[Event "NED-chT 0910"]
[Site "Netherlands"]
[Date "2010.04.18"]
[Round "9.10"]
[White "Wantola, Ivo"]
[Black "Koopmans, Cees"]
[Result "1-0"]
[ECO "A17"]
[WhiteElo "2344"]
[BlackElo "2121"]
[PlyCount "79"]
[EventDate "2009.09.26"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Leiden LSG"]
[BlackTeam "Nijmegen"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. a3 Bxc3 6. Qxc3 0-0 7. b4 d6 8. Bb2 e5 9. e3 Re8 10. Be2 a6 11. 0-0 Bg4 12. h3 Bh5 13. d3 Qe7 14. Rfe1 Rad8 15. a4 a5 16. b5 Nb4 17. Nd2 Bxe2 18. Rxe2 d5 19. c5 Nd7 20. Nb3 b6 21. c6 Nc5 22. Nxc5 Qxc5 23. Qxc5 bxc5 24. Rd2 e4 25. dxe4 Rxe4 26. Rc1 c4 27. Bd4 f6 28. b6 Nxc6 29. bxc7 Rc8 30. Bb6 Ne7 31. Bxa5 Kf7 32. Bb6 Re6 33. a5 Rc6 34. Rd4 f5 35. f3 R8xc7 36. Bxc7 Rxc7 37. e4 dxe4 38. fxe4 fxe4 39. Rxe4 Ra7 40. Rcxc4 1-0

[Event "NED-chT 0910"]
[Site "Netherlands"]
[Date "2010.03.27"]
[Round "8.9"]
[White "Koopmans, Cees"]
[Black "De Jager, Jaap"]
[Result "0-1"]
[ECO "A96"]
[WhiteElo "2121"]
[BlackElo "2357"]
[PlyCount "67"]
[EventDate "2009.09.26"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Nijmegen"]
[BlackTeam "Enschede Braceland"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. c4 d6 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 Bf6 10. Rd1 Qe8 11. c5 e5 12. cxd6 cxd6 13. dxe5 dxe5 14. e4 Nc6 15. exf5 Bxf5 16. Be3 Kh8 17. Rd2 Qh5 18. Qb3 Bg4 19. Ne1 Rab8 20. f3 Bh3 21. Rad1 Bxg2 22. Kxg2 Bg5 23. Bxg5 Qxg5 24. Nc2 Qf5 25. Qe3 Rf7 26. Qe4 Qh5 27. Rd7 Rbf8 28. Rxf7 Qxf7 29. b3 h6 30. Rd6 Qe7 31. Qd3 Nd4 32. Rd5 Nxf3 33. Rd7 Qc5 34. Rd8 0-1

[Event "NED-chT 0910"]
[Site "Netherlands"]
[Date "2010.03.06"]
[Round "7.10"]
[White "Koopmans, Cees"]
[Black "Van de Oudeweetering, Arthur"]
[Result "1/2-1/2"]
[ECO "D48"]
[WhiteElo "2121"]
[BlackElo "2337"]
[PlyCount "46"]
[EventDate "2009.09.26"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Nijmegen"]
[BlackTeam "Homburg Apeldoorn"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. a4 b4 10. Ne4 c5 11. 0-0 Bb7 12. Nxf6+ Nxf6 13. Qe2 cxd4 14. exd4 Qd5 15. Bf4 Qh5 16. Rac1 Be7 17. Ne5 Qxe2 18. Bxe2 Bd6 19. Bg3 0-0 20. Nc6 Bxg3 21. hxg3 Bxc6 22. Rxc6 a5 23. Bf3 Rfd8 1/2-1/2

[Event "NED-chT 0910"]
[Site "Netherlands"]
[Date "2010.02.20"]
[Round "5.3"]
[White "Van der Stricht, Geert"]
[Black "Koopmans, Cees"]
[Result "1-0"]
[ECO "E41"]
[WhiteElo "2383"]
[BlackElo "2137"]
[PlyCount "48"]
[EventDate "2009.09.26"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Calder HMC"]
[BlackTeam "Nijmegen"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. 0-0 0-0 9. Nd2 e5 10. Rb1 Re8 11. h3 e4 12. Bc2 b6 13. f3 exf3 14. Qxf3 Bb7 15. Qg3 Qe7 16. Nf3 Ne4 17. Bxe4 Qxe4 18. Rb2 Qg6 19. Qf2 Na5 20. Nh4 Qe6 21. d5 Qd7 22. Nf5 Nxc4 23. Nxg7 Kxg7 24. Qf6+ Kf8 1-0

[Event "NED-chT 0910"]
[Site "Netherlands"]
[Date "2010.02.06"]
[Round "6.9"]
[White "Koopmans, Cees"]
[Black "Verlinde, Tieme"]
[Result "0-1"]
[ECO "D27"]
[WhiteElo "2137"]
[BlackElo "2184"]
[PlyCount "86"]
[EventDate "2009.09.26"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Nijmegen"]
[BlackTeam "Sas van Gent"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 c5 6. 0-0 a6 7. a4 Nc6 8. Qe2 cxd4 9. Rd1 d3 10. Rxd3 Qc7 11. Nc3 Bc5 12. h3 0-0 13. e4 Nd7 14. Rd1 b6 15. Be3 Bxe3 16. Qxe3 Nb4 17. Qe2 Bb7 18. Nd4 Nc5 19. Rac1 Rfd8 20. Nb3 h6 21. Nxc5 Qxc5 22. Bb3 Qg5 23. Rxd8+ Rxd8 24. Rd1 Nc6 25. Rxd8+ Qxd8 26. Qe3 Nd4 27. Bc4 Nc6 28. Qd3 Qc7 29. Bb3 Qe7 30. Qe3 Qb4 31. Ne2 Na5 32. Bc2 Qxb2 33. Qd3 Qa1+ 34. Kh2 Qe5+ 35. f4 Qc7 36. e5 g6 37. Nc3 Kg7 38. Qg3 Nc4 39. Be4 Nd2 40. Qd3 Nxe4 41. Nxe4 Qc6 42. Qd8 Qxe4 43. Qf6+ Kg8 0-1

[Event "NED-chT 0910"]
[Site "Netherlands"]
[Date "2009.12.12"]
[Round "4.8"]
[White "Vedder, Henk"]
[Black "Koopmans, Cees"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2364"]
[BlackElo "2158"]
[PlyCount "37"]
[EventDate "2009.09.26"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Hilversum HSG"]
[BlackTeam "Nijmegen"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Be3 Bb4 7. Nxc6 bxc6 8. Bd3 0-0 9. 0-0 e5 10. f4 d5 11. fxe5 Bxc3 12. exf6 Bxf6 13. exd5 cxd5 14. c3 Be6 15. Qa4 Re8 16. Rae1 Rb8 17. Rf2 Rb7 18. Rxf6 gxf6 19. Qh4 1-0

[Event "NED-chT 0910"]
[Site "Netherlands"]
[Date "2009.11.21"]
[Round "3.9"]
[White "Rietman, Frits"]
[Black "Koopmans, Cees"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2251"]
[BlackElo "2158"]
[PlyCount "81"]
[EventDate "2009.09.26"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Groningen Hotels"]
[BlackTeam "Nijmegen"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. Bd3 e5 8. f4 d6 9. 0-0 Be7 10. Kh1 0-0 11. fxe5 dxe5 12. b3 Be6 13. Bb2 Qc7 14. Qe2 Nd7 15. Bc4 Nc5 16. Nd1 Rfe8 17. Ne3 Bf8 18. Bxe6 Nxe6 19. Rad1 Rad8 20. g3 Bc5 21. Nf5 Nd4 22. Bxd4 Bxd4 23. Qg4 f6 24. Rd3 Bc5 25. Rfd1 Rxd3 26. Rxd3 Kh8 27. Qd1 Bf8 28. Kg2 g6 29. Rd7 Qa5 30. Nd6 Re6 31. Nc8 Qb4 32. c4 a5 33. Rc7 Qc3 34. Qd7 Qc2+ 35. Kh3 Re7 36. Nxe7 Qxe4 37. Nxc6 g5 38. Rc8 Kg8 39. Ne7+ Kf7 40. Nf5+ Kg6 41. Rxf8 1-0

[Event "NED-chT 0910"]
[Site "Netherlands"]
[Date "2009.10.31"]
[Round "2.7"]
[White "Koopmans, Cees"]
[Black "Tjiam, Dharma"]
[Result "0-1"]
[ECO "E16"]
[WhiteElo "2163"]
[BlackElo "2376"]
[PlyCount "98"]
[EventDate "2009.09.26"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Nijmegen"]
[BlackTeam "Utrecht"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. g3 Bb7 6. Bg2 0-0 7. 0-0 d5 8. a3 Be7 9. Ne5 a5 10. Qc2 Ra7 11. Rd1 Qc8 12. Ndf3 dxc4 13. Nxc4 Be4 14. Qb3 Qb7 15. a4 Nc6 16. Ne1 Bxg2 17. Nxg2 Rd8 18. Be3 Raa8 19. f3 Rd7 20. Bf2 Rad8 21. e3 Nd5 22. Ne1 Bf6 23. Rd2 Ncb4 24. Rad1 g6 25. Kg2 Bg7 26. Nc2 Nxc2 27. Qxc2 Nb4 28. Qe4 Qd5 29. b3 f5 30. Qxd5 exd5 31. Nb2 Bf8 32. Nd3 c5 33. Nxb4 axb4 34. dxc5 bxc5 35. Rc2 Kf7 36. Be1 Ke6 37. Rd3 Rb8 38. Rc1 Rbb7 39. Kf2 Rbc7 40. e4 fxe4 41. fxe4 dxe4 42. Rxd7 Rxd7 43. Ke2 Rd3 44. Rb1 Kd5 45. Bd2 Bd6 46. Be3 Kc6 47. Bg5 Be5 48. Be7 Bd4 49. Bg5 Rf3 0-1

[Event "NED-chT 0910"]
[Site "Netherlands"]
[Date "2009.09.29"]
[Round "1.8"]
[White "Koopmans, Cees"]
[Black "Martens, Martin"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "2163"]
[BlackElo "2413"]
[PlyCount "82"]
[EventDate "2009.09.26"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Nijmegen"]
[BlackTeam "Rotterdam Schrijvers"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 g6 2. c4 Bg7 3. Nf3 d6 4. e4 Nd7 5. Be2 e5 6. 0-0 Nh6 7. Nc3 0-0 8. Re1 c6 9. h3 f6 10. b3 Nf7 11. Be3 Bh6 12. Bf1 Bxe3 13. Rxe3 Re8 14. Qd2 Qe7 15. b4 a5 16. b5 Nf8 17. bxc6 bxc6 18. d5 c5 19. Nb5 f5 20. Ra3 Qd8 21. h4 h6 22. g3 Nh7 23. Bg2 Nf6 24. Nh2 Kg7 25. Re1 Bd7 26. Nc3 Rb8 27. f4 Rb4 28. Qd3 exf4 29. gxf4 Nh5 30. Ne2 Qxh4 31. Nf3 fxe4 32. Qc3+ Qf6 33. Qxf6+ Nxf6 34. Nd2 a4 35. Ng3 g5 36. fxg5 Nxg5 37. Ngxe4 Bf5 38. Rae3 Bxe4 39. Bxe4 Rb2 40. Nf3 Nh3+ 41. Kh1 Rxe4 0-1

[Event "NED-chT 0607"]
[Site "Netherlands"]
[Date "2006.12.16"]
[Round "4.9"]
[White "Koopmans, Cees"]
[Black "Erwich, Marc"]
[Result "1-0"]
[ECO "E52"]
[BlackElo "2390"]
[PlyCount "91"]
[EventDate "2006.09.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]
[WhiteTeam "Nijmegen"]
[BlackTeam "Utrecht"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Bb7 6. Bd3 0-0 7. 0-0 d5 8. Bd2 Bxc3 9. Bxc3 Nbd7 10. b3 Ne4 11. Bb2 f5 12. Rc1 f4 13. cxd5 exd5 14. exf4 Rxf4 15. g3 Rf8 16. Ne1 Ndf6 17. f3 Nd6 18. Ng2 Qd7 19. Qd2 Rac8 20. Qg5 Rce8 21. Rce1 Nf7 22. Qf5 Qd6 23. Qf4 Bc8 24. Qxd6 Nxd6 25. Ba3 Rd8 26. Re5 Rf7 27. Nf4 c6 28. Ne6 Bxe6 29. Rxe6 Rfd7 30. Rc1 Kf7 31. Re2 Nb5 32. Bb2 Rd6 33. Rec2 Nc7 34. Rxc6 Rxc6 35. Rxc6 Ne6 36. Kf2 Re8 37. Bf5 g6 38. Bd3 Ng5 39. Rc7+ Re7 40. Rxe7+ Kxe7 41. Ke3 Ke6 42. h4 Nf7 43. g4 Nd6 44. Kf4 Nf7 45. Ba3 Nd7 46. Ba6 1-0

[Event "NED-chT 9697"]
[Site "Netherlands"]
[Date "1996.??.??"]
[Round "?"]
[White "Koopmans, Cees"]
[Black "De Wit, Dick"]
[Result "0-1"]
[ECO "E63"]
[BlackElo "2305"]
[PlyCount "98"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[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. g3 0-0 5. Bg2 d6 6. Nf3 Nc6 7. 0-0 a6 8. d5 Na5 9. Qd3 c5 10. dxc6 Nxc6 11. e4 Bg4 12. Bd2 Nd7 13. b3 Nc5 14. Qe3 Rc8 15. Rac1 Nb4 16. h3 Bd7 17. Nd5 Nxd5 18. exd5 a5 19. Bc3 Re8 20. Bxg7 Kxg7 21. Nd4 Rb8 22. a3 e5 23. dxe6 Bxe6 24. b4 axb4 25. axb4 Qf6 26. bxc5 Bxc4 27. Qd2 Bxf1 28. Bxf1 dxc5 29. Rxc5 Rbd8 30. Rc4 Re4 31. Qb4 Rdxd4 32. Rxd4 Qxd4 33. Qxb7 Re1 34. Kg2 Re6 35. Qb5 Rb6 36. Qd3 Qxd3 37. Bxd3 Rb3 38. Be4 Kf6 39. h4 Ke5 40. Bc6 f5 41. h5 g5 42. f3 Rc3 43. Bb7 Kd4 44. g4 Rc2+ 45. Kg1 fxg4 46. fxg4 h6 47. Ba6 Ke3 48. Bb5 Kf3 49. Bd7 Rg2+ 0-1

[Event "NED-chT 9697"]
[Site "Netherlands"]
[Date "1996.??.??"]
[Round "?"]
[White "Obers, Frits"]
[Black "Koopmans, Cees"]
[Result "0-1"]
[ECO "E48"]
[WhiteElo "2145"]
[PlyCount "56"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[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. e3 c5 5. Bd3 Nc6 6. Nge2 0-0 7. 0-0 cxd4 8. exd4 d5 9. cxd5 Nxd5 10. Bc2 Be7 11. a3 Nxc3 12. bxc3 Bf6 13. Ng3 g6 14. Nh5 Bh8 15. Bh6 gxh5 16. Qxh5 f5 17. Bxf8 Qxf8 18. Rfe1 Qf7 19. Qf3 Bd7 20. Bb3 Re8 21. Rad1 Nd8 22. c4 Bf6 23. Qg3+ Kh8 24. f4 Qg7 25. Qxg7+ Kxg7 26. Kf2 Nc6 27. Ke3 Rd8 28. Rd2 Be8 0-1

[Event "NED-chT 9697"]
[Site "Netherlands"]
[Date "1996.??.??"]
[Round "?"]
[White "Van Arkel, Rogier"]
[Black "Koopmans, Cees"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "2145"]
[PlyCount "77"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[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. g3 g6 4. Bg2 Bg7 5. d3 e6 6. f4 Nge7 7. Be3 d6 8. Nf3 Nd4 9. 0-0 0-0 10. e5 Nef5 11. Bf2 Rb8 12. Ne4 b6 13. Nxd4 cxd4 14. g4 dxe5 15. fxe5 Nh4 16. Bh1 Bb7 17. Qe1 g5 18. Bg3 Bxe4 19. Qxe4 Ng6 20. Rac1 Qc7 21. Rfe1 Rbd8 22. c4 dxc3 23. bxc3 Rd5 24. d4 Ra5 25. Rc2 Qc4 26. Ree2 Rc8 27. Qe3 Ra3 28. d5 Nf4 29. Bxf4 gxf4 30. Qd4 exd5 31. Bxd5 Qxd4+ 32. cxd4 Rd8 33. Bb3 Rxd4 34. Rc8+ Bf8 35. Rc7 f3 36. Re1 Rxg4+ 37. Kf2 Rf4 38. Rg1+ Kh8 39. Rc8 1-0

[Event "NED Open-ch10 Reinbouw"]
[Site "Dieren"]
[Date "1979.08.07"]
[Round "7"]
[White "Koopmans, Cees"]
[Black "Van Parreren, Hanneke"]
[Result "1-0"]
[ECO "B08"]
[BlackElo "2005"]
[PlyCount "59"]
[EventDate "1979.07.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 c6 7. a4 a5 8. Bg5 Qc7 9. Qd2 Na6 10. Rad1 Bg4 11. h3 Bxf3 12. Bxf3 Nb4 13. d5 Rfe8 14. Be2 Nd7 15. f4 Rac8 16. dxc6 bxc6 17. Bc4 Nc5 18. f5 Rf8 19. Bh6 Bxh6 20. Qxh6 d5 21. fxg6 hxg6 22. exd5 cxd5 23. Nxd5 Nxd5 24. Rxd5 Nd7 25. Bb3 Qa7+ 26. Kh1 e6 27. Rg5 Qa6 28. Rxg6+ fxg6 29. Qxg6+ Kh8 30. Qh6+ 1-0

[Event "NED Open-ch10 Reinbouw"]
[Site "Dieren"]
[Date "1979.07.31"]
[Round "1"]
[White "Koopmans, Cees"]
[Black "Van der Sterren, Paul"]
[Result "0-1"]
[ECO "B85"]
[BlackElo "2400"]
[PlyCount "60"]
[EventDate "1979.07.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. 0-0 0-0 8. f4 a6 9. a4 Nc6 10. Be3 Qc7 11. Kh1 Re8 12. Nb3 b6 13. Bf3 Rb8 14. Qe2 e5 15. f5 Nb4 16. g4 d5 17. exd5 Bb7 18. Rad1 e4 19. Nxe4 Nxe4 20. Bxe4 Bd6 21. Bf3 Nxc2 22. Rd3 Nxe3 23. Rxe3 Rxe3 24. Qxe3 Bxh2 25. Re1 Bd6 26. Nd4 Qd8 27. g5 Bc5 28. Ne6 Qxd5 29. Nd4 Qxd4 30. Qxd4 Bxf3+ 0-1

[Event "NED U20-ch"]
[Site "Oostvoorne"]
[Date "1972.??.??"]
[Round "3"]
[White "De Jong, Tom"]
[Black "Koopmans, Cees"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "103"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. Bg5 h6 7. Bf4 Nc6 8. d5 e5 9. Be3 Ne7 10. h3 a6 11. Qd2 Kh7 12. g4 Nxe4 13. Nxe4 f5 14. gxf5 gxf5 15. Neg5+ hxg5 16. Nxg5+ Kh8 17. f4 Ng6 18. 0-0-0 Qf6 19. c3 b5 20. h4 Nxf4 21. Bxf4 exf4 22. Nf3 Bd7 23. h5 Bh6 24. Rdg1 Rg8 25. Rg6 Rxg6 26. hxg6 Qxg6 27. Qd4+ Kh7 28. Rg1 Bg7 29. Qf2 Qf6 30. Ng5+ Kg8 31. Qh2 b4 32. Bh5 Rf8 33. Bg6 Qxg6 34. Ne6 Qxg1+ 35. Qxg1 Bxe6 36. dxe6 bxc3 37. bxc3 Rf6 38. Qa7 Rxe6 39. Qxc7 Kh7 40. Qc8 Re5 41. Qxa6 f3 42. Qf1 Bh6+ 43. Kc2 Re3 44. a4 Bg7 45. Kb3 Rxc3+ 46. Kb4 Bd4 47. a5 f2 48. a6 Re3 49. Qb1 Kg6 50. Qa2 f1Q 51. Qg8+ Kh5 52. Qh7+ 0-1

[Event "NED U20-ch"]
[Site "Oostvoorne"]
[Date "1972.??.??"]
[Round "1"]
[White "Hofland, Leonhard"]
[Black "Koopmans, Cees"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "85"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. e5 dxe5 6. dxe5 Ng4 7. Qxd8+ Kxd8 8. Rd1+ Bd7 9. e6 fxe6 10. Nf3 Nc6 11. Bc4 Ke8 12. 0-0 Nge5 13. Nxe5 Nxe5 14. Bb3 c5 15. Bf4 Rf8 16. Bg3 b5 17. Rfe1 Rf5 18. Rxd7 Kxd7 19. Rd1+ Kc6 20. Bxe6 Nc4 21. Bd7+ Kb6 22. Bxf5 gxf5 23. Nd5+ Ka5 24. Nxe7 Nxb2 25. Re1 Rf8 26. Nd5 Rf7 27. Re6 b4 28. Nc7 Rf6 29. Re7 Bf8 30. Rd7 f4 31. Bh4 Rd6 32. Rxd6 Bxd6 33. Bd8 Ka4 34. g4 fxg3 35. hxg3 Bxc7 36. Bxc7 Ka3 37. f4 Kxa2 38. f5 b3 39. cxb3 Kxb3 40. f6 c4 41. f7 c3 42. f8Q c2 43. Bf4 1-0

[Event "NED U20-ch"]
[Site "Oostvoorne"]
[Date "1972.??.??"]
[Round "7"]
[White "Koopmans, Cees"]
[Black "Bartels, Hans A"]
[Result "0-1"]
[ECO "D40"]
[PlyCount "88"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[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. Nf3 c5 4. e3 cxd4 5. exd4 d5 6. a3 Be7 7. Nc3 0-0 8. Bd3 dxc4 9. Bxc4 a6 10. 0-0 b5 11. Ba2 Bb7 12. Qd3 Nbd7 13. Rd1 Nb6 14. Bg5 Nbd5 15. Bb1 Nxc3 16. Bxf6 Nxb1 17. Ng5 g6 18. Qh3 h5 19. Bxe7 Qxe7 20. f4 Qf6 21. Qe3 Nxa3 22. Rxa3 Rac8 23. Qf2 Qf5 24. Rad3 Qxd3 25. Rxd3 Rc1+ 26. Qf1 Rxf1+ 27. Kxf1 Rc8 28. Rd2 Rc1+ 29. Kf2 Kf8 30. g3 Ke7 31. Ke3 f6 32. Nh3 Kd6 33. Nf2 Re1+ 34. Kd3 Bd5 35. Nd1 Be4+ 36. Kc3 a5 37. b3 Kd5 38. Kb2 b4 39. Nf2 Bf3 40. Nd3 Re2 41. Rxe2 Bxe2 42. Nc5 e5 43. dxe5 Kxc5 44. exf6 Kd6 0-1

[Event "NED U20-ch"]
[Site "Oostvoorne"]
[Date "1972.??.??"]
[Round "2"]
[White "Koopmans, Cees"]
[Black "Bernink, Henk"]
[Result "1/2-1/2"]
[ECO "D88"]
[PlyCount "114"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[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 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 0-0 8. Ne2 c5 9. 0-0 Nc6 10. Be3 cxd4 11. cxd4 Na5 12. Rc1 Nxc4 13. Rxc4 b6 14. Qa4 Qd7 15. Qa3 Bb7 16. d5 b5 17. Rc2 a5 18. Bd4 b4 19. Qb2 Bxd4 20. Nxd4 Rfc8 21. Rfc1 Rxc2 22. Rxc2 Rc8 23. Qc1 Rxc2 24. Qxc2 e6 25. Qc5 exd5 26. Qxa5 Qe7 27. e5 Qg5 28. Qc5 Qd2 29. h3 Qe1+ 30. Kh2 Qxe5+ 31. g3 Qe1 32. Qc2 Ba6 33. Nf3 Qe2 34. Qxe2 Bxe2 35. Nd4 Bc4 36. Nc2 b3 37. axb3 Bxb3 38. Nd4 Bd1 39. Kg2 Kg7 40. f4 Kf6 41. Kf2 Ke7 42. Ke3 Kd6 43. h4 Kc5 44. f5 Kc4 45. fxg6 hxg6 46. Nc6 Kc3 47. Nd4 Bg4 48. Nc6 Bd7 49. Nd4 Ba4 50. Nf3 Bb3 51. Nd4 Bd1 52. Nc6 Bb3 53. Nd4 Bc4 54. g4 Ba6 55. h5 gxh5 56. gxh5 Bd3 57. h6 Bg6 1/2-1/2

[Event "NED U20-ch"]
[Site "Oostvoorne"]
[Date "1972.??.??"]
[Round "4"]
[White "Koopmans, Cees"]
[Black "Van der Sterren, Paul"]
[Result "1-0"]
[ECO "E94"]
[PlyCount "53"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[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. Be2 0-0 6. Nf3 e5 7. Be3 c6 8. 0-0 Nbd7 9. Qc2 Ng4 10. Bg5 Qa5 11. Be7 Re8 12. Bxd6 exd4 13. Nxd4 Nde5 14. Rad1 Be6 15. b4 Qa3 16. Nb1 Qa6 17. Nxe6 Rxe6 18. c5 b5 19. h3 Nh6 20. Nd2 Qa3 21. f4 Qe3+ 22. Rf2 Nc4 23. e5 Nxd6 24. cxd6 g5 25. Qxc6 Rd8 26. Nf1 Qa3 27. Qc7 1-0

[Event "NED U20-ch"]
[Site "Oostvoorne"]
[Date "1972.??.??"]
[Round "5"]
[White "Van Dijk, Bram"]
[Black "Koopmans, Cees"]
[Result "1/2-1/2"]
[ECO "A07"]
[PlyCount "67"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. 0-0 Be7 5. d3 0-0 6. Nbd2 Nbd7 7. e4 dxe4 8. dxe4 c6 9. e5 Ng4 10. Re1 f6 11. exf6 Ndxf6 12. h3 Nh6 13. Qe2 Nf5 14. g4 Nd4 15. Nxd4 Qxd4 16. Nf3 Qb6 17. Ne5 Nd5 18. Nd3 Bh4 19. c4 Ne7 20. Be3 Qc7 21. Bd4 Ng6 22. Qe4 Bd7 23. Rad1 Rae8 24. Be3 e5 25. Nc5 Bc8 26. Qc2 Nf4 27. Bxf4 exf4 28. Rxe8 Rxe8 29. Be4 h6 30. Bh7+ Kh8 31. Bf5 b6 32. Bxc8 Qxc8 33. Ne4 Qc7 34. f3 1/2-1/2

[Event "NED U20-ch"]
[Site "Oostvoorne"]
[Date "1972.??.??"]
[Round "8"]
[White "Van der Hauw, Henk"]
[Black "Koopmans, Cees"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "59"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. f4 0-0 6. e5 Ne8 7. Nf3 h6 8. Bh4 Bg4 9. h3 Bxf3 10. Qxf3 c5 11. dxc5 Nc6 12. cxd6 g5 13. dxe7 Qxe7 14. Nd5 Qc5 15. c3 Rd8 16. Rd1 Qa5 17. Bg3 Qxa2 18. fxg5 hxg5 19. Ne7+ Nxe7 20. Rxd8 Qxb2 21. Rd2 Qb3 22. Bd3 Ng6 23. 0-0 Qxc3 24. Bxg6 Qxf3 25. Rxf3 fxg6 26. Rc3 Rf5 27. Rc8 Kf7 28. Rd7+ Ke6 29. Rxb7 Rf8 30. Rxg7 1-0

[Event "NED U20-ch"]
[Site "Oostvoorne"]
[Date "1972.??.??"]
[Round "6"]
[White "Van der Wey, Anton"]
[Black "Koopmans, Cees"]
[Result "1/2-1/2"]
[ECO "A28"]
[PlyCount "44"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Qc2 Nb6 7. Bb5 Bd6 8. 0-0 0-0 9. Bxc6 bxc6 10. d4 exd4 11. Nxd4 c5 12. Nf5 Be5 13. Ng3 f5 14. f4 Bd6 15. e4 fxe4 16. Ncxe4 Qe7 17. Bd2 h6 18. Rae1 Qf7 19. Bc3 Nd5 20. Be5 Ba6 21. Rf3 Rad8 22. a3 Qe7 1/2-1/2

