[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.04"]
[Round "5"]
[White "Clausen, Co"]
[Black "Pancras, Paul"]
[Result "0-1"]
[ECO "E76"]
[PlyCount "98"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. dxc5 Qa5 8. Bd2 Qxc5 9. a3 a5 10. Rb1 Ng4 11. Qe2 f5 12. b4 axb4 13. axb4 Qc7 14. Nd5 Qd8 15. e5 e6 16. Nc3 dxe5 17. fxe5 Nc6 18. Bf4 Nd4 19. Nxd4 Qxd4 20. Qd2 Qxd2+ 21. Kxd2 Rd8+ 22. Kc2 Bxe5 23. Bxe5 Nxe5 24. Be2 b6 25. Ra1 Bb7 26. Rxa8 Bxa8 27. Rg1 Nc6 28. Kb3 Nd4+ 29. Ka4 Nxe2 30. Nxe2 Bc6+ 31. b5 Bb7 32. g3 Kf7 33. h4 Rd2 34. Nc3 e5 35. Rd1 Rxd1 36. Nxd1 f4 37. gxf4 exf4 38. Kb4 Ke6 39. c5 bxc5+ 40. Kxc5 h6 41. Kb6 Bf3 42. Nf2 g5 43. hxg5 hxg5 44. Kc7 g4 45. b6 g3 46. Nd3 Kf5 47. Ne1 Be4 48. b7 Bxb7 49. Kxb7 Ke4 0-1

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.04"]
[Round "6"]
[White "Goudsmit, Erik"]
[Black "Clausen, Co"]
[Result "1/2-1/2"]
[ECO "C43"]
[PlyCount "75"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. Bxe4 dxe4 7. Qe2 0-0 8. 0-0 Re8 9. Be3 Nd7 10. Bf4 Nxe5 11. dxe5 Bxe5 12. Bxe5 Rxe5 13. Nc3 Bf5 14. Rad1 Qe8 15. Nd5 Rc8 16. Qd2 h6 17. Rfe1 c6 18. Ne3 Bg6 19. Qb4 Rc7 20. Qb3 Qe6 21. Rd8+ Kh7 22. Qb4 Qe7 23. Qd4 b6 24. Rd1 f5 25. Nc4 Re6 26. Qe3 Bh5 27. R1d2 Rg6 28. Qf4 Qg5 29. Qxg5 Rxg5 30. R2d7 Rxd7 31. Rxd7 Bf3 32. g3 f4 33. Nd2 fxg3 34. fxg3 Re5 35. Nxf3 exf3 36. Rd4 h5 37. Kf2 Rf5 38. Rd3 1/2-1/2

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.03"]
[Round "4"]
[White "Bouwens, Harko"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "102"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 Nc6 5. Nd5 Nxd5 6. Bxd5 Qf6 7. c3 Bc5 8. 0-0 0-0 9. b4 Bb6 10. a4 a6 11. d4 h6 12. Be3 d6 13. Bxc6 bxc6 14. a5 Ba7 15. Qd3 Bb7 16. dxe5 dxe5 17. Bxa7 Rxa7 18. Qe3 Raa8 19. Rad1 Rfe8 20. Rd7 Re7 21. Rfd1 Qe6 22. Rxe7 Qxe7 23. Qc5 Rd8 24. Rxd8+ Qxd8 25. h3 f6 26. Qc4+ Kf8 27. Nh4 Qe8 28. Qc5+ Kg8 29. Nf5 Kh7 30. Qa7 Qa8 31. Qc5 Qe8 32. h4 Bc8 33. g3 g6 34. Ne3 Kg7 35. Nc4 Qd7 36. Ne3 Qd6 37. Qc4 Qe6 38. Qd3 Qd6 39. Qe2 c5 40. h5 cxb4 41. hxg6 bxc3 42. Nf5+ Bxf5 43. exf5 Qc6 44. Qa2 Qd7 45. Qc4 h5 46. Qxc3 Qxf5 47. Qxc7+ Kxg6 48. Qc4 Qb1+ 49. Kh2 Qb7 50. Qa4 h4 51. Qe8+ Kg5 1-0

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.03"]
[Round "3"]
[White "Clausen, Co"]
[Black "Beverdam, Frank"]
[Result "1-0"]
[ECO "E77"]
[PlyCount "115"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. exd5 Re8 10. 0-0 Bg4 11. Bd2 Na6 12. Be1 Nh5 13. Bh4 Qb6 14. h3 Bd7 15. Qd2 Nf6 16. Bd3 Nb4 17. Bb1 Qa5 18. a3 Na6 19. Bd3 Qd8 20. Rab1 Qc8 21. Ng5 h6 22. Nge4 Nxe4 23. Nxe4 Bd4+ 24. Bf2 Bg7 25. Nxd6 Qc7 26. Nxe8 Rxe8 27. Rfe1 Rd8 28. Bc2 b5 29. b3 b4 30. a4 Bc3 31. Qe3 Re8 32. Qg3 Bxe1 33. Rxe1 Rxe1+ 34. Bxe1 Qd6 35. Qe3 Qf6 36. Qe5 Qd8 37. Bf2 Qc8 38. g4 h5 39. f5 hxg4 40. hxg4 Qd8 41. Qd6 Qg5 42. Qxd7 Qc1+ 43. Kg2 Qxc2 44. Qe8+ Kg7 45. Qe5+ Kg8 46. Qe3 Qd1 47. Kg3 gxf5 48. gxf5 Qc2 49. Kf4 Qb2 50. d6 Qf6 51. Qe5 Qh6+ 52. Ke4 Qh1+ 53. Ke3 Qh3+ 54. Qg3+ Qxg3+ 55. Bxg3 Nb8 56. Ke4 Kf8 57. Kd5 Ke8 58. Bf2 1-0

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.02"]
[Round "1"]
[White "Erwich, Frans"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "2079"]
[PlyCount "73"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Nf3 Nc6 7. d5 Ne5 8. Nd2 c6 9. h3 cxd5 10. cxd5 a6 11. f4 Ned7 12. 0-0 Ne8 13. Nf3 b5 14. Be3 Nb6 15. Nd4 Bd7 16. Rc1 Nf6 17. Nc6 Bxc6 18. dxc6 Nc4 19. Bxc4 bxc4 20. Qd4 e6 21. Qxc4 Qc7 22. Rfd1 Rfc8 23. Na4 d5 24. Qc2 Rab8 25. e5 Ne8 26. Qf2 Qa5 27. Nb6 Rc7 28. Nd7 Rb5 29. Bb6 Qxa2 30. Bxc7 Rxb2 31. Qf1 Nxc7 32. Rb1 Bh6 33. Rxb2 Qxb2 34. Nf6+ Kh8 35. Rb1 Qd4+ 36. Qf2 Qxf4 37. Rb8+ 1-0

[Event "Haarlem AKN op 07th"]
[Site "Haarlem"]
[Date "1998.??.??"]
[Round "4"]
[White "Clausen, Co"]
[Black "Leenhouts, Koen"]
[Result "0-1"]
[ECO "E76"]
[PlyCount "72"]
[EventDate "1998.07.01"]
[EventType "swiss"]
[EventRounds "6"]
[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 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c6 7. Be2 Nbd7 8. 0-0 e5 9. fxe5 dxe5 10. d5 Ng4 11. Ng5 Qb6+ 12. Kh1 Nf2+ 13. Rxf2 Qxf2 14. d6 Qd4 15. Nf3 Qxd1+ 16. Bxd1 Rd8 17. Be3 b6 18. b4 a5 19. Na4 axb4 20. Nxb6 Nxb6 21. Bxb6 Rxd6 22. Bb3 Rd3 23. Rb1 Bg4 24. Ne1 Rc3 25. Nc2 Bf8 26. h3 Be2 27. Bc7 Re8 28. Ba5 c5 29. Na3 Bd3 30. Re1 Rxb3 31. axb3 bxa3 32. Bc3 a2 33. Ba1 Bb1 34. Re2 Rd8 35. Kg1 Rd3 36. Bxe5 Bg7 0-1

[Event "Haarlem AKN op 07th"]
[Site "Haarlem"]
[Date "1998.??.??"]
[Round "1"]
[White "Clausen, Co"]
[Black "Van Zandwijk, Jan Peter"]
[Result "0-1"]
[ECO "A85"]
[PlyCount "72"]
[EventDate "1998.07.01"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. Nf3 Bb4 5. Bg5 0-0 6. a3 Bxc3+ 7. bxc3 b6 8. e3 Bb7 9. Be2 Qe8 10. Bf4 d6 11. 0-0 Nbd7 12. Qb3 e5 13. c5+ Bd5 14. Bc4 Bxc4 15. Qxc4+ d5 16. Qb3 exf4 17. c6 Nb8 18. exf4 Qxc6 19. Rfe1 Nbd7 20. Ne5 Qd6 21. Re3 c5 22. Rh3 Rac8 23. Qc2 cxd4 24. Qxf5 dxc3 25. g4 c2 26. Rc1 Rfe8 27. g5 Qe6 28. Qxe6+ Rxe6 29. gxf6 Nxe5 30. fxe5 Rxe5 31. Kf1 gxf6 32. Re3 d4 33. Rd3 Rb5 34. Ke2 Rb1 35. Kd2 Rxc1 36. Kxc1 Rc4 0-1

[Event "Haarlem AKN op 07th"]
[Site "Haarlem"]
[Date "1998.??.??"]
[Round "6"]
[White "Koelman, Luuk"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "A68"]
[PlyCount "83"]
[EventDate "1998.07.01"]
[EventType "swiss"]
[EventRounds "6"]
[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 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 a6 10. 0-0 b5 11. e5 dxe5 12. fxe5 Nfd7 13. Bg5 Qb6 14. Be7 Re8 15. d6 Bb7 16. Nd5 Bxd5 17. Qxd5 Qc6 18. Qd2 Bxe5 19. Nxe5 Nxe5 20. Qh6 Nbd7 21. Bf3 Nxf3+ 22. Rxf3 Qd5 23. Raf1 f5 24. Rh3 Qd4+ 25. Kh1 Qg7 26. Qd2 Nf6 27. Bxf6 Qxf6 28. Qd5+ Qe6 29. Qb7 Qf7 30. Qxf7+ Kxf7 31. Rxh7+ Kg8 32. Rc7 c4 33. g4 Rad8 34. d7 Re7 35. gxf5 gxf5 36. Rd1 Kf7 37. Rd2 Ke6 38. Rc6+ Ke5 39. Rcd6 Kf4 40. Kg2 Kg5 41. Kf3 f4 42. R2d5+ 1-0

[Event "Haarlem AKN op 07th"]
[Site "Haarlem"]
[Date "1998.??.??"]
[Round "3"]
[White "Wagenaar, Harm Theo"]
[Black "Clausen, Co"]
[Result "1/2-1/2"]
[ECO "A24"]
[PlyCount "98"]
[EventDate "1998.07.01"]
[EventType "swiss"]
[EventRounds "6"]
[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. e4 d6 6. Nge2 e5 7. 0-0 c6 8. d3 Nbd7 9. Be3 Ng4 10. Bd2 f5 11. h3 Ngf6 12. Be3 a6 13. exf5 gxf5 14. f4 Bh6 15. Qd2 Nc5 16. b4 Ne6 17. Rab1 exf4 18. gxf4 Rb8 19. Nd4 Nh5 20. Nxe6 Bxe6 21. Qf2 Bg7 22. Ne2 Bf7 23. Nd4 Qf6 24. Nf3 Rbe8 25. Kh2 h6 26. Rg1 Qc3 27. Rb3 Qf6 28. Bd4 Qe7 29. Bxg7 Kxg7 30. Bf1+ Kh7 31. Nh4 Qf6 32. Rb1 Rg8 33. Ng2 d5 34. b5 dxc4 35. dxc4 cxb5 36. cxb5 Bd5 37. bxa6 bxa6 38. Rb6 Re6 39. Rxe6 Qxe6 40. a3 Qd6 41. Qa7+ Rg7 42. Qxa6 Rxg2+ 43. Rxg2 Qxf4+ 44. Kg1 Bxg2 45. Qa7+ Kg6 46. Bxg2 Qc1+ 47. Kh2 Qf4+ 48. Kg1 Qc1+ 49. Kh2 Qf4+ 1/2-1/2

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "4"]
[White "Clausen, Co"]
[Black "Bouwens, Harko"]
[Result "0-1"]
[ECO "E24"]
[BlackElo "1925"]
[PlyCount "64"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 b6 6. Bg5 Bb7 7. e3 d6 8. Be2 Bxg2 9. Bf3 Bxh1 10. Bxh1 c6 11. Qa4 0-0 12. e4 Qc7 13. Bxf6 gxf6 14. Rd1 Nd7 15. Rd3 b5 16. Qc2 bxc4 17. Rh3 Kh8 18. Qe2 Rg8 19. Kf1 Qb6 20. Nf3 Rg7 21. Nd2 Qb2 22. Qe1 Rag8 23. Rg3 Rxg3 24. hxg3 Qxc3 25. e5 Qxd4 26. exd6 Ne5 27. Qe2 Rb8 28. Be4 f5 29. Bc2 Rb2 30. f4 Rxc2 31. Qxe5+ Qxe5 32. fxe5 Rxd2 0-1

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "3"]
[White "Clausen, Co"]
[Black "De Boer, Sanne"]
[Result "0-1"]
[ECO "E77"]
[BlackElo "2040"]
[PlyCount "44"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. exd5 Na6 10. 0-0 Nc7 11. a4 Nd7 12. Ne4 Qe7 13. Bd3 f5 14. Neg5 Nf6 15. Re1 Qd8 16. Ne6 Nxe6 17. dxe6 Re8 18. Ng5 h6 19. Nf7 Qc7 20. Bf1 Rxe6 21. Rxe6 Bxe6 22. Nxd6 Rd8 0-1

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "6"]
[White "Clausen, Co"]
[Black "Van der Heuvel, Sonja"]
[Result "1-0"]
[ECO "E30"]
[PlyCount "77"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 c5 5. a3 Bxc3+ 6. bxc3 Qa5 7. Bd2 Ne4 8. Qc2 Nxd2 9. Qxd2 0-0 10. e3 d5 11. Nf3 Nc6 12. cxd5 exd5 13. Be2 c4 14. 0-0 Qc7 15. Qc2 g6 16. e4 Be6 17. Rfe1 Rfe8 18. Rad1 Ne7 19. h3 dxe4 20. Qxe4 Bd5 21. Qe5 Qd7 22. Qf4 Nf5 23. Ne5 Qd6 24. Qc1 Nh4 25. Nxc4 Bxc4 26. Bxc4 Qc6 27. Bf1 Rxe1 28. Rxe1 Rc8 29. c4 b5 30. d5 Qc5 31. Qf4 Nf5 32. g4 Nd6 33. cxb5 Nxb5 34. Bxb5 Qxb5 35. d6 Qd5 36. Qf6 Qa8 37. d7 Rd8 38. Qxd8+ Qxd8 39. Re8+ 1-0

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "5"]
[White "Van der Kuyl, Alexander"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "C30"]
[PlyCount "43"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. f4 d6 3. Nf3 Bg4 4. Bc4 Nf6 5. fxe5 dxe5 6. Bxf7+ Kxf7 7. Nxe5+ Ke8 8. Nxg4 Nxe4 9. 0-0 Be7 10. d3 Nf6 11. Nxf6+ Bxf6 12. Qh5+ Kf8 13. Bg5 Qd4+ 14. Kh1 Nd7 15. Nc3 Re8 16. Rae1 Rxe1 17. Rxe1 g6 18. Qf3 c6 19. Re4 Qd6 20. Rf4 Kg7 21. Ne4 Bxg5 22. Rf7+ 1-0

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "1"]
[White "Weijers, Theo"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "45"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[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. Nc3 Nxc3 6. dxc3 Be7 7. Be3 0-0 8. Qd2 Nd7 9. 0-0-0 Ne5 10. Nd4 c5 11. Nb3 Bg4 12. f3 Nxf3 13. gxf3 Bxf3 14. Rg1 Bxd1 15. Qxd1 g6 16. Bh6 a5 17. Bxf8 Bxf8 18. Kb1 Bg7 19. Bc4 a4 20. Nc1 a3 21. b3 Qf6 22. Ne2 Re8 23. Rf1 1-0

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "5"]
[White "Clausen, Co"]
[Black "Smissaert, Michiel"]
[Result "1/2-1/2"]
[ECO "A58"]
[PlyCount "109"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. e3 g6 6. Nc3 d6 7. Nf3 Bg7 8. bxa6 Bxa6 9. Bxa6 Rxa6 10. 0-0 0-0 11. Re1 Nbd7 12. e4 Nb6 13. Bg5 Qa8 14. Rb1 Rb8 15. b3 c4 16. bxc4 Nxc4 17. Qe2 Rxb1 18. Rxb1 Nb6 19. h3 h6 20. Bc1 Kh7 21. a3 Nfd7 22. Nb5 Ra4 23. Bb2 Nf6 24. Bxf6 Bxf6 25. Nxd6 Nxd5 26. Nxf7 Kg7 27. exd5 Kxf7 28. Qe6+ Kg7 29. Ne5 Qg8 30. Qxg8+ Kxg8 31. Nxg6 Kf7 32. Nxe7 Kxe7 33. Rb7+ Kd8 34. Rb3 Bg5 35. g4 Bc1 36. Kg2 Bxa3 37. Kg3 Bc1 38. Rf3 Rd4 39. Rf5 Rd3+ 40. f3 Bd2 41. h4 Kd7 42. g5 hxg5 43. hxg5 Rd4 44. f4 Rd3+ 45. Kg4 Kd6 46. g6 Bc3 47. Rf7 Rxd5 48. g7 Rd1 49. Kh5 Rg1 50. Kh6 Ke6 51. Rb7 Kf5 52. Kh7 Rh1+ 53. Kg8 Kxf4 54. Kf8 Bxg7+ 55. Rxg7 1/2-1/2

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "1"]
[White "Clausen, Co"]
[Black "Stuifbergen, Jan"]
[Result "0-1"]
[ECO "E30"]
[PlyCount "62"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bd2 0-0 6. e3 d6 7. a3 Bxc3 8. Bxc3 Ne4 9. Qc2 Nxc3 10. Qxc3 b6 11. Be2 Nd7 12. Nf3 Qe7 13. 0-0 f5 14. Rfe1 Bb7 15. Nd2 e5 16. dxe5 dxe5 17. f3 Nf6 18. Qc2 Rad8 19. Nf1 e4 20. Ng3 Qc5 21. Kh1 g6 22. Qc3 h5 23. Rad1 Rxd1 24. Rxd1 h4 25. b4 Qe7 26. Nf1 h3 27. Qe1 hxg2+ 28. Kxg2 exf3+ 29. Bxf3 Bxf3+ 30. Kxf3 Qe4+ 31. Kg3 Qg4+ 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "6"]
[White "Copier, Richard"]
[Black "Clausen, Co"]
[Result "0-1"]
[ECO "E61"]
[PlyCount "126"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bf4 0-0 5. Nf3 d6 6. h3 Nh5 7. Qc1 Nxf4 8. Qxf4 Nc6 9. e3 e5 10. dxe5 dxe5 11. Qg3 f5 12. Be2 e4 13. Rd1 Qe8 14. Nd4 Nxd4 15. exd4 f4 16. Qg5 Rf5 17. Qh4 f3 18. Bf1 e3 19. gxf3 Rxf3 20. Qe4 Qxe4 21. Nxe4 Bf5 22. Bd3 Re8 23. Ke2 Bxe4 24. Bxe4 Rxf2+ 25. Kxe3 Rxb2 26. Kf3 Rf8+ 27. Kg3 c6 28. Rh2 Rxh2 29. Kxh2 Rf2+ 30. Kg3 Rxa2 31. d5 Be5+ 32. Kf3 Ra3+ 33. Rd3 Rxd3+ 34. Bxd3 cxd5 35. cxd5 Kf8 36. Ke4 Bd6 37. Bb5 a6 38. Bd7 b5 39. Kd4 Ke7 40. Be6 a5 41. Kc3 a4 42. Kb2 b4 43. Bg8 h6 44. Be6 g5 45. Bg4 Be5+ 46. Ka2 Kd6 47. Bd1 b3+ 48. Ka3 b2 49. Bc2 Kxd5 50. Kxa4 Kd4 51. Kb3 Ke3 52. Ka2 Kf4 53. Kb1 g4 54. hxg4 Kxg4 55. Be4 Kg3 56. Bg6 Kf4 57. Kc2 Kg5 58. Be4 h5 59. Kd2 Kf4 60. Bb1 h4 61. Ke2 Kg3 62. Kf1 Bd4 63. Be4 h3 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "4"]
[White "Mestrom, Ton"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "61"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Nf3 d6 4. Bc4 Be7 5. Nxd4 Nf6 6. Nc3 0-0 7. f3 a6 8. a4 c5 9. Nde2 Nc6 10. Nf4 Kh8 11. Be3 Ne5 12. Be2 Be6 13. 0-0 Bd7 14. g4 h6 15. Qd2 Nh7 16. Rad1 Bc6 17. Nfd5 Bh4 18. f4 Nd7 19. Bf2 Bxf2+ 20. Rxf2 Ndf6 21. h4 Re8 22. Bf3 Qd7 23. Nb6 Qe7 24. Nxa8 Rxa8 25. Qxd6 Qxd6 26. Rxd6 Nd7 27. e5 Bxf3 28. Rxf3 Nhf8 29. Rfd3 Rd8 30. a5 g6 31. Ne4 1-0

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "3"]
[White "Van de Vecht, Lucie"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "C43"]
[PlyCount "41"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. 0-0 0-0 7. Re1 Nf6 8. Bg5 Nbd7 9. Nd2 c5 10. c3 cxd4 11. cxd4 Re8 12. Ndf3 a6 13. Qb3 Be7 14. Nxd7 Bxd7 15. Bxf6 Bxf6 16. Rxe8+ Qxe8 17. Qxd5 Bc6 18. Qf5 Bxf3 19. Qxh7+ Kf8 20. Qh8+ Ke7 21. Re1+ 1-0

[Event "Haarlem AKN op 04th"]
[Site "Haarlem"]
[Date "1995.??.??"]
[Round "6"]
[White "Clausen, Co"]
[Black "Bos Swiecik, Iwona"]
[Result "0-1"]
[ECO "D13"]
[BlackElo "2190"]
[PlyCount "86"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nf3 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. e3 Bb4 8. Bd3 Qa5 9. Qc2 Ne4 10. Bxe4 dxe4 11. Ne5 Nxe5 12. dxe5 Bxc3+ 13. Qxc3 Qxc3+ 14. bxc3 Bd7 15. 0-0 Ba4 16. Rab1 Rb8 17. Rb4 Bc6 18. Rd1 h6 19. Bh4 g5 20. Bg3 0-0 21. Rbd4 Rfc8 22. c4 Kg7 23. h3 b6 24. R1d2 Bb7 25. f4 exf3 26. gxf3 Bxf3 27. Rd7 Rb7 28. R7d4 Rbc7 29. Kf2 Bb7 30. h4 Rxc4 31. hxg5 hxg5 32. Ke2 Ba6 33. Rxc4 Bxc4+ 34. Kd1 Bd5 35. Rf2 Rc3 36. Kd2 Ra3 37. Kc1 Rxa2 38. Rxa2 Bxa2 39. Kb2 Bd5 40. Kc3 Kg6 41. Kd4 Kf5 42. Be1 g4 43. Bf2 a5 0-1

[Event "Haarlem AKN op 04th"]
[Site "Haarlem"]
[Date "1995.??.??"]
[Round "4"]
[White "Clausen, Co"]
[Black "Van Mil, Lucas"]
[Result "0-1"]
[ECO "B73"]
[PlyCount "86"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Be2 c5 7. 0-0 cxd4 8. Nxd4 Nc6 9. Bf3 Qb6 10. Be3 Ng4 11. Bxg4 Bxd4 12. Bxd4 Qxd4+ 13. Qxd4 Nxd4 14. Bd1 Be6 15. Nd5 Bxd5 16. exd5 Rfc8 17. c3 Nf5 18. Re1 h5 19. g4 hxg4 20. Bxg4 Rc7 21. Re2 Kg7 22. Rae1 Kf6 23. Bxf5 gxf5 24. Rg2 Rc4 25. Rf1 Rh8 26. Rf3 Rh4 27. Rgf2 e6 28. b3 Re4 29. dxe6 fxe6 30. h3 Re1+ 31. Kg2 b5 32. Kg3 Rh8 33. Rh2 Rc1 34. Rd3 d5 35. h4 Rc8 36. h5 R1xc3 37. Rxc3 Rxc3+ 38. Kh4 Rf3 39. h6 Kg6 40. h7 Kxh7 41. Kg5+ Kg7 42. Rc2 Rg3+ 43. Kh5 Kf6 0-1

[Event "Haarlem AKN op 04th"]
[Site "Haarlem"]
[Date "1995.??.??"]
[Round "1"]
[White "Clausen, Co"]
[Black "Wieringa, Helmer"]
[Result "0-1"]
[ECO "D10"]
[PlyCount "74"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 dxc4 5. e4 b5 6. Bxf6 exf6 7. a3 Be7 8. Nf3 0-0 9. Be2 Nd7 10. 0-0 Nb6 11. Re1 Re8 12. Bf1 Bg4 13. Be2 a5 14. Nd2 Bxe2 15. Nxe2 Bf8 16. f3 Qd7 17. Qc2 f5 18. Red1 fxe4 19. fxe4 f5 20. Nf3 Rxe4 21. Ng3 Rae8 22. Nxf5 g6 23. Ng3 Bg7 24. Qd2 Nd5 25. Re1 Rxe1+ 26. Rxe1 c5 27. dxc5 c3 28. Qc2 cxb2 29. c6 Qd6 30. Rd1 Qe6 31. Qb3 Qe3+ 32. Qxe3 Nxe3 33. Re1 Rc8 34. Nd2 Rxc6 35. Rxe3 Bd4 36. Kf2 Rc2 37. Kf3 Bxe3 0-1

[Event "Haarlem AKN op 04th"]
[Site "Haarlem"]
[Date "1995.??.??"]
[Round "3"]
[White "Hogervorst, Paul"]
[Black "Clausen, Co"]
[Result "0-1"]
[ECO "C42"]
[PlyCount "88"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. a3 Bxc3 5. bxc3 0-0 6. d4 Nxe4 7. Qd3 d5 8. Be2 Nxf2 9. Kxf2 e4 10. Qd1 exf3 11. Bxf3 Qf6 12. Re1 Be6 13. Kg1 Nd7 14. Be3 b6 15. Qd2 h6 16. Rf1 Qe7 17. c4 Nf6 18. cxd5 Nxd5 19. Qd3 Nxe3 20. Qxe3 Rad8 21. d5 Rd6 22. dxe6 Rxe6 23. Qf2 Re8 24. Bd5 Rf6 25. Rae1 Rxf2 26. Rxe7 Rxf1+ 27. Kxf1 Rxe7 28. Kf2 Re5 29. Bb3 Kf8 30. Kf3 f6 31. g4 Ke7 32. h3 Kd6 33. a4 g5 34. Kg3 Kc5 35. h4 Kd4 36. h5 Re3+ 37. Kf2 Rxb3 38. cxb3 Kc3 39. Ke3 Kxb3 40. Ke4 Kxa4 41. Kf5 c5 42. Kxf6 c4 43. Kg6 c3 44. Kxh6 c2 0-1

[Event "Haarlem AKN op 04th"]
[Site "Haarlem"]
[Date "1995.??.??"]
[Round "5"]
[White "Veerman, Johan"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2195"]
[PlyCount "81"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. c4 c6 8. 0-0 0-0 9. Qc2 Nf6 10. c5 h6 11. Nbd2 Be6 12. Ne5 Nbd7 13. f4 Ng4 14. Ndf3 Ngxe5 15. fxe5 f6 16. Nh4 f5 17. Nxf5 b6 18. cxb6 Bxf5 19. Bxf5 Qxb6 20. Be3 Nxe5 21. dxe5 Qxe3+ 22. Kh1 c5 23. Be6+ Kh8 24. Qg6 Qxe5 25. Bf5 Rxf5 26. Qxf5 Qd6 27. Qh5 c4 28. Rae1 Bf6 29. Qg6 Qc7 30. Re2 d4 31. Rfe1 Qd7 32. Re8+ Rxe8 33. Rxe8+ Qxe8 34. Qxe8+ Kh7 35. Qe4+ Kh8 36. Kg1 a5 37. Kf2 a4 38. Qe8+ Kh7 39. Qxa4 c3 40. bxc3 dxc3 41. Qc2+ 1-0

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "4"]
[White "Clausen, Co"]
[Black "De Vries, Herman"]
[Result "0-1"]
[ECO "D13"]
[PlyCount "102"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. Nc3 c6 4. cxd5 cxd5 5. Bg5 e6 6. Nf3 Be7 7. e3 0-0 8. Bd3 Nc6 9. 0-0 Bd7 10. a3 Rc8 11. Rc1 h6 12. Bh4 Re8 13. Na4 Nxd4 14. Ne5 Rxc1 15. Qxc1 Nb3 16. Qc2 Bxa4 17. Bxf6 Bxf6 18. Bh7+ Kf8 19. Ng4 Qc8 20. Qe2 Qc4 21. Bd3 Nc1 22. Bxc4 Nxe2+ 23. Bxe2 Bxb2 24. Rb1 Bxa3 25. Rxb7 Rc8 26. g3 Bc5 27. Ne5 Be8 28. Ba6 Bd6 29. Nd3 Rc7 30. Rb8 Rc6 31. Rxe8+ Kxe8 32. Bb5 Kd7 33. Kf1 Kc7 34. Bxc6 Kxc6 35. Ke2 Kb5 36. Kd2 e5 37. f3 a5 38. Kc2 a4 39. e4 dxe4 40. fxe4 Kc4 41. Nb2+ Kb4 42. Nd3+ Kb5 43. g4 f6 44. h3 Bc5 45. h4 Bd4 46. h5 Kc4 47. Nc1 a3 48. Kb1 Bb2 49. Ne2 Kb3 50. Nc1+ Bxc1 51. Kxc1 a2 0-1

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "5"]
[White "Clausen, Co"]
[Black "Resnick, Paul"]
[Result "0-1"]
[ECO "D58"]
[PlyCount "75"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 0-0 6. e3 h6 7. Bh4 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Be2 c5 11. 0-0 Bb7 12. Rc1 Nd7 13. Re1 N7f6 14. dxc5 bxc5 15. Ne5 Rfd8 16. Qb3 Rab8 17. Qa3 Ba8 18. Nb5 Qb7 19. Bf1 a6 20. Nc3 Nxc3 21. bxc3 Rd2 22. Nc4 Ne4 23. Nxd2 Nxd2 24. f3 Nxf3+ 25. gxf3 Qxf3 26. Re2 Qh1+ 27. Kf2 Qxh2+ 28. Ke1 Qg3+ 29. Rf2 Qxe3+ 30. Be2 Rd8 31. Qb3 f5 32. Qc2 Be4 33. Qb2 f4 34. Rh2 f3 35. Rd1 Qg1+ 36. Bf1 Rxd1+ 37. Kxd1 Qxf1+ 38. Kd2 0-1

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "3"]
[White "Helsloot, Sander"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "A45"]
[PlyCount "47"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 g6 4. f3 Nf6 5. e4 d6 6. Qd2 Bg7 7. c4 0-0 8. Nc3 a6 9. Nge2 c5 10. d5 Nh5 11. Bh6 Bd7 12. g4 Bxh6 13. Qxh6 Ng7 14. h4 f6 15. Ng3 Qb6 16. 0-0-0 Qa5 17. h5 g5 18. e5 dxe5 19. Bd3 f5 20. Qxg5 Rf6 21. h6 Rg6 22. Qxe7 b5 23. Nh5 Nxh5 24. gxh5 1-0

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "1"]
[White "Pelter, Yehuda Z"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "64"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nd2 g6 3. e4 d6 4. Bd3 Bg7 5. Ne2 0-0 6. h4 Nc6 7. c3 a6 8. Ng3 e5 9. d5 Ne7 10. Ndf1 b5 11. h5 Bg4 12. f3 Bxh5 13. Bg5 c6 14. Bxf6 Bxf6 15. Nxh5 gxh5 16. Rxh5 cxd5 17. exd5 Ng6 18. Qd2 Bg7 19. Ng3 f6 20. Nf5 Ra7 21. 0-0-0 Nf4 22. Rh2 Nxd3+ 23. Qxd3 Rff7 24. g4 Bf8 25. Rg1 Rac7 26. g5 fxg5 27. Rh5 Kh8 28. Rhxg5 Bg7 29. Qf1 Qd7 30. Nxg7 Rxg7 31. Rxg7 Qxg7 32. Rxg7 Kxg7 1-0

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "6"]
[White "Spanjersberg, Hans"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "A03"]
[PlyCount "105"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 0-0 5. e3 d5 6. Be2 c5 7. 0-0 a6 8. c4 e6 9. h3 Nbd7 10. Qc2 b6 11. g4 Bb7 12. d3 Rc8 13. Nbd2 Qc7 14. Ne5 Nxe5 15. Bxe5 Qc6 16. Bf3 Qd7 17. Rae1 Rfd8 18. Rd1 Ne8 19. Bxg7 Nxg7 20. e4 d4 21. Bg2 f5 22. Rf2 fxg4 23. hxg4 e5 24. f5 gxf5 25. exf5 Bxg2 26. Rxg2 Rc6 27. Ne4 Qe7 28. Rf1 Qh4 29. Qf2 Rh6 30. Qxh4 Rxh4 31. Rf3 Rf8 32. Rfg3 Ne8 33. Rf2 Nf6 34. Nxf6+ Rxf6 35. Re2 Rfh6 36. Rxe5 Rh1+ 37. Kf2 R1h2+ 38. Rg2 R6h3 39. Re6 Rxg2+ 40. Kxg2 Rxd3 41. Rxb6 Rd2+ 42. Kf3 Rxa2 43. Rc6 Ra3 44. Rxc5 Rxb3+ 45. Ke4 Rg3 46. Kxd4 Rxg4+ 47. Kd5 h5 48. Ke6 h4 49. f6 Re4+ 50. Kf5 Re8 51. Kg6 Rf8 52. Ra5 Rc8 53. f7+ 1-0

[Event "Haarlem AKN op 02nd"]
[Site "Haarlem"]
[Date "1993.??.??"]
[Round "6"]
[White "Jonkers, Fons"]
[Black "Clausen, Co"]
[Result "1-0"]
[ECO "E81"]
[PlyCount "45"]
[EventDate "1993.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 a6 7. b4 a5 8. b5 c6 9. a4 cxb5 10. cxb5 b6 11. Rc1 e5 12. Bc4 Nbd7 13. Nge2 exd4 14. Nxd4 Nc5 15. Nc6 Qc7 16. Bf4 Re8 17. Bxd6 Qd7 18. e5 Bh6 19. Ra1 Bf4 20. 0-0 Bxe5 21. Bxe5 Qxd1 22. Raxd1 Rxe5 23. Nxe5 1-0

