "101"]
[EventDate "1988.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 Bg7 5. Bg2 0-0 6. Nge2 c5 7. d3 Nc6 8. h3 Ne8 9. Be3 Nc7 10. d4 cxd4 11. Nxd4 Ne6 12. Nde2 Qa5 13. Qd2 Ne5 14. b3 Nc5 15. Nd4 Ned3+ 16. Ke2 Ne5 17. Rhd1 a6 18. f4 Nc6 19. Nxc6 bxc6 20. Rac1 Rb8 21. Bd4 Bxd4 22. Qxd4 Ne6 23. Qe3 c5 24. Kf2 Nd4 25. Kg1 e5 26. fxe5 dxe5 27. Qh6 Be6 28. Rf1 f6 29. Rf2 Rbc8 30. h4 Qc7 31. Kh2 Qg7 32. Qxg7+ Kxg7 33. Bh3 Bxh3 34. Kxh3 h5 35. Rg1 f5 36. Rgf1 Rcd8 37. Re1 Rfe8 38. Nd5 Rd7 39. Re3 Rf7 40. exf5 Nxf5 41. Re1 e4 42. Rfe2 Nd6 43. Nf4 Rfe7 44. Nd5 Re5 45. Nc7 R8e7 46. Nd5 Re8 47. Rd1 Nf5 48. Nc7 R8e7 49. Nd5 Re8 50. Nc7 R8e7 51. Nd5 1/2-1/2

[Event "Groningen Casino op"]
[Site "Groningen"]
[Date "1988.12.26"]
[Round "5"]
[White "Den Boer, Ber"]
[Black "Bjertrup, Michael"]
[Result "0-1"]
[ECO "A57"]
[PlyCount "86"]
[EventDate "1988.12.21"]
[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 c5 3. d5 b5 4. Nf3 g6 5. a4 b4 6. b3 Bg7 7. Bb2 d6 8. g3 Bb7 9. Bg2 0-0 10. 0-0 Qc7 11. Nfd2 Nbd7 12. e4 e5 13. dxe6 fxe6 14. f4 Rad8 15. Qe2 e5 16. f5 Nb8 17. g4 gxf5 18. exf5 Bh6 19. Ne4 Nxe4 20. Bxe4 Bxe4 21. Qxe4 Qc6 22. Qf3 Qxf3 23. Rxf3 e4 24. Rf1 Nc6 25. Ra2 Na5 26. h4 Be3+ 27. Kg2 d5 28. cxd5 Rxd5 29. f6 Nxb3 30. Re1 Rd3 31. g5 Re8 32. Ba1 Nxa1 33. Rxa1 c4 34. Ra2 c3 35. Rae2 Bd4 36. h5 e3 37. Rf1 Re5 38. f7+ Kf8 39. g6 Rxh5 40. Kf3 Rf5+ 41. Ke4 Rxf1 42. Kxd3 hxg6 43. Kxd4 Rxb1 0-1

[Event "Groningen Casino op"]
[Site "Groningen"]
[Date "1988.12.24"]
[Round "4"]
[White "Pliester, Leon"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "E41"]
[WhiteElo "2385"]
[PlyCount "123"]
[EventDate "1988.12.21"]
[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 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nge2 cxd4 7. exd4 d5 8. cxd5 Nxd5 9. 0-0 Nf6 10. Bg5 Be7 11. Rc1 Nd5 12. Bxe7 Ncxe7 13. Be4 Bd7 14. Bxd5 exd5 15. Nf4 0-0 16. Re1 Bc6 17. Qg4 Qd6 18. Nd3 Rfe8 19. Re3 Bd7 20. Qf4 Qxf4 21. Nxf4 Nf5 22. Rd3 Rad8 23. g4 Ne7 24. f3 Bc6 25. Kf2 Ng6 26. Ng2 f5 27. g5 h6 28. gxh6 gxh6 29. Rdd1 Kf7 30. Ne2 Re7 31. Nef4 Rde8 32. Nxg6 Kxg6 33. Nf4+ Kg5 34. Kg3 Re3 35. h4+ Kf6 36. Kf2 Kf7 37. Rd2 R3e7 38. Re2 Rxe2+ 39. Nxe2 Rg8 40. Nf4 Re8 41. Nd3 Rg8 42. Re1 Bb5 43. Ne5+ Kf6 44. Rc1 Bc6 45. Rc3 Rc8 46. Ke3 Ke6 47. Rc2 Kf6 48. Rg2 Be8 49. Rg8 a5 50. Kd2 h5 51. Rf8+ Ke6 52. Nd3 Bd7 53. Nc5+ Ke7 54. Nxd7 Rxf8 55. Nxf8 Kxf8 56. Ke3 Kf7 57. Kf4 Kf6 58. a4 b6 59. b3 Ke6 60. Kg5 f4 61. Kg6 Ke7 62. Kxh5 1-0

[Event "Groningen Casino op"]
[Site "Groningen"]
[Date "1988.12.23"]
[Round "3"]
[White "Den Boer, Ber"]
[Black "Estremera Panos, Sergio"]
[Result "1-0"]
[ECO "D27"]
[BlackElo "2340"]
[PlyCount "81"]
[EventDate "1988.12.21"]
[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 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 c5 6. Bxc4 a6 7. a4 Nc6 8. 0-0 Qc7 9. Qe2 Be7 10. dxc5 Bxc5 11. e4 Ng4 12. g3 0-0 13. Bf4 e5 14. Bg5 h6 15. Bd2 Nf6 16. Be3 Bxe3 17. Qxe3 Bh3 18. Rfc1 Ng4 19. Qe2 Rad8 20. Nd5 Qd6 21. Bxa6 f5 22. Bxb7 Na5 23. Rc7 Nxb7 24. Ne7+ Kh8 25. Rxb7 fxe4 26. Qxe4 Rf6 27. Re1 Qc5 28. Qe2 Rdf8 29. b4 Qc3 30. Nh4 Rxf2 31. Nhg6+ Kh7 32. Nxf8+ Rxf8 33. Qe4+ Kh8 34. Ng6+ Kg8 35. Qd5+ Kh7 36. Nxf8+ Kh8 37. Ng6+ Kh7 38. Qe4 Nf6 39. Qxe5 Qc6 40. Nf4 Qxb7 41. Nxh3 1-0

[Event "Groningen Casino op"]
[Site "Groningen"]
[Date "1988.12.22"]
[Round "2"]
[White "Den Boer, Ber"]
[Black "Maier, Christian"]
[Result "0-1"]
[ECO "A77"]
[BlackElo "2320"]
[PlyCount "128"]
[EventDate "1988.12.21"]
[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 e6 2. c4 Nf6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Nd2 0-0 9. Be2 Re8 10. 0-0 Nbd7 11. f3 Ne5 12. a4 g5 13. Ra3 Nfd7 14. Qc2 Ng6 15. Nc4 Nde5 16. Ne3 Nf4 17. Bb5 Re7 18. g3 Nh3+ 19. Kg2 h5 20. Be2 Re8 21. Nf5 g4 22. fxg4 hxg4 23. Bxg4 Nxg4 24. Kxh3 Ne5 25. Kg2 a6 26. Qe2 Bxf5 27. Rxf5 Qd7 28. Bg5 Ng6 29. Qd3 Ne7 30. Rf4 Be5 31. Rf1 Qg4 32. Bf6 Ng6 33. Kh1 Bxc3 34. Bxc3 Rxe4 35. Qf3 Qxf3+ 36. Rxf3 Rae8 37. Rf6 Re2 38. Rxd6 Rc2 39. Ra1 Ree2 40. h4 Rh2+ 41. Kg1 Rcg2+ 42. Kf1 Rxg3 43. Re1 Rf3+ 44. Kg1 Rxh4 45. Rf6 Rhf4 46. Rxf4 Nxf4 47. Re8+ Kh7 48. d6 Rd3 49. Re7 Kg6 50. Be5 Kf5 51. Bxf4 Kxf4 52. Rxf7+ Ke3 53. Rxb7 Rxd6 54. a5 Rd1+ 55. Kg2 Ra1 56. b4 c4 57. b5 axb5 58. Rxb5 c3 59. Rc5 Ra2+ 60. Kf1 c2 61. Re5+ Kd2 62. Rd5+ Kc3 63. Rc5+ Kb4 64. Rc8 Ra1+ 0-1

[Event "Groningen Casino op"]
[Site "Groningen"]
[Date "1988.12.21"]
[Round "1"]
[White "Van Mil, Johan"]
[Black "Den Boer, Ber"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2385"]
[PlyCount "151"]
[EventDate "1988.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. 0-0 Nc6 8. h3 Bxf3 9. Bxf3 Qd7 10. dxc5 Bxc5 11. Qe2 0-0 12. Bg5 Be7 13. Nd2 Qc7 14. Rfe1 Ng4 15. Bxg4 Bxg5 16. Rad1 Rad8 17. Nb3 Bf6 18. Qb5 a6 19. Qc4 b5 20. Qc5 Be7 21. Qe3 Rxd1 22. Rxd1 Ne5 23. Be2 Nc4 24. Bxc4 bxc4 25. Nd4 Rd8 26. Qe2 Qd6 27. Re1 Qd5 28. Nf3 Bf6 29. Qc2 Qa5 30. a3 Rd3 31. Re4 Qb5 32. Ne1 Rd5 33. Qe2 Rc5 34. Nf3 g6 35. Nd4 Bxd4 36. Rxd4 Qc6 37. Qd2 Rd5 38. Kf1 Qd6 39. Rxd5 exd5 40. Qd4 Qe6 41. h4 h5 42. f3 Qf5 43. Qd2 Kf8 44. Kf2 Qe5 45. Qe3 Qxe3+ 46. Kxe3 Ke7 47. Kf4 f6 48. g3 Kf7 49. Ke3 Ke6 50. Kd4 Kd6 51. g4 Ke6 52. gxh5 gxh5 53. Kc5 Ke5 54. Kb6 Kf4 55. Kxa6 Kxf3 56. Kb5 f5 57. a4 f4 58. a5 Kg4 59. a6 f3 60. a7 f2 61. a8Q f1Q 62. Qxd5 Kxh4 63. Qxc4+ Qxc4+ 64. Kxc4 Kg4 65. Kd3 Kf3 66. b4 h4 67. b5 h3 68. b6 h2 69. b7 h1Q 70. b8Q Qd1+ 71. Kc4 Qe2+ 72. Kc5 Qe3+ 73. Kb4 Qe4+ 74. Ka3 Ke3 75. Qb6+ Kd2 76. Qd4+ 1-0

