[Event "NED-ch U20"]
[Site "Nijmegen"]
[Date "2002.05.04"]
[Round "9.3"]
[White "Ruygrok, Dennis"]
[Black "Smeets, Jan"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "2327"]
[PlyCount "66"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 e6 4. Bg2 Nge7 5. Nge2 Nd4 6. d3 Nec6 7. 0-0 d6 8. Be3 Be7 9. f4 0-0 10. g4 b5 11. Qd2 b4 12. Nd1 Nxe2+ 13. Qxe2 Rb8 14. Qd2 a5 15. g5 d5 16. exd5 exd5 17. f5 f6 18. g6 hxg6 19. c4 bxc3 20. Nxc3 Nb4 21. a3 d4 22. axb4 dxc3 23. Qxc3 gxf5 24. bxc5 Be6 25. Bf4 Rb3 26. Qxa5 Qd4+ 27. Kh1 Bd5 28. Rad1 Bxg2+ 29. Kxg2 Qd5+ 30. Kg3 g5 31. Qc7 Rb7 32. Qa5 gxf4+ 33. Kh3 Bd8 0-1

[Event "NED-ch U20"]
[Site "Nijmegen"]
[Date "2002.05.03"]
[Round "7.5"]
[White "Muhren, Willem"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C26"]
[WhiteElo "2209"]
[PlyCount "64"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 Bc5 5. Bg2 d6 6. d3 a6 7. h3 0-0 8. 0-0 Re8 9. Nh4 Be6 10. Nd5 h6 11. Be3 Bxd5 12. exd5 Ne7 13. c4 c6 14. dxc6 Nxc6 15. Nf5 Bxe3 16. fxe3 Kh7 17. Qb3 Qd7 18. Rf2 Rad8 19. Raf1 Ng8 20. c5 d5 21. Nd6 Nf6 22. Nxe8 Rxe8 23. Kh2 e4 24. dxe4 dxe4 25. Qc2 Qe6 26. a3 Qe5 27. Rf5 Qe6 28. R5f4 Qe5 29. Rd1 Nh5 30. Qxe4+ f5 31. Qxf5+ Qxf5 32. Rxf5 Nf6 1-0

[Event "NED-ch U20"]
[Site "Nijmegen"]
[Date "2002.05.03"]
[Round "8.6"]
[White "Van Dongen, Cor"]
[Black "Ruygrok, Dennis"]
[Result "0-1"]
[ECO "D55"]
[WhiteElo "2239"]
[PlyCount "74"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. Bg5 Be7 5. e3 0-0 6. Nf3 h6 7. Bxf6 Bxf6 8. cxd5 exd5 9. b4 Bg4 10. Be2 c6 11. 0-0 Re8 12. Qb3 a6 13. Na4 Nd7 14. Nc5 Qc7 15. Rac1 Nxc5 16. Rxc5 Qd6 17. Rfc1 Bd8 18. R5c2 Bc7 19. g3 h5 20. a4 Qf6 21. Ne1 Bxe2 22. Rxe2 h4 23. b5 axb5 24. axb5 Ba5 25. bxc6 bxc6 26. Qd1 Bxe1 27. Qxe1 Re6 28. Rec2 Qf3 29. Qf1 hxg3 30. hxg3 Rh6 31. Qg2 Qf5 32. Rd2 g5 33. g4 Qe6 34. Re2 Kg7 35. Rec2 Rh4 36. f3 Qxe3+ 37. Qf2 Qf4 0-1

[Event "NED-ch U20"]
[Site "Nijmegen"]
[Date "2002.05.02"]
[Round "6.7"]
[White "Ruygrok, Dennis"]
[Black "Bensdorp, Laura"]
[Result "1-0"]
[ECO "B25"]
[PlyCount "117"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. Qd2 b5 8. f4 b4 9. Nd1 e6 10. Nf3 Nge7 11. 0-0 0-0 12. c3 bxc3 13. bxc3 Qa5 14. Rc1 d5 15. e5 Ba6 16. Ne1 Rfd8 17. Qf2 c4 18. d4 Bb5 19. Qd2 Ba4 20. Nf2 Rb7 21. Nf3 Rdb8 22. g4 Rb2 23. Qe1 Rxa2 24. Nh4 Rbb2 25. Bf3 Bc2 26. f5 exf5 27. Bg5 Be4 28. Nxe4 dxe4 29. gxf5 exf3 30. f6 f2+ 31. Rxf2 Rxf2 32. Rb1 Qd5 33. fxe7 Qd7 34. e6 fxe6 35. Rb7 Rfe2 36. Qxe2 Rxe2 37. Rxd7 Nxe7 38. Bxe7 Rc2 39. Bb4 Bh6 40. Rxa7 Be3+ 41. Kf1 Rf2+ 42. Ke1 Rxh2 43. Nf3 Rb2 44. Ne5 Bxd4 45. Ra8+ Kg7 46. Bf8+ Kf6 47. cxd4 c3 48. Rc8 Rd2 49. Nf3 Rc2 50. Kd1 Rf2 51. Rxc3 Kf5 52. Bh6 Ke4 53. Re3+ Kd5 54. Ke1 Ra2 55. Re5+ Kd6 56. Ng5 Ra4 57. Bf8+ Kd7 58. Bc5 Ra6 59. Nxh7 1-0

[Event "NED-ch U20"]
[Site "Nijmegen"]
[Date "2002.05.01"]
[Round "4.5"]
[White "Hummel, Erik Jan"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C89"]
[PlyCount "61"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[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. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d3 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Re4 Nf6 16. Rh4 Qf5 17. Bf4 Be7 18. d4 Qg6 19. Nd2 Bg4 20. Qe1 Rfe8 21. h3 Bf5 22. Nf3 Nd7 23. Qd2 Bxh4 24. Nxh4 Qf6 25. Bg5 Re2 26. Qxe2 Qxg5 27. Qf3 Bxh3 28. Qxf7+ Kh8 29. Nf3 Qh6 30. Re1 Nf6 31. Ne5 1-0

[Event "NED-ch U20"]
[Site "Nijmegen"]
[Date "2002.05.01"]
[Round "5.10"]
[White "Ruygrok, Dennis"]
[Black "Mekuria, Rufail"]
[Result "1-0"]
[ECO "B06"]
[PlyCount "69"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nd7 5. Be3 c6 6. Qd2 b5 7. d5 b4 8. Nd1 c5 9. a3 bxa3 10. Rxa3 Ngf6 11. Nc3 Ng4 12. Bf4 0-0 13. h3 Nge5 14. Nxe5 Nxe5 15. Bh6 Qb6 16. Bxg7 Kxg7 17. f4 Nd7 18. Bb5 a6 19. 0-0 Rb8 20. Bxd7 Bxd7 21. Rb1 a5 22. Ne2 a4 23. Re3 Qb4 24. Qc1 Rb7 25. b3 Rfb8 26. Ra1 axb3 27. Rxb3 Qxe4 28. Qb2+ f6 29. Rxb7 Bxh3 30. Rxe7+ Qxe7 31. Qxb8 Qe3+ 32. Kh2 Qxe2 33. Kxh3 Qh5+ 34. Kg3 g5 35. Ra7+ 1-0

[Event "NED-ch U20"]
[Site "Nijmegen"]
[Date "2002.04.30"]
[Round "2.9"]
[White "Ruygrok, Dennis"]
[Black "Beekhuis, Maarten"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "113"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. 0-0 Be7 6. Re1 d5 7. exd5 Nxd5 8. Nxd4 Nxd4 9. Qxd4 Be6 10. Bxd5 Qxd5 11. Qxd5 Bxd5 12. Bf4 c6 13. Be5 Rg8 14. Nc3 Be6 15. Rad1 Rd8 16. Ne4 Rxd1 17. Rxd1 f6 18. Bd6 Kf7 19. Re1 Re8 20. Bxe7 Rxe7 21. c4 Kf8 22. Nd6 b6 23. b3 Bg8 24. Rxe7 Kxe7 25. Nf5+ Ke6 26. Nxg7+ Ke5 27. Nh5 Bf7 28. Ng3 Bg6 29. Ne2 Bb1 30. f4+ Kd6 31. Nc3 Bf5 32. Kf2 Kc5 33. Ke3 Kb4 34. Kd2 Ka3 35. Kc1 h6 36. h3 h5 37. Kd2 Kb2 38. Ne2 h4 39. Nc3 Bg6 40. b4 Ka3 41. b5 c5 42. Nd5 Kxa2 43. Nxf6 Kb3 44. Ng4 Bf7 45. f5 Bxc4 46. f6 Kb2 47. Ne5 Be6 48. f7 Bxf7 49. Nxf7 c4 50. Ne5 c3+ 51. Ke2 c2 52. Nd3+ Kb3 53. Nc1+ Kc4 54. Kd2 Kxb5 55. Ne2 Kc5 56. Nf4 Kd4 57. Ng6 1-0

[Event "NED-ch U20"]
[Site "Nijmegen"]
[Date "2002.04.30"]
[Round "3.8"]
[White "Sminia, Jelmer"]
[Black "Ruygrok, Dennis"]
[Result "1/2-1/2"]
[ECO "C55"]
[PlyCount "63"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 0-0 6. h3 d5 7. exd5 Nxd5 8. 0-0 Bf6 9. Nbd2 Nb6 10. Bb5 Ne7 11. Ne4 Ng6 12. d4 c6 13. Be2 Bf5 14. Nxf6+ Qxf6 15. Bg5 Qe6 16. Qb3 Qxb3 17. axb3 Bc2 18. Nxe5 Rfe8 19. Bf3 Nxe5 20. dxe5 Bxb3 21. Be3 Nc4 22. Bxa7 Rxe5 23. Bd4 Ree8 24. Rfe1 Rxa1 25. Rxa1 f5 26. Ra7 Re7 27. Be3 Kf7 28. Kh2 Ke8 29. Bg5 Rd7 30. Ra8+ Kf7 31. Rb8 Bc2 32. Bf4 1/2-1/2

[Event "NED-ch U20"]
[Site "Nijmegen"]
[Date "2002.04.29"]
[Round "1.11"]
[White "Kamstra, Jippe"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C86"]
[PlyCount "73"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[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. h3 Bb7 10. d4 h6 11. Rd1 exd4 12. cxd4 Re8 13. e5 dxe5 14. dxe5 Bd6 15. e6 fxe6 16. Nh4 Nd5 17. Qh5 Ne5 18. Nc3 Nxc3 19. bxc3 Qf6 20. Nf5 Rf8 21. Bf4 Kh8 22. Nxd6 cxd6 23. Bg3 Rad8 24. Qe2 Rfe8 25. Rd4 Nf7 26. Rad1 d5 27. Rf4 Qe7 28. Re1 Ng5 29. Rg4 Ne4 30. Be5 Rg8 31. Qe3 Kh7 32. Bc2 g6 33. f3 Nf6 34. Rh4 h5 35. Qg5 Rdf8 36. Rxh5+ Nxh5 37. Qxe7+ 1-0

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.14"]
[Round "9"]
[White "Deutekom, Yde"]
[Black "Ruygrok, Dennis"]
[Result "1/2-1/2"]
[ECO "A06"]
[PlyCount "31"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nc6 3. Bb2 Nf6 4. e3 Bg4 5. Bb5 a6 6. Bxc6+ bxc6 7. d3 e6 8. 0-0 Bd6 9. Nbd2 0-0 10. c4 Re8 11. Qc2 e5 12. c5 Bxf3 13. Nxf3 e4 14. dxe4 dxe4 15. Rad1 exf3 16. cxd6 1/2-1/2

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.13"]
[Round "8"]
[White "Michielsen, Joost"]
[Black "Ruygrok, Dennis"]
[Result "1/2-1/2"]
[ECO "C92"]
[PlyCount "36"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 d6 7. c3 b5 8. Bb3 0-0 9. h3 h6 10. d4 Bb7 11. a4 Re8 12. Nbd2 Bf8 13. d5 Nb8 14. Nf1 c6 15. dxc6 Bxc6 16. Ng3 Nbd7 17. Bc2 Qc7 18. Qe2 Nc5 1/2-1/2

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.13"]
[Round "7"]
[White "Ruygrok, Dennis"]
[Black "Hemmer, Anne Fleur"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "65"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 0-0 8. Bg5 Be7 9. 0-0 d6 10. h3 h6 11. Be3 Bd7 12. e5 dxe5 13. dxe5 Nh7 14. Qe2 Qc8 15. Rad1 Be6 16. Nd5 Re8 17. a3 Nf8 18. Nd4 Nxd4 19. Bxd4 Ng6 20. f4 c6 21. Ne3 Nh4 22. Bxe6 fxe6 23. Qc4 Kh8 24. g3 Ng6 25. f5 exf5 26. Nxf5 Rf8 27. e6 Bf6 28. Bxf6 Rxf6 29. Nxg7 Rxf1+ 30. Rxf1 Qc7 31. Nh5 Qb6+ 32. Rf2 Ne5 33. Qf4 1-0

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.12"]
[Round "6"]
[White "Sminia, Jelmer"]
[Black "Ruygrok, Dennis"]
[Result "1/2-1/2"]
[ECO "C55"]
[PlyCount "51"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. Nc3 Nf6 5. d4 d6 6. 0-0 0-0 7. Be3 Bg4 8. dxe5 dxe5 9. h3 Bh5 10. Qd3 Qxd3 11. Bxd3 Rad8 12. a3 a6 13. Kh2 h6 14. g4 Bg6 15. Nh4 Nxg4+ 16. hxg4 Bxh4 17. Kg2 Nd4 18. Rh1 Be7 19. Nd5 Bd6 20. f4 f6 21. Rh3 c6 22. Nc3 Bc7 23. f5 Bf7 24. Rah1 Rfe8 25. Kg3 Kf8 26. Kf2 1/2-1/2

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.11"]
[Round "4"]
[White "Mazajchik, Tim"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C79"]
[PlyCount "85"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 d6 6. d4 Bd7 7. Bg5 Be7 8. Re1 0-0 9. c3 h6 10. Bh4 Nh7 11. Bxe7 Qxe7 12. Nbd2 Rad8 13. Bxc6 Bxc6 14. Qb3 b6 15. dxe5 dxe5 16. Nc4 Nf6 17. Ncxe5 Bxe4 18. Ng6 Qc5 19. Nxf8 Rxf8 20. Qd1 Re8 21. Nd2 Bc6 22. Rxe8+ Nxe8 23. Qe2 Nf6 24. Re1 Qd5 25. f3 Qxa2 26. Ne4 Nxe4 27. fxe4 Bb5 28. Qd2 Qc4 29. Qd5 Qxd5 30. exd5 Kf8 31. b3 Bd7 32. c4 Bf5 33. Re3 h5 34. Kf2 f6 35. Ke2 Kf7 36. Kd2 Bd7 37. Kc3 c6 38. d6 Be6 39. c5 bxc5 40. b4 cxb4+ 41. Kxb4 g5 42. Kc5 Bd5 43. d7 1-0

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.11"]
[Round "5"]
[White "Ruygrok, Dennis"]
[Black "Huijgens, Mark"]
[Result "1-0"]
[ECO "B01"]
[PlyCount "65"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bd2 Qb6 6. Nf3 Bf5 7. Bb5+ c6 8. Ba4 e6 9. 0-0 Bd6 10. Bb3 0-0 11. Bg5 Nbd7 12. Bh4 Bg4 13. Bg3 Bxf3 14. gxf3 Qc7 15. Ne4 Bf4 16. c3 Nh5 17. Qe2 Rae8 18. Rfe1 Kh8 19. Rad1 Rg8 20. Qf1 b6 21. Qh3 g6 22. Qh4 h6 23. c4 f5 24. Nc3 c5 25. Ba4 Bxg3 26. fxg3 Rd8 27. Rxe6 Nf8 28. Re7 Nd7 29. Nd5 Qc8 30. g4 cxd4 31. Bxd7 Qxc4 32. gxh5 gxh5+ 33. Kh1 1-0

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.10"]
[Round "2"]
[White "Groen, Robbert"]
[Black "Ruygrok, Dennis"]
[Result "0-1"]
[ECO "C28"]
[PlyCount "80"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. f4 d6 3. Nf3 Nc6 4. Bc4 Be7 5. 0-0 Nf6 6. Nc3 0-0 7. d3 Na5 8. Bb3 Nxb3 9. axb3 a6 10. fxe5 dxe5 11. Nxe5 Qd4+ 12. Kh1 Qxe5 13. Bf4 Qc5 14. d4 Qc6 15. Bg5 h6 16. Bh4 Bg4 17. Qd3 Rfe8 18. d5 Qd7 19. e5 Nxd5 20. Bxe7 Nxe7 21. Qg3 Ng6 22. Rae1 Qe6 23. Re3 Rad8 24. h3 Bf5 25. Re2 Nxe5 26. Rfe1 f6 27. Na2 Qd7 28. Nc1 Qc6 29. c3 Rd6 30. Qf4 Bxh3 31. Qg3 Bf5 32. Rf2 Qd7 33. Rff1 Rd2 34. Qh4 Rxb2 35. b4 Bg6 36. Rf2 Rxf2 37. Qxf2 Qf5 38. Qxf5 Bxf5 39. Nb3 Kf7 40. Kh2 Ng4+ 0-1

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.10"]
[Round "3"]
[White "Ruygrok, Dennis"]
[Black "Eimers, Nathalie"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "125"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. 0-0 Nxc3 9. bxc3 Bxc3 10. Qb3 0-0 11. Qxc3 d5 12. Bb5 Bd7 13. Qc5 Ne7 14. Bxd7 Qxd7 15. Ne5 Qd8 16. Ba3 Re8 17. Rac1 c6 18. Rb1 b6 19. Qc3 c5 20. dxc5 d4 21. Qc4 Qd5 22. Qxd5 Nxd5 23. cxb6 axb6 24. Nc4 Rec8 25. Nd6 Rc6 26. Nb5 Nc3 27. Nxc3 dxc3 28. Rb3 c2 29. Re3 h6 30. Rc1 b5 31. Kf1 Ra4 32. Bb2 Rxa2 33. Rc3 Rxc3 34. Bxc3 Ra4 35. Rxc2 Rc4 36. Rc1 Rh4 37. h3 Ra4 38. Rb1 Rc4 39. Bd2 Rc5 40. Ke2 f5 41. Kd3 Rd5+ 42. Kc3 Kf7 43. Be3 g5 44. g3 Ke6 45. Rb4 Kd7 46. Rd4 Kc6 47. Rxd5 Kxd5 48. Kd3 b4 49. Bd4 h5 50. Bf6 g4 51. h4 Ke6 52. Bg5 Kd5 53. Be7 b3 54. Kc3 Ke4 55. Bg5 Kf3 56. Be3 Ke2 57. Kxb3 Kd3 58. Kb4 Ke4 59. Kc4 Ke5 60. Kc5 Ke6 61. Bf4 Ke7 62. Kd5 Kf6 63. Kd6 1-0

[Event "NED U14 op"]
[Site "Hengelo"]
[Date "1999.08.09"]
[Round "1"]
[White "Ruygrok, Dennis"]
[Black "Mivzaei, Pouya"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "53"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. 0-0 Nxc3 9. bxc3 Bxc3 10. Qd3 d5 11. Bxd5 0-0 12. Bxf7+ Rxf7 13. Qxc3 Bg4 14. Ng5 Rf8 15. Qc4+ Kh8 16. Nf7+ Rxf7 17. Qxf7 Qxd4 18. Rb1 Bd7 19. Bb2 Ne5 20. Qxg7+ Kxg7 21. Bxd4 Kf6 22. f4 Ke6 23. Bxe5 Rg8 24. Bxc7 Bc6 25. f5+ Kf6 26. Bg3 Rd8 27. Bh4+ 1-0

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1999.05.08"]
[Round "9"]
[White "Ruygrok, Dennis"]
[Black "Mazajchik, Tim"]
[Result "1/2-1/2"]
[ECO "B02"]
[PlyCount "109"]
[EventDate "1999.05.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Bc4 Nxc3 5. bxc3 Nc6 6. Nf3 Bg4 7. 0-0 e6 8. d4 Bd6 9. Rb1 0-0 10. Re1 e5 11. h3 Bxf3 12. Qxf3 exd4 13. cxd4 Nxd4 14. Qd3 Rb8 15. Re4 Nc6 16. Bb2 Re8 17. Rbe1 Qd7 18. Qc3 Bf8 19. Rg4 Rxe1+ 20. Qxe1 Kh8 21. Qa1 f5 22. Be6 Qe7 23. Bxf5 Re8 24. g3 Qe1+ 25. Qxe1 Rxe1+ 26. Kg2 Kg8 27. Bd3 Ne5 28. Bxe5 Rxe5 29. Rf4 b5 30. Bxh7+ Kxh7 31. Rxf8 a5 32. Rf3 Rc5 33. c3 Rd5 34. a4 b4 35. cxb4 axb4 36. Rb3 c5 37. Rb1 Rd6 38. Rc1 Rc6 39. a5 c4 40. a6 c3 41. Ra1 c2 42. a7 Rc8 43. a8Q Rxa8 44. Rxa8 c1Q 45. Rb8 Qd2 46. g4 b3 47. Rxb3 g5 48. Re3 Kg6 49. Kg3 Qd4 50. Kg2 Kf6 51. Kg1 Qa1+ 52. Kg2 Qd1 53. Rf3+ Ke5 54. Re3+ Kf4 55. Rg3 1/2-1/2

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1999.05.07"]
[Round "7"]
[White "Ruygrok, Dennis"]
[Black "Van de Put, Jeroen"]
[Result "1/2-1/2"]
[ECO "C54"]
[PlyCount "42"]
[EventDate "1999.05.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 Nf6 9. 0-0 0-0 10. a3 Bg4 11. Qc2 h6 12. Rae1 d5 13. exd5 Nxd5 14. h3 Bh5 15. Ne5 Nxd4 16. Qd3 Nf4 17. Qe4 Nde2+ 18. Bxe2 Nxe2+ 19. Rxe2 Bxe2 20. Qxe2 Re8 21. Ndf3 Qf6 1/2-1/2

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1999.05.07"]
[Round "8"]
[White "Van Deutekom, Yde"]
[Black "Ruygrok, Dennis"]
[Result "1/2-1/2"]
[ECO "A05"]
[PlyCount "35"]
[EventDate "1999.05.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 d6 3. e3 Nf6 4. Nf3 Bg4 5. Be2 Nbd7 6. 0-0 Be7 7. h3 Bh5 8. d3 0-0 9. Nbd2 c6 10. c4 h6 11. Rc1 Rc8 12. Qc2 Qc7 13. a3 Qb8 14. Qb1 d5 15. Rfe1 Rfe8 16. b4 Bd6 17. cxd5 cxd5 18. e4 1/2-1/2

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1999.05.06"]
[Round "6"]
[White "Struik, Tjapko"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "109"]
[EventDate "1999.05.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. 0-0 Nf6 5. Nc3 d6 6. d3 Bg4 7. Be3 0-0 8. Qd2 Na5 9. Nh4 Nxc4 10. dxc4 Nxe4 11. Nxe4 Bxh4 12. f3 Be6 13. Qd3 f5 14. Nc3 f4 15. Bf2 Bxf2+ 16. Rxf2 Qe7 17. Nd5 Qf7 18. b3 Kh8 19. Rd1 Rad8 20. Rfd2 g5 21. h3 Rg8 22. Qc3 Bxd5 23. Rxd5 b6 24. b4 Qe7 25. c5 Rg6 26. c6 Re6 27. Re1 Kg8 28. b5 Ra8 29. Re4 h6 30. Qb3 a5 31. a4 Rf8 32. Kf1 Kf7 33. Ke2 h5 34. Rd1 Ke8 35. c4 g4 36. hxg4 hxg4 37. Rh1 gxf3+ 38. gxf3 Qg7 39. Rh2 Rg6 40. c5 Rg2+ 41. Rxg2 Qxg2+ 42. Kd1 Qg1+ 43. Ke2 Ke7 44. cxd6+ cxd6 45. Qa3 Qg5 46. Kd2 Rh8 47. Re2 Qf6 48. Qd3 Qe6 49. Rg2 Rh1 50. Rg7+ Kf8 51. Rg2 Qa2+ 52. Qc2 Qd5+ 53. Ke2 Qd4 54. Qf5+ Ke8 55. Qe6+ 1-0

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1999.05.05"]
[Round "4"]
[White "De Wind, Joris"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C68"]
[PlyCount "73"]
[EventDate "1999.05.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bd6 6. d4 Bg4 7. dxe5 Bxf3 8. Qxf3 Bxe5 9. Nd2 Qe7 10. Nc4 Nf6 11. Qf5 Bd4 12. c3 Ba7 13. Bg5 Qe6 14. Bxf6 gxf6 15. Qxe6+ fxe6 16. Rad1 Ke7 17. Rd3 Rad8 18. Rfd1 Rxd3 19. Rxd3 Rd8 20. Rxd8 Kxd8 21. Kf1 Kd7 22. Ke2 b5 23. Ne3 c5 24. Ng4 Ke7 25. e5 fxe5 26. Nxe5 Kf6 27. f4 c4 28. Kf3 c5 29. g4 Kg7 30. f5 exf5 31. gxf5 Bb8 32. f6+ Kh6 33. Kf4 b4 34. Kf5 bxc3 35. bxc3 Bc7 36. Nd7 Bd6 37. Ke6 1-0

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1999.05.05"]
[Round "5"]
[White "Ruygrok, Dennis"]
[Black "De Clerck, Martijn"]
[Result "1-0"]
[ECO "B40"]
[PlyCount "65"]
[EventDate "1999.05.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Bc5 5. Nb3 Be7 6. Nc3 d6 7. Bf4 e5 8. Be3 Nf6 9. Be2 Nc6 10. 0-0 a6 11. f3 Be6 12. Nd5 b5 13. Bb6 Qb8 14. Nc7+ Kd7 15. Nxa8 Qxa8 16. c3 Bxb3 17. Qxb3 Qf8 18. a4 d5 19. exd5 Bc5+ 20. Bxc5 Qxc5+ 21. Kh1 Na5 22. Qc2 b4 23. Bxa6 bxc3 24. Qxc3 Qxc3 25. bxc3 Nxd5 26. Bb5+ Ke7 27. Rfe1 f6 28. c4 Nb4 29. Red1 Nc2 30. Rd7+ Ke6 31. Rad1 g6 32. Ra7 Nb3 33. Bd7+ 1-0

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1999.05.04"]
[Round "3"]
[White "Ruygrok, Dennis"]
[Black "Sminia, Jelmer"]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "72"]
[EventDate "1999.05.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Nf3 Nf6 6. Bg5 0-0 7. 0-0 Bg4 8. Nbd2 Nbd7 9. c3 c6 10. Re1 Qc7 11. Qc2 Rfe8 12. Bh4 Rac8 13. Rac1 Bf5 14. Bg3 Bxg3 15. hxg3 h6 16. Nh2 Be6 17. Re2 Ng4 18. Rce1 Ndf6 19. Nxg4 Bxg4 20. Nf3 Rxe2 21. Qxe2 Bxf3 22. gxf3 Qd7 23. Qc2 Re8 24. Re3 Qd6 25. Kg2 Kf8 26. a4 Nh5 27. Rxe8+ Kxe8 28. b4 Qe7 29. Qc1 Qd6 30. Qe3+ Qe7 31. Kh3 Nf6 32. Kg2 Nd7 33. Qc1 Nf6 34. Qf4 Qd8 35. Qe5+ Kf8 36. Bf5 Ne8 1/2-1/2

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1999.05.04"]
[Round "2"]
[White "Van Duijvenbode, Harrie"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C47"]
[PlyCount "43"]
[EventDate "1999.05.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 Nb4 6. Nxd4 Nbxd5 7. exd5 Nxd5 8. Nf5 Ne7 9. Bg5 f6 10. Bxf6 gxf6 11. Qh5+ Ng6 12. 0-0-0 d5 13. Nh4 Bg7 14. Rxd5 Qe7 15. Bd3 Bd7 16. Bxg6+ hxg6 17. Qxg6+ Kf8 18. Qg3 Be8 19. Nf5 Qf7 20. Rc5 Bc6 21. Re1 Rg8 22. Qa3 1-0

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1999.05.03"]
[Round "1"]
[White "Ruygrok, Dennis"]
[Black "Nederlof, Jesper"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "71"]
[EventDate "1999.05.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 c5 5. c3 Nc6 6. Nf3 Bg4 7. Nbd2 Nf6 8. dxc5 Bxc5 9. 0-0 0-0 10. b4 Bb6 11. Qb3 Re8 12. Bb2 Ne4 13. Qc2 Rc8 14. a3 f5 15. Qb3 Ne5 16. Bxe4 fxe4 17. Nxe5 Rxe5 18. c4 dxc4 19. Nxc4 Be6 20. Bxe5 Bxc4 21. Qg3 Qe7 22. Rac1 g6 23. Rfd1 Qf7 24. Qf4 Re8 25. Qxf7+ Bxf7 26. Bd4 Bb3 27. Rd2 Rd8 28. Be3 Rxd2 29. Bxd2 Bd5 30. Be3 Bxe3 31. fxe3 Bc6 32. b5 Bxb5 33. Rc8+ Kf7 34. Rc7+ Kg8 35. Rxb7 a6 36. Kf2 1-0

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1998.??.??"]
[Round "?"]
[White "De Jong, Jan Willem"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "65"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. Nc3 Nf6 5. d4 exd4 6. Nxd4 Nxd4 7. Qxd4 d6 8. Bf4 0-0 9. 0-0-0 a6 10. Qe3 Ng4 11. Qf3 Bf6 12. h3 Ne5 13. Bxe5 Bxe5 14. Qe3 Be6 15. Bb3 Qf6 16. g3 Bxc3 17. bxc3 b5 18. f4 Qe7 19. g4 Rfe8 20. Rhe1 c5 21. f5 c4 22. fxe6 Qxe6 23. Kb2 h6 24. Qb6 Red8 25. Rd4 cxb3 26. cxb3 Qf6 27. Red1 Qf2+ 28. R1d2 Qe3 29. R2d3 Qf2+ 30. Rd2 Qg1 31. Qc6 Qe3 32. R4d3 Rdc8 33. Qxc8+ 1-0

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1998.??.??"]
[Round "?"]
[White "Ruygrok, Dennis"]
[Black "Den Heeten, Djurre"]
[Result "1/2-1/2"]
[ECO "B20"]
[PlyCount "79"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. Nc3 a6 5. a4 Nge7 6. d4 d5 7. exd5 exd5 8. Be2 c4 9. Be3 Ng6 10. 0-0 Bb4 11. Bd2 0-0 12. Nb1 Bf5 13. Bg5 f6 14. Bh4 Be4 15. Bg3 Bd6 16. Bxd6 Qxd6 17. Nc3 Bf5 18. Qd2 Rfe8 19. Rfe1 Rab8 20. b3 b5 21. axb5 axb5 22. bxc4 bxc4 23. Ra4 Qf4 24. Nxd5 Qxd2 25. Nxd2 Nxd4 26. Nc3 Bxc2 27. Bxc4+ Kf8 28. Rxe8+ Rxe8 29. Ra1 Ne5 30. Bd5 Rc8 31. Ra8 Rxa8 32. Bxa8 g5 33. Be4 Bxe4 34. Ndxe4 Kf7 35. f3 h6 36. Kf2 f5 37. Nc5 h5 38. Nd5 h4 39. Nb4 g4 40. f4 1/2-1/2

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1998.??.??"]
[Round "?"]
[White "Ruygrok, Dennis"]
[Black "Huistra, Pieter"]
[Result "1/2-1/2"]
[ECO "B35"]
[PlyCount "97"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 Nf6 7. Nc3 Qa5 8. 0-0 0-0 9. Qd2 Nxd4 10. Bxd4 Nxe4 11. Nxe4 Qxd2 12. Nxd2 Bxd4 13. c3 Bg7 14. Rfe1 e6 15. Rad1 d5 16. Bb3 b6 17. Nf3 Ba6 18. a3 Rac8 19. h3 Rfd8 20. Nd4 Bc4 21. Bxc4 Rxc4 22. f4 Bxd4+ 23. Rxd4 Rxd4 24. cxd4 Rc8 25. Re2 a5 26. Kf2 Kf8 27. g4 Rc4 28. Rd2 b5 29. Ke3 Ke7 30. Rd3 a4 31. Rc3 Kd6 32. g5 Rxc3+ 33. bxc3 Ke7 34. Kf3 f6 35. Ke3 Kf7 36. Kd3 Kf8 37. Ke3 Ke7 38. h4 Kf7 39. Kd3 fxg5 40. fxg5 Ke7 41. Ke3 Kd6 42. Kf4 e5+ 43. dxe5+ Ke6 44. Kf3 Kxe5 45. Ke3 Ke6 46. Kd3 Kd6 47. Kd4 Kc6 48. Ke3 Kd6 49. Kd4 1/2-1/2

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1998.??.??"]
[Round "?"]
[White "Ruygrok, Dennis"]
[Black "Koekoek, Arjen"]
[Result "1/2-1/2"]
[ECO "B46"]
[PlyCount "44"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 a6 6. Be3 Bb4 7. Nxc6 bxc6 8. Bd4 Nf6 9. Qf3 c5 10. Bxf6 Qxf6 11. Qxf6 gxf6 12. Bd3 Bxc3+ 13. bxc3 Bb7 14. 0-0 Ke7 15. Rab1 Bc6 16. Rb6 a5 17. Rfb1 c4 18. Bxc4 Bxe4 19. Bd3 Bc6 20. f3 Rhc8 21. c4 Kd6 22. Kf2 h6 1/2-1/2

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1998.??.??"]
[Round "?"]
[White "Ruygrok, Dennis"]
[Black "Leenhouts, Koen"]
[Result "0-1"]
[ECO "C17"]
[PlyCount "86"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Nf3 cxd4 6. Qxd4 Qa5 7. Bd2 Nc6 8. Qg4 Kf8 9. Bd3 d4 10. Nb5 a6 11. Nbxd4 Bxd2+ 12. Nxd2 Qxe5+ 13. Ne2 Qxb2 14. 0-0 Nf6 15. Qg3 Qe5 16. Qh4 b5 17. Ne4 Nxe4 18. Bxe4 Bb7 19. Rad1 g5 20. Qh6+ Ke7 21. Bf3 Rad8 22. Rxd8 Nxd8 23. Bxb7 Nxb7 24. Qh5 Nd6 25. Rd1 Rc8 26. Nd4 Ne4 27. Qf3 Nc3 28. Qb7+ Qc7 29. Qxc7+ Rxc7 30. Ra1 Rc4 31. Nb3 Ra4 32. a3 Rc4 33. Nd2 Rc6 34. Kf1 Nd5 35. Rc1 Nf4 36. Nb3 Rc3 37. g3 Nd3 38. Rd1 Nb2 39. Rc1 Nc4 40. a4 bxa4 41. Nc5 Nd2+ 42. Ke2 Nb3 43. Nxb3 axb3 0-1

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1998.??.??"]
[Round "?"]
[White "Ruygrok, Dennis"]
[Black "Visser, Richard"]
[Result "1/2-1/2"]
[ECO "B90"]
[PlyCount "107"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. Nc3 g6 5. d4 cxd4 6. Nxd4 Bg7 7. 0-0 0-0 8. Be3 a6 9. a4 Nc6 10. h3 Bd7 11. Qd2 Rc8 12. Bb3 Qc7 13. f4 Na5 14. f5 Nc4 15. Bxc4 Qxc4 16. g4 d5 17. e5 Ne4 18. Nxe4 dxe4 19. f6 exf6 20. exf6 Bh8 21. b3 Qc7 22. Qg2 Qe5 23. Qf2 Bxf6 24. Rad1 Bg7 25. Nf3 exf3 26. Rxd7 b5 27. axb5 axb5 28. Rd2 f5 29. Bd4 Qf4 30. Bxg7 Kxg7 31. Rd7+ Kg8 32. Qxf3 Qxf3 33. Rxf3 Rxc2 34. Rd5 fxg4 35. Rxf8+ Kxf8 36. hxg4 Rc3 37. Rxb5 Rg3+ 38. Kf2 Rxg4 39. Rb8+ Kg7 40. b4 h5 41. b5 h4 42. b6 Rb4 43. Kg2 g5 44. Kh3 Kf7 45. b7 Kg7 46. Rc8 Rxb7 47. Rc4 Kg6 48. Kg4 Rf7 49. Ra4 Rf2 50. Ra6+ Rf6 51. Ra4 h3 52. Kxh3 Rf4 53. Rxf4 gxf4 54. Kg4 1/2-1/2

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1998.??.??"]
[Round "?"]
[White "Spanhoff, Frederik"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "33"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. Nf3 Be7 5. d3 d6 6. Be3 Bg4 7. h3 Bh5 8. g4 Bg6 9. Qd2 Na5 10. Bb3 Nxb3 11. axb3 Qd7 12. Ke2 h6 13. Rag1 Qe6 14. Nb5 Qd7 15. Qa5 b6 16. Qa4 a6 17. Nxc7+ 1-0

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1998.??.??"]
[Round "?"]
[White "Van Deutekom, Yde"]
[Black "Ruygrok, Dennis"]
[Result "1/2-1/2"]
[ECO "C47"]
[PlyCount "78"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Be2 Nf6 4. Nc3 Bc5 5. 0-0 d6 6. d3 h6 7. Be3 Bb6 8. h3 Be6 9. d4 exd4 10. Nxd4 Nxd4 11. Bxd4 0-0 12. Bxb6 axb6 13. f4 Qe7 14. Re1 Rfe8 15. Bf3 Rad8 16. Qe2 Kf8 17. e5 dxe5 18. Qxe5 c6 19. Rad1 Qc5+ 20. Qxc5+ bxc5 21. Na4 Nd7 22. g4 g6 23. Nc3 Nb6 24. Kf2 Nd5 25. Nxd5 Bxd5 26. Rxe8+ Kxe8 27. Re1+ Kf8 28. Rd1 Ke7 29. Re1+ Kf6 30. Rd1 c4 31. b3 cxb3 32. axb3 Ke7 33. Re1+ Kf6 34. Rd1 Ke7 35. Bxd5 Rxd5 36. Rxd5 cxd5 37. Ke3 Kd6 38. Kd4 f6 39. h4 b6 1/2-1/2

[Event "NED-ch U14"]
[Site "Leiden"]
[Date "1998.??.??"]
[Round "?"]
[White "Van Duijvenbode, Harrie"]
[Black "Ruygrok, Dennis"]
[Result "1/2-1/2"]
[ECO "C47"]
[PlyCount "130"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 d6 5. dxe5 Nxe5 6. Nxe5 dxe5 7. Qxd8+ Kxd8 8. Bg5 Be7 9. 0-0-0+ Bd7 10. Bc4 Rf8 11. Rd2 Ke8 12. Rhd1 Bc6 13. Bb5 a6 14. Bxc6+ bxc6 15. Bxf6 Bxf6 16. Rd7 Rc8 17. g3 Be7 18. R1d3 Bd6 19. f4 f6 20. f5 g6 21. Na4 a5 22. Nb6 cxb6 23. R7xd6 Rf7 24. Re6+ Kf8 25. Rdd6 Kg7 26. Rxc6 Rxc6 27. Rxc6 Rb7 28. g4 Rd7 29. Rc3 Rd4 30. Re3 gxf5 31. gxf5 Kh6 32. c3 Rd7 33. Kc2 Kg5 34. a4 Kf4 35. Re1 h5 36. b4 axb4 37. cxb4 Rd4 38. Kc3 h4 39. h3 Kg3 40. Re3+ Kf2 41. Rd3 Rxe4 42. Kb3 Rd4 43. Kc3 Rf4 44. Rd2+ Ke1 45. Ra2 Rxf5 46. a5 bxa5 47. bxa5 Rg5 48. a6 Rg8 49. a7 Ra8 50. Kd3 f5 51. Ke3 Kd1 52. Kd3 Kc1 53. Kc4 Kb1 54. Ra5 Kc2 55. Kd5 f4 56. Kxe5 f3 57. Kf4 f2 58. Ra2+ Kd3 59. Rxf2 Rxa7 60. Kg5 Ke3 61. Rf8 Ra4 62. Rf7 Re4 63. Rf1 Ra4 64. Rf5 Rd4 65. Rf6 Ra4 1/2-1/2

[Event "The Hague op"]
[Site "The Hague"]
[Date "1996.??.??"]
[Round "9"]
[White "Kemp, Bart"]
[Black "Ruygrok, Dennis"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "91"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 0-0 9. 0-0 d6 10. Qc2 Re8 11. Rfe1 Bg4 12. h3 Bxf3 13. Nxf3 d5 14. exd5 Rxe1+ 15. Rxe1 Nxd5 16. Qf5 Nf6 17. Ng5 g6 18. Qf4 Qxd4 19. Bxf7+ Kh8 20. Qxd4 Nxd4 21. Re7 Rc8 22. a3 Nf5 23. Re5 Kg7 24. Ba2 Re8 25. Rc5 c6 26. Ne6+ Kh6 27. g4 Ne4 28. Re5 Nfd6 29. g5+ Nxg5 30. Rxg5 Rxe6 31. Rg4 Re1+ 32. Kg2 Re2 33. Rd4 Rxb2 34. Bg8 Nb5 35. Rd7 Nxa3 36. h4 Kh5 37. Kg3 g5 38. Rxh7+ Kg6 39. h5+ Kf5 40. h6 Kg6 41. Kg4 Rb4+ 42. Kg3 a5 43. Re7 Kxh6 44. Bh7 Nc4 45. Bd3 a4 46. Rh7# 1-0

