[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1984.01.15"]
[Round "3"]
[White "Bohm, Hans"]
[Black "Koopman, Hendrik"]
[Result "1-0"]
[ECO "D07"]
[WhiteElo "2410"]
[PlyCount "79"]
[EventDate "1984.01.13"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nc6 3. e3 e5 4. dxe5 Bb4+ 5. Bd2 dxc4 6. Nf3 Bg4 7. Bxc4 Qd7 8. Bxb4 Qxd1+ 9. Kxd1 Nxb4 10. Nc3 Nc6 11. e6 Bxe6 12. Bxe6 fxe6 13. Ke2 Nf6 14. Rhd1 Ke7 15. Nd4 Nxd4+ 16. Rxd4 Rhd8 17. Rad1 a6 18. e4 Rxd4 19. Rxd4 Rd8 20. Rxd8 Kxd8 21. h3 Nd7 22. f4 Ke7 23. Ke3 h6 24. e5 Kf7 25. a4 Kg6 26. g4 Kf7 27. Kd4 Ke7 28. Ne4 Kf7 29. b4 Ke7 30. Nc5 Nxc5 31. bxc5 Kd7 32. a5 g6 33. h4 h5 34. gxh5 gxh5 35. Ke4 Kc6 36. f5 exf5+ 37. Kxf5 b5 38. cxb6 cxb6 39. e6 bxa5 40. Kf6 1-0

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1984.01.14"]
[Round "2"]
[White "Koopman, Hendrik"]
[Black "Henneberke, Frans"]
[Result "1-0"]
[ECO "B13"]
[PlyCount "71"]
[EventDate "1984.01.13"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Bg4 6. Qa4+ Qd7 7. Bb5 Nc6 8. h3 Bh5 9. g4 Bg6 10. Nf3 Be4 11. Ne5 Qe6 12. Rh2 Nd7 13. Bxc6 bxc6 14. Qxc6 Qxc6 15. Nxc6 f6 16. Nd2 Bd3 17. Nb4 Be4 18. f3 a5 19. fxe4 axb4 20. cxb4 e6 21. Re2 Kf7 22. b5 Bb4 23. a4 Rhb8 24. exd5 exd5 25. Kf2 Rxb5 26. axb5 Rxa1 27. Nb3 Ra7 28. Rc2 Rb7 29. Nc5 Nxc5 30. dxc5 Rxb5 31. Be3 Ke7 32. Kf3 Kd7 33. c6+ Kc8 34. Bf4 Bc5 35. Re2 Rb3+ 36. Kg2 1-0

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1984.01.13"]
[Round "1"]
[White "Koopman, Hendrik"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "B08"]
[BlackElo "2435"]
[PlyCount "100"]
[EventDate "1984.01.13"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be2 Bg7 5. Nf3 0-0 6. 0-0 c6 7. a4 Qc7 8. h3 e5 9. Be3 exd4 10. Bxd4 Re8 11. Nd2 Nbd7 12. Re1 b6 13. f3 Bb7 14. Nf1 Rad8 15. Qd2 Nc5 16. Bc4 Ne6 17. Bf2 d5 18. exd5 cxd5 19. Bd3 Nh5 20. Nb5 Qb8 21. c3 Nhf4 22. Ng3 Ba6 23. Bf1 Nc5 24. Rxe8+ Rxe8 25. Qc2 Bc8 26. Nd4 Bd7 27. a5 Be5 28. b4 Nce6 29. Nge2 Rc8 30. axb6 axb6 31. Qb3 Nxe2+ 32. Nxe2 Bb5 33. Qxd5 Bxe2 34. Bxe2 Nf4 35. Qb5 Bxc3 36. Rb1 Qd6 37. Bc4 Bd4 38. Bf1 Bxf2+ 39. Kxf2 Rc2+ 40. Kg1 Nxh3+ 41. Kh1 Nf2+ 42. Kg1 Qd4 43. Qe8+ Kg7 44. Qe7 Ne4+ 45. Kh1 Ng3+ 46. Kh2 Qf4 47. Kh3 Nf5 48. Qe1 Qh6+ 49. Kg4 Ne3+ 50. Kg3 Qg5+ 0-1

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1982.01.17"]
[Round "3"]
[White "Koopman, Hendrik"]
[Black "Hartoch, Robert G"]
[Result "0-1"]
[ECO "A61"]
[BlackElo "2390"]
[PlyCount "82"]
[EventDate "1982.01.15"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Bg5 Bg7 8. Nd2 h6 9. Bh4 g5 10. Bg3 Nh5 11. e3 Nxg3 12. hxg3 Nd7 13. Qc2 a6 14. a4 Ne5 15. Nc4 Nxc4 16. Bxc4 0-0 17. Ba2 f5 18. Bb1 Bd7 19. 0-0 b5 20. g4 b4 21. Ne2 Qf6 22. Ra2 h5 23. gxf5 Bxf5 24. e4 Bg6 25. b3 Qe5 26. Qc4 h4 27. Nc1 g4 28. Re2 g3 29. Nd3 Qd4 30. Qxd4 Bxd4 31. Kh1 Rae8 32. f3 Rxe4 33. Rfe1 Rxe2 34. Rxe2 Re8 35. Rxe8+ Bxe8 36. Nf4 c4 37. bxc4 Bxa4 38. Ne6 Be3 39. Nd8 Bd1 40. Nb7 b3 41. Be4 Bc5 0-1

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1982.01.16"]
[Round "2"]
[White "Bohm, Hans"]
[Black "Koopman, Hendrik"]
[Result "1/2-1/2"]
[ECO "C69"]
[WhiteElo "2410"]
[PlyCount "34"]
[EventDate "1982.01.15"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. d3 f6 7. Be3 Qd7 8. Nbd2 Ne7 9. h3 Be6 10. d4 Ng6 11. dxe5 fxe5 12. Ng5 Bg8 13. Qh5 0-0-0 14. Rfd1 Qe8 15. Nb3 Bd6 16. Qe2 Qe7 17. Nf3 h6 1/2-1/2

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1982.01.15"]
[Round "1"]
[White "Kuijpers, Frans"]
[Black "Koopman, Hendrik"]
[Result "1-0"]
[ECO "C08"]
[WhiteElo "2410"]
[PlyCount "83"]
[EventDate "1982.01.15"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 a6 4. Ngf3 c5 5. exd5 exd5 6. dxc5 Bxc5 7. Bd3 Qe7+ 8. Qe2 Qxe2+ 9. Kxe2 Nf6 10. Re1 0-0 11. Kf1 Nc6 12. c3 h6 13. h3 b5 14. Nb3 Bd6 15. Nbd4 Ne7 16. a4 b4 17. cxb4 Bxb4 18. Bd2 Bd6 19. Bc3 Nd7 20. Bc2 Bb7 21. Rad1 Rfe8 22. a5 Nc5 23. Bb4 Ng6 24. Ba3 Bf8 25. g3 Rac8 26. Bf5 Rb8 27. Rxe8 Rxe8 28. Rc1 Ne4 29. Bxf8 Kxf8 30. Rc7 Re7 31. Rc2 Re8 32. Bd7 Rb8 33. h4 h5 34. b3 Ne7 35. Rc7 Bc8 36. Ne5 Nd2+ 37. Ke1 Nxb3 38. Nxb3 Rxb3 39. Bxc8 Rb1+ 40. Kd2 Rb5 41. Bxa6 Rxa5 42. Bd3 1-0

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1979.01.21"]
[Round "3"]
[White "Koopman, Hendrik"]
[Black "Kuijpers, Frans"]
[Result "1/2-1/2"]
[ECO "D02"]
[BlackElo "2410"]
[PlyCount "126"]
[EventDate "1979.01.19"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 c5 4. c3 Nc6 5. e3 d5 6. Nbd2 Bd6 7. Ne5 Qc7 8. Ndf3 Ne4 9. Nxc6 bxc6 10. Bxd6 Qxd6 11. Bd3 cxd4 12. Bxe4 dxe4 13. Qxd4 Qxd4 14. Nxd4 Kd7 15. Nb3 Kc7 16. Nc5 f5 17. Kd2 a5 18. Kc2 Rd8 19. b4 e5 20. a4 f4 21. Rhd1 Bf5 22. Rxd8 Rxd8 23. Rd1 Ra8 24. Kb3 g5 25. Kc4 h5 26. b5 g4 27. g3 Re8 28. Rb1 Kb6 29. Rd1 Kc7 30. Kb3 Kb6 31. Na6 Bc8 32. Rd6 Re6 33. c4 Rxd6 34. c5+ Kb7 35. cxd6 Kb6 36. Nc7 Bd7 37. Kc4 fxg3 38. fxg3 Bc8 39. Na8+ Kb7 40. Nc7 Kb6 41. Na8+ Kb7 42. Kc5 cxb5 43. Nb6 bxa4 44. d7 Bxd7 45. Nxd7 a3 46. Kc4 a2 47. Nc5+ Kc6 48. Nb3 Kd6 49. Kb5 Kd5 50. Na1 Kd6 51. Kc4 Kc6 52. Nc2 Kd6 53. Kc3 Kd5 54. Kb3 Kc5 55. Kc3 Kd5 56. Na1 Kc5 57. Nb3+ Kd5 58. Kc2 a4 59. Na1 Kc4 60. Kd2 Kb4 61. Kc2 Kc4 62. Kd2 Kb4 63. Kc2 Kc4 1/2-1/2

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1979.01.20"]
[Round "2"]
[White "Van Scheltinga, Theo D"]
[Black "Koopman, Hendrik"]
[Result "1/2-1/2"]
[ECO "E17"]
[WhiteElo "2290"]
[PlyCount "30"]
[EventDate "1979.01.19"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. b3 d5 8. Bb2 Nbd7 9. Nbd2 c5 10. e3 Rc8 11. Qe2 Rc7 12. Rfd1 Qa8 13. Ne5 cxd4 14. Nxd7 Nxd7 15. Bxd4 dxc4 1/2-1/2

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1979.01.19"]
[Round "1"]
[White "Koopman, Hendrik"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "D35"]
[BlackElo "2345"]
[PlyCount "80"]
[EventDate "1979.01.19"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. cxd5 exd5 5. Nf3 Bf5 6. Bf4 Bd6 7. Bxd6 Qxd6 8. e3 Nf6 9. Bd3 Bxd3 10. Qxd3 Nbd7 11. 0-0 0-0 12. Rad1 Rfe8 13. Rfe1 Ne4 14. Nd2 f5 15. f3 Nxd2 16. Rxd2 Qg6 17. Ne2 Qf7 18. Qc3 Re7 19. Nf4 Rae8 20. Rde2 g5 21. Nd3 f4 22. Nc1 fxe3 23. Rxe3 Nf8 24. Rxe7 Rxe7 25. Nd3 Rxe1+ 26. Qxe1 Qf5 27. Qe3 Ne6 28. b4 Qf6 29. Qe5 Qxe5 30. dxe5 Kf7 31. g3 b6 32. Kf2 Nd4 33. f4 g4 34. Ke3 Nf5+ 35. Kd2 h5 36. Nf2 Ke6 37. Nd1 Nd4 38. Kd3 Nf3 39. h4 gxh3 40. Nf2 h2 0-1

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1975.01.19"]
[Round "3"]
[White "Van Scheltinga, Theo D"]
[Black "Koopman, Hendrik"]
[Result "1/2-1/2"]
[ECO "D11"]
[PlyCount "115"]
[EventDate "1975.01.17"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. cxd5 Nxd5 6. Be2 e6 7. e4 Nf6 8. Nc3 Be7 9. 0-0 0-0 10. h3 Bh5 11. Be3 Nbd7 12. Qc2 Rc8 13. Rad1 Qc7 14. Bg5 h6 15. Bh4 Bg6 16. Bg3 Qa5 17. Ne5 Nxe5 18. Bxe5 c5 19. Bxf6 Bxf6 20. d5 Rfe8 21. dxe6 Rxe6 22. Bg4 Rce8 23. Bxe6 Rxe6 24. f3 Re8 25. Qa4 Qxa4 26. Nxa4 Bd4+ 27. Kh1 f5 28. exf5 Bxf5 29. Rfe1 Rb8 30. Nc3 b5 31. Nd5 Kh8 32. Ne7 Bd7 33. b4 Be8 34. bxc5 Bxc5 35. Re5 Ba3 36. h4 a5 37. h5 a4 38. Ng6+ Kh7 39. Red5 Rb6 40. Nf8+ Bxf8 41. Rd8 Re6 42. Rc1 Bd6 43. g4 Kg8 44. Rc6 Re1+ 45. Kg2 Bf4 46. Rc5 Bg5 47. Ra8 b4 48. Rc4 Bd2 49. f4 Kf7 50. Kf2 Re7 51. g5 hxg5 52. fxg5 Bxg5 53. Rxb4 Bf6 54. Rf4 Bd7 55. Ra6 Re6 56. Ra7 Ke7 57. Rfxa4 Re5 58. R4a5 1/2-1/2

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1975.01.18"]
[Round "2"]
[White "Koopman, Hendrik"]
[Black "Bouwmeester, Hans"]
[Result "0-1"]
[ECO "B45"]
[PlyCount "101"]
[EventDate "1975.01.17"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[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 Nc6 6. Bc4 Bb4 7. 0-0 0-0 8. Nde2 Ne5 9. Bb3 b6 10. Bf4 d6 11. f3 Ba6 12. Bxe5 dxe5 13. Qxd8 Rfxd8 14. Rfd1 Bc5+ 15. Kf1 Bd4 16. Ke1 Bxe2 17. Kxe2 Bxc3 18. Rxd8+ Rxd8 19. bxc3 Rc8 20. a4 Rxc3 21. a5 b5 22. Rd1 Rc8 23. c4 bxc4 24. Bxc4 Kf8 25. Bd3 Nd7 26. h4 Ke7 27. Rb1 Rb8 28. Rc1 Kd6 29. g4 Rb2+ 30. Ke3 Rb3 31. Ke2 Nc5 32. Bc4 Ra3 33. a6 Nxa6 34. Bxa6 Rxa6 35. Rc8 Rc6 36. Rd8+ Ke7 37. Rb8 Rc7 38. Kd3 h6 39. Kd2 Kd6 40. Kd3 Kc5 41. Kc3 a5 42. Ra8 Kb5+ 43. Kb2 Kb6 44. Rg8 f6 45. Re8 Kc5 46. Rxe6 Kd4 47. g5 hxg5 48. hxg5 fxg5 49. Rg6 Rf7 50. Rxg5 Rxf3 51. Rxg7 0-1

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1975.01.17"]
[Round "1"]
[White "Koopman, Hendrik"]
[Black "Van Geet, Dick Daniel"]
[Result "1/2-1/2"]
[ECO "B00"]
[PlyCount "64"]
[EventDate "1975.01.17"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 d5 3. Nc3 dxe4 4. d5 Nb8 5. Bc4 c6 6. Bf4 Nf6 7. dxc6 Qxd1+ 8. Rxd1 bxc6 9. Nge2 Nbd7 10. 0-0 e5 11. Bg5 h6 12. Bxf6 Nxf6 13. Ng3 Bg4 14. Rde1 Bb4 15. Ngxe4 0-0 16. Nxf6+ gxf6 17. Re3 Bf5 18. Ne4 Bxe4 19. Rxe4 Rab8 20. b3 Rfd8 21. Bd3 Rd4 22. Rxd4 exd4 23. g4 Re8 24. Kg2 Re1 25. Kf3 Kf8 26. Rxe1 Bxe1 27. Ke2 Ba5 28. Be4 c5 29. Kd3 Ke7 30. Kc4 Bb4 31. Kb5 a5 32. Kc6 Ba3 1/2-1/2

[Event "EU-ch U21 fin-A"]
[Site "Groningen"]
[Date "1974.01.04"]
[Round "9"]
[White "Urzica, Aurel"]
[Black "Koopman, Hendrik"]
[Result "1/2-1/2"]
[ECO "C84"]
[PlyCount "19"]
[EventDate "1973.12.26"]
[EventType "tourn"]
[EventRounds "9"]
[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. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. d4 exd4 7. e5 Ne4 8. Nxd4 Nxd4 9. Qxd4 Nc5 10. Nc3 1/2-1/2

[Event "EU-ch U21 fin-A"]
[Site "Groningen"]
[Date "1974.01.03"]
[Round "8"]
[White "Koopman, Hendrik"]
[Black "Pinter, Jozsef"]
[Result "0-1"]
[ECO "B76"]
[PlyCount "111"]
[EventDate "1973.12.26"]
[EventType "tourn"]
[EventRounds "9"]
[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 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 Bd7 9. 0-0-0 0-0 10. h4 Rc8 11. g4 Ne5 12. h5 Qa5 13. h6 Bh8 14. Kb1 Nxf3 15. Nxf3 Rxc3 16. Qxc3 Qxc3 17. bxc3 Nxe4 18. Bd4 Bxg4 19. Bg2 e5 20. Rhe1 f5 21. Rd3 exd4 22. cxd4 Bxf3 23. Bxf3 d5 24. c3 Rc8 25. Kb2 Kf7 26. Bd1 Ke7 27. Bb3 Kd6 28. a4 Bf6 29. Rc1 Bg5 30. Rc2 Rc7 31. Rh3 Nd2 32. Rh2 Nf1 33. Rh3 Ne3 34. Re2 f4 35. Bc2 Re7 36. Kb3 Re6 37. Bd3 Ke7 38. c4 Rb6+ 39. Kc3 dxc4 40. Bxc4 Kf6 41. Rf3 Nf5 42. Re8 Bxh6 43. Rh8 Bg7 44. Rxh7 Kg5 45. Bd3 Bxd4+ 46. Kc4 Rc6+ 47. Kd5 Rd6+ 48. Kc4 Ne3+ 49. Kb3 Rb6+ 50. Ka3 Nd5 51. Bb5 a6 52. Rd7 Bc5+ 53. Kb3 Nf6 54. Rc7 Bd6 55. Rf7 axb5 56. a5 0-1

[Event "EU-ch U21 fin-A"]
[Site "Groningen"]
[Date "1974.01.02"]
[Round "7"]
[White "Inkiov, Ventzislav"]
[Black "Koopman, Hendrik"]
[Result "1-0"]
[ECO "E06"]
[PlyCount "77"]
[EventDate "1973.12.26"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 c6 5. Nbd2 Be7 6. Bg2 0-0 7. 0-0 b6 8. Ne5 Bb7 9. e4 dxc4 10. Ndxc4 b5 11. Ne3 Qb6 12. N3g4 Rd8 13. Be3 Nbd7 14. Nxf6+ Bxf6 15. Qh5 Bxe5 16. dxe5 Qc7 17. f4 c5 18. Qe2 c4 19. Qf2 a5 20. Rfd1 Rdc8 21. Rd6 Nc5 22. Bxc5 Qxc5 23. Rd8+ Rxd8 24. Qxc5 Ba6 25. f5 b4 26. Qxa5 b3 27. a3 Rd3 28. Bf1 Rd4 29. Qc3 Rad8 30. Re1 Rd2 31. fxe6 Rc2 32. exf7+ Kxf7 33. e6+ Kxe6 34. Qxg7 Rdd2 35. Qh6+ Ke7 36. Qxa6 c3 37. Qb7+ Kd8 38. e5 cxb2 39. e6 1-0

[Event "EU-ch U21 fin-A"]
[Site "Groningen"]
[Date "1973.12.31"]
[Round "6"]
[White "Koopman, Hendrik"]
[Black "Mack, Peter"]
[Result "1/2-1/2"]
[ECO "C17"]
[PlyCount "95"]
[EventDate "1973.12.26"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Ne7 6. dxc5 Nd7 7. Qg4 Bxc5 8. Qxg7 Ng6 9. Qh6 Ndxe5 10. Nh3 Bd7 11. 0-0-0 Ng4 12. Qh5 Qh4 13. Qxh4 Nxh4 14. Be2 Nxf2 15. Nxf2 Bxf2 16. Nb5 0-0 17. Nd6 Bc6 18. b4 Rad8 19. Rhf1 Bb6 20. Bg5 Rxd6 21. Bxh4 Bd8 22. Bf2 b6 23. Bg3 e5 24. b5 Bb7 25. Rf5 f6 26. Rdf1 Be7 27. Be1 Rdd8 28. Bd2 d4 29. Bh6 Rfe8 30. Bh5 Be4 31. Rxf6 Bxf6 32. Bxe8 Rxe8 33. Rxf6 Bxg2 34. Kd2 Rc8 35. Kd3 Bd5 36. a4 Rc3+ 37. Kd2 Bf7 38. Rc6 Rxc6 39. bxc6 Bd5 40. c7 Bb7 41. c3 dxc3+ 42. Kxc3 Kf7 43. Be3 Ke6 44. a5 bxa5 45. Bxa7 Kf5 46. Bb6 a4 47. Kb4 e4 48. Kxa4 1/2-1/2

[Event "EU-ch U21 fin-A"]
[Site "Groningen"]
[Date "1973.12.30"]
[Round "5"]
[White "Koopman, Hendrik"]
[Black "Bjarnason, Saevar"]
[Result "1-0"]
[ECO "C16"]
[PlyCount "77"]
[EventDate "1973.12.26"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. Qg4 Bf8 6. Bg5 Qd7 7. 0-0-0 Nc6 8. h4 h6 9. Bf4 h5 10. Qe2 Nge7 11. f3 Nf5 12. Qf2 Be7 13. g3 Bb7 14. Bh3 0-0-0 15. Nge2 Kb8 16. Kb1 a6 17. Rhe1 Ka7 18. Bc1 Rc8 19. Nf4 g6 20. Nce2 Na5 21. b3 Qb5 22. Bb2 c5 23. Bxf5 gxf5 24. dxc5 bxc5 25. Nc3 Qc6 26. Ncxd5 exd5 27. Nxd5 Rhe8 28. c4 Ba8 29. f4 Nb7 30. Rd3 Bd8 31. Red1 Re6 32. Qe2 Rh6 33. Bc3 Qg6 34. Qc2 Na5 35. Qf2 Qe6 36. Kb2 Bxd5 37. Rxd5 Nb7 38. Rd6 Qxd6 39. exd6 1-0

[Event "EU-ch U21 fin-A"]
[Site "Groningen"]
[Date "1973.12.29"]
[Round "4"]
[White "Mestel, A Jonathan"]
[Black "Koopman, Hendrik"]
[Result "1-0"]
[ECO "B06"]
[PlyCount "41"]
[EventDate "1973.12.26"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 c6 3. c3 Bg7 4. f4 d5 5. e5 h5 6. Be3 Nh6 7. Nf3 Bf5 8. Nbd2 Nd7 9. h3 e6 10. Bf2 Bf8 11. Be2 Qc7 12. Nh2 c5 13. g4 hxg4 14. hxg4 Be4 15. Nxe4 dxe4 16. Nf1 Bg7 17. Ng3 Qc6 18. Qc2 e3 19. Bxe3 0-0-0 20. 0-0-0 Kb8 21. Qe4 1-0

[Event "EU-ch U21 fin-A"]
[Site "Groningen"]
[Date "1973.12.28"]
[Round "3"]
[White "Koopman, Hendrik"]
[Black "Makarichev, Sergey"]
[Result "0-1"]
[ECO "C12"]
[PlyCount "59"]
[EventDate "1973.12.26"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Bd3 Nxd2 9. Qxd2 c5 10. f4 Nc6 11. Nf3 Qa5 12. Rb1 c4 13. Be2 Qxa2 14. 0-0 Qa3 15. f5 exf5 16. Nh4 g6 17. e6 Bxe6 18. Rxb7 Nd8 19. Rb4 a5 20. Rb6 Qe7 21. g3 Qg5 22. Rf4 a4 23. Qe3 a3 24. Qe5 0-0 25. Rb8 Ra6 26. Rb1 Nc6 27. Qe3 a2 28. Ra1 Rb8 29. Ng2 Rb2 30. Bxc4 0-1

[Event "EU-ch U21 fin-A"]
[Site "Groningen"]
[Date "1973.12.27"]
[Round "2"]
[White "Kuligowski, Adam"]
[Black "Koopman, Hendrik"]
[Result "1-0"]
[ECO "A75"]
[PlyCount "69"]
[EventDate "1973.12.26"]
[EventType "tourn"]
[EventRounds "9"]
[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 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. e4 Bg7 8. Be2 0-0 9. 0-0 a6 10. a4 Bg4 11. Bf4 Qe7 12. Nd2 Bxe2 13. Qxe2 Re8 14. Rae1 Nh5 15. Be3 Nd7 16. f4 Bxc3 17. bxc3 Nhf6 18. Bf2 Nxd5 19. Qf3 Nc7 20. Qh3 Nf8 21. Bh4 Qd7 22. f5 d5 23. Bf6 Qc6 24. e5 Nd7 25. fxg6 fxg6 26. Qh6 Ne6 27. Nf3 Ndf8 28. Ng5 Qd7 29. Nxe6 Nxe6 30. Re3 b5 31. Rg3 Ng7 32. h4 Re6 33. h5 Rxf6 34. exf6 Nf5 35. Rxf5 1-0

[Event "EU-ch U21 fin-A"]
[Site "Groningen"]
[Date "1973.12.26"]
[Round "1"]
[White "Koopman, Hendrik"]
[Black "Goormachtigh, Johan"]
[Result "1/2-1/2"]
[ECO "B79"]
[PlyCount "80"]
[EventDate "1973.12.26"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 d6 7. Qd2 Nf6 8. f3 0-0 9. Bc4 Bd7 10. 0-0-0 Qa5 11. Bb3 Rfc8 12. Bf2 Ne5 13. Kb1 Nc4 14. Bxc4 Rxc4 15. Nb3 Qc7 16. Bd4 Be6 17. Rhe1 a5 18. a4 Rb4 19. Nc1 Rc8 20. N1a2 Bxa2+ 21. Kxa2 Qc4+ 22. Ka1 Nd5 23. exd5 Qxd4 24. Qxd4 Bxd4 25. Rxd4 Rxd4 26. Rxe7 Rd2 27. g4 Rxc3 28. bxc3 Rxc2 29. Rc7 Rxh2 30. Rxb7 Rf2 31. Rd7 Rxf3 32. Kb2 Rf4 33. Rxd6 Rxg4 34. Ra6 Kf8 35. d6 Ke8 36. Rxa5 Kd7 37. Ra7+ Kxd6 38. Rxf7 Rxa4 39. Rxh7 Ke5 40. Kb3 Ra1 1/2-1/2

[Event "EU-ch U21 prel"]
[Site "Groningen"]
[Date "1973.12.24"]
[Round "7"]
[White "Inkiov, Ventzislav"]
[Black "Koopman, Hendrik"]
[Result "1/2-1/2"]
[ECO "B22"]
[PlyCount "48"]
[EventDate "1973.12.17"]
[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. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Qxd4 e6 6. Bc4 Nc6 7. Qe4 d6 8. exd6 Nf6 9. Qe2 Bxd6 10. Bg5 0-0 11. Nd2 Be7 12. Ngf3 Qc7 13. 0-0 b6 14. Ne4 Ne8 15. Bxe7 Nxe7 16. Rad1 h6 17. Bb3 Bb7 18. Bc2 Nd5 19. Rd2 Nef6 20. Nxf6+ Nxf6 21. Rfd1 Rfd8 22. Ne5 Rxd2 23. Rxd2 Rd8 24. Qc4 Qb8 1/2-1/2

[Event "EU-ch U21 prel"]
[Site "Groningen"]
[Date "1973.12.23"]
[Round "6"]
[White "Koopman, Hendrik"]
[Black "Kuligowski, Adam"]
[Result "1/2-1/2"]
[ECO "C17"]
[PlyCount "10"]
[EventDate "1973.12.17"]
[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 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Ne7 1/2-1/2

[Event "EU-ch U21 prel"]
[Site "Groningen"]
[Date "1973.12.22"]
[Round "5"]
[White "Hellmayr, Alois"]
[Black "Koopman, Hendrik"]
[Result "0-1"]
[ECO "A04"]
[PlyCount "62"]
[EventDate "1973.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. 0-0 Bg7 5. e4 d6 6. d3 e6 7. Nbd2 Nge7 8. Re1 0-0 9. Nc4 e5 10. Nh4 h6 11. f4 exf4 12. gxf4 d5 13. Ne3 dxe4 14. dxe4 Qxd1 15. Rxd1 Nd4 16. Kf2 g5 17. fxg5 hxg5 18. Nf3 Nxf3 19. Bxf3 f5 20. exf5 Nxf5 21. Nxf5 Bxf5 22. Kg2 g4 23. Bxb7 Rae8 24. Rd2 Re1 25. Rf2 Bd4 26. Bd5+ Kh8 27. c3 Be4+ 28. Bxe4 Rxf2+ 29. Kg3 Rg1+ 30. Kh4 Rxh2+ 31. Kg5 Rxc1 0-1

[Event "EU-ch U21 prel"]
[Site "Groningen"]
[Date "1973.12.20"]
[Round "4"]
[White "Mack, Peter"]
[Black "Koopman, Hendrik"]
[Result "1/2-1/2"]
[ECO "A37"]
[PlyCount "40"]
[EventDate "1973.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. g3 c5 2. Bg2 Nc6 3. Nf3 e5 4. d3 g6 5. c4 Bg7 6. Nc3 Nge7 7. 0-0 d6 8. Bd2 h6 9. a3 0-0 10. Ne1 Be6 11. Nd5 f5 12. Rb1 Qd7 13. Nc2 f4 14. b4 fxg3 15. Nxe7+ Nxe7 16. hxg3 Bh3 17. Ne3 Bxg2 18. Kxg2 Rf7 19. f3 h5 20. Rh1 Bh6 1/2-1/2

[Event "EU-ch U21 prel"]
[Site "Groningen"]
[Date "1973.12.19"]
[Round "3"]
[White "Koopman, Hendrik"]
[Black "Makarichev, Sergey"]
[Result "1/2-1/2"]
[ECO "B57"]
[PlyCount "82"]
[EventDate "1973.12.17"]
[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 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Bd7 7. 0-0 g6 8. Nxc6 bxc6 9. f4 Ng4 10. Qe2 Bg7 11. a4 Qa5 12. Ra3 Qh5 13. h3 Bd4+ 14. Kh1 0-0 15. f5 Nf6 16. Qe1 g5 17. Qd2 Be5 18. Qxg5+ Qxg5 19. Bxg5 Bxc3 20. Rxc3 Nxe4 21. Bxe7 Rfe8 22. f6 Nxc3 23. bxc3 d5 24. Bd3 Rxe7 25. fxe7 Re8 26. Rb1 a5 27. Rb7 Rxe7 28. Kh2 Kf8 29. Ra7 c5 30. c4 dxc4 31. Bxc4 Bxa4 32. Rxa5 Bxc2 33. Rxc5 Be4 34. Rc8+ Kg7 35. Rd8 Rc7 36. Bd5 Bxd5 37. Rxd5 Rc3 38. h4 h6 39. Rd6 Rb3 40. g3 Ra3 41. Kh3 Ra4 1/2-1/2

[Event "EU-ch U21 prel"]
[Site "Groningen"]
[Date "1973.12.18"]
[Round "2"]
[White "Urzica, Aurel"]
[Black "Koopman, Hendrik"]
[Result "0-1"]
[ECO "B96"]
[PlyCount "64"]
[EventDate "1973.12.17"]
[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 e6 7. f4 Qb6 8. Nb3 h6 9. Bxf6 gxf6 10. Qf3 Nc6 11. 0-0-0 Bd7 12. g3 h5 13. Bh3 0-0-0 14. Kb1 Kb8 15. Rhe1 Be7 16. a3 Bf8 17. Re2 Qc7 18. Qf2 Bg7 19. Red2 Bc8 20. Na4 h4 21. gxh4 b5 22. Nb6 Bb7 23. Bg2 Bh6 24. c4 Rhg8 25. Bh3 Ne7 26. cxb5 Bxe4+ 27. Ka1 axb5 28. Qe3 f5 29. Nc1 Nc6 30. Ne2 Bg7 31. Nc3 Bxc3 32. bxc3 Kb7 0-1

[Event "EU-ch U21 prel"]
[Site "Groningen"]
[Date "1973.12.17"]
[Round "1"]
[White "Koopman, Hendrik"]
[Black "Smith, Richard"]
[Result "1-0"]
[ECO "B40"]
[PlyCount "63"]
[EventDate "1973.12.17"]
[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 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Bd3 d5 7. Qe2 Nf6 8. Nd2 Be7 9. 0-0 0-0 10. b3 a5 11. Bb2 Qb6 12. c4 a4 13. cxd5 cxd5 14. exd5 Nxd5 15. Qg4 Bf6 16. Qe4 Rd8 17. Nc4 Qb8 18. Qxh7+ Kf8 19. Ba3+ Ke8 20. Qg8+ Kd7 21. Qxf7+ Kc6 22. Rac1 Nc3 23. Rxc3 Bxc3 24. Be4+ Rd5 25. Ne3 Qe5 26. Qe8+ Kb7 27. Qb5+ Kc7 28. Qc4+ Kb8 29. Bxd5 exd5 30. Nxd5 Bd4 31. Qc6 Ka7 32. Bd6 1-0

[Event "Europe West Team U20-09"]
[Site "Doesburg "]
[Date "1973.??.??"]
[Round "?"]
[White "Hoi, Carsten"]
[Black "Koopman, Hendrik"]
[Result "0-1"]
[ECO "B06"]
[PlyCount "64"]
[EventDate "1973.06.14"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. f4 Nd7 5. Nf3 c6 6. Bd3 e5 7. fxe5 dxe5 8. d5 Ngf6 9. 0-0 0-0 10. Qe1 cxd5 11. exd5 Nc5 12. Bg5 Qb6 13. Kh1 e4 14. Bxf6 exf3 15. Bxg7 fxg2+ 16. Kxg2 Kxg7 17. Ne4 Nxe4 18. Qxe4 Qxb2 19. Rab1 Qc3 20. Qe7 b6 21. Rf4 Kg8 22. Rbf1 f5 23. d6 Qf6 24. Bc4+ Kh8 25. Rd1 Qxe7 26. dxe7 Re8 27. Re1 Bb7+ 28. Kg3 Be4 29. Rexe4 fxe4 30. Rf7 Rac8 31. Be6 Rc3+ 32. Kg4 Rf3 0-1

[Event "Europe West Team U20-09"]
[Site "Doesburg "]
[Date "1973.??.??"]
[Round "?"]
[White "Koopman, Hendrik"]
[Black "Van der Sterren, Paul"]
[Result "0-1"]
[ECO "D03"]
[PlyCount "68"]
[EventDate "1973.06.14"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. Bxf6 Bxf6 6. e4 c5 7. exd5 cxd4 8. Bc4 Qb6 9. 0-0 Bg4 10. Re1 0-0 11. Ne4 Bg7 12. h3 Bxf3 13. Qxf3 Nd7 14. Ng5 Ne5 15. Qb3 Nxc4 16. Qxc4 Rac8 17. Qb3 Qxb3 18. axb3 Rxc2 19. Rxa7 d3 20. Rd1 Bd4 21. Rxb7 Rxf2 22. Kh1 Rc8 23. Nf3 Be3 24. Rxe7 d2 25. Nxd2 Rxd2 26. Rf1 Rf2 27. Rd1 Rc1 28. Rxc1 Bxc1 29. d6 Bg5 30. Rd7 Rxb2 31. Rb7 Bf4 32. Kg1 Bxd6 33. Kf1 Kg7 34. Rb6 Bg3 0-1

[Event "Glorney Cup"]
[Site "Sidcup"]
[Date "1972.08.12"]
[Round "5.3"]
[White "Koopman, Hendrik"]
[Black "Lebrun, Bernard"]
[Result "1-0"]
[ECO "C86"]
[PlyCount "89"]
[EventDate "1972.08.08"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "ENG"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "France"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "FRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Be7 7. Qe2 d6 8. a4 Bg4 9. c3 0-0 10. h3 Bh5 11. Re1 Na5 12. Bc2 Qd7 13. d3 h6 14. Nbd2 Nh7 15. Nxe5 Qxh3 16. gxh3 Bxe2 17. Nd7 Rfd8 18. Rxe2 Rxd7 19. axb5 Nb7 20. bxa6 Nc5 21. b4 Rxa6 22. Ra5 Ng5 23. Kh2 Rd8 24. Nc4 Rda8 25. Rxa6 Nxa6 26. d4 Nb8 27. f4 Nf3+ 28. Kg3 Nh4 29. Na5 g5 30. f5 f6 31. Be3 c5 32. Bb3+ Kg7 33. Bd5 Ra6 34. Bb7 Ra7 35. dxc5 dxc5 36. Rd2 Kf8 37. Rd5 Na6 38. bxc5 Nc7 39. c6 Nxd5 40. Bxa7 Nc7 41. Nc4 Ke8 42. Bb6 Kd8 43. Kf2 Bf8 44. Ne3 Bd6 45. Ng4 1-0

[Event "Glorney Cup"]
[Site "Sidcup"]
[Date "1972.08.11"]
[Round "4.3"]
[White "Koopman, Hendrik"]
[Black "Bentley, David C"]
[Result "1-0"]
[ECO "B28"]
[PlyCount "51"]
[EventDate "1972.08.08"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "ENG"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Scotland"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "SCO"]

1. e4 c5 2. Nf3 a6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. Bc4 Nb6 7. Bb3 dxc3 8. Nxc3 e6 9. 0-0 d5 10. exd6 Bxd6 11. Qe2 Nc6 12. Be3 Nd7 13. Ng5 Nf6 14. Rfd1 Qc7 15. Rxd6 Qxd6 16. Nge4 Nxe4 17. Nxe4 Qe5 18. Bc5 f5 19. Nd6+ Kd7 20. Qc2 b6 21. Rd1 Qxc5 22. Ne4+ Qd4 23. Rxd4+ Nxd4 24. Qd3 fxe4 25. Qxd4+ Ke7 26. Qxg7+ 1-0

[Event "Glorney Cup"]
[Site "Sidcup"]
[Date "1972.08.10"]
[Round "3.3"]
[White "Williams, Kevin"]
[Black "Koopman, Hendrik"]
[Result "0-1"]
[ECO "B32"]
[PlyCount "74"]
[EventDate "1972.08.08"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "ENG"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]
[WhiteTeam "Wales"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "WLS"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 a6 6. Nd6+ Bxd6 7. Qxd6 Qf6 8. Qd1 Nge7 9. Nc3 Qg6 10. Be3 d5 11. exd5 Nb4 12. Bd3 Bf5 13. 0-0 Nxd3 14. cxd3 0-0 15. d4 Bg4 16. f3 Bh3 17. Qd2 Rfd8 18. Kh1 exd4 19. Bxd4 Bf5 20. Bc5 Nc8 21. Rfe1 h5 22. Qf4 Nd6 23. Re7 Nb5 24. Nxb5 axb5 25. d6 Bd7 26. a3 Bc6 27. Rae1 Rac8 28. Qe5 Kh7 29. Qc3 Qf5 30. b4 b6 31. Bxb6 Rxd6 32. Bc5 Rd3 33. Qe5 Rxf3 34. Qxf5+ Rxf5 35. R7e3 Rd8 36. Kg1 Rd2 37. Rc3 Rxg2+ 0-1

[Event "Glorney Cup"]
[Site "Sidcup"]
[Date "1972.08.09"]
[Round "2.6"]
[White "Chapman, Terry PD"]
[Black "Koopman, Hendrik"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "107"]
[EventDate "1972.08.08"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "ENG"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]
[WhiteTeam "England"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "ENG"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 Nc6 3. d3 e6 4. g3 d5 5. Nbd2 Nf6 6. Bg2 Be7 7. 0-0 0-0 8. Re1 Qc7 9. Qe2 b5 10. e5 Nd7 11. Nf1 a5 12. h4 b4 13. h5 Ba6 14. h6 g6 15. N1h2 c4 16. Ng4 b3 17. dxc4 Bxc4 18. Qd2 a4 19. axb3 axb3 20. Rxa8 Rxa8 21. cxb3 Bxb3 22. Qe3 Bc2 23. Bd2 Ra4 24. Rc1 Re4 25. Rxc2 Rxe3 26. Bxe3 Qb7 27. Bf1 f5 28. exf6 Nxf6 29. Nge5 Nxe5 30. Nxe5 Bd6 31. Bd4 Nd7 32. Nxd7 Qxd7 33. Bh3 Qe8 34. f4 Qa4 35. Bxe6+ Kf8 36. Rd2 Qb4 37. Bg7+ Ke7 38. Re2 Kd8 39. Bg8 d4 40. Bf6+ Kc7 41. Rc2+ Kb8 42. Bc4 Qe1+ 43. Kh2 Qd1 44. Rf2 Qc1 45. Bg8 Qe3 46. Kg2 Bb4 47. Be5+ Ka7 48. Bxh7 Be1 49. Bxd4+ Qxd4 50. Re2 Qd5+ 51. Kg1 Bxg3 52. Bxg6 Qd1+ 53. Kg2 Qxe2+ 54. Kxg3 0-1

[Event "Glorney Cup"]
[Site "Sidcup"]
[Date "1972.08.08"]
[Round "1.5"]
[White "Nicholson, John"]
[Black "Koopman, Hendrik"]
[Result "0-1"]
[ECO "B29"]
[PlyCount "118"]
[EventDate "1972.08.08"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "ENG"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]
[WhiteTeam "Ireland"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "IRL"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nc3 e6 3. Nf3 Nf6 4. e5 Nd5 5. Be2 Nc6 6. 0-0 d6 7. exd6 Bxd6 8. Ne4 Be7 9. d4 cxd4 10. Nxd4 Nxd4 11. Qxd4 0-0 12. c3 Bd7 13. Rd1 Bc6 14. Ng3 Qb6 15. Nh5 Qxd4 16. Rxd4 e5 17. Rg4 g6 18. Bh6 Rfd8 19. Bc4 Rd6 20. f4 Ne3 21. fxe5 Nxg4 22. exd6 Nxh6 23. dxe7 gxh5 24. Rd1 Re8 25. Rd6 Kg7 26. Bd5 Bxd5 27. Rxd5 Rxe7 28. Rxh5 Re2 29. Rb5 b6 30. h3 Kf6 31. a4 Nf5 32. g4 Nd6 33. Rd5 Ke6 34. Rh5 Rxb2 35. Rxh7 Ke5 36. Rh6 Rd2 37. Kf1 Kf4 38. Ke1 Ke3 39. Rf6 Rd5 40. h4 Ke4 41. h5 Ke5 42. Rf3 f6 43. h6 Nf7 44. Re3+ Kf4 45. Rh3 Kxg4 46. Rh2 Rh5 47. Rg2+ Kf4 48. Rg7 Nxh6 49. Rxa7 Ke3 50. Re7+ Re5 51. Rh7 Ng4 52. Rh3+ Kf4+ 53. Kd2 Ra5 54. Rd3 Rxa4 55. Rd6 Ra2+ 56. Kc1 b5 57. Rd5 Ne3 58. Rxb5 Rc2+ 59. Kb1 Rxc3 0-1

