[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2005.08.13"]
[Round "9"]
[White "Elgersma, Siebren"]
[Black "Dekker, Tobias"]
[Result "1/2-1/2"]
[ECO "E79"]
[WhiteElo "1598"]
[BlackElo "1630"]
[PlyCount "85"]
[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 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. 0-0 Bd7 10. f4 Qb6 11. Na4 Qd8 12. Nc3 a6 13. Qd2 Ng4 14. Bxg4 Bxg4 15. f5 Nxd4 16. Bxd4 Bxd4+ 17. Qxd4 gxf5 18. exf5 Bh5 19. Qh4 Qb6+ 20. Rf2 Be2 21. Nxe2 Qxb2 22. Qd4 Qxd4 23. Nxd4 Rac8 24. Rc2 Rc5 25. Rb1 Rc7 26. Nb3 Rfc8 27. Nd2 b5 28. Rbc1 Rc5 29. g4 d5 30. Re1 R8c7 31. Kf2 bxc4 32. Ke3 e6 33. fxe6 fxe6 34. Kd4 c3 35. Nb1 Rc4+ 36. Kd3 Rxg4 37. Rxe6 a5 38. Nxc3 Rh4 39. Ree2 Rcc4 40. Rg2+ Kf7 41. Rgf2+ Ke6 42. Ne2 Ra4 43. Rg2 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2005.08.12"]
[Round "7"]
[White "Elgersma, Siebren"]
[Black "Ferrier, Yvonne"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1598"]
[BlackElo "1536"]
[PlyCount "44"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. f4 Nd5 8. Bc4 Qb4+ 9. Nd2 Ne3 10. c3 Qb6 11. Qh5 g6 12. Qf3 Nc2+ 13. Kd1 Nxa1 14. f5 Ba6 15. fxg6 0-0-0 16. Qxf7 hxg6 17. Qxg6 Bxc4 18. Nxc4 Qf2 19. Be3 Qh4 20. Na3 Bxa3 21. bxa3 Qa4+ 22. Kd2 Rhg8 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2005.08.12"]
[Round "8"]
[White "Emonts, Aljoscha"]
[Black "Elgersma, Siebren"]
[Result "1-0"]
[ECO "B78"]
[WhiteElo "893"]
[BlackElo "1598"]
[PlyCount "37"]
[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 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. Kb1 a6 13. g4 b5 14. h4 h5 15. Bh6 hxg4 16. fxg4 Bxg4 17. Bxg7 Kxg7 18. Rdg1 Bh5 19. Nf5+ 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2005.08.11"]
[Round "6"]
[White "Kiers, Ward"]
[Black "Elgersma, Siebren"]
[Result "1-0"]
[ECO "B72"]
[WhiteElo "1625"]
[BlackElo "1598"]
[PlyCount "55"]
[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 g6 6. Be3 Bg7 7. Bc4 0-0 8. Qd2 Nc6 9. f4 Bd7 10. h3 Rc8 11. Bb3 Nxd4 12. Bxd4 Bc6 13. Qe3 a6 14. g4 Re8 15. 0-0-0 b5 16. Rh2 a5 17. Bb6 Qd7 18. Bxa5 Ra8 19. Bb4 Qb7 20. Re1 d5 21. e5 Nd7 22. e6 Nf8 23. exf7+ Kxf7 24. f5 gxf5 25. gxf5 Qd7 26. Qg5 e6 27. Rg1 Kg8 28. f6 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2005.08.10"]
[Round "5"]
[White "Elgersma, Siebren"]
[Black "Mulders, Rinze"]
[Result "1/2-1/2"]
[ECO "B76"]
[WhiteElo "1598"]
[BlackElo "1688"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 Nxd4 10. Bxd4 Be6 11. g4 Qa5 12. a3 a6 13. h4 Rac8 14. h5 b5 15. hxg6 fxg6 16. Qh2 Rf7 17. g5 Nh5 18. Bxg7 Rxg7 19. Bh3 Bxh3 20. Qxh3 Rxc3 21. bxc3 Qxc3 22. Rd3 Qe5 23. Rd5 Qa1+ 24. Kd2 Qxa3 25. e5 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2005.08.10"]
[Round "4"]
[White "Kabos, Tobias"]
[Black "Elgersma, Siebren"]
[Result "0-1"]
[ECO "B71"]
[WhiteElo "1680"]
[BlackElo "1598"]
[PlyCount "150"]
[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 g6 6. f4 Bg7 7. Bc4 0-0 8. Qd3 Nc6 9. 0-0 Qb6 10. Be3 Ng4 11. Nf5 Nxe3 12. Nxe3 Qxb2 13. Ncd5 Qd4 14. Rab1 Qxd3 15. cxd3 Bd4 16. Kf2 Rb8 17. Bb5 Bxe3+ 18. Kxe3 Bd7 19. Bxc6 bxc6 20. Nc3 Rb6 21. Na4 Ra6 22. Nc3 Be6 23. Rf2 Rb6 24. Rfb2 Rfb8 25. Rxb6 axb6 26. Rb2 b5 27. d4 Bd7 28. g3 b4 29. Kd3 c5 30. Kc4 Be6+ 31. Nd5 Bxd5+ 32. exd5 Rc8 33. dxc5 dxc5 34. Re2 Kf8 35. Rc2 Ke8 36. Kb5 Rb8+ 37. Kc6 Rc8+ 38. Kb5 Ra8 39. Re2 Rc8 40. Rc2 Rb8+ 41. Kc6 Ra8 42. Rb2 Rc8+ 43. Kb7 Kd7 44. Re2 Rc7+ 45. Kb6 Kd6 46. Rc2 h6 47. Rc1 c4 48. Kb5 b3 49. axb3 cxb3 50. Rb1 b2 51. Kb4 Rc2 52. h3 Kxd5 53. Kb3 Rg2 54. Ka2 Ke4 55. Re1+ Kf5 56. Rxe7 f6 57. Re3 h5 58. Kb1 h4 59. gxh4 Kxf4 60. Rb3 Rf2 61. Rb4+ Kg3 62. Rg4+ Kxh3 63. Rxg6 Kxh4 64. Rg1 f5 65. Ka2 Kh3 66. Kb3 f4 67. Kc3 f3 68. Kd3 Rg2 69. Rf1 Kg3 70. Ke3 Re2+ 71. Kd3 Re8 72. Rg1+ Kf2 73. Rb1 Rb8 74. Kd2 Kg2 75. Ke3 f2 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2005.08.09"]
[Round "3"]
[White "Elgersma, Siebren"]
[Black "Dirksen, Marieke"]
[Result "1-0"]
[ECO "B75"]
[WhiteElo "1598"]
[BlackElo "1416"]
[PlyCount "61"]
[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. Qd2 Nf6 8. f3 d5 9. Bb5 dxe4 10. Nxc6 Qxd2+ 11. Bxd2 Bd7 12. Nd4 exf3 13. Bxd7+ Kxd7 14. Nxf3 e6 15. 0-0-0 Ke7 16. Bg5 h6 17. Bh4 g5 18. Bf2 b6 19. Nb5 Ne4 20. Be3 Rhb8 21. Nc7 f5 22. Nxa8 Rxa8 23. Nd2 Nd6 24. Nb3 Nc4 25. Bd4 e5 26. Rhe1 Kf6 27. Bc3 f4 28. Rd5 Kf5 29. Nd4+ Kf6 30. Nf3 Ke6 31. Rb5 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2005.08.09"]
[Round "2"]
[White "Van Rijn, Giel"]
[Black "Elgersma, Siebren"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1848"]
[BlackElo "1598"]
[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. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Bc4 Nb6 6. Bb3 dxc3 7. Nxc3 Nc6 8. Nf3 e6 9. 0-0 d6 10. Bg5 Be7 11. Bxe7 Kxe7 12. exd6+ Qxd6 13. Qe2 Nd4 14. Nxd4 Qxd4 15. Rfd1 Qc5 16. Rac1 Qa5 17. Qg4 g5 18. Ne4 h6 19. Rc5 Qb4 20. Rc7+ Nd7 21. Rdxd7+ Bxd7 22. Rxd7+ Kf8 23. Rxf7+ Kxf7 24. Qxe6+ 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2005.08.08"]
[Round "1"]
[White "Elgersma, Siebren"]
[Black "Van de Pieterman, Frank"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1598"]
[BlackElo "1109"]
[PlyCount "77"]
[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 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bc4 e6 6. Bd2 c6 7. Nd5 Qd8 8. Nxf6+ Qxf6 9. Nf3 c5 10. Be3 Nd7 11. Bb5 b6 12. Ne5 Qe7 13. Qf3 Rb8 14. Nc6 Qd6 15. Bf4 Qd5 16. Qxd5 exd5 17. Nxb8 Be7 18. Nxd7 Bxd7 19. Bxd7+ Kxd7 20. dxc5 Bxc5 21. 0-0-0 Bxf2 22. Rxd5+ Kc6 23. Rhd1 Rc8 24. Rd7 g6 25. Rxf7 h5 26. Rxa7 Re8 27. Rd6+ Kb5 28. Rxg6 Kc4 29. b3+ Kc3 30. Bd2+ Kd4 31. Ra4+ Kd5 32. Rg5+ Kc6 33. Rxh5 b5 34. Ra6+ Kb7 35. Rg6 Kc8 36. Rh7 Bd4 37. Bf4 Bc3 38. Rc6+ Kd8 39. Bg5+ 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Borrink, Joern"]
[Black "Elgersma, Siebren"]
[Result "1/2-1/2"]
[ECO "B73"]
[PlyCount "92"]
[EventDate "2004.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Qd2 Nc6 8. Be2 Bd7 9. 0-0 0-0 10. Rad1 Qc7 11. f4 a6 12. f5 Ne5 13. Bg5 Nc6 14. Bxf6 Bxf6 15. Nb3 Kg7 16. Nd5 Qb8 17. Nxf6 exf6 18. Qxd6 Qa7+ 19. Qc5 b6 20. Qc3 Rac8 21. fxg6 fxg6 22. Bxa6 Rc7 23. Bd3 Bg4 24. Rd2 Be6 25. Nd4 Nxd4 26. Qxd4 Rd7 27. Qe3 Rb8 28. Bb5 Rxd2 29. Qxd2 Qxa2 30. Qd6 Rb7 31. Bc6 Rf7 32. b3 Bg4 33. Bd5 Be2 34. Qe6 Ra7 35. Qxf6+ Kh6 36. Re1 Qxc2 37. Qxb6 Qd2 38. Qf2 Ra2 39. h3 Rc2 40. Kh2 Bf3 41. Qh4+ Bh5 42. Qg3 Rc3 43. Qe5 Qxe1 44. Qf4+ Kg7 45. Qf7+ Kh6 46. Qf4+ Kg7 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Elgersma, Siebren"]
[Black "Lim, Dustin"]
[Result "1-0"]
[ECO "C47"]
[PlyCount "57"]
[EventDate "2004.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 d6 5. Nc3 Nf6 6. Be3 Bd7 7. Bc4 Ne5 8. Bb3 c5 9. Ndb5 Bxb5 10. Nxb5 Nxe4 11. Qd5 Qa5+ 12. c3 Qxb5 13. Qxe4 Be7 14. Ba4 Qxa4 15. Qxa4+ Kd8 16. Rd1 c4 17. Qa5+ Kc8 18. b3 Nd3+ 19. Ke2 Re8 20. bxc4 Nf4+ 21. Kf1 Ng6 22. Qf5+ Kc7 23. Qxf7 Rac8 24. c5 Kb8 25. cxd6 Ne5 26. Qxg7 Bxd6 27. Rxd6 Rcd8 28. Rxd8+ Rxd8 29. Qxe5+ 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Elgersma, Siebren"]
[Black "Perizonius, Oscar"]
[Result "1/2-1/2"]
[ECO "B75"]
[PlyCount "30"]
[EventDate "2004.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 Bd7 9. Bc4 a6 10. g4 Bxg4 11. fxg4 Nxg4 12. Nxc6 bxc6 13. Rf1 Rf8 14. h3 Nxe3 15. Qxe3 e6 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Elgersma, Siebren"]
[Black "Van Lanen, Luuk"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "53"]
[EventDate "2004.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Bxf6 gxf6 9. Na3 b5 10. Nd5 f5 11. exf5 Bxf5 12. Qf3 Nd4 13. Nc7+ Qxc7 14. Qxa8+ Ke7 15. c3 Qc5 16. Qb7+ Ke6 17. cxd4 Qb4+ 18. Kd1 Qxd4+ 19. Ke1 Qb4+ 20. Kd1 Bh6 21. Bc4+ Kf6 22. Qxf7+ Kg5 23. h4+ Kg4 24. Be2+ Kf4 25. Nc2 Qxb2 26. g3+ Ke4 27. f3# 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Elgersma, Siebren"]
[Black "Van Splunter, Jacco"]
[Result "1-0"]
[ECO "B01"]
[PlyCount "49"]
[EventDate "2004.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. Bg5 Bxf3 8. Bxf3 Qxg5 9. Bxb7 Bb4 10. Bxa8 c6 11. Qf3 Nd5 12. 0-0 Bxc3 13. bxc3 0-0 14. c4 Ne7 15. Rab1 Nf5 16. c3 Nh4 17. Qg3 Qe7 18. Rxb8 Nf5 19. Qe5 f6 20. Rxf8+ Kxf8 21. Qb8+ Kf7 22. Qb7 Qxb7 23. Bxb7 Nd6 24. Bxc6 Nxc4 25. Re1 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Haast, Mark"]
[Black "Elgersma, Siebren"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "65"]
[EventDate "2004.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 e6 6. Nc3 Bb4 7. Bd2 Nxc3 8. bxc3 Be7 9. Nf3 d5 10. exd6 Bxd6 11. Bd3 Nc6 12. 0-0 0-0 13. Ng5 g6 14. Qg4 h5 15. Qf3 Be7 16. Ne4 e5 17. Bh6 Bg4 18. Qe3 exd4 19. cxd4 Re8 20. Bb5 Qd5 21. Bxc6 bxc6 22. Rfe1 Rad8 23. Rac1 Bf5 24. Ng3 Bg4 25. h3 Be6 26. Red1 Qxa2 27. Nxh5 Qb3 28. Qe5 Bf8 29. Nf6+ Kh8 30. Nxe8+ Kg8 31. Nf6+ Kh8 32. Nd7+ Kg8 33. Nxf8 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Ten Hagen, Yorick"]
[Black "Elgersma, Siebren"]
[Result "1-0"]
[ECO "B76"]
[PlyCount "71"]
[EventDate "2004.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 Bd7 10. g4 a5 11. h4 Rb8 12. Bb5 Nxd4 13. Bxd4 Qe8 14. a4 Rc8 15. h5 Bxb5 16. axb5 Rc4 17. hxg6 fxg6 18. Qh2 e5 19. Be3 a4 20. Rxd6 Qe7 21. Rd3 Rfc8 22. g5 Nh5 23. Nd5 Rxc2+ 24. Qxc2 Rxc2+ 25. Kxc2 Qf7 26. Rhd1 Bf8 27. Bf2 Qe6 28. Kb1 Qf7 29. Rc3 Kh8 30. Rc8 Qxf3 31. Rd2 Qxe4+ 32. Kc1 Qf5 33. Nb6 e4 34. Bd4+ Ng7 35. Rf2 Qxg5+ 36. Kc2 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.09"]
[Round "12"]
[White "Elgersma, Siebren"]
[Black "Tillema, Mendelt"]
[Result "0-1"]
[ECO "B34"]
[PlyCount "56"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nc3 Nf6 7. Bb5 0-0 8. 0-0 a6 9. Ba4 b5 10. Nxc6 dxc6 11. Qxd8 Rxd8 12. Bb3 a5 13. Bg5 a4 14. e5 Ng4 15. Bxe7 Rd7 16. Nd5 axb3 17. Nb6 Rxe7 18. Nxa8 Rb7 19. axb3 Be6 20. Ra6 c5 21. Rc6 Bxe5 22. Rxc5 Bxh2+ 23. Kh1 Be5 24. f3 Nf2+ 25. Kg1 Bd4 26. Rc7 Rb8 27. c3 Nh3+ 28. Kh2 Be5+ 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.08"]
[Round "10"]
[White "Elgersma, Siebren"]
[Black "Ijsselhof, Rinske"]
[Result "0-1"]
[ECO "B56"]
[PlyCount "110"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Be3 Nf6 6. Nc3 g6 7. Bb5 Bd7 8. 0-0 Bg7 9. Nxc6 Bxc6 10. Qd3 0-0 11. Qc4 Qc7 12. Nd5 Qd7 13. Bxc6 bxc6 14. Qxc6 Rfd8 15. Nxf6+ Bxf6 16. Qxd7 Rxd7 17. c3 Rb7 18. Bd4 Bxd4 19. cxd4 Rxb2 20. Rfb1 Rab8 21. Rxb2 Rxb2 22. f3 e6 23. h4 Rd2 24. Kh2 Rxd4 25. Kh3 Kg7 26. g4 Kf6 27. g5+ Ke5 28. Kg3 d5 29. exd5 Rxd5 30. Rb1 Rd7 31. Rb8 f5 32. gxf6 Kxf6 33. Rf8+ Rf7 34. Rxf7+ Kxf7 35. Kg4 Kf6 36. f4 h6 37. Kf3 Kf5 38. Kg3 g5 39. fxg5 hxg5 40. h5 g4 41. h6 Kg6 42. h7 Kxh7 43. Kxg4 Kg7 44. Kg3 Kf6 45. Kf4 e5+ 46. Ke4 Ke6 47. Ke3 Kd5 48. Kd3 e4+ 49. Ke3 Ke5 50. Ke2 Kd4 51. Kd2 a5 52. a4 Kc4 53. Ke3 Kb4 54. Kxe4 Kxa4 55. Kd3 Kb3 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.08"]
[Round "9"]
[White "Offringa, Joost"]
[Black "Elgersma, Siebren"]
[Result "1/2-1/2"]
[ECO "C45"]
[PlyCount "92"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[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. d4 exd4 4. Nxd4 Bc5 5. Be3 Bxd4 6. Bxd4 Nxd4 7. Qxd4 Qg5 8. Nc3 Ne7 9. Nd5 Nxd5 10. Qxd5 Qxd5 11. exd5 0-0 12. 0-0-0 d6 13. Bd3 Bd7 14. Rhe1 Rfe8 15. Kd2 g6 16. Rxe8+ Rxe8 17. Re1 Kg7 18. Rxe8 Bxe8 19. Ke3 Kf6 20. f4 Bd7 21. h3 h5 22. c4 Bf5 23. Bxf5 Kxf5 24. g3 f6 25. Kf3 g5 26. g4+ hxg4+ 27. hxg4+ Kg6 28. f5+ Kf7 29. Ke4 Ke7 30. Kd3 Kd7 31. Kc3 a5 32. a3 c5 33. dxc6+ Kxc6 34. b4 axb4+ 35. axb4 b6 36. Kd4 Kc7 37. c5 dxc5+ 38. bxc5 b5 39. Kd5 Kd7 40. c6+ Kc7 41. Kc5 b4 42. Kxb4 Kxc6 43. Kc4 Kd6 44. Kd4 Ke7 45. Kd5 Kd7 46. Kd4 Ke7 1/2-1/2

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.08"]
[Round "7"]
[White "Van Cappellen, Jonas"]
[Black "Elgersma, Siebren"]
[Result "1/2-1/2"]
[ECO "C45"]
[PlyCount "83"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[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. d4 exd4 4. Nxd4 Bc5 5. Be3 Bxd4 6. Bxd4 Nxd4 7. Qxd4 Qg5 8. Nd2 Ne7 9. Nf3 Qh6 10. Bc4 Nc6 11. Qd3 0-0 12. 0-0 d6 13. a3 Qg6 14. Rfe1 Bg4 15. Bd5 Bxf3 16. Qxf3 Ne5 17. Qc3 c6 18. Ba2 a5 19. Rad1 b5 20. Kh1 Rfd8 21. f4 Ng4 22. Qf3 Qh5 23. h3 Nf6 24. Qxh5 Nxh5 25. f5 b4 26. a4 Kf8 27. Rd3 f6 28. g4 Nf4 29. Rf3 g5 30. h4 h6 31. h5 Re8 32. Rfe3 Re5 33. Kh2 Rae8 34. Kg3 d5 35. Kf3 d4 36. Rd3 Nxd3 37. cxd3 c5 38. Bc4 Ke7 39. b3 Kd6 40. Re2 R5e7 41. Re1 Ke5 42. Re2 1/2-1/2

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.08"]
[Round "11"]
[White "Verstraten, Simon"]
[Black "Elgersma, Siebren"]
[Result "1/2-1/2"]
[ECO "C44"]
[PlyCount "21"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[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. d4 exd4 4. Bc4 Bc5 5. Ng5 Nh6 6. Nxf7 Nxf7 7. Bxf7+ Kxf7 8. Qh5+ g6 9. Qxc5 d6 10. Qc4+ Be6 11. Qd3 1/2-1/2

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.07"]
[Round "8"]
[White "Elgersma, Siebren"]
[Black "Tempelman, Kristianne"]
[Result "1/2-1/2"]
[ECO "B33"]
[PlyCount "40"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nxc6 bxc6 6. Nc3 Nf6 7. Bd2 d5 8. exd5 cxd5 9. Bg5 Bb4 10. Bb5+ Bd7 11. Bxd7+ Qxd7 12. Bxf6 Bxc3+ 13. bxc3 gxf6 14. 0-0 Rg8 15. Qf3 Qe6 16. c4 e4 17. Qh5 dxc4 18. Qxh7 Qg4 19. g3 Qg6 20. Qxg6 fxg6 1/2-1/2

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.06"]
[Round "6"]
[White "Elgersma, Siebren"]
[Black "Ter Schegget, Bram"]
[Result "0-1"]
[ECO "B72"]
[PlyCount "42"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 g6 6. Be3 Bg7 7. Bc4 Nf6 8. 0-0 0-0 9. Qd2 Ng4 10. Nxc6 bxc6 11. Bf4 Rb8 12. Bb3 Ba6 13. Rfe1 Qb6 14. Be3 Nxe3 15. Qxe3 Qxe3 16. Rxe3 Rb4 17. a3 Rb7 18. Rb1 Bd4 19. Rd3 Bxd3 20. cxd3 Bxc3 21. bxc3 Rfb8 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.06"]
[Round "4"]
[White "Hummel, Thomas"]
[Black "Elgersma, Siebren"]
[Result "0-1"]
[ECO "C47"]
[PlyCount "118"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[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. Nc3 Nf6 4. d3 d6 5. Bg5 Be7 6. Be2 Bg4 7. h3 Bh5 8. 0-0 0-0 9. Bxf6 Bxf6 10. Rc1 Qe7 11. Nd5 Qd8 12. c3 Ne7 13. Nxe7+ Qxe7 14. d4 exd4 15. Nxd4 Bxe2 16. Qxe2 Rfe8 17. Rfe1 Bxd4 18. cxd4 c6 19. Rcd1 d5 20. e5 Rad8 21. Rd3 Qe6 22. Rg3 Rd7 23. Re3 Rde7 24. b3 Qd7 25. Rg3 b6 26. Qe3 h6 27. Qxh6 g6 28. Rg4 f6 29. Rxg6+ Rg7 30. Rxf6 Rh7 31. Rd6 Rxh6 32. Rxd7 Rh7 33. Rd6 Rc7 34. Re3 Kf7 35. Rf3+ Ke7 36. Rff6 a6 37. Rde6+ Kd8 38. Rxe8+ Kxe8 39. h4 c5 40. dxc5 bxc5 41. Rd6 d4 42. Kf1 Rd7 43. Ke2 Rc7 44. Rxa6 c4 45. bxc4 Rxc4 46. Ra5 Rc2+ 47. Kd3 Rxf2 48. Kxd4 Rxg2 49. e6 Rg4+ 50. Kd5 Rxh4 51. Kd6 Rd4+ 52. Rd5 Ra4 53. Rh5 Ra6+ 54. Ke5 Ra5+ 55. Kf6 Rxh5 56. e7 Ra5 57. Ke6 Rxa2 58. Kd6 Re2 59. Kd5 Rxe7 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.05"]
[Round "2"]
[White "Elgersma, Siebren"]
[Black "Van Vliet, Harry"]
[Result "1/2-1/2"]
[ECO "C45"]
[PlyCount "32"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[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. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Nf5 Nxf5 8. Bxc5 d6 9. exf5 dxc5 10. g4 0-0 11. Be2 Re8 12. 0-0 b6 13. Bf3 Bb7 14. Re1 Rxe1+ 15. Qxe1 Rd8 16. Nd2 Qh4 1/2-1/2

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.05"]
[Round "3"]
[White "Van Rijn, Giel"]
[Black "Elgersma, Siebren"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "27"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[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. d4 exd4 4. Bc4 Be7 5. c3 dxc3 6. Qd5 Nh6 7. Bxh6 0-0 8. Nxc3 gxh6 9. Qh5 Bg5 10. h4 Bf6 11. Qxh6 Bg7 12. Qh5 d6 13. Ng5 h6 14. Nxf7 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2003.08.04"]
[Round "1"]
[White "Vlaming, Killian"]
[Black "Elgersma, Siebren"]
[Result "0-1"]
[ECO "C55"]
[PlyCount "44"]
[EventDate "2003.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[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. Bc4 Be7 4. 0-0 Nf6 5. Nc3 d6 6. d3 Bg4 7. Be3 0-0 8. h3 Bh5 9. a4 h6 10. a5 a6 11. Bd5 Rb8 12. Bxc6 bxc6 13. b3 c5 14. Nd5 Nxd5 15. exd5 f5 16. Bd2 e4 17. dxe4 fxe4 18. g4 Rxf3 19. gxh5 Bg5 20. Bc3 Bf4 21. Qxf3 exf3 22. Kh1 Qh4 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2002.08.06"]
[Round "3"]
[White "Elgersma, Siebren"]
[Black "Benninga, Lasse"]
[Result "0-1"]
[ECO "C42"]
[PlyCount "69"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Qe7 4. Nf3 Qxe4+ 5. Qe2 Qxe2+ 6. Bxe2 Nc6 7. Nc3 Bc5 8. 0-0 d5 9. a3 a5 10. Nb5 Bb6 11. d4 0-0 12. Bf4 Bf5 13. c3 Rac8 14. Be5 Nxe5 15. Nxe5 Rfd8 16. b4 c6 17. bxa5 Bxa5 18. Na7 Ra8 19. Naxc6 bxc6 20. Nxc6 Re8 21. Bb5 Bxc3 22. Rac1 Rxa3 23. Ne5 Rb8 24. Bd3 Bxd3 25. Nxd3 Bd2 26. Rb1 Rxb1 27. Rxb1 h6 28. Ne5 Ra7 29. g3 Bc3 30. Rd1 Ra1 31. Rxa1 Bxa1 32. Nf3 Ne4 33. Kf1 Bc3 34. Ke2 f6 35. Kf1 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2002.08.06"]
[Round "2"]
[White "Schenkeveld, Daniel"]
[Black "Elgersma, Siebren"]
[Result "1-0"]
[ECO "C30"]
[PlyCount "49"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[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. f4 d6 4. Nf3 Nc6 5. Bb5 Bd7 6. d3 Be7 7. Bxc6 Bxc6 8. fxe5 dxe5 9. Nxe5 0-0 10. Nxc6 bxc6 11. 0-0 Qd4+ 12. Kh1 Qe5 13. Bf4 Qe6 14. Bxc7 Rac8 15. Bf4 Bd6 16. Bxd6 Qxd6 17. Qf3 Kh8 18. Rae1 Rb8 19. e5 Qd7 20. exf6 g6 21. Qf4 Rxb2 22. Qh6 Rg8 23. Re4 Qd8 24. Qxh7+ Kxh7 25. Rh4# 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2002.08.05"]
[Round "1"]
[White "Elgersma, Siebren"]
[Black "Tillema, Harm"]
[Result "1-0"]
[ECO "B30"]
[PlyCount "69"]
[EventDate "2002.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Be2 Nc6 4. 0-0 g6 5. Nc3 Nf6 6. d3 Bg7 7. Bg5 0-0 8. a3 a6 9. Rb1 Be6 10. b4 cxb4 11. axb4 Nxe4 12. dxe4 Bxc3 13. Bh6 Re8 14. b5 Ne5 15. Nxe5 Bxe5 16. Qc1 d5 17. Rd1 Qc7 18. exd5 Bxh2+ 19. Kf1 Bf5 20. Rd2 f6 21. b6 Qe5 22. Bd3 g5 23. Bxf5 Qxf5 24. Rb3 Bf4 25. Rbd3 Qg6 26. Bxg5 fxg5 27. Qe1 Bxd2 28. Qxd2 h6 29. Qe1 Qxb6 30. Rb3 Qc5 31. Qe6+ Kh7 32. Qe4+ Kg7 33. Qe5+ Kg6 34. Qe6+ Kh5 35. Rh3# 1-0

