[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "2005.08.13"]
[Round "9"]
[White "Weijermars, Boudewijn"]
[Black "Lambregts, Chris"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "1781"]
[BlackElo "1491"]
[PlyCount "65"]
[EventDate "2005.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Be3 Nf6 6. Nd2 Bb4 7. c3 Ba5 8. Bd3 Bb6 9. Nc4 Bxd4 10. Nd6+ Ke7 11. Nxc8+ Rxc8 12. cxd4 d6 13. 0-0 Nb4 14. a3 Nxd3 15. Qxd3 Ng4 16. Bg5+ f6 17. Qg3 fxg5 18. Qxg4 h6 19. f4 Qb6 20. fxg5 Qxd4+ 21. Kh1 Rhf8 22. Qh4 Rxf1+ 23. Rxf1 hxg5 24. Qxg5+ Kd7 25. Qb5+ Kd8 26. Qxb7 Qf6 27. Qxc8+ Kxc8 28. Rxf6 gxf6 29. h4 Kd7 30. g4 Ke7 31. Kg2 Kf7 32. b4 Kg6 33. a4 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "2005.08.12"]
[Round "8"]
[White "Bonte, Holger"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "1848"]
[BlackElo "1781"]
[PlyCount "93"]
[EventDate "2005.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Nd5 Nbd7 10. Qd2 b5 11. Na5 Bxd5 12. exd5 Nc5 13. Nc6 Qd7 14. 0-0-0 Rc8 15. Bxc5 dxc5 16. Nxe5 Qd6 17. Nc6 Qxd5 18. Qxd5 Nxd5 19. Nxe7 Nxe7 20. a4 c4 21. Rd6 Ra8 22. b3 cxb3 23. axb5 0-0 24. bxa6 Rfc8 25. c4 Nc6 26. c5 Na5 27. Kb2 Rxc5 28. Bd3 Nc4+ 29. Bxc4 Rxc4 30. Kxb3 Rc5 31. Kb4 Rc2 32. Rhd1 Rb8+ 33. Ka3 Rc3+ 34. Ka2 Rc7 35. Ka1 Rcc8 36. Rb1 Ra8 37. Ka2 g6 38. Rb7 Kg7 39. a7 Rf8 40. Kb3 Rfc8 41. Rdd7 Rf8 42. Kb4 Kf6 43. Rb6+ Ke5 44. Ka5 h5 45. Ka6 Rfc8 46. Rxf7 Rc2 47. Kb7 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "2005.08.12"]
[Round "7"]
[White "Miedema, David"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "A85"]
[BlackElo "1781"]
[PlyCount "50"]
[EventDate "2005.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 f5 5. Nf3 Nf6 6. h3 Bd6 7. Bd2 0-0 8. Qc2 Ne4 9. Ne5 Bxe5 10. dxe5 Nd7 11. Nxe4 fxe4 12. Bb4 c5 13. Bc3 Qc7 14. 0-0-0 Nb6 15. cxd5 exd5 16. f4 exf3 17. gxf3 Bf5 18. e4 Bg6 19. Rg1 Qf7 20. e6 Qxe6 21. Bd3 c4 22. Be2 dxe4 23. fxe4 Qxe4 24. Qxe4 Bxe4 25. Rxg7+ Kh8 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "2005.08.11"]
[Round "6"]
[White "Weijermars, Boudewijn"]
[Black "Mazajchik, Tim"]
[Result "1/2-1/2"]
[ECO "B70"]
[WhiteElo "1781"]
[BlackElo "2213"]
[PlyCount "40"]
[EventDate "2005.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. g3 g6 7. Bg2 Nxd4 8. Qxd4 Bg7 9. e5 Nd7 10. Qa4 dxe5 11. Be3 e4 12. Bxe4 0-0 13. 0-0 Nb6 14. Qb5 Bd7 15. Qd3 Bc6 16. Rad1 Qxd3 17. Rxd3 Bxe4 18. Nxe4 Bxb2 19. Rb1 Be5 20. Bxb6 axb6 1/2-1/2

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "2005.08.10"]
[Round "5"]
[White "Nabuurs, Mart"]
[Black "Weijermars, Boudewijn"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1915"]
[BlackElo "1781"]
[PlyCount "62"]
[EventDate "2005.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 e6 5. d3 Ne7 6. Be3 b6 7. Qd2 Bb7 8. Bh6 0-0 9. h4 Nec6 10. Bxg7 Kxg7 11. h5 g5 12. h6+ Kh8 13. e5 f6 14. exf6 Qxf6 15. Nh3 Qe5+ 16. Qe3 Qxe3+ 17. fxe3 g4 18. Nf2 Na6 19. Rh4 Nab4 20. Rc1 Na5 21. Bxb7 Nxb7 22. Rxg4 Rg8 23. Ke2 Nd6 24. e4 Nf7 25. a3 Nc6 26. Rh1 Nfe5 27. Rxg8+ Rxg8 28. Rh3 Nd4+ 29. Kd1 Rf8 30. Rh2 Rf3 31. Rg2 Rf6 1/2-1/2

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "2005.08.10"]
[Round "4"]
[White "Weijermars, Boudewijn"]
[Black "Uithof, Kasper"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "1781"]
[BlackElo "1603"]
[PlyCount "47"]
[EventDate "2005.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nf6 8. Qd2 0-0 9. 0-0-0 Bd7 10. g4 a6 11. h4 Rc8 12. h5 Ne5 13. hxg6 fxg6 14. Bh6 Nc4 15. Bxc4+ Rxc4 16. Bxg7 Kxg7 17. Qh6+ Kh8 18. g5 Rf7 19. gxf6 exf6 20. Qxg6 Rg7 21. Qh5 Qb6 22. Nb3 Qe3+ 23. Kb1 Be6 24. Rxd6 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "2005.08.09"]
[Round "2"]
[White "Naarding, Eelco"]
[Black "Weijermars, Boudewijn"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "1482"]
[BlackElo "1781"]
[PlyCount "74"]
[EventDate "2005.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. c4 c6 4. Bf4 f5 5. e3 Nf6 6. Nc3 Bd6 7. Bxd6 Qxd6 8. Be2 Nbd7 9. Rc1 0-0 10. 0-0 Ne4 11. cxd5 exd5 12. Bd3 h6 13. Qc2 g6 14. Na4 Kg7 15. Nc5 Ndxc5 16. dxc5 Qf6 17. Bxe4 fxe4 18. Nd4 Qg5 19. Kh1 Kh7 20. h3 Qh4 21. Kh2 Bd7 22. Qe2 g5 23. f3 Kh8 24. fxe4 g4 25. g3 Qxh3+ 26. Kg1 Qxg3+ 27. Kh1 dxe4 28. Rce1 Qh4+ 29. Qh2 Qxh2+ 30. Kxh2 Kg7 31. Rf4 Rxf4 32. exf4 Re8 33. Kg3 Kf6 34. Kh4 Bf5 35. Kh5 Rd8 36. Ne2 Rd3 37. Nc3 Rh3# 0-1

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "2005.08.09"]
[Round "3"]
[White "Van der Velden, Bram"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "D09"]
[WhiteElo "2068"]
[BlackElo "1781"]
[PlyCount "49"]
[EventDate "2005.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Be6 6. Nbd2 Qd7 7. Bg2 h5 8. Ng5 Bf5 9. h4 0-0-0 10. Qa4 Nb4 11. Qxa7 Nc2+ 12. Kd1 c6 13. e6 fxe6 14. Nde4 e5 15. Rb1 d3 16. e3 d2 17. Qa8+ Kc7 18. Qa5+ Kc8 19. Qxd2 Qxd2+ 20. Bxd2 Nh6 21. Ke2 Bb4 22. Bxb4 Nxb4 23. a3 Na6 24. Rbd1 Ng4 25. Nd6+ 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "2005.08.08"]
[Round "1"]
[White "Weijermars, Boudewijn"]
[Black "Van den Berg, Hilke"]
[Result "0-1"]
[ECO "B72"]
[WhiteElo "1781"]
[BlackElo "2163"]
[PlyCount "100"]
[EventDate "2005.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be3 Ng4 7. Qd2 Nxe3 8. Qxe3 g6 9. Bc4 Bg7 10. Nb3 0-0 11. 0-0-0 Ne5 12. Be2 Be6 13. h4 Rc8 14. Kb1 Bc4 15. h5 Bxe2 16. Qxe2 Nc4 17. hxg6 hxg6 18. Rh3 b5 19. Rdh1 Nxb2 20. Kxb2 Rxc3 21. Rxc3 b4 22. f4 Qc7 23. f5 Qxc3+ 24. Kc1 Rc8 25. fxg6 fxg6 26. Qd2 Qxd2+ 27. Kxd2 Kf7 28. Rh7 Rc3 29. Rh3 Rxh3 30. gxh3 Ke6 31. Ke3 Bh6+ 32. Kf3 Kd7 33. Ke2 Kc6 34. Kd3 Kb5 35. Nd4+ Ka4 36. Nc6 a5 37. Kc4 e6 38. Nd4 Ka3 39. Nxe6 Kxa2 40. Kb5 Bd2 41. Nd4 Kb2 42. Ka4 Be3 43. Nb5 Kxc2 44. Nxd6 b3 45. Nc4 b2 46. Nxb2 Kxb2 47. Kxa5 Kc3 48. e5 Kd4 49. e6 Bg5 50. Kb5 Kd5 0-1

[Event "Stork Young Masters op"]
[Site "Hengelo"]
[Date "2004.08.14"]
[Round "9"]
[White "Weijermars, Boudewijn"]
[Black "Nederlof, Jesper"]
[Result "0-1"]
[ECO "C11"]
[PlyCount "78"]
[EventDate "2004.08.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bc5 9. Be2 Nxd4 10. Bxd4 a6 11. 0-0 Qb6 12. Bxc5 Qxc5+ 13. Kh1 b5 14. Bf3 Nb6 15. Qd3 Bd7 16. Ne2 Rc8 17. Rac1 Na4 18. b3 Nc3 19. Nxc3 Qxc3 20. Be2 Ke7 21. Qxc3 Rxc3 22. Bd3 h6 23. g3 Rhc8 24. Kg2 b4 25. Bxa6 Rxc2+ 26. Rxc2 Rxc2+ 27. Rf2 Rc3 28. Rd2 Kd8 29. Kf2 Kc7 30. Ke2 Kb6 31. Bd3 Bb5 32. Ke3 f5 33. Ke2 Rxd3 34. Rxd3 Kc6 35. Ke3 Bxd3 36. Kxd3 Kc5 37. Ke3 d4+ 38. Kd3 Kd5 39. h3 h5 0-1

[Event "Stork Young Masters op"]
[Site "Hengelo"]
[Date "2004.08.13"]
[Round "7"]
[White "Severijnen, Arjon"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B01"]
[PlyCount "69"]
[EventDate "2004.08.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nc3 g6 6. h3 Bg7 7. Nf3 Nc6 8. Be3 0-0 9. Be2 e5 10. d5 Ne7 11. 0-0 f5 12. Qd2 Re8 13. Bg5 f4 14. Ne4 Rf8 15. Rfd1 h6 16. Bxe7 Qxe7 17. c5 Nd7 18. d6 cxd6 19. Nxd6 Nf6 20. Bc4+ Kh7 21. Re1 Ne8 22. Rad1 Bf5 23. Bd5 Rb8 24. Qe2 b6 25. b4 bxc5 26. bxc5 Kh8 27. Nxe5 Bxe5 28. Qxe5+ Qxe5 29. Rxe5 Nxd6 30. cxd6 Rbd8 31. Bb3 f3 32. g4 Bc8 33. Re7 Bd7 34. Rc1 Bb5 35. Rcc7 1-0

[Event "Stork Young Masters op"]
[Site "Hengelo"]
[Date "2004.08.13"]
[Round "8"]
[White "Van Lenthe, Gerwin"]
[Black "Weijermars, Boudewijn"]
[Result "0-1"]
[ECO "D94"]
[PlyCount "80"]
[EventDate "2004.08.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nc3 Bg7 5. Nf3 0-0 6. Be2 cxd4 7. exd4 d5 8. Be3 Nc6 9. 0-0 dxc4 10. Bxc4 Ng4 11. a3 Qc7 12. Nd5 Qd8 13. Nc3 e5 14. d5 Ne7 15. d6 Nf5 16. Ng5 Nfxe3 17. Nxf7 Rxf7 18. Bxf7+ Kxf7 19. fxe3+ Kg8 20. Ne4 Qb6 21. Qf3 Qxe3+ 22. Qxe3 Nxe3 23. Rf3 Bh6 24. d7 Bxd7 25. Nf6+ Kg7 26. Nxd7 e4 27. Rf2 Rd8 28. Nc5 Re8 29. Nxb7 Nf5 30. Rd1 Be3 31. Rd7+ Kf6 32. Kf1 Bxf2 33. Kxf2 Rc8 34. g4 Rc2+ 35. Ke1 Nh4 36. h3 e3 37. g5+ Kxg5 38. Re7 Kf4 39. Nd6 Nf3+ 40. Kf1 Rf2# 0-1

[Event "Stork Young Masters op"]
[Site "Hengelo"]
[Date "2004.08.13"]
[Round "7"]
[White "Weijermars, Boudewijn"]
[Black "Bosschem, Tim"]
[Result "1/2-1/2"]
[ECO "B80"]
[PlyCount "130"]
[EventDate "2004.08.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 d6 4. d4 cxd4 5. Nxd4 Nf6 6. f3 e6 7. Be3 Be7 8. Qd2 a6 9. 0-0-0 Nxd4 10. Bxd4 b5 11. Kb1 Bb7 12. g4 h6 13. Bd3 e5 14. Be3 b4 15. Ne2 d5 16. g5 hxg5 17. Ng3 dxe4 18. fxe4 g6 19. Bxg5 Nh5 20. Be3 Qc7 21. Nxh5 Rxh5 22. Qf2 Bh4 23. Qe2 Qc6 24. Rhf1 Rh7 25. Qg4 Bc8 26. Qf3 Be6 27. Qe2 Qa4 28. b3 Qc6 29. Bc1 Be7 30. Bb2 f6 31. Qg2 g5 32. Qe2 Rh4 33. Qg2 Bh3 34. Qf2 Bxf1 35. Rxf1 0-0-0 36. Qa7 Rxd3 37. cxd3 Bc5 38. Qg7 Rxh2 39. Rxf6 Rh1+ 40. Bc1 Bd6 41. Qg8+ Kb7 42. Qc4 g4 43. Rg6 Rg1 44. Kc2 Qxc4+ 45. bxc4 Bc5 46. Bb2 Bd4 47. Bxd4 exd4 48. e5 g3 49. e6 Kc7 50. Rg7+ Kd8 51. e7+ Ke8 52. c5 Re1 53. Rxg3 Kxe7 54. Rg6 Re5 55. Kb3 Rxc5 56. Rxa6 Rc3+ 57. Kxb4 Rxd3 58. Kc4 Rd1 59. Ra3 Kd6 60. Rd3 Rxd3 61. Kxd3 Kc5 62. a4 Kb4 63. Kxd4 Kxa4 64. Kd5 Ka3 65. Kd4 Ka4 1/2-1/2

[Event "Stork Young Masters op"]
[Site "Hengelo"]
[Date "2004.08.11"]
[Round "5"]
[White "Pruijssers, Karin"]
[Black "Weijermars, Boudewijn"]
[Result "0-1"]
[ECO "A48"]
[PlyCount "80"]
[EventDate "2004.08.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 g6 4. Bf4 Bg7 5. e3 0-0 6. Be2 b6 7. 0-0 Bb7 8. Nc3 cxd4 9. Nxd4 d6 10. Bg3 Nbd7 11. Bf3 Bxf3 12. Qxf3 Rc8 13. Nc6 Qe8 14. Nxa7 Rxc4 15. Nab5 Nh5 16. Rac1 Nxg3 17. Qxg3 Ne5 18. Rfd1 Qa8 19. Na3 Rg4 20. Qh3 f5 21. Kh1 Nf7 22. Qf3 Ng5 23. Qxa8 Rxa8 24. Nab5 Rc4 25. a3 Rac8 26. b3 Rxc3 27. Nxc3 Rxc3 28. Rxc3 Bxc3 29. a4 Ne4 30. Kg1 Nc5 31. Rc1 Be5 32. Rc4 Nxb3 33. Rb4 Nc5 34. Rxb6 Nxa4 35. Rb7 Kf7 36. f4 Bf6 37. h3 Nc3 38. g4 Nd1 39. Rb3 fxg4 40. hxg4 Nxe3 0-1

[Event "Stork Young Masters op"]
[Site "Hengelo"]
[Date "2004.08.11"]
[Round "4"]
[White "Weijermars, Boudewijn"]
[Black "Wakkee, Colijn"]
[Result "0-1"]
[ECO "C30"]
[PlyCount "50"]
[EventDate "2004.08.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Bc5 3. f4 d6 4. Nf3 Nc6 5. Bb5 Bg4 6. h3 Bd7 7. Na4 Qe7 8. Nxc5 dxc5 9. d3 f6 10. c3 0-0-0 11. 0-0 exf4 12. Bxf4 g5 13. Bh2 h5 14. d4 g4 15. d5 gxf3 16. dxc6 Bxc6 17. Qa4 Bxb5 18. Qxb5 fxg2 19. Rfd1 Nh6 20. Qa5 Kb8 21. b4 b6 22. Qa6 Nf7 23. Qc4 Ng5 24. Rxd8+ Rxd8 25. bxc5 Rd2 0-1

[Event "Stork Young Masters op"]
[Site "Hengelo"]
[Date "2004.08.10"]
[Round "2"]
[White "Weijermars, Boudewijn"]
[Black "Van Lenthe, Bernard"]
[Result "1-0"]
[ECO "C28"]
[PlyCount "51"]
[EventDate "2004.08.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. d3 d6 5. f4 Bg4 6. Nge2 Be7 7. h3 Bd7 8. Be3 0-0 9. Qd2 a6 10. g4 b5 11. Bb3 Na5 12. f5 Ne8 13. g5 Nxb3 14. axb3 b4 15. Na2 a5 16. Rg1 f6 17. h4 c6 18. g6 d5 19. gxh7+ Kxh7 20. Rg6 dxe4 21. dxe4 Nd6 22. 0-0-0 Qc7 23. Bh6 Rf7 24. Bxg7 Nxe4 25. Qh6+ Kg8 26. Qh8# 1-0

[Event "Stork Young Masters op"]
[Site "Hengelo"]
[Date "2004.08.10"]
[Round "3"]
[White "Welling, Wouter"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "A57"]
[PlyCount "49"]
[EventDate "2004.08.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. e3 axb5 6. Bxb5 Qa5+ 7. Nc3 Bb7 8. Bd2 Na6 9. Qb3 Nb4 10. Bc4 Ba6 11. Rc1 Rb8 12. Na4 d6 13. a3 Ne4 14. Bxb4 cxb4 15. Ke2 Nd2 16. Kxd2 bxa3+ 17. Qc3 Qxa4 18. b3 Qb4 19. Qxb4 Rxb4 20. Bxa6 Rxb3 21. Nf3 a2 22. Rc8+ Kd7 23. Re1 Rb2+ 24. Kd3 Rb3+ 25. Ke2 1-0

[Event "Stork Young Masters op"]
[Site "Hengelo"]
[Date "2004.08.09"]
[Round "1"]
[White "Breukelman, Jan"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2064"]
[PlyCount "50"]
[EventDate "2004.08.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Nbd7 4. c4 a6 5. Ba4 b5 6. cxb5 Nxd5 7. Nf3 e6 8. 0-0 Be7 9. Nc3 N5b6 10. d4 Nxa4 11. Qxa4 Nb6 12. Qc2 0-0 13. Bf4 axb5 14. Nxb5 Ba6 15. Bxc7 Qc8 16. a4 Bxb5 17. axb5 Rxa1 18. Rxa1 Nd5 19. Rc1 Qxc7 20. Qxc7 Nxc7 21. Rxc7 Ra8 22. Kf1 Bd8 23. Rd7 f6 24. Nd2 e5 25. dxe5 fxe5 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2003.08.09"]
[Round "9"]
[White "Zimmermann, Dries"]
[Black "Weijermars, Boudewijn"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "63"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nxd5 Qxd5 5. Nf3 Bg4 6. Be2 Nc6 7. d3 0-0-0 8. Bf4 f6 9. 0-0 g5 10. Be3 h5 11. Nd2 Bxe2 12. Qxe2 h4 13. Qf3 Qd7 14. Rfb1 g4 15. Qe4 h3 16. g3 f5 17. Qh1 Nd4 18. Bxd4 Qxd4 19. Nb3 Qf6 20. Nc5 c6 21. b4 e5 22. Re1 Bxc5 23. bxc5 Qe7 24. Re2 Qxc5 25. Rae1 Rhe8 26. Kf1 Re7 27. f4 Rde8 28. fxe5 Rxe5 29. c4 Rxe2 30. Rxe2 Rxe2 31. Kxe2 Qe5+ 32. Kd2 0-1

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2003.08.08"]
[Round "7"]
[White "Ten Hagen, Florian"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "A52"]
[PlyCount "65"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. Bf4 Bc5 6. e3 Qe7 7. Nc3 Ngxe5 8. Nxe5 Nxe5 9. Be2 d6 10. 0-0 Be6 11. a3 0-0 12. Nd5 Qd7 13. b4 c6 14. bxc5 cxd5 15. cxd5 Bf5 16. Bxe5 dxe5 17. Qb3 Rac8 18. Rac1 Rfd8 19. Rfd1 Bg6 20. Bb5 Qg4 21. f3 Qg5 22. e4 f5 23. d6+ Bf7 24. Bc4 Bxc4 25. Rxc4 Kf8 26. exf5 Qxf5 27. Qxb7 Qg5 28. Qe4 Kg8 29. c6 Qf6 30. d7 Rc7 31. Rc5 Kf7 32. Rxe5 Qxc6 33. Qf4+ 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2003.08.08"]
[Round "8"]
[White "Weijermars, Boudewijn"]
[Black "Goedbloed, Joost"]
[Result "0-1"]
[ECO "C27"]
[PlyCount "88"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 Nc6 5. f4 d6 6. h3 Be6 7. Bb3 d5 8. exd5 Nxd5 9. Nf3 Nxc3 10. bxc3 0-0 11. Bxe6 fxe6 12. fxe5 Nxe5 13. d4 Nxf3+ 14. gxf3 Bd6 15. Qe2 e5 16. Be3 exd4 17. cxd4 Re8 18. Kd2 Kh8 19. Qd3 Qh4 20. Rag1 Bf4 21. Re1 Qf2+ 22. Re2 Qxf3 23. Rhe1 Bxe3+ 24. Rxe3 Rxe3 25. Rxe3 Qd5 26. Qe4 Qa5+ 27. Kd3 Qa3+ 28. Kd2 Qb4+ 29. c3 Qb2+ 30. Qc2 Qb6 31. Qb3 Qc6 32. Qe6 Qg2+ 33. Kd3 Qf1+ 34. Re2 Rf8 35. Kd2 h6 36. Qe3 Qb1 37. Qe6 Qb2+ 38. Kd3 Rf3+ 39. Re3 Rxe3+ 40. Qxe3 Qxa2 41. Qe8+ Qg8 42. Qd7 Qh7+ 43. Ke3 g5 44. d5 Qxd7 0-1

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2003.08.07"]
[Round "6"]
[White "Weijermars, Boudewijn"]
[Black "Van Dommelen, Susan"]
[Result "1-0"]
[ECO "B45"]
[PlyCount "87"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be3 Bb4 7. f3 d5 8. Bb5 Bd7 9. Bxc6 Bxc6 10. e5 Nd7 11. f4 0-0 12. 0-0 Nc5 13. f5 f6 14. Qg4 Bxc3 15. bxc3 Bd7 16. fxe6 Nxe6 17. Nxe6 Qe7 18. Bc5 Qxc5+ 19. Nxc5 Bxg4 20. exf6 b6 21. Nd3 gxf6 22. h3 Bd7 23. Nf4 Bc6 24. Rad1 Bb5 25. Rf3 Bc4 26. a3 Kf7 27. Nxd5 Rad8 28. Rxf6+ Kg7 29. Rxf8 Kxf8 30. Ne3 Rxd1+ 31. Nxd1 Ke7 32. Kf2 Ke6 33. Ne3 Ba6 34. g4 Bc8 35. Kf3 Ke5 36. Nd1 b5 37. Nb2 h6 38. Ke3 a6 39. c4 Be6 40. Nd3+ Kd6 41. c5+ Kc6 42. Kd4 a5 43. c3 Bc4 44. Ne5+ 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2003.08.06"]
[Round "5"]
[White "Mottart, Florian"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "89"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 Nc6 5. Nf3 Nf6 6. Nc3 Bb4 7. Bd3 d5 8. e5 Ne4 9. Bd2 Nxd2 10. Qxd2 Qb6 11. 0-0 Bd7 12. Be2 Na5 13. Rfd1 Rc8 14. Rac1 Nc4 15. Bxc4 Rxc4 16. a3 Be7 17. Na2 Ba4 18. Rxc4 dxc4 19. Rc1 Bb3 20. Nc3 0-0 21. d5 exd5 22. Nxd5 Qe6 23. Nxe7+ Qxe7 24. Qe2 b5 25. Nd4 Ba4 26. Kh1 Qc5 27. Nf5 g6 28. Ng3 a5 29. f4 Qd4 30. Ne4 Rd8 31. h3 Qd3 32. Nf6+ Kg7 33. Qg4 Qf5 34. Qh4 Rh8 35. Rc3 h5 36. Rg3 Bc2 37. Rg5 Qd3 38. e6 fxe6 39. Rxb5 Qd1+ 40. Kh2 Rf8 41. Ne8+ Kh8 42. Qe7 Rg8 43. Nf6 g5 44. Rxg5 Rxg5 45. Qf8+ 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2003.08.06"]
[Round "4"]
[White "Weijermars, Boudewijn"]
[Black "Euser, Kasper"]
[Result "0-1"]
[ECO "C25"]
[PlyCount "54"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Bc5 3. f4 exf4 4. Nf3 d6 5. d4 Bb6 6. Bxf4 Bg4 7. Be3 Nf6 8. Qd2 Qe7 9. h3 Bh5 10. g4 Bg6 11. e5 dxe5 12. Nxe5 Nbd7 13. Nxd7 Qxd7 14. Bg2 0-0-0 15. 0-0-0 Rhe8 16. Rhe1 Ba5 17. Bg5 Rxe1 18. Qxe1 Re8 19. Qh1 c6 20. Bxf6 gxf6 21. Ne4 Qe6 22. d5 cxd5 23. Nc3 Bxc3 24. bxc3 Qe3+ 25. Kb2 Qb6+ 26. Kc1 Re2 27. Rd2 Qe3 0-1

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2003.08.05"]
[Round "3"]
[White "Tan, Matthew"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2158"]
[PlyCount "55"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Be3 g6 6. Nc3 Bg7 7. Qd2 0-0 8. 0-0-0 Nc6 9. Be2 e5 10. d5 Ne7 11. g4 f5 12. f3 f4 13. Bf2 Bd7 14. c5 Nbc8 15. Ne4 b6 16. Bc4 Kh8 17. d6 cxd6 18. Nxd6 Nxd6 19. Qxd6 Bc6 20. Bh4 Qxd6 21. Rxd6 Bxf3 22. Nxf3 Ng8 23. c6 h6 24. Re1 g5 25. Bf2 Rfe8 26. Bd3 Re7 27. Bf5 Rae8 28. Bd7 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2003.08.05"]
[Round "2"]
[White "Weijermars, Boudewijn"]
[Black "Dufait, Yannick"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "107"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 Ne4 4. d4 Nxc3 5. bxc3 Bf5 6. Bd3 Bxd3 7. Qxd3 e6 8. Rb1 b6 9. Nf3 Be7 10. c4 c5 11. cxd5 Qxd5 12. c4 Qd8 13. d5 Na6 14. a3 f6 15. 0-0 fxe5 16. Nxe5 Bd6 17. f4 Nc7 18. dxe6 Bxe5 19. Qd7+ Qxd7 20. exd7+ Kxd7 21. fxe5 Ke6 22. Bf4 Rad8 23. Rbd1 h6 24. Rd6+ Ke7 25. Rfd1 Na6 26. e6 Rxd6 27. Rxd6 Rd8 28. Rxd8 Kxd8 29. Bd6 Kc8 30. Bf8 Nc7 31. Bxg7 h5 32. e7 Kd7 33. Bf8 Ne6 34. Kf2 Ke8 35. h3 Nxf8 36. exf8Q+ Kxf8 37. a4 Kf7 38. Kf3 Kg6 39. Kf4 Kf6 40. g4 hxg4 41. Kxg4 Ke5 42. h4 Kd4 43. h5 Kxc4 44. h6 Kb3 45. h7 c4 46. h8Q c3 47. Kf3 a6 48. Ke2 b5 49. axb5 axb5 50. Kd1 b4 51. Qd4 Ka3 52. Kc2 Ka4 53. Qc4 Ka5 54. Kb3 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2003.08.04"]
[Round "1"]
[White "Kratz, Eveline"]
[Black "Weijermars, Boudewijn"]
[Result "0-1"]
[ECO "B01"]
[PlyCount "84"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 d5 2. d3 dxe4 3. Nc3 exd3 4. Bxd3 Nf6 5. Bb5+ Bd7 6. Bxd7+ Qxd7 7. Qxd7+ Nbxd7 8. Nb5 Kd8 9. Bf4 e5 10. Bg3 c6 11. Nc3 Bb4 12. Nge2 Ne4 13. 0-0-0 Nxc3 14. Nxc3 Bxc3 15. bxc3 Ke7 16. Rhe1 f5 17. f4 e4 18. Bh4+ Nf6 19. Rd2 Rhd8 20. g4 Rxd2 21. Kxd2 Rd8+ 22. Kc1 g6 23. g5 Nd5 24. Bg3 Nxc3 25. Kb2 Nb5 26. h4 Nd4 27. h5 Nf3 28. Re2 Rd2 29. Rxd2 Nxd2 30. hxg6 hxg6 31. Kc1 Nf3 32. Kd1 Kd6 33. Ke2 Kd5 34. Bf2 b6 35. Ke3 Kc4 36. Ke2 Kc3 37. Kd1 Nh2 38. Be1+ Kd4 39. c3+ Kd3 40. Bg3 Nf3 41. c4 e3 42. a3 e2+ 0-1

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2002.08.10"]
[Round "9"]
[White "Weijermars, Boudewijn"]
[Black "Zomer, Bart"]
[Result "1-0"]
[ECO "A06"]
[PlyCount "54"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. b3 Nbd7 5. Bb2 e6 6. d4 Be7 7. Nbd2 0-0 8. Bd3 b6 9. Qc2 Bb7 10. g4 g6 11. h3 Ne8 12. 0-0-0 Rc8 13. h4 dxc4 14. bxc4 Nc7 15. h5 Kg7 16. d5+ Bf6 17. hxg6 hxg6 18. g5 Bxb2+ 19. Qxb2+ f6 20. Rh6 exd5 21. Rxg6+ Kf7 22. gxf6 Nxf6 23. Ng5+ Ke8 24. Rg7 Rg8 25. Bg6+ Kf8 26. Rf7+ Ke8 27. Rxc7+ Rxg6 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2002.08.09"]
[Round "8"]
[White "Kraetz, Jacques"]
[Black "Weijermars, Boudewijn"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "54"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Nxd5 4. Bc4 g6 5. 0-0 Bg7 6. Nc3 Nb6 7. Be2 0-0 8. d4 Nc6 9. Be3 Bf5 10. a3 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. Bd3 Bxd3 14. Qxd3 Qxd3 15. cxd3 Rfd8 16. Rfd1 Nd5 17. Nxd5 Rxd5 18. Rab1 Bd4 19. Re1 Rad8 20. g3 Bxe3 21. Rxe3 Rxd3 22. Re7 R3d7 23. Rbe1 Kf8 24. R7e2 Rd1 25. Kf1 Rxe1+ 26. Kxe1 Re8 27. Rxe8+ Kxe8 0-1

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2002.08.09"]
[Round "7"]
[White "Weijermars, Boudewijn"]
[Black "Snijdewint, Jeroen"]
[Result "0-1"]
[ECO "C87"]
[PlyCount "76"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Be7 5. Re1 d6 6. c3 0-0 7. d4 a6 8. Ba4 Bg4 9. d5 Na7 10. Bc2 c6 11. c4 cxd5 12. cxd5 Nb5 13. Be3 Rc8 14. Nbd2 h6 15. h3 Bh5 16. Rc1 Nh7 17. a4 Nd4 18. Bxd4 exd4 19. Nb3 Bg5 20. Rb1 Bf6 21. Nbxd4 Bxd4 22. g4 Bxg4 23. hxg4 Bf6 24. Qd3 g6 25. e5 Ng5 26. Nxg5 Bxg5 27. e6 Qf6 28. exf7+ Rxf7 29. Re6 Qxf2+ 30. Kh1 Qh4+ 31. Kg1 Qxg4+ 32. Kh1 Qh4+ 33. Kg1 Qf2+ 34. Kh1 Rxc2 35. Qxg6+ Kf8 36. Re8+ Kxe8 37. Qe6+ Re7 38. Qg8+ Kd7 0-1

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2002.08.08"]
[Round "6"]
[White "Weijermars, Boudewijn"]
[Black "Voortman, Jasper"]
[Result "1-0"]
[ECO "C66"]
[PlyCount "65"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. Re1 Nf6 6. c3 a6 7. Ba4 Qe7 8. Bc2 0-0-0 9. d4 Bg4 10. d5 Na7 11. Be3 Kb8 12. Nbd2 h6 13. a4 g5 14. b4 Bg7 15. Qe2 Nd7 16. b5 b6 17. bxa6 Rdf8 18. a5 f5 19. axb6 cxb6 20. Reb1 Nc8 21. Nc4 Ka7 22. Na5 Nb8 23. Qb5 Qc7 24. exf5 Bxf5 25. Bxf5 Rxf5 26. Nd2 Nd7 27. Nc6+ Ka8 28. Nc4 Nc5 29. Nxb6+ Nxb6 30. Qxb6 Qxb6 31. Rxb6 e4 32. a7 Rff8 33. Rb8+ 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2002.08.07"]
[Round "5"]
[White "Porte, Rinze"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "E90"]
[PlyCount "62"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. e4 d6 5. Nc3 0-0 6. Bg5 Nbd7 7. Bd3 c5 8. d5 Nb6 9. h3 e6 10. 0-0 a5 11. a3 h6 12. Bd2 Kh7 13. Rb1 Nfd7 14. Qe1 Ne5 15. Nxe5 Bxe5 16. Qe3 Bg7 17. Qe1 exd5 18. exd5 Qe8 19. Qxe8 Rxe8 20. Nb5 Rd8 21. Rfe1 Be5 22. Nc7 Ra7 23. Nb5 Ra8 24. b4 Bf6 25. Nc7 Ra7 26. Nb5 Ra8 27. Kh2 Bd7 28. Nxd6 Bc8 29. Nxf7 Rd7 30. Ne5 Rg7 31. Be3 Be7 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2002.08.07"]
[Round "4"]
[White "Weijermars, Boudewijn"]
[Black "Berendsen, David"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "9"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. f3 Nf6 2. c4 e6 3. d4 d5 4. e3 b6 5. b4 0-1

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2002.08.06"]
[Round "3"]
[White "Tan, Matthew"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "62"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. c3 Bg7 4. f4 Nd7 5. Nf3 Ngf6 6. Bd3 0-0 7. 0-0 c5 8. h3 Qb6 9. Kh2 cxd4 10. cxd4 d5 11. e5 Ne4 12. Nc3 Nxc3 13. bxc3 Qc7 14. Qb3 e6 15. Ba3 Re8 16. Rac1 Nb6 17. Ng5 Bd7 18. Bd6 Qd8 19. Nf3 Bf8 20. Bxf8 Rxf8 21. g4 f5 22. exf6 Rxf6 23. Ne5 Ba4 24. Qb2 Qf8 25. Qd2 Nd7 26. g5 Nxe5 27. gxf6 Nxd3 28. Qxd3 Qxf6 29. Qe3 Re8 30. Qe5 Qf5 31. Qxf5 exf5 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2002.08.06"]
[Round "2"]
[White "Weijermars, Boudewijn"]
[Black "Groen, Robbert"]
[Result "1/2-1/2"]
[ECO "D30"]
[PlyCount "61"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nf3 e6 2. c4 Nf6 3. d4 d5 4. Bf4 Be7 5. e3 0-0 6. Nbd2 b6 7. Qc2 Bb7 8. Bd3 h6 9. Rc1 c5 10. 0-0 Nbd7 11. e4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Bxe4 14. Qxe4 Nf6 15. Qe3 cxd4 16. Qxd4 Bc5 17. Qc3 g5 18. Rfd1 Qe7 19. Be3 Rfd8 20. Ne5 Rxd1+ 21. Rxd1 Rd8 22. Rxd8+ Qxd8 23. h3 Qd1+ 24. Kh2 Bxe3 25. Qxe3 Qd6 26. g3 Qb4 27. b3 Qd6 28. Nf3 Nd7 29. Qd4 Qc6 30. Ne5 Nxe5 31. Qxe5 1/2-1/2

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2002.08.05"]
[Round "1"]
[White "Vanderhallen, Nicolas"]
[Black "Weijermars, Boudewijn"]
[Result "1/2-1/2"]
[ECO "E91"]
[PlyCount "42"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Nf3 Nbd7 7. 0-0 b6 8. Qc2 Bb7 9. h3 c5 10. d5 e6 11. Bg5 exd5 12. cxd5 Re8 13. Nd2 h6 14. Be3 Nb8 15. Rae1 Ba6 16. f4 Bxe2 17. Rxe2 Na6 18. a3 Nc7 19. Qd3 Nh5 20. Ree1 Qd7 21. Kh2 b5 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.11"]
[Round "9"]
[White "De Veth, Bo"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "D30"]
[PlyCount "75"]
[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 e6 2. c4 Nf6 3. e3 d5 4. c5 Nc6 5. Nc3 e5 6. Be2 Be7 7. Nf3 exd4 8. exd4 0-0 9. 0-0 b6 10. cxb6 axb6 11. a3 Bf5 12. Be3 Bd6 13. Bg5 h6 14. Bxf6 gxf6 15. Bd3 Bg4 16. Bc2 Kh8 17. Qd3 f5 18. h3 Bh5 19. g4 Rg8 20. Kh1 Bg6 21. gxf5 Bh7 22. Rg1 Qf6 23. Nxd5 Qd8 24. Qc3 Na5 25. Ne3 Bf4 26. Ng4 h5 27. d5+ Rg7 28. Nf6 Bh6 29. Nxh5 Qf8 30. Nxg7 Bxg7 31. f6 Bh6 32. Bxh7 Kxh7 33. Qd3+ Kh8 34. Ng5 Bxg5 35. Rxg5 Qh6 36. Rag1 Re8 37. Qg3 Qh7 38. Rh5 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.10"]
[Round "7"]
[White "Weijermars, Boudewijn"]
[Black "Dekker, Dienke"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "61"]
[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 Qh4 5. Nc3 Bc5 6. Be3 Qf6 7. Ncb5 Bb6 8. Qd2 a6 9. Nxc6 Qxc6 10. Nc3 Nf6 11. Bd3 d6 12. 0-0-0 Ba5 13. Bd4 Be6 14. f3 Qd7 15. f4 Bg4 16. Be2 Bxe2 17. Qxe2 Rg8 18. e5 dxe5 19. Rhe1 0-0-0 20. Bb6 Bxc3 21. Rxd7 Rxd7 22. bxc3 cxb6 23. fxe5 Re8 24. Rd1 Rde7 25. Qf3 Rxe5 26. Qh3+ Kc7 27. Qg3 Ng4 28. Qxg4 Rd8 29. Rxd8 Kxd8 30. Qd4+ Ke7 31. Qxe5+ 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.10"]
[Round "8"]
[White "Weijermars, Boudewijn"]
[Black "Stoffers, Jeffrey"]
[Result "1/2-1/2"]
[ECO "B35"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Bc4 Nc6 8. Qd2 Bd7 9. 0-0-0 0-0 10. Bh6 Nxd4 11. Bxg7 Kxg7 12. Qxd4 Rc8 13. Bb3 a5 14. a3 b5 15. Nd5 e5 16. Qd3 Nxd5 17. Qxd5 Qg5+ 18. Kb1 a4 19. Ba2 Qxg2 20. Qxd6 Bg4 21. Qxe5+ Kg8 22. Rhg1 Rcd8 23. Rc1 Qf3 24. Qg3 Rfe8 25. Qxg4 Qxf2 26. Bxf7+ Qxf7 27. Rcf1 Qc4 28. Rf4 Rd2 29. Rc1 Rd4 30. Re1 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.09"]
[Round "6"]
[White "Cornelies, William"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B54"]
[PlyCount "100"]
[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 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Be3 g6 6. Bc4 Bg7 7. c3 Qc7 8. Qb3 Na5 9. Bb5+ Bd7 10. Bxd7+ Qxd7 11. Qb5 Nc6 12. Nd2 Nf6 13. 0-0 0-0 14. Rac1 Nxd4 15. Qxd7 Ne2+ 16. Kh1 Nxd7 17. Rce1 Nxc3 18. bxc3 Bxc3 19. Rc1 Rfc8 20. Nb3 Rc6 21. g3 Nb6 22. Nd4 Rc4 23. Nb5 Bf6 24. Bxb6 Rxc1 25. Rxc1 axb6 26. a3 Ra5 27. Rb1 Ra4 28. f3 Rc4 29. Kg2 Rc2+ 30. Kh3 Rb2 31. Rxb2 Bxb2 32. Kg2 Kf8 33. Kf2 Ke8 34. Ke3 Kd7 35. Kd3 Kc6 36. Kc4 e6 37. Na7+ Kd7 38. Nb5 f5 39. a4 e5 40. Kd5 f4 41. g4 h5 42. h3 h4 43. Nxd6 Ba3 44. Nc4 Be7 45. Nxe5+ Kc7 46. Nxg6 Bg5 47. e5 Kd7 48. Nf8+ Ke8 49. Ne6 Bh6 50. g5 Bf8 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.08"]
[Round "4"]
[White "Van Duijvenbode, Coen"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "E21"]
[PlyCount "85"]
[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 e6 2. c4 Nf6 3. Nc3 Bb4 4. Bd2 Bxc3 5. Bxc3 b6 6. e3 Bb7 7. Nf3 0-0 8. Be2 d5 9. 0-0 Nbd7 10. b4 Ne4 11. Qb3 Rc8 12. c5 Rb8 13. Qc2 a5 14. a3 c6 15. cxb6 Nxc3 16. Qxc3 axb4 17. Qxb4 Qxb6 18. Rfb1 Qxb4 19. Rxb4 Ba8 20. Rab1 f6 21. g3 Kf7 22. h4 Rxb4 23. Rxb4 Rb8 24. Kf1 Ke7 25. g4 Kd6 26. Rxb8 Nxb8 27. Ke1 e5 28. Kd2 c5 29. dxc5+ Kxc5 30. Kc3 Nc6 31. Nd2 d4+ 32. Kd3 Bb7 33. Nb3+ Kd5 34. Bf3+ Kd6 35. Bxc6 Bxc6 36. exd4 exd4 37. Nxd4 Bd7 38. Nf5+ Kc5 39. Nxg7 Bxg4 40. Ne8 f5 41. Nf6 h5 42. Nxg4 fxg4 43. Ke4 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.08"]
[Round "5"]
[White "Weijermars, Boudewijn"]
[Black "Goedbloed, Joost"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "61"]
[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 0-0 8. Bd3 c6 9. 0-0-0 c5 10. Qe3 Ng4 11. Qg3 Bxg5+ 12. f4 Bxf4+ 13. Qxf4 d6 14. Qg3 Qb6 15. h3 Ne5 16. Nd5 Qd8 17. h4 Ng4 18. h5 h6 19. Be2 Ne5 20. Rhf1 Nd7 21. Qxd6 Qg5+ 22. Kb1 a6 23. g4 a5 24. Rf5 Qd8 25. Rdf1 Ra6 26. Bxa6 bxa6 27. Ne7+ Kh7 28. Rxf7 Rxf7 29. Qg6+ Kh8 30. Rxf7 Ne5 31. Qxg7# 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.07"]
[Round "2"]
[White "Breukelman, Jan"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B72"]
[PlyCount "83"]
[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 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nc3 d6 7. Be2 Nf6 8. h4 h5 9. Nxc6 bxc6 10. e5 Ng4 11. Bxg4 Bxg4 12. f3 Be6 13. exd6 Qxd6 14. Qxd6 exd6 15. Rd1 d5 16. Na4 0-0 17. 0-0 Rfe8 18. Bd4 Bh6 19. c3 Bf5 20. Nc5 Re2 21. Rf2 Rae8 22. Kf1 R2e7 23. b4 Be3 24. Re2 Kf8 25. Rde1 Bxd4 26. Rxe7 Rxe7 27. cxd4 Rxe1+ 28. Kxe1 Ke7 29. Kd2 Kf6 30. Ke3 Bb1 31. a4 g5 32. g3 Bf5 33. Na6 Bc8 34. Nb8 Bb7 35. Nd7+ Kg6 36. Ne5+ Kf6 37. hxg5+ Kxg5 38. Nxf7+ Kf6 39. Nd6 Ba6 40. Kf4 Ke6 41. Nf5 Be2 42. Ng7+ 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.07"]
[Round "3"]
[White "Weijermars, Boudewijn"]
[Black "Wigboldus, Dionne"]
[Result "1-0"]
[ECO "C46"]
[PlyCount "153"]
[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 Bb4+ 4. Nc3 d6 5. dxe5 dxe5 6. Qxd8+ Nxd8 7. Nxe5 Nf6 8. Bd2 Bd6 9. Nf3 0-0 10. e5 Bxe5 11. Nxe5 Re8 12. f4 b6 13. 0-0-0 Ne6 14. Bc4 Bb7 15. Nf3 Nc5 16. Nb5 Ba6 17. Bxf7+ Kxf7 18. Nxc7 Rad8 19. Nxe8 Rxe8 20. Bc3 Nfe4 21. Rhe1 Bc8 22. Nd2 Bb7 23. Nxe4 Bxe4 24. g3 Kg6 25. Rd4 Kf5 26. Bb4 Na6 27. Bd6 Re6 28. Be5 Nc5 29. Rg1 Bf3 30. h3 Kg6 31. g4 Kf7 32. Bd6 Nb7 33. Be5 Nc5 34. Bd6 Ne4 35. Ba3 Nf6 36. Rg3 Be2 37. Rc3 Bb5 38. Rc7+ Kg6 39. f5+ Kg5 40. fxe6 Ne8 41. Rc8 Nf6 42. Rdd8 Kh4 43. e7 Kxh3 44. e8Q Bxe8 45. Rxe8 Nxe8 46. Rxe8 Kxg4 47. Kd2 h5 48. Bd6 h4 49. Ke2 g5 50. Rg8 a5 51. Be7 h3 52. Rxg5+ Kf4 53. Rh5 Kg4 54. Rh6 b5 55. Kd3 Kg3 56. Kd4 Kg2 57. Kc5 h2 58. Kxb5 h1Q 59. Rxh1 Kxh1 60. c4 Kg2 61. c5 a4 62. c6 Kf3 63. c7 a3 64. Bxa3 Ke4 65. c8Q Ke5 66. Bd6+ Ke4 67. Ba3 Ke3 68. Qc4 Kd2 69. Qc3+ Ke2 70. Kc4 Kf2 71. Qd3 Kg2 72. Qe3 Kf1 73. Qd2 Kg1 74. Kd3 Kh1 75. Ke3 Kg1 76. Kf3 Kh1 77. Qg2# 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2001.08.06"]
[Round "1"]
[White "Weijermars, Boudewijn"]
[Black "Van Zijl, Niek"]
[Result "1-0"]
[ECO "C47"]
[PlyCount "63"]
[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 Nf6 3. Nc3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Bg5 h6 7. Bxf6 Qxf6 8. Ndb5 Qe5 9. Qd3 a6 10. Na3 0-0 11. Nc4 Qe6 12. a3 Bxc3+ 13. bxc3 Re8 14. f3 d5 15. Nd2 f5 16. Qe3 fxe4 17. fxe4 dxe4 18. Bc4 Qxc4 19. Nxc4 Be6 20. Nd2 b5 21. 0-0 Rad8 22. Rad1 Bg4 23. Rde1 Rxd2 24. Qxd2 Be2 25. Rxe2 Nd4 26. cxd4 Rd8 27. Rxe4 c5 28. Rfe1 Rxd4 29. Rxd4 cxd4 30. Qxd4 h5 31. Re7 Kf8 32. Qxg7# 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.12"]
[Round "9"]
[White "Van Nies, Jessica"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "101"]
[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 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nxd5 Qxd5 5. d3 Nc6 6. Nf3 Bg4 7. Be2 Ne5 8. Be3 Nxf3+ 9. Bxf3 Bxf3 10. gxf3 g6 11. Qd2 Qxf3 12. Rg1 Bg7 13. c3 b6 14. Qe2 Qxe2+ 15. Kxe2 0-0-0 16. Rad1 Rd6 17. Kd2 Rhd8 18. Kc2 e5 19. Rgf1 f5 20. f4 exf4 21. Bxf4 Re6 22. Kb1 Rde8 23. Rd2 Re2 24. Rxe2 Rxe2 25. h4 Be5 26. Bxe5 Rxe5 27. Rf4 Re3 28. Kc2 Rg3 29. c4 Rg4 30. Rxg4 fxg4 31. Kd2 h5 32. Ke2 Kd7 33. Kf2 Ke6 34. d4 Kf5 35. Kg3 Ke4 36. d5 Kd4 37. b3 Kc3 38. Kf4 Kb2 39. b4 Kxa2 40. c5 bxc5 41. bxc5 a5 42. d6 cxd6 43. cxd6 a4 44. d7 Kb2 45. d8Q a3 46. Qd2+ Kb1 47. Qb4+ Ka2 48. Kg3 Ka1 49. Qxa3+ Kb1 50. Qe3 Kc2 51. Qg5 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.11"]
[Round "8"]
[White "Weijermars, Boudewijn"]
[Black "Luth, Jan Wilbert"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "80"]
[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 e6 2. d4 d5 3. e5 c5 4. Nf3 Qb6 5. c3 Nc6 6. Na3 cxd4 7. cxd4 Bb4+ 8. Bd2 Nxd4 9. Bxb4 Nxf3+ 10. Qxf3 Qxb4+ 11. Qc3 Qxc3+ 12. bxc3 Bd7 13. Bd3 f6 14. f4 fxe5 15. fxe5 Ne7 16. 0-0 0-0-0 17. Rf7 Nc6 18. Rxg7 Nxe5 19. Bxh7 Bc6 20. Bc2 Rdf8 21. Rf1 Rfg8 22. Rxg8+ Rxg8 23. g3 Rh8 24. Bb3 Kd7 25. Rd1 Nf3+ 26. Kf1 Nxh2+ 27. Kf2 Ng4+ 28. Kf3 Ne5+ 29. Kf4 Kd6 30. c4 Rf8+ 31. Kg5 Rg8+ 32. Kf4 Rg4+ 33. Ke3 Rxg3+ 34. Kf2 Rf3+ 35. Kg2 Rd3 36. cxd5 Bxd5+ 37. Bxd5 Rxd1 38. Bxb7 Rd2+ 39. Kg3 Rd3+ 40. Kf4 Rxa3 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.11"]
[Round "7"]
[White "Weijermars, Boudewijn"]
[Black "Visscher, Anne"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "91"]
[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. 0-0 h6 5. Nc3 Nf6 6. d3 d6 7. h3 0-0 8. Be3 Bxe3 9. fxe3 a6 10. d4 Qe7 11. Rb1 b5 12. Nd5 Nxd5 13. Bxd5 Bb7 14. Qd2 Nd8 15. Qb4 Bxd5 16. exd5 Re8 17. dxe5 dxe5 18. Qe4 Ra7 19. Rbc1 Nb7 20. c4 Nc5 21. Qc2 Nd7 22. c5 Nf6 23. e4 Raa8 24. Nh4 g6 25. Nf3 Rac8 26. Nd2 Red8 27. Nb3 Kg7 28. Na5 Qf8 29. Nc6 Re8 30. Rf2 Nd7 31. Qc3 Ra8 32. Rcf1 f6 33. Rc1 Qf7 34. Qa5 Rec8 35. Nb4 Nb8 36. Nd3 Qe7 37. c6 Qd6 38. Nc5 g5 39. Ne6+ Kg6 40. Rcf1 Qe7 41. Qa3 Nxc6 42. Qxe7 Nxe7 43. Rxf6+ Kh5 44. Ng7+ Kh4 45. Rxh6+ Kg3 46. Rf3# 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.10"]
[Round "6"]
[White "Euser, Kasper"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "A46"]
[PlyCount "107"]
[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 Nf6 3. Bf4 Nc6 4. a3 b6 5. e3 Bb7 6. c4 Ne7 7. Be2 d5 8. Nc3 Rc8 9. Qa4+ Nc6 10. 0-0 Be7 11. cxd5 Nxd5 12. Nxd5 Qxd5 13. Bc4 Qd7 14. Bb5 0-0 15. Rac1 Bd6 16. Bxc6 Bxc6 17. Qxc6 Qd8 18. Bxd6 cxd6 19. Qxc8 Qxc8 20. Rxc8 Rxc8 21. Rd1 Rc2 22. Rb1 g6 23. Kf1 Kg7 24. Ke1 Kf6 25. Nd2 e5 26. Kd1 Rc6 27. Rc1 Rxc1+ 28. Kxc1 h5 29. Nc4 exd4 30. exd4 d5 31. Ne3 Kg5 32. Kd2 Kf4 33. Kd3 h4 34. Nxd5+ Kg4 35. Ne3+ Kf4 36. h3 f5 37. Nd5+ Kg5 38. Ke3 Kh5 39. Ne7 Kg5 40. d5 Kf6 41. d6 Kf7 42. Kf4 Ke6 43. Nxg6 Kxd6 44. Nxh4 Kc5 45. Nxf5 Kc4 46. g4 Kb3 47. g5 Kxb2 48. g6 Kxa3 49. g7 b5 50. g8Q b4 51. Qg3+ Ka2 52. Nd4 a5 53. Qb3+ Ka1 54. Nc2# 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.09"]
[Round "4"]
[White "Broekhuizen, Maarten"]
[Black "Weijermars, Boudewijn"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "104"]
[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 c5 2. Nc3 Nc6 3. Bc4 d6 4. d3 g6 5. Be3 Bg7 6. Qd2 Bd7 7. 0-0-0 Nf6 8. Nge2 0-0 9. g3 Ne5 10. d4 Nxc4 11. Qd3 Nxe3 12. fxe3 cxd4 13. exd4 Ng4 14. Qf3 f5 15. exf5 Bxf5 16. h3 Bh6+ 17. Nf4 Bxf4+ 18. Qxf4 Nf6 19. Qe3 Qb6 20. g4 Bc8 21. Rhf1 e5 22. g5 exd4 23. Rxd4 Bxh3 24. Rxf6 Rxf6 25. Nd5 Rf1+ 26. Kd2 Qa5+ 27. c3 Qd8 28. Nf6+ Kg7 29. Qxh3 Rxf6 30. gxf6+ Qxf6 31. Qd7+ Qf7 32. Qxd6 Qf2+ 33. Kc1 Qe3+ 34. Kc2 Qf2+ 35. Kc1 Qe3+ 36. Kc2 Rf8 37. Qd7+ Rf7 38. Rd3 Qe2+ 39. Rd2 Rxd7 40. Rxe2 h5 41. a4 h4 42. b4 g5 43. c4 h3 44. Rh2 g4 45. Kc3 Rf7 46. c5 Rf3+ 47. Kc4 Rg3 48. a5 Rg2 49. b5 Rxh2 50. b6 a6 51. c6 Rc2+ 52. Kd5 Rxc6 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.09"]
[Round "5"]
[White "Weijermars, Boudewijn"]
[Black "Van Splunter, Niels"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "50"]
[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 Nge7 5. 0-0 0-0 6. d3 d6 7. Be3 Bg4 8. Bxc5 dxc5 9. h3 Bh5 10. Rb1 Nd4 11. Nd5 Nxd5 12. Bxd5 Nxf3+ 13. gxf3 c6 14. Bb3 Kh8 15. Kh2 f5 16. Rg1 fxe4 17. dxe4 Rxf3 18. Qxd8+ Rxd8 19. Rg2 Rd4 20. Rbg1 c4 21. Rxg7 Rxf2+ 22. R7g2 Rxg2+ 23. Rxg2 cxb3 24. axb3 Bf3 25. Rf2 Bxe4 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.08"]
[Round "2"]
[White "De Regt, Michel"]
[Black "Weijermars, Boudewijn"]
[Result "1-0"]
[ECO "B56"]
[PlyCount "45"]
[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 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 g6 6. Bb5 Bd7 7. Be3 Bg7 8. 0-0 Nf6 9. f3 Qb6 10. Nf5 Qc7 11. Nxg7+ Kf8 12. Nd5 Nxd5 13. exd5 Nb4 14. Bxd7 Qxd7 15. c3 Na6 16. Bd4 Rg8 17. Re1 Nc7 18. Qb3 Nb5 19. Qa4 Rd8 20. Ne6+ fxe6 21. dxe6 Qc6 22. Be3 Nc7 23. Qf4+ 1-0

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.08"]
[Round "3"]
[White "Weijermars, Boudewijn"]
[Black "Van Diepen, Sanne"]
[Result "0-1"]
[ECO "C59"]
[PlyCount "66"]
[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. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 Bc5 9. Nc3 Bf5 10. d3 0-0 11. 0-0 Rb8 12. Be3 Bb6 13. Na4 Nd5 14. Nxb6 Nxe3 15. fxe3 Qxg5 16. Nc4 Nxc4 17. dxc4 Rxb2 18. Bd3 Qxe3+ 19. Kh1 Be6 20. Rf3 Qc5 21. Qe2 f5 22. Qe3 Qxe3 23. Rxe3 e4 24. Bf1 Rxc2 25. Rb1 Bxc4 26. Bxc4+ Rxc4 27. h3 f4 28. Ra3 e3 29. Kg1 Rc2 30. Kf1 Rf2+ 31. Ke1 Rxg2 32. Rxa7 f3 33. Kf1 e2+ 0-1

[Event "NED-ch U14 op"]
[Site "Hengelo"]
[Date "2000.08.07"]
[Round "1"]
[White "Weijermars, Boudewijn"]
[Black "Boersma, Rob"]
[Result "1-0"]
[ECO "C66"]
[PlyCount "80"]
[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. Bb5 d6 4. Nc3 Be7 5. d3 Nf6 6. 0-0 Bg4 7. h3 Bh5 8. Be3 0-0 9. Qe2 a6 10. Ba4 b5 11. Bb3 Na7 12. Nd5 Nxd5 13. Bxd5 c6 14. Bb3 a5 15. a3 Kh8 16. d4 f6 17. d5 c5 18. c4 b4 19. a4 f5 20. Bc2 fxe4 21. Bxe4 Nc8 22. b3 Bf6 23. Qd3 Bxf3 24. Bxf3 e4 25. Bxe4 Bxa1 26. Rxa1 Qf6 27. Re1 g6 28. Qc2 Ne7 29. Bc1 Kg8 30. Bb2 Qf7 31. Bf3 Rfe8 32. Bg4 Kf8 33. Be6 Qf4 34. Re3 Nf5 35. Rf3 Qh6 36. Bxf5 Re1+ 37. Kh2 gxf5 38. Qxf5+ Ke8 39. Qf7+ Kd8 40. Qb7 Rc8 1-0

