[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1991.??.??"]
[Round "3"]
[White "De Geus, Gerard"]
[Black "Overeem, Marc"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "128"]
[EventDate "1991.??.??"]
[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. c3 d5 3. exd5 Qxd5 4. Nf3 Nf6 5. Na3 e6 6. Be2 Qd8 7. 0-0 Nbd7 8. Nc4 Be7 9. d4 0-0 10. Bf4 b6 11. Qa4 Bb7 12. Rad1 a6 13. Nd6 Qb8 14. dxc5 Nxc5 15. Qd4 Rd8 16. Ng5 Bxd6 17. Bxd6 Qc8 18. Qh4 h6 19. Nf3 Qc6 20. Bf4 Qe4 21. Rfe1 Rxd1 22. Bxd1 Qg6 23. Bg3 Nd3 24. Bc2 Bxf3 25. Bxd3 Qxd3 26. gxf3 Qxf3 27. Qd4 b5 28. c4 bxc4 29. Qxc4 Qb7 30. b4 Rc8 31. Qd4 Qd5 32. Qxd5 Nxd5 33. Bd6 Rc2 34. a3 Ra2 35. Rb1 Nc3 36. Rb3 Nb5 37. Bc5 Rxa3 38. Rb2 Nc3 39. Kg2 Nb5 40. Rd2 a5 41. Rd8+ Kh7 42. Rb8 Nc7 43. Rb7 Na6 44. Bd4 Rd3 45. Bb2 Rb3 46. Be5 Rxb4 47. Rxf7 Rg4+ 48. Kf1 Rg5 49. f4 Rg4 50. h3 Rg6 51. Ra7 Nb4 52. Rxa5 Nc6 53. Ra6 Nxe5 54. fxe5 Rg3 55. Rxe6 Rxh3 56. Kf2 Kg8 57. Ra6 Rh5 58. Ra5 Rf5+ 59. Ke3 h5 60. Ke4 Rf1 61. e6 g6 62. Rg5 Kg7 63. Ra5 Kf6 64. Ra6 Re1+ 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1991.??.??"]
[Round "6"]
[White "De Geus, Gerard"]
[Black "Spreeuw, Jaap"]
[Result "0-1"]
[ECO "C14"]
[PlyCount "102"]
[EventDate "1991.??.??"]
[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 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 Bxg5 7. hxg5 Qxg5 8. Nh3 Qe7 9. Nf4 Nc6 10. Bd3 Qb4 11. Bxh7 Nf8 12. Qd3 Qxd4 13. Qxd4 Nxd4 14. 0-0-0 Nc6 15. Nb5 Kd8 16. Bd3 Rxh1 17. Rxh1 Nxe5 18. Rh8 Ke7 19. Nxc7 Nxd3+ 20. Nxd3 Rb8 21. Nb5 Bd7 22. Nd4 Rc8 23. Ne5 Be8 24. Rg8 g6 25. f4 Nd7 26. Ndf3 Nf6 27. Rh8 Nh5 28. Ng5 Nxf4 29. Ngxf7 Nxg2 30. Ng5 Kf6 31. Ngf3 Kg7 32. Rh2 Nf4 33. Rh4 Nh5 34. Kd2 Kf6 35. Rg4 Ng7 36. b3 Nf5 37. Rg2 d4 38. Rg4 Rc5 39. Rxg6+ Bxg6 40. Nd7+ Ke7 41. Nxc5 b6 42. Nd3 Kd6 43. Nfe5 Be8 44. Nf3 Bb5 45. Nde5 Kd5 46. a4 Be8 47. Nd3 a5 48. Nde5 Bh5 49. Kd3 Bxf3 50. Nxf3 e5 51. Nd2 Nd6 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1991.??.??"]
[Round "1"]
[White "De Geus, Gerard"]
[Black "Van 't Veen, Ger"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "65"]
[EventDate "1991.??.??"]
[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 d6 2. d4 Nf6 3. Nc3 g6 4. Bc4 Bg7 5. f3 c6 6. Bb3 Na6 7. Be3 Nc7 8. Qd2 Be6 9. d5 cxd5 10. exd5 Bd7 11. 0-0-0 a5 12. a4 b5 13. Bh6 0-0 14. h4 b4 15. Ne4 Nxe4 16. fxe4 Bg4 17. Nf3 Na6 18. h5 Nc5 19. Bxg7 Nxb3+ 20. cxb3 Bxf3 21. gxf3 Kxg7 22. hxg6 fxg6 23. Qh6+ Kf6 24. f4 e6 25. e5+ dxe5 26. fxe5+ Ke7 27. dxe6 Qc8+ 28. Kb1 Qxe6 29. Qh4+ Ke8 30. Rd6 Qf5+ 31. Ka2 g5 32. Qc4 Rc8 33. Qb5+ 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1991.??.??"]
[Round "5"]
[White "De Geus, Gerard"]
[Black "Vlaming, Jos Pl"]
[Result "1/2-1/2"]
[ECO "C12"]
[PlyCount "42"]
[EventDate "1991.??.??"]
[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 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4 g6 9. h4 h5 10. Qf4 c5 11. Nf3 Qe7 12. Bd3 Nxd2 13. Qxd2 Nc6 14. 0-0 c4 15. Be2 Bd7 16. a4 b6 17. Rfb1 Na5 18. g3 0-0-0 19. Qf4 Rdf8 20. Rb4 Nc6 21. Rbb1 Na5 1/2-1/2

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1991.??.??"]
[Round "7"]
[White "Niks, Eelco"]
[Black "De Geus, Gerard"]
[Result "1/2-1/2"]
[ECO "A57"]
[PlyCount "20"]
[EventDate "1991.??.??"]
[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. Nf3 g6 3. c4 c5 4. d5 b5 5. cxb5 a6 6. b6 Qxb6 7. Nc3 Bg7 8. e4 d6 9. Be2 Nbd7 10. a4 Qb4 1/2-1/2

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1991.??.??"]
[Round "2"]
[White "Strating, Sybolt"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "D93"]
[PlyCount "104"]
[EventDate "1991.??.??"]
[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. Nc3 d5 4. Bf4 Bg7 5. Nf3 0-0 6. e3 c5 7. dxc5 Qa5 8. Rc1 dxc4 9. Bxc4 Nc6 10. 0-0 Qxc5 11. Nb5 Qh5 12. b4 Bg4 13. Bg3 Rad8 14. Qe2 Ne4 15. h3 Bxf3 16. Qxf3 Qxf3 17. gxf3 Nd2 18. Rfd1 Bb2 19. Bc7 Rd7 20. Rb1 a6 21. Be2 Nxb1 22. Rxd7 axb5 23. Bxb5 Bf6 24. Bxc6 bxc6 25. a4 Nc3 26. a5 Nb5 27. Bb6 Ra8 28. Rd8+ Rxd8 29. Bxd8 Kf8 30. f4 Ke8 31. Bb6 Kd7 32. Kf1 e6 33. a6 Nc7 34. a7 Na8 35. Bc5 Be7 36. Bxe7 Kxe7 37. Ke2 Kd6 38. Kd3 f6 39. Kd4 Nb6 40. h4 h6 41. f3 h5 42. e4 Kc7 43. b5 cxb5 44. Kc5 b4 45. Kxb4 Kc6 46. Ka5 Na8 47. Kb4 Kb6 48. Kc4 Nc7 49. f5 gxf5 50. exf5 exf5 51. f4 Kxa7 52. Kc5 Ne6+ 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1991.??.??"]
[Round "4"]
[White "Van der Mee, Andy"]
[Black "De Geus, Gerard"]
[Result "1-0"]
[ECO "B47"]
[PlyCount "57"]
[EventDate "1991.??.??"]
[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. Nc3 Qc7 6. Be2 Nf6 7. 0-0 Nc6 8. Nb3 b5 9. Re1 Bd6 10. f4 b4 11. e5 Qb6+ 12. Kh1 bxc3 13. exf6 Bb4 14. Qd3 cxb2 15. Bxb2 Bxe1 16. fxg7 Rg8 17. Qxh7 Ne7 18. Bd4 Qc7 19. Rxe1 Bb7 20. Bf6 Qxf4 21. Rf1 Qe4 22. Qxe4 Bxe4 23. Nc5 Bxc2 24. Nb7 d5 25. Nd6+ Kd7 26. Nxf7 Nf5 27. Rc1 Rab8 28. Ne5+ Ke8 29. Bh5# 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "2"]
[White "De Geus, Gerard"]
[Black "Klarenbeek, Hans"]
[Result "0-1"]
[ECO "A59"]
[BlackElo "2315"]
[PlyCount "66"]
[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 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. e4 Bxf1 8. Kxf1 d6 9. Nf3 Bg7 10. h3 0-0 11. Kg1 Nbd7 12. Kh2 Qa5 13. Be3 Rfb8 14. Qc2 Ne8 15. Rhc1 Nc7 16. Bg5 Kf8 17. Bd2 Qa6 18. Rab1 Kg8 19. a3 Rb6 20. Bg5 Bxc3 21. bxc3 f6 22. Bf4 Qxa3 23. Rxb6 Nxb6 24. Rb1 Qa6 25. h4 Nc4 26. Qb3 Ne8 27. Nd2 Nxd2 28. Bxd2 Kf7 29. Qc2 Qe2 30. f3 Qf2 31. Kh3 Ng7 32. Qd3 Ra2 33. e5 Nf5 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "6"]
[White "De Geus, Gerard"]
[Black "Knoppert, Erik"]
[Result "0-1"]
[ECO "B22"]
[BlackElo "2305"]
[PlyCount "116"]
[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. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. Bc4 Nb6 7. Bb3 d5 8. exd6 Qxd6 9. 0-0 Be6 10. Bxe6 Qxe6 11. Nxd4 Nxd4 12. Qxd4 Rd8 13. Qb4 Qc6 14. Na3 e6 15. Qg4 h5 16. Qg3 h4 17. Qg4 h3 18. Be3 Rh4 19. Qg5 Rh5 20. Qg4 Qxg2+ 21. Qxg2 hxg2 22. Kxg2 Bxa3 23. bxa3 Nc4 24. Bxa7 Rg5+ 25. Kh1 Ra5 26. Bd4 e5 27. Rae1 Kd7 28. Be3 Rxa3 29. Rg1 g6 30. Bg5 Re8 31. Rb1 Kc6 32. Rb4 Rxc3 33. Rgb1 b6 34. a4 Ra8 35. Bf6 Rc2 36. Kg1 Kc7 37. R1b3 Ra5 38. Rd3 Rc5 39. Bd8+ Kb7 40. Rf3 f5 41. Bxb6 Rd5 42. Rg3 Nxb6 43. Rxg6 Rc6 44. Rg5 e4 45. a5 Rxa5 46. Kg2 Ka6 47. Rg8 Rb5 48. Rd4 Rd5 49. Rb4 Rdd6 50. Kg3 Rc3+ 51. Kg2 Rf6 52. Rb8 Ka7 53. Rg8 Rc2 54. Rg7+ Ka6 55. Rb3 f4 56. h4 e3 57. Ra3+ Kb5 58. Rg5+ Kc6 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "4"]
[White "De Geus, Gerard"]
[Black "Seewald, Pieter C"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "91"]
[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. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Bc4 Nb6 8. Bb5 e6 9. 0-0 Bd7 10. Nc3 d5 11. Bd3 Be7 12. Bf4 Nb4 13. Bb1 Nc4 14. a3 Qa5 15. Qe2 Rc8 16. Ng5 g6 17. h4 Na6 18. Nd1 Qb6 19. Nf3 Ba4 20. b4 h5 21. Ne3 Bd7 22. Bd3 Qc6 23. Ng5 Nc7 24. Qa2 Nb5 25. Nxc4 dxc4 26. Be4 Qb6 27. d5 Nc3 28. Qc2 Nxe4 29. Nxe4 exd5 30. Nd6+ Bxd6 31. exd6 0-0 32. Be5 Kh7 33. Qd2 Qc6 34. Qg5 Rg8 35. Bf4 Rh8 36. Rae1 Be6 37. Rxe6 fxe6 38. Qh6+ Kg8 39. Qxg6+ Kf8 40. Bh6+ Rxh6 41. Qxh6+ Kf7 42. Qxh5+ Kf6 43. Qg5+ Kf7 44. Qe7+ Kg6 45. Re1 Rg8 46. Rxe6+ 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "1"]
[White "Kayser, Eddy"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "A08"]
[PlyCount "50"]
[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. Nf3 c5 2. g3 Nc6 3. Bg2 d5 4. 0-0 e5 5. d3 f6 6. Ne1 Be6 7. Nd2 Qd7 8. e4 d4 9. f4 exf4 10. gxf4 Bg4 11. Bf3 h5 12. a3 0-0-0 13. b4 cxb4 14. axb4 Bxb4 15. Nb3 Nge7 16. Ba3 Bxa3 17. Rxa3 Qd6 18. Qc1 g5 19. f5 Bxf3 20. Nxf3 h4 21. Na5 g4 22. Nd2 g3 23. h3 g2 24. Rf2 Rdg8 25. Ndc4 Qg3 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "5"]
[White "Rijnbergen, Michel"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "B43"]
[PlyCount "100"]
[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 Qc7 6. Be3 Nf6 7. f4 Bb4 8. Bd3 d5 9. e5 Bxc3+ 10. bxc3 Qxc3+ 11. Kf2 Ne4+ 12. Bxe4 dxe4 13. Ne2 Qc6 14. Rb1 Nd7 15. Qc1 0-0 16. Rd1 Qc7 17. Qa3 f6 18. Nd4 Nxe5 19. fxe5 fxe5+ 20. Kg1 exd4 21. Bxd4 e5 22. Qg3 Re8 23. Rf1 Qxc2 24. Rbc1 Qd3 25. Be3 Qd7 26. Bb6 Qg4 27. Rc7 Qxg3 28. hxg3 Be6 29. a3 Bd5 30. Rd1 Bc6 31. Kf2 Re6 32. g4 Rae8 33. g5 Ba4 34. Rb1 Bc6 35. Be3 Rd6 36. Rb3 Rd3 37. Rxd3 exd3 38. g3 Rf8+ 39. Ke1 Rf3 40. Kd2 Rxg3 41. Kxd3 h5 42. gxh6 gxh6 43. Re7 e4+ 44. Ke2 h5 45. Re5 h4 46. Rg5+ Rxg5 47. Bxg5 h3 48. Kf2 e3+ 49. Kg3 e2 50. Bd2 Bg2 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1990.??.??"]
[Round "3"]
[White "Van Oostrum, Gerrit"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "B25"]
[PlyCount "140"]
[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. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. f4 d6 6. Nf3 e6 7. 0-0 Nge7 8. d3 Bd7 9. Rb1 Rb8 10. Be3 Nd4 11. Ne2 Nec6 12. c3 Nxe2+ 13. Qxe2 b5 14. e5 b4 15. c4 Qb6 16. exd6 Nd4 17. Nxd4 cxd4 18. Bd2 Qxd6 19. Rbe1 f5 20. Bf3 Kf7 21. Qg2 Rhc8 22. Re2 Rb6 23. Bc1 Rcb8 24. Rfe1 Ra6 25. b3 Rab6 26. g4 Re8 27. gxf5 exf5 28. Rxe8 Bxe8 29. Bd5+ Kf8 30. Re6 Qd8 31. Rxb6 Qxb6 32. Qe2 Bf7 33. Bf3 Qd6 34. Kg2 Bh6 35. Qe1 Bxf4 36. Bxf4 Qxf4 37. Qxb4+ Kg7 38. Qe7 Qd2+ 39. Qe2 Qg5+ 40. Kf1 Qf4 41. Kg2 h5 42. c5 g5 43. Bxh5 Bxh5 44. Qxh5 g4 45. Qh4 Qf3+ 46. Kg1 Qxd3 47. Qg5+ Kf7 48. Qh5+ Ke6 49. Qg6+ Kd5 50. Qd6+ Ke4 51. c6 Qb1+ 52. Kg2 Qxa2+ 53. Kg1 Qb1+ 54. Kg2 Qc2+ 55. Kg1 Qd1+ 56. Kg2 Qe2+ 57. Kg1 Qd1+ 58. Kg2 Qc2+ 59. Kg1 d3 60. c7 d2 61. Qxd2 Qxd2 62. c8Q Qd1+ 63. Kg2 Qxb3 64. Qa8+ Qd5 65. Qxa7 Qd2+ 66. Kf1 Qf4+ 67. Ke2 Qxh2+ 68. Kf1 Qf4+ 69. Ke2 Qf3+ 70. Kd2 Qd3+ 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "4"]
[White "De Geus, Gerard"]
[Black "Hauwert, Nicolaas"]
[Result "0-1"]
[ECO "C56"]
[BlackElo "2215"]
[PlyCount "42"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[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. d4 exd4 4. Bc4 Nf6 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Neg5 0-0-0 11. Nxe6 fxe6 12. Rxe6 h6 13. Bf4 Qf5 14. Rxc6 bxc6 15. Bg3 Bc5 16. Qe2 d3 17. cxd3 Rhe8 18. Qc2 Qxd3 19. Qa4 Rd7 20. Qa5 Bb6 21. Qf5 Kb7 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "3"]
[White "Hall, G."]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "C80"]
[PlyCount "66"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[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 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. Re1 Nc5 7. Bxc6 dxc6 8. Nxe5 Be7 9. d4 Ne6 10. Be3 0-0 11. c4 f6 12. Nf3 f5 13. d5 cxd5 14. cxd5 Ng5 15. Bxg5 Bxg5 16. Qb3 Kh8 17. Nc3 Bf6 18. Rad1 f4 19. Ne4 Bg4 20. d6 Bxf3 21. Qxf3 cxd6 22. Nxd6 Qc7 23. Qd5 h6 24. b3 b5 25. Qh5 Rad8 26. Ne8 Rxd1 27. Qxd1 Qd8 28. Qh5 Bc3 29. Re6 Qd3 30. h3 f3 31. Rd6 Qe4 32. Rd8 Qe1+ 33. Kh2 Be5+ 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "1"]
[White "Schermer, J."]
[Black "De Geus, Gerard"]
[Result "1/2-1/2"]
[ECO "E94"]
[PlyCount "41"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 Nbd7 6. Be2 0-0 7. 0-0 e5 8. Qc2 exd4 9. Nxd4 Nc5 10. Rd1 Qe7 11. f3 Ne6 12. Nxe6 fxe6 13. Bg5 Qf7 14. Qd2 Nh5 15. g3 e5 16. Nd5 Nf6 17. Rac1 Bh3 18. Qe3 Be6 19. b3 a5 20. a4 b6 21. Kg2 1/2-1/2

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "1"]
[White "Appel, Dirk BA"]
[Black "De Geus, Gerard"]
[Result "1/2-1/2"]
[ECO "B95"]
[PlyCount "51"]
[EventDate "1987.??.??"]
[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 Nf6 5. Nc3 a6 6. Bg5 d6 7. Be2 Be7 8. Qd2 Nbd7 9. 0-0 Nc5 10. Bxf6 Bxf6 11. Rad1 Nd7 12. Kh1 Be7 13. f4 0-0 14. Rf3 Nf6 15. Rg3 Kh8 16. e5 Ne8 17. Nf3 f5 18. Rh3 Qc7 19. Ng5 Bxg5 20. exd6 Qxd6 21. Qxd6 Nxd6 22. fxg5 Nf7 23. g6 Nh6 24. gxh7 b5 25. Rg3 Kxh7 26. b4 1/2-1/2

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "7"]
[White "De Geus, Gerard"]
[Black "De Haas, Piet"]
[Result "1-0"]
[ECO "E88"]
[PlyCount "89"]
[EventDate "1987.??.??"]
[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 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 c6 7. Bd3 e5 8. Nge2 Nbd7 9. 0-0 Ne8 10. d5 c5 11. Qd2 a6 12. Bh6 Qe7 13. a3 f6 14. Bxg7 Nxg7 15. b4 h6 16. Rab1 Rb8 17. Rb3 h5 18. Rfb1 Kh7 19. bxc5 Nxc5 20. Rb4 Qc7 21. Kh1 Bd7 22. f4 Rfc8 23. Rf1 Rf8 24. Rbb1 Qd8 25. Qe3 Qe7 26. Rb2 Rfe8 27. Rfb1 Qd8 28. Nc1 f5 29. N1e2 exf4 30. Nxf4 fxe4 31. Be2 Nf5 32. Qh3 h4 33. Bg4 Qg5 34. Ne6 Bxe6 35. dxe6 Rxe6 36. Nd5 Nd3 37. Ra2 e3 38. Bxf5 gxf5 39. Qf3 Nf2+ 40. Kg1 h3 41. Nf4 Re5 42. Nxh3 Nxh3+ 43. Qxh3+ Kg7 44. Qf3 f4 45. Re2 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "5"]
[White "De Geus, Gerard"]
[Black "Rijnbergen, Michel"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "52"]
[EventDate "1987.??.??"]
[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. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 b6 7. Nc3 Nxc3 8. bxc3 Qc7 9. Bb2 Bb7 10. Be2 Nc6 11. 0-0 Be7 12. c4 d6 13. d5 Nxe5 14. Nd4 exd5 15. cxd5 0-0 16. Rc1 Qd8 17. Nf5 Bf6 18. Ba3 Be7 19. Re1 Bc8 20. Nxe7+ Qxe7 21. Bb5 Qf6 22. Rc3 Bg4 23. Qd2 Rac8 24. Bb2 Rxc3 25. Bxc3 Rc8 26. f4 Rxc3 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "2"]
[White "De Geus, Gerard"]
[Black "Roggeveen, Pieter"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "64"]
[EventDate "1987.??.??"]
[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 d6 2. d4 Nf6 3. f3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bc4 Ke7 7. Be3 Be6 8. Nd2 Bxc4 9. Nxc4 Ke6 10. 0-0-0 Nc6 11. Ne2 b5 12. Nd2 Na5 13. Kb1 Bd6 14. c4 bxc4 15. Rc1 Rhb8 16. Nxc4 Nxc4 17. Rxc4 Rb7 18. Rhc1 Nd7 19. Nc3 Nb6 20. Bxb6 cxb6 21. Nd5 Rd8 22. b4 Kd7 23. a4 Rf8 24. g4 a5 25. Kb2 axb4 26. Kb3 Ra8 27. Nxb4 b5 28. axb5 Rxb5 29. Rb1 Rxb4+ 30. Rxb4 Bxb4 31. Kc4 Bd6 32. Rb7+ Bc7 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "4"]
[White "De Geus, Gerard"]
[Black "Van der Meiden, Dirk"]
[Result "1-0"]
[ECO "C14"]
[PlyCount "57"]
[EventDate "1987.??.??"]
[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. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 a6 7. Qg4 f5 8. Qh5+ g6 9. Qh6 Bxg5 10. hxg5 Kf7 11. Nge2 Qf8 12. Nf4 Qxh6 13. Rxh6 Nf8 14. 0-0-0 b6 15. Be2 Nc6 16. Bf3 Ne7 17. Rdh1 Ra7 18. Nce2 c6 19. g4 a5 20. Ng3 Ng8 21. Nxg6 Nxg6 22. Rxh7+ Kf8 23. Rxa7 Rxh1+ 24. Nxh1 f4 25. Be2 N8e7 26. Ba6 Bxa6 27. Rxa6 Nc8 28. Ra8 Nge7 29. a3 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "3"]
[White "De Waal, Jacobus"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "A57"]
[PlyCount "46"]
[EventDate "1987.??.??"]
[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 c5 3. d5 b5 4. b3 bxc4 5. bxc4 d6 6. g3 Nbd7 7. Bh3 g6 8. Bb2 Bg7 9. Nf3 0-0 10. Bc3 Nb6 11. Bxc8 Qxc8 12. Qd3 Rb8 13. 0-0 Na4 14. Nbd2 Nxc3 15. Qxc3 Nxd5 16. Qa5 Bxa1 17. Rxa1 Nf6 18. Nb3 Qe6 19. Nbd2 Ne4 20. Qa3 Nxd2 21. Nxd2 Qxe2 22. Qc3 Rb6 23. Nb3 Rb4 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "6"]
[White "Hauwert, Nicolaas"]
[Black "De Geus, Gerard"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2220"]
[PlyCount "123"]
[EventDate "1987.??.??"]
[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. Bd3 e6 8. Be3 Be7 9. 0-0 Nbd7 10. a4 b6 11. Qe2 Nc5 12. Nf3 Bb7 13. Bd4 0-0-0 14. b4 Nxd3 15. cxd3 Kb8 16. Rfc1 Rc8 17. a5 b5 18. Bf2 Ba8 19. h3 Qb7 20. Qe3 Rc7 21. Ne2 Rhc8 22. Rxc7 Rxc7 23. Rc1 Rxc1+ 24. Nxc1 h6 25. Ne2 Nd7 26. Qd4 Bf8 27. Ng3 d5 28. e5 g6 29. Qc3 Qc7 30. Be1 Qxc3 31. Bxc3 Kc7 32. Nd4 Nb8 33. Nge2 Bc6 34. g4 Bd7 35. Kg2 Be7 36. Kg3 Bc8 37. f5 gxf5 38. gxf5 exf5 39. Nf4 Be6 40. Ndxe6+ fxe6 41. Nxe6+ Kd7 42. Nd4 Bg5 43. Nxf5 Nc6 44. h4 Bc1 45. Nd4 Nxe5 46. Ne2 Nxd3 47. Nd4 Bf4+ 48. Kg4 Bd6 49. Ne2 Ne5+ 50. Kh5 Nf7 51. Kg6 Ke6 52. Nd4+ Ke7 53. Nf5+ Ke6 54. Ng7+ Ke7 55. Nf5+ Ke6 56. Ng7+ Ke7 57. h5 Be5 58. Bd2 Bxg7 59. Kxg7 d4 60. Kg6 Ke6 61. Be1 d3 62. Bc3 1/2-1/2

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "6"]
[White "Bierenbroodspot, Paul"]
[Black "De Geus, Gerard"]
[Result "1-0"]
[ECO "B35"]
[PlyCount "63"]
[EventDate "1986.??.??"]
[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 g6 6. Bc4 Bg7 7. 0-0 0-0 8. Bb3 Nc6 9. h3 Bd7 10. Be3 Rc8 11. f4 Qa5 12. Qf3 Qh5 13. Nxc6 Rxc6 14. Qxh5 Nxh5 15. Nd5 Ra6 16. Nxe7+ Kh8 17. f5 Re8 18. Nd5 Rxe4 19. f6 Bf8 20. Rf3 Bc6 21. Kf2 Re5 22. c4 Rf5 23. Bd4 Bh6 24. Rxf5 gxf5 25. Nb4 Ra5 26. Nxc6 bxc6 27. Re1 Kg8 28. Re8+ Bf8 29. Bc3 Rc5 30. Kf3 f4 31. Bb4 Rf5 32. Rxf8+ 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "2"]
[White "De Geus, Gerard"]
[Black "De Haas, Piet"]
[Result "1-0"]
[ECO "C18"]
[PlyCount "67"]
[EventDate "1986.??.??"]
[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. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 c5 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Qd3 Nbc6 11. f4 dxc3 12. Ne2 Bd7 13. Rb1 0-0-0 14. Nxc3 Na5 15. Nb5 Bxb5 16. Qxb5 d4 17. Bd2 Nac6 18. g3 Nd5 19. Bd3 f6 20. exf6 Nxf6 21. Kd1 Ng4 22. Kc1 Rd5 23. Qb3 Nf2 24. Be4 Nxh1 25. Bxd5 Rh8 26. Bxh1 Rxh2 27. Qxe6+ Kd8 28. Bxc6 bxc6 29. Qf6+ Ke8 30. Qe5+ Qxe5 31. fxe5 c5 32. Bf4 c4 33. Rb4 c3 34. Rxd4 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "4"]
[White "De Geus, Gerard"]
[Black "Roggeveen, Pieter"]
[Result "1-0"]
[ECO "B73"]
[PlyCount "43"]
[EventDate "1986.??.??"]
[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 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Be2 c5 7. 0-0 cxd4 8. Nxd4 Nc6 9. Be3 Bd7 10. Kh1 Nxd4 11. Bxd4 Bc6 12. Bf3 Qa5 13. Be3 Qb4 14. Qd2 Qxb2 15. a3 Ng4 16. Bd4 Bxd4 17. Qxd4 h5 18. Bxg4 hxg4 19. Rfb1 Qxc2 20. Ra2 e5 21. fxe5 dxe5 22. Qe3 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "5"]
[White "De Geus, Gerard"]
[Black "Van der Hauw, Henk"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "75"]
[EventDate "1986.??.??"]
[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. c3 d5 3. exd5 Qxd5 4. Nf3 Nc6 5. Na3 Nf6 6. Bc4 Qd8 7. 0-0 e6 8. Nc2 Qc7 9. d4 Bd7 10. dxc5 Bxc5 11. Be3 Be7 12. Ncd4 a6 13. Nxc6 Bxc6 14. Be2 0-0 15. Nd4 Bd7 16. c4 Bd6 17. h3 e5 18. Nf3 Rac8 19. Rc1 Bc5 20. Bxc5 Qxc5 21. a3 e4 22. b4 Qe7 23. Ne1 Rc6 24. Qd2 Rfc8 25. Nc2 Rd6 26. Qf4 Bc6 27. Ne3 g6 28. Rfd1 Rcd8 29. Rxd6 Rxd6 30. Rd1 Rxd1+ 31. Bxd1 Kg7 32. Qg5 Qe6 33. b5 axb5 34. cxb5 Bd5 35. Bg4 Nxg4 36. hxg4 Bb3 37. Nf5+ Kf8 38. Qh6+ 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "7"]
[White "Nicolai, Erik"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "A17"]
[PlyCount "50"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. 0-0 Be7 6. Nc3 0-0 7. b3 Ne4 8. Nxe4 Bxe4 9. d3 Bb7 10. e4 d5 11. Qc2 d4 12. a3 c5 13. e5 Nd7 14. Re1 f5 15. Nxd4 Bxg2 16. Nxe6 Qc8 17. Nxf8 Bb7 18. Nxd7 Qc6 19. f3 Qxf3 20. Re2 Qh1+ 21. Kf2 Qxh2+ 22. Kf1 Qh1+ 23. Kf2 Qg2+ 24. Ke1 Qg1+ 25. Kd2 Bg5+ 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "1"]
[White "Spaan, Hein"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "70"]
[EventDate "1986.??.??"]
[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. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nc6 6. Be2 Nf6 7. 0-0 cxd4 8. cxd4 Be7 9. Nc3 Qd8 10. Bg5 0-0 11. a3 Nd5 12. Bxe7 Ncxe7 13. Bd3 Nf4 14. Be4 Bd7 15. Ne5 Neg6 16. Re1 Rc8 17. Bxb7 Rb8 18. Qf3 Qc7 19. Be4 f5 20. Bb1 Rxb2 21. Ra2 Rb3 22. Rc2 Nxg2 23. Qxg2 Nxe5 24. dxe5 Rxc3 25. Rec1 Rxc2 26. Rxc2 Qxe5 27. Qf1 Rf6 28. Qd1 Rg6+ 29. Kh1 Rh6 30. f3 g5 31. Ba2 g4 32. Re2 Qf4 33. Bxe6+ Rxe6 34. Rxe6 Bxe6 35. Qd8+ Kf7 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "3"]
[White "Vlaming, Jos Pl"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "B72"]
[PlyCount "58"]
[EventDate "1986.??.??"]
[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 Nc6 6. Bc4 g6 7. 0-0 Bg7 8. h3 0-0 9. Be3 Bd7 10. Qd2 Rc8 11. Bb3 Na5 12. Bh6 Nc4 13. Bxc4 Bxh6 14. Bxf7+ Kg7 15. f4 Rxf7 16. g4 e5 17. g5 exd4 18. gxf6+ Qxf6 19. Nd5 Qh4 20. Qxd4+ Kg8 21. Rf2 Bxh3 22. Rd1 Qg3+ 23. Kh1 Bg7 24. Qxa7 Rc5 25. Rdd2 Bd4 26. Qb8+ Kg7 27. Qxd6 Bg2+ 28. Kg1 Qh3 29. Rxd4 Qh1# 0-1

[Event "Alkmaar ACCOM op-B"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "7"]
[White "De Geus, Gerard"]
[Black "Kayser, Eddy"]
[Result "1/2-1/2"]
[ECO "C56"]
[PlyCount "46"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Bg5 h6 11. Bd2 Bb4 12. c3 dxc3 13. bxc3 Be7 14. Nd4 Nxd4 15. cxd4 Qd5 16. Bf4 0-0 17. Bxc7 Rac8 18. Be5 f6 19. Bf4 Rc4 20. Qe2 Bb4 21. Red1 Rxd4 22. Rxd4 Qxd4 23. Rd1 Qc4 1/2-1/2

[Event "Alkmaar ACCOM op-B"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "4"]
[White "De Geus, Gerard"]
[Black "Meijer, Willem"]
[Result "1/2-1/2"]
[ECO "B16"]
[PlyCount "100"]
[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 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Bc4 Bf5 7. Ne2 e6 8. Ng3 Bg6 9. f4 Bd6 10. 0-0 f5 11. a3 Nd7 12. b4 Nf6 13. Bd3 Rg8 14. Qe2 Kf8 15. h3 h5 16. Bd2 h4 17. Nh1 Be7 18. c3 Qd5 19. Bc4 Bh5 20. Bxd5 Bxe2 21. Rf2 cxd5 22. Rxe2 Ne4 23. Nf2 Nxf2 24. Kxf2 Rc8 25. Kg1 Ke8 26. Kh2 Kd7 27. a4 Rg3 28. Rg1 Bd6 29. Rf2 Rcg8 30. Rff1 Rd3 31. Be1 Be7 32. Rf2 Bd6 33. Rgf1 Rgg3 34. Rd2 Rxd2 35. Bxd2 Rd3 36. Be1 Rd1 37. g3 hxg3+ 38. Kxg3 Rd3+ 39. Rf3 Rd1 40. Rf1 Be7 41. Kg2 Ra1 42. a5 b6 43. axb6 axb6 44. h4 Ra8 45. Rh1 Rh8 46. Bf2 Kc6 47. h5 Bf8 48. Kf3 Kb5 49. Ke2 Kc4 50. Kd2 Bh6 1/2-1/2

[Event "Alkmaar ACCOM op-B"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "1"]
[White "De Geus, Gerard"]
[Black "Roet, Siem"]
[Result "1/2-1/2"]
[ECO "B74"]
[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. e4 g6 2. d4 Bg7 3. f4 d6 4. Nf3 Nf6 5. Nc3 0-0 6. Be2 a6 7. a4 c5 8. 0-0 cxd4 9. Nxd4 Nc6 10. Be3 Bd7 11. Kh1 Rc8 12. Nb3 Na5 13. Nxa5 Qxa5 14. Bd4 Bc6 15. b4 Qd8 16. Bd3 Bd7 17. Qd2 e5 18. fxe5 Ng4 19. Nd5 Nxe5 20. Bb6 Qh4 21. g3 Qh3 22. Ne7+ Kh8 23. Nxc8 Rxc8 24. Bd4 f5 25. exf5 Bc6+ 26. Kg1 Nf3+ 27. Rxf3 Bxd4+ 28. Re3 Bxa1 29. c3 Bd5 30. Bc2 Bf7 31. Qc1 Bd5 1/2-1/2

[Event "Alkmaar ACCOM op-B"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "3"]
[White "De Geus, Gerard"]
[Black "Van der Hauw, Henk"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "36"]
[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. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Be2 g6 8. 0-0 Bg7 9. exd6 Qxd6 10. Nc3 0-0 11. Bg5 Be6 12. Ne4 Qb4 13. a3 Qxb2 14. Rb1 Qxa3 15. Rxb7 Rab8 16. Bc1 Qa2 17. Rxb8 Rxb8 18. Neg5 Nc3 0-1

[Event "Alkmaar ACCOM op-B"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "2"]
[White "De Haro, Martim Alfonso"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "A05"]
[PlyCount "54"]
[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d3 c5 6. e4 Nc6 7. Re1 d6 8. Nbd2 Bd7 9. e5 dxe5 10. Nxe5 Nxe5 11. Rxe5 Ng4 12. Re4 Ne5 13. Nf3 Bc6 14. Re1 Qd5 15. Nh4 Qd7 16. Bxc6 Nxc6 17. Nf3 Rfd8 18. Qe2 Rac8 19. a3 Bf6 20. Rb1 Nd4 21. Nxd4 cxd4 22. Bf4 Rc6 23. Red1 Rdc8 24. Rd2 Re6 25. Qf3 g5 26. Bxg5 Bxg5 27. h4 Bxd2 0-1

[Event "Alkmaar ACCOM op-B"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "6"]
[White "Van Zutphen, P."]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "B71"]
[PlyCount "165"]
[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 g6 6. f4 Nc6 7. Bb5 Bd7 8. Bxc6 bxc6 9. e5 Nd5 10. Nxd5 cxd5 11. exd6 e6 12. 0-0 Bxd6 13. b3 0-0 14. Bb2 Qh4 15. Qd2 e5 16. Nf3 Qxf4 17. Qxf4 exf4 18. Rad1 Be6 19. Kh1 Rac8 20. c4 Rc5 21. Ba3 Rc6 22. Bxd6 Rxd6 23. c5 Ra6 24. Rd2 Rc8 25. Rc1 Ra5 26. c6 Kf8 27. Nd4 Ke7 28. Rf2 g5 29. h3 h5 30. a4 Ra6 31. a5 Bd7 32. Re1+ Be6 33. b4 Raxc6 34. Nxc6+ Rxc6 35. b5 Rd6 36. b6 axb6 37. a6 Rd8 38. a7 Ra8 39. Rb1 Kd7 40. Rxb6 Kc7 41. Rb8 Rxb8 42. axb8Q+ Kxb8 43. Rc2 Kb7 44. Kg1 f3 45. h4 g4 46. gxf3 gxf3 47. Kf2 Bf5 48. Rc1 Be4 49. Ke3 Kb6 50. Rc8 Kb5 51. Rh8 Bg6 52. Kxf3 Kc4 53. Ke3 d4+ 54. Kd2 Kd5 55. Rd8+ Ke5 56. Re8+ Kf4 57. Rd8 d3 58. Rd4+ Be4 59. Rd7 Bg6 60. Rd4+ Kg3 61. Ra4 Bf5 62. Ra8 Be6 63. Kxd3 Kxh4 64. Ke3 Kg3 65. Ra1 h4 66. Rg1+ Kh2 67. Kf2 Bd5 68. Rg4 Kh3 69. Rg1 Be4 70. Rg7 Bg6 71. Kg1 Kg3 72. Rg8 h3 73. Rh8 Bf5 74. Rg8+ Bg4 75. Rh8 f5 76. Kh1 f4 77. Rh6 f3 78. Rh8 Kf2 79. Rg8 Be6 80. Rg6 Bf5 81. Rg5 Bd3 82. Kh2 Bf1 83. Kh1 0-1

[Event "Alkmaar ACCOM op-B"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "5"]
[White "Veenstra, Wopke"]
[Black "De Geus, Gerard"]
[Result "1-0"]
[ECO "C16"]
[PlyCount "109"]
[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 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. Qg4 f5 6. Qh5+ g6 7. Qh3 b6 8. Bd2 Ba6 9. Bxa6 Nxa6 10. Qd3 Nb8 11. Nf3 c5 12. Ne2 Nc6 13. c3 c4 14. Qc2 Bf8 15. Qc1 b5 16. h4 a5 17. h5 Nge7 18. Bh6 b4 19. Bxf8 Rxf8 20. Nf4 Nd8 21. Ng5 h6 22. Nh7 g5 23. Nxf8 Kxf8 24. Ne2 Qb5 25. Rh3 Nc8 26. g4 fxg4 27. Rh1 Ne7 28. Ng3 Nf5 29. Qc2 Qd7 30. a3 b3 31. Qe2 Nc6 32. Qxg4 Ke7 33. 0-0-0 Rf8 34. Ne2 Kd8 35. Rd2 Qh7 36. f4 Rg8 37. Rg1 Nce7 38. fxg5 Rxg5 39. Qf3 Qg8 40. Rxg5 Qxg5 41. Nf4 Qg1+ 42. Rd1 Qg5 43. Rd2 Qg1+ 44. Qd1 Qxd1+ 45. Rxd1 Ng7 46. Rg1 Nef5 47. Rg6 Ke7 48. Kd2 Kf7 49. Rf6+ Ke7 50. Nxe6 Ng3 51. Nxg7 Ne4+ 52. Ke3 Nxf6 53. Nf5+ Ke6 54. exf6 Kxf6 55. Kf4 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1984.??.??"]
[Round "?"]
[White "Andriessen, Wim"]
[Black "De Geus, Gerard"]
[Result "1-0"]
[ECO "A39"]
[PlyCount "35"]
[EventDate "1984.??.??"]
[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 g6 2. g3 Bg7 3. Bg2 Nf6 4. Nc3 0-0 5. Nf3 c5 6. d4 cxd4 7. Nxd4 Nc6 8. 0-0 Qb6 9. Nc2 d6 10. Ne3 Ng4 11. Ncd5 Qd4 12. Qb3 Nxe3 13. Bxe3 Qxb2 14. Qxb2 Bxb2 15. Rab1 Bg7 16. Nc7 Bf5 17. Rxb7 Bc8 18. Rb5 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1984.??.??"]
[Round "?"]
[White "Appel, Dirk BA"]
[Black "De Geus, Gerard"]
[Result "1/2-1/2"]
[ECO "C07"]
[PlyCount "18"]
[EventDate "1984.??.??"]
[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 e6 2. d4 d5 3. Nd2 c5 4. c3 Nc6 5. Ngf3 cxd4 6. cxd4 dxe4 7. Nxe4 Bb4+ 8. Nc3 Nf6 9. Bd3 Nd5 1/2-1/2

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1984.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "Broek, Thomas"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "99"]
[EventDate "1984.??.??"]
[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 Be7 7. Qe2 Nf6 8. Ne5 0-0 9. 0-0 Re8 10. Be3 Bd6 11. f4 Bd7 12. Nd2 Nc6 13. c3 Qe7 14. Rae1 a6 15. Ndf3 h6 16. Nxd7 Qxd7 17. Ne5 Qc8 18. Qc2 Ne7 19. Bf2 Kf8 20. Bh4 Nfg8 21. f5 f6 22. Qd1 fxe5 23. f6 gxf6 24. Bxf6 Nxf6 25. Rxf6+ Kg7 26. Qh5 Kxf6 27. Rf1+ Nf5 28. Bxf5 Qxf5 29. Rxf5+ Ke7 30. Rf7+ Kd8 31. Qg4 Re7 32. Rxe7 Kxe7 33. Qg7+ Ke6 34. Qxh6+ Kd7 35. Qg7+ Kc6 36. dxe5 Bc5+ 37. Kh1 Rf8 38. h4 Rf1+ 39. Kh2 Bf8 40. Qg6+ Kc5 41. Qd3 Ra1 42. b4+ Kc6 43. Qg6+ Kd7 44. Qf7+ Be7 45. Qxd5+ Kc8 46. Qe6+ Kd8 47. h5 c6 48. h6 Rf1 49. h7 Rf8 50. Qg8 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1984.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "De Haas, Piet"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "35"]
[EventDate "1984.??.??"]
[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. d4 exd4 4. Bc4 Bc5 5. 0-0 Nf6 6. e5 d5 7. exf6 dxc4 8. Re1+ Be6 9. Ng5 Qd5 10. Nc3 Qf5 11. Nce4 Bb6 12. Ng3 Qa5 13. fxg7 Rg8 14. Rxe6+ fxe6 15. Qh5+ Kd7 16. Qf7+ Ne7 17. Qxe6+ Ke8 18. Nh5 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1984.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "Nicolai, Erik"]
[Result "1-0"]
[ECO "B03"]
[PlyCount "88"]
[EventDate "1984.??.??"]
[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 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Bg4 10. Be2 Bxf3 11. gxf3 Qh4+ 12. Bf2 Qf4 13. Qc1 Qxc1+ 14. Rxc1 Be7 15. f4 0-0-0 16. d5 exd5 17. Bxb6 axb6 18. Bg4+ Kb8 19. cxd5 Nd4 20. Kd2 g5 21. Kd3 h5 22. Kxd4 hxg4 23. f5 c6 24. d6 f6 25. Ke4 Bf8 26. Rcd1 fxe5 27. Kxe5 Bg7+ 28. f6 Rde8+ 29. Kf5 Ref8 30. Ne4 Bxf6 31. Nxf6 Rh6 32. d7 Rhxf6+ 33. Kxg5 Rf5+ 34. Kxg4 Rd5 35. Rxd5 cxd5 36. Rc1 Rd8 37. Rc8+ Rxc8 38. dxc8Q+ Kxc8 39. Kf5 Kd7 40. Ke5 Kc6 41. h4 Kc5 42. h5 d4 43. Ke4 Kc4 44. h6 d3 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1984.??.??"]
[Round "?"]
[White "Kayser, Eddy"]
[Black "De Geus, Gerard"]
[Result "1/2-1/2"]
[ECO "A05"]
[PlyCount "52"]
[EventDate "1984.??.??"]
[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 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d3 d6 6. e4 Bg4 7. h3 Be6 8. Ng5 Bc8 9. f4 c6 10. c3 e5 11. Be3 Nh5 12. Kh2 Bh6 13. Qd2 f6 14. Nf3 exf4 15. gxf4 d5 16. Na3 dxe4 17. dxe4 Qe7 18. Nd4 Nd7 19. Bf3 Ng7 20. Qf2 f5 21. exf5 Nxf5 22. Nxf5 Rxf5 23. Bg4 Rf7 24. Rae1 Nf6 25. Bxc8 Rxc8 26. Qh4 Nh5 1/2-1/2

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1984.??.??"]
[Round "?"]
[White "Wouterson, R."]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "C16"]
[PlyCount "72"]
[EventDate "1984.??.??"]
[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 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. Bd2 Bxc3 6. Bxc3 b6 7. g3 Ba6 8. Bg2 Ne7 9. Ne2 Nbc6 10. 0-0 Nf5 11. Re1 0-0-0 12. a4 g5 13. b4 Nce7 14. b5 Bb7 15. Qd3 h5 16. a5 h4 17. g4 h3 18. Bh1 Nh4 19. axb6 axb6 20. Ra7 f5 21. exf6 Ng8 22. Bd2 Nxf6 23. Qa3 Qxb5 24. Nc3 Qc6 25. Qe7 Nxg4 26. Rxe6 Rhe8 27. Qxe8 Qxe8 28. Rxe8 Rxe8 29. Ra1 Rf8 30. Rf1 Nf3+ 31. Bxf3 Rxf3 32. Ne2 Ba6 33. Ng3 Bxf1 34. Nxf1 Rxf2 35. Bxg5 Rg2+ 36. Kh1 Nf2# 0-1

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1983.??.??"]
[Round "?"]
[White "Andriessen, Wim"]
[Black "De Geus, Gerard"]
[Result "1-0"]
[ECO "A38"]
[PlyCount "81"]
[EventDate "1983.??.??"]
[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 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 c5 6. 0-0 d5 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. d3 Nc6 10. Be3 Qh5 11. Rc1 b6 12. Ng5 Bg4 13. Bxc6 Bxe2 14. Qb3 Rad8 15. Rfe1 h6 16. Nh3 g5 17. Kg2 Bxd3 18. f3 Rd6 19. Bb5 g4 20. Nf4 gxf3+ 21. Kg1 c4 22. Bxc4 Bxc4 23. Nxh5 Bxb3 24. Nxg7 Bxa2 25. Nf5 Re6 26. Kf2 Bd5 27. Bxh6 Re8 28. Rxe6 fxe6 29. Nd4 Kh7 30. Bf4 Rf8 31. Rc7 Kg6 32. h4 a6 33. Rxe7 Rc8 34. Rc7 Rf8 35. Rc3 b5 36. Re3 Rc8 37. Nxf3 b4 38. g4 a5 39. h5+ Kh7 40. Ng5+ Kg8 41. h6 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1983.??.??"]
[Round "?"]
[White "Appel, Dirk BA"]
[Black "De Geus, Gerard"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "57"]
[EventDate "1983.??.??"]
[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 e6 2. d4 c5 3. c3 d5 4. e5 Qb6 5. Nf3 Bd7 6. a4 Nc6 7. Be2 cxd4 8. cxd4 Bb4+ 9. Nc3 Nge7 10. 0-0 Nf5 11. Be3 Rc8 12. Bd3 Nce7 13. Na2 0-0 14. Nxb4 Nxe3 15. fxe3 Qxb4 16. Bxh7+ Kxh7 17. Ng5+ Kh6 18. Qg4 Qd2 19. Qh4+ Kg6 20. Qh7+ Kxg5 21. h4+ Kg4 22. Rf4+ Kg3 23. Rf3+ Kg4 24. Kh2 Ng6 25. Raf1 Qxg2+ 26. Kxg2 Nxh4+ 27. Qxh4+ Kxh4 28. Rh3+ Kg4 29. Rg3+ 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1983.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "Adema, Ruud"]
[Result "1-0"]
[ECO "B03"]
[PlyCount "81"]
[EventDate "1983.??.??"]
[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 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Be2 Qd7 10. Nf3 0-0-0 11. a3 f6 12. b4 Bg4 13. c5 Bxf3 14. cxb6 Bxe2 15. bxa7 Nxa7 16. Qxe2 fxe5 17. dxe5 Nc6 18. Rd1 Qf7 19. Rxd8+ Kxd8 20. b5 Nb8 21. Ne4 Nd7 22. Ng5 Qg6 23. 0-0 Kc8 24. Nf7 Rg8 25. Qd2 Bc5 26. Bxc5 Nxc5 27. Qa5 Nd7 28. Rc1 b6 29. Rxc7+ Kxc7 30. Qa7+ Kc8 31. Nd6+ Kd8 32. Qa8+ Ke7 33. Qxg8 Qb1+ 34. Kf2 Qb2+ 35. Kf3 Qxe5 36. Nc8+ Kf6 37. Qd8+ Kg6 38. Ne7+ Kf7 39. Qxd7 Qf6+ 40. Nf5+ Kg6 41. Qxg7+ 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1983.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "Kraaijeveld, Jan"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "47"]
[EventDate "1983.??.??"]
[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. d4 exd4 4. Bc4 Be7 5. 0-0 Nf6 6. e5 Ne4 7. Bd5 Nc5 8. Nxd4 Nxd4 9. Qxd4 Ne6 10. Qg4 g6 11. Nc3 0-0 12. Bh6 Ng7 13. Rad1 c6 14. Bb3 d5 15. Qf4 Qc7 16. Bxd5 cxd5 17. Nxd5 Qc5 18. b4 Qxd5 19. Rxd5 Be6 20. Rd2 Rfc8 21. Rfd1 Rc4 22. Qf3 Rb8 23. Qd3 Rxb4 24. Qa3 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1983.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "Pielaet, S."]
[Result "1/2-1/2"]
[ECO "D00"]
[PlyCount "97"]
[EventDate "1983.??.??"]
[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 d5 2. d4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Qxf3 c6 6. h3 Be6 7. Bd3 g6 8. Be3 Bg7 9. Nge2 Nd5 10. Nxd5 Qxd5 11. Qf2 Na6 12. Nf4 Qd7 13. Nxe6 Qxe6 14. Bxa6 bxa6 15. 0-0 0-0 16. c3 Rab8 17. Rfe1 Qd5 18. b3 Rb7 19. Rad1 Bf6 20. c4 Qh5 21. d5 Bc3 22. Rf1 Rd7 23. Rc1 Bf6 24. dxc6 Rc7 25. Bxa7 Rxc6 26. b4 Rd6 27. a4 Rfd8 28. Qf3 Qe5 29. Rfd1 Qb2 30. b5 axb5 31. axb5 Rd3 32. Rb1 Bd4+ 33. Kh1 Rxd1+ 34. Rxd1 e5 35. Qf6 Rd7 36. Bb8 Qe2 37. Rxd4 exd4 38. Be5 Qd1+ 39. Kh2 Kf8 40. c5 Qc2 41. Bd6+ Rxd6 42. cxd6 Kg8 43. d7 Qc7+ 44. Kh1 Qxd7 45. b6 d3 46. b7 Qxb7 47. Qd8+ Kg7 48. Qd4+ f6 49. Qxd3 1/2-1/2

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1983.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "Van Oene, Egbert"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "79"]
[EventDate "1983.??.??"]
[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. c3 Qc7 4. d4 e6 5. Bf4 Be7 6. Na3 a6 7. dxc5 Qxc5 8. Nc4 Qc6 9. Bxd6 b5 10. Bxe7 Kxe7 11. Ne3 Qxe4 12. Bd3 Qb7 13. Qe2 Nh6 14. Nd4 Rd8 15. Ndf5+ Nxf5 16. Nxf5+ Kf8 17. Be4 Qa7 18. Nd4 Bb7 19. Nxe6+ fxe6 20. Qf3+ Kg8 21. Bxb7 Rf8 22. Bxa8 Rxf3 23. Bxf3 Nd7 24. 0-0 Ne5 25. Be4 Nc4 26. b3 Nd2 27. Rfe1 Qc5 28. Rac1 Qg5 29. Rcd1 Qf4 30. Bb7 Qg5 31. Re2 Nxb3 32. axb3 Qc5 33. Bxa6 Qxc3 34. Re3 Qc6 35. Ra1 h6 36. Ree1 Kf7 37. h3 g5 38. Rec1 Qb6 39. Bc8 Kf6 40. Ra6 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1983.??.??"]
[Round "?"]
[White "Van der Sluijs, Lothar"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "B78"]
[PlyCount "62"]
[EventDate "1983.??.??"]
[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 g6 6. Be3 Bg7 7. Qd2 Nc6 8. f3 0-0 9. Bc4 Bd7 10. 0-0-0 Ne5 11. Bb3 Rc8 12. h4 h5 13. Bg5 a6 14. Nde2 b5 15. f4 Neg4 16. Rhf1 Bc6 17. Ng3 b4 18. Nd5 Nxd5 19. exd5 Bb5 20. f5 Bxf1 21. Rxf1 a5 22. Qe2 Be5 23. Bf4 Bxf4+ 24. Rxf4 Qb6 25. Kd2 Qb7 26. Nxh5 Ne5 27. Ng3 a4 28. Bxa4 Qxd5+ 29. Ke1 Qxa2 30. Bb3 Qxb2 31. fxg6 Qc1+ 0-1

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1982.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "Andriessen, Wim"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "44"]
[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 c5 2. c3 e6 3. d4 d5 4. e5 Qb6 5. Nf3 Bd7 6. Na3 cxd4 7. Nxd4 Bxa3 8. bxa3 Ne7 9. Qb3 Qc7 10. f4 0-0 11. c4 Na6 12. Nb5 Bxb5 13. cxb5 Nc5 14. Qc2 Rac8 15. Be2 Qb6 16. Be3 Nf5 17. Bf2 Qa5+ 18. Qd2 Qxa3 19. 0-0 Ne4 20. Qd1 Ne3 21. Qd3 Rc3 22. Qb1 Nxf1 0-1

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1982.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "De Haas, Piet"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "61"]
[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 c5 2. c3 Nf6 3. e5 Nd5 4. d4 e6 5. Bd3 Nc6 6. Nf3 cxd4 7. cxd4 Qb6 8. 0-0 Nxd4 9. Be4 Nxf3+ 10. Qxf3 Ne7 11. Nd2 Nc6 12. Nc4 Qc5 13. Nd6+ Bxd6 14. exd6 Qxd6 15. Bf4 Qe7 16. Qg3 Qf6 17. Rac1 Nd4 18. Bd3 Nc6 19. Bd6 Qxb2 20. Rfd1 b6 21. Rxc6 dxc6 22. Be5 Qb4 23. Qxg7 Rf8 24. Be4 Qxe4 25. Bd6 c5 26. Qxf8+ Kd7 27. Qe7+ Kc6 28. a4 Bd7 29. Bb8 Kb7 30. Rxd7+ Ka6 31. Rxa7+ 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1982.??.??"]
[Round "?"]
[White "De Geus, Gerard"]
[Black "Van Oene, Egbert"]
[Result "1-0"]
[ECO "B20"]
[PlyCount "63"]
[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 c5 2. b4 cxb4 3. a3 bxa3 4. Bxa3 d6 5. f4 e6 6. e5 Be7 7. Qg4 g6 8. Nf3 h5 9. Qh3 dxe5 10. Bb2 exf4 11. Bxh8 e5 12. g4 Bxg4 13. Qg2 e4 14. Bb5+ Kf8 15. Be2 exf3 16. Bxf3 Nc6 17. Ra4 Bf5 18. 0-0 Bxc2 19. Rxf4 Qb6+ 20. Kh1 Bxb1 21. Rxf7+ Ke8 22. Bxh5 Nd8 23. Rg7 gxh5 24. Rxg8+ Kd7 25. Qd5+ Qd6 26. Qxd6+ Bxd6 27. Rxb1 b6 28. Bf6 Rc8 29. Rg7+ Ke6 30. Bc3 Rc7 31. Re1+ Kd5 32. Rg5+ 1-0

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1982.??.??"]
[Round "?"]
[White "Driessen, Wim"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "B25"]
[PlyCount "48"]
[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 c5 2. Nc3 Nc6 3. g3 e6 4. Bg2 g6 5. d3 Bg7 6. f4 d6 7. Nf3 Nge7 8. 0-0 0-0 9. Be3 Nd4 10. Rb1 f5 11. Ne2 e5 12. c3 Ne6 13. fxe5 dxe5 14. Ng5 Bh6 15. Qb3 Qxd3 16. Bxc5 Bxg5 17. exf5 Rxf5 18. Rfe1 Kg7 19. Ba3 Qa6 20. Rbd1 Qb6+ 21. Qxb6 axb6 22. Rd6 Nc6 23. Bxc6 bxc6 24. Rxc6 Be3+ 0-1

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1982.??.??"]
[Round "?"]
[White "Freer, Robert"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "B50"]
[PlyCount "54"]
[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 c5 2. Nf3 d6 3. g3 g6 4. Bg2 Bg7 5. 0-0 Nc6 6. c3 e6 7. Na3 Nge7 8. Nc2 d5 9. exd5 exd5 10. d4 cxd4 11. Ncxd4 0-0 12. Bg5 h6 13. Nxc6 bxc6 14. Be3 Nf5 15. Bc5 Re8 16. Nd4 Nxd4 17. Bxd4 Ba6 18. Bxg7 Bxf1 19. Qd4 Bxg2 20. Bh8 f6 21. Bxf6 Qd6 22. Qh4 Re6 23. Bd4 g5 24. Qg4 Be4 25. h4 Rg6 26. hxg5 Rxg5 27. Qh4 Bf3 0-1

[Event "Alkmaar op-B"]
[Site "Alkmaar"]
[Date "1982.??.??"]
[Round "?"]
[White "Rietveld, Johan"]
[Black "De Geus, Gerard"]
[Result "1-0"]
[ECO "D85"]
[PlyCount "85"]
[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. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bd3 c5 8. Ne2 0-0 9. Be3 cxd4 10. Nxd4 Nc6 11. Nxc6 Bxc3+ 12. Kf1 bxc6 13. Rc1 Bg7 14. h4 Qa5 15. Qe2 Rd8 16. Bc4 h5 17. Bg5 Qa3 18. Qc2 Rb8 19. e5 Bf5 20. Qe2 Rb4 21. Kg1 Rd4 22. Bb3 Re4 23. Qd2 Rbd4 24. Qc3 Kh7 25. Qxc6 Bxe5 26. f4 Bd6 27. Rf1 Re2 28. Qe8 Rxg2+ 29. Kxg2 Rd2+ 30. Kg3 Be6 31. Rf3 Qb2 32. Bxe6 Rg2+ 33. Kh3 fxe6 34. Qf7+ Kh8 35. Qf8+ Kh7 36. Qf7+ Kh8 37. Qf8+ Kh7 38. Qh6+ Kg8 39. Qxg6+ Kh8 40. Bf6+ exf6 41. Qxg2 Qb5 42. Rg1 Qf5+ 43. Kh2 1-0

