[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "4"]
[White "Dannenberg, E."]
[Black "Groeneveld, Patrick"]
[Result "1/2-1/2"]
[ECO "C48"]
[PlyCount "88"]
[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. Bb5 Nf6 4. d3 Bc5 5. 0-0 d6 6. Bg5 Bg4 7. h3 Bh5 8. Bxc6+ bxc6 9. Nc3 h6 10. Bh4 0-0 11. Na4 Bb6 12. Nxb6 cxb6 13. Qe2 Qe7 14. Qe3 Qe6 15. Nd2 d5 16. Bxf6 d4 17. Qg3 Qxf6 18. Nc4 Rfe8 19. f4 Qg6 20. Qh2 f6 21. fxe5 fxe5 22. Nxe5 Qd6 23. Qf4 Rf8 24. Qg3 Rae8 25. Rxf8+ Rxf8 26. Rf1 Re8 27. Rf5 Bd1 28. c3 dxc3 29. bxc3 Bc2 30. c4 Qd4+ 31. Kh1 Rf8 32. Rxf8+ Kxf8 33. Qf4+ Kg8 34. Qf7+ Kh7 35. Qf5+ Kg8 36. Qe6+ Kh7 37. Qg6+ Kg8 38. Nxc6 Qa1+ 39. Kh2 Bxd3 40. Qf5 Bxc4 41. Ne7+ Kh8 42. Ng6+ Kg8 43. h4 Qf6 44. Qc8+ Kf7 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "7"]
[White "Gootjes, Joost"]
[Black "Groeneveld, Patrick"]
[Result "0-1"]
[ECO "C57"]
[PlyCount "74"]
[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 Nf6 4. Ng5 d5 5. exd5 Nd4 6. c3 b5 7. Bf1 Nxd5 8. Ne4 Bf5 9. cxd4 Bxe4 10. Bxb5+ Ke7 11. dxe5 Nb4 12. Ba4 Bxg2 13. Rg1 Nd3+ 14. Ke2 Nxe5 15. d4 Bf3+ 16. Ke1 Bxd1 17. dxe5 Bxa4 18. Nc3 Qd4 19. Nxa4 Qe4+ 20. Kf1 Qxa4 21. b3 Qd4 22. Rb1 Qd3+ 23. Kg2 Qe4+ 24. Kf1 Qxb1 25. Kg2 Qe4+ 26. f3 Qg6+ 27. Kf2 Qb6+ 28. Be3 Qa5 29. a4 Qxe5 30. Bg5+ Kd7 31. Rd1+ Kc8 32. Rd8+ Kb7 33. Rxa8 Kxa8 34. Be3 Qxh2+ 35. Kf1 Bb4 36. f4 Re8 37. Bd4 Re1# 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "9"]
[White "Groeneveld, Patrick"]
[Black "Gerritse, Youri"]
[Result "1/2-1/2"]
[ECO "A00"]
[PlyCount "124"]
[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. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. Nf3 d6 5. Bb2 Nc6 6. Nc3 Bf5 7. e3 0-0 8. Bc4 Re8 9. a3 Ba5 10. 0-0 a6 11. Bb3 Bg4 12. h3 Bh5 13. d4 d5 14. Ba4 Ne4 15. Na2 Qf6 16. Bb3 Rad8 17. g4 Ng5 18. Nxg5 Qxg5 19. Qf3 Re4 20. Kh2 Bxg4 21. Rg1 Bxf3 22. Rxg5 Re6 23. Nc3 Bxc3 24. Bxc3 Rdd6 25. Rag1 Rg6 26. Rxg6 Rxg6 27. Rxg6 hxg6 28. Kg3 Be4 29. f3 Bf5 30. h4 Kf8 31. Kf4 Ke7 32. Bb4+ Nxb4 33. axb4 c6 34. c4 dxc4 35. Bxc4 Be6 36. Bd3 Kd6 37. e4 Bb3 38. Ke3 Be6 39. Kd2 Bc8 40. Kc3 b6 41. Kb3 Be6+ 42. Kc3 b5 43. Kb2 Kc7 44. f4 Kb6 45. f5 gxf5 46. exf5 Bd5 47. Be2 Be4 48. Bg4 a5 49. Ka3 a4 50. h5 Kc7 51. f6 gxf6 52. h6 Kd6 53. Bf3 Bh7 54. Bh5 f5 55. Bxf7 f4 56. Bh5 Kd5 57. Bf3+ Kxd4 58. Bxc6 Kc4 59. Bb7 Kd3 60. Kb2 Ke3 61. Bc6 f3 62. Bxb5 f2 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "6"]
[White "Groeneveld, Patrick"]
[Black "Koelman, R."]
[Result "0-1"]
[ECO "C48"]
[PlyCount "86"]
[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 Nf6 3. Nc3 Nc6 4. Bb5 Bc5 5. Nxe5 Nxe5 6. d4 Bb4 7. dxe5 Bxc3+ 8. bxc3 Nxe4 9. Qf3 Nc5 10. Bc4 f6 11. 0-0 Qe7 12. exf6 Qxf6 13. Re1+ Ne6 14. Qe2 0-0 15. f3 Re8 16. Bb2 c6 17. Bb3 d5 18. Rab1 Bd7 19. c4 Qg6 20. cxd5 Nf4 21. dxc6+ Be6 22. Qf2 Nh3+ 23. Kf1 Nxf2 24. Kxf2 Bxb3 25. axb3 Qxc2+ 26. Kg3 Rxe1 27. Rxe1 Qxb2 28. cxb7 Rb8 29. f4 Qxb3+ 30. Kg4 Qxb7 31. g3 Qd7+ 32. Kh4 Rb4 33. Re5 Rb5 34. Re4 Qd8+ 35. Kg4 h5+ 36. Kh3 Qf6 37. Re3 g5 38. fxg5 Qxg5 39. Re1 Qg4+ 40. Kg2 Rb2+ 41. Kg1 Qd4+ 42. Kh1 Qf2 43. Re8+ Kf7 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "1"]
[White "Groeneveld, Patrick"]
[Black "Sewambar, Ashwin"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "42"]
[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 e6 2. Nf3 d5 3. Nc3 c5 4. exd5 exd5 5. Qe2+ Be7 6. Qb5+ Nc6 7. Qb3 Nf6 8. Bb5 a6 9. Bxc6+ bxc6 10. Ne2 0-0 11. 0-0 Qc7 12. Re1 Bf5 13. Ng3 Be6 14. Qe3 Ng4 15. Qe2 Bd6 16. d3 Rfe8 17. h3 Nxf2 18. Be3 Nxh3+ 19. gxh3 Bxg3 20. Rf1 Bxh3 21. Rfd1 d4 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "3"]
[White "Groeneveld, Patrick"]
[Black "Van Steenwinckel, Iris"]
[Result "0-1"]
[ECO "C49"]
[PlyCount "80"]
[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. Nc3 Nf6 4. Bb5 Bb4 5. d3 Nd4 6. Bc4 d6 7. Bd2 0-0 8. a3 Bc5 9. Bg5 Bg4 10. Nd5 b5 11. Ba2 Kh8 12. h3 Nxf3+ 13. gxf3 Bh5 14. Qe2 Rg8 15. 0-0-0 a5 16. Rhg1 c6 17. Ne3 Rb8 18. Nf5 a4 19. Rg2 b4 20. axb4 Bxb4 21. Rdg1 Bc5 22. Bxf6 Qxf6 23. Nxg7 Bxf3 24. Nh5 Qh6+ 25. Qd2 Qxd2+ 26. Kxd2 Rxg2 27. Rxg2 Bxg2 28. Bxf7 Rxb2 29. Kc1 Ba3 30. Kd2 Bxh3 31. Kc3 Rb7 32. Bc4 Bb4+ 33. Kb2 Be1+ 34. Ka3 Bd7 35. Kxa4 c5+ 36. Ka3 Bxf2 37. Nf6 Bd4 38. Nd5 Ra7+ 39. Kb3 Ba4+ 40. Ka2 Bxc2+ 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "5"]
[White "Groeneveld, Patrick"]
[Black "Zonneveld, Will"]
[Result "1/2-1/2"]
[ECO "C42"]
[PlyCount "51"]
[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. Nc3 Bb4 4. a3 Bxc3 5. bxc3 Nf6 6. d3 d6 7. Bg5 0-0 8. h3 b6 9. Nd2 Qe7 10. Qf3 Qe6 11. Bxf6 Qxf6 12. Qxf6 gxf6 13. Nf3 Be6 14. d4 Ne7 15. d5 Bd7 16. Bd3 Kh8 17. Kd2 Rg8 18. g4 Ng6 19. a4 a5 20. Bb5 Bc8 21. Bc6 Rb8 22. Bb5 Nf4 23. Rag1 Bb7 24. c4 Rbc8 25. Bc6 Bxc6 26. dxc6 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "8"]
[White "Kees, Maurice"]
[Black "Groeneveld, Patrick"]
[Result "1/2-1/2"]
[ECO "C65"]
[PlyCount "58"]
[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. Bb5 Nf6 4. d3 Bc5 5. Bxc6 bxc6 6. Nxe5 0-0 7. 0-0 Re8 8. Ng4 d6 9. Nxf6+ Qxf6 10. Nc3 Bd4 11. Bd2 Rb8 12. Rb1 Qg6 13. Kh1 Bxc3 14. Bxc3 Rb5 15. Qf3 Bg4 16. Qf4 Qg5 17. Qxg5 Rxg5 18. Rbe1 d5 19. Re3 h6 20. h3 Bd7 21. f4 Rg6 22. Be5 Re7 23. Rff3 Bc8 24. Bd4 a6 25. f5 dxe4 26. dxe4 Rd6 27. c3 Bb7 28. Kh2 Rdd7 29. Rg3 f6 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "2"]
[White "Snuverink, Michiel"]
[Black "Groeneveld, Patrick"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "113"]
[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 Nf6 4. d3 Bc5 5. Bg5 d6 6. Nc3 Bg4 7. Nd5 h6 8. Nxf6+ gxf6 9. Be3 Bb6 10. h3 Bh5 11. g4 Bg6 12. Qd2 Nd4 13. Nxd4 Bxd4 14. 0-0-0 h5 15. f4 hxg4 16. hxg4 Ke7 17. f5 Bh7 18. Rh6 Qg8 19. Rdh1 Qxg4 20. Rxh7 Rxh7 21. Rxh7 Rf8 22. Bxd4 exd4 23. Qh2 Qg5+ 24. Kb1 Qg4 25. a3 Qd1+ 26. Ka2 c6 27. Qh5 Qxh5 28. Rxh5 a5 29. a4 Rd8 30. Rh7 d5 31. exd5 cxd5 32. Bb3 Rd7 33. Rh4 Kd6 34. Rxd4 Ke5 35. c3 b6 36. Kb1 Kxf5 37. Rxd5+ Rxd5 38. Bxd5 Kg6 39. Kc2 Kg7 40. Kd2 Kf8 41. Ke3 Ke7 42. b4 Ke8 43. bxa5 bxa5 44. Ke4 Ke7 45. c4 Ke8 46. Kf5 Ke7 47. d4 Kd6 48. Kxf6 Kd7 49. Bxf7 Kd6 50. d5 Kc7 51. c5 Kd7 52. d6 Kc8 53. Ke7 Kb7 54. d7 Kc7 55. d8Q+ Kb7 56. Qb6+ Ka8 57. Bd5# 1-0

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "4"]
[White "Erwich, Marc"]
[Black "Groeneveld, Patrick"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1670"]
[PlyCount "59"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 f5 4. exf5 d6 5. dxe5 dxe5 6. Qxd8+ Nxd8 7. Nxe5 Bxf5 8. Bd3 Be6 9. 0-0 Nf6 10. Nc3 Bd6 11. Nc4 Be7 12. Bg5 h6 13. Bxf6 Bxf6 14. Ne4 Be7 15. f4 0-0 16. Ng3 Nc6 17. a3 Rad8 18. f5 Bc8 19. Be4 Bd7 20. Bxc6 Bxc6 21. Ne5 Be8 22. Rae1 Bf6 23. c3 Bb5 24. Rf2 Rd5 25. Ng6 Re8 26. Rxe8+ Bxe8 27. Re2 Bb5 28. c4 Bxc4 29. Re8+ Kf7 30. Rf8# 1-0

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "7"]
[White "Groeneveld, Patrick"]
[Black "Allamehzadeh, A."]
[Result "1-0"]
[ECO "C46"]
[PlyCount "79"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Nxe5 Bxf2+ 5. Kxf2 Nxe5 6. d4 Ng6 7. e5 f6 8. Qe1 Qe7 9. Bd3 c6 10. Bxg6+ hxg6 11. Bf4 f5 12. Rd1 b6 13. h3 Bb7 14. Rg1 0-0-0 15. Qe3 Nh6 16. Bg5 Qf7 17. Bxd8 Rxd8 18. Rde1 Re8 19. Ke2 f4 20. Qf2 d6 21. Kd1 dxe5 22. Rxe5 Rxe5 23. dxe5 Qf5 24. Re1 Kc7 25. Qd4 Bc8 26. Qd6+ Kb7 27. Qe7+ Qd7+ 28. Qxd7+ Bxd7 29. e6 Be8 30. Ne4 Kc7 31. Ng5 Kd6 32. Ke2 Ke7 33. Kf3 Nf5 34. c3 Nh4+ 35. Kf2 Nf5 36. Nf3 Ne3 37. Ng5 Kf6 38. Nf3 Kxe6 39. g3 Kf5 40. gxf4 1-0

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "13"]
[White "Groeneveld, Patrick"]
[Black "Bouwhuis, Jana"]
[Result "1-0"]
[ECO "B01"]
[PlyCount "41"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qe5+ 4. Qe2 Qxe2+ 5. Bxe2 Nf6 6. d4 Nc6 7. Nf3 Nb4 8. Bb5+ c6 9. Ba4 Bf5 10. 0-0 Bxc2 11. Bxc2 Nxc2 12. Rb1 Nb4 13. a3 Nbd5 14. Re1 e6 15. Bg5 Nxc3 16. bxc3 b6 17. a4 Be7 18. Ne5 c5 19. Nd3 cxd4 20. cxd4 0-0 21. d5 1-0

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "9"]
[White "Groeneveld, Patrick"]
[Black "Zonneveld, Will"]
[Result "1-0"]
[ECO "C66"]
[PlyCount "93"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 d6 5. d3 Be7 6. h3 0-0 7. 0-0 Be6 8. d4 a6 9. Ba4 b5 10. Bb3 Bd7 11. d5 Na7 12. Re1 Qc8 13. Bg5 Bxh3 14. gxh3 Qxh3 15. Bxf6 Bxf6 16. Nh2 Bg5 17. Qg4 Qxg4+ 18. Nxg4 f5 19. Nh2 f4 20. Nf3 Bh6 21. Ne2 g5 22. Rf1 g4 23. Nh4 Bg5 24. Nf5 h5 25. c3 h4 26. Bd1 f3 27. Nc1 Kf7 28. a4 h3 29. Ng3 Rh8 30. Kh2 Bf4 31. Nd3 Rag8 32. axb5 Nxb5 33. Rxa6 Ke7 34. Ra5 Rb8 35. Ba4 Nxc3 36. bxc3 Rb7 37. Bc6 Rbb8 38. Ra7 Kd8 39. Rfa1 Rc8 40. Ra8 Ke7 41. R1a7 Bxg3+ 42. fxg3 Rhf8 43. Nf2 Rxa8 44. Rxa8 Rxa8 45. Bxa8 Kf6 46. Nxg4+ Kg5 47. Nf2 1-0

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "8"]
[White "Harinck, Albert Jos"]
[Black "Groeneveld, Patrick"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "93"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Bg5 d6 6. c3 Bg4 7. Nbd2 0-0 8. b4 Bb6 9. Qb3 Bxf3 10. gxf3 h6 11. Be3 Qd7 12. Ke2 Rad8 13. Rag1 a6 14. Bxh6 Kh7 15. Bxg7 Nh5 16. Bxf8 Rxf8 17. Rg4 Nf4+ 18. Ke1 Nh3 19. Rf1 a5 20. b5 Ne7 21. Bxf7 Nf4 22. Rh4+ Kg7 23. Rg1+ Kf6 24. Rh6+ Neg6 25. Rhxg6+ Nxg6 26. Rxg6+ Ke7 27. Be6 Qe8 28. Rg7+ Kd8 29. Rd7+ Qxd7 30. Bxd7 Kxd7 31. Ke2 Rh8 32. Qf7+ Kc8 33. Nc4 Kb8 34. Nxb6 cxb6 35. Qf6 Rxh2 36. Qxd6+ Ka7 37. Qxe5 Rh1 38. d4 Ra1 39. Qd5 Rh1 40. e5 Rh5 41. c4 Rg5 42. e6 Rg7 43. Qd7 Rg8 44. e7 a4 45. e8Q a3 46. Qee7 Rh8 47. Qxb7# 1-0

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "6"]
[White "Thissen, Timon"]
[Black "Groeneveld, Patrick"]
[Result "0-1"]
[ECO "C48"]
[WhiteElo "1815"]
[PlyCount "63"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bc5 5. 0-0 d6 6. d3 Bg4 7. Bxc6+ bxc6 8. h3 Bh5 9. Bg5 h6 10. Bh4 0-0 11. a3 a6 12. b4 Bd4 13. Qd2 Bxf3 14. gxf3 g5 15. Bg3 Qd7 16. Kg2 a5 17. Rad1 axb4 18. axb4 Rfe8 19. Ne2 Bb6 20. Rh1 Kf8 21. h4 g4 22. Qxh6+ Ke7 23. h5 Rh8 24. Qg5 Rag8 25. Qd2 gxf3+ 26. Kxf3 Rxh5 27. Rxh5 Nxh5 28. Qh6 Nxg3 29. fxg3 Qg4+ 30. Kg2 Qxe2+ 31. Kh3 Qxd1 32. Qh4+ 0-1

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "10"]
[White "Van Duijvenbode, Harrie"]
[Black "Groeneveld, Patrick"]
[Result "1-0"]
[ECO "C58"]
[PlyCount "96"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ Bd7 7. Bxd7+ Nxd7 8. d4 Bd6 9. 0-0 Nc4 10. b3 Ncb6 11. dxe5 Bxe5 12. Nf3 Bxa1 13. Re1+ Kf8 14. d6 c6 15. Re7 Bf6 16. Bg5 Bxg5 17. Nxg5 Nd5 18. Rxf7+ Kg8 19. Rxg7+ Kxg7 20. Ne6+ Kf7 21. Nxd8+ Raxd8 22. Qf3+ N7f6 23. h3 Rxd6 24. Nc3 Nxc3 25. Qxc3 Rhd8 26. Qf3 Rd2 27. g4 Rxc2 28. g5 Rg8 29. Qxf6+ Ke8 30. Qe6+ Kf8 31. Qf5+ Ke7 32. Qxc2 Rxg5+ 33. Kf1 Kd7 34. Qxh7+ Kc8 35. Qh8+ Kd7 36. Qh7+ Kc8 37. Qe7 Rd5 38. h4 Rd2 39. Qf8+ Rd8 40. Qf5+ Kc7 41. h5 Rd5 42. Qxd5 cxd5 43. h6 Kc6 44. h7 d4 45. h8Q Kd5 46. Ke2 b5 47. Kd3 Kc5 48. Qxd4+ Kc6 1-0

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1994.??.??"]
[Round "5"]
[White "Groeneveld, Patrick"]
[Black "Leenhouts, Koen"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "66"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 5. Be3 cxd4 6. Nxd4 Bd7 7. Bb5 Nxd4 8. Bxd7+ Qxd7 9. Bxd4 Bb4+ 10. Bc3 Bxc3+ 11. Nxc3 Ne7 12. Qg4 0-0 13. 0-0 Rac8 14. Rfd1 Qc6 15. Qd4 a6 16. Rd2 Nf5 17. Qb4 f6 18. exf6 Rxf6 19. Qa4 b5 20. Qb4 Rg6 21. g3 d4 22. Ne2 e5 23. Kf1 Qh1+ 24. Ng1 Qxh2 25. Qb3+ Kh8 26. Rd3 Rf6 27. f4 Ne3+ 28. Rxe3 dxe3 29. Qxe3 Rxc2 30. Rc1 Qg2+ 31. Ke1 Rxc1+ 32. Qxc1 Qxg1+ 33. Kd2 Rd6+ 0-1

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1994.??.??"]
[Round "4"]
[White "Muris, Saskia"]
[Black "Groeneveld, Patrick"]
[Result "0-1"]
[ECO "C44"]
[PlyCount "46"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[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 f5 4. Nc3 Bb4 5. d5 Nce7 6. Bd3 f4 7. Nxe5 d6 8. Nf3 Ng6 9. Bd2 Bg4 10. h3 Bh5 11. Be2 Bxf3 12. Bxf3 Nh4 13. a3 Bc5 14. 0-0 Qg5 15. Bh5+ g6 16. Bf3 0-0-0 17. g3 Qxg3+ 18. Kh1 Qxh3+ 19. Kg1 Nxf3+ 20. Qxf3 Qxf3 21. Kh2 Bxf2 22. Rae1 Qg3+ 23. Kh1 Qh3# 0-1

[Event "NED-ch U12"]
[Site "Hengelo"]
[Date "1994.??.??"]
[Round "11"]
[White "Van der Aalst, Paul"]
[Black "Groeneveld, Patrick"]
[Result "1-0"]
[ECO "D50"]
[PlyCount "35"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 a6 5. Bxf6 gxf6 6. e3 Nc6 7. Nf3 e5 8. Be2 e4 9. Nd2 Be6 10. 0-0 Rg8 11. g3 f5 12. f3 exf3 13. Nxf3 dxc4 14. d5 Qc8 15. dxc6 bxc6 16. Ne5 Qb7 17. Bxc4 Bxc4 18. Qd7# 1-0

