[Event "Vlissingen HZ op 05th"]
[Site "Vlissingen"]
[Date "2001.07.30"]
[Round "4"]
[White "Koolhoven, Martin"]
[Black "Groffen, Hans"]
[Result "0-1"]
[ECO "C06"]
[BlackElo "2218"]
[PlyCount "74"]
[EventDate "2001.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 083 Extra"]
[Source "ChessBase"]
[SourceDate "2001.09.11"]
[SourceVersion "1"]
[SourceVersionDate "2001.09.11"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Bd3 c5 5. c3 Nf6 6. e5 Nfd7 7. Ndf3 Nc6 8. Ne2 cxd4 9. cxd4 Qb6 10. a3 a5 11. b3 0-0 12. 0-0 f6 13. exf6 Nxf6 14. Bg5 Bd7 15. Bh4 Rac8 16. Bg3 Nh5 17. Ne5 Be8 18. Nxc6 bxc6 19. Be5 c5 20. Qb1 g6 21. Ra2 Nf6 22. h4 Ng4 23. h5 Nxe5 24. dxe5 Qc7 25. f4 c4 26. bxc4 dxc4 27. Be4 Bc5+ 28. Kh2 gxh5 29. Rf3 Kh8 30. Rb2 Qe7 31. Rh3 Rg8 32. Rb7 Rc7 33. Rxc7 Qxc7 34. Rc3 Qe7 35. g3 h4 36. Rxc4 hxg3+ 37. Kg2 Qh4 0-1

[Event "Vlissingen HZ op 05th"]
[Site "Vlissingen"]
[Date "2001.07.28"]
[Round "1"]
[White "Werner, Clemens"]
[Black "Koolhoven, Martin"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2395"]
[PlyCount "49"]
[EventDate "2001.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 083 Extra"]
[Source "ChessBase"]
[SourceDate "2001.09.11"]
[SourceVersion "1"]
[SourceVersionDate "2001.09.11"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 0-0 6. c3 d6 7. Bb3 Be6 8. Nbd2 d5 9. Ba4 Qd6 10. Bxc6 Qxc6 11. Nxe5 Qb6 12. d4 Bd6 13. exd5 Bxd5 14. Ndc4 Qa6 15. Ne3 Be6 16. f4 Rad8 17. Qf3 c5 18. f5 Bd7 19. N3g4 Be7 20. Be3 Bb5 21. Rfe1 Nd5 22. dxc5 f6 23. Nh6+ gxh6 24. Qg3+ Kh8 25. Bxh6 1-0

[Event "Vlissingen HZ op 03rd"]
[Site "Vlissingen"]
[Date "1999.08.15"]
[Round "7"]
[White "De Pooter, Ronald"]
[Black "Koolhoven, Martin"]
[Result "1/2-1/2"]
[ECO "D45"]
[PlyCount "46"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 Nf6 5. Nf3 dxc4 6. Bxc4 b5 7. Bd3 Bb7 8. 0-0 a6 9. a3 c5 10. dxc5 Bxc5 11. b4 Bb6 12. Bb2 0-0 13. Be2 Qxd1 14. Rfxd1 Ne4 15. Nxe4 Bxe4 16. Rac1 Rd8 17. Bd4 Nd7 18. Bxb6 Nxb6 19. Rxd8+ Rxd8 20. h3 Rc8 21. Rxc8+ Nxc8 22. Nd4 Ne7 23. Nb3 Bb7 1/2-1/2

[Event "Vlissingen HZ op 03rd"]
[Site "Vlissingen"]
[Date "1999.08.14"]
[Round "6"]
[White "Koolhoven, Martin"]
[Black "De Jonge, AW."]
[Result "1-0"]
[ECO "C58"]
[PlyCount "91"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ Bd7 7. Qe2 Bd6 8. Bxd7+ Qxd7 9. c4 0-0 10. d3 b6 11. Bd2 Nb7 12. Nc3 Bc5 13. Nge4 Be7 14. 0-0 a6 15. Nxf6+ Bxf6 16. Ne4 Be7 17. Bc3 f5 18. Ng3 Rae8 19. Bxe5 Bf6 20. f4 Re7 21. d4 g6 22. Qf3 a5 23. Bxf6 Rxf6 24. Rfe1 Rff7 25. Re5 Nd6 26. b3 Rg7 27. Rae1 Ref7 28. c5 Nb5 29. Qe3 h6 30. a4 Na3 31. Qc1 bxc5 32. dxc5 c6 33. d6 Nb5 34. axb5 cxb5 35. Re8+ Rf8 36. Rxf8+ Kxf8 37. Qc3 Qd8 38. Qd4 Kg8 39. Qe5 a4 40. bxa4 bxa4 41. Qe8+ Qxe8 42. Rxe8+ Kh7 43. Ra8 Rb7 44. Rxa4 Rb1+ 45. Nf1 Rc1 46. d7 1-0

[Event "Vlissingen HZ op 03rd"]
[Site "Vlissingen"]
[Date "1999.08.13"]
[Round "5"]
[White "Dieperink, FHJ"]
[Black "Koolhoven, Martin"]
[Result "1/2-1/2"]
[ECO "B60"]
[PlyCount "47"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nc6 7. Nxc6 bxc6 8. Bc4 Qa5 9. Bxf6 gxf6 10. Qd3 Bh6 11. 0-0 Rg8 12. Rfe1 Qh5 13. Ne2 Qg6 14. Ng3 Bf4 15. Qf3 Be5 16. c3 h5 17. Qxh5 Bxg3 18. Qxg6 Bxf2+ 19. Kxf2 Rxg6 20. Rad1 Rg5 21. Rd2 Kf8 22. Re3 a5 23. h3 Ba6 24. Bxa6 1/2-1/2

[Event "Vlissingen HZ op 03rd"]
[Site "Vlissingen"]
[Date "1999.08.12"]
[Round "4"]
[White "Koolhoven, Martin"]
[Black "De Winter, Gerard"]
[Result "1/2-1/2"]
[ECO "E90"]
[PlyCount "38"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "7"]
[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. Nf3 0-0 5. e4 d6 6. Be3 Nbd7 7. Be2 c5 8. h3 cxd4 9. Bxd4 Qa5 10. 0-0 Nc5 11. Qb1 Ne6 12. Bxf6 exf6 13. Nd5 Qd8 14. Rd1 Nc7 15. Qc2 Nxd5 16. exd5 Bd7 17. Nd4 f5 18. Qd2 Re8 19. Nf3 Qf6 1/2-1/2

[Event "Vlissingen HZ op 03rd"]
[Site "Vlissingen"]
[Date "1999.08.11"]
[Round "3"]
[White "Van Muenster, Kirsten"]
[Black "Koolhoven, Martin"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2110"]
[PlyCount "60"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d5 5. Bb5 Nf6 6. Ne5 Qc7 7. Qe2 Be7 8. 0-0 0-0 9. Bxc6 bxc6 10. d3 Bd6 11. Ng4 Nxg4 12. Qxg4 f5 13. Qg3 Ba6 14. e5 Be7 15. b3 c4 16. Na4 cxd3 17. cxd3 Bb5 18. Nb2 Qb6+ 19. Be3 d4 20. Bd2 Ba3 21. Rab1 Qa6 22. Rfd1 Rfd8 23. Be1 Rac8 24. h4 Qb7 25. Qf3 Qe7 26. Nc4 Bxc4 27. bxc4 Rd7 28. Rb3 Rb7 29. Rdb1 Rxb3 30. Rxb3 Qc7 1-0

[Event "Vlissingen HZ op 03rd"]
[Site "Vlissingen"]
[Date "1999.08.10"]
[Round "2"]
[White "Koolhoven, Martin"]
[Black "Rikumahu, F."]
[Result "1-0"]
[ECO "B75"]
[PlyCount "89"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 cxd4 5. Nxd4 Nc6 6. Be3 a6 7. Qd2 d6 8. f3 Nf6 9. 0-0-0 h5 10. Nxc6 bxc6 11. e5 Nd5 12. Nxd5 cxd5 13. Qxd5 Be6 14. Qc6+ Bd7 15. Qb6 Qxb6 16. Bxb6 Bxe5 17. Bd4 Bxd4 18. Rxd4 0-0 19. Bc4 Bc6 20. Re1 Ra7 21. Re3 Rd8 22. Ra3 d5 23. Bf1 a5 24. Rc3 Be8 25. Rc5 e6 26. c4 Rb8 27. cxd5 Rab7 28. Rd2 a4 29. d6 Kg7 30. Rc7 Bd7 31. Rdc2 Kf6 32. Rxb7 Rxb7 33. Rc7 Rxc7+ 34. dxc7 Ke5 35. Ba6 Kf4 36. Kd2 f5 37. c8Q Bxc8 38. Bxc8 e5 39. b4 axb3 40. axb3 g5 41. b4 e4 42. fxe4 fxe4 43. b5 h4 44. b6 g4 45. Bxg4 1-0

[Event "Vlissingen HZ op 03rd"]
[Site "Vlissingen"]
[Date "1999.08.09"]
[Round "1"]
[White "Mikhalevski, Victor"]
[Black "Koolhoven, Martin"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2516"]
[PlyCount "55"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "7"]
[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 d5 4. Nf3 Bg7 5. Qa4+ c6 6. cxd5 Nxd5 7. e4 Nxc3 8. bxc3 0-0 9. Be2 c5 10. 0-0 Nc6 11. Be3 cxd4 12. cxd4 Bg4 13. Rad1 Qa5 14. Qb3 Bxf3 15. Bxf3 Qb4 16. Qxb4 Nxb4 17. Rd2 b6 18. Rb1 Nc6 19. Be2 Rfd8 20. d5 Ne5 21. Rc2 Bf8 22. Rbc1 Nd7 23. Rc7 Nc5 24. e5 Rac8 25. Rc6 Rxc6 26. dxc6 e6 27. Bxc5 Bxc5 28. Ba6 1-0

[Event "Vlissingen op"]
[Site "Vlissingen"]
[Date "1996.??.??"]
[Round "1"]
[White "De Wolf, Johan"]
[Black "Koolhoven, Martin"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2275"]
[PlyCount "91"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 053 Extra"]
[Source "ChessBase"]
[SourceDate "1996.09.01"]
[SourceVersion "1"]
[SourceVersionDate "1996.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. g3 e6 5. Bg2 Bd6 6. 0-0 Nbd7 7. Nc3 0-0 8. Bg5 h6 9. Bxf6 Nxf6 10. Qd3 Re8 11. e4 dxc4 12. Qxc4 e5 13. dxe5 Bxe5 14. Nxe5 Rxe5 15. Rad1 Qb6 16. Qd4 Re8 17. Qxb6 axb6 18. Rd4 Be6 19. a3 Red8 20. Rfd1 Rxd4 21. Rxd4 Nd7 22. f4 f5 23. Bh3 g6 24. exf5 gxf5 25. Ne4 Ra5 26. Kf2 Rb5 27. b4 c5 28. Nd6 Rxb4 29. Rxb4 cxb4 30. axb4 Nf6 31. Bxf5 Bxf5 32. Nxf5 Nd5 33. b5 Nc7 34. Nd4 Kf7 35. Kf3 Kg6 36. Ke4 Kf6 37. g4 Kg6 38. h4 Ne8 39. f5+ Kf7 40. g5 hxg5 41. hxg5 Ke7 42. Ke5 Kf7 43. Ne6 Ke7 44. f6+ Kf7 45. Nd8+ Kf8 46. g6 1-0

[Event "Vlissingen op"]
[Site "Vlissingen"]
[Date "1996.??.??"]
[Round "7"]
[White "Hollebrands, J."]
[Black "Koolhoven, Martin"]
[Result "0-1"]
[ECO "B48"]
[PlyCount "74"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 053 Extra"]
[Source "ChessBase"]
[SourceDate "1996.09.01"]
[SourceVersion "1"]
[SourceVersionDate "1996.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 a6 6. Be3 Qc7 7. a3 Nf6 8. f3 Bd6 9. Ndb5 axb5 10. Nxb5 Bg3+ 11. hxg3 Qxg3+ 12. Bf2 Qe5 13. c3 0-0 14. Qc2 d5 15. Bd3 dxe4 16. Bxe4 Nxe4 17. Qxe4 Rd8 18. Nd4 Qxe4+ 19. fxe4 Nxd4 20. cxd4 b5 21. 0-0 Bb7 22. Rfe1 Rac8 23. e5 Rc2 24. Rab1 Bd5 25. b4 Rdc8 26. g3 h5 27. Ra1 R8c3 28. Re3 Rxe3 29. Bxe3 Rg2+ 30. Kf1 Rxg3 31. Bf2 Rb3 32. Be1 Rd3 33. Bf2 g5 34. a4 bxa4 35. Rxa4 h4 36. Kg1 Rd1+ 37. Kh2 Rh1# 0-1

[Event "Vlissingen op"]
[Site "Vlissingen"]
[Date "1996.??.??"]
[Round "2"]
[White "Koolhoven, Martin"]
[Black "Gommers, Olga"]
[Result "1/2-1/2"]
[ECO "E85"]
[PlyCount "44"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 053 Extra"]
[Source "ChessBase"]
[SourceDate "1996.09.01"]
[SourceVersion "1"]
[SourceVersionDate "1996.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 c6 10. Rd1 Rxd1+ 11. Kxd1 Be6 12. Kc2 Nbd7 13. Be3 Bf8 14. g3 b6 15. Nh3 h6 16. Nf2 Kg7 17. b3 Rd8 18. Bg2 Nc5 19. Rd1 Rd7 20. Bf1 Rxd1 21. Kxd1 Nfd7 22. Kc2 Nf6 1/2-1/2

[Event "Vlissingen op"]
[Site "Vlissingen"]
[Date "1996.??.??"]
[Round "6"]
[White "Koolhoven, Martin"]
[Black "Holwijn, Melvin"]
[Result "0-1"]
[ECO "A85"]
[PlyCount "78"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 053 Extra"]
[Source "ChessBase"]
[SourceDate "1996.09.01"]
[SourceVersion "1"]
[SourceVersionDate "1996.09.01"]
[SourceQuality "1"]

1. d4 f5 2. c4 e6 3. Nc3 Nf6 4. e3 Bb4 5. Qb3 Bxc3+ 6. bxc3 b6 7. f3 Bb7 8. Nh3 0-0 9. c5 Nh5 10. a4 g5 11. Ba3 Re8 12. Bd3 Kh8 13. Nf2 g4 14. fxg4 fxg4 15. Be4 Bxe4 16. Nxe4 Nf6 17. Qc2 Nd5 18. Qd3 Qh4+ 19. Ke2 Nc6 20. c4 Nde7 21. Bb2 Ng6 22. d5+ Nce5 23. Bxe5+ Nxe5 24. Qd4 exd5 25. cxd5 bxc5 26. Nxc5 d6 27. Ne6 Qe7 28. Rhf1 c5 29. Qc3 Qb7 30. e4 Rab8 31. Ng5 Qb2+ 32. Qxb2 Rxb2+ 33. Ke3 Rxg2 34. Rf2 Rxf2 35. Kxf2 Rb8 36. Ra3 c4 37. Ne6 Rb2+ 38. Kg1 Nf3+ 39. Kf1 Nxh2+ 0-1

[Event "Vlissingen op"]
[Site "Vlissingen"]
[Date "1996.??.??"]
[Round "3"]
[White "Koolhoven, Martin"]
[Black "Koolhoven, J."]
[Result "1-0"]
[ECO "E73"]
[PlyCount "63"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 053 Extra"]
[Source "ChessBase"]
[SourceDate "1996.09.01"]
[SourceVersion "1"]
[SourceVersionDate "1996.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be3 0-0 6. Be2 e5 7. h4 h5 8. Bg5 Nbd7 9. Nf3 Qe8 10. Nb5 Qd8 11. Nh2 a6 12. Nc3 Qe8 13. d5 Nc5 14. Bxf6 Bxf6 15. b4 Nd7 16. g4 Qe7 17. g5 Bg7 18. Bxh5 gxh5 19. Qxh5 f5 20. exf5 Rxf5 21. Ne4 Nf8 22. Ng4 Bd7 23. Rg1 Be8 24. Ngf6+ Rxf6 25. Nxf6+ Qxf6 26. gxf6 Bxh5 27. Rxg7+ Kh8 28. Rxc7 b5 29. c5 dxc5 30. bxc5 Ng6 31. d6 Bg4 32. c6 1-0

[Event "Vlissingen op"]
[Site "Vlissingen"]
[Date "1996.??.??"]
[Round "4"]
[White "Van Driel, Eric"]
[Black "Koolhoven, Martin"]
[Result "1/2-1/2"]
[ECO "E32"]
[PlyCount "78"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 053 Extra"]
[Source "ChessBase"]
[SourceDate "1996.09.01"]
[SourceVersion "1"]
[SourceVersionDate "1996.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 b6 5. Bg5 Bb7 6. f3 h6 7. Bh4 g5 8. Bg3 d6 9. e3 Bxc3+ 10. Qxc3 Nbd7 11. Bd3 Qe7 12. Ne2 Nh5 13. Bf2 0-0-0 14. b4 e5 15. d5 c5 16. b5 Kc7 17. Ng3 Nxg3 18. hxg3 Nf6 19. Qc2 Rde8 20. e4 Nd7 21. Be3 Nf8 22. Qd2 Ng6 23. Ke2 Bc8 24. Kf2 Ref8 25. Rxh6 f6 26. Bxg5 fxg5 27. Rxg6 Rxf3+ 28. Kxf3 Qf7+ 29. Ke3 Qxg6 30. Qf2 Rh7 31. Rf1 g4 32. Qf8 Qg7 33. Qe8 Qd7 34. Qf8 Qe7 35. Qg8 Rg7 36. Qh8 Rh7 37. Qg8 Rg7 38. Qf8 Qxf8 39. Rxf8 Rg6 1/2-1/2

