[Event "Glorney Cup"]
[Site "Paisley"]
[Date "2018.07.18"]
[Round "5.3"]
[White "Kouwenhoven, Derk"]
[Black "Zelenchuk, Daniil"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "1994"]
[BlackElo "1700"]
[PlyCount "82"]
[EventDate "2018.07.16"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "SCO"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]
[WhiteTeam "Netherlands U18"]
[BlackTeam "Ireland U18"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "IRL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. g4 Bd7 10. h4 h5 11. g5 Ne8 12. 0-0-0 Nc7 13. f4 Rc8 14. Be2 Ne6 15. Nxe6 Bxe6 16. Nd5 Kh7 17. Kb1 Na5 18. Bd4 Nc4 19. Bxc4 Rxc4 20. Bxg7 Kxg7 21. Rde1 Re8 22. b3 Rc5 23. Re3 Qc8 24. Rf1 Bxd5 25. exd5 Qf5 26. Qd4+ Kg8 27. Rd3 Rec8 28. Rf2 R8c7 29. Rdd2 b5 30. Qd3 Rxc2 31. Qxf5 Rc1+ 32. Kb2 gxf5 33. a3 Rh1 34. Rc2 Rxc2+ 35. Kxc2 Rxh4 36. Kc3 a5 37. Rf3 Rh1 38. a4 bxa4 39. bxa4 h4 40. Kc4 h3 41. Kb5 Rb1+ 0-1

[Event "Glorney Cup"]
[Site "Paisley"]
[Date "2018.07.17"]
[Round "4.13"]
[White "Evans, James"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1559"]
[BlackElo "1994"]
[PlyCount "76"]
[EventDate "2018.07.16"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "SCO"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]
[WhiteTeam "Wales"]
[BlackTeam "Netherlands U18"]
[WhiteTeamCountry "WLS"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 Nc6 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qh5 9. Nxe4 Be6 10. Bg5 h6 11. Bh4 Bb4 12. Re2 0-0 13. Bg3 Ba5 14. a3 Bb6 15. b4 Bg4 16. Ned2 Rfe8 17. h3 Be6 18. Re1 a6 19. Ne4 Bd5 20. Qd3 Qg6 21. Nfd2 Ne5 22. Bxe5 Rxe5 23. Re2 f5 24. Ng3 Rxe2 25. Qxe2 Qxg3 26. fxg3 d3+ 27. Qf2 dxc2 28. Rc1 Re8 29. Qxb6 cxb6 30. Rxc2 Re3 31. Kf2 Rxa3 32. Rb2 Kf7 33. Nf3 Kf6 34. Rd2 Ra2 35. Rxa2 Bxa2 36. Ke3 Bd5 37. Ne1 Bc6 38. Kf4 a5 0-1

[Event "Glorney Cup"]
[Site "Paisley"]
[Date "2018.07.17"]
[Round "3.8"]
[White "Kouwenhoven, Derk"]
[Black "Weisman, Nathan"]
[Result "1-0"]
[ECO "B64"]
[WhiteElo "1994"]
[BlackElo "2003"]
[PlyCount "81"]
[EventDate "2018.07.16"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "SCO"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]
[WhiteTeam "Netherlands U18"]
[BlackTeam "France U18"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "FRA"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Be7 7. Qd2 h6 8. Bh4 Nc6 9. 0-0-0 0-0 10. f4 e5 11. Ndb5 exf4 12. Nxd6 Ne5 13. Be2 Be6 14. Kb1 Qb6 15. Qd4 Qxd4 16. Rxd4 Rfd8 17. Rhd1 Rab8 18. Bxf6 Bxf6 19. Nd5 Bxd5 20. Rxd5 a6 21. a4 g5 22. Nf5 Kh7 23. h3 Kg6 24. Rd6 b5 25. Ne7+ Kg7 26. Rxd8 Rxd8 27. Rxd8 Bxe7 28. Rd5 f6 29. axb5 axb5 30. Rxb5 Kg6 31. c3 h5 32. Rxe5 fxe5 33. b4 Kf7 34. Bxh5+ Ke6 35. Kc2 Kd6 36. Be8 Bd8 37. c4 Be7 38. c5+ Kc7 39. Kc3 Kd8 40. Ba4 Kc7 41. Kc4 1-0

[Event "Glorney Cup"]
[Site "Paisley"]
[Date "2018.07.16"]
[Round "2.8"]
[White "Harman, George"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C86"]
[WhiteElo "1515"]
[BlackElo "1994"]
[PlyCount "80"]
[EventDate "2018.07.16"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "SCO"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]
[WhiteTeam "England U18"]
[BlackTeam "Netherlands U18"]
[WhiteTeamCountry "ENG"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 Be7 6. 0-0 b5 7. Bb3 0-0 8. c3 d6 9. Rd1 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Qxc2 14. Re1 Bg4 15. h3 Bxf3 16. Nxf3 Qxe2 17. Rxe2 Nd7 18. Be3 Nc4 19. Rd1 Nxe3 20. Rxe3 Rac8 21. Re2 Rc4 22. Red2 Rfc8 23. dxe5 Nxe5 24. Nxe5 dxe5 25. f3 Bc5+ 26. Kh2 Bd4 27. b3 Rc1 28. Rxc1 Rxc1 29. Kg3 g6 30. Kg4 h5+ 31. Kg3 Kg7 32. Re2 a5 33. Kh4 Rc3 34. Rd2 a4 35. bxa4 bxa4 36. Re2 a3 37. Rd2 Rc1 38. Kg3 Be3 39. Rd3 Bf4+ 40. Kh4 Kh6 0-1

[Event "Glorney Cup"]
[Site "Paisley"]
[Date "2018.07.16"]
[Round "1.13"]
[White "Kouwenhoven, Derk"]
[Black "Volland, Ben"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1994"]
[BlackElo "1887"]
[PlyCount "82"]
[EventDate "2018.07.16"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "SCO"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]
[WhiteTeam "Netherlands U18"]
[BlackTeam "Scotland U18"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "SCO"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 d6 6. Bb3 Bg4 7. h3 Bh5 8. Nbd2 Qd7 9. Nf1 h6 10. Ng3 Bg6 11. 0-0 0-0-0 12. Re1 Nh5 13. d4 Nxg3 14. fxg3 exd4 15. cxd4 f5 16. exf5 Bxf5 17. g4 d5 18. gxf5 Qxf5 19. Be3 Rhf8 20. Bc2 Qf6 21. Rf1 Qe6 22. Qe2 Rde8 23. Qf2 Bb4 24. Bd2 Qe2 25. Qxe2 Rxe2 26. Bxb4 Nxb4 27. Ne5 Rxf1+ 28. Rxf1 Rxe5 29. Rf8+ Kd7 30. Ba4+ b5 31. Bxb5+ c6 32. Bxc6+ Nxc6 33. dxe5 Nxe5 34. Ra8 Nc6 35. Rg8 g5 36. Rg6 d4 37. Rxh6 d3 38. Kf2 Ne5 39. Ke3 a5 40. Ra6 Kc7 41. Rxa5 Kb6 1-0

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2018.05.05"]
[Round "7"]
[White "Bruggink, Tycho"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C89"]
[WhiteElo "1899"]
[BlackElo "2091"]
[PlyCount "136"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d3 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Re4 Qf5 16. Nd2 Bd7 17. Nf1 Rae8 18. Rxe8 Rxe8 19. Ne3 Nxe3 20. Bxe3 c5 21. d4 c4 22. Bc2 Qd5 23. Qe2 f5 24. f3 f4 25. Be4 Qg5 26. Bd2 Kh8 27. Qg2 Qf6 28. g4 g5 29. Qh3 h6 30. Re1 Kg7 31. Qg2 Rh8 32. Re2 h5 33. h3 hxg4 34. hxg4 Kf8 35. Kf1 Rh4 36. Ke1 a5 37. Kd1 b4 38. Kc2 Be7 39. Bd5 Qa6 40. Qf1 Bd6 41. Bxc4 Qc6 42. b3 Rh8 43. d5 Qc5 44. Qf2 Qxf2 45. Rxf2 Rh3 46. Bf1 Rg3 47. Bg2 bxc3 48. Be1 Be8 49. Re2 Bg6+ 50. Kxc3 Bb4+ 51. Kd4 Bxe1 52. Rxe1 Rxg2 53. Re5 Rf2 54. Rxg5 Bb1 55. Ke5 Rxf3 56. d6 Bxa2 57. Rf5+ Ke8 58. Rxf4 Rxb3 59. Ra4 Rb5+ 60. Kf6 Bb3 61. Re4+ Kd7 62. Re5 Bd5 63. g5 a4 64. g6 a3 65. g7 a2 66. Re7+ Kxd6 67. Ra7 Rb1 68. Ra6+ Kc7 0-1

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2018.05.04"]
[Round "6"]
[White "Honkoop, Gilian"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1889"]
[BlackElo "2091"]
[PlyCount "105"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 c5 3. d5 d6 4. Nc3 a6 5. a4 e5 6. Bg3 Qa5 7. e3 Nbd7 8. f3 g6 9. e4 Bh6 10. Bd3 Qb4 11. a5 c4 12. Bf1 Qxb2 13. Nge2 Nc5 14. Ra2 Qb4 15. Qa1 Nfxe4 16. fxe4 Nxe4 17. Ra3 Bg4 18. Kd1 Nf6 19. Bf2 Nxd5 20. Ne4 Ke7 21. h3 Bxe2+ 22. Bxe2 Rac8 23. g4 f5 24. c3 Qb5 25. Bh4+ Kd7 26. gxf5 Ne3+ 27. Kc1 gxf5 28. Bg5 Bxg5 29. Nxg5 Rhg8 30. Nxh7 Rg6 31. Kd2 Nd5 32. h4 Rh8 33. Ng5 Rxg5 34. hxg5 Rxh1 35. Qxh1 Qb2+ 36. Ke1 Qc1+ 37. Bd1 Qxa3 38. Qxd5 Qxc3+ 39. Ke2 Qb2+ 40. Kf1 Qc1 41. g6 Qf4+ 42. Qf3 Qxf3+ 43. Bxf3 c3 44. Ke2 Ke7 45. Bxb7 e4 46. Bxa6 f4 47. g7 f3+ 48. Kd1 Kf7 49. Bc4+ Kxg7 50. a6 d5 51. a7 dxc4 52. a8Q f2 53. Qa7+ 1-0

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2018.05.03"]
[Round "5"]
[White "Kouwenhoven, Derk"]
[Black "De Boer, Eelke"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "2091"]
[BlackElo "2318"]
[PlyCount "48"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Qe2 h6 8. Bh4 g6 9. f4 e5 10. fxe5 dxe5 11. 0-0-0 Qc7 12. Nb3 b5 13. Qf3 Bg7 14. a3 Bb7 15. Kb1 0-0 16. g4 Rac8 17. Be2 Nxe4 18. Nd5 Qxc2+ 19. Ka1 Bxd5 20. Rxd5 Nec5 21. Nxc5 Nxc5 22. Bd1 Qc1+ 23. Ka2 e4 24. Qg2 Qc4+ 0-1

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2018.05.02"]
[Round "4"]
[White "Kouwenhoven, Derk"]
[Black "Wedda, Dries"]
[Result "1-0"]
[ECO "B94"]
[WhiteElo "2091"]
[BlackElo "2096"]
[PlyCount "79"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Qe2 h6 8. Bh4 g6 9. f4 e5 10. Nf3 Qc7 11. 0-0-0 Be7 12. g3 0-0 13. Bh3 Nb6 14. Bxc8 Raxc8 15. Rhf1 Kg7 16. Kb1 Rfd8 17. Qf2 Qc5 18. Rd3 Rd7 19. Qxc5 Rxc5 20. Rfd1 Rdc7 21. Bxf6+ Bxf6 22. Rxd6 Nc4 23. Rxf6 Kxf6 24. Nd5+ Rxd5 25. Rxd5 exf4 26. gxf4 Re7 27. b3 Na3+ 28. Kb2 Nb5 29. c4 Nc7 30. Rd6+ Kg7 31. Nd2 f5 32. exf5 gxf5 33. Nf3 Ne6 34. Nh4 Kf6 35. Kc3 Rf7 36. Rb6 Rg7 37. Nf3 Ke7 38. Rxb7+ Kd6 39. Rxg7 Nxg7 40. Nd4 1-0

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2018.05.01"]
[Round "3"]
[White "Grutter, Tim"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1974"]
[BlackElo "2091"]
[PlyCount "104"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Nbd2 a6 7. Bb3 Ba7 8. 0-0 0-0 9. h3 Be6 10. Re1 Ne7 11. Nf1 Ng6 12. Ng3 c6 13. Bc2 Qc7 14. d4 h6 15. Nf5 Rfe8 16. g4 d5 17. exd5 Bxd5 18. g5 hxg5 19. Bxg5 Nh7 20. Be3 e4 21. Nh2 Bb8 22. Nf1 Qd7 23. Qh5 Be6 24. N1g3 Bxg3 25. Nxg3 Nf6 26. Qe2 Bxh3 27. Bg5 Bg4 28. Qc4 b5 29. Qf1 Bh3 30. Qe2 Nh7 31. Qd2 Qg4 32. Qe2 Nxg5 33. Qxg4 Bxg4 34. Bxe4 Nxe4 35. Rxe4 Rxe4 36. Nxe4 Re8 37. Nc5 Re2 38. Nxa6 Rxb2 39. Nb4 Bf3 40. a4 bxa4 41. Rxa4 Nf4 42. Kh2 Ne2 43. Ra1 Nxc3 44. Nd3 Rd2 45. Ne5 Bd5 46. Ra3 Rxf2+ 47. Kg1 Rc2 48. Kf1 f6 49. Ng4 Nb5 50. Ra8+ Kf7 51. Ne3 Rc1+ 52. Kf2 Nxd4 0-1

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2018.04.30"]
[Round "2"]
[White "Kouwenhoven, Derk"]
[Black "Tang, Charlie1111"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "2091"]
[BlackElo "2127"]
[PlyCount "80"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Bc4 Nc6 9. Bb3 Bd7 10. Qd2 Rc8 11. h4 h5 12. 0-0-0 Ne5 13. Qe2 Qa5 14. Nd5 Nxd5 15. exd5 Ba4 16. Qd2 Qa6 17. Kb1 Bxb3 18. axb3 Rc5 19. c4 Rfc8 20. Nb5 Rxc4 21. bxc4 Nxc4 22. Qb4 Nxe3 23. Rc1 Rxc1+ 24. Rxc1 Qb6 25. Rc8+ Kh7 26. Qa4 a6 27. Nc3 Nxd5 28. Ka2 Qf2 29. Kb3 Nb6 30. Qe8 Nxc8 31. Qxc8 Qb6+ 32. Ka2 Qa5+ 33. Kb3 Bxc3 34. bxc3 Qd5+ 35. c4 Qd3+ 36. Kb4 Kg7 37. Qc7 e6 38. Qe7 b5 39. c5 dxc5+ 40. Qxc5 Qc4+ 0-1

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2018.04.29"]
[Round "1"]
[White "Cchung, Chi Yun"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C95"]
[WhiteElo "1783"]
[BlackElo "2091"]
[PlyCount "126"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 c5 12. Nf1 Bb7 13. Ng3 Re8 14. Bc2 Bf8 15. b3 g6 16. Bb2 Qc7 17. Bd3 c4 18. Bc2 d5 19. exd5 Nxd5 20. bxc4 bxc4 21. Ba4 N5b6 22. Nxe5 Nxa4 23. Qxa4 Nxe5 24. Rxe5 Rxe5 25. dxe5 Bg7 26. Nf1 Bxg2 27. Kxg2 Qb7+ 28. Kg1 Qxb2 29. Rd1 Qxc3 30. Qc6 Rf8 31. Ne3 Bxe5 32. Qxa6 Bb8 33. Qxc4 Qe5 34. Ng4 Qg7 35. Qd4 Qxd4 36. Rxd4 f5 37. Ne3 Re8 38. a4 Ba7 39. Rd3 Kf8 40. Kg2 Re4 41. Rd8+ Ke7 42. Rh8 Bxe3 43. Rxh7+ Kf6 44. fxe3 Rxe3 45. a5 Ra3 46. Ra7 g5 47. a6 Ke5 48. Ra8 Kf4 49. a7 Ra2+ 50. Kf1 Kf3 51. Ke1 f4 52. Rg8 Ra1+ 53. Kd2 Rxa7 54. Rxg5 Rh7 55. Kd1 Rxh3 56. Rg8 Kf2 57. Kd2 f3 58. Rg7 Rh8 59. Kd3 Rd8+ 60. Ke4 Ke2 61. Rg3 Re8+ 62. Kf4 f2 63. Rg2 Ke1 0-1

[Event "Hoogeveen op 21st"]
[Site "Hoogeveen"]
[Date "2017.10.28"]
[Round "9"]
[White "Kouwenhoven, Derk"]
[Black "De Jong, Migchiel"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2028"]
[BlackElo "2352"]
[PlyCount "101"]
[EventDate "2017.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. f4 Qa5 5. Bd3 e5 6. Nf3 Nbd7 7. Be3 Be7 8. 0-0 Ng4 9. Bd2 Qb6 10. Na4 Qc7 11. h3 Ngf6 12. Qe1 b5 13. Nc3 0-0 14. Ne2 d5 15. fxe5 dxe4 16. exf6 Nxf6 17. Nf4 exd3 18. Nxd3 Nd5 19. Ng5 h6 20. Ne4 Re8 21. Ba5 Nb6 22. Qf2 Be6 23. Ndc5 Bc4 24. Rfe1 Qc8 25. b3 Bd5 26. Bd2 Nd7 27. Qg3 Nxc5 28. Nxc5 Bf6 29. c3 b4 30. Rxe8+ Qxe8 31. Re1 Qd8 32. Qg4 bxc3 33. Bxc3 Bg5 34. g3 Qc7 35. Kh2 f5 36. Qxf5 Rf8 37. Ne6 Rxf5 38. Nxc7 Rf2+ 39. Kg1 Rg2+ 40. Kf1 Rxg3 41. Nxd5 cxd5 42. Bb4 Bf6 43. Bc5 Rxh3 44. Re8+ Kh7 45. Bxa7 Rh1+ 46. Kg2 Rb1 47. Re2 h5 48. Bc5 h4 49. b4 g5 50. a4 Bxd4 51. Bxd4 1/2-1/2

[Event "Hoogeveen op 21st"]
[Site "Hoogeveen"]
[Date "2017.10.27"]
[Round "8"]
[White "Kouwenhoven, Derk"]
[Black "Vroombout, Enrico"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2028"]
[BlackElo "2133"]
[PlyCount "126"]
[EventDate "2017.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Be3 d6 4. Nc3 a6 5. h4 Nf6 6. f3 Nbd7 7. Qd2 b5 8. 0-0-0 Bb7 9. Nh3 h6 10. g4 Nb6 11. Be2 Nfd7 12. Nf2 b4 13. Nb1 a5 14. f4 Rc8 15. h5 c5 16. d5 Na4 17. c3 Qb6 18. Qc2 bxc3 19. bxc3 Rb8 20. Bc4 Nb2 21. Qxb2 Qxb2+ 22. Kxb2 Ba6+ 23. Bb3 a4 24. Ka3 axb3 25. axb3 0-0 26. Rc1 Ra8 27. Kb2 Rfb8 28. Nd2 c4 29. Ra1 cxb3 30. Ra3 Nc5 31. Bxc5 dxc5 32. Rha1 Bb7 33. Rxa8 Bxa8 34. Ra3 gxh5 35. gxh5 f5 36. Rxb3 Rd8 37. Rb5 fxe4 38. Ndxe4 c4 39. Nd2 Rxd5 40. Rb8+ Kh7 41. Nxc4 Rxh5 42. Nd3 Be4 43. Nce5 Rh3 44. Rd8 h5 45. Kb3 Rg3 46. Kb4 h4 47. Nf2 Bg2 48. c4 h3 49. Rd1 Bxe5 50. fxe5 Re3 51. Rd4 Rxe5 52. Rh4+ Kg6 53. Nxh3 Bxh3 54. Rxh3 Re1 55. c5 Rb1+ 56. Kc4 Kf5 57. Re3 e5 58. c6 Rc1+ 59. Kd5 Rd1+ 60. Kc5 Rc1+ 61. Kd6 Kf4 62. Rxe5 Rxc6+ 63. Kxc6 Kxe5 1/2-1/2

[Event "Hoogeveen op 21st"]
[Site "Hoogeveen"]
[Date "2017.10.26"]
[Round "7"]
[White "Stanetzek, Carsten"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2211"]
[BlackElo "2028"]
[PlyCount "48"]
[EventDate "2017.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 d6 5. c3 Nf6 6. d4 Bb6 7. Bb5 Bd7 8. Re1 0-0 9. Bg5 h6 10. Bh4 exd4 11. Nxd4 g5 12. Bg3 Re8 13. Nxc6 Bxc6 14. Bxc6 bxc6 15. Nd2 Re6 16. h4 Qe7 17. hxg5 hxg5 18. Qf3 Re8 19. Qf5 Nh5 20. Bh2 Ng7 21. Qh3 f5 22. e5 dxe5 23. Rad1 e4 24. Nc4 g4 0-1

[Event "Hoogeveen op 21st"]
[Site "Hoogeveen"]
[Date "2017.10.25"]
[Round "6"]
[White "Kouwenhoven, Derk"]
[Black "Weihrauch, Jakob"]
[Result "0-1"]
[ECO "C06"]
[WhiteElo "2028"]
[BlackElo "1901"]
[PlyCount "74"]
[EventDate "2017.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ngf3 Be7 8. 0-0 g5 9. dxc5 g4 10. Nd4 Ncxe5 11. Bb5 Bxc5 12. Re1 Bd6 13. c4 Qb6 14. Nf1 dxc4 15. Bf4 Nd3 16. Bxd6 Qxd4 17. Ne3 Qxb2 18. Bxd7+ Bxd7 19. Re2 Qd4 20. Nf5 Qd5 21. Be5 Bc6 22. Nd6+ Kd7 23. Re4 Nxe5 24. Nxc4 Nxc4 25. Rd4 Nd6 26. Rxd5 Bxd5 27. Qa4+ Bc6 28. Qd4 Rhg8 29. a4 Rg5 30. Qf4 Rag8 31. a5 a6 32. Rd1 Rd5 33. Ra1 Rgg5 34. Qb4 Rb5 35. Qc3 Rgf5 36. Qd2 Ke7 37. Qc3 Rxf2 0-1

[Event "Hoogeveen op 21st"]
[Site "Hoogeveen"]
[Date "2017.10.24"]
[Round "5"]
[White "De Boer, Bas"]
[Black "Kouwenhoven, Derk"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2120"]
[BlackElo "2028"]
[PlyCount "62"]
[EventDate "2017.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. Nc3 Nd7 5. Bc4 Nb6 6. Bb3 Nf6 7. 0-0 0-0 8. a4 c6 9. a5 Nbd7 10. e5 dxe5 11. dxe5 Nd5 12. Nxd5 cxd5 13. Re1 e6 14. Bg5 Qc7 15. Be7 Nxe5 16. Bxf8 Nxf3+ 17. Qxf3 Kxf8 18. c3 b6 19. Qg3 Qxg3 20. hxg3 bxa5 21. Rxa5 Rb8 22. Rxa7 Rxb3 23. Ra8 Rxb2 24. Rxc8+ Ke7 25. Re3 Rb7 26. g4 h6 27. Kf1 Bf6 28. Re2 Kd7 29. Rc5 Kd6 30. Rc8 Kd7 31. Rc5 Kd6 1/2-1/2

[Event "Hoogeveen op 21st"]
[Site "Hoogeveen"]
[Date "2017.10.23"]
[Round "4"]
[White "Jonkman, Harmen"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2410"]
[BlackElo "2028"]
[PlyCount "81"]
[EventDate "2017.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. 0-0 d6 6. a4 a6 7. c3 Ba7 8. h3 Ne7 9. Re1 Ng6 10. d4 Qe7 11. Be3 0-0 12. Nbd2 Be6 13. Qb3 Bxc4 14. Nxc4 c5 15. dxe5 dxe5 16. Bg5 Rab8 17. a5 Qe6 18. Rad1 Ne8 19. Qa4 f6 20. Bc1 Rf7 21. Rd3 Ne7 22. Nh2 Nc6 23. Ng4 Nb4 24. Rg3 Kh8 25. Nge3 Nc6 26. Rd1 g6 27. Nb6 Bxb6 28. axb6 f5 29. Qc4 Qxc4 30. Nxc4 f4 31. Rgd3 Nf6 32. f3 Re7 33. b3 Rc8 34. Ba3 Nb8 35. Rd8+ Re8 36. Rxc8 Rxc8 37. Nxe5 Kg7 38. Rd6 a5 39. c4 Na6 40. Bb2 Ne8 41. Rd7+ 1-0

[Event "Hoogeveen op 21st"]
[Site "Hoogeveen"]
[Date "2017.10.23"]
[Round "3"]
[White "Kouwenhoven, Derk"]
[Black "French, Max"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2028"]
[BlackElo "1991"]
[PlyCount "121"]
[EventDate "2017.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 Nc6 5. Nf3 Bg4 6. Bb5 Qa5+ 7. Nc3 e6 8. Be3 Nge7 9. a3 Nf5 10. b4 Qc7 11. Bd4 Be7 12. h3 Bxf3 13. gxf3 Nfxd4 14. Qxd4 f6 15. Bxc6+ Qxc6 16. f4 Rc8 17. Ne2 b6 18. cxb6 axb6 19. c3 Qb5 20. a4 Qc4 21. Qxc4 Rxc4 22. a5 bxa5 23. bxa5 Kf7 24. Kd2 Bc5 25. f3 Rc8 26. Rhb1 Ba7 27. Rb7+ R8c7 28. a6 Ke7 29. Nd4 Bxd4 30. Rxc7+ Rxc7 31. cxd4 Ra7 32. Kc3 fxe5 33. fxe5 Kd7 34. Kb4 Kc7 35. Kb5 Kb8 36. Kb6 Rf7 37. a7+ Ka8 38. Ra3 g6 39. Kc6 Rb7 40. h4 Rb4 41. Kd7 Rb6 42. f4 h6 43. h5 g5 44. fxg5 hxg5 45. h6 g4 46. h7 Rb7+ 47. Kxe6 Rxh7 48. Rg3 Kxa7 49. Rxg4 Kb6 50. Kxd5 Kc7 51. Ke4 Kd7 52. d5 Ke7 53. d6+ Kd7 54. Kd5 Rh5 55. Rg7+ Ke8 56. d7+ Kd8 57. Kd6 Rg5 58. Rf7 Rg6+ 59. e6 Rf6 60. Rf8+ Rxf8 61. e7# 1-0

[Event "Hoogeveen op 21st"]
[Site "Hoogeveen"]
[Date "2017.10.22"]
[Round "2"]
[White "Heemskerk, Wim"]
[Black "Kouwenhoven, Derk"]
[Result "1/2-1/2"]
[ECO "A42"]
[WhiteElo "2179"]
[BlackElo "2028"]
[PlyCount "81"]
[EventDate "2017.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. g3 d6 4. Bg2 Nd7 5. d4 e5 6. Nc3 Ne7 7. e4 0-0 8. 0-0 exd4 9. Nxd4 Nc6 10. Nde2 a5 11. h3 Nc5 12. Be3 Be6 13. b3 a4 14. Rb1 axb3 15. axb3 f5 16. Kh2 Qe7 17. Nd5 Bxd5 18. exd5 Nb4 19. Nf4 Ra2 20. Bd4 Bxd4 21. Qxd4 Qe5 22. Qd1 Ne4 23. Ra1 Rfa8 24. Rxa2 Rxa2 25. Kg1 Nc3 26. Qe1 Ne2+ 27. Nxe2 Nd3 28. Qc3 Qxe2 29. Qf6 Nxf2 30. Qe6+ Qxe6 31. dxe6 Nd3 32. Bxb7 Kf8 33. g4 Ke7 34. gxf5 gxf5 35. Rxf5 Kxe6 36. Rh5 Rb2 37. Bd5+ Kf6 38. Rxh7 Rxb3 39. Rxc7 Nf4 40. Rf7+ Ke5 41. Re7+ 1/2-1/2

[Event "Hoogeveen op 21st"]
[Site "Hoogeveen"]
[Date "2017.10.21"]
[Round "1"]
[White "Kouwenhoven, Derk"]
[Black "Maris, Ivo"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2028"]
[BlackElo "2340"]
[PlyCount "146"]
[EventDate "2017.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. a3 Nf6 8. Be2 Be7 9. 0-0 d6 10. f4 0-0 11. Qe1 Nxd4 12. Bxd4 e5 13. Be3 exf4 14. Rxf4 Be6 15. Rd1 Nd7 16. Bd4 Bf6 17. Bxf6 Nxf6 18. Qf2 Rad8 19. Kh1 Qc5 20. Qd4 Rfe8 21. Rff1 Qe5 22. Bf3 Kf8 23. Rd2 Rd7 24. Rfd1 Ke7 25. Kg1 Rc8 26. Be2 Rc5 27. g3 Qg5 28. Kf2 Qh6 29. h4 Re5 30. Bf3 g5 31. Rh1 Qg6 32. Nd5+ Bxd5 33. exd5 g4 34. Bg2 Ne4+ 35. Bxe4 Rxe4 36. Qxe4+ Qxe4 37. Re2 Qxe2+ 38. Kxe2 Kf6 39. Kd3 b5 40. Kd4 Re7 41. Rf1+ Kg6 42. a4 bxa4 43. Ra1 f5 44. c4 f4 45. c5 dxc5+ 46. Kxc5 fxg3 47. d6 Re2 48. d7 Rd2 49. Rxa4 Kf5 50. Rd4 Rxd4 51. Kxd4 g2 52. d8Q g1Q+ 53. Kc4 Qc1+ 54. Kb3 Qe3+ 55. Ka2 Qe6+ 56. b3 h6 57. Qa5+ Kf4 58. Qc7+ Kf3 59. Qc3+ Kg2 60. Kb2 g3 61. Kc2 Qg6+ 62. Kd2 Kh2 63. Qe5 Kh3 64. h5 Qg4 65. Qe3 Qxh5 66. Qe6+ Kh2 67. Qxa6 Qg5+ 68. Ke2 g2 69. Qd6+ Kh3 70. Qd7+ Qg4+ 71. Qxg4+ Kxg4 72. Kf2 Kh3 73. Kg1 Kg3 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2017.07.25"]
[Round "1"]
[White "Kouwenhoven, Derk"]
[Black "Van Foreest, Lucas"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2150"]
[BlackElo "2473"]
[PlyCount "70"]
[EventDate "2017.07.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 0-0 6. Bg5 h6 7. Bh4 Be7 8. Nbd2 d6 9. Bb3 Nh5 10. Bg3 g6 11. Nf1 Bf6 12. Ne3 Na5 13. Bc2 c5 14. a3 Nc6 15. b4 b6 16. Bb3 Bd7 17. h3 Nxg3 18. fxg3 Be6 19. h4 Kg7 20. Nd5 Ne7 21. Nxf6 Kxf6 22. 0-0 Kg7 23. Bxe6 fxe6 24. Qb3 Qd7 25. d4 exd4 26. cxd4 cxb4 27. axb4 Rac8 28. b5 Ng8 29. Ra6 Rc7 30. Rfa1 Rb7 31. Qa4 Nf6 32. e5 Ng4 33. Qb4 d5 34. Ne1 Ne3 35. Nd3 Nc2 0-1

[Event "Leiden LCT op-A 11th"]
[Site "Leiden"]
[Date "2017.07.23"]
[Round "9"]
[White "Hensbergen, Willem"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "E81"]
[WhiteElo "2026"]
[BlackElo "2150"]
[PlyCount "42"]
[EventDate "2017.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 c5 7. Nge2 Nc6 8. d5 Ne5 9. Ng3 h5 10. Be2 h4 11. Nf1 e6 12. Nd2 exd5 13. cxd5 h3 14. g4 Bxg4 15. Rg1 Bh5 16. Qb3 b5 17. Bxb5 Nxf3+ 18. Nxf3 Bxf3 19. Qc2 Nxe4 20. Nxe4 Bxe4 21. Qxe4 Qa5+ 0-1

[Event "Leiden LCT op-A 11th"]
[Site "Leiden"]
[Date "2017.07.17"]
[Round "4"]
[White "Kouwenhoven, Derk"]
[Black "Van der Eyk, Dick"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2150"]
[BlackElo "2010"]
[PlyCount "58"]
[EventDate "2017.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 0-0 12. Nc2 Bg5 13. a4 bxa4 14. Rxa4 a5 15. Bc4 Bd7 16. Ra2 a4 17. Bb5 Nb4 18. Bxd7 Nxa2 19. Bc6 Rb8 20. h4 Bc1 21. Bxa4 Bxb2 22. Rh3 Qa5 23. Qh5 Bxc3+ 24. Ke2 Qa6+ 25. Kf3 Nc1 26. Nxc3 Qd3+ 27. Kg4 f5+ 28. exf5 Qc4+ 29. Kg3 Qf4# 0-1

[Event "Leiden LCT op-A 11th"]
[Site "Leiden"]
[Date "2017.07.16"]
[Round "3"]
[White "Kok, Cas"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "1937"]
[BlackElo "2150"]
[PlyCount "73"]
[EventDate "2017.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 Nbd7 7. Be3 e5 8. d5 a5 9. Nd2 Nc5 10. a3 b6 11. 0-0 Ne8 12. Qc2 f5 13. f3 f4 14. Bf2 g5 15. b4 Nb7 16. Na4 Bd7 17. c5 Bxa4 18. Qxa4 axb4 19. Qc6 Na5 20. Qxa8 Qxa8 21. axb4 dxc5 22. bxa5 bxa5 23. Nc4 a4 24. Bxc5 Nd6 25. Rfc1 Rb8 26. Nxd6 cxd6 27. Bxd6 Rb2 28. Bf1 h6 29. Ba3 Rb8 30. d6 Bf8 31. Rc7 Qa5 32. Rac1 Rd8 33. Rb7 Bxd6 34. Bxd6 Rxd6 35. Rcc7 Rf6 36. Rb8+ Rf8 37. Bc4+ 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2017.05.28"]
[Round "7"]
[White "Kouwenhoven, Derk"]
[Black "Clemens, Adrian HP"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2098"]
[BlackElo "2201"]
[PlyCount "65"]
[EventDate "2017.05.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. a3 Nf6 8. Be2 Be7 9. 0-0 0-0 10. f4 d6 11. Qe1 Nxd4 12. Bxd4 e5 13. Be3 exf4 14. Rxf4 Be6 15. Rd1 Nd7 16. Bd4 Ne5 17. Qg3 Rac8 18. Rff1 Ng6 19. Bg4 Bh4 20. Qh3 Rce8 21. Rd2 Bg5 22. Rdf2 Bc4 23. Rd1 Bf4 24. b3 Be6 25. Rdf1 Be5 26. Bxe5 dxe5 27. Bxe6 fxe6 28. Rxf8+ Nxf8 29. Qe3 Qd6 30. Qf2 Qc7 31. Na4 Ng6 32. Nc5 Rf8 33. Qxf8+ 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2017.05.28"]
[Round "6"]
[White "Pel, Bonno"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2255"]
[BlackElo "2098"]
[PlyCount "85"]
[EventDate "2017.05.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. g3 Nf6 2. Bg2 g6 3. e4 d6 4. d4 Bg7 5. Nc3 0-0 6. Nge2 e5 7. 0-0 Bg4 8. h3 exd4 9. hxg4 dxc3 10. Nxc3 Nc6 11. g5 Nd7 12. Nd5 Re8 13. c3 Nc5 14. Qc2 Ne7 15. Ne3 c6 16. Rd1 Qc7 17. Ng4 Red8 18. Be3 Nd7 19. Bd4 Ne5 20. Nf6+ Kh8 21. f4 c5 22. Bf2 Nd7 23. Ng4 f6 24. gxf6 Nxf6 25. Ne3 Rab8 26. Rd2 b5 27. Rad1 Nc6 28. Bf3 a5 29. Kg2 a4 30. a3 Bf8 31. Rh1 Na5 32. g4 Nb3 33. Rdd1 Qf7 34. Bg3 b4 35. Rh2 bxa3 36. bxa3 Rb6 37. e5 Ne8 38. Be4 d5 39. Bxd5 Qc7 40. f5 Rdb8 41. Nc4 Rb5 42. fxg6 Na5 43. Qf5 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2017.05.27"]
[Round "5"]
[White "Kouwenhoven, Derk"]
[Black "Knight, David"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2098"]
[BlackElo "1902"]
[PlyCount "75"]
[EventDate "2017.05.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 e5 3. Bc4 Nf6 4. d3 h6 5. c3 g6 6. 0-0 Bg7 7. d4 exd4 8. e5 Ne4 9. Re1 Ng5 10. Nxg5 hxg5 11. cxd4 Kf8 12. Nc3 g4 13. Bf4 d6 14. exd6 cxd6 15. Nb5 d5 16. Bxd5 Qxd5 17. Re8+ Kxe8 18. Nc7+ Kf8 19. Nxd5 Bf5 20. Bd6+ Kg8 21. Ne7+ Nxe7 22. Bxe7 Re8 23. Bg5 Rh5 24. Be3 Bf6 25. Rc1 Kg7 26. Rc7 g5 27. Qb3 Bg6 28. Qd5 g3 29. hxg3 Reh8 30. Kf1 Rh1+ 31. Ke2 Rb1 32. Rxb7 Rd8 33. Qc4 Bh5+ 34. f3 Bg6 35. d5 Be5 36. Bd4 Re8 37. Qc6 Kf8 38. Qxe8+ 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2017.05.27"]
[Round "4"]
[White "Van Randtwijk, Mick"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2012"]
[BlackElo "2098"]
[PlyCount "72"]
[EventDate "2017.05.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c4 Bd7 7. 0-0 g6 8. Nc3 Bg7 9. Nd5 h6 10. h3 Rb8 11. Be3 b5 12. Nxf6+ Qxf6 13. cxb5 axb5 14. Bb3 Na5 15. Bc2 c5 16. a3 Nc6 17. Bb3 Qe7 18. Bd5 0-0 19. b4 cxb4 20. Bxc6 Bxc6 21. axb4 f5 22. Qc2 Rfc8 23. Ra7 Rb7 24. Rfa1 Rcc7 25. Ra8+ Kh7 26. Qb3 Be8 27. Ne1 Bf7 28. Qb2 f4 29. Bd2 d5 30. Bc3 dxe4 31. dxe4 Rc4 32. f3 Rbc7 33. R1a3 Qd6 34. Nd3 Qxd3 35. Bxe5 Qd1+ 36. Kh2 Rc1 0-1

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2017.05.26"]
[Round "2"]
[White "Bosboom, Ardin"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C26"]
[WhiteElo "1862"]
[BlackElo "2098"]
[PlyCount "72"]
[EventDate "2017.05.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bc5 5. d3 d6 6. Na4 Be6 7. Nxc5 dxc5 8. Nf3 c4 9. 0-0 Qe7 10. b3 cxd3 11. Qxd3 a6 12. Bb2 Rd8 13. Qe3 Bg4 14. Rad1 0-0 15. h3 Bh5 16. g4 Bg6 17. Nh4 Rxd1 18. Rxd1 Rd8 19. Rxd8+ Qxd8 20. Qd3 Qxd3 21. cxd3 Nd7 22. f4 exf4 23. d4 Nb4 24. a3 Nd3 25. Bc3 Nc1 26. Kf2 Nxb3 27. Kf3 c5 28. d5 b5 29. Bf1 f6 30. Nxg6 hxg6 31. Kxf4 Kf7 32. h4 Nb6 33. h5 g5+ 34. Ke3 c4 35. Bg2 Na4 36. Bd4 c3 0-1

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2017.05.26"]
[Round "3"]
[White "Kouwenhoven, Derk"]
[Black "Maatman, Nick"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "2098"]
[BlackElo "2385"]
[PlyCount "50"]
[EventDate "2017.05.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Ngf3 Nf6 5. e5 Nfd7 6. Bd3 c5 7. c3 b6 8. Qe2 Nc6 9. a3 Bb7 10. Nf1 a5 11. Ng3 Qc8 12. Qc2 h5 13. Bg6 cxd4 14. cxd4 h4 15. Nh5 Nd8 16. Qb1 Kf8 17. Bg5 Bxg5 18. Nxg5 Rh6 19. Nf4 fxg6 20. Nxg6+ Ke8 21. f4 Qc4 22. Qd1 Rc8 23. f5 Ba6 24. fxe6 Rxg6 25. exd7+ Kxd7 0-1

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2017.05.25"]
[Round "1"]
[White "Kouwenhoven, Derk"]
[Black "Albertus, Bram"]
[Result "1-0"]
[ECO "B54"]
[WhiteElo "2098"]
[BlackElo "1569"]
[PlyCount "61"]
[EventDate "2017.05.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 g6 6. Be3 Bg7 7. Qd2 Nc6 8. 0-0-0 Bd7 9. h4 h5 10. Nd5 Rb8 11. Bc4 Ne5 12. Bb3 b5 13. f4 Ng4 14. f5 N8f6 15. Nxf6+ Nxf6 16. fxg6 fxg6 17. Qd3 Ng4 18. Nf3 Qc7 19. e5 Bf5 20. exd6 exd6 21. Qd2 Kd7 22. Bf4 Rb6 23. Rhe1 Rc6 24. Re2 Rc8 25. Rde1 Bf8 26. Nd4 Rc5 27. Nxf5 gxf5 28. Be6+ Kc6 29. Bxc8 Qxc8 30. Re8 Qc7 31. Rxf8 1-0

[Event "NED-ch U16 playoff 2nd place"]
[Site "Assen"]
[Date "2017.04.29"]
[Round "12"]
[White "Bekedam, Tyro"]
[Black "Kouwenhoven, Derk"]
[Result "1/2-1/2"]
[ECO "C89"]
[WhiteElo "2004"]
[BlackElo "2077"]
[PlyCount "126"]
[EventDate "2017.04.23"]
[EventType "tourn (rapid)"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Nf6 6. 0-0 Be7 7. Re1 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. Bxd5 cxd5 13. d4 Bd6 14. Re3 Qh4 15. h3 Bf5 16. Nd2 Rfe8 17. Nf3 Qh5 18. Rxe8+ Rxe8 19. Be3 Be4 20. Nd2 Bg6 21. Qxh5 Bxh5 22. Nf1 f5 23. g3 g5 24. Bxg5 Re2 25. Nd2 f4 26. g4 Rxd2 27. gxh5 Rxb2 28. a4 f3 29. axb5 axb5 30. Rc1 Kf7 31. Re1 Rc2 32. Rc1 Re2 33. Kf1 Ke6 34. Re1 Rxe1+ 35. Kxe1 Kf5 36. Be3 Ke4 37. Kd2 Bc7 38. Bg5 Ba5 39. Be7 Bc7 40. Bg5 Bb8 41. Bh6 Bh2 42. Bg5 Bg1 43. Be3 Bh2 44. Bh6 Bd6 45. Be3 b4 46. cxb4 Bxb4+ 47. Kc2 Be1 48. Kd1 Ba5 49. Kc2 Bb6 50. Kc3 Ba5+ 51. Kc2 Bd8 52. Kc3 Bf6 53. h6 Bh8 54. Kd2 Bxd4 55. Bxd4 Kxd4 56. Kc2 Kc4 57. Kd2 Kd4 58. Kc2 Ke4 59. Kc3 Ke5 60. Kd3 d4 61. Kd2 Kf4 62. Kd3 Ke5 63. Kd2 Kd5 1/2-1/2

[Event "NED-ch U16 playoff 2nd place"]
[Site "Assen"]
[Date "2017.04.29"]
[Round "15"]
[White "Kouwenhoven, Derk"]
[Black "Bekedam, Tyro"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2077"]
[BlackElo "2004"]
[PlyCount "104"]
[EventDate "2017.04.23"]
[EventType "tourn (rapid)"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. 0-0 Ne7 7. Nh4 Bg6 8. Nxg6 hxg6 9. c3 Nf5 10. Nd2 c5 11. Nf3 Qb6 12. dxc5 Bxc5 13. b4 Be7 14. Qa4 Qc7 15. Bb5 0-0-0 16. Qxa7 Nb8 17. Bd2 f6 18. c4 d4 19. Bf4 fxe5 20. Bxe5 Bd6 21. Bxd6 Qxd6 22. c5 Qc7 23. Bc4 e5 24. Be6+ Nd7 25. Qa8+ Qb8 26. Qxb8+ Kxb8 27. Bxd7 Rxd7 28. Nxe5 Rd5 29. Nxg6 Rhd8 30. Rad1 d3 31. Rd2 Nd4 32. Nf4 R5d7 33. Nxd3 Nb5 34. Rfd1 Nc3 35. Re1 Rxd3 36. Rxd3 Rxd3 37. f4 Nd5 38. Re4 Rd2 39. g4 Rxa2 40. h4 Nf6 41. Re7 Nxg4 42. Rxg7 Nh2 43. Rg2 Nf3+ 44. Kf1 Ra1+ 45. Kf2 Nxh4 46. Kg3 Nxg2 47. Kxg2 Ra4 48. Kf3 Rxb4 49. f5 Kc7 50. f6 Kd7 51. f7 Ke7 52. c6 bxc6 0-1

[Event "NED-ch U16 playoff 2nd place"]
[Site "Assen"]
[Date "2017.04.29"]
[Round "11"]
[White "Kouwenhoven, Derk"]
[Black "Nguyen, Kevin"]
[Result "1/2-1/2"]
[ECO "B76"]
[WhiteElo "2077"]
[BlackElo "2143"]
[PlyCount "49"]
[EventDate "2017.04.23"]
[EventType "tourn (rapid)"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[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 0-0 9. g4 Be6 10. Nxe6 fxe6 11. 0-0-0 Ne5 12. Be2 Qc8 13. h4 Nc4 14. Bxc4 Qxc4 15. h5 Nd7 16. f4 Nc5 17. hxg6 hxg6 18. Qh2 Rfc8 19. e5 b5 20. Qh7+ Kf7 21. f5 Qxg4 22. fxg6+ Ke8 23. Qxg7 b4 24. exd6 bxc3 25. Qxe7# 1/2-1/2

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2017.04.29"]
[Round "9"]
[White "Nguyen, Kevin"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "2143"]
[BlackElo "2077"]
[PlyCount "120"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 Nge7 7. Nbd2 0-0 8. Re1 b6 9. Nf1 d5 10. e5 Qc7 11. Qe2 Nf5 12. c3 Ba6 13. h4 b5 14. N1h2 d4 15. g4 Nfe7 16. Bg5 Nd5 17. Rac1 Rac8 18. Qd2 dxc3 19. bxc3 Nxe5 20. Bh6 Nxf3+ 21. Nxf3 Bb7 22. Rb1 a6 23. c4 bxc4 24. Bxg7 Kxg7 25. Rxb7 c3 26. Qg5 Qxb7 27. h5 f6 28. Qh4 Qf7 29. g5 gxh5 30. gxf6+ Qxf6 31. Qxh5 Nf4 32. Qg4+ Qg6 33. Ng5 h6 34. Nxe6+ Nxe6 35. Qxg6+ Kxg6 36. Rxe6+ Rf6 37. Re4 Rd6 38. Rc4 Rd4 39. Rxc3 Rd6 40. Ra3 Rc7 41. Rc3 Kg5 42. Kh2 h5 43. Be4 Kf4 44. Bg2 Ke5 45. Ra3 Rf7 46. Kg1 Kd4 47. Ra5 Rg7 48. Kf1 Rg5 49. Be4 h4 50. Ra4+ Kc3 51. f4 Rh5 52. Kg2 h3+ 53. Kh2 Kd2 54. Rc4 Rxd3 55. Bg6 Rhd5 56. Bxd3 Kxd3 57. Ra4 c4 58. Rxa6 c3 59. Rc6 c2 60. Kxh3 Rd4 0-1

[Event "NED-ch U16 playoff 2nd place"]
[Site "Assen"]
[Date "2017.04.29"]
[Round "14"]
[White "Nguyen, Kevin"]
[Black "Kouwenhoven, Derk"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "2143"]
[BlackElo "2077"]
[PlyCount "79"]
[EventDate "2017.04.23"]
[EventType "tourn (rapid)"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. b3 Nc6 3. Bb2 d6 4. f4 Nf6 5. Nc3 g6 6. Nf3 Bg7 7. Bb5 0-0 8. Bxc6 bxc6 9. h3 Nxe4 10. 0-0 Nxc3 11. Bxc3 Bxc3 12. dxc3 Ba6 13. Re1 Qc7 14. Qd2 d5 15. f5 Kg7 16. Qe3 Rae8 17. Rad1 Qb6 18. Kh1 e6 19. fxg6 hxg6 20. Qe5+ f6 21. Qd6 Bc8 22. b4 cxb4 23. cxb4 Rd8 24. Qf4 e5 25. Qd2 Bf5 26. c3 Be4 27. Nh2 Rh8 28. Re3 f5 29. c4 f4 30. Ra3 dxc4 31. Qe1 Rxd1 32. Qxd1 Rd8 33. Qg4 Bf5 34. Qf3 Rd3 35. Rxd3 cxd3 36. Ng4 d2 37. Nxe5 Qxb4 38. Nd3 Qb1+ 39. Kh2 d1Q 40. Nxf4 1/2-1/2

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2017.04.28"]
[Round "8"]
[White "Reichardt, Robin"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "E63"]
[WhiteElo "1855"]
[BlackElo "2077"]
[PlyCount "106"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 0-0 5. g3 d6 6. Bg2 Nc6 7. 0-0 a6 8. h3 Rb8 9. e4 b5 10. d5 Na5 11. cxb5 axb5 12. Nd4 b4 13. Nce2 e5 14. Nb3 Nxb3 15. Qxb3 Ba6 16. Re1 Nd7 17. Be3 f5 18. f4 fxe4 19. Bxe4 Qe7 20. Bd3 Bc8 21. Rac1 Nb6 22. Kh2 Qd7 23. Ng1 Bb7 24. Be4 exf4 25. Bxf4 Rbe8 26. Bg2 Re7 27. Re6 Rfe8 28. Rce1 Ba8 29. Bg5 Rxe6 30. dxe6 Qa4 31. Qxa4 Nxa4 32. Bxa8 Rxa8 33. Rf1 Nc5 34. e7 Re8 35. b3 Ne4 36. Nf3 h6 37. Bd2 c5 38. Re1 Rxe7 39. Bf4 d5 40. Nd2 Bc3 41. Bxh6 Bxd2 42. Bxd2 Ra7 43. a4 Nxd2 44. Re6 Nxb3 45. Rxg6+ Kh7 46. Rd6 d4 47. h4 c4 48. g4 c3 49. g5 c2 50. h5 c1Q 51. Rh6+ Kg7 52. Rg6+ Kf7 53. Rf6+ Ke7 0-1

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2017.04.27"]
[Round "7"]
[White "Kouwenhoven, Derk"]
[Black "Dijkhuis, Oele"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "2077"]
[BlackElo "1944"]
[PlyCount "54"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. g4 Be6 10. Nxe6 fxe6 11. 0-0-0 Rc8 12. h4 Qa5 13. Kb1 Nd7 14. Be2 Nb6 15. Nb5 Nb4 16. a3 Rxc2 17. axb4 Rxd2 18. Bxd2 Qa4 19. Rc1 d5 20. h5 d4 21. Nc7 Qb3 22. Bd1 Qd3+ 23. Rc2 Rc8 24. Bf4 g5 25. Bh2 Nc4 26. Be2 Nd2+ 27. Kc1 Qxe2 0-1

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2017.04.26"]
[Round "6"]
[White "Kokje, Joris"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "E85"]
[WhiteElo "2187"]
[BlackElo "2077"]
[PlyCount "69"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Nge2 e5 7. Be3 Nh5 8. g4 Nf4 9. Qd2 Nxe2 10. Nxe2 f5 11. gxf5 gxf5 12. 0-0-0 f4 13. Bf2 Nc6 14. d5 Ne7 15. h4 h5 16. Kb1 Bf6 17. Ng1 Ng6 18. Nh3 Kf7 19. Ng5+ Bxg5 20. hxg5 Qxg5 21. Bh3 Rh8 22. Be6+ Ke7 23. c5 Qf6 24. Qb4 b6 25. cxd6+ cxd6 26. Rc1 Bxe6 27. dxe6 Qxe6 28. Rc7+ Kf6 29. Qe1 h4 30. Bxh4+ Nxh4 31. Rxh4 Rac8 32. Qh1 Rxc7 33. Rxh8 Rg7 34. Qh6+ Kf7 35. Rf8+ 1-0

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2017.04.26"]
[Round "5"]
[White "Kouwenhoven, Derk"]
[Black "Wedda, Dries"]
[Result "1-0"]
[ECO "B94"]
[WhiteElo "2077"]
[BlackElo "2079"]
[PlyCount "75"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Qe2 h6 8. Bh4 g6 9. f4 e5 10. fxe5 dxe5 11. 0-0-0 Qc7 12. Nb3 b5 13. Kb1 Be7 14. Qe1 Bb7 15. Nd5 Nxd5 16. exd5 Rc8 17. Bxe7 Qxc2+ 18. Ka1 Kxe7 19. Bd3 Qc7 20. Bxb5 Qd6 21. Bxd7 Kxd7 22. Na5 Bxd5 23. Qd2 Ke6 24. Rhe1 Qc5 25. Qe2 f6 26. Qxa6+ Ke7 27. Nb3 Bxb3 28. Qb7+ Rc7 29. Qxb3 Rhc8 30. a3 Qc2 31. Qd5 Qc6 32. Qd2 h5 33. Rf1 Rb8 34. Qh6 Qxg2 35. Qg7+ Ke8 36. Qh8+ Kf7 37. Rxf6+ Ke7 38. Qg7+ 1-0

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2017.04.25"]
[Round "4"]
[White "Bekedam, Tyro"]
[Black "Kouwenhoven, Derk"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2004"]
[BlackElo "2077"]
[PlyCount "88"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. 0-0 d5 7. Nxd4 Bd7 8. exd5 Nxd4 9. Qxd4 Bxa4 10. Qxa4+ b5 11. Qd4 Qxd5 12. Qe3+ Qe4 13. Nc3 Qxe3 14. Bxe3 0-0-0 15. Rad1 Bb4 16. Bd4 Rhe8 17. Bxf6 gxf6 18. Nd5 Bc5 19. b4 Ba7 20. Nf4 Rxd1 21. Rxd1 Re4 22. Nd3 Rc4 23. Rd2 Rc3 24. Nc1 c5 25. bxc5 Bxc5 26. Nb3 Bb4 27. Re2 a5 28. g3 a4 29. Nd4 Rc5 30. Re8+ Kd7 31. Rb8 Rc4 32. Nxb5 Rxc2 33. Rb7+ Kc8 34. Rxf7 Rxa2 35. Rxf6 a3 36. Nxa3 Rxa3 37. Rf7 h6 38. Rf6 Bd2 39. f4 h5 40. Rf8+ Kd7 41. Rf5 Ra5 42. Rxa5 Bxa5 43. Kg2 Ke6 44. Kf3 Kf5 1/2-1/2

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2017.04.24"]
[Round "2"]
[White "Klein, Jorik"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1905"]
[BlackElo "2077"]
[PlyCount "106"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. 0-0 a6 6. c3 Ba7 7. Nbd2 d6 8. b4 a5 9. b5 Ne7 10. Re1 Ng6 11. Nf1 0-0 12. a4 h6 13. Ne3 Re8 14. Qb3 Be6 15. Bxe6 fxe6 16. Nc4 Nd7 17. Be3 Bxe3 18. Nxe3 Nf4 19. Rad1 Qf6 20. d4 Rf8 21. dxe5 Nxe5 22. Nxe5 Qxe5 23. f3 Rf7 24. Qc4 Raf8 25. Qd4 Qg5 26. Rd2 b6 27. Qc4 d5 28. exd5 exd5 29. Qd4 Re8 30. Nc2 Rxe1+ 31. Nxe1 Re7 32. Kf1 Qf5 33. Nd3 Ng6 34. Re2 Rxe2 35. Kxe2 Kh7 36. Qg4 Qf6 37. Qd4 Qd6 38. g3 c5 39. bxc6 Qxc6 40. Nf4 Nxf4+ 41. Qxf4 Qe6+ 42. Kd3 Qc6 43. Kd2 Qc5 44. Kd3 b5 45. axb5 Qxb5+ 46. Ke3 Kg8 47. Qe5 a4 48. Qe6+ Kf8 49. Qc8+ Qe8+ 50. Qxe8+ Kxe8 51. Kd3 Kd7 52. Kc2 Kd6 53. Kb2 Kc5 0-1

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2017.04.24"]
[Round "3"]
[White "Kouwenhoven, Derk"]
[Black "Tang, Charlie1111"]
[Result "1/2-1/2"]
[ECO "C06"]
[WhiteElo "2077"]
[BlackElo "2041"]
[PlyCount "87"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ngf3 Be7 8. 0-0 g5 9. h3 h5 10. dxc5 g4 11. hxg4 hxg4 12. Nd4 Ncxe5 13. Bb5 Bxc5 14. g3 a6 15. Be2 Qg5 16. N2f3 Nxf3+ 17. Nxf3 Qh5 18. Nh4 Nf6 19. Qa4+ Bd7 20. Qf4 Be7 21. Kg2 e5 22. Qe3 Bc6 23. f3 Nd7 24. Rh1 d4 25. cxd4 exd4 26. Qf4 Ne5 27. Bd2 gxf3+ 28. Nxf3 Ng6 29. Qxd4 Rd8 30. Rxh5 Rxd4 31. Rxh8+ Nxh8 32. Bc3 Re4 33. Kf1 Ng6 34. Nd4 Bd5 35. Bf3 Re5 36. Bxd5 Rxd5 37. Re1 Kd7 38. Kg2 Bf6 39. Ne2 Bxc3 40. Nxc3 Rd2+ 41. Re2 Rxe2+ 42. Nxe2 Ne5 43. Nf4 Kd6 44. Kf2 1/2-1/2

[Event "NED-ch U16"]
[Site "Assen"]
[Date "2017.04.23"]
[Round "1"]
[White "Kouwenhoven, Derk"]
[Black "Post, Jesper"]
[Result "1-0"]
[ECO "B55"]
[WhiteElo "2077"]
[BlackElo "1694"]
[PlyCount "99"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 a6 6. Bg5 e6 7. Nd2 Be7 8. 0-0 0-0 9. c3 Nbd7 10. Bc2 b5 11. a4 Bb7 12. Qe2 b4 13. cxb4 Qb6 14. N2b3 Qxb4 15. Bd2 Qb6 16. Rac1 Nc5 17. Ba5 Qa7 18. Nxc5 dxc5 19. Nf3 Bc6 20. Ne5 Qb7 21. Nxc6 Qxc6 22. Bc3 Rfd8 23. Bxf6 Bxf6 24. e5 Be7 25. Be4 Qxa4 26. Bxa8 Rxa8 27. Rfd1 g6 28. Rc2 Rb8 29. Rcd2 Rb7 30. g3 Kg7 31. h4 h5 32. Kh2 Rb3 33. Rd3 Rxd3 34. Rxd3 Qb5 35. Rd2 Qxe2 36. Rxe2 f6 37. f4 fxe5 38. Rxe5 Bf6 39. Rxe6 Bxb2 40. Rxa6 c4 41. Rc6 c3 42. Kg2 Kf7 43. Kf3 Ke7 44. Ke4 Kd7 45. Rc4 Kd6 46. Kd3 Kd5 47. Rc8 Ke6 48. Rc5 Kf6 49. Rc7 Ke6 50. Rg7 1-0

[Event "Hoogeveen Unive op 20th"]
[Site "Hoogeveen"]
[Date "2016.10.22"]
[Round "9"]
[White "Kouwenhoven, Derk"]
[Black "Mellema, Andries"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "1964"]
[BlackElo "2143"]
[PlyCount "99"]
[EventDate "2016.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 b6 3. Nf3 Bb7 4. Bd3 Nf6 5. Nbd2 c5 6. 0-0 c4 7. Bxc4 Nxe4 8. Nxe4 Bxe4 9. d5 Qc7 10. Qe2 Bxf3 11. Qxf3 Qxc4 12. dxe6 fxe6 13. Qxa8 Bd6 14. Be3 0-0 15. Qb7 Qxc2 16. Rad1 Qc7 17. Qxc7 Bxc7 18. Rd2 Rc8 19. f4 g6 20. Rc1 g5 21. Kf1 gxf4 22. Bxf4 Nc6 23. Bxc7 Rxc7 24. Kf2 Kf7 25. b4 b5 26. Kg3 Ke7 27. Rc5 d5 28. Rxb5 Kd6 29. Rc2 Rg7+ 30. Kf2 Nd4 31. Rcc5 Nxb5 32. Rxb5 e5 33. g3 Rc7 34. Ra5 e4 35. Ke3 Ke5 36. a4 Rc2 37. h4 h5 38. Rb5 Rg2 39. a5 a6 40. Rc5 Rxg3+ 41. Kf2 Rb3 42. Rc6 Rxb4 43. Rxa6 Rb2+ 44. Ke1 Kd4 45. Rd6 Ra2 46. a6 e3 47. Kd1 Ke4 48. Re6+ Kd3 49. Kc1 e2 50. Kb1 0-1

[Event "Hoogeveen Unive op 20th"]
[Site "Hoogeveen"]
[Date "2016.10.21"]
[Round "8"]
[White "Hulshof, Peter"]
[Black "Kouwenhoven, Derk"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "2223"]
[BlackElo "1964"]
[PlyCount "100"]
[EventDate "2016.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. g3 g6 2. Bg2 Bg7 3. e4 d6 4. d3 c5 5. Nc3 Nc6 6. f4 e6 7. Nf3 Nge7 8. 0-0 0-0 9. Be3 b6 10. d4 d5 11. exd5 Nf5 12. Bf2 Ncxd4 13. Ne5 exd5 14. Nxd5 Ba6 15. Re1 Rc8 16. c3 Ne6 17. Qa4 Bb7 18. Rad1 Bxe5 19. Rxe5 Nd6 20. Qxa7 Ra8 21. Qxb6 Rxa2 22. Qxd8 Rxd8 23. Nf6+ Kg7 24. Rxd6 Ra1+ 25. Re1 Rxe1+ 26. Bxe1 Kxf6 27. Rxd8 Nxd8 28. Bxb7 Nxb7 29. b4 Ke6 30. Kf2 Kd5 31. Ke3 f5 32. h3 Nd6 33. bxc5 Kxc5 34. Kd3 Kd5 35. g4 Nc4 36. gxf5 gxf5 37. Bh4 Nd6 38. Be7 Nc4 39. Bf6 Nd6 40. Bh8 Nc4 41. Be5 Nxe5+ 42. fxe5 Kxe5 43. Ke3 Kd5 44. Kf4 Kc4 45. Kxf5 Kxc3 46. Kg5 Kd4 47. Kh6 Ke4 48. Kxh7 Kf4 49. h4 Kg4 50. h5 Kxh5 1/2-1/2

[Event "Hoogeveen Unive op 20th"]
[Site "Hoogeveen"]
[Date "2016.10.20"]
[Round "7"]
[White "Kouwenhoven, Derk"]
[Black "Vogel, Jaap"]
[Result "0-1"]
[ECO "C06"]
[WhiteElo "1964"]
[BlackElo "2134"]
[PlyCount "136"]
[EventDate "2016.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ngf3 g6 8. h4 h6 9. 0-0 Qb6 10. a3 a5 11. dxc5 Nxc5 12. Bb1 a4 13. Re1 Bg7 14. Nf1 Na5 15. Be3 Nc4 16. Qd4 Nxe3 17. Nxe3 Nd7 18. h5 g5 19. Bd3 Qxd4 20. cxd4 Nb6 21. Rac1 Bd7 22. Rc3 Ke7 23. b4 Rac8 24. Rc5 Na8 25. Rec1 b6 26. Rxc8 Rxc8 27. Rxc8 Bxc8 28. b5 Nc7 29. Nd1 Bd7 30. Nc3 Kd8 31. Nh2 f5 32. exf6 Bxf6 33. Nf3 Be8 34. Ne5 Be7 35. Nc6+ Bxc6 36. bxc6 Bxa3 37. Nxa4 b5 38. Nc3 b4 39. Na4 b3 40. Kf1 Ke7 41. Ke2 Kd6 42. f3 Kxc6 43. Ke3 Bc1+ 44. Ke2 Nb5 45. Kd1 Ba3 46. Kd2 Nxd4 47. Kc3 e5 48. Bg6 Kb5 49. Be8+ Ka5 50. Kd3 b2 51. Nc3 Bb4 52. Nb1 Kb6 53. Bg6 Kc5 54. Bh7 Ne6 55. g3 Nd4 56. Ke3 Be1 57. g4 Bb4 58. Bg6 Kc4 59. Bf7 Nc2+ 60. Ke2 Kd4 61. Bg6 Ne3 62. Bh7 e4 63. fxe4 dxe4 64. Bg6 Nxg4 65. Be8 Ne3 66. Bb5 Nd5 67. Kd1 Nc3+ 68. Kc2 Nxb5 0-1

[Event "Hoogeveen Unive op 20th"]
[Site "Hoogeveen"]
[Date "2016.10.19"]
[Round "6"]
[White "Bos, Robin"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C29"]
[WhiteElo "2025"]
[BlackElo "1964"]
[PlyCount "80"]
[EventDate "2016.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Qf3 Nxc3 6. bxc3 Be7 7. d4 c5 8. Ne2 Nc6 9. g3 0-0 10. Bg2 Be6 11. 0-0 Qd7 12. Be3 f6 13. h3 fxe5 14. Qh5 g6 15. Qh6 Nd8 16. Rxf8+ Bxf8 17. Qh4 Nf7 18. dxe5 Be7 19. Qf4 Bxh3 20. Rd1 Bxg2 21. Kxg2 Qc6 22. Kh2 Bg5 23. Qf3 Bxe3 24. Qxe3 Re8 25. Nf4 Nxe5 26. Qe2 d4 27. Rf1 dxc3 28. g4 Qd7 29. Kg3 Qd2 30. Re1 Qxe2 31. Rxe2 Kf7 32. Re3 Nc4 33. Rxc3 Re3+ 34. Rxe3 Nxe3 35. c3 g5 36. Ne2 Ke6 37. Kf3 Nc4 38. Ng3 Ne5+ 39. Ke2 Kd5 40. Nf5 Nxg4 0-1

[Event "Hoogeveen Unive op 20th"]
[Site "Hoogeveen"]
[Date "2016.10.19"]
[Round "5"]
[White "Kouwenhoven, Derk"]
[Black "Hendriks, Richard V"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "1964"]
[BlackElo "2122"]
[PlyCount "57"]
[EventDate "2016.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d4 exd4 5. Nxd4 d6 6. Be3 Nf6 7. Nc3 0-0 8. 0-0 Ng4 9. Qe2 Nxe3 10. Nxc6 bxc6 11. Qxe3 Bf6 12. f4 Re8 13. Rae1 d5 14. Rd1 Bxc3 15. bxc3 Bg4 16. Rd4 Qe7 17. Bd3 Bf5 18. e5 Bxd3 19. cxd3 f6 20. Re1 Qe6 21. Qf3 Qf5 22. c4 fxe5 23. fxe5 Rxe5 24. Qxf5 Rxf5 25. Re7 Raf8 26. h3 R8f7 27. Re8+ Rf8 28. Re7 R8f7 29. Re8+ 1/2-1/2

[Event "Hoogeveen Unive op 20th"]
[Site "Hoogeveen"]
[Date "2016.10.18"]
[Round "4"]
[White "Nguyen, Kevin"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2185"]
[BlackElo "1964"]
[PlyCount "125"]
[EventDate "2016.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d6 6. Nc3 Nbd7 7. e4 e5 8. a4 exd4 9. Nxd4 Re8 10. h3 Nc5 11. Re1 a5 12. Bf4 Nh5 13. Be3 Nf6 14. f3 h5 15. Bf2 c6 16. Qd2 Qc7 17. Rad1 b6 18. f4 Bb7 19. f5 Rad8 20. Qf4 Nh7 21. Nf3 Qe7 22. Bd4 g5 23. Qd2 Be5 24. Qf2 Ba6 25. Nxe5 dxe5 26. Bxc5 bxc5 27. Bf1 Bxf1 28. Qxf1 Qb7 29. b3 Rd4 30. Rd3 Red8 31. Red1 Qb4 32. Na2 Qa3 33. Nc1 Nf6 34. Rxd4 cxd4 35. Nd3 Kh7 36. Qe1 Re8 37. Kh2 Qa2 38. Rd2 Qa3 39. Re2 Qa2 40. Qxa5 Nxe4 41. Nb4 Qb2 42. Rxe4 d3 43. Qc7 Kg7 44. Qxc6 d2 45. Nd3 Qa1 46. Nf2 d1Q 47. Nxd1 Qxd1 48. Qc3 Kh7 49. Re1 Qd6 50. a5 e4 51. Qe3 f6 52. Qe2 Kh6 53. a6 h4 54. Qf2 hxg3+ 55. Qxg3 Qd2+ 56. Kh1 e3 57. a7 e2 58. Qf2 Qxc2 59. b4 Qa4 60. Qb6 Qa3 61. Qxf6+ Kh5 62. Kh2 Rh8 63. Qxh8# 1-0

[Event "Hoogeveen Unive op 20th"]
[Site "Hoogeveen"]
[Date "2016.10.17"]
[Round "3"]
[White "Kouwenhoven, Derk"]
[Black "De Graaf, Dick"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1964"]
[BlackElo "2195"]
[PlyCount "70"]
[EventDate "2016.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. Be3 a6 5. Qd2 b5 6. a3 Bb7 7. Nh3 Nd7 8. 0-0-0 Rc8 9. Be2 c5 10. d5 b4 11. Nb1 Nb6 12. axb4 Na4 13. c3 cxb4 14. Bd4 Nf6 15. Qc2 Qa5 16. c4 0-0 17. Nd2 Nc5 18. b3 e6 19. Kb1 Qc7 20. f4 exd5 21. exd5 a5 22. Qb2 Qd8 23. Nf2 a4 24. Ng4 Ncd7 25. Ne4 Nxe4 26. Bxg7 f6 27. Bxf8 Nc3+ 28. Kc1 a3 29. Qd2 Qxf8 30. Rde1 f5 31. Nf2 Nc5 32. Qc2 Qf6 33. Bd1 a2 34. Kb2 Ra8 35. Bf3 Nd1+ 0-1

[Event "Hoogeveen Unive op 20th"]
[Site "Hoogeveen"]
[Date "2016.10.16"]
[Round "2"]
[White "Harsha, Bharathakoti"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2363"]
[BlackElo "1964"]
[PlyCount "111"]
[EventDate "2016.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 d6 5. Nc3 0-0 6. Nge2 c5 7. Be3 Nc6 8. d5 Ne5 9. Ng3 h5 10. Be2 h4 11. Nf1 e6 12. Nd2 exd5 13. cxd5 a6 14. a4 Bd7 15. 0-0 h3 16. g4 Qc8 17. a5 Nh7 18. g5 f5 19. f4 Ng4 20. Bxg4 fxg4 21. Nc4 Qc7 22. e5 dxe5 23. d6 Qc6 24. Qd5+ Kh8 25. Nxe5 Bxe5 26. Qxe5+ Nf6 27. Rf2 Rae8 28. Qxc5 g3 29. hxg3 Ng4 30. Bd4+ Kh7 31. Qxc6 Bxc6 32. Rh2 Nxh2 33. Kxh2 Kg8 34. Be5 Kf7 35. Rd1 Ke6 36. d7 Bxd7 37. Rd6+ Ke7 38. Nd5+ Kd8 39. Nb6 Rf7 40. Nxd7 Rxd7 41. Rxg6 Rxe5 42. fxe5 Rd2+ 43. Kxh3 Rxb2 44. Kg4 Ke7 45. Kf4 Rf2+ 46. Ke3 Ra2 47. Rb6 Rxa5 48. Ke4 Ra1 49. Rxb7+ Ke6 50. g6 Re1+ 51. Kf4 Rf1+ 52. Kg4 Rf8 53. g7 Rg8 54. Kg5 Kxe5 55. Kg6 a5 56. Kh7 1-0

[Event "Hoogeveen Unive op 20th"]
[Site "Hoogeveen"]
[Date "2016.10.15"]
[Round "1"]
[White "Kouwenhoven, Derk"]
[Black "Grant, Jonathan"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1964"]
[BlackElo "2223"]
[PlyCount "113"]
[EventDate "2016.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. 0-0 Bg6 7. c3 Nh6 8. Bxh6 gxh6 9. Qd2 Bg7 10. Na3 0-0 11. Bd3 f6 12. Rae1 fxe5 13. Nxe5 Nxe5 14. dxe5 Qc7 15. f4 Bxd3 16. Qxd3 Qb6+ 17. Kh1 Qxb2 18. Nc2 Qb6 19. Nd4 Rae8 20. Qh3 c5 21. Rb1 Rxf4 22. Rg1 Qa6 23. Nb5 Re7 24. Qe3 Ref7 25. Nd6 Rf8 26. Qh3 Qe2 27. Qxe6+ Kh8 28. Qxd5 Bxe5 29. Rxb7 Qh5 30. h3 Rf2 31. Qd3 Qg6 32. Qxg6 hxg6 33. Nc4 Bxc3 34. Rxa7 R2f4 35. Ne3 Rd8 36. Rb1 h5 37. Nd5 Rc4 38. Nxc3 Rxc3 39. Rbb7 c4 40. a4 Rcd3 41. Rc7 c3 42. a5 g5 43. Kh2 g4 44. hxg4 hxg4 45. a6 R3d6 46. Rxc3 Rg8 47. Kg3 Rgd8 48. Ra3 Rd3+ 49. Rxd3 Rxd3+ 50. Kxg4 Ra3 51. g3 Ra5 52. Kf4 Kg8 53. g4 Kh8 54. g5 Kg8 55. Kg4 Ra1 56. Kf5 Kf8 57. Kg6 1-0

[Event "NED-ch U14"]
[Site "Rotterdam"]
[Date "2016.05.07"]
[Round "9"]
[White "Van Randtwijk, Mick"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "1939"]
[BlackElo "1904"]
[PlyCount "68"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. Bg5 Bg7 8. 0-0 0-0 9. Re1 h6 10. Bh4 b5 11. Bc2 Re8 12. Nbd2 Na5 13. Nf1 c5 14. Ne3 Be6 15. d4 Qc7 16. Bg3 Nh5 17. dxe5 dxe5 18. Qe2 Nf4 19. Bxf4 exf4 20. Nf1 Nc6 21. b3 Bxc3 22. Rad1 Bxe1 23. Qxe1 Ne5 24. Nxe5 Qxe5 25. Nd2 Bg4 26. f3 Be6 27. g3 Rad8 28. Kg2 Rd7 29. Nf1 Red8 30. Rxd7 Rxd7 31. gxf4 Qxf4 32. Qe3 Qxe3 33. Nxe3 Rd2+ 34. Kg3 Re2 0-1

[Event "NED-ch U14"]
[Site "Rotterdam"]
[Date "2016.05.06"]
[Round "8"]
[White "Kouwenhoven, Derk"]
[Black "Wedda, Dries"]
[Result "1-0"]
[ECO "B94"]
[WhiteElo "1904"]
[BlackElo "1879"]
[PlyCount "85"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Qe2 h6 8. Bh4 g6 9. 0-0-0 e5 10. Nb3 Be7 11. f3 h5 12. g3 Qc7 13. Bh3 Nb6 14. Bxc8 Rxc8 15. Qd3 Rd8 16. Rhf1 0-0 17. Qe2 d5 18. Bxf6 Bxf6 19. Nxd5 Nxd5 20. Rxd5 Rxd5 21. exd5 Rd8 22. Rd1 a5 23. Qb5 Bg5+ 24. Kb1 Qc6 25. Qxc6 bxc6 26. d6 a4 27. Na5 c5 28. d7 Ra8 29. Nb7 Bd8 30. Nxc5 Kf8 31. Rd5 f6 32. Ne6+ Ke7 33. Nxd8 Rxd8 34. c4 Rxd7 35. Rxd7+ Kxd7 36. Kc2 f5 37. Kd3 g5 38. h3 h4 39. g4 e4+ 40. Ke3 exf3 41. gxf5 g4 42. hxg4 h3 43. Kxf3 1-0

[Event "NED-ch U14"]
[Site "Rotterdam"]
[Date "2016.05.05"]
[Round "7"]
[White "Tang, Charlie"]
[Black "Kouwenhoven, Derk"]
[Result "1/2-1/2"]
[ECO "C68"]
[WhiteElo "1902"]
[BlackElo "1904"]
[PlyCount "130"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bd6 6. d4 Bg4 7. dxe5 Bc5 8. Qxd8+ Rxd8 9. Bg5 Ne7 10. Nbd2 h6 11. Bh4 Rd7 12. Bg3 0-0 13. Nb3 Ba7 14. Rad1 Rfd8 15. Rxd7 Rxd7 16. h3 Be6 17. c3 Rd3 18. Nc1 Rd8 19. Nb3 Rd3 20. Nc1 Rd8 21. Nb3 c5 22. Bf4 Ng6 23. Be3 b6 24. Re1 c6 25. Nc1 Bb8 26. a3 Nxe5 27. Nxe5 Bxe5 28. f4 Bc7 29. Kf2 Kf8 30. Ne2 Ke7 31. Ng1 Bc4 32. g4 h5 33. g5 g6 34. Ne2 a5 35. h4 Rd7 36. Ng3 Kf8 37. Kf3 Rd3 38. Re2 b5 39. Rd2 Bd6 40. Rxd3 Bxd3 41. e5 Be7 42. Ne4 c4 43. Bb6 b4 44. Bxa5 bxa3 45. bxa3 Bxa3 46. Bb6 Bxe4+ 47. Kxe4 Ke7 48. Be3 Ke6 49. Kd4 Kf5 50. Kxc4 Kg4 51. Bf2 Kxf4 52. Kd4 Kf5 53. Be1 Ke6 54. Bg3 Bb2 55. Be1 Bc1 56. Ke4 c5 57. Bg3 Bb2 58. Be1 Ba3 59. Bf2 Bb2 60. Be1 Bc1 61. Bg3 Bd2 62. Kd3 Bc1 63. Ke4 Bb2 64. Be1 Ba1 65. Bd2 Bb2 1/2-1/2

[Event "NED-ch U14"]
[Site "Rotterdam"]
[Date "2016.05.04"]
[Round "6"]
[White "Kouwenhoven, Derk"]
[Black "Vrolijk, Liam"]
[Result "0-1"]
[ECO "C06"]
[WhiteElo "1904"]
[BlackElo "2162"]
[PlyCount "70"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 a6 4. Ngf3 Nf6 5. e5 Nfd7 6. Bd3 c5 7. c3 Nc6 8. 0-0 g5 9. Nb3 h6 10. dxc5 Nxc5 11. Re1 Nxd3 12. Qxd3 Bg7 13. g4 Qc7 14. Qe2 Ne7 15. Nbd4 Ng6 16. a4 Bd7 17. Bd2 Qc4 18. Qd1 Qc7 19. Qe2 Qc4 20. b3 Qxe2 21. Rxe2 0-0 22. Kg2 f6 23. exf6 Rxf6 24. Rae1 Raf8 25. h4 gxh4 26. g5 hxg5 27. Bxg5 h3+ 28. Kg3 R6f7 29. Nh4 Nxh4 30. Kxh4 e5 31. Nc2 Rxf2 32. Ne3 Be6 33. Kg3 R8f3+ 34. Kh4 h2 35. Rxf2 Rh3# 0-1

[Event "NED-ch U14"]
[Site "Rotterdam"]
[Date "2016.05.03"]
[Round "5"]
[White "Wouters, Colin"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "1517"]
[BlackElo "1904"]
[PlyCount "46"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 0-0 8. 0-0 Re8 9. Qf3 d5 10. exd5 Bg4 11. Qg3 cxd5 12. Bg5 Bxc3 13. bxc3 Bh5 14. Bxf6 Qxf6 15. Qxc7 Rac8 16. Qxa7 Qxc3 17. Qb7 d4 18. Qb3 Be2 19. Rfe1 Bxd3 20. Rxe8+ Rxe8 21. Qxc3 dxc3 22. cxd3 c2 23. Kf1 Rb8 0-1

[Event "NED-ch U14"]
[Site "Rotterdam"]
[Date "2016.05.02"]
[Round "4"]
[White "Kouwenhoven, Derk"]
[Black "Krouwel, Gabriel Tristan"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "1904"]
[BlackElo "1727"]
[PlyCount "49"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. 0-0 b5 6. Re1 Rb8 7. d3 d6 8. c3 Bd7 9. d4 Qc7 10. Be3 Na5 11. e5 dxe5 12. Nxe5 Bxe5 13. dxe5 Be6 14. Nd2 Rd8 15. Qc2 Bf5 16. Be4 Qxe5 17. Bf4 Bxe4 18. Nxe4 Qh5 19. Bc7 Nc6 20. Bxd8 Ne5 21. Bc7 Nf3+ 22. Kg2 f5 23. Nxc5 Ng5 24. Qe2 Qh3+ 25. Kh1 1-0

[Event "NED-ch U14"]
[Site "Rotterdam"]
[Date "2016.05.01"]
[Round "3"]
[White "Emans, Job"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1500"]
[BlackElo "1904"]
[PlyCount "60"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Nb6 9. b3 g6 10. f4 Bg7 11. Bb2 d6 12. Nd2 0-0 13. h3 Re8 14. Nf3 Bb7 15. g3 Rad8 16. Bg2 dxe5 17. fxe5 Qb4+ 18. Kf2 Nd7 19. Rhe1 Nxe5 20. Kf1 f6 21. Bxe5 fxe5 22. Rad1 Rd6 23. Qe3 c5 24. Qe2 e4 25. Ng5 Bd4 26. Bxe4 Bxe4 27. Nxe4 Rde6 28. Qg4 Qa5 29. a4 Qb4 30. Qe2 Rxe4 0-1

[Event "NED-ch U14"]
[Site "Rotterdam"]
[Date "2016.04.30"]
[Round "2"]
[White "Kouwenhoven, Derk"]
[Black "Albertus, Bram"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1904"]
[BlackElo "1406"]
[PlyCount "83"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Be3 e5 5. Bc4 Be7 6. h3 a6 7. Nf3 b5 8. Bd5 Nxd5 9. Nxd5 Bb7 10. Nxe7 Qxe7 11. d5 c5 12. Qe2 h6 13. a4 b4 14. a5 Nf6 15. Nd2 0-0 16. g4 Nh7 17. Nc4 Rad8 18. h4 f6 19. 0-0-0 Rf7 20. Rdg1 g5 21. Bd2 Kg7 22. Rh2 Rh8 23. Rgh1 Nf8 24. Ne3 Bc8 25. Nf5+ Bxf5 26. gxf5 Nh7 27. Qh5 Kg8 28. Rg1 Rg7 29. Rhg2 Qd8 30. Kb1 Qe7 31. f4 exf4 32. Bxf4 Qxe4 33. Bxd6 Qxf5 34. Qe8+ Nf8 35. Bxf8 Kh7 36. Re1 b3 37. d6 Rhg8 38. Qe7 c4 39. Bxg7 Rxg7 40. Qe4 bxc2+ 41. Qxc2 Kg6 42. h5+ 1-0

[Event "NED-ch U14"]
[Site "Rotterdam"]
[Date "2016.04.29"]
[Round "1"]
[White "Hematyar, Fardin"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "C29"]
[WhiteElo "1399"]
[BlackElo "1904"]
[PlyCount "85"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 e5 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Bg4 6. d3 Nxc3 7. bxc3 d4 8. Be2 dxc3 9. 0-0 Bc5+ 10. Kh1 0-0 11. Ng5 Bxe2 12. Qxe2 h6 13. Ne4 Nd7 14. Bxh6 gxh6 15. Qh5 Be3 16. Rf3 f5 17. Rxe3 Nxe5 18. Rg3+ Ng4 19. Qxh6 Rf7 20. Ng5 Re7 21. Qg6+ Rg7 22. Qe6+ Kf8 23. Qxf5+ Qf6 24. Ne6+ Kf7 25. Qxf6+ Nxf6 26. Rxg7+ Kxe6 27. Re1+ Kd6 28. Rg6 Rf8 29. Rf1 Ke7 30. Rfxf6 Rxf6 31. Rxf6 Kxf6 32. h4 b5 33. Kg1 a5 34. Kf2 c5 35. Ke3 b4 36. d4 c4 37. d5 a4 38. Kd4 b3 39. Kxc3 Ke5 40. cxb3 cxb3 41. axb3 a3 42. b4 Kxd5 43. Kb3 1-0

[Event "Hoogeveen Unive op 19th"]
[Site "Hoogeveen"]
[Date "2015.10.24"]
[Round "9"]
[White "Kouwenhoven, Derk"]
[Black "Oord, Raymon"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "1918"]
[BlackElo "1888"]
[PlyCount "88"]
[EventDate "2015.10.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 d6 6. Nbd2 0-0 7. Nf1 Na5 8. Bb3 c5 9. Bc2 Qc7 10. Ng3 d5 11. exd5 Nxd5 12. 0-0 Nc6 13. Re1 Re8 14. d4 cxd4 15. cxd4 Ncb4 16. Be4 Nf6 17. Nxe5 Nxe4 18. Rxe4 Be6 19. Bf4 Qb6 20. a3 Nd5 21. Qe2 Nf6 22. Re3 Nd5 23. Re4 Nf6 24. d5 Bxd5 25. Nd7 Nxd7 26. Rxe7 Rxe7 27. Qxe7 Be6 28. b4 Qd4 29. Re1 Qxf4 30. Ne4 Rc8 31. Nc5 Nxc5 32. bxc5 Qc7 33. Qg5 Qxc5 34. Qh4 Qxa3 35. Rd1 Qf8 36. f4 Qc5+ 37. Kh1 h6 38. h3 a5 39. Rb1 b5 40. f5 Bxf5 41. Rf1 Bg6 42. Qg4 h5 43. Qd7 a4 44. g4 Qc6+ 0-1

[Event "Hoogeveen Unive op 19th"]
[Site "Hoogeveen"]
[Date "2015.10.23"]
[Round "8"]
[White "Van Dael, Siem"]
[Black "Kouwenhoven, Derk"]
[Result "1/2-1/2"]
[ECO "A22"]
[WhiteElo "1978"]
[BlackElo "1918"]
[PlyCount "41"]
[EventDate "2015.10.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. e4 Nc6 4. d3 Bb4 5. Be2 d6 6. f4 exf4 7. Bxf4 Be6 8. Nf3 Ne7 9. Qa4+ Nc6 10. 0-0 Bd7 11. Qc2 Bc5+ 12. Kh1 Ng4 13. Nd1 Nge5 14. Be3 Nxf3 15. Bxf3 0-0 16. Qf2 Bxe3 17. Nxe3 Ne5 18. Be2 c5 19. Nf5 Bxf5 20. exf5 Qf6 21. Qf4 1/2-1/2

[Event "Hoogeveen Unive op 19th"]
[Site "Hoogeveen"]
[Date "2015.10.22"]
[Round "7"]
[White "Elgersma, Simon"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2055"]
[BlackElo "1918"]
[PlyCount "71"]
[EventDate "2015.10.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. a3 Be7 7. Nc3 b5 8. Bb3 Bg4 9. Be3 Na5 10. Ba2 c6 11. h3 Bh5 12. Nb1 0-0 13. Nbd2 Qc7 14. Nf1 Rad8 15. Ng3 Bg6 16. Qe2 d5 17. Bd2 d4 18. Nh4 Kh8 19. Nhf5 Nb7 20. Nxe7 Qxe7 21. 0-0 c5 22. f4 exf4 23. Bxf4 Nd7 24. Rae1 Rfe8 25. Qf2 Ne5 26. Nf5 Qc7 27. Qh4 Qb6 28. Ne7 f6 29. Bxe5 Rxe7 30. Bxf6 gxf6 31. Rxf6 Qa5 32. Ref1 Ree8 33. Rxg6 Rf8 34. Rxf8+ Rxf8 35. Qf6+ Rxf6 36. Rg8# 1-0

[Event "Hoogeveen Unive op 19th"]
[Site "Hoogeveen"]
[Date "2015.10.21"]
[Round "6"]
[White "Kouwenhoven, Derk"]
[Black "Losekoot, Pascal"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "1918"]
[BlackElo "2126"]
[PlyCount "44"]
[EventDate "2015.10.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nf6 5. Be3 0-0 6. Qd2 c6 7. h3 b5 8. Bd3 Nbd7 9. e5 dxe5 10. dxe5 Nd5 11. Nxd5 cxd5 12. Bxb5 Nxe5 13. Nxe5 Bxe5 14. Bc6 Rb8 15. Bh6 Bxb2 16. Rd1 Qc7 17. Bxf8 Ba6 18. c4 Bxc4 19. f4 Bf6 20. g3 Rb2 21. Qe3 Qa5+ 22. Rd2 Rxd2 0-1

[Event "Hoogeveen Unive op 19th"]
[Site "Hoogeveen"]
[Date "2015.10.20"]
[Round "5"]
[White "Sparenberg, Erik"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "C91"]
[WhiteElo "2088"]
[BlackElo "1918"]
[PlyCount "85"]
[EventDate "2015.10.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. d4 d6 9. c3 Bg4 10. Be3 Re8 11. h3 Bh5 12. Nbd2 Na5 13. Bc2 Bf8 14. d5 c5 15. b4 Nb7 16. a4 Qc7 17. axb5 axb5 18. Bd3 c4 19. Bc2 Nd7 20. g4 Bg6 21. Nf1 Nb6 22. Qd2 h5 23. Ng3 hxg4 24. hxg4 Nd7 25. Nh4 Be7 26. g5 Nf8 27. Kg2 Nh7 28. Nhf5 Qd8 29. Nxe7+ Qxe7 30. Nf5 Qd8 31. Rg1 f6 32. Rxa8 Qxa8 33. gxf6 Nxf6 34. Bg5 Kf7 35. Kf3 Bh5+ 36. Kg2 Rh8 37. Qe3 Qa6 38. Bxf6 gxf6 39. Qg3 Rh7 40. Rh1 Qa2 41. Rxh5 Rxh5 42. Qg7+ Ke8 43. Qe7# 1-0

[Event "Hoogeveen Unive op 19th"]
[Site "Hoogeveen"]
[Date "2015.10.19"]
[Round "4"]
[White "Kouwenhoven, Derk"]
[Black "Boer, Alef"]
[Result "1/2-1/2"]
[ECO "B03"]
[WhiteElo "1918"]
[BlackElo "2151"]
[PlyCount "108"]
[EventDate "2015.10.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 exd6 6. Nc3 Nc6 7. Be3 Be7 8. Bd3 0-0 9. Qf3 Nb4 10. Qe2 Nxd3+ 11. Qxd3 d5 12. cxd5 Nxd5 13. Nf3 Bg4 14. Ne5 Be6 15. 0-0 c6 16. Rae1 f6 17. Nf3 b5 18. Qe4 Bf7 19. Nh4 g6 20. Bh6 Re8 21. Qg4 Bb4 22. Bd2 Bf8 23. Rxe8 Qxe8 24. Re1 Qc8 25. Qf3 f5 26. Qh3 Nf6 27. a3 a5 28. Bg5 Bg7 29. Nf3 b4 30. Na4 Rb8 31. Ne5 Bd5 32. Nc5 Ne4 33. Bf4 Nxc5 34. dxc5 Rb5 35. Nd3 bxa3 36. bxa3 Rb3 37. Re7 Bc4 38. Qe3 Bf8 39. Re8 Rxd3 40. Qxd3 Qxe8 41. Qxc4+ Qf7 42. Qc2 Qd5 43. Be3 f4 44. Bxf4 Qxc5 45. Qb3+ Qd5 46. Qxd5+ cxd5 47. Bd2 a4 48. Bc1 Kf7 49. Kf1 Ke6 50. Ke2 Bc5 51. f3 Bd6 52. h3 Be5 53. Kd3 h5 54. g4 hxg4 1/2-1/2

[Event "Hoogeveen Unive op 19th"]
[Site "Hoogeveen"]
[Date "2015.10.19"]
[Round "3"]
[White "Paulet, Iozefina"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "C88"]
[WhiteElo "2184"]
[BlackElo "1918"]
[PlyCount "87"]
[EventDate "2015.10.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. a4 Bb7 9. c3 d5 10. exd5 Nxd5 11. d3 Bf6 12. Nbd2 Nf4 13. d4 Nd3 14. Re3 Nxc1 15. Rxc1 exd4 16. Rd3 Ne5 17. Nxe5 Bxe5 18. cxd4 Bf4 19. Rc5 Qd6 20. g3 Qg6 21. Bc2 Bd6 22. Rh5 f5 23. Re3 Bf4 24. Bb3+ Kh8 25. Re6 Rf6 26. Rxf6 gxf6 27. Bc2 Bc8 28. Qf3 Rb8 29. Qxf4 Qxh5 30. Qxc7 Ra8 31. Qc6 Ra7 32. Qxc8+ Kg7 33. Qxf5 Qxf5 34. Bxf5 bxa4 35. d5 Rb7 36. Nc4 Rb4 37. Bd3 Rb3 38. Be2 Kf7 39. Kf1 Ke7 40. Ke1 Rxb2 41. Nxb2 a3 42. Bc4 axb2 43. Ba2 Kd6 44. Kd2 1-0

[Event "Hoogeveen Unive op 19th"]
[Site "Hoogeveen"]
[Date "2015.10.18"]
[Round "2"]
[White "Kouwenhoven, Derk"]
[Black "Schroeder, Jan Christian"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "1918"]
[BlackElo "2519"]
[PlyCount "80"]
[EventDate "2015.10.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 0-0 6. 0-0 d6 7. Bb3 Na5 8. Bc2 c5 9. Nbd2 Nc6 10. Re1 h6 11. Nf1 Re8 12. Ne3 Bf8 13. a3 b5 14. b4 a5 15. Bd2 axb4 16. axb4 Rxa1 17. Qxa1 cxb4 18. Nd5 Nxd5 19. exd5 bxc3 20. Bxh6 Nb4 21. Qxc3 Nxc2 22. Bg5 f6 23. Bxf6 Qxf6 24. Qxc2 Bd7 25. Qc7 Bg4 26. Nd2 Qf4 27. Qa5 Qa4 28. Qxa4 bxa4 29. Re4 Bd7 30. Nc4 Rb8 31. f3 Rb3 32. d4 a3 33. Nxa3 Rxa3 34. dxe5 dxe5 35. Rxe5 Bc5+ 36. Kf1 Kf7 37. Re4 Ra2 38. Rf4+ Ke7 39. Re4+ Kd6 40. Rh4 Bb5+ 0-1

[Event "Hoogeveen Unive op 19th"]
[Site "Hoogeveen"]
[Date "2015.10.17"]
[Round "1"]
[White "Van der Marel, Bert"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2212"]
[BlackElo "1918"]
[PlyCount "86"]
[EventDate "2015.10.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 d6 5. d4 exd4 6. exd4 Bd7 7. Nf3 a6 8. Be2 Bf5 9. 0-0 Be7 10. d5 Nb8 11. c4 Nbd7 12. Nbd2 0-0 13. Nh4 Bg6 14. f4 Be4 15. Nhf3 Bg6 16. Nd4 h6 17. Qe1 Bh5 18. Bd3 Nc5 19. Bc2 Ng4 20. h3 Bh4 21. g3 Re8 22. hxg4 Rxe1 23. Raxe1 Bxg3 24. gxh5 Bxe1 25. Rxe1 Qh4 26. Re2 Qg3+ 27. Rg2 Qe3+ 28. Kh2 Qxf4+ 29. Kh1 f6 30. Nf5 Re8 31. Rxg7+ Kf8 32. Bc3 Re1+ 33. Rg1 Re2 34. Rg2 Re1+ 35. Rg1 Rxg1+ 36. Kxg1 Nd7 37. Kg2 Ne5 38. Nd4 Qe3 39. Nb1 Nd3 40. Ne6+ Ke7 41. Bd2 Qf2+ 42. Kh3 Ne5 43. Be4 Qe2 0-1

[Event "NED-ch U15 playoff 2nd"]
[Site "Rotterdam"]
[Date "2015.05.09"]
[Round "4"]
[White "Hilwerda, Jonas"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C36"]
[WhiteElo "1716"]
[BlackElo "1830"]
[PlyCount "102"]
[EventDate "2015.05.09"]
[EventType "tourn (blitz)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. f4 d5 3. exd5 exf4 4. Nf3 Nf6 5. Bc4 Nxd5 6. 0-0 Be7 7. Re1 Be6 8. d4 0-0 9. Kh1 Nc6 10. c3 Qd7 11. Bxd5 Bxd5 12. Bxf4 Rfe8 13. Ne5 Nxe5 14. Bxe5 Qc6 15. Qg4 f6 16. Bf4 Bd6 17. Nd2 Bxf4 18. Qxf4 Bxg2+ 19. Kg1 Bd5 20. Qg3 Rxe1+ 21. Rxe1 Re8 22. c4 Bf7 23. Rxe8+ Bxe8 24. Qe3 Bg6 25. Qe7 Qd6 26. Qe3 Kf7 27. Qb3 Qxd4+ 28. Kf1 Qxd2 29. c5+ Ke7 30. Qg3 Bd3+ 31. Kg1 Qd1+ 32. Kf2 Qd2+ 33. Kg1 Qg5 34. Qxg5 fxg5 35. Kf2 h5 36. Ke3 Bc4 37. b3 Be6 38. Ke4 Kf6 39. Kf3 g4+ 40. Kg3 g5 41. a4 Bxb3 42. a5 Kf5 43. h4 gxh4+ 44. Kxh4 Kf4 45. c6 bxc6 46. a6 g3 47. Kh3 Kf3 48. Kh4 g2 49. Kg5 g1Q+ 50. Kf5 Qg4+ 51. Ke5 Qf4# 0-1

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2015.05.09"]
[Round "9"]
[White "Janse, Alexander"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "B70"]
[WhiteElo "1972"]
[BlackElo "1830"]
[PlyCount "143"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 g6 2. e4 Bg7 3. Nc3 d6 4. d4 Nf6 5. Bg5 0-0 6. Qd2 c5 7. 0-0-0 cxd4 8. Nxd4 Nc6 9. Nxc6 bxc6 10. e5 Nd5 11. Nxd5 cxd5 12. exd6 Qb6 13. c3 exd6 14. Be3 Qa5 15. Qxd5 Bxc3 16. Qxa5 Bxa5 17. Rxd6 Bb7 18. f3 Rfe8 19. Bf2 Rac8+ 20. Kb1 Bb6 21. Bg3 Re7 22. Bb5 Rc5 23. a4 Bc8 24. Rhd1 Bc7 25. R6d2 Ba5 26. Bd6 Bxd2 27. Bxc5 Rc7 28. Bxa7 Bf5+ 29. Ka1 Be6 30. Bb6 Rc8 31. Kb1 Bf5+ 32. Ka2 Be6+ 33. Ka3 Bg5 34. Ba5 Rc2 35. Bd8 Bf4 36. Bf6 Bc7 37. b3 Rxg2 38. Kb4 Rxh2 39. a5 Ra2 40. Bd8 Bf4 41. a6 Bc8 42. Bf6 Bd2+ 43. Bc3 Bxc3+ 44. Kxc3 Bxa6 45. Rd8+ Kg7 46. Ra8 Rf2 47. Bxa6 Rxf3+ 48. Kc4 h5 49. b4 h4 50. b5 h3 51. Bb7 Rf4+ 52. Kc5 g5 53. b6 g4 54. Bd5 g3 55. b7 g2 56. b8Q g1Q+ 57. Kc6 Qg6+ 58. Kc5 Qc2+ 59. Kd6 Rf6+ 60. Kd7 Qf5+ 61. Ke7 Re6+ 62. Bxe6 Qxe6+ 63. Kd8 h2 64. Qg3+ Kf6 65. Qh4+ Kg6 66. Qg3+ Kf6 67. Qf2+ Kg6 68. Qg2+ Kf6 69. Qf3+ Kg6 70. Qg3+ Kf6 71. Ra1 Qb6+ 72. Ke8 0-1

[Event "NED-ch U15 playoff 2nd"]
[Site "Rotterdam"]
[Date "2015.05.09"]
[Round "2"]
[White "Kokje, Joris"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "E87"]
[WhiteElo "1960"]
[BlackElo "1830"]
[PlyCount "72"]
[EventDate "2015.05.09"]
[EventType "tourn (blitz)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 Nh5 8. Nge2 f5 9. Qd2 Nd7 10. 0-0-0 a5 11. g4 fxg4 12. fxg4 Nhf6 13. h3 Nc5 14. Bg2 h5 15. gxh5 Nxh5 16. Rdf1 Bd7 17. Bf3 Qf6 18. Kc2 Nf4 19. Nxf4 exf4 20. Bf2 a4 21. Re1 Rfb8 22. e5 Bf5+ 23. Kd1 Qd8 24. Bxc5 dxc5 25. Qxf4 a3 26. b3 c6 27. Ke2 b5 28. Kf2 bxc4 29. Qxc4 Rb4 30. Qxc5 Qh4+ 31. Kg2 Bh6 32. dxc6 Rd8 33. Bd5+ Kh7 34. Ne4 Bxe4+ 35. Bxe4 Rd2+ 36. Kf3 Qh5+ 0-1

[Event "NED-ch U15 playoff 2nd"]
[Site "Rotterdam"]
[Date "2015.05.09"]
[Round "5"]
[White "Kouwenhoven, Derk"]
[Black "Kokje, Joris"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "1830"]
[BlackElo "1960"]
[PlyCount "78"]
[EventDate "2015.05.09"]
[EventType "tourn (blitz)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be3 Ng4 7. Bc4 Nxe3 8. fxe3 Ne5 9. Bb3 e6 10. 0-0 Be7 11. Nf3 Nxf3+ 12. gxf3 Bd7 13. Qd2 b5 14. Rad1 Qb6 15. Kh1 0-0 16. e5 d5 17. Rg1 Bc6 18. Qg2 g6 19. Rde1 Qb7 20. Nd1 a5 21. c3 Qc7 22. Qg3 Rfe8 23. Nf2 b4 24. cxb4 axb4 25. Ng4 h5 26. Nf6+ Bxf6 27. exf6 Qxg3 28. Rxg3 Ba4 29. Reg1 Bxb3 30. axb3 Rec8 31. e4 d4 32. Rd1 Rd8 33. Rg2 Ra7 34. e5 Rad7 35. Rgd2 Rd5 36. f4 d3 37. Kg2 g5 38. Kf3 g4+ 39. Ke3 Kh7 0-1

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2015.05.08"]
[Round "8"]
[White "Kouwenhoven, Derk"]
[Black "Loutragotis, Paraskevas Pantelei"]
[Result "1-0"]
[ECO "B97"]
[WhiteElo "1830"]
[BlackElo "1562"]
[PlyCount "45"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Rb1 Qa3 10. e5 dxe5 11. fxe5 Bb4 12. Rxb4 Qxb4 13. exf6 0-0 14. fxg7 Re8 15. Bd3 Nd7 16. Rf1 Ne5 17. Bf6 Ng6 18. Bxg6 fxg6 19. Be5 Bd7 20. Ne4 Qxd2+ 21. Kxd2 Red8 22. Nf6+ Kxg7 23. Nxd7+ 1-0

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2015.05.07"]
[Round "7"]
[White "Hilwerda, Jonas"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "C36"]
[WhiteElo "1716"]
[BlackElo "1830"]
[PlyCount "135"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. f4 d5 3. exd5 exf4 4. Nf3 Nf6 5. Bc4 Nxd5 6. 0-0 Be7 7. d4 0-0 8. Bxd5 Qxd5 9. Bxf4 c6 10. Nc3 Qh5 11. Re1 Bf6 12. Ne4 Nd7 13. Bd6 Rd8 14. Nxf6+ gxf6 15. Qd2 Nf8 16. Be7 Rd5 17. Bxf6 Rf5 18. Re5 Qg4 19. h3 Qg3 20. Qg5+ Rxg5 21. Rxg5+ Qxg5 22. Bxg5 Bf5 23. c3 Re8 24. Re1 Rxe1+ 25. Nxe1 Kg7 26. Nf3 Nd7 27. Kf2 Bb1 28. a3 b5 29. g3 f6 30. Bf4 Nb6 31. Ke2 Nc4 32. Bc1 Be4 33. b3 Na5 34. b4 Nc4 35. Ne1 f5 36. Nf3 h6 37. Ne5 h5 38. Nxc4 bxc4 39. Ke3 Kf6 40. Kf4 Bg2 41. g4 h4 42. Be3 Bxh3 43. g5+ Kg6 44. Bf2 Kh5 45. d5 cxd5 46. Bxa7 Bg2 47. b5 h3 48. Kg3 f4+ 49. Kh2 f3 50. Bf2 d4 51. b6 d3 52. b7 d2 53. b8Q d1Q 54. Qh8+ Kg4 55. Qh4+ Kf5 56. Qxc4 Qh1+ 57. Kg3 Bf1 58. Qf4+ Ke6 59. Qf6+ Kd5 60. Qd4+ Ke6 61. Qb6+ Kd5 62. Qc5+ Ke6 63. Qc6+ Kf5 64. Qd5+ Kg6 65. Qe6+ Kg7 66. Qf6+ Kg8 67. Qg6+ Kf8 68. Bc5# 1-0

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2015.05.06"]
[Round "6"]
[White "Kouwenhoven, Derk"]
[Black "Van Roon, Sjoerd"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "1830"]
[PlyCount "77"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. h3 Be6 7. Bxe6 fxe6 8. Bg5 0-0 9. Nbd2 d5 10. Qe2 Qd6 11. 0-0 Nh5 12. b4 Ng3 13. Qe1 Bb6 14. a4 Nxf1 15. Nxf1 a6 16. N1h2 d4 17. Rb1 a5 18. b5 Nb8 19. c4 Nd7 20. Ng4 Qa3 21. Nfxe5 Nxe5 22. Nxe5 Qxa4 23. Qe2 Qa3 24. Qg4 Qd6 25. Bf4 a4 26. Ng6 e5 27. Nxf8 Rxf8 28. Bd2 a3 29. Ra1 Ra8 30. Qd1 Ba5 31. Qb3 Qf6 32. Bxa5 Rxa5 33. Rxa3 Qh6 34. c5+ Kf8 35. Ra2 Rxa2 36. Qxa2 Qc1+ 37. Kh2 Ke7 38. Qd5 Qf4+ 39. Kg1 1/2-1/2

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2015.05.05"]
[Round "5"]
[White "Nguyen, Kevin"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C86"]
[WhiteElo "2090"]
[BlackElo "1830"]
[PlyCount "106"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Qe2 b5 7. Bb3 0-0 8. c3 d6 9. Rd1 Na5 10. Bc2 c5 11. d4 Qc7 12. d5 Bd7 13. Nbd2 Rab8 14. b3 Nh5 15. Nf1 Bf6 16. Rb1 g6 17. g3 Bg7 18. Nh4 Qc8 19. Ne3 Bh3 20. Nhf5 Qd8 21. Nxg7 Nxg7 22. Ng2 f5 23. Bh6 f4 24. Rd3 c4 25. Rf3 Bg4 26. gxf4 Bxf3 27. Qxf3 exf4 28. Qg4 Qf6 29. Nxf4 Qxc3 30. Bd1 Rf7 31. Bf3 cxb3 32. axb3 Nxb3 33. Bxg7 Kxg7 34. Ne6+ Kg8 35. Ng5 Rbf8 36. Nxf7 Rxf7 37. Bg2 Qc2 38. Rf1 a5 39. Qe6 Qc5 40. Bh3 Kf8 41. Kh1 Nd4 42. Qg4 a4 43. Qh4 a3 44. Qd8+ Kg7 45. Be6 Nxe6 46. dxe6 Qc4 47. Re1 Qxe6 48. Qb6 Qe5 49. Qa5 Qb2 50. f4 b4 51. e5 dxe5 52. fxe5 Qd2 53. Rg1 Rf2 0-1

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2015.05.04"]
[Round "4"]
[White "Kouwenhoven, Derk"]
[Black "Kanters, Cor"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "1830"]
[BlackElo "1859"]
[PlyCount "99"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 Be7 10. Bxf6 Bxf6 11. Nc4 Be7 12. Nd5 Be6 13. Nxe7 Kxe7 14. Qd2 Qc7 15. Qg5+ Kf8 16. Ne3 Qb6 17. 0-0-0 Qc7 18. Bc4 Nd4 19. Bxe6 Nxe6 20. Qg3 Nd4 21. Rd2 Qa5 22. Nd5 Qxa2 23. Rxd4 Qa1+ 24. Kd2 Qxh1 25. Nc7 Rd8 26. Qh4 Rd7 27. Rc4 Qf1 28. Ne6+ fxe6 29. Rc8+ Kf7 30. Qh5+ g6 31. Qf3+ Kg7 32. Rxh8 Rf7 33. Rxh7+ Kxh7 34. Qxf7+ Kh8 35. g3 Qc4 36. Qxg6 Qd4+ 37. Ke1 Qxb2 38. Qh6+ Kg8 39. Qxe6+ Kh8 40. Qxd6 Qb1+ 41. Kd2 Qb2 42. h4 Qb5 43. h5 Qa5+ 44. Ke2 Qb5+ 45. Kf3 Qe8 46. Qh6+ Kg8 47. Qg6+ Qxg6 48. hxg6 Kg7 49. Ke3 Kxg6 50. f4 0-1

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2015.05.03"]
[Round "2"]
[White "Halfhide, Sebastian"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C88"]
[WhiteElo "2136"]
[BlackElo "1830"]
[PlyCount "112"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. a4 Bb7 9. d3 d6 10. Nc3 b4 11. Ne2 Na5 12. Ba2 c5 13. Ng3 Rc8 14. Nd2 Qc7 15. Qe2 Nc6 16. c3 Rb8 17. Nf5 Bc8 18. Qf3 bxc3 19. bxc3 Bxf5 20. exf5 Rfd8 21. Ne4 Na5 22. Be3 c4 23. d4 d5 24. Nxf6+ Bxf6 25. Qg4 Nb3 26. Rad1 Re8 27. Bg5 Bxg5 28. Qxg5 f6 29. Qg3 Rbd8 30. dxe5 Rxe5 31. Rxe5 Qxe5 32. Qxe5 fxe5 33. Bxb3 cxb3 34. Kf1 Kf7 35. Rb1 Rb8 36. h4 Kf6 37. g4 e4 38. Ke2 Ke5 39. Ke3 h5 40. f3 exf3 41. Kxf3 hxg4+ 42. Kxg4 d4 43. cxd4+ Kxd4 44. Kg5 Kc3 45. Kg6 Rb7 46. Rh1 b2 47. h5 Kc2 48. Rh2+ Kb3 49. Rh1 Ka2 50. h6 gxh6 51. f6 b1Q+ 52. Rxb1 Kxb1 53. Kxh6 Kb2 54. Kg6 Kb3 55. a5 Kb4 56. f7 Rxf7 0-1

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2015.05.03"]
[Round "3"]
[White "Kouwenhoven, Derk"]
[Black "Vrolijk, Liam"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "1830"]
[BlackElo "2045"]
[PlyCount "104"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. 0-0 Nc6 8. Re1 Nf6 9. Nb3 Be7 10. Nbxd4 Nxd4 11. Nxd4 a6 12. Bg5 0-0 13. Bb3 Qc5 14. Be3 Qc7 15. Qe2 Bd6 16. h3 e5 17. Nf3 Qe7 18. Bg5 Re8 19. Nd2 Bf5 20. Nc4 Rad8 21. Nxd6 Rxd6 22. Rad1 h6 23. Bh4 e4 24. c3 Bg6 25. Rxd6 Qxd6 26. Rd1 Qb6 27. Rd4 Nh5 28. Qd2 Bf5 29. g4 Qg6 30. Rd6 Nf6 31. Qf4 Be6 32. Bc2 Nd5 33. Qxe4 Qxe4 34. Bxe4 Nf4 35. Bxb7 Nxh3+ 36. Kh2 Bxg4 37. Bxa6 g5 38. Bg3 h5 39. Bf1 Nf4 40. Bxf4 gxf4 41. b4 Re1 42. Bc4 Bf3 43. Rg6+ Kh8 44. Rg1 Re8 45. Bxf7 Re2 46. Rf1 Rc2 47. a4 Rxc3 48. Ra1 Rc2 49. Kg1 Rc7 50. Bxh5 Bxh5 51. b5 Bf3 52. Kf1 Rh7 0-1

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2015.05.02"]
[Round "1"]
[White "Sealy, Alec"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C59"]
[BlackElo "1830"]
[PlyCount "50"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Qd4 11. Ng4 Bxg4 12. Bxg4 e3 13. f3 Nxg4 14. fxg4 0-0-0 15. Qf3 exd2+ 16. Nxd2 Bc5 17. c3 Rhe8+ 18. Kf1 Qe5 19. Qf5+ Qxf5+ 20. gxf5 Nc4 21. b4 Bb6 22. a4 Nxd2+ 23. Bxd2 Rxd2 24. a5 Rf2+ 25. Kg1 Ra2+ 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.31"]
[Round "7"]
[White "Kouwenhoven, Derk"]
[Black "Kroon, Joppe"]
[Result "1-0"]
[ECO "C59"]
[PlyCount "73"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nh3 Bd6 10. d3 0-0 11. Nc3 Qc7 12. Bd2 Nb7 13. Bf3 Nd8 14. Nb5 Qe7 15. Nxd6 Qxd6 16. 0-0 g5 17. Qc1 Nh7 18. Bh5 g4 19. Bxh6 Re8 20. Kh1 gxh3 21. gxh3 Qd5+ 22. f3 Bf5 23. Rg1+ Bg6 24. Qf1 Re6 25. Bg4 Rd6 26. h4 Kh8 27. h5 Nb7 28. hxg6 Rxg6 29. Qh3 Rag8 30. Bf5 Rxg1+ 31. Rxg1 Rxg1+ 32. Kxg1 Qc5+ 33. Kh1 Qxc2 34. Qg3 Qd1+ 35. Kg2 Qc2+ 36. Kh3 Qxb2 37. Qg7# 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.31"]
[Round "9"]
[White "Kouwenhoven, Derk"]
[Black "Van Klaveren, Justus"]
[Result "1-0"]
[ECO "C19"]
[PlyCount "75"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Bd3 Nbc6 8. Nf3 Qb6 9. Be3 c4 10. Be2 Ng6 11. 0-0 0-0 12. h4 h6 13. g4 f5 14. g5 Kh7 15. Qc1 Rg8 16. h5 Nf8 17. g6+ Nxg6 18. hxg6+ Kxg6 19. Nh4+ Kh7 20. Bh5 g5 21. Bg6+ Kg7 22. Bxg5 hxg5 23. Qxg5 Qd8 24. Qxd8 Nxd8 25. Kh2 Rh8 26. Kh3 Rxh4+ 27. Kxh4 Kxg6 28. Rg1+ Kf7 29. Rg2 b6 30. Rag1 Bb7 31. Rg8 Ke7 32. R8g7+ Ke8 33. Rxb7 Nxb7 34. Rg8+ Kd7 35. Rxa8 a5 36. Kg5 Kc7 37. Kf6 Nd8 38. Rxd8 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.31"]
[Round "8"]
[White "Van Randtwijk, Mick"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "1665"]
[PlyCount "67"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bc5 7. 0-0 d6 8. c3 Bg4 9. h3 Bxf3 10. Qxf3 Ne7 11. Bg5 Ng6 12. Bd5 Rb8 13. Bc6+ Kf8 14. b4 Bb6 15. a4 h6 16. Bxf6 Qxf6 17. Qxf6 gxf6 18. axb5 axb5 19. Bxb5 Nf4 20. Kh2 Bxf2 21. Bc4 Bb6 22. g3 Nh5 23. Rf5 Ng7 24. Rxf6 Ke8 25. Rxf7 Rf8 26. Rxf8+ Kxf8 27. Nd2 Ke7 28. Rf1 Rf8 29. Kg2 Rf6 30. Rxf6 Kxf6 31. Kf3 Bg1 32. Nf1 Kg5 33. h4+ Kh5 34. Bf7# 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.30"]
[Round "4"]
[White "Kouwenhoven, Derk"]
[Black "Geelhoed, Thijs"]
[Result "0-1"]
[ECO "C52"]
[PlyCount "88"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 exd4 7. Qb3 Qf6 8. Bg5 Qg6 9. 0-0 dxc3 10. Nxc3 Bxc3 11. Qxc3 Nf6 12. Ne5 Qxg5 13. Nxf7 Qa5 14. Qg3 Nh5 15. Qh4 Rf8 16. e5 g6 17. Rfe1 Rxf7 18. Bxf7+ Kxf7 19. g4 Nxe5 20. Qh3 Nf6 21. g5 d6 22. Qb3+ Nd5 23. f4 Nc6 24. Rad1 Qb6+ 25. Qxb6 Nxb6 26. Rd2 Bd7 27. Rd3 Re8 28. Rf1 Be6 29. Rdf3 Bxa2 30. f5 Ne5 31. Rh3 Rh8 32. fxg6+ Kxg6 33. Rf2 Bc4 34. Rh4 Nd5 35. Re4 Re8 36. Rh4 Be2 37. Rh6+ Kxg5 38. Rxh7 Nf3+ 39. Kh1 a5 40. h4+ Kg6 41. Rd7 a4 42. Rg2+ Kh6 43. Rdg7 Nxh4 44. Rg1 Re3 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.30"]
[Round "6"]
[White "Kouwenhoven, Derk"]
[Black "Nies, Levi"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "37"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Bb4 7. Bc4 Bxc3+ 8. bxc3 0-0 9. Ba3 Re8 10. Qd3 a6 11. Nd2 b5 12. Bb3 Bb7 13. 0-0 Ne7 14. f4 Qc7 15. fxe5 Qxe5 16. Bd6 Qg5 17. Nf3 Qg6 18. Ne5 Qh5 19. Bxf7+ 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.30"]
[Round "5"]
[White "Kudlicka, Marek"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "C59"]
[PlyCount "124"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Qd4 11. Ng4 Bxg4 12. Bxg4 e3 13. Bf3 exf2+ 14. Kf1 Be7 15. Qe2 0-0 16. Qxf2 Qxf2+ 17. Kxf2 Bc5+ 18. Kf1 g5 19. Nc3 g4 20. Be2 Rfe8 21. d3 h5 22. Bg5 Nd5 23. Nxd5 cxd5 24. Rb1 Re5 25. Bf4 Rf5 26. g3 Bd6 27. Kg2 Bxf4 28. gxf4 Rxf4 29. Rhf1 Rxf1 30. Rxf1 Re8 31. Bd1 Re5 32. c3 Kg7 33. d4 Re6 34. Rf5 Nc4 35. Rxh5 Ne3+ 36. Kg3 Nxd1 37. Rxd5 Kg6 38. Ra5 f5 39. Rxa7 Re3+ 40. Kg2 f4 41. Ra6+ Kh5 42. Ra5+ Kh4 43. Re5 f3+ 44. Kg1 g3 45. hxg3+ Kxg3 46. Kf1 Rxe5 47. dxe5 f2 48. e6 Ne3+ 49. Ke2 f1Q+ 50. Kxe3 Qe1+ 51. Kd3 Qxe6 52. b3 Qa6+ 53. Kd4 Qxa2 54. b4 Qb3 55. Kd3 Kf4 56. Kd4 Kf5 57. c4 Qxb4 58. Kd5 Qb3 59. Kc5 Ke6 60. Kd4 Qb4 61. Kd3 Kd6 62. Kd4 Qa4 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.29"]
[Round "2"]
[White "Kouwenhoven, Derk"]
[Black "Pham, Khoi"]
[Result "1-0"]
[ECO "C57"]
[PlyCount "45"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Nxf7 Bxf2+ 6. Kxf2 Nxe4+ 7. Kg1 Qh4 8. g3 Qf6 9. Qe2 Nd6 10. Nxh8 Nd4 11. Qh5+ g6 12. Qxh7 Nxc4 13. Qg8+ Qf8 14. Qxc4 Nf3+ 15. Kg2 Nd4 16. Rf1 Qxh8 17. Qf7+ Kd8 18. d3 Ne6 19. Qf6+ Qxf6 20. Rxf6 b6 21. Be3 Nc5 22. Bxc5 bxc5 23. Nc3 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.29"]
[Round "1"]
[White "Kroetkov, Ivan"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "E61"]
[PlyCount "62"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 0-0 5. Bf4 d6 6. e3 c5 7. Qc2 cxd4 8. exd4 Re8 9. Rd1 Nc6 10. Be2 Bf5 11. Bd3 Nb4 12. Qe2 Bxd3 13. Rxd3 Nxd3+ 14. Qxd3 e5 15. dxe5 dxe5 16. Qxd8 Raxd8 17. Be3 a6 18. 0-0 Rc8 19. Nd2 Ng4 20. h3 Nxe3 21. fxe3 f5 22. e4 Bh6 23. Nb3 fxe4 24. Nxe4 Rf8 25. Re1 Rxc4 26. Na5 Rc2 27. Nxb7 Rxb2 28. Nbc5 Bd2 29. Re2 Rb1+ 30. Kh2 Bh6 31. Ne6 Rff1 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.29"]
[Round "3"]
[White "Schoppen, Casper"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "1901"]
[PlyCount "83"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 d6 5. Bg2 0-0 6. 0-0 c6 7. Nc3 Bd7 8. e4 Na6 9. h3 c5 10. e5 Ne8 11. dxc5 dxe5 12. Re1 Bc6 13. Bg5 f6 14. Qxd8 Rxd8 15. Be3 Nec7 16. Rab1 Nb4 17. Re2 Bd7 18. a3 Nc6 19. Rd2 Bf5 20. Rbd1 Rxd2 21. Nxd2 e6 22. Nde4 Rd8 23. Rxd8+ Nxd8 24. g4 Bxe4 25. Nxe4 f5 26. Nd6 f4 27. Bc1 b6 28. cxb6 axb6 29. b4 Bf8 30. Nc8 b5 31. c5 Nf7 32. Na7 Ng5 33. h4 f3 34. Bxg5 fxg2 35. Bd8 Nd5 36. c6 e4 37. c7 e3 38. fxe3 Nb6 39. c8Q Nxc8 40. Nxc8 Bg7 41. Nd6 Bb2 42. Nxb5 1-0

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2014.05.04"]
[Round "9"]
[White "Kouwenhoven, Derk"]
[Black "Kaiser, Jakob"]
[Result "1/2-1/2"]
[ECO "C18"]
[PlyCount "47"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Ra2 0-0 9. Nf3 Nf5 10. Bd3 Nc6 11. Qh3 c4 12. Be2 f6 13. g4 Nfe7 14. Bf4 Ng6 15. Bg3 fxe5 16. dxe5 Ncxe5 17. Nxe5 Nxe5 18. Qh5 Qb6 19. Bxe5 Qb1+ 20. Kd2 Qxh1 21. Qg5 Rf7 22. Qd8+ Rf8 23. Qg5 g6 24. Qe7 1/2-1/2

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2014.05.03"]
[Round "8"]
[White "Kanters, Cor"]
[Black "Kouwenhoven, Derk"]
[Result "0-1"]
[ECO "E90"]
[PlyCount "86"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. c4 d6 5. Nc3 0-0 6. e4 c5 7. d5 h6 8. Bd2 e6 9. Be2 Re8 10. 0-0 exd5 11. exd5 Bf5 12. Re1 Na6 13. a3 Qd7 14. Nh4 g5 15. Nxf5 Qxf5 16. Qb3 Re7 17. Nb5 Ne4 18. Qc2 Qxf2+ 19. Kh1 Nxd2 20. Qxd2 Rae8 21. Rf1 Qxe2 22. Qxe2 Rxe2 23. Nxd6 R8e7 24. Nf5 Rd7 25. Rae1 Rxe1 26. Rxe1 Kf8 27. d6 Bxb2 28. Rd1 Bd4 29. Rf1 f6 30. g3 Nb8 31. Kg2 Nc6 32. Kh3 Be5 33. Kg4 Nd4 34. Kh5 Nxf5 35. Rxf5 Rxd6 36. Kxh6 g4 37. Kg6 a6 38. Rh5 b5 39. cxb5 axb5 40. Rh8+ Ke7 41. Rh7+ Kd8 42. Rb7 c4 43. Rxb5 Rc6 0-1

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2014.05.02"]
[Round "7"]
[White "Kouwenhoven, Derk"]
[Black "Mensing, Andrew"]
[Result "1/2-1/2"]
[ECO "B42"]
[PlyCount "106"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. c4 Bc5 7. Nb3 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 Nc6 10. 0-0 0-0 11. Nc3 Qc7 12. f4 d6 13. Rae1 Rd8 14. Rf3 e5 15. f5 Qb6+ 16. Kh1 Nd4 17. Nxd4 Qxd4 18. Ne2 Qb6 19. Ref1 Qc6 20. Rg3 Ne8 21. Qh6 Kh8 22. Qh5 Nf6 23. Qxf7 Rg8 24. Rh3 Bd7 25. Qg6 Be8 26. Qg5 b5 27. Rc1 b4 28. g4 Rf8 29. Qh4 g6 30. Ng3 Ra7 31. Qh6 Rg8 32. Qg5 d5 33. cxd5 Qd6 34. Rc8 gxf5 35. Qh6 Nxe4 36. Nxe4 Qxh6 37. Rxh6 fxe4 38. Bxe4 Rag7 39. g5 Bd7 40. Rc7 Bf5 41. Rc4 Rxg5 42. h4 Bxe4+ 43. Rxe4 Rg1+ 44. Kh2 R1g2+ 45. Kh1 Rxb2 46. Rxa6 Rc8 47. Re1 Rc4 48. Rd1 Rxh4+ 49. Kg1 Rg4+ 50. Kh1 Rh4+ 51. Kg1 Rg4+ 52. Kh1 Rh4+ 53. Kg1 Rbh2 1/2-1/2

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2014.05.01"]
[Round "6"]
[White "Van Randtwijk, Mick"]
[Black "Kouwenhoven, Derk"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "1669"]
[PlyCount "65"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 Bc5 6. 0-0 b5 7. Bb3 d6 8. Nc3 Bg4 9. h3 Bh5 10. Be3 Bb6 11. Nd5 Nxd5 12. Bxd5 Qd7 13. Nxe5 Nxe5 14. Qxh5 Rc8 15. Qe2 0-0 16. d4 c6 17. Bb3 Ng6 18. c3 Rfe8 19. f3 Qe7 20. Kh1 d5 21. e5 Nxe5 22. Bg1 Ng6 23. Qxe7 Rxe7 24. Rae1 Rce8 25. Bf2 Nf4 26. Bc2 g6 27. Rxe7 Rxe7 28. Re1 Rxe1+ 29. Bxe1 Nh5 30. Bd2 Bc7 31. g4 Nf4 32. h4 Kg7 33. Kg1 1/2-1/2

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2014.04.30"]
[Round "5"]
[White "Kouwenhoven, Derk"]
[Black "Schelleman, Niels"]
[Result "1/2-1/2"]
[ECO "B01"]
[PlyCount "92"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nc3 e6 6. Nf3 c5 7. Bg5 f6 8. Be3 cxd4 9. Qxd4 Qxd4 10. Nxd4 Bc5 11. Ndb5 Bxe3 12. Nc7+ Kd8 13. Nxa8 Bxf2+ 14. Kxf2 Nxa8 15. Rd1+ Ke7 16. Be2 Nc6 17. Bf3 Ne5 18. b3 Nc7 19. Rd2 Na6 20. Nb5 Nc6 21. Bxc6 bxc6 22. Nd4 Bd7 23. Rhd1 Nc5 24. Rd3 Nxd3+ 25. Rxd3 Rd8 26. b4 a6 27. Ra3 e5 28. Nb3 Bc8 29. Ke3 g6 30. Nc5 Rd4 31. Nxa6 Bxa6 32. Rxa6 Rxc4 33. Rb6 Kd6 34. a4 Rc3+ 35. Kd2 Ra3 36. a5 Kc7 37. Ke2 Ra4 38. g4 f5 39. gxf5 gxf5 40. h4 c5 41. bxc5 Rxa5 42. Rf6 Rxc5 43. Rxf5 Rc2+ 44. Kd3 Rh2 45. Rf7+ Kd6 46. Rxh7 Kd5 1/2-1/2

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2014.04.29"]
[Round "4"]
[White "Kokje, Joris"]
[Black "Kouwenhoven, Derk"]
[Result "1-0"]
[ECO "E90"]
[PlyCount "145"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Nf3 Nbd7 7. Bd3 Nb6 8. 0-0 c5 9. d5 e6 10. Re1 e5 11. a4 a6 12. Rb1 a5 13. Nb5 Ne8 14. Bg5 f6 15. Bh4 h5 16. b3 Bh6 17. Nh2 Kg7 18. f3 Qd7 19. Nf1 Qf7 20. Qc2 Kh8 21. Bf2 g5 22. Be3 Qg6 23. Ng3 Rg8 24. Nf5 Bxf5 25. exf5 Qh7 26. g4 h4 27. Bd2 Nc8 28. Re4 b6 29. Rbe1 Ne7 30. Bc1 Rd8 31. Qf2 Bf8 32. R4e2 Rd7 33. Nc3 Qh6 34. Nd1 Qh7 35. Ne3 Qh6 36. Ng2 Rg7 37. Kh2 Rh7 38. Re4 Nc7 39. Qb2 Rg7 40. f4 gxf4 41. Nxf4 exf4 42. Bxf4 Qh7 43. Qxf6 Kg8 44. Bxd6 Rf7 45. Qg5+ Rg7 46. Qf6 Rf7 47. Qe5 Nc6 48. Qc3 Bxd6+ 49. Kg2 Ne5 50. Rxe5 Bxe5 51. Qxe5 Rfe7 52. f6 Rxe5 53. Bxh7+ Kxh7 54. Rxe5 Kg8 55. Kf3 Rh7 56. Kf4 Kf8 57. g5 Rf7 58. Kg4 Rh7 59. g6 Rd7 60. Kxh4 Ne8 61. Kg5 Nd6 62. h4 Kg8 63. h5 Kf8 64. h6 Kg8 65. h7+ Kh8 66. Kh6 Rxh7+ 67. Kg5 Rd7 68. Re6 Kg8 69. Kf4 Kf8 70. Ke5 Nb7 71. f7 Rd8 72. Kf6 Nd6 73. g7# 1-0

[Event "NED-ch U15"]
[Site "Rotterdam"]
[Date "2014.04.28"]
[Round "3"]
[White "Kouwenhoven, Derk"]
[Black "Bosma, Jan"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "100"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. f4 0-0 6. Be2 c6 7. Nf3 d5 8. e5 Ne8 9. 0-0 Bf5 10. Nd2 h5 11. h3 Qd7 12. Nb3 b6 13. Bf3 a5 14. Na4 Qb7 15. g4 hxg4 16. hxg4 Bd7 17. Bg2 f5 18. g5 Kf7 19. Rc1 e6 20. Rf3 Rh8 21. Rh3 Rxh3 22. Bxh3 c5 23. Nc3 c4 24. Nd2 b5 25. Bg2 b4 26. Ncb1 Bb5 27. c3 Nc6 28. b3 Qa6 29. cxb4 axb4 30. bxc4 dxc4 31. d5 c3 32. Nb3 Rd8 33. dxe6+ Kg8 34. Qc2 Bd3 35. Qf2 c2 36. N1d2 Ne7 37. Bc5 Qxe6 38. Bxb4 Nd5 39. Qd4 Be4 40. Nxe4 fxe4 41. Ba5 Rc8 42. Nc5 Qc6 43. Rxc2 Bf8 44. Nd7 Qxc2 45. Qxd5+ Kg7 46. Nxf8 Qc1+ 47. Bf1 Qe3+ 48. Kh1 Qf3+ 49. Kg1 Qg4+ 50. Kh1 Qf3+ 1/2-1/2

