[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.11"]
[Round "9"]
[White "Groenewegen, Roy"]
[Black "Van Eck, Milan"]
[Result "1-0"]
[ECO "B01"]
[PlyCount "59"]
[EventDate "2001.08.06"]
[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 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Bf5 5. Bc4 e6 6. d3 a6 7. 0-0 Nd7 8. Qe2 Bc5 9. a3 0-0-0 10. Bf4 Qb6 11. Na4 Qc6 12. Nxc5 Qxc5 13. Ne5 Nxe5 14. Bxe5 Nf6 15. Qe3 Qc6 16. Qg5 Rhg8 17. Qf4 Nh5 18. Qe3 f6 19. Bc3 Rgf8 20. Rfe1 e5 21. Bb4 Rfe8 22. Bf7 Rh8 23. Bxh5 g6 24. Bf3 Qxc2 25. Qa7 Bxd3 26. Rac1 Qa4 27. Qxb7+ Kd7 28. Bc6+ Qxc6 29. Qxc6+ Kc8 30. Qxc7# 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.10"]
[Round "7"]
[White "Blad, Jochem"]
[Black "Groenewegen, Roy"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "35"]
[EventDate "2001.08.06"]
[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 d6 4. Bc4 Bg4 5. h3 Bh5 6. g4 Bg6 7. h4 h5 8. Ng1 Be7 9. g5 f6 10. Nf3 fxg5 11. hxg5 Bxg5 12. Rg1 h4 13. Nxg5 h3 14. Nxh3 Rxh3 15. Qg4 Rh6 16. Bxg8 Qf6 17. Nd5 Qd8 18. d3 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.10"]
[Round "8"]
[White "Van Houwelingen, Violet"]
[Black "Groenewegen, Roy"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "124"]
[EventDate "2001.08.06"]
[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. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 Nf6 6. Bg5 Be7 7. Nc3 d6 8. Bc4 Be6 9. Bxe6 fxe6 10. 0-0 0-0 11. Rfe1 c5 12. Qd3 Ng4 13. Qg3 Bxg5 14. Qxg4 Qf6 15. f3 Rae8 16. Rad1 Rd8 17. Rd3 Bf4 18. Qh3 Rf7 19. g3 Be5 20. Rb1 Bxc3 21. Rxc3 Qd4+ 22. Kg2 Qd2+ 23. Kg1 Qe2 24. Qg2 Qxg2+ 25. Kxg2 b6 26. Rd3 Rfd7 27. Rbd1 d5 28. c4 d4 29. e5 Rf7 30. a4 Rdf8 31. f4 g5 32. fxg5 Rf2+ 33. Kh3 Rxb2 34. Re1 Rb4 35. Ra3 Rxc4 36. Re4 Rf5 37. Rg4 Rxe5 38. Kh4 Kg7 39. Kh5 Rc2 40. h4 Rd5 41. Re4 Rd6 42. Rd3 Ra2 43. Rd1 Rxa4 44. Rde1 d3 45. Rxa4 a5 46. Rae4 b5 47. Rxe6 Rxe6 48. Rxe6 c4 49. Re7+ Kg8 50. g6 hxg6+ 51. Kxg6 Kf8 52. Rd7 b4 53. Ra7 d2 54. Kf6 Ke8 55. Ke6 Kd8 56. Rd7+ Kc8 57. Rxd2 c3 58. Rc2 Kb7 59. Kd5 Kb6 60. Kc4 Kc6 61. h5 a4 62. Rxc3 b3 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.09"]
[Round "6"]
[White "Groenewegen, Roy"]
[Black "Derlagen, Hans"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "42"]
[EventDate "2001.08.06"]
[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. c3 Nc6 4. d4 cxd4 5. cxd4 g6 6. Bb5 Bg7 7. d5 a6 8. dxc6 axb5 9. cxb7 Bxb7 10. Qd3 Ba6 11. Nbd2 Nf6 12. Qb3 Nd7 13. Ng5 e6 14. 0-0 Nc5 15. Qg3 Be5 16. Qe3 Qf6 17. Rb1 Bf4 18. Nxh7 Rxh7 19. Qe2 Bxh2+ 20. Kh1 Be5+ 21. Kg1 Rh1+ 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.08"]
[Round "5"]
[White "Groenewegen, Roy"]
[Black "Vlug, Arthur"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "54"]
[EventDate "2001.08.06"]
[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. Nf3 d5 3. e5 c5 4. c3 Nc6 5. Bb5 Qb6 6. Bxc6+ bxc6 7. 0-0 Ba6 8. Re1 Nh6 9. d3 Nf5 10. Qc2 c4 11. d4 Rb8 12. Nbd2 c5 13. dxc5 Bxc5 14. Rf1 0-0 15. Ng5 h6 16. Nh3 Rfd8 17. Nf3 d4 18. cxd4 Nxd4 19. Nxd4 Bxd4 20. Re1 Bxb2 21. Rb1 c3 22. Re3 Qd4 23. g3 Qd1+ 24. Qxd1 Rxd1+ 25. Kg2 Bb7+ 26. f3 Bxc1 27. Rxc3 Bxf3+ 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.08"]
[Round "4"]
[White "Van Diepen, Hugo"]
[Black "Groenewegen, Roy"]
[Result "0-1"]
[ECO "D08"]
[PlyCount "94"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. e3 Bb4+ 5. Bd2 dxe3 6. fxe3 Bxd2+ 7. Qxd2 Qxd2+ 8. Nxd2 Nc6 9. Ngf3 Bg4 10. h3 Bxf3 11. Nxf3 0-0-0 12. Be2 Re8 13. Nd4 Nxe5 14. Nc2 Nf6 15. 0-0-0 Rd8 16. Nd4 Ne4 17. Rhf1 Ng3 18. Bg4+ Nxg4 19. Rf3 Ne5 20. Rxg3 Nxc4 21. Rxg7 Nxe3 22. Rd3 Nf5 23. Rg4 c5 24. Rg5 Nxd4 25. Rxc5+ Nc6 26. Ra3 a6 27. Ra4 Rhe8 28. Rg4 Re1+ 29. Kc2 Re2+ 30. Kc3 Re3+ 31. Kc2 Re2+ 32. Kc3 Rdd2 33. Rg7 Rc2+ 34. Kd3 Rxc5 35. Kxe2 Rc2+ 36. Kf3 Rxb2 37. Rxf7 Rxa2 38. Rxh7 Ne5+ 39. Kg3 Nd3 40. h4 Ne1 41. h5 Rxg2+ 42. Kf4 Rh2 43. Kg5 Nf3+ 44. Kf6 b5 45. h6 b4 46. Kg7 b3 47. Rh8+ Kc7 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.07"]
[Round "3"]
[White "De Koning, Wouter"]
[Black "Groenewegen, Roy"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "35"]
[EventDate "2001.08.06"]
[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. d4 d6 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bc4 f5 7. Ng5 Nh6 8. Nc3 Bb4 9. Bd2 Bxc3 10. Bxc3 fxe4 11. 0-0-0+ Ke7 12. Rhe1 Ng4 13. f3 exf3 14. Nxf3 Re8 15. Nxe5 Ncxe5 16. Bxe5 Nxe5 17. Rxe5+ Kf8 18. Rf1+ 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.07"]
[Round "2"]
[White "Groenewegen, Roy"]
[Black "Broekhuizen, Maarten"]
[Result "1-0"]
[ECO "C44"]
[PlyCount "117"]
[EventDate "2001.08.06"]
[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. d3 Be7 4. Be2 Nf6 5. 0-0 d5 6. b3 Be6 7. Bb2 Qd6 8. Qd2 0-0-0 9. Qe3 d4 10. Qd2 h5 11. Ba3 Qd7 12. Bxe7 Qxe7 13. Qg5 Ne8 14. Qxe7 Nxe7 15. Nxe5 g5 16. Nf3 g4 17. Ng5 Nf6 18. e5 Nfd5 19. Nxe6 fxe6 20. a3 Rdg8 21. g3 h4 22. b4 hxg3 23. hxg3 Rg7 24. Kg2 Ng6 25. Bxg4 Ngf4+ 26. Kf3 Ng6 27. Bxe6+ Kb8 28. Bxd5 Nxe5+ 29. Ke2 Re8 30. Kd1 c6 31. Bg2 Ng4 32. Nd2 Nh2 33. Rh1 Ng4 34. Ne4 Rf8 35. Ke2 Re7 36. Raf1 b5 37. Rh4 Nf6 38. Rf4 Kb7 39. Kd1 Rxe4 40. Rxe4 Nxe4 41. Bxe4 Kb6 42. f4 c5 43. g4 cxb4 44. axb4 Kc7 45. g5 Kd7 46. f5 Ke7 47. f6+ Kf7 48. g6+ Kg8 49. g7 Ra8 50. Rg1 Kf7 51. Rg6 Rb8 52. g8Q+ Rxg8 53. Rxg8 Kxg8 54. Bg6 Kf8 55. f7 a6 56. Kd2 Kg7 57. Bh5 Kf8 58. c3 dxc3+ 59. Kxc3 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.06"]
[Round "1"]
[White "Ootes, Lennart"]
[Black "Groenewegen, Roy"]
[Result "1-0"]
[ECO "C24"]
[PlyCount "123"]
[EventDate "2001.08.06"]
[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. Bc4 Nf6 3. d4 exd4 4. e5 Qe7 5. Qe2 Ng8 6. Nf3 Nc6 7. 0-0 d6 8. Bg5 f6 9. exf6 Qxe2 10. f7+ Kd7 11. Bxe2 Nge7 12. Bc4 Nd8 13. Nxd4 c6 14. Re1 d5 15. Be2 Nxf7 16. Bg4+ Kd8 17. Ne6+ Bxe6 18. Bxe7+ Bxe7 19. Bxe6 Ng5 20. Nd2 Rf8 21. Rad1 Bc5 22. Re2 Nxe6 23. Rxe6 Rxf2 24. Kh1 Kd7 25. Ree1 Raf8 26. c3 Be7 27. Kg1 Bc5 28. Kh1 b5 29. Ne4 Rxb2 30. Nxc5+ Kd6 31. Nb3 Rxa2 32. Nd4 Raf2 33. Kg1 R2f6 34. Ra1 Ra8 35. Ra6 Kd7 36. h3 g6 37. Kh2 h6 38. Nxb5 Rf2 39. Nd4 Rf6 40. Rd1 Kc7 41. Ra2 Kb6 42. Rda1 a6 43. Ra5 Rf2 44. R1a4 Rb2 45. Kg3 c5 46. Ne6 Rb5 47. Rxb5+ Kxb5 48. Rg4 Rg8 49. Nc7+ Kc6 50. Nxa6 Kb6 51. Ra4 Ra8 52. Nxc5 Rxa4 53. Nxa4+ Kb5 54. Nb2 Kc5 55. Kf4 Kd6 56. Nd3 Ke6 57. Ne5 g5+ 58. Kg4 Kxe5 59. Kh5 Kf6 60. Kxh6 Kf5 61. Kh5 Kf4 62. g4 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.12"]
[Round "9"]
[White "Groenewegen, Roy"]
[Black "Prince, Jip"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "59"]
[EventDate "2000.08.07"]
[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 Nf6 4. Nc3 Bc5 5. d3 d6 6. Bg5 h6 7. Bh4 g5 8. Bg3 Bg4 9. Bb5 Qd7 10. Nd5 Nxd5 11. exd5 f5 12. h3 Bh5 13. dxc6 bxc6 14. Ba4 e4 15. Qe2 d5 16. dxe4 dxe4 17. Qa6 exf3 18. Bxc6 fxg2 19. Bxd7+ Kxd7 20. Rg1 Rae8+ 21. Kd2 Ke7 22. Rae1+ Kf7 23. Qc4+ Kg7 24. Be5+ Rxe5 25. Rxe5 Bxf2 26. Re7+ Kf8 27. Qe6 Bd4 28. Qd7 Bf6 29. Qd8+ Be8 30. Qxe8# 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.11"]
[Round "8"]
[White "Euser, Kasper"]
[Black "Groenewegen, Roy"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "27"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nc6 3. Bf4 d5 4. c4 dxc4 5. e4 Bb4+ 6. Nc3 Nge7 7. Bxc4 f6 8. a3 Nxd4 9. axb4 Nxf3+ 10. Qxf3 e5 11. Bxe5 fxe5 12. Qf7+ Kd7 13. Rd1+ Kc6 14. Rxd8 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.11"]
[Round "7"]
[White "Groenewegen, Roy"]
[Black "Springelkamp, Henriet"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "42"]
[EventDate "2000.08.07"]
[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. Nc3 Nf6 5. d3 h6 6. Be3 Bb6 7. Qd2 d6 8. 0-0 Bg4 9. Kh1 Bxf3 10. gxf3 Qe7 11. Rg1 Rg8 12. Rg3 0-0-0 13. Rag1 g5 14. Nd5 Nxd5 15. exd5 Nd4 16. f4 exf4 17. Bxf4 Ne2 18. Re1 Nxg3+ 19. Bxg3 Qf6 20. c3 Qf3+ 21. Kg1 h5 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.10"]
[Round "6"]
[White "Dekker, Marcel"]
[Black "Groenewegen, Roy"]
[Result "0-1"]
[ECO "C45"]
[PlyCount "106"]
[EventDate "2000.08.07"]
[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. d4 exd4 4. Nxd4 Nf6 5. Nxc6 dxc6 6. Qxd8+ Kxd8 7. Bd3 Be6 8. Bg5 Bd6 9. 0-0 h6 10. Bh4 Be5 11. Nc3 Kd7 12. Rad1 Ke7 13. Be2 Rad8 14. a3 Rd7 15. Na4 b6 16. Kh1 Rhd8 17. f4 Bxf4 18. Rxd7+ Rxd7 19. Rxf4 g5 20. Bxg5 hxg5 21. Rf1 Nxe4 22. Re1 Rd2 23. Bf3 Nd6 24. Bxc6 Rxc2 25. Bd5 Kd7 26. Bxe6+ fxe6 27. Rb1 Nb5 28. h3 e5 29. Rd1+ Ke6 30. Kh2 Rc4 31. b3 Rd4 32. Rc1 e4 33. Nc3 Nxc3 34. Rxc3 c5 35. Re3 Kf5 36. g3 Rd3 37. Re1 e3 38. h4 g4 39. Rf1+ Kg6 40. Rf4 Rd2+ 41. Kg1 Rd1+ 42. Kg2 e2 43. Rxg4+ Kh6 44. Re4 e1Q 45. Rxe1 Rxe1 46. g4 Re3 47. g5+ Kg6 48. Kf2 Rxb3 49. h5+ Kxg5 50. Ke2 Rxa3 51. Kd2 Rb3 52. Kc2 c4 53. h6 Kxh6 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.09"]
[Round "5"]
[White "Groenewegen, Roy"]
[Black "Voortman, Jasper"]
[Result "1/2-1/2"]
[ECO "C28"]
[PlyCount "36"]
[EventDate "2000.08.07"]
[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 Nf6 4. Nc3 Bb4 5. d3 d6 6. a3 Bc5 7. Bg5 h6 8. Bh4 g5 9. Bg3 Qe7 10. h3 Be6 11. Nd5 Bxd5 12. Bxd5 Nxd5 13. exd5 Nd4 14. 0-0 0-0-0 15. Nxd4 Bxd4 16. c3 Bb6 17. Qg4+ Qd7 18. Qxd7+ Rxd7 1/2-1/2

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.09"]
[Round "4"]
[White "Visscher, Anne"]
[Black "Groenewegen, Roy"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "65"]
[EventDate "2000.08.07"]
[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. d3 d6 5. Ng5 Be6 6. Bb5 Qf6 7. Qf3 a6 8. Bxc6+ bxc6 9. Nc3 h6 10. Qxf6 Nxf6 11. Nf3 0-0 12. 0-0 Bg4 13. Nd2 d5 14. b3 Rfe8 15. h3 Bh5 16. Kh1 g5 17. Bb2 Bg6 18. a3 Bd4 19. f3 Be3 20. Bc1 Rad8 21. Rd1 Nh5 22. Nf1 Bb6 23. Re1 Nf4 24. Bxf4 gxf4 25. Rab1 f5 26. Re2 fxe4 27. fxe4 Bh5 28. Ree1 Bf2 29. Rec1 Bg3 30. Nxg3 fxg3 31. Rf1 Bg6 32. Rbe1 dxe4 33. Nxe4 1/2-1/2

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.08"]
[Round "3"]
[White "Groenewegen, Roy"]
[Black "Kratz, Jacques"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "145"]
[EventDate "2000.08.07"]
[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. Nc3 Nf6 5. d3 h6 6. Be3 Qe7 7. Qd2 0-0 8. Bxh6 Ng4 9. Nd5 Qd6 10. Bxg7 Kxg7 11. Qg5+ Qg6 12. Qxg6+ fxg6 13. Rf1 Nd4 14. Nxd4 Bxd4 15. 0-0-0 Nxh2 16. Rh1 Rh8 17. f3 c6 18. Ne7 b5 19. Nxc8 bxc4 20. Nd6 c3 21. b3 a5 22. a4 Bc5 23. Nc4 g5 24. Nxe5 Bd6 25. Nxd7 g4 26. fxg4 Nxg4 27. Kb1 Nf2 28. Rxh8 Kxh8 29. Rf1 Rd8 30. Nf6 Bc5 31. e5 Kg7 32. Ka2 Kg6 33. b4 axb4 34. Kb3 Be3 35. Kxb4 Bd4 36. Ne4 Nxe4 37. dxe4 Bxe5 38. Kc5 Rd4 39. Kxc6 Rxa4 40. Kd5 Bg3 41. Rf3 Be1 42. e5 Ra5+ 43. Kd6 Ra7 44. e6 Ra6+ 45. Kd7 Bh4 46. Rxc3 Kf6 47. Rf3+ Ke5 48. Re3+ Kf5 49. e7 Bxe7 50. Rxe7 Ra7+ 51. Kd6 Ra2 52. c4 Ra6+ 53. Kd5 Ra5+ 54. c5 Ra1 55. c6 Rd1+ 56. Kc5 Rc1+ 57. Kb6 Rb1+ 58. Kc7 Rd1 59. Kc8 Kf6 60. Rd7 Ra1 61. c7 Ke6 62. Kd8 Ra8+ 63. c8Q Rxc8+ 64. Kxc8 Kf5 65. Re7 Kf6 66. Kd7 Kf5 67. Kd6 Kf4 68. Kd5 Kg3 69. Rf7 Kh2 70. g4 Kg3 71. g5 Kg4 72. g6 Kg5 73. g7 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.08"]
[Round "2"]
[White "Van Weersel, Brigitta"]
[Black "Groenewegen, Roy"]
[Result "1-0"]
[ECO "D38"]
[PlyCount "71"]
[EventDate "2000.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. Bf4 Nc6 5. Nf3 Bb4 6. Qc2 Ne4 7. e3 Nxc3 8. bxc3 Bd6 9. Bg5 f6 10. Bh4 Na5 11. cxd5 exd5 12. Bd3 Qe7 13. Bxh7 Bg4 14. Qg6+ Qf7 15. Qxg4 Rxh7 16. Bg3 Bxg3 17. Qxg3 0-0-0 18. Qf4 Kb8 19. Ng5 Qg8 20. Nxh7 Qxh7 21. 0-0 Nc4 22. a4 Nd2 23. Rfd1 Ne4 24. Rac1 Rh8 25. h3 Qh5 26. Qg4 Qf7 27. c4 f5 28. Qe2 g5 29. cxd5 g4 30. d6 gxh3 31. dxc7+ Kc8 32. g3 h2+ 33. Kg2 Nxg3 34. fxg3 Qd5+ 35. e4 fxe4 36. Qg4+ 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.07"]
[Round "1"]
[White "Groenewegen, Roy"]
[Black "Van Eijk, Sander"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "58"]
[EventDate "2000.08.07"]
[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. d3 Nf6 5. Nc3 d6 6. Be3 Bb6 7. Qd2 Be6 8. Bb3 Qd7 9. 0-0 0-0 10. Rad1 Bg4 11. Na4 Ba5 12. Nc3 Nd4 13. Bxd4 exd4 14. Nxd4 Bxd1 15. Rxd1 Ng4 16. h3 Bb6 17. Nce2 Ne5 18. Nf5 Kh8 19. Qg5 f6 20. Qg3 g6 21. Nfd4 Bxd4 22. Nxd4 Rae8 23. f4 Nc6 24. Ba4 Re7 25. Re1 a6 26. Qf2 b5 27. Bb3 Nxd4 28. Qxd4 Qc6 29. c3 Qc5 0-1

[Event "NED U12 op"]
[Site "Hengelo"]
[Date "1999.??.??"]
[Round "3"]
[White "De Vidal, Alexander"]
[Black "Groenewegen, Roy"]
[Result "1/2-1/2"]
[ECO "C47"]
[PlyCount "53"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[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. d3 Be7 5. Be2 d6 6. Be3 Be6 7. d4 0-0 8. d5 Nb4 9. dxe6 fxe6 10. a3 Nc6 11. 0-0 d5 12. Nd2 d4 13. Bxd4 exd4 14. Na2 e5 15. Bc4+ Kh8 16. f4 Qd6 17. f5 Qc5 18. Bd3 Rf7 19. c4 Qb6 20. b4 Raf8 21. c5 Bxc5 22. bxc5 Qxc5 23. Qc1 Qxc1 24. Raxc1 Nh5 25. Bc4 Rf6 26. Rb1 b6 27. Bd5 1/2-1/2

[Event "NED U12 op"]
[Site "Hengelo"]
[Date "1999.??.??"]
[Round "10"]
[White "Groenewegen, Roy"]
[Black "Pruijssers, Karin"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "45"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[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 h6 4. Nc3 Bc5 5. d3 Nf6 6. Be3 Bb6 7. 0-0 d6 8. Qd2 Be6 9. Bb3 Qd7 10. Rfe1 0-0-0 11. Bxb6 cxb6 12. Ba4 Bg4 13. Qe3 Kb8 14. Rad1 h5 15. h3 Bxf3 16. Qxf3 Nd4 17. Qxf6 Qxa4 18. Qxd8+ Rxd8 19. Nxa4 Nxc2 20. Re2 Nd4 21. Ree1 Nc2 22. Rf1 Nd4 23. Kh1 1-0

[Event "NED U12 op"]
[Site "Hengelo"]
[Date "1999.??.??"]
[Round "12"]
[White "Groenewegen, Roy"]
[Black "Zimmermann, Wim"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "60"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[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. Nc3 Nf6 5. d3 d6 6. 0-0 Bg4 7. Be3 0-0 8. Nd5 Nxd5 9. Bxd5 Qf6 10. c3 Bxf3 11. Qxf3 Qxf3 12. gxf3 Ne7 13. b4 Nxd5 14. exd5 Bb6 15. Kh1 c6 16. dxc6 bxc6 17. Rg1 g6 18. Bh6 Rfd8 19. Rg2 d5 20. a3 f6 21. Be3 Kf7 22. h4 d4 23. cxd4 Bxd4 24. Bxd4 Rxd4 25. Rc1 Rc8 26. b5 Rxd3 27. bxc6 Rd6 28. Rgg1 Rcxc6 29. Rxc6 Rxc6 30. Rd1 Ke6 0-1

[Event "NED U12 op"]
[Site "Hengelo"]
[Date "1999.??.??"]
[Round "1"]
[White "Klooster, Mitchell"]
[Black "Groenewegen, Roy"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "61"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[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. d3 Nf6 5. Nc3 d6 6. Bg5 Be6 7. Bb3 0-0 8. Nd5 Bxd5 9. Bxd5 Re8 10. c3 Qe7 11. Nh4 h6 12. Nf5 Qd8 13. Bxh6 g6 14. Qf3 Nxd5 15. exd5 Nb4 16. cxb4 Bxb4+ 17. Ke2 Qf6 18. Ne3 Qxf3+ 19. Kxf3 Bd2 20. Ke2 Bxe3 21. Bxe3 a6 22. f3 f5 23. g4 e4 24. gxf5 gxf5 25. Rhg1+ Kf7 26. dxe4 fxe4 27. Raf1 exf3+ 28. Rxf3+ Ke7 29. Rg7+ Kd8 30. Rff7 Rh8 31. Bg5+ 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "De Regt, Michel"]
[Black "Groenewegen, Roy"]
[Result "1/2-1/2"]
[ECO "C62"]
[PlyCount "39"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[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. Bb5 d6 4. d3 Be7 5. Be3 Nf6 6. 0-0 0-0 7. Nc3 a6 8. Ba4 Bg4 9. Re1 Nd4 10. Bxd4 exd4 11. Nb1 b5 12. Bb3 c5 13. Nbd2 Qd7 14. Qc1 a5 15. a4 b4 16. e5 dxe5 17. Nxe5 Qd6 18. Ndc4 Qc7 19. h3 Be6 20. Qd2 1/2-1/2

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Groenewegen, Roy"]
[Black "Groen, Robbert"]
[Result "1/2-1/2"]
[ECO "D30"]
[PlyCount "73"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e3 e6 2. d4 d5 3. c4 c5 4. f4 f5 5. Nf3 Nc6 6. Nc3 Nf6 7. Ne5 Ne4 8. Nxe4 Nxe5 9. fxe5 dxe4 10. d5 exd5 11. cxd5 Qa5+ 12. Qd2 Qxd2+ 13. Bxd2 Be7 14. Bb5+ Bd7 15. Bxd7+ Kxd7 16. a3 Rhe8 17. b4 cxb4 18. axb4 Rac8 19. Rc1 Rxc1+ 20. Bxc1 Bxb4+ 21. Bd2 Bxd2+ 22. Kxd2 Rxe5 23. Ra1 Rxd5+ 24. Kc3 Kd6 25. Rxa7 Rd1 26. Rxb7 Rh1 27. Rxg7 Rxh2 28. Kd4 Rh1 29. Rg5 Rg1 30. Rxf5 Rxg2 31. Rh5 Rg4 32. Rxh7 Ke6 33. Rh5 Rg3 34. Rh4 Kf6 35. Kd5 Rxe3 36. Rxe4 Rxe4 37. Kxe4 1/2-1/2

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Groenewegen, Roy"]
[Black "Kuipers, Stefan"]
[Result "1-0"]
[ECO "C48"]
[PlyCount "43"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[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. Bb5 Bc5 5. Bxc6 dxc6 6. Nxe5 Qd4 7. Nd3 Nxe4 8. Qe2 f5 9. f3 0-0 10. fxe4 fxe4 11. Nxe4 Re8 12. Ndxc5 Bf5 13. c3 Qd5 14. 0-0 Bxe4 15. Nxe4 Rxe4 16. Qf3 Ree8 17. Qxd5+ cxd5 18. d4 h6 19. Bf4 Rec8 20. Rae1 c6 21. Re7 b5 22. Be5 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Van Nooten, Stijn"]
[Black "Groenewegen, Roy"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "71"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[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. d4 Nxd4 4. Nxd4 exd4 5. Qxd4 Nf6 6. e5 Qe7 7. Be3 c5 8. Qc3 Nd5 9. Qb3 Nb4 10. f4 Qe6 11. Qxe6+ dxe6 12. Bd3 c4 13. Be4 f5 14. exf6 gxf6 15. Na3 f5 16. Bf3 Bg7 17. Bh5+ Kd7 18. 0-0-0+ Kc7 19. Nb5+ Kc6 20. Nxa7+ Kc7 21. a3 Nd5 22. Nb5+ Kc6 23. Nd4+ Bxd4 24. Bxd4 Rd8 25. Bf3 b5 26. c3 Kc7 27. Be5+ Kb6 28. Rhe1 Kc5 29. Kc2 Re8 30. Bxd5 exd5 31. Bd4+ Kd6 32. Rxe8 Kd7 33. Rh8 Kc6 34. Rxh7 Bb7 35. Re1 Rg8 36. Re6# 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Van de Put, Jeroen"]
[Black "Groenewegen, Roy"]
[Result "1-0"]
[ECO "C04"]
[PlyCount "45"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[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. Nd2 Nc6 4. c3 Bd6 5. Bd3 f5 6. e5 Be7 7. Ne2 Bg5 8. g3 Nge7 9. Ng1 0-0 10. Ngf3 Bh6 11. Nb3 Bxc1 12. Rxc1 Bd7 13. Qd2 a6 14. h4 h6 15. h5 b5 16. Nc5 Na5 17. b3 Bc6 18. Nxe6 Qd7 19. Nxf8 Rxf8 20. Nh4 Kh8 21. Ng6+ Nxg6 22. hxg6 Qe6 23. Rxh6+ 1-0

