[Event "Leiden LCT op-B 09th"]
[Site "Leiden"]
[Date "2015.07.25"]
[Round "8"]
[White "Kohlbeck, Ton"]
[Black "De Jong, Sebastiaan"]
[Result "0-1"]
[ECO "D60"]
[WhiteElo "2008"]
[PlyCount "34"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 Nbd7 6. c5 0-0 7. Nf3 Ne4 8. Nxe4 dxe4 9. Bxe7 Qxe7 10. Nd2 f5 11. Bc4 Kh8 12. 0-0 e5 13. Nb3 f4 14. dxe5 Nxe5 15. Rc1 f3 16. Nd2 Qh4 17. Re1 Ng4 0-1

[Event "Leiden LCT op-B 09th"]
[Site "Leiden"]
[Date "2015.07.24"]
[Round "7"]
[White "Van Randen, Fred"]
[Black "De Jong, Sebastiaan"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1916"]
[PlyCount "104"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 g6 5. Nc3 Bg7 6. Be3 a6 7. Be2 Nf6 8. h3 b5 9. e5 Nfd7 10. Bf3 Ra7 11. exd6 exd6 12. Nge2 Bb7 13. Bxb7 Rxb7 14. 0-0 0-0 15. Rc1 Nb6 16. Nf4 Nc4 17. Qf3 Qd7 18. b3 Nb6 19. Nfd5 Nxd5 20. Nxd5 f5 21. Rfd1 h6 22. Nb4 g5 23. Qd5+ Kh8 24. f3 f4 25. Bf2 a5 26. Nc6 Na6 27. Nxa5 Rb6 28. a3 Nc7 29. Qe4 Re8 30. Qd3 Nd5 31. Re1 Ra8 32. b4 Rbb8 33. Qe4 Nf6 34. Qe6 Qxe6 35. Rxe6 d5 36. Rcc6 Ne8 37. Ra6 Rxa6 38. Rxa6 Rc8 39. Rc6 Rb8 40. Kf1 Kg8 41. Ke2 Nf6 42. Kd3 h5 43. g3 g4 44. hxg4 hxg4 45. gxf4 gxf3 46. Ke3 Ng4+ 47. Kxf3 Nxf2 48. Kxf2 Bxd4+ 49. Kf3 Bb2 50. Rc7 d4 51. Nc6 Re8 52. Ne5 Ra8 1/2-1/2

[Event "Leiden LCT op-B 09th"]
[Site "Leiden"]
[Date "2015.07.18"]
[Round "2"]
[White "Bekker, Michael"]
[Black "De Jong, Sebastiaan"]
[Result "1-0"]
[ECO "E07"]
[WhiteElo "1910"]
[PlyCount "49"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. g3 Nf6 4. Bg2 c6 5. Nf3 Nbd7 6. 0-0 Be7 7. Nc3 0-0 8. Ne5 Nxe5 9. dxe5 Nd7 10. cxd5 exd5 11. f4 d4 12. Ne4 Nc5 13. Qc2 Bf5 14. Nf6+ Bxf6 15. Qxf5 Be7 16. b4 Na4 17. Be4 g6 18. Qg4 f5 19. exf6 Bxf6 20. Bd3 Qc8 21. f5 Kg7 22. Qh3 g5 23. Bxg5 Bxg5 24. f6+ Kf7 25. Qxh7+ 1-0

[Event "Waling Dijkstra Gr-A"]
[Site "Leeuwarden"]
[Date "2009.11.15"]
[Round "5"]
[White "De Jong, Sebastiaan"]
[Black "De Dreu, Dies"]
[Result "1-0"]
[ECO "A05"]
[BlackElo "2019"]
[PlyCount "71"]
[EventDate "2009.11.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. Nf3 b5 2. g3 Bb7 3. Bg2 Nf6 4. 0-0 e6 5. d3 Be7 6. e4 0-0 7. a4 b4 8. Nbd2 d6 9. Nc4 a5 10. e5 Nfd7 11. h4 dxe5 12. Ncxe5 Nxe5 13. Nxe5 Bxg2 14. Kxg2 Qd5+ 15. Qf3 Qxf3+ 16. Kxf3 Rd8 17. Rd1 f6 18. Nc4 Nc6 19. Be3 Rd5 20. c3 Rad8 21. Ke2 e5 22. Rd2 Kf7 23. Rad1 Ke6 24. d4 exd4 25. Bxd4 Nxd4+ 26. Rxd4 Rxd4 27. Rxd4 Rxd4 28. cxd4 Kd5 29. Nxa5 f5 30. Kd3 h5 31. Nc4 f4 32. a5 Bf6 33. Ne5 c5 34. a6 c4+ 35. Kc2 b3+ 36. Kc1 1-0

[Event "Waling Dijkstra Gr-A"]
[Site "Leeuwarden"]
[Date "2009.11.14"]
[Round "3"]
[White "De Jong, Sebastiaan"]
[Black "Lootsma, Jan"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "91"]
[EventDate "2009.11.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 d5 3. Bg2 c5 4. 0-0 Nf6 5. d3 Be7 6. Nbd2 Nc6 7. e4 Qc7 8. Re1 b6 9. e5 Nd7 10. Qe2 Bb7 11. a3 h6 12. c4 d4 13. h4 a5 14. Ne4 0-0-0 15. Bf4 Rdg8 16. Nd6+ Bxd6 17. exd6 Qd8 18. Ne5 Ndxe5 19. Bxe5 f6 20. Bf4 e5 21. Bd2 Qxd6 22. b4 g5 23. bxc5 Qxc5 24. h5 Ne7 25. Bxb7+ Kxb7 26. Reb1 Kc7 27. Rb5 Qc6 28. Rab1 Rb8 29. c5 Nd5 30. cxb6+ Kb7 31. Rxa5 Ra8 32. Rxa8 Rxa8 33. Qe4 Nxb6 34. Qh7+ Qc7 35. Qe4+ Qc6 36. Qe1 Qd5 37. Bb4 f5 38. Be7 e4 39. Qb4 Ra6 40. Bc5 Qc6 41. dxe4 d3 42. Be3 fxe4 43. Qe7+ Ka8 44. Rc1 Nc4 45. Qf8+ Kb7 46. Qf7+ 1-0

[Event "Waling Dijkstra Gr-A"]
[Site "Leeuwarden"]
[Date "2009.11.14"]
[Round "4"]
[White "Mulder, Catrinus"]
[Black "De Jong, Sebastiaan"]
[Result "1/2-1/2"]
[ECO "C24"]
[PlyCount "82"]
[EventDate "2009.11.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. Bb3 Bd6 6. 0-0 0-0 7. Re1 Re8 8. Bg5 a5 9. a3 dxe4 10. dxe4 Na6 11. Nc3 Nc5 12. Ba2 a4 13. h3 Bc7 14. Qe2 Be6 15. Bxe6 Nxe6 16. Rad1 Qe7 17. Bh4 Nf4 18. Qc4 h6 19. Ne2 g5 20. Bg3 Qe6 21. Qxe6 Rxe6 22. Nc3 Bb6 23. Bxf4 exf4 24. e5 Ne8 25. Rd7 Bc7 26. Ne4 Kf8 27. Nc5 Re7 28. Red1 Ra5 29. Nxb7 Rb5 30. Nd8 Bxd8 31. Rxd8 Rxb2 32. Nd4 Rxe5 33. Nxc6 Re4 34. f3 Re2 35. Nb4 Kg7 36. Ra8 Nc7 37. Rxa4 Nb5 38. Ra6 Nxa3 39. Nd3 Rbxc2 40. Rxa3 Rxg2+ 41. Kf1 Rh2 1/2-1/2

[Event "Waling Dijkstra Gr-A"]
[Site "Leeuwarden"]
[Date "2009.11.14"]
[Round "2"]
[White "Van den Berg, Harmen"]
[Black "De Jong, Sebastiaan"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "2137"]
[PlyCount "83"]
[EventDate "2009.11.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. Bb3 Bd6 6. Nc3 Bc7 7. Bg5 d4 8. Ne2 0-0 9. Qd2 a5 10. a4 Be6 11. Bxe6 fxe6 12. c3 c5 13. h4 Qe8 14. Ng3 Nbd7 15. h5 Nb6 16. h6 g6 17. Bxf6 Rxf6 18. Qg5 Nd7 19. Nh5 Rf7 20. Ng7 Qe7 21. Qg4 Ra6 22. Ng5 Rf4 23. Qg3 Bd8 24. Nf3 Rb6 25. 0-0 Kh8 26. Nxe5 Nxe5 27. Qxf4 Nxd3 28. Qd2 c4 29. cxd4 Qh4 30. Qxa5 Rxb2 31. g3 Bxa5 32. gxh4 Nf4 33. Kh2 Bd8 34. Rac1 Rb4 35. Rfd1 Ne2 36. Rc2 Bc7+ 37. Kh1 Nf4 38. Rdc1 Rb3 39. Rc3 Ne2 40. Rxb3 Nxc1 41. Rc3 Nd3 42. Rxc4 1-0

[Event "Waling Dijkstra Gr-A"]
[Site "Leeuwarden"]
[Date "2009.11.13"]
[Round "1"]
[White "De Jong, Sebastiaan"]
[Black "Kamstra, Jippe"]
[Result "0-1"]
[ECO "D78"]
[BlackElo "2106"]
[PlyCount "78"]
[EventDate "2009.11.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 Nf6 4. 0-0 0-0 5. c4 c6 6. d4 d5 7. Nc3 Bf5 8. Bf4 Ne4 9. Qb3 b6 10. cxd5 Nxc3 11. Qxc3 Qxd5 12. Ne5 Qe6 13. e4 Bh3 14. d5 cxd5 15. exd5 Qf5 16. Bxh3 Qxh3 17. Qc7 Na6 18. Qxe7 Nc5 19. Qc7 Rac8 20. Qxa7 g5 21. Bxg5 Bxe5 22. Qxb6 Nd7 23. Qh6 Qf5 24. Be7 Rfe8 25. Qg5+ Qxg5 26. Bxg5 Bxb2 27. Rab1 Rc2 28. Rfe1 Rxe1+ 29. Rxe1 Ne5 30. Kg2 Bd4 31. Be3 Bc3 32. Rc1 Rxc1 33. Bxc1 Kf8 34. Bh6+ Ke7 35. f4 Ng4 36. Bg5+ f6 37. Kh3 Ne3 38. Bh6 Nf5 39. d6+ Kf7 0-1

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "8"]
[White "De Jong, Sebastiaan"]
[Black "Backhuis, Roel"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "66"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 h6 5. 0-0 d6 6. Be3 Bxe3 7. fxe3 Bg4 8. h3 Bh5 9. Nbd2 Nf6 10. Qe1 Na5 11. Bd5 c6 12. Bb3 0-0 13. Rd1 Qc7 14. a3 Nxb3 15. Nxb3 Qb6 16. Kh1 Rfe8 17. Rc1 Bg6 18. Nh4 d5 19. exd5 Nxd5 20. e4 Nf4 21. Qf2 Qxf2 22. Rxf2 Rad8 23. Rcf1 Rd7 24. Kh2 Kh7 25. g3 Ne6 26. Nf3 f6 27. h4 Kg8 28. Kh3 Bh5 29. Nfd2 Bf7 30. Nc4 Kh7 31. Nxe5 Rc7 32. Nc4 Bh5 33. g4 Bg6 1/2-1/2

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "3"]
[White "De Jong, Sebastiaan"]
[Black "De Witte, Marieke"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "96"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 d6 5. h3 Nf6 6. Nc3 Qe7 7. Bg5 Be6 8. Bd5 Rb8 9. 0-0 h6 10. Bh4 g5 11. Bg3 Nh5 12. Bh2 Nf4 13. Bxf4 exf4 14. Re1 g4 15. d4 Bb6 16. Bxc6+ bxc6 17. d5 gxh3 18. dxe6 Qxe6 19. Nh4 Qf6 20. Qg4 h2+ 21. Kxh2 Bxf2 22. Rf1 Qxh4+ 23. Qxh4 Bxh4 24. Rxf4 Bg5 25. Rf2 Rxb2 26. Raf1 Rh7 27. Kh3 Ke7 28. a4 Rb4 29. Re2 Bf6 30. Nd1 Rxa4 31. Nf2 Bd4 32. Nd3 a5 33. Nc1 Ra1 34. Rfe1 Rh8 35. Nb3 Rxe1 36. Rxe1 Bc3 37. Re3 a4 38. Rxc3 axb3 39. cxb3 Kd7 40. Rf3 Rf8 41. Rf6 h5 42. Kh4 Ke7 43. Rh6 Rb8 44. Rxh5 Rxb3 45. Rf5 c5 46. g4 Rb6 47. Kh5 Rc6 48. Rd5 c4 0-1

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "1"]
[White "De Jong, Sebastiaan"]
[Black "Hofman, Marnix"]
[Result "0-1"]
[ECO "C15"]
[PlyCount "112"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd2 dxe4 5. Nge2 Bxc3 6. Bxc3 Nf6 7. g3 Bd7 8. Bg2 Bc6 9. 0-0 0-0 10. Re1 Re8 11. Qd2 e5 12. Rad1 exd4 13. Nxd4 Bd5 14. a3 Nbd7 15. Nf5 Be6 16. Qg5 Bxf5 17. Qxf5 Re6 18. Bxf6 Qxf6 19. Bxe4 Qxf5 20. Bxf5 Rxe1+ 21. Rxe1 Nc5 22. Re7 Na6 23. Be4 Nc5 24. Bd5 Ne6 25. b3 Kf8 26. Rd7 Rc8 27. Bxb7 Rd8 28. Rd5 Rxd5 29. Bxd5 Nd4 30. Be4 Ke7 31. Bxh7 g6 32. Kg2 Kf6 33. Kh3 Kg7 34. Bxg6 fxg6 35. Kg4 Nxc2 36. a4 Nd4 37. b4 Nc2 38. b5 Nd4 39. h4 Nb3 40. Kg5 Nc5 41. a5 Nb3 42. b6 cxb6 43. axb6 axb6 44. Kf4 Nc5 45. g4 b5 46. Ke3 b4 47. f4 b3 48. Kd2 b2 49. Kc2 Nd3 50. Kb1 Nxf4 51. Kxb2 Ng2 52. h5 g5 53. Kc3 Ne3 54. Kd3 Nxg4 55. Ke4 Kh6 56. Kf3 Kxh5 0-1

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "6"]
[White "De Jong, Sebastiaan"]
[Black "Kordel, Mathias"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "83"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Qb3 Qxb3 7. axb3 cxd4 8. cxd4 Bb4+ 9. Nc3 a6 10. Bd2 Nge7 11. Bd3 Ba5 12. Bb1 b5 13. 0-0 Bb6 14. Be3 Bb7 15. Rd1 Na5 16. Bc2 Nec6 17. Rd2 0-0 18. Na2 Rac8 19. Rd3 Rc7 20. Rc1 Rfc8 21. Re1 Ne7 22. Bd1 Nec6 23. b4 Nc4 24. Bc1 Ba7 25. b3 Nb6 26. Bd2 Nd7 27. Bc3 Bb6 28. Rd2 a5 29. Bc2 axb4 30. Bxb4 Nxb4 31. Nxb4 Ba5 32. Rc1 Bxb4 33. Re2 Ba3 34. Bxh7+ Kxh7 35. Rd1 Rc1 36. Rxc1 Rxc1+ 37. Re1 Rxe1+ 38. Nxe1 Bb2 39. Nf3 Ba6 40. h4 b4 41. g4 Be2 42. Ng5+ 0-1

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "7"]
[White "Heine, Ivar"]
[Black "De Jong, Sebastiaan"]
[Result "0-1"]
[ECO "C57"]
[PlyCount "80"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. d3 Be6 7. Nxe6 fxe6 8. Bb5 Qd7 9. 0-0 0-0-0 10. Bd2 Bc5 11. Nc3 Rhf8 12. Bxc6 Qxc6 13. Qh5 Nf4 14. Bxf4 exf4 15. Qxh7 Bb6 16. Qe4 Qd6 17. Rfe1 Rde8 18. Re2 e5 19. Rae1 g5 20. Qd5 Bd4 21. Qxd6 cxd6 22. Nb5 Bc5 23. d4 a6 24. dxc5 axb5 25. cxd6 Rf5 26. Rd2 Kd7 27. Kf1 e4 28. Rde2 Rfe5 29. Rd1 R8e6 30. Red2 e3 31. fxe3 fxe3 32. Re2 Rxd6 33. Rxd6+ Kxd6 34. g3 Kd5 35. Kg2 Ke4 36. b3 b4 37. Re1 Rd5 38. h4 g4 39. Kf1 Rd2 40. Kg1 e2 0-1

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "4"]
[White "Malandain, L."]
[Black "De Jong, Sebastiaan"]
[Result "0-1"]
[ECO "D00"]
[PlyCount "94"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. e3 Bf5 3. Nc3 Nf6 4. Bd3 Bxd3 5. Qxd3 e6 6. Nge2 Nc6 7. e4 Bb4 8. e5 Nd7 9. a3 Bxc3+ 10. Nxc3 Qe7 11. 0-0 0-0-0 12. Rd1 f6 13. exf6 gxf6 14. Qg3 Rdg8 15. Qf4 Qg7 16. g3 h5 17. h4 Qg6 18. Rd2 Rg7 19. Nb5 e5 20. dxe5 fxe5 21. Qf3 a6 22. Nc3 d4 23. Ne4 Nf8 24. Re2 Rf7 25. Qd3 Qg4 26. Kg2 Ne6 27. Kh2 Rg8 28. f4 exf4 29. gxf4 Nxf4 30. Bxf4 Qxf4+ 31. Kh1 Qxh4+ 32. Rh2 Qg4 33. Qh3 Qxh3 34. Rxh3 Rf4 35. Ng3 Rf3 36. Kh2 Rf2+ 37. Kh1 Rxc2 38. Rb1 d3 39. Ne4 Rd8 40. Rxh5 d2 41. Nxd2 Rdxd2 42. b4 Ra2 43. Rh3 b6 44. b5 axb5 45. Rhb3 Nd4 46. Rb4 c5 47. Rc1 Nf3 0-1

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "9"]
[White "Meyles, Luuk"]
[Black "De Jong, Sebastiaan"]
[Result "1-0"]
[ECO "D00"]
[PlyCount "91"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Bf4 Nf6 4. e3 Nbd7 5. Bd3 b6 6. Ne2 c5 7. 0-0 Bb7 8. Nbc3 Rc8 9. b3 Be7 10. Qc2 Nf8 11. Rac1 Ng6 12. Bg3 Bd6 13. Bxd6 Qxd6 14. Nb5 Qd7 15. Nxa7 Ra8 16. Nb5 Rc8 17. Ng3 0-0 18. Rfd1 Rc6 19. a4 Ra8 20. f3 Rcc8 21. e4 Qc6 22. e5 Ne8 23. cxd5 exd5 24. Nf5 Kf8 25. Nbd6 Nxd6 26. Nxd6 Rd8 27. Bb5 Qc7 28. g3 Kg8 29. h4 Nf8 30. dxc5 bxc5 31. Qxc5 Qxc5+ 32. Rxc5 Rab8 33. Nxb7 Rxb7 34. Rcxd5 Rdb8 35. Rd8 g6 36. Rxb8 Rxb8 37. Bc4 Kg7 38. Kf2 Re8 39. f4 Ne6 40. Bxe6 Rxe6 41. Rd6 Re8 42. b4 Rb8 43. b5 Ra8 44. Ra6 Rb8 45. Ke3 Kf8 46. Ra7 1-0

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "2"]
[White "Pouw, Pieter"]
[Black "De Jong, Sebastiaan"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "51"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Be7 4. Bc4 Nf6 5. Nbd2 c6 6. 0-0 0-0 7. Re1 Bg4 8. c3 Nbd7 9. Qb3 Rb8 10. Be2 Be6 11. Qc2 h6 12. Nf1 Kh8 13. Ng3 Ng8 14. Be3 Rc8 15. Rad1 Ngf6 16. dxe5 dxe5 17. Nxe5 Qc7 18. Nxd7 Bxd7 19. Qc1 Ng8 20. Bf4 Qd8 21. Bg4 Nf6 22. Bxd7 Nxd7 23. Bxh6 gxh6 24. Qxh6+ Kg8 25. Nh5 Bf6 26. Rxd7 1-0

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "5"]
[White "Winter, R."]
[Black "De Jong, Sebastiaan"]
[Result "1-0"]
[ECO "E10"]
[PlyCount "95"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nc6 5. a3 g6 6. Bg5 Bg7 7. e3 h6 8. Bh4 Qe7 9. cxd5 exd5 10. Nxd5 Qd6 11. Nxf6+ Bxf6 12. Bxf6 Qxf6 13. Bb5 0-0 14. Rc1 Qd6 15. Bxc6 bxc6 16. Ne5 Bb7 17. 0-0 Qd5 18. f3 Rfe8 19. Rc5 Qd6 20. Qb3 Qe6 21. Qxb7 Rab8 22. Qxc6 Qxc6 23. Rxc6 Rb7 24. Rfc1 Re7 25. e4 Kg7 26. b4 h5 27. Kf2 f6 28. Nc4 Rb8 29. d5 Rd8 30. d6 cxd6 31. Rxd6 Rc8 32. Ke3 Rec7 33. Rd4 Kh6 34. Kd3 Kg5 35. Rc2 a6 36. Ne3 Rxc2 37. Nxc2 Rc6 38. Rd5+ Kh6 39. f4 Kg7 40. e5 fxe5 41. fxe5 Kf7 42. Nd4 Rc7 43. e6+ Ke7 44. Rd7+ Rxd7 45. exd7 Kxd7 46. Ke3 Ke8 47. Kf4 Kf7 48. a4 1-0

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1994.??.??"]
[Round "1"]
[White "Bakker, Sven"]
[Black "De Jong, Sebastiaan"]
[Result "1-0"]
[ECO "D07"]
[PlyCount "46"]
[EventDate "1994.??.??"]
[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 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Nc6 5. Bf4 Nh5 6. Bg3 Nxg3 7. hxg3 Bb4 8. Qc2 h6 9. e3 b6 10. cxd5 Qxd5 11. Bd3 Bb7 12. 0-0 Bxc3 13. Qxc3 Rc8 14. b4 Ne7 15. e4 Qd6 16. Rac1 0-0 17. Rfd1 Rfd8 18. a3 Nc6 19. Bb1 e5 20. d5 f6 21. dxc6 Qxd1+ 22. Rxd1 Rxd1+ 23. Kh2 Bxc6 1-0

[Event "NED-ch U16"]
[Site "Hengelo"]
[Date "1994.??.??"]
[Round "4"]
[White "De Jong, Sebastiaan"]
[Black "De Boer, Willemijn"]
[Result "1/2-1/2"]
[ECO "C44"]
[PlyCount "79"]
[EventDate "1994.??.??"]
[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 f6 4. Bb5 a6 5. Bxc6 dxc6 6. dxe5 Qe7 7. Qd4 Bg4 8. exf6 Nxf6 9. Nbd2 Rd8 10. Qe3 Qc5 11. Qxc5 Bxc5 12. 0-0 0-0 13. e5 Nd7 14. h3 Bxf3 15. Nxf3 Rde8 16. Re1 Rf5 17. Be3 b6 18. Bxc5 Nxc5 19. b3 Nd7 20. e6 Nf8 21. Nd4 Rf6 22. Nxc6 Rfxe6 23. Rxe6 Rxe6 24. Nb4 a5 25. Nd5 c5 26. Kf1 Kf7 27. Rd1 Nd7 28. Nf4 Re7 29. Rd6 Ke8 30. Nd5 Re5 31. Nxb6 Nxb6 32. Rxb6 Re7 33. Rb5 Rc7 34. Rxa5 c4 35. b4 Kd7 36. a4 Kd6 37. Ra6+ Kd5 38. c3 Rd7 39. Ra5+ Kc6 40. Rc5+ 1/2-1/2

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "1993.??.??"]
[Round "1"]
[White "De Jong, Sebastiaan"]
[Black "Buzing, Pieter C"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "32"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 Bd7 7. Be3 Rc8 8. Qc2 cxd4 9. Nxd4 Nxd4 10. Bxd4 Qxd4 11. cxd4 Rxc2 12. Na3 Bb4+ 13. Kd1 Rd2+ 14. Kc1 Rxe2 15. Nc2 Ba5 16. b4 Ba4 0-1

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "1993.??.??"]
[Round "3"]
[White "De Jong, Sebastiaan"]
[Black "Luyben, J."]
[Result "1-0"]
[ECO "C62"]
[PlyCount "35"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 d6 5. Bb5 Bd7 6. Be3 a6 7. Ba4 Nf6 8. Nc3 Ne5 9. Bb3 c5 10. Nf3 Ng6 11. Ng5 Be6 12. Nxe6 fxe6 13. Bxe6 Qe7 14. Bf5 Qf7 15. 0-0 Be7 16. Nd5 0-0 17. Nc7 Rac8 18. Be6 1-0

