[Event "NED-chT Promotion Liga 1"]
[Site "Netherlands"]
[Date "2021.06.12"]
[Round "1.1"]
[White "Van Tellingen, Frank"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2288"]
[BlackElo "2156"]
[PlyCount "77"]
[EventDate "2021.06.12"]
[EventType "team-k.o."]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "De Waagtoren"]
[BlackTeam "Leiden Philidor"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. c3 Bg7 12. exf5 Bxf5 13. Nc2 0-0 14. Nce3 Be6 15. Bd3 f5 16. 0-0 Rb8 17. Qh5 Qd7 18. Bc2 Qf7 19. Qh4 h6 20. f4 e4 21. Rad1 b4 22. Ba4 Na7 23. Bb3 Kh7 24. Kh1 bxc3 25. bxc3 Nb5 26. g4 fxg4 27. f5 Bxd5 28. Nxd5 Nxc3 29. Nxc3 Rxb3 30. axb3 Bxc3 31. Rxd6 Bf6 32. Qxg4 e3 33. Qe4 Qxb3 34. Rb1 Qa3 35. Rd7+ Kh8 36. Qb7 e2 37. Rh7+ Kg8 38. Rg1+ Bg5 39. Qg7# 1-0

[Event "Pula op 33rd"]
[Site "Pula"]
[Date "2019.06.29"]
[Round "9"]
[White "Van der Zon, Stef"]
[Black "Franciskovic, Borka"]
[Result "1/2-1/2"]
[ECO "E57"]
[WhiteElo "2148"]
[BlackElo "2261"]
[PlyCount "11"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRO"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 1/2-1/2

[Event "Pula op 33rd"]
[Site "Pula"]
[Date "2019.06.26"]
[Round "6"]
[White "Trkulja, Goran"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2299"]
[BlackElo "2148"]
[PlyCount "106"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRO"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 0-0 5. g3 c5 6. Bg2 Nc6 7. 0-0 d6 8. d4 Ne4 9. h3 f5 10. e3 e6 11. Qc1 Qf6 12. a3 g5 13. Ra2 e5 14. dxe5 dxe5 15. Nfd2 Nd6 16. Nc3 Qh6 17. Nb5 Ne8 18. f4 a6 19. Nc3 gxf4 20. gxf4 e4 21. Nd5 Be6 22. Nb1 Rd8 23. Bxg7 Qxg7 24. Nbc3 Nf6 25. Rd2 Kh8 26. Qb2 Bxd5 27. Nxd5 Nxd5 28. Qxg7+ Kxg7 29. cxd5 Rd6 30. Rc1 Na5 31. Rc3 Rfd8 32. b4 cxb4 33. axb4 Nc6 34. Bxe4 fxe4 35. Rg2+ Kf7 36. dxc6 bxc6 37. Rc4 Re8 38. Ra2 h5 39. h4 Rd1+ 40. Kh2 Re1 41. Rc3 Rd8 42. Rxc6 Rxe3 43. Rcxa6 Rdd3 44. Ra7+ Ke6 45. Rg7 Rh3+ 46. Kg2 Rxh4 47. Rg5 Rxf4 48. Rxh5 Rg4+ 49. Kh2 e3 50. Ra6+ Kf7 51. Rh7+ Kg8 52. Re7 Rg7 53. Rxg7+ Kxg7 1/2-1/2

[Event "Pula op 33rd"]
[Site "Pula"]
[Date "2019.06.24"]
[Round "3"]
[White "Van der Zon, Stef"]
[Black "Jelen, Igor"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2148"]
[BlackElo "2353"]
[PlyCount "59"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRO"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. Nc2 0-0 13. a4 bxa4 14. Rxa4 a5 15. b3 Bb7 16. Bc4 Nb8 17. 0-0 Nd7 18. b4 Rc8 19. Qd3 axb4 20. cxb4 Nb6 21. Nxb6 Qxb6 22. b5 Qc5 23. Na1 Rb8 24. Nb3 Qb6 25. Rd1 Be7 26. Na5 Ba8 27. Rb1 Rfc8 28. g3 Bd8 29. Qb3 Qc7 30. Bd5 1/2-1/2

[Event "Pula op 33rd"]
[Site "Pula"]
[Date "2019.06.24"]
[Round "4"]
[White "Zufic, Miroslav"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2380"]
[BlackElo "2148"]
[PlyCount "35"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRO"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 d6 5. d3 Be7 6. Nd2 Bg5 7. a4 Nf6 8. Nf1 Bxc1 9. Qxc1 0-0 10. Ne3 Nh5 11. Ncd5 Be6 12. c3 a6 13. Qd1 Nf4 14. g3 Nh3 15. Qh5 Qg5 16. Qxg5 Nxg5 17. h4 b5 18. Ba2 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2017.08.03"]
[Round "9"]
[White "Van der Zon, Stef"]
[Black "Mesman, Edwyn"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2103"]
[BlackElo "2230"]
[PlyCount "29"]
[EventDate "2017.07.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Nxd4 a6 6. Bxd7+ Bxd7 7. 0-0 e5 8. Nb3 h6 9. Nc3 Nf6 10. Be3 Be7 11. Nd5 Nxd5 12. Qxd5 Bc6 13. Qd3 0-0 14. Rad1 Rc8 15. Rfe1 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2017.07.25"]
[Round "1"]
[White "Van der Zon, Stef"]
[Black "Wiersma, Eelke"]
[Result "0-1"]
[ECO "B46"]
[WhiteElo "2103"]
[BlackElo "2352"]
[PlyCount "34"]
[EventDate "2017.07.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be3 Nf6 7. Bd3 d5 8. exd5 exd5 9. h3 Bd6 10. 0-0 0-0 11. Qd2 Re8 12. Rfe1 Bc7 13. Nce2 Ne5 14. Bg5 Qd6 15. Ng3 Bd7 16. Ngf5 Bxf5 17. Bxf5 Nc4 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2016.08.04"]
[Round "9"]
[White "Maddens, Martijn"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2126"]
[BlackElo "2057"]
[PlyCount "65"]
[EventDate "2016.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. dxc5 Qxc5 7. Na3 Nbd7 8. h3 Bh5 9. Nb5 a6 10. Be3 Qc8 11. Nbd4 e6 12. Be2 Be7 13. 0-0 0-0 14. a4 Rd8 15. Qc2 Bg6 16. Bd3 Bxd3 17. Qxd3 h6 18. Qe2 Qc7 19. Rfe1 Nc5 20. a5 Nd5 21. Bd2 Re8 22. b4 Nd7 23. Nxe6 Qc8 24. Ned4 Nxc3 25. Qd3 Nd5 26. Nf5 N7f6 27. Nxe7+ Rxe7 28. Rxe7 Nxe7 29. Rc1 Nc6 30. Ne5 Qd8 31. Qxd8+ Rxd8 32. Bc3 Ne7 33. Be1 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2016.08.03"]
[Round "8"]
[White "Van der Zon, Stef"]
[Black "Vos, Tjark"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2057"]
[BlackElo "2156"]
[PlyCount "59"]
[EventDate "2016.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. d3 d6 9. c3 Na5 10. Bc2 c5 11. Nbd2 Re8 12. Nf1 Bf8 13. Ng3 g6 14. d4 Qc7 15. d5 c4 16. Nh4 Nb7 17. h3 Qd8 18. a4 Bd7 19. axb5 axb5 20. Rxa8 Qxa8 21. f4 exf4 22. Bxf4 Nc5 23. Nf3 Qa2 24. e5 dxe5 25. Bxe5 Bg7 26. Qd4 Qxb2 27. Bxf6 Bxf6 28. Rxe8+ Kg7 29. Re5 Qxc2 30. Nh5+ 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2016.08.02"]
[Round "7"]
[White "Van Foreest, Lucas"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2367"]
[BlackElo "2057"]
[PlyCount "63"]
[EventDate "2016.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. h3 Nf6 7. Nc3 0-0 8. Be3 b6 9. a4 a5 10. 0-0 Qc7 11. Qd2 e5 12. Bh6 Nh5 13. Ne2 Ra7 14. b3 Re8 15. Bxg7 Nxg7 16. Qh6 Ne6 17. Nd2 Nd4 18. Nxd4 cxd4 19. f4 exf4 20. Rxf4 c5 21. Raf1 Qd8 22. Nf3 f6 23. Nd2 Rf7 24. h4 Ref8 25. R4f2 Bd7 26. h5 gxh5 27. e5 fxe5 28. Rxf7 Rxf7 29. Rxf7 Kxf7 30. Qxh7+ Ke6 31. Ne4 Bc6 32. Qg6+ 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2016.08.01"]
[Round "6"]
[White "Van der Zon, Stef"]
[Black "Maatman, Nick"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "2057"]
[BlackElo "2314"]
[PlyCount "90"]
[EventDate "2016.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. e5 c5 5. dxc5 Nc6 6. Ndf3 Bxc5 7. Bd3 f6 8. Qe2 fxe5 9. Nxe5 Nxe5 10. Qxe5 Nf6 11. Nh3 0-0 12. 0-0 Bd6 13. Qg5 e5 14. Bf5 h6 15. Qg6 Bxf5 16. Qxf5 Qe7 17. Qg6 Rac8 18. Bxh6 Qf7 19. Qxf7+ Kxf7 20. Ng5+ Kg6 21. Bxg7 Kxg5 22. Bxf8 Bxf8 23. c3 Kf5 24. Rad1 b5 25. Rd3 b4 26. f3 bxc3 27. Rxc3 Rd8 28. Rc6 Bd6 29. Kf2 d4 30. Rfc1 e4 31. fxe4+ Nxe4+ 32. Ke2 Bxh2 33. Kd3 Nf2+ 34. Ke2 Ng4 35. R1c5+ Ke4 36. Re6+ Ne5 37. Rh6 d3+ 38. Kd1 Bf4 39. Rh4 Rg8 40. Ra5 Rxg2 41. Ra4+ Ke3 42. Rh1 Ng4 43. Kc1 d2+ 44. Kc2 d1Q+ 45. Kxd1 Nf2+ 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2016.07.30"]
[Round "5"]
[White "Vedder, Richard"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2268"]
[BlackElo "2057"]
[PlyCount "124"]
[EventDate "2016.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. Nc2 Rb8 13. a4 bxa4 14. Ncb4 Nxb4 15. Nxb4 Bd7 16. Bxa6 Qa5 17. Qd5 Qxd5 18. exd5 0-0 19. 0-0 f5 20. Ra2 e4 21. Nc6 Rb6 22. Bc4 f4 23. Rxa4 Rxb2 24. Ra7 Bg4 25. h3 Bh5 26. Ne7+ Kh8 27. Nf5 e3 28. Nxg7 exf2+ 29. Rxf2 Rxf2 30. Kxf2 Bh4+ 31. Kf1 Bg6 32. Ne6 Rb8 33. Ke2 Bh5+ 34. Kd2 Bf2 35. Rd7 Be3+ 36. Kc2 Bg6+ 37. Bd3 Be8 38. Rd8 Rxd8 39. Nxd8 Bh5 40. Be4 Kg7 41. Kd3 Bc1 42. Kc2 Be3 43. Nb7 Kf6 44. Kd3 Ke5 45. c4 h6 46. Bf3 Bg6+ 47. Kc3 Bb6 48. Kb4 Be8 49. Bg4 Kd4 50. Be6 Bc7 51. Bg4 Bg6 52. Bf3 Be8 53. Kb3 Bd7 54. c5 dxc5 55. d6 Bb6 56. Bg4 Bc6 57. Bf3 c4+ 58. Kc2 Ba4+ 59. Kc1 c3 60. d7 Bxd7 61. Nd6 Bc5 62. Ne4 Ba3+ 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2016.07.29"]
[Round "4"]
[White "Van der Zon, Stef"]
[Black "Hendriks, Willy"]
[Result "1/2-1/2"]
[ECO "B49"]
[WhiteElo "2057"]
[BlackElo "2407"]
[PlyCount "149"]
[EventDate "2016.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. 0-0 Nf6 8. Be3 Bb4 9. Na4 0-0 10. Nxc6 bxc6 11. Nb6 Rb8 12. Nxc8 Rfxc8 13. Bxa6 Rf8 14. Bd3 Bd6 15. Bg5 Bxh2+ 16. Kh1 Be5 17. c3 h6 18. Bc1 Bf4 19. Qe2 Bxc1 20. Rfxc1 Qe5 21. b4 Qg5 22. g3 d5 23. a4 Rfd8 24. Rc2 c5 25. bxc5 dxe4 26. Bxe4 Qxc5 27. a5 Nxe4 28. Qxe4 Ra8 29. a6 Ra7 30. Qe3 Qc6+ 31. Kh2 Rxa6 32. Rxa6 Qxa6 33. c4 Qc6 34. Rc1 f6 35. Kg1 e5 36. c5 Rd4 37. Qb3+ Kh7 38. Qc2+ e4 39. Rb1 f5 40. Rb6 Qa4 41. Qxa4 Rxa4 42. Rd6 Rc4 43. c6 Rc1+ 44. Kg2 h5 45. Re6 g6 46. Re7+ Kh6 47. c7 Kg5 48. Rg7 Rc2 49. Kg1 Kf6 50. Rd7 h4 51. gxh4 f4 52. Rh7 Kf5 53. Rg7 Kg4 54. Rxg6+ Kf3 55. Rf6 Rxc7 56. h5 Rc1+ 57. Kh2 Rc5 58. h6 Rg5 59. Kh1 Rg4 60. Kh2 Rg5 61. Kh1 Rh5+ 62. Kg1 Kg4 63. Rg6+ Kf3 64. Rf6 Rh4 65. Rg6 Ke2 66. Re6 e3 67. fxe3 f3 68. Rf6 Rh5 69. e4 Rg5+ 70. Kh2 f2 71. h7 Rh5+ 72. Kg2 Rg5+ 73. Kh2 Rh5+ 74. Kg2 Rg5+ 75. Kh2 1/2-1/2

[Event "Delft Prinsenstad op 9th"]
[Site "Delft"]
[Date "2016.03.26"]
[Round "2"]
[White "Van der Zon, Stef"]
[Black "Haslinger, Stewart"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2037"]
[BlackElo "2513"]
[PlyCount "65"]
[EventDate "2016.03.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 171 Extra"]
[Source "ChessBase"]
[SourceDate "2016.04.26"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.26"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 0-0 7. Re1 c6 8. a4 h6 9. h3 Re8 10. Be3 Qc7 11. Qd2 exd4 12. Nxd4 Bf8 13. Bf4 Ne5 14. Bb3 Bd7 15. Bh2 Rad8 16. Rad1 a6 17. Kh1 b5 18. axb5 axb5 19. f4 b4 20. fxe5 dxe5 21. Nce2 Qb6 22. Bg1 Nxe4 23. Nf3 Bc5 24. Qd3 Nf2+ 25. Bxf2 Bxf2 26. Qg6 Be6 27. Bxe6 Rxe6 28. Qe4 Bxe1 29. Rxe1 Qf2 30. Qxb4 e4 31. Nfd4 c5 32. Qa5 Red6 33. c3 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2015.07.30"]
[Round "9"]
[White "Van der Zon, Stef"]
[Black "Afek, Yochanan"]
[Result "1/2-1/2"]
[ECO "B75"]
[WhiteElo "2003"]
[BlackElo "2273"]
[PlyCount "59"]
[EventDate "2015.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. 0-0 d6 10. f3 Bd7 11. a4 Rc8 12. Kh1 Nxd4 13. Bxd4 Be6 14. Bxe6 fxe6 15. Nb5 Nd7 16. c3 Nc5 17. b4 Na6 18. Qb3 Qd7 19. Rfd1 Bxd4 20. Nxd4 Nc7 21. Rab1 Kg7 22. Rd2 e5 23. Nc2 Ne6 24. Ne3 axb4 25. Qxb4 Rb8 26. a5 Rfc8 27. Nd5 Rc6 28. Rdb2 Nf4 29. Qb5 Qe8 30. Rb3 1/2-1/2

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.24"]
[Round "7"]
[White "Pijpers, Arthur"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2383"]
[BlackElo "2168"]
[PlyCount "69"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 0-0 12. Nc2 Bg5 13. a4 bxa4 14. Rxa4 a5 15. Bc4 Rb8 16. Ra2 Be6 17. h4 Bh6 18. Qd3 Kh8 19. Nce3 Ne7 20. Nf5 Bxf5 21. exf5 e4 22. Qxe4 Re8 23. Kf1 Qc8 24. g4 Nc6 25. Qc2 Ne5 26. Be2 Nxg4 27. Rxa5 Ra8 28. Rxa8 Qxa8 29. c4 Nf6 30. Bf3 Re5 31. Kg2 Nxd5 32. Bxd5 Qc8 33. Ra1 Rxd5 34. cxd5 Qe8 35. Re1 1-0

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.10"]
[Round "5"]
[White "Aalders, Peter"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "E89"]
[WhiteElo "1884"]
[BlackElo "2168"]
[PlyCount "49"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. Nge2 c6 8. Qd2 Nbd7 9. d5 cxd5 10. cxd5 Nb6 11. b3 Bd7 12. g4 h5 13. g5 Nh7 14. Nc1 f6 15. gxf6 Bxf6 16. Nd3 Bh4+ 17. Kd1 Ng5 18. Bxg5 Bxg5 19. Qg2 Rxf3 20. Be2 Rh3 21. Rg1 Bg4 22. Kc2 Rc8 23. Bxg4 hxg4 24. Qxg4 Qc7 25. Qxc8+ 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.03"]
[Round "4"]
[White "Van der Zon, Stef"]
[Black "Van Wissen, Michiel"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "2168"]
[BlackElo "2248"]
[PlyCount "58"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Bd3 c5 5. dxc5 Nf6 6. Qe2 0-0 7. Ngf3 Nc6 8. 0-0 Nb4 9. Nb3 a5 10. a4 b6 11. e5 Nd7 12. cxb6 Nxd3 13. cxd3 Qxb6 14. Qc2 Rb8 15. Nbd4 Bc5 16. Nb5 Ba6 17. d4 Bb4 18. Ng5 g6 19. Qd3 Bxb5 20. axb5 Qxb5 21. Qh3 h5 22. g4 Qe2 23. f3 Rbc8 24. gxh5 Rxc1 25. hxg6 Qxf1+ 26. Qxf1 Rxf1+ 27. Rxf1 fxg6 28. Nxe6 Rc8 29. Nf4 Rc4 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.05.27"]
[Round "3"]
[White "De Jeu, Marcel"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1965"]
[BlackElo "2168"]
[PlyCount "58"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 0-0 5. e4 c5 6. Nge2 Nc6 7. 0-0 d6 8. d3 Nd4 9. Rb1 Ne8 10. a3 Bg4 11. h3 Bf3 12. Be3 Bxg2 13. Kxg2 Qd7 14. b3 f5 15. f3 Nc7 16. Qd2 b5 17. Bh6 b4 18. axb4 cxb4 19. Bxg7 bxc3 20. Qxc3 Nxe2 21. Qb2 Rf7 22. Bh6 Nxg3 23. Kxg3 e5 24. f4 Re8 25. c5 dxc5 26. fxe5 Qxd3+ 27. Rf3 Qxe4 28. Ra1 Nd5 29. Ra5 Qe1+ 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.05.20"]
[Round "2"]
[White "Zwinkels, Wim"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1852"]
[BlackElo "2168"]
[PlyCount "86"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. f4 d6 7. Nf3 Nge7 8. 0-0 0-0 9. Bd2 Nd4 10. Rb1 Nec6 11. Ne2 Nxf3+ 12. Bxf3 Nd4 13. Bg2 Rb8 14. c3 Nxe2+ 15. Qxe2 b5 16. Be3 b4 17. d4 Qa5 18. Qd2 Qxa2 19. cxb4 cxd4 20. Bxd4 Bxd4+ 21. Qxd4 Qa6 22. Rfd1 Qb6 23. Ra1 a6 24. Bf1 Rd8 25. Ra4 Qxd4+ 26. Rxd4 Rb6 27. Kf2 Bb7 28. Ke3 Kf8 29. Rc4 Bc6 30. Ra1 Bb5 31. Rd4 Bxf1 32. Rxf1 Rdb8 33. Ra1 Rxb4 34. Rxb4 Rxb4 35. Rxa6 Rb3+ 36. Kd4 Rxb2 37. Rxd6 Rxh2 38. Ke5 Kg7 39. f5 gxf5 40. exf5 Re2+ 41. Kf4 Rf2+ 42. Kg4 Rxf5 43. Rd8 h5+ 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.05.13"]
[Round "1"]
[White "Van der Zon, Stef"]
[Black "Van de Peut, Aart A"]
[Result "1/2-1/2"]
[ECO "C19"]
[WhiteElo "2168"]
[BlackElo "1911"]
[PlyCount "56"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. Nf3 c5 6. a3 Bxc3+ 7. bxc3 Bd7 8. Bd3 c4 9. Be2 Ba4 10. h4 h6 11. Qd2 Qa5 12. h5 Nd7 13. Nh4 0-0-0 14. Rh3 f6 15. f4 Nf8 16. Rg3 Rg8 17. Ra2 f5 18. Kf2 g6 19. hxg6 Nfxg6 20. Nxg6 Rxg6 21. Rxg6 Nxg6 22. Qe3 Rg8 23. Qh3 Be8 24. Ra1 Qd8 25. Bd2 h5 26. Rh1 h4 27. Rg1 Rh8 28. Rh1 Qe7 1/2-1/2

[Event "Delft Prinsenstad op-A 7th"]
[Site "Delft"]
[Date "2014.04.20"]
[Round "5"]
[White "Gerlagh, Joris"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2072"]
[BlackElo "1952"]
[PlyCount "66"]
[EventDate "2014.04.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. exf5 Bxf5 12. c3 Bg7 13. Nc2 0-0 14. Nce3 Be6 15. g3 f5 16. Bg2 Rb8 17. 0-0 Kh8 18. Nc2 Qd7 19. Ncb4 Nxb4 20. Nxb4 Rb6 21. Bd5 a5 22. Bxe6 Qxe6 23. Qd5 Qh6 24. Nc2 Qh5 25. Rad1 f4 26. Rd3 Qf5 27. f3 fxg3 28. hxg3 Qg6 29. g4 Bh6 30. Qe4 Qxe4 31. fxe4 Rg8 32. Rg3 Bf4 33. Rg2 Rb7 1/2-1/2

[Event "Delft Prinsenstad op-A 7th"]
[Site "Delft"]
[Date "2014.04.20"]
[Round "6"]
[White "Van Oosterom, Chiel"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2392"]
[BlackElo "1952"]
[PlyCount "55"]
[EventDate "2014.04.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. 0-0 Nge7 5. Re1 a6 6. Bf1 Ng6 7. c3 d5 8. exd5 Qxd5 9. d4 cxd4 10. cxd4 Be7 11. Nc3 Qa5 12. d5 exd5 13. Nxd5 0-0 14. Nxe7+ Ncxe7 15. Bd2 Qb6 16. Bc3 Bg4 17. h3 Be6 18. Ng5 Bd5 19. Qd2 h6 20. Ne4 Rfd8 21. Ba5 Qc6 22. Bxd8 Rxd8 23. Nc3 Qb6 24. Rad1 Rd7 25. Nxd5 Rxd5 26. Qc3 Rc5 27. Qd4 Qc6 28. Rxe7 1-0

[Event "Delft Prinsenstad op-A 7th"]
[Site "Delft"]
[Date "2014.04.19"]
[Round "2"]
[White "Oudewaal, Vincent"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2052"]
[BlackElo "1952"]
[PlyCount "76"]
[EventDate "2014.04.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 0-0 12. Nc2 Bg5 13. h4 Bh6 14. g4 Bf4 15. Qf3 Be6 16. Nxf4 Qf6 17. 0-0-0 exf4 18. g5 Qe5 19. Kb1 Rab8 20. Nd4 Rfc8 21. a3 a5 22. Qd3 b4 23. cxb4 axb4 24. Nxe6 fxe6 25. a4 b3 26. Bh3 Kh8 27. f3 Rd8 28. Qc4 Na5 29. Qxe6 Qc5 30. Rc1 Qb4 31. Rc7 Qxa4 32. Bf5 Qa2+ 33. Kc1 Qa1+ 34. Kd2 Qxh1 35. Rxg7 Qg2+ 36. Ke1 Qg1+ 37. Ke2 Qe3+ 38. Kf1 Qc1+ 0-1

[Event "Delft Prinsenstad op-A 7th"]
[Site "Delft"]
[Date "2014.04.19"]
[Round "3"]
[White "Van der Zon, Stef"]
[Black "Glissenaar, Marcel"]
[Result "1-0"]
[ECO "B16"]
[WhiteElo "1952"]
[BlackElo "2045"]
[PlyCount "97"]
[EventDate "2014.04.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. c3 Bf5 7. Bd3 Bg6 8. Nf3 e6 9. Bf4 Bd6 10. Bg3 Qc7 11. Qe2 Nd7 12. 0-0-0 0-0-0 13. Nd2 Bxd3 14. Qxd3 f5 15. Bxd6 Qxd6 16. Qg3 Qd5 17. f3 Rhg8 18. Qf2 Qxa2 19. Kc2 Qa4+ 20. Nb3 a6 21. Ra1 Qc4 22. Ra5 e5 23. dxe5 Nf8 24. Re1 Ne6 25. g3 f4 26. g4 Rd7 27. Qe2 Qxe2+ 28. Rxe2 Rgd8 29. Rd2 Kc7 30. Rxd7+ Rxd7 31. h4 Kb6 32. Ra4 c5 33. Nd2 Kc6 34. Re4 b5 35. Nb3 h6 36. Nc1 c4 37. Ne2 Rd3 38. Nxf4 Rxf3 39. Nxe6 fxe6 40. Rd4 Rd3 41. Rxd3 cxd3+ 42. Kxd3 Kd5 43. b4 Kxe5 44. Ke3 Kd5 45. Kf4 Kc4 46. g5 hxg5+ 47. hxg5 Kxc3 48. g6 Kxb4 49. g7 1-0

[Event "Leiden Noteboom Memorial 74th"]
[Site "Leiden"]
[Date "2014.02.28"]
[Round "1"]
[White "Van der Zon, Stef"]
[Black "Kipper, Jens"]
[Result "0-1"]
[ECO "C12"]
[WhiteElo "1948"]
[BlackElo "2389"]
[PlyCount "66"]
[EventDate "2014.02.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4 g6 9. Bd3 Nxd2 10. Kxd2 c5 11. h4 Qa5 12. dxc5 Qxc5 13. Qf4 Bd7 14. h5 g5 15. Qf6 Qf8 16. f4 gxf4 17. Ne2 Bc6 18. Qxf4 Nd7 19. Nd4 Rg8 20. g4 Qg7 21. Nb5 Bxb5 22. Bxb5 0-0-0 23. Bxd7+ Rxd7 24. Rhg1 Rc7 25. Raf1 Kb8 26. Qf6 Qf8 27. g5 Qc5 28. Qf3 d4 29. gxh6 dxc3+ 30. Kc1 Rd8 31. Qd3 Qa3+ 32. Kd1 Rxd3+ 33. cxd3 Qxa2 0-1

[Event "Dieren Zesrondig-1"]
[Site "Dieren"]
[Date "2013.07.26"]
[Round "5"]
[White "Quint, Jorik"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "B73"]
[WhiteElo "1658"]
[BlackElo "1996"]
[PlyCount "64"]
[EventDate "2013.07.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 0-0 8. 0-0 d6 9. Qd2 Ng4 10. Bxg4 Bxg4 11. f4 Nxd4 12. Bxd4 e5 13. Be3 exf4 14. Rxf4 Be6 15. Rf2 Qa5 16. Bd4 Be5 17. Nd5 Qxd2 18. Rxd2 Bxd5 19. exd5 Rfe8 20. Rf1 Rac8 21. c3 Bxd4+ 22. Rxd4 Re2 23. Rf2 Rce8 24. Rd2 Re1+ 25. Rf1 R8e2 26. Rxe2 Rxe2 27. Rf2 Re1+ 28. Rf1 Re2 29. Rf2 Re1+ 30. Rf1 Re5 31. c4 Kf8 32. Kf2 b6 1/2-1/2

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.21"]
[Round "9"]
[White "Van Helvoort, Rob AM"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2180"]
[BlackElo "1870"]
[PlyCount "132"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. Na3 Nc6 5. Nf3 Nf6 6. d4 Bg4 7. Be2 cxd4 8. cxd4 e6 9. Nb5 0-0-0 10. Nc3 Qd7 11. Be3 Bxf3 12. Bxf3 Nxd4 13. Bxd4 Qxd4 14. Qc2 Qd3 15. Qb3 Qd2+ 16. Kf1 Qd3+ 17. Be2 Qd4 18. Rd1 Qb4 19. Rxd8+ Kxd8 20. Qd1+ Bd6 21. Nb5 Ne4 22. Nc3 Ke7 23. Qc2 Nxc3 24. bxc3 Rc8 25. c4 b5 26. g3 bxc4 27. Kg2 c3 28. Rb1 Qd4 29. Rd1 Qe5 30. Rb1 g6 31. Rb7+ Rc7 32. Rxc7+ Bxc7 33. Kf1 Qd4 34. Ke1 Bb6 35. Bd3 Qb4 36. Qb3 a5 37. Qxb4+ axb4 38. h3 Kd6 39. Ke2 Kd5 40. Bc2 Kd4 41. Bb3 Bc7 42. Bc2 f5 43. Bb3 f4 44. gxf4 Bxf4 45. Bc2 Bd6 46. Kf3 Ke5 47. Bd3 Kf6 48. Ke2 Kg5 49. Bc4 e5 50. Bg8 h6 51. Bf7 Bc5 52. Bb3 Kh4 53. Bc2 Kxh3 54. Bxg6 Kg2 55. f3 Kg3 56. Bh5 Kf4 57. Bg6 Kg5 58. Be4 h5 59. Bd5 Kf4 60. Kf1 Kg3 61. Ke2 h4 62. f4 exf4 63. Be4 Be3 64. Kd3 h3 65. Bd5 Bc5 66. Ke2 f3+ 0-1

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.20"]
[Round "8"]
[White "Van der Zon, Stef"]
[Black "Van der Marel, Bert"]
[Result "1-0"]
[ECO "A31"]
[WhiteElo "1870"]
[BlackElo "2176"]
[PlyCount "53"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 g6 4. Nc3 Bg7 5. g3 cxd4 6. Nxd4 d5 7. cxd5 Nxd5 8. Ndb5 Nxc3 9. Qxd8+ Kxd8 10. Nxc3 Nc6 11. Bg2 f6 12. 0-0 Ke8 13. Nb5 Kf7 14. Bd5+ e6 15. Bg2 Rd8 16. Be3 f5 17. Rad1 Be5 18. Bxc6 Rxd1 19. Rxd1 bxc6 20. Nxa7 Ke8 21. Nxc6 Bf6 22. Bd4 Bxd4 23. Rxd4 Bb7 24. Nb4 e5 25. Rc4 Rd8 26. f3 e4 27. Rc7 1-0

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.19"]
[Round "7"]
[White "Roorda, Thijs"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "E63"]
[WhiteElo "2088"]
[BlackElo "1870"]
[PlyCount "40"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 0-0 5. Bg2 d6 6. Nf3 Nc6 7. 0-0 a6 8. b3 Rb8 9. a4 Nb4 10. Ba3 c5 11. Bxb4 cxb4 12. Nb1 b5 13. Nbd2 bxc4 14. Nxc4 Ne4 15. Rc1 Nc3 16. Qd2 Be6 17. Ng5 Bxc4 18. bxc4 Nxa4 19. Ra1 Qd7 20. e3 h6 1/2-1/2

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.18"]
[Round "6"]
[White "Van der Zon, Stef"]
[Black "Van den Berg, Dick"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "1870"]
[BlackElo "2028"]
[PlyCount "51"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 Bd7 12. Qd3 dxc3 13. Nxc3 a6 14. Rb1 Rc8 15. Bd2 Nf5 16. Rg1 Nxe5 17. fxe5 Qxe5+ 18. Ne2 Bb5 19. Rxb5 axb5 20. Qxb5+ Ke7 21. Qb4+ Qd6 22. g4 Rc4 23. Qxb7+ Rc7 24. Qb4 Rc4 25. gxf5 Rxb4 26. Bxb4 1-0

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.16"]
[Round "5"]
[White "Thakoerdien, Jerrel"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "E66"]
[WhiteElo "2083"]
[BlackElo "1870"]
[PlyCount "53"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. g3 d6 6. Bg2 Nc6 7. d5 Na5 8. Nd2 c5 9. 0-0 a6 10. Qc2 Rb8 11. b3 b5 12. Bb2 Bd7 13. Rab1 Qc8 14. Rfe1 Bh3 15. e4 Nh5 16. Nd1 Bxb2 17. Rxb2 Bxg2 18. Kxg2 bxc4 19. bxc4 Rxb2 20. Nxb2 Qg4 21. Nd3 f5 22. exf5 gxf5 23. Rxe7 Qg5 24. Ra7 f4 25. Nxc5 Rf5 26. Ra8+ Kf7 27. Rf8+ 1-0

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.15"]
[Round "4"]
[White "Van der Zon, Stef"]
[Black "Partenheimer, Axel"]
[Result "1/2-1/2"]
[ECO "B85"]
[WhiteElo "1870"]
[BlackElo "2157"]
[PlyCount "66"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. 0-0 Nf6 8. Be3 Be7 9. f4 d6 10. Kh1 0-0 11. Bf3 Re8 12. g4 Nxd4 13. Bxd4 e5 14. Be3 exf4 15. Bxf4 Be6 16. g5 Nd7 17. Bg2 Rac8 18. a4 Bf8 19. Qh5 g6 20. Qh4 Bg7 21. Ra3 Ne5 22. Nd5 Bxd5 23. exd5 Qe7 24. Rh3 h5 25. gxh6 Qxh4 26. Rxh4 Bh8 27. h7+ Kf8 28. c3 f5 29. Bh6+ Kf7 30. Rb4 Rc7 31. h4 Bf6 32. h5 Rh8 33. hxg6+ Nxg6 1/2-1/2

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.13"]
[Round "2"]
[White "Tinga, Tjerk"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2026"]
[BlackElo "1870"]
[PlyCount "52"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 d5 4. exd5 Qxd5 5. d4 Bg4 6. Be2 cxd4 7. cxd4 e6 8. Nc3 Qd8 9. 0-0 Nf6 10. Be3 Be7 11. Qb3 Qc7 12. h3 Bh5 13. d5 exd5 14. Nxd5 Nxd5 15. Qxd5 Bg6 16. Rfd1 0-0 17. Qd7 Qb8 18. Nd4 Bf6 19. Rd2 Rd8 20. Qg4 Nxd4 21. Bxd4 h5 22. Qf3 Rxd4 23. Rxd4 Bxd4 24. Rd1 Qe5 25. Qxb7 Be4 26. Qb4 Qg3 0-1

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.12"]
[Round "1"]
[White "Van der Zon, Stef"]
[Black "Blom, Vincent"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "1870"]
[BlackElo "2167"]
[PlyCount "71"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 Qc7 8. Qf3 h6 9. Bh4 g5 10. fxg5 hxg5 11. Bxg5 Qc5 12. Nf5 e6 13. Bxf6 Nxf6 14. Nxd6+ Bxd6 15. Qxf6 Bg3+ 16. Kd2 Be5 17. Qf3 b5 18. a3 Bb7 19. Bd3 0-0-0 20. Qxf7 Bxc3+ 21. bxc3 Qg5+ 22. Ke2 Rhf8 23. Qxe6+ Kb8 24. Qh3 Qe7 25. Qe3 Rg8 26. g3 Qg7 27. a4 Qxc3 28. axb5 Rge8 29. bxa6 Bxe4 30. a7+ Kc7 31. Qf4+ Rd6 32. a8Q Bxa8+ 33. Kf2 Qc5+ 34. Kf1 Bxh1 35. Qf7+ Kd8 36. Ra6 0-1

[Event "Bussum op 30th"]
[Site "Bussum"]
[Date "2013.05.20"]
[Round "6"]
[White "Van der Zon, Stef"]
[Black "Houben, Jaap"]
[Result "0-1"]
[ECO "B75"]
[WhiteElo "1837"]
[BlackElo "2265"]
[PlyCount "41"]
[EventDate "2013.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 a6 8. Qd2 Nbd7 9. 0-0-0 b5 10. g4 Bb7 11. h4 h5 12. g5 Nh7 13. Kb1 Rc8 14. Bh3 0-0 15. Nd5 Rc4 16. Bxd7 Bxd5 17. Bxb5 axb5 18. exd5 Qa8 19. b3 Rc5 20. Nc6 Rxc6 21. dxc6 0-1

[Event "Bussum op 30th"]
[Site "Bussum"]
[Date "2013.05.19"]
[Round "4"]
[White "Beerdsen, Thomas"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B79"]
[WhiteElo "2090"]
[BlackElo "1837"]
[PlyCount "110"]
[EventDate "2013.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[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 Qa5 11. Bb3 Rfc8 12. Kb1 Ne5 13. Bg5 Nc4 14. Bxc4 Rxc4 15. Nb3 Qd8 16. e5 Ne8 17. Nd5 f6 18. Na5 Rxc2 19. Kxc2 Bf5+ 20. Kb3 fxg5 21. Rhe1 Rc8 22. Rc1 Be6 23. Ka3 Kh8 24. Rxc8 Qxc8 25. Rc1 Qd7 26. Nc3 Bxe5 27. Re1 Qc7 28. Nb3 Qc6 29. Re4 Nf6 30. Rb4 a5 31. Ra4 d5 32. Nxa5 Qc5+ 33. b4 Qxc3+ 34. Qxc3 Bxc3 35. Nxb7 d4 36. Nc5 Bc4 37. Ra8+ Kg7 38. Rd8 Nd5 39. Ne6+ Kf6 40. Nxd4 Bxd4 41. b5 Bc5+ 42. Kb2 Bb6 43. Rh8 Kg7 44. Rb8 Bxb5 45. Kb3 Bf1 46. g3 Be2 47. f4 gxf4 48. gxf4 Bc7 49. Rb7 Bxf4 50. Rd7 Bc4+ 51. Kb2 Bxh2 52. a4 Be5+ 53. Ka3 Bd6+ 54. Kb2 Nb6 55. Ra7 Nxa4+ 0-1

[Event "Bussum op 30th"]
[Site "Bussum"]
[Date "2013.05.19"]
[Round "3"]
[White "Van der Zon, Stef"]
[Black "Van 't Hof, Eric"]
[Result "1/2-1/2"]
[ECO "C91"]
[WhiteElo "1837"]
[BlackElo "2152"]
[PlyCount "73"]
[EventDate "2013.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. d4 Bg4 10. d5 Na5 11. Nbd2 Nxb3 12. axb3 Nd7 13. h3 Bh5 14. g4 Bg6 15. Nf1 Nb6 16. Ng3 c6 17. dxc6 Qc7 18. h4 f6 19. h5 Be8 20. Nh4 Bxc6 21. Nhf5 Rfd8 22. g5 fxg5 23. Qg4 Bf8 24. Bxg5 Rd7 25. Re3 d5 26. Rd1 Re8 27. Red3 dxe4 28. Rxd7 Bxd7 29. Bf6 Be6 30. Nxe4 Bxf5 31. Qxf5 Qf7 32. Qg4 Kh8 33. Bh4 h6 34. Qg6 Qxg6+ 35. hxg6 Nc8 36. Rd7 Kg8 37. Kf1 1/2-1/2

[Event "Bussum op 30th"]
[Site "Bussum"]
[Date "2013.05.19"]
[Round "5"]
[White "Van der Zon, Stef"]
[Black "Witt, Rob"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "1837"]
[BlackElo "2240"]
[PlyCount "55"]
[EventDate "2013.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Qb6 8. Na4 Qa5+ 9. c3 cxd4 10. b4 Nxb4 11. cxb4 Bxb4+ 12. Bd2 Bxd2+ 13. Nxd2 0-0 14. Bd3 b5 15. Nb2 Nb6 16. 0-0 Nc4 17. Nb3 Qa3 18. Qh5 g6 19. Qh6 Nxb2 20. Rf3 Nxd3 21. Rh3 Re8 22. Qxh7+ Kf8 23. Qh4 Nxf4 24. Qxf4 Ke7 25. Qf6+ Kd7 26. Nxd4 Qa6 27. Rh7 Rf8 28. Rf1 1-0

[Event "Leiden LCT op-A 6th"]
[Site "Leiden"]
[Date "2012.07.06"]
[Round "1"]
[White "Sanders, Isaac B"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B79"]
[WhiteElo "2100"]
[BlackElo "1713"]
[PlyCount "75"]
[EventDate "2012.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[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 Qa5 11. Kb1 Rfc8 12. Bb3 Ne5 13. h4 Nc4 14. Bxc4 Rxc4 15. Nb3 Qc7 16. h5 Rxc3 17. bxc3 Nxh5 18. Bd4 Nf6 19. g4 e5 20. Be3 Bxg4 21. fxg4 Nxe4 22. Qh2 Nxc3+ 23. Kc1 Nxa2+ 24. Kb2 Nc3 25. Qxh7+ Kf8 26. Bh6 Nxd1+ 27. Rxd1 Bxh6 28. Qxh6+ Ke7 29. Qh4+ Ke6 30. Rf1 Qe7 31. g5 Qc7 32. Rf6+ Kd5 33. c4+ Kc6 34. Qe4+ Kb6 35. c5+ Kb5 36. Qd3+ Kb4 37. Qe4+ Kb5 38. cxd6 1-0

[Event "Delft Prinsenstad op-B"]
[Site "Delft"]
[Date "2011.04.24"]
[Round "5"]
[White "Haver, Daan"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "B79"]
[WhiteElo "1847"]
[BlackElo "1869"]
[PlyCount "46"]
[EventDate "2011.04.22"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[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. f3 Nc6 9. Qd2 Bd7 10. 0-0-0 Qa5 11. Nb3 Qc7 12. Bh6 Ne5 13. Be2 Bxh6 14. Qxh6 Rfc8 15. Rd4 Bb5 16. f4 Nc4 17. Bxc4 Bxc4 18. Nd2 Qb6 19. Rxc4 Rxc4 20. Nxc4 Qb4 21. Nd2 Rb8 22. Nb3 Z0 23. e5 Ne4 1/2-1/2

[Event "Leiden LCT op-B 4th"]
[Site "Leiden"]
[Date "2010.07.16"]
[Round "7"]
[White "Van der Zon, Stef"]
[Black "Bekker, Michael"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "1691"]
[BlackElo "1651"]
[PlyCount "85"]
[EventDate "2010.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 d6 6. Nc3 Nf6 7. Bd3 b6 8. 0-0 Bb7 9. Re1 Qc7 10. Qe2 Nbd7 11. f4 Rc8 12. Nb3 Nc5 13. Nxc5 Qxc5+ 14. Be3 Qc7 15. Bd4 e5 16. Be3 Be7 17. Nd5 Nxd5 18. cxd5 b5 19. Rec1 Qd7 20. Rxc8+ Bxc8 21. Rc1 0-0 22. Qc2 exf4 23. Bxf4 Qg4 24. Be3 f5 25. exf5 Bxf5 26. Rf1 Bxd3 27. Rxf8+ Bxf8 28. Qxd3 Qb4 29. Qd2 Qxd2 30. Bxd2 Kf7 31. Kf2 Kf6 32. Bc3+ Kf5 33. Kf3 g5 34. g4+ Kg6 35. Ke4 Be7 36. b3 Bd8 37. h3 a5 38. Bd4 b4 39. Kd3 Bc7 40. Kc4 Bd8 41. Kb5 Bf6 42. Bb6 Bc3 43. Kc6 1-0

[Event "Leiden LCT op-B 4th"]
[Site "Leiden"]
[Date "2010.07.15"]
[Round "6"]
[White "Van der Laan, Hugo"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "1712"]
[BlackElo "1691"]
[PlyCount "44"]
[EventDate "2010.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[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 d5 10. Nxc6 bxc6 11. e5 Nd7 12. f4 Qa5 13. Kb1 Rb8 14. Qd4 c5 15. Qd2 d4 16. Nd5 Qa3 17. Nxe7+ Kh8 18. Qc1 Qxe3 19. Qxe3 dxe3 20. Nxc8 Nxe5 21. Nxa7 Ng4 22. Re1 Rxb2+ 0-1

[Event "Leiden Noteboom Memorial 70th"]
[Site "Leiden"]
[Date "2010.02.14"]
[Round "5"]
[White "Van der Zon, Stef"]
[Black "Otten, Martijn"]
[Result "0-1"]
[ECO "C16"]
[WhiteElo "1691"]
[BlackElo "1874"]
[PlyCount "64"]
[EventDate "2010.02.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 134 Extra"]
[Source "ChessBase"]
[SourceDate "2010.03.03"]
[SourceVersion "1"]
[SourceVersionDate "2010.03.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. a3 Bf8 6. f4 Nh6 7. Nf3 Nc6 8. Bd3 Bb7 9. 0-0 Qd7 10. Be3 Be7 11. Ne2 0-0-0 12. c3 f6 13. a4 Nf7 14. b4 fxe5 15. fxe5 g5 16. Nd2 Nfxe5 17. dxe5 Nxe5 18. Bc2 Ng4 19. Bd4 Rhf8 20. Ng3 h5 21. Qe2 c5 22. bxc5 bxc5 23. Nxh5 cxd4 24. Qxg4 dxc3 25. Nb3 d4 26. Rxf8 Bxf8 27. Re1 d3 28. Qc4+ Qc6 29. Qxc6+ Bxc6 30. Rxe6 Bd5 31. Re3 Bxb3 32. Bxb3 Bc5 0-1

[Event "Leiden Noteboom Memorial 68th"]
[Site "Leiden"]
[Date "2008.02.01"]
[Round "1"]
[White "Pel, Bonno"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2299"]
[BlackElo "1691"]
[PlyCount "39"]
[EventDate "2008.02.01"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 122 Extra"]
[Source "ChessBase"]
[SourceDate "2008.03.04"]
[SourceVersion "1"]
[SourceVersionDate "2008.03.04"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 dxe4 3. Nxe4 Bf5 4. Qf3 Bxe4 5. Qxe4 Qc8 6. Bc4 Nf6 7. Qe2 e6 8. Nf3 Be7 9. 0-0 Nd5 10. Bxd5 exd5 11. Qe5 Qd7 12. Qxg7 Rf8 13. d4 Nc6 14. Bf4 0-0-0 15. Qxh7 Rh8 16. Qd3 Rdg8 17. Rfe1 Bd6 18. Bxd6 cxd6 19. Re3 Qh3 20. Re8+ 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2005.08.13"]
[Round "9"]
[White "Zhang, Tony"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2101"]
[BlackElo "1690"]
[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. c3 Nf6 4. Be2 Nc6 5. d4 cxd4 6. cxd4 g6 7. Nc3 Bg7 8. 0-0 0-0 9. d5 Nb8 10. Be3 Nbd7 11. Nd4 a6 12. f4 Nc5 13. Bf3 Qc7 14. b4 Ncd7 15. Rc1 Qd8 16. Na4 b5 17. Nc6 Qe8 18. Nc3 Nb8 19. Na5 Nfd7 20. Re1 Qd8 21. Nc6 Qe8 22. Bf2 Bb7 23. Na5 Bc8 24. e5 dxe5 25. d6 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2005.08.12"]
[Round "8"]
[White "Van der Zon, Stef"]
[Black "Kleinschmidt, Rene"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "1690"]
[BlackElo "1458"]
[PlyCount "87"]
[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. Nc3 Bg7 6. Be3 Nf6 7. Be2 0-0 8. 0-0 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Nxc6 bxc6 12. c3 Qxd1 13. Rfxd1 Be6 14. Bd4 Rfd8 15. Bxg7 Kxg7 16. b3 a5 17. Bf3 Rxd1+ 18. Rxd1 Ra6 19. Rd4 c5 20. Ra4 Bd7 21. Rc4 a4 22. bxa4 Rxa4 23. Rxa4 Bxa4 24. Kf1 f5 25. Ke2 e5 26. Bd5 Kf6 27. f3 h5 28. Kd3 Bb5+ 29. Kc2 Bf1 30. c4 Bxg2 31. a4 e4 32. fxe4 fxe4 33. a5 Ke5 34. a6 Kd4 35. a7 Ke3 36. a8Q g5 37. Qa3+ Ke2 38. Qxc5 g4 39. Qe7 Ke3 40. Qg5+ Kf2 41. Qxh5 Bf3 42. Qh4+ Ke2 43. c5 e3 44. Bc4# 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2005.08.12"]
[Round "7"]
[White "Van der Zon, Stef"]
[Black "Zelitchenko, Marianne"]
[Result "1-0"]
[ECO "B73"]
[WhiteElo "1690"]
[BlackElo "1587"]
[PlyCount "91"]
[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. Nc3 Bg7 6. Be3 Nf6 7. Be2 d6 8. 0-0 0-0 9. Qd2 Bd7 10. Rfd1 Rc8 11. Kh1 Ng4 12. Bxg4 Bxg4 13. f3 Bd7 14. Nce2 Ne5 15. b3 Nc6 16. Bh6 Nxd4 17. Bxg7 Nxb3 18. cxb3 Kxg7 19. Qd4+ Kg8 20. Qxa7 Qc7 21. Rdc1 Bc6 22. Qe3 Qd7 23. Nd4 e5 24. Ne2 Bb5 25. Nc3 Bc6 26. Rd1 Qe6 27. Rd2 Rfd8 28. Rad1 Rc7 29. Qb6 Qe7 30. h3 f5 31. exf5 gxf5 32. Nd5 Bxd5 33. Rxd5 Rc6 34. Rxe5 Qxe5 35. Qxd8+ Kf7 36. Qd7+ Kg6 37. Qxb7 Qc3 38. Qe7 d5 39. Qe8+ Kh6 40. Qf8+ Kg6 41. Qg8+ Kh6 42. Qxd5 f4 43. Qd4 Qc2 44. Qxf4+ Kg7 45. Rd7+ Kg8 46. Qf7+ 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2005.08.11"]
[Round "6"]
[White "Hoolt, Rebekka"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B70"]
[WhiteElo "1090"]
[BlackElo "1690"]
[PlyCount "58"]
[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. f3 Bg7 7. Bb5+ Bd7 8. Bd2 0-0 9. Nde2 Qb6 10. Bxd7 Nbxd7 11. Qc1 Rfc8 12. Nf4 e6 13. Be3 Qa6 14. Qd2 Ne5 15. 0-0-0 Nc4 16. Qd3 Rc6 17. Bf2 Rac8 18. Nfe2 Nd7 19. Nd4 Nc5 20. Qe2 Bxd4 21. Rxd4 Na4 22. Nxa4 Qxa4 23. b3 Qa3+ 24. Kd1 Nb2+ 25. Ke1 Rxc2 26. Rd2 Rc1+ 27. Rd1 Qb4+ 28. Kf1 Rxd1+ 29. Qxd1 Nxd1 0-1

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2005.08.10"]
[Round "4"]
[White "Snijders, Jasper"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "1614"]
[BlackElo "1690"]
[PlyCount "63"]
[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. c3 Nf6 4. Qc2 Nc6 5. d4 cxd4 6. cxd4 e6 7. Nc3 Be7 8. Bb5 Bd7 9. 0-0 0-0 10. Be3 Rc8 11. a3 a6 12. Bd3 b5 13. e5 dxe5 14. dxe5 Nd5 15. Bxh7+ Kh8 16. Be4 Nxe3 17. fxe3 Qc7 18. Rad1 Be8 19. Bxc6 Bxc6 20. Rd4 g6 21. Ne4 Qb7 22. Qd3 Bd5 23. Nd6 Bxd6 24. exd6 Bc4 25. Rh4+ Kg7 26. Qd4+ f6 27. Ng5 Bxf1 28. Rh7+ Kg8 29. Rxb7 Rc1 30. Rc7 Bc4+ 31. Kf2 fxg5+ 32. Kg3 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2005.08.10"]
[Round "5"]
[White "Van der Zon, Stef"]
[Black "Hooghwerff, Ruben"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1690"]
[BlackElo "1551"]
[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 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. Nxe5 d5 5. Qf3 Nf6 6. Bb3 c6 7. 0-0 Be7 8. d4 0-0 9. Nc3 Nbd7 10. Bf4 Nxe5 11. Bxe5 Ng4 12. Bf4 Bd6 13. Ne2 Re8 14. h3 Nf6 15. Bxd6 Qxd6 16. Ng3 b6 17. Rfe1 Bd7 18. c3 c5 19. dxc5 bxc5 20. Red1 Bc6 21. Nf5 Qc7 22. Qg3 Qxg3 23. Nxg3 Rad8 24. Rd2 Ne4 25. Nxe4 Rxe4 26. Rad1 c4 27. Bc2 Re7 28. Bf5 1/2-1/2

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2005.08.09"]
[Round "2"]
[White "Laarhoven, Thijs"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "B21"]
[WhiteElo "2034"]
[BlackElo "1690"]
[PlyCount "66"]
[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. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 Nc6 6. Bc4 Na5 7. Bb5+ Bd7 8. Qa4 Nc6 9. Be3 a6 10. Nd5 axb5 11. Qxa8 Qxa8 12. Nc7+ Kd8 13. Nxa8 h6 14. 0-0 Nf6 15. Rfe1 g5 16. Bb6+ Kc8 17. Nc7 Kb8 18. Re3 Nb4 19. Rc1 Bg7 20. a3 Na6 21. b4 Nxc7 22. Rxc7 Re8 23. Rc2 Bc6 24. Nd2 Nd7 25. Ba5 Rc8 26. Rf3 Bf6 27. Rf5 b6 28. a4 bxa5 29. axb5 Ba8 30. Rxc8+ Kxc8 31. bxa5 Ne5 32. Nc4 Nd7 33. Nd2 Nc5 1/2-1/2

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2005.08.08"]
[Round "1"]
[White "Van der Zon, Stef"]
[Black "De Weird, Evy"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "1690"]
[BlackElo "1342"]
[PlyCount "73"]
[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 e6 2. d4 d5 3. Nc3 Bb4 4. Bd2 c5 5. a3 Bxc3 6. Bxc3 c4 7. e5 Ne7 8. f4 Nf5 9. Qg4 h5 10. Qh3 Qh4+ 11. Qxh4 Nxh4 12. Kf2 Nd7 13. Be2 f6 14. Nf3 Nf5 15. Rag1 fxe5 16. fxe5 Nb6 17. b3 cxb3 18. cxb3 Bd7 19. g3 Rf8 20. Bb4 Ne7 21. Kg2 Rc8 22. Rc1 Rg8 23. Bxe7 Kxe7 24. Ng5 Rh8 25. Rhf1 Rxc1 26. Rxc1 g6 27. Bd3 Na8 28. Rf1 Nc7 29. Rf7+ Kd8 30. Rf6 Rg8 31. Bxg6 Be8 32. Bxe8 Nxe8 33. Nxe6+ Ke7 34. Rh6 h4 35. Nf4 hxg3 36. hxg3 Nc7 37. Rd6 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Bloemsma, Tom"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "A16"]
[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. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 Bf5 5. Nxd5 Qxd5 6. d3 Qd7 7. Qb3 Nc6 8. Bf4 e6 9. a3 Bd6 10. Bxd6 cxd6 11. g3 0-0 12. Bg2 Rfc8 13. 0-0 h6 14. Rfc1 Rc7 15. Rc3 Rac8 16. Rac1 Bg4 17. e3 Bf5 18. Qa4 Qe7 19. Nh4 Bh7 20. Nf3 Bg6 21. Nh4 Bh7 22. Nf3 Bg6 23. Nd4 Nxd4 24. Qxd4 b6 25. Be4 Bxe4 26. Qxe4 Rc5 27. Kg2 1/2-1/2

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Langerak, Wouter"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B93"]
[PlyCount "33"]
[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 a6 6. f4 b5 7. e5 dxe5 8. fxe5 Nd5 9. Ndxb5 e6 10. Nxd5 exd5 11. Qxd5 Qxd5 12. Nc7+ Kd8 13. Nxd5 Bc5 14. Bg5+ Kd7 15. 0-0-0 Kc6 16. Be2 Bb7 17. Bf3 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Van Dooren, Dirk"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "B76"]
[PlyCount "58"]
[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 Nxd4 10. Bxd4 Be6 11. g4 Qa5 12. Kb1 Rfc8 13. a3 a6 14. h4 b5 15. h5 b4 16. Na2 Rab8 17. Nxb4 Qa4 18. Bxa6 Rxb4 19. Bxc8 Qxa3 20. Bxe6 Nxe4 21. Bxf7+ Kxf7 22. hxg6+ Kxg6 23. Rh6+ Bxh6 24. Qe1 Ng5 25. f4 Bg7 26. f5+ Kf7 27. Bxg7 Kxg7 28. Qxe7+ Nf7 29. b3 Rxb3+ 1/2-1/2

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Van Nies, Pauline"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B71"]
[WhiteElo "2045"]
[PlyCount "27"]
[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. f4 Nc6 7. Be3 Bd7 8. Be2 e6 9. 0-0 Be7 10. f5 exf5 11. exf5 Nxd4 12. Bxd4 Bxf5 13. g4 Be6 14. g5 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Van de Krol, Sernin"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "B50"]
[PlyCount "130"]
[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. Bc4 e6 4. Nc3 a6 5. a4 Nf6 6. d3 b6 7. Bg5 Be7 8. Bxf6 Bxf6 9. Bb3 Bb7 10. 0-0 Nd7 11. Re1 0-0 12. Rb1 Qc7 13. Qd2 Rfe8 14. Bc4 Rad8 15. b3 Bxc3 16. Qxc3 d5 17. exd5 exd5 18. Bxd5 Bxd5 19. d4 Qf4 20. dxc5 Nxc5 21. Qd4 Be4 22. Qc3 Qg4 23. h3 Qg6 24. Nh4 Qd6 25. f3 Bb7 26. Nf5 Qf6 27. Qxf6 gxf6 28. Nh6+ Kg7 29. Nf5+ Kf8 30. Rxe8+ Kxe8 31. Re1+ Kf8 32. Kf2 Rd2+ 33. Re2 Rd5 34. g4 Ne6 35. c4 Rd3 36. Re3 Rd2+ 37. Re2 Rxe2+ 38. Kxe2 Nd4+ 39. Nxd4 Ke7 40. f4 Bg2 41. h4 Kd6 42. b4 Bh3 43. g5 fxg5 44. hxg5 Bd7 45. a5 bxa5 46. bxa5 Kc5 47. Kd3 Kb4 48. Nf3 Kxa5 49. Ne5 Be6 50. c5 Kb5 51. c6 Kc5 52. c7 Kd6 53. Nxf7+ Kxc7 54. Ne5 Bf5+ 55. Kc4 Kd6 56. Nf7+ Ke7 57. Nh6 Ke6 58. Kb4 Bd3 59. Kc3 Be4 60. Kd4 Bc2 61. Kc3 Bb1 62. Kd4 a5 63. Kc3 a4 64. Kb4 Bc2 65. Ka3 Bb3 1/2-1/2

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Van der Zon, Stef"]
[Black "Kleinschmidt, Rene"]
[Result "1-0"]
[ECO "B34"]
[PlyCount "99"]
[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 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 0-0 8. Qd2 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Nxc6 Qxd2+ 12. Bxd2 bxc6 13. c3 Bf5 14. Bc4 Rfd8 15. Bg5 h6 16. Be3 a5 17. 0-0 Bd3 18. Bxd3 Rxd3 19. Kf2 a4 20. Rfd1 Rad8 21. Ke2 Rxd1 22. Rxd1 Rxd1 23. Kxd1 Kf8 24. Kc2 Ke8 25. b3 axb3+ 26. axb3 Kd7 27. Kd3 Kd6 28. b4 e5 29. c4 f5 30. Bc5+ Kc7 31. b5 cxb5 32. cxb5 Bf6 33. Kc4 h5 34. Kd5 e4 35. fxe4 fxe4 36. Kxe4 Bg5 37. Ke5 Kd7 38. h3 h4 39. Ke4 Ke6 40. Bf2 Kd6 41. Kf3 Be7 42. Kg4 Bf6 43. Bxh4 Bd4 44. Kg5 Kc5 45. Kxg6 Kxb5 46. Bf6 Bf2 47. h4 Kc6 48. h5 Be3 49. g4 Kd7 50. g5 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Van der Zon, Stef"]
[Black "Ootes, Lennart"]
[Result "1/2-1/2"]
[ECO "C55"]
[PlyCount "44"]
[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. Bc4 Nf6 4. d3 d6 5. Nc3 Be7 6. Be3 Bd7 7. h3 Na5 8. Bb3 Nxb3 9. axb3 a6 10. Qd2 h6 11. d4 Bc6 12. Qd3 exd4 13. Nxd4 Qd7 14. Nxc6 Qxc6 15. 0-0 Rd8 16. Bf4 0-0 17. Rfe1 Rfe8 18. Re2 Bf8 19. Rae1 d5 20. exd5 Rxe2 21. Rxe2 Nxd5 22. Nxd5 Rxd5 1/2-1/2

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Van der Zon, Stef"]
[Black "Slikboer, Bas"]
[Result "1-0"]
[ECO "B05"]
[PlyCount "79"]
[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 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. h3 Bh5 6. Be2 Nc6 7. 0-0 e6 8. Re1 Be7 9. c3 0-0 10. Qb3 Na5 11. Qd1 Bxf3 12. Bxf3 dxe5 13. Rxe5 Nc4 14. Re1 c6 15. Nd2 Nxd2 16. Bxd2 Qc7 17. Be4 Bd6 18. Qh5 f5 19. Bc2 Rae8 20. Qf3 Bf4 21. Bxf4 Nxf4 22. Re5 Ng6 23. Re3 Rf6 24. Rae1 e5 25. dxe5 Rxe5 26. Rxe5 Nxe5 27. Qf4 Nf3+ 28. Qxf3 Qd6 29. Qe3 f4 30. Qe4 g6 31. Bb3+ Kf8 32. Qe8+ Kg7 33. Qe7+ Kh6 34. Bg8 Qd2 35. Qxh7+ Kg5 36. Qe7 Kh6 37. h4 Kh5 38. Re5+ Kg4 39. Be6+ Rf5 40. Qg5# 1-0

[Event "Hengelo U16 op"]
[Site "Hengelo"]
[Date "2004.??.??"]
[Round "?"]
[White "Van der Zon, Stef"]
[Black "Timmers, Stefan"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "63"]
[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. Bc4 Bc5 4. c3 d6 5. b4 Bb6 6. d3 Nf6 7. 0-0 0-0 8. Be3 d5 9. exd5 Nxd5 10. Bxd5 Qxd5 11. c4 Qd8 12. c5 Nxb4 13. cxb6 axb6 14. Nxe5 Re8 15. Bf4 Qd4 16. Nd2 Qxf4 17. Ndf3 Bg4 18. Nxg4 Qxg4 19. Qb3 Rad8 20. Rfe1 Nc6 21. h3 Qg6 22. Rac1 Kf8 23. Qa3+ Qd6 24. Qc3 Qxd3 25. Rxe8+ Kxe8 26. Qxg7 Qg6 27. Qc3 Rd3 28. Qh8+ Kd7 29. Rxc6 Rd1+ 30. Kh2 Qh5 31. Ne5+ Ke7 32. Qf6+ 1-0

[Event "Groningen Harmonie op-B"]
[Site "Groningen"]
[Date "2003.12.26"]
[Round "5"]
[White "Janssen, Eddie"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "41"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 Nf6 5. Nc3 e6 6. Bd3 Be7 7. Nf3 0-0 8. 0-0 a6 9. Be3 b5 10. Rc1 Bb7 11. Nd2 Ne8 12. Qg4 Nf6 13. Qh3 Nbd7 14. f4 e5 15. Ne2 Qa5 16. a3 exd4 17. Nxd4 Qd8 18. Nf5 Nc5 19. Bxc5 dxc5 20. Nxe7+ Qxe7 21. e5 1-0

[Event "Groningen Harmonie op-B"]
[Site "Groningen"]
[Date "2003.12.24"]
[Round "4"]
[White "Van der Zon, Stef"]
[Black "Stallinga, Robert Mark"]
[Result "0-1"]
[ECO "B05"]
[PlyCount "60"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. Nf3 Bg4 6. exd6 exd6 7. h3 Bh5 8. Bd3 Nc6 9. g4 Bg6 10. Bxg6 hxg6 11. d5 Qe7+ 12. Be3 Ne5 13. Nxe5 Qxe5 14. Qb3 Qe4 15. Rh2 Qxc4 16. Nc3 Qxb3 17. axb3 Be7 18. Bxb6 cxb6 19. Nb5 Kd7 20. Nxa7 Rhc8 21. f4 Rc5 22. Rd2 Bd8 23. Ra3 Bh4+ 24. Ke2 Re8+ 25. Kf3 Re1 26. g5 Rf1+ 27. Kg4 Bf2 28. b4 Rc4 29. Re2 Be1 30. Rf3 Rg1+ 0-1

[Event "Groningen Harmonie op-B"]
[Site "Groningen"]
[Date "2003.12.23"]
[Round "3"]
[White "Van der Werf, Peter"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B70"]
[PlyCount "48"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. d4 cxd4 6. Nxd4 Ngf6 7. Nc3 g6 8. 0-0 Bg7 9. Be3 0-0 10. f4 Nb6 11. Qe2 Qd7 12. Rad1 Qg4 13. Nf3 Nh5 14. e5 dxe5 15. fxe5 Qc4 16. Qd2 Qe6 17. b3 Rac8 18. Nb5 Bxe5 19. Nxe5 Qxe5 20. c4 Rcd8 21. Qxd8 Qxe3+ 22. Kh1 Rxd8 23. Rxd8+ Kg7 24. Nc7 Nf6 0-1

[Event "Groningen Harmonie op-B"]
[Site "Groningen"]
[Date "2003.12.22"]
[Round "2"]
[White "Van der Zon, Stef"]
[Black "Dijkstra, Maarten"]
[Result "1-0"]
[ECO "B09"]
[PlyCount "41"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Bc4 0-0 6. e5 dxe5 7. fxe5 Nfd7 8. h4 c5 9. e6 fxe6 10. Bxe6+ Kh8 11. h5 Qb6 12. Bb3 cxd4 13. Nd5 Qd6 14. Qg4 Nc5 15. hxg6 Nxb3 16. Rxh7+ Kg8 17. Qh5 Qe6+ 18. Ne2 Rf7 19. gxf7+ Qxf7 20. Nxe7+ Kf8 21. axb3 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2003.08.09"]
[Round "9"]
[White "Van der Zon, Stef"]
[Black "Langerak, Wouter"]
[Result "0-1"]
[ECO "B87"]
[PlyCount "100"]
[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 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. f3 b5 8. Bb3 Nbd7 9. Be3 Nc5 10. 0-0 Bb7 11. Qd2 Be7 12. a3 0-0 13. Rad1 Rc8 14. Ba2 Qc7 15. Nce2 d5 16. exd5 Nxd5 17. Bxd5 Bxd5 18. Nf5 Bf6 19. Bg5 Qe5 20. Ne7+ Bxe7 21. Bxe7 Rfe8 22. Bxc5 Rxc5 23. Nc3 Rec8 24. Nxd5 Rxd5 25. Qc1 h6 26. c3 Rcd8 27. Rxd5 Qxd5 28. Re1 Qd2 29. Qxd2 Rxd2 30. Rb1 Kf8 31. Kf1 Ke7 32. h3 Kd6 33. g3 Kc5 34. h4 Kc4 35. Ke1 Kd3 36. Rd1 Rxd1+ 37. Kxd1 g5 38. a4 f5 39. axb5 axb5 40. hxg5 hxg5 41. f4 gxf4 42. gxf4 Ke4 43. Ke2 Kxf4 44. b3 Ke4 45. Kd2 f4 46. Ke2 e5 47. Kd2 f3 48. Ke1 Kd3 49. c4 bxc4 50. b4 Kd4 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2003.08.08"]
[Round "8"]
[White "Hommes, Elmar"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B93"]
[PlyCount "70"]
[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 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. Be3 0-0 8. 0-0 Nc6 9. f4 a6 10. Bf3 Qc7 11. Re1 Re8 12. Qd2 Bg4 13. Bxg4 Nxg4 14. Nd5 Qd8 15. c3 e6 16. Nxc6 bxc6 17. Bb6 Qb8 18. Bc7 Qa7+ 19. Nb6 Qxc7 20. Nxa8 Qa7+ 21. Kf1 Nxh2+ 22. Ke2 Ng4 23. Kf3 h5 24. Re2 d5 25. e5 Rxa8 26. Qd4 c5 27. Qa4 Qb7 28. Kg3 Qe7 29. Qc6 Rf8 30. Rh1 Nh6 31. Kf3 f6 32. exf6 Rxf6 33. Qc8+ Kh7 34. g3 Qd6 35. Re5 Qxe5 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2003.08.08"]
[Round "7"]
[White "Van Lanen, Tim"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B87"]
[PlyCount "60"]
[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 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. Bc4 b5 8. Bb3 Bb7 9. a3 Be7 10. Be3 Nbd7 11. Qd2 Nc5 12. g4 Nxb3 13. cxb3 0-0 14. h4 d5 15. e5 Nd7 16. f4 Bxh4+ 17. Ke2 Be7 18. b4 Nb6 19. Qc2 g6 20. Kf3 Nc4 21. Qh2 Bh4 22. g5 Re8 23. Qxh4 Kf8 24. Nb3 d4+ 25. Kg3 Nxe3 26. Qxh7 Bxh1 27. Rxh1 dxc3 28. Nc5 Ke7 29. Nb7 Nf5+ 30. Kg4 Qd3 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2003.08.07"]
[Round "6"]
[White "Van der Zon, Stef"]
[Black "Jacobs, Florian"]
[Result "0-1"]
[ECO "B90"]
[PlyCount "60"]
[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 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. Bd3 Be7 9. f3 Nbd7 10. 0-0 0-0 11. Qe2 Qc7 12. Rad1 b5 13. a3 Nb6 14. Qf2 Nc4 15. Bxc4 Bxc4 16. Rfe1 Rab8 17. Nd2 Be6 18. Nf1 Rfc8 19. Ng3 a5 20. Rd2 Qc6 21. Red1 b4 22. axb4 axb4 23. Nce2 d5 24. exd5 Nxd5 25. Kh1 b3 26. cxb3 Rxb3 27. Rc1 Qxc1+ 28. Nxc1 Rxc1+ 29. Qg1 Rxg1+ 30. Bxg1 f6 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2003.08.06"]
[Round "4"]
[White "Brouwers, Ton"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "D45"]
[PlyCount "100"]
[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 d5 2. e3 Nf6 3. c4 e6 4. Nc3 Be7 5. Nf3 0-0 6. Be2 c6 7. 0-0 Nbd7 8. Bd2 Re8 9. Rc1 Bd6 10. cxd5 exd5 11. Re1 Nb6 12. Bf1 Bf5 13. Ne2 Nc4 14. Ng3 Bxg3 15. hxg3 Nxd2 16. Qxd2 Ne4 17. Qb4 Qb6 18. Qxb6 axb6 19. a3 Rec8 20. Nh4 Nd6 21. Rc3 Bd7 22. f3 g5 23. Rb3 gxh4 24. gxh4 Nf5 25. Rxb6 Re8 26. e4 Nxh4 27. Kf2 Ng6 28. exd5 Rxe1 29. Kxe1 cxd5 30. Bb5 Re8+ 31. Kf2 Bc6 32. g3 Kg7 33. f4 Ne7 34. Bd3 h6 35. Rb3 Kf6 36. g4 Ng6 37. Kf3 Ne7 38. Rc3 Nc8 39. Rc1 Nd6 40. Rh1 Kg7 41. g5 Rh8 42. Rg1 hxg5 43. Rxg5+ Kf6 44. Re5 Rh3+ 45. Ke2 Rh2+ 46. Kf3 Rxb2 47. Kg4 Rg2+ 48. Kh5 Rg3 49. Bc2 Rxa3 50. f5 Nc4 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2003.08.06"]
[Round "5"]
[White "Van der Zon, Stef"]
[Black "Ouwendijk, Vincent"]
[Result "1-0"]
[ECO "B79"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Bc4 0-0 9. Qd2 Bd7 10. h4 Ne5 11. Bb3 Qa5 12. 0-0-0 Rfc8 13. g4 Nc4 14. Bxc4 Rxc4 15. Nb3 Qc7 16. h5 Rc8 17. hxg6 fxg6 18. e5 Ne8 19. exd6 Nxd6 20. Bd4 e5 21. Bc5 Rd4 22. Nxd4 Nc4 23. Qd3 exd4 24. Qxc4+ Kh8 25. Rxh7+ Kxh7 26. Rh1+ Bh6+ 27. g5 Qf4+ 28. Kb1 Rxc5 29. Rxh6+ Kg7 30. Qxc5 dxc3 31. Qe7+ Qf7 32. Rh7+ 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2003.08.05"]
[Round "2"]
[White "Lauwers, Jasper"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B86"]
[PlyCount "116"]
[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 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Nf3 b5 8. Bd3 Bb7 9. Bg5 Be7 10. Bxf6 Bxf6 11. Rb1 Nd7 12. Qe2 Qc7 13. Nd1 0-0 14. 0-0 Rac8 15. Ne3 Nc5 16. Ng4 Be7 17. h3 Rfd8 18. Rbd1 Qa5 19. a3 Qa4 20. Rfe1 Nxd3 21. cxd3 Rc2 22. Rd2 Rdc8 23. Red1 Bd8 24. Rxc2 Rxc2 25. Rd2 Rc1+ 26. Kh2 Ba5 27. b4 Bb6 28. Ra2 Qd1 29. Qxd1 Rxd1 30. Rd2 Ra1 31. e5 Bxf3 32. gxf3 h5 33. exd6 hxg4 34. Rc2 Rxa3 35. Rc8+ Kh7 36. Rb8 Bxf2 37. d7 Bh4 38. d8Q Ra2+ 39. Kh1 Bxd8 40. Rxd8 gxh3 41. d4 Rf2 42. d5 exd5 43. Rxd5 Rxf3 44. Rd6 Ra3 45. Rd7 f6 46. Rd6 Kg6 47. Rd5 f5 48. Kh2 Kf6 49. Rd6+ Kg5 50. Rd5 Kg4 51. Rd4+ f4 52. Kg1 g5 53. Kh1 Kf3 54. Rd5 g4 55. Rd1 g3 56. Rg1 Ra2 57. Rf1+ Rf2 58. Rg1 Rh2# 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2003.08.05"]
[Round "3"]
[White "Van der Zon, Stef"]
[Black "Gorter, Yme"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "48"]
[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. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Nc3 d6 6. Be3 Bb6 7. 0-0 Bg4 8. h3 Bh5 9. Nd5 Qd7 10. Nxb6 cxb6 11. Re1 0-0-0 12. c3 d5 13. exd5 Nxd5 14. Nxe5 Qf5 15. Qa4 Nxe5 16. Bxd5 Rxd5 17. Qxa7 Ra5 18. Qxb6 Ra6 19. Qc5+ Rc6 20. Qa7 Rd8 21. Qa8+ Kc7 22. Qa5+ Kd7 23. Kh1 Bf3 24. Bf4 Qxh3+ 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2003.08.04"]
[Round "1"]
[White "Van der Zon, Stef"]
[Black "Sloesen, Niels"]
[Result "1-0"]
[ECO "C53"]
[PlyCount "57"]
[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. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. b4 Bb6 6. d3 g6 7. Be3 Nf6 8. a4 a5 9. b5 Bxe3 10. fxe3 Ne7 11. 0-0 Bg4 12. Nbd2 0-0 13. Qc2 c6 14. bxc6 bxc6 15. Rab1 Qc7 16. d4 exd4 17. exd4 d5 18. Bd3 dxe4 19. Nxe4 Nfd5 20. Qd2 Rfe8 21. Ne5 Be6 22. Nc5 Rf8 23. Rb7 Qc8 24. Rfb1 f6 25. Nc4 Qe8 26. Nxe6 Rf7 27. Nd6 Nf5 28. Nxe8 Nfe3 29. Rxf7 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2002.08.10"]
[Round "9"]
[White "Van der Zon, Stef"]
[Black "Cornelissen, Philip"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "35"]
[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. Bc4 Nf6 4. d3 Bc5 5. 0-0 h6 6. Be3 Bb6 7. h3 0-0 8. Qd2 d5 9. exd5 Nxd5 10. Nc3 Be6 11. Nxd5 Bxd5 12. Bxd5 Qxd5 13. Rfe1 Rfe8 14. Bxb6 axb6 15. Qc3 f6 16. Qb3 Ra5 17. Qxd5+ Rxd5 18. a3 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2002.08.09"]
[Round "8"]
[White "Pijloo, Tjibaria"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "C45"]
[PlyCount "32"]
[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. Nc3 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 Nf6 6. e4 b6 7. Bc4 Bc5 8. Qd3 0-0 9. 0-0 Re8 10. Re1 c6 11. Bg5 Bxf2+ 12. Kxf2 Ng4+ 13. Kg1 Qxg5 14. Rf1 Rf8 15. Qe2 Qc5+ 16. Kh1 Ne3 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2002.08.09"]
[Round "7"]
[White "Van der Zon, Stef"]
[Black "Nabuurs, Mart"]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "98"]
[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 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Bf4 Bf5 6. Bd3 Bxd3 7. Qxd3 c6 8. Nf3 Ne7 9. 0-0 0-0 10. Ne2 Ng6 11. c3 Nxf4 12. Nxf4 Bd6 13. Qf5 g6 14. Qg4 f5 15. Qg3 Qc7 16. Ne5 Bxe5 17. dxe5 Qxe5 18. Rfe1 Qd6 19. Re6 Qc7 20. Rae1 Qg7 21. Nxg6 Nd7 22. Nxf8 Qxg3 23. hxg3 Rxf8 24. Re7 Rf7 25. b4 Nb6 26. Re8+ Kg7 27. R1e7 Nc4 28. Rxf7+ Kxf7 29. Rb8 Nd6 30. Rd8 Ke6 31. Rb8 Ke5 32. f3 a6 33. a4 d4 34. cxd4+ Kxd4 35. Rd8 Kd5 36. Kf2 c5 37. bxc5 Kxc5 38. Ke3 b5 39. axb5 axb5 40. Kd3 b4 41. Kc2 Nb5 42. Rf8 Nd4+ 43. Kb2 Kc4 44. g4 fxg4 45. fxg4 Kd5 46. Rh8 Ke5 47. Rxh7 Ne6 48. g3 Ng5 49. Kb3 Nxh7 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2002.08.08"]
[Round "6"]
[White "Mottart, Florian"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "B22"]
[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 c5 2. Nf3 d6 3. c3 Nc6 4. d4 cxd4 5. cxd4 Bg4 6. Bb5 a6 7. Ba4 Bxf3 8. Qxf3 b5 9. Bb3 e6 10. Be3 Be7 11. 0-0 Rc8 12. Nd2 Nf6 13. Rac1 Qd7 14. Rc3 0-0 15. Rfc1 Nb4 16. Nf1 d5 17. Ng3 dxe4 18. Nxe4 Nbd5 19. Nxf6+ Nxf6 20. g3 h6 21. Rc6 Rxc6 22. Qxc6 Qxc6 23. Rxc6 Ra8 24. Bd1 Nd5 25. Bf3 Ra7 26. Kf1 Nxe3+ 27. fxe3 g6 1/2-1/2

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2002.08.06"]
[Round "3"]
[White "Van der Zon, Stef"]
[Black "Ammerlaan, Linda"]
[Result "0-1"]
[ECO "B30"]
[PlyCount "66"]
[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 c5 2. Nf3 Nc6 3. Bc4 e6 4. d4 d5 5. exd5 exd5 6. Be2 Be6 7. Bf4 Qb6 8. Nbd2 Nf6 9. 0-0 Be7 10. Rb1 0-0 11. c3 cxd4 12. cxd4 Nxd4 13. Nxd4 Qxd4 14. Be3 Qb4 15. a3 Qd6 16. Nf3 Ng4 17. Bd4 Bf6 18. Rc1 Rac8 19. Qd3 Qf4 20. Bc3 Rfe8 21. Bd2 Qd6 22. b4 d4 23. Rfe1 Bd5 24. g3 Rxc1 25. Rxc1 Qe6 26. Bf4 Be4 27. Qd2 d3 28. Bd1 h6 29. Ne1 Ne5 30. Bxe5 Qxe5 31. Nxd3 Qd4 32. Be2 Bc6 33. Rd1 Qe4 0-1

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2002.08.06"]
[Round "2"]
[White "Van der Zon, Stef"]
[Black "Perizonius, Rutger"]
[Result "1-0"]
[ECO "C55"]
[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 e5 2. Nf3 d6 3. Nc3 Nf6 4. Bc4 Be7 5. d3 0-0 6. Be3 Nc6 7. Qd2 Ng4 8. Nd5 h6 9. h3 Nxe3 10. fxe3 a6 11. 0-0 b5 12. Nxe7+ Qxe7 13. Bd5 Bb7 14. Qc3 Qe8 15. Rae1 b4 16. Qc4 a5 17. g4 Rb8 18. h4 Qd7 19. g5 Ne7 20. gxh6 c6 21. Bxf7+ Rxf7 22. h7+ Kxh7 23. Ng5+ Kh6 24. Qxf7 Qe8 25. Qxe8 Rxe8 26. Nf7+ Kh5 27. Nxd6 Rb8 1-0

[Event "Hengelo U14 op"]
[Site "Hengelo"]
[Date "2002.08.05"]
[Round "1"]
[White "Rothuis, Vincent"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B92"]
[PlyCount "57"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 b5 7. 0-0 Bb7 8. Bf3 Nbd7 9. a4 bxa4 10. e5 Bxf3 11. Nxf3 Nxe5 12. Nxe5 dxe5 13. Qe2 e6 14. Rxa4 Qb6 15. Qxe5 Bd6 16. Qe2 0-0 17. Ra2 Qc6 18. Bg5 Be7 19. Rfa1 Qb7 20. Nd1 Rfc8 21. c3 Rd8 22. Ne3 Nd5 23. Bxe7 Qxe7 24. Nxd5 Rxd5 25. Rxa6 Rad8 26. Ra8 Qe8 27. Rxd8 Qxd8 28. c4 Rd2 29. Qxd2 1-0

[Event "NED-ch U14"]
[Site "Nijmegen"]
[Date "2002.05.04"]
[Round "9.14"]
[White "Elzinga, Roy"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B80"]
[PlyCount "115"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Bd3 b5 8. 0-0 Bb7 9. f3 Be7 10. Qe1 Nbd7 11. Qg3 Nh5 12. Qh3 Nhf6 13. Nce2 Ne5 14. Ng3 Ng6 15. Nh5 0-0 16. Ne2 Qc7 17. Bd4 e5 18. Be3 Kh8 19. Nxf6 Bxf6 20. g4 Qd7 21. Ng3 Kg8 22. Nf5 Ne7 23. g5 Nxf5 24. gxf6 Qe6 25. Qxf5 Qxf6 26. Qxf6 gxf6 27. Bh6 Rfd8 28. Kf2 Kh8 29. Rg1 Rg8 30. c3 Rg6 31. Rxg6 fxg6 32. a4 bxa4 33. Rxa4 Kg8 34. Bc4+ Kh8 35. Ra5 Rc8 36. Bd5 Bxd5 37. Rxd5 Rd8 38. c4 Kg8 39. c5 Kf7 40. Rxd6 Rc8 41. b4 a5 42. bxa5 Rxc5 43. Ra6 Rc2+ 44. Kg3 Rc8 45. Rb6 Ra8 46. Kf2 Rxa5 47. Rb7+ Kg8 48. Rg7+ Kh8 49. Rf7 Ra8 50. Rxf6 Kg8 51. Kg3 Re8 52. f4 exf4+ 53. Kxf4 Rb8 54. e5 Rb4+ 55. Ke3 Rb3+ 56. Kd4 Rb8 57. e6 Re8 58. e7 1-0

[Event "NED-ch U14"]
[Site "Nijmegen"]
[Date "2002.05.03"]
[Round "7.10"]
[White "De Ruijsscher, Mitchell"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B83"]
[PlyCount "43"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. b3 Nc6 3. Bb2 d6 4. Nf3 Nf6 5. Nc3 e6 6. Be2 Be7 7. 0-0 0-0 8. d4 cxd4 9. Nxd4 a6 10. Kh1 Qc7 11. a4 b6 12. f4 Bb7 13. Nxc6 Bxc6 14. Bf3 Rfd8 15. Qe2 Qb7 16. g4 b5 17. axb5 Bxb5 18. Nxb5 Qxb5 19. Qg2 Nd7 20. g5 f6 21. gxf6 Bxf6 22. e5 1-0

[Event "NED-ch U14"]
[Site "Nijmegen"]
[Date "2002.05.03"]
[Round "8.12"]
[White "Van der Zon, Stef"]
[Black "Gorter, Yme"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "98"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Nc3 d6 6. h3 Be6 7. Bb3 Qd7 8. Be3 Nd4 9. Nd2 d5 10. Bg5 c6 11. Nf3 Nxf3+ 12. Qxf3 0-0-0 13. 0-0-0 Be7 14. Rhe1 h6 15. Bh4 d4 16. Ne2 g5 17. Bg3 g4 18. Bxe6 Qxe6 19. hxg4 Qxa2 20. Qf5+ Nd7 21. c3 Bg5+ 22. f4 exf4 23. Bxf4 Bxf4+ 24. Qxf4 Nb6 25. Qf5+ Rd7 26. Nxd4 Na4 27. Kd2 Qxb2+ 28. Ke3 Nxc3 29. Rc1 Na2 30. Rc4 Nb4 31. Re2 Qb1 32. Rd2 Qe1+ 33. Re2 Qg3+ 34. Qf3 Qd6 35. Qf4 b5 36. Rxb4 Qxb4 37. Qf6 Rhd8 38. Qxc6+ Kb8 39. Nxb5 Rxd3+ 40. Kf4 R3d7 41. Qf6 Qc5 42. Rb2 Qg5+ 43. Qxg5 hxg5+ 44. Kxg5 Rb7 45. Rb1 Rd3 46. Kf6 a6 47. Na3 Rxa3 48. Rxb7+ Kxb7 49. Kxf7 Ra4 0-1

[Event "NED-ch U14"]
[Site "Nijmegen"]
[Date "2002.05.02"]
[Round "6.14"]
[White "Van der Zon, Stef"]
[Black "Hummel, Paul"]
[Result "1-0"]
[ECO "B00"]
[PlyCount "83"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nc6 4. Nf3 Bd7 5. Bc4 h6 6. Be3 e5 7. Qd2 exd4 8. Nxd4 Qe7 9. f3 Ne5 10. Bb3 c5 11. Nde2 c4 12. Ba4 Bxa4 13. Nxa4 b5 14. Nac3 Qb7 15. Nf4 g5 16. Nfd5 Nxd5 17. Nxd5 Bg7 18. Bd4 Rg8 19. 0-0 Nd7 20. c3 Bxd4+ 21. Qxd4 Rg6 22. Rad1 Re6 23. Rfe1 0-0-0 24. Ne3 Nc5 25. Rd2 Qa6 26. a3 Nb3 27. Qd5 Nxd2 28. Qxd2 Qb6 29. Kh1 Rde8 30. Rd1 Qc5 31. Nf5 Rd8 32. Ne3 Rf8 33. Nf5 Kd7 34. h3 Qe5 35. Kg1 Qf4 36. Qd4 Qe5 37. Qxa7+ Kd8 38. Qb8+ Kd7 39. Qxf8 Qc5+ 40. Kh1 Qe5 41. Qxf7+ Kc6 42. Nd4+ 1-0

[Event "NED-ch U14"]
[Site "Nijmegen"]
[Date "2002.05.01"]
[Round "5.13"]
[White "Delleman, Michiel"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "43"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bf4 Bf5 5. e3 Nbd7 6. Nf3 e6 7. a3 Be7 8. cxd5 cxd5 9. Bd3 Bg6 10. 0-0 0-0 11. Bxg6 hxg6 12. Rc1 Nb6 13. Nd2 Rc8 14. Qb3 Qd7 15. Nb5 Ra8 16. Rc7 Qd8 17. Rxb7 Nh5 18. Nxa7 Nxf4 19. Nc6 Ne2+ 20. Kh1 Qe8 21. Nxe7+ Kh7 22. Qxb6 1-0

[Event "NED-ch U14"]
[Site "Nijmegen"]
[Date "2002.05.01"]
[Round "4.11"]
[White "Van der Zon, Stef"]
[Black "Langerak, Wouter"]
[Result "0-1"]
[ECO "B35"]
[PlyCount "50"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nc3 Nf6 7. Bc4 0-0 8. 0-0 Ne5 9. Bb3 Neg4 10. Bg5 Qa5 11. Bd2 Qc7 12. Nf3 b6 13. h3 Ne5 14. Bf4 d6 15. Bd5 Nxf3+ 16. Qxf3 Nxd5 17. Nxd5 Qd7 18. c3 Bb7 19. Qd3 Rfe8 20. e5 Qc6 21. Rad1 dxe5 22. Bg3 f5 23. f3 a5 24. Rfe1 e6 25. Ne3 f4 0-1

[Event "NED-ch U14"]
[Site "Nijmegen"]
[Date "2002.04.30"]
[Round "3.7"]
[White "Van Blokland, Tjerk"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B92"]
[PlyCount "129"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 b5 7. Bf3 e5 8. Nf5 g6 9. Ng3 Bb7 10. Bg5 Be7 11. Bxf6 Bxf6 12. Nd5 Nd7 13. Nf1 Nb6 14. Nfe3 0-0 15. 0-0 Rc8 16. Bg4 Rb8 17. Nxb6 Qxb6 18. Nd5 Qd8 19. Qd3 Bxd5 20. Qxd5 Qc7 21. c3 Rfd8 22. Rfd1 Qc5 23. Rd3 Be7 24. Rad1 Kg7 25. Qxc5 dxc5 26. Rd5 h5 27. Bh3 b4 28. c4 f6 29. Kf1 Kf7 30. Ke2 Rxd5 31. Rxd5 Rd8 32. Kd3 Bd6 33. Kc2 Ke7 34. Kb3 Ra8 35. Ka4 Ra7 36. Bc8 Ra8 37. Bh3 Ra7 38. Rd3 Ra8 39. Rg3 Kf7 40. Rd3 Ke7 41. g3 Ra7 42. f3 Bb8 43. a3 bxa3 44. bxa3 Bd6 45. Rb3 Bc7 46. Bc8 Kd8 47. Be6 Ke7 48. Bd5 Kd6 49. Bf7 g5 50. Bxh5 Ke6 51. Bg4+ Ke7 52. Bf5 Ra8 53. Rb7 Kd6 54. Rb2 Ke7 55. h4 gxh4 56. gxh4 Rh8 57. Rh2 Rh5 58. Bg4 Rh6 59. h5 Bd6 60. Rb2 Bc7 61. Rb7 Kd6 62. Ra7 Rh7 63. Rxa6+ Ke7 64. Kb5 Kf7 65. Ra8 1-0

[Event "NED-ch U14"]
[Site "Nijmegen"]
[Date "2002.04.30"]
[Round "2.12"]
[White "Van der Zon, Stef"]
[Black "Van Dooren, Dirk"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "53"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. Nc3 d6 6. h3 0-0 7. Be3 Be6 8. Bb3 h6 9. Qd2 Kh7 10. g4 Bxb3 11. axb3 Ng8 12. Nd5 f6 13. Nh4 g6 14. Ng2 Rf7 15. 0-0-0 Bf8 16. f4 Bg7 17. h4 Nge7 18. Nxe7 exf4 19. Nxf4 Nxe7 20. Ne6 Qd7 21. Nxg7 Kxg7 22. Bxh6+ Kh7 23. g5 f5 24. h5 fxe4 25. dxe4 Nc6 26. hxg6+ Kxg6 27. Qe2 1-0

[Event "NED-ch U14"]
[Site "Nijmegen"]
[Date "2002.04.29"]
[Round "1.14"]
[White "Laarhoven, Thijs"]
[Black "Van der Zon, Stef"]
[Result "1-0"]
[ECO "B84"]
[PlyCount "93"]
[EventDate "2002.04.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 b5 7. f3 e6 8. 0-0 Bb7 9. Be3 Be7 10. Qd2 0-0 11. Rad1 Nbd7 12. Nb3 Rc8 13. a3 Nb6 14. Rfe1 Nc4 15. Bxc4 Rxc4 16. Ne2 Qc7 17. Rc1 Qd7 18. Red1 Rd8 19. Bb6 Re8 20. Na5 Rcc8 21. Nxb7 Qxb7 22. Bd4 Red8 23. Qe3 Rc6 24. Kh1 Qc7 25. Rd2 Rc8 26. Ng3 Qb7 27. e5 Nd5 28. Qe4 Bg5 29. Rcd1 Bxd2 30. Rxd2 dxe5 31. Qxe5 Nf6 32. Ne4 Ne8 33. Bc3 f6 34. Qg3 Qc7 35. f4 Rd8 36. Rxd8 Qxd8 37. h3 Qd1+ 38. Kh2 Qxc2 39. Nxf6+ Nxf6 40. Bxf6 Rc7 41. Bc3 Qf5 42. Qh4 Rf7 43. Be5 h6 44. Qd8+ Kh7 45. Qa8 g5 46. Qh8+ Kg6 47. Qg8+ 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2001.08.11"]
[Round "13"]
[White "Van der Zon, Stef"]
[Black "Burg, Twan"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "112"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. e5 Nc6 4. d4 e6 5. Be3 Nge7 6. Ne2 Nf5 7. Ng3 Nxg3 8. hxg3 g6 9. Bd3 Bg7 10. Nd2 Qb6 11. Qb3 Qxb3 12. axb3 cxd4 13. cxd4 Nb4 14. Bb1 Bd7 15. 0-0 0-0 16. f4 Rfc8 17. Nf3 Bb5 18. Re1 Rc7 19. Bd2 Bf8 20. Bc3 a6 21. g4 Rac8 22. f5 gxf5 23. gxf5 Nc6 24. fxe6 fxe6 25. Ng5 Re8 26. Re3 Bh6 27. Rg3 Rg7 28. Bd2 Nxd4 29. Kh2 Bxg5 30. Rxg5 Nxb3 31. Ra3 Nxd2 32. Rxg7+ Kxg7 33. Bc2 Rc8 34. Rg3+ Kh8 35. Bd3 Bxd3 36. Rxd3 Rc2 37. b3 b5 38. Kg1 a5 39. Re3 a4 40. bxa4 bxa4 41. Ra3 Rc4 42. Kf2 Nb1 43. Ra1 Rb4 44. Ke3 Kg7 45. Kd3 a3 46. Kc2 Rb2+ 47. Kc1 Kg6 48. Kd1 Kf5 49. Ke1 Kxe5 50. Kf1 Kf4 51. Kg1 Kg3 52. Kf1 e5 53. Kg1 Rxg2+ 54. Kf1 Nd2+ 55. Ke1 Nf3+ 56. Kf1 Rf2# 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2001.08.10"]
[Round "11"]
[White "Brandenburg, Lucia"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "67"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 5. Nc3 Qb6 6. Bb5 Bd7 7. Bxc6 Bxc6 8. 0-0 Nh6 9. h3 Nf5 10. dxc5 Bxc5 11. Re1 Bxf2+ 12. Kh2 Bxe1 13. Qxe1 0-0 14. Ng5 h6 15. Nf3 d4 16. Ne4 Bxe4 17. Qxe4 Rac8 18. b3 Qc6 19. Qxc6 Rxc6 20. Bb2 Rxc2 21. Bxd4 Nxd4 22. Nxd4 Rd2 23. Nf3 Re2 24. Kg1 Rc8 25. Kh1 Rc5 26. b4 Rc4 27. a3 Rb2 28. Ne1 Re4 29. Nf3 Ree2 30. Kg1 Rxg2+ 31. Kh1 Rg3 32. Nd4 Rxh3+ 33. Kg1 Re3 34. Kf1 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2001.08.10"]
[Round "12"]
[White "Van der Zon, Stef"]
[Black "Slikboer, Bas"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "57"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 h6 5. Nc3 Bb4 6. Bd2 Bxc3 7. Bxc3 d6 8. h3 Nh5 9. Nxe5 Nxe5 10. Qxh5 Nxc4 11. Qb5+ c6 12. Qxc4 Qg5 13. Rg1 Bxh3 14. Bd2 Qg6 15. g4 h5 16. g5 h4 17. f4 0-0 18. Rh1 Be6 19. Qd4 Qh5 20. Qf2 h3 21. f5 Bxf5 22. Qxf5 g6 23. Qxh3 Qxh3 24. Rxh3 Rae8 25. 0-0-0 Kg7 26. Bc3+ f6 27. Bxf6+ Kf7 28. Rh7+ Ke6 29. Rxb7 1-0

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2001.08.10"]
[Round "10"]
[White "Van der Zon, Stef"]
[Black "Van Eijk, Chantal"]
[Result "0-1"]
[ECO "C53"]
[PlyCount "84"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. b4 Bb6 6. d3 Bg4 7. h3 Bh5 8. Be3 Nf6 9. Nbd2 0-0 10. Qb3 Qd7 11. 0-0 Rad8 12. Bg5 Qe7 13. Rfe1 h6 14. Bh4 Rd7 15. a4 a5 16. b5 Nd8 17. d4 Re8 18. Bd5 Kh7 19. Rac1 Rg8 20. Bg3 exd4 21. cxd4 g5 22. Qd3 Bg6 23. Qb3 g4 24. hxg4 Nxg4 25. Nc4 h5 26. Nxb6 cxb6 27. Bc4 Ne6 28. Bd3 Rgd8 29. Bh4 f6 30. d5 Nc5 31. Qa3 Rg8 32. Nd2 Qe5 33. Bg3 Qd4 34. Rc3 Kg7 35. Kf1 Rh8 36. f3 Ne3+ 37. Ke2 Nxg2 38. Rc4 Qe3+ 39. Kd1 Nxe1 40. Bxe1 Nxd3 41. Bg3 Qg1+ 42. Kc2 Nb4+ 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2001.08.09"]
[Round "9"]
[White "Hendriks, Tobias"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "C09"]
[PlyCount "38"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. dxc5 Bxc5 7. Nb3 Bb6 8. Bd3 Bg4 9. h3 Bh5 10. 0-0 Nge7 11. Bf4 0-0 12. Re1 Ng6 13. Bh2 Nh4 14. a4 Qf6 15. Be2 Bg6 16. Bg3 Nxf3+ 17. Bxf3 Qxb2 18. Re2 d4 19. Bxc6 bxc6 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2001.08.09"]
[Round "8"]
[White "Van der Zon, Stef"]
[Black "Kuipers, Stefan"]
[Result "0-1"]
[ECO "C54"]
[PlyCount "46"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. b4 Bb6 6. d3 h6 7. Be3 d6 8. Nbd2 0-0 9. 0-0 Be6 10. Bb3 Qd7 11. Nc4 Bg4 12. h3 Bh5 13. a4 Bxe3 14. fxe3 Kh8 15. Qc2 Nh7 16. d4 f6 17. Nh4 Ng5 18. Nf5 Ne7 19. Qd3 Rad8 20. Ra2 Nxf5 21. Rxf5 Bg6 22. Rf1 Bxe4 23. Qd1 Bg6 0-1

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2001.08.08"]
[Round "7"]
[White "De Groote, Ewoud"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "D07"]
[PlyCount "123"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nf3 Nc6 2. d4 d5 3. c4 e6 4. Nc3 Nf6 5. g3 Bb4 6. Bg2 Bd7 7. 0-0 0-0 8. Bg5 h6 9. Bxf6 Qxf6 10. cxd5 exd5 11. Nxd5 Qd6 12. e4 Be6 13. Ne3 Rad8 14. d5 Qc5 15. Qc1 Nd4 16. Qxc5 Bxc5 17. dxe6 Nxf3+ 18. Bxf3 fxe6 19. Be2 Rd2 20. Bc4 Rxb2 21. Bxe6+ Kh8 22. Bb3 Re2 23. Rae1 Rfxf2 24. Rxe2 Rxe2 25. Rf3 Rxe3 26. Rxe3 Bxe3+ 27. Kg2 g5 28. Kf3 Bd4 29. Kg4 Kg7 30. Kf5 c5 31. a4 a6 32. Bc4 Kf8 33. Kg6 Bg7 34. g4 a5 35. Kf5 Ke7 36. e5 Bf8 37. Bd5 b6 38. Ke4 Kd7 39. Kd3 Kc7 40. Ke4 Kd7 41. Kf5 Ke7 42. Kg6 Ke8 43. Kf6 Be7+ 44. Ke6 Bf8 45. Bc4 Be7 46. Bb5+ Kf8 47. Kd7 Kf7 48. Bd3 Bf8 49. Kc6 Ke6 50. Kxb6 Kxe5 51. Kxa5 Kd4 52. Bf5 c4 53. Kb6 Bc5+ 54. Kc6 Ba7 55. Kd6 Ke3 56. Ke6 Kf3 57. Kf6 Kg2 58. Kg6 Kxh2 59. Kxh6 Be3 60. Kg6 Kg3 61. Kf6 Kf4 62. Ke6 1/2-1/2

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2001.08.08"]
[Round "5"]
[White "Middelveld, Martine"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "D12"]
[PlyCount "56"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 Bf5 5. e3 e6 6. Bd3 Bg6 7. 0-0 Bd6 8. Re1 Nbd7 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 Bxe4 12. Rxe4 Nf6 13. Re2 0-0 14. Bg5 h6 15. Bh4 Be7 16. Qc2 Qc7 17. Bg3 Bd6 18. Ne5 Nd7 19. f4 Rfe8 20. Rd1 Rad8 21. a3 b6 22. Qa4 c5 23. Red2 Nf6 24. d5 Ne4 25. Rd3 Nxg3 26. hxg3 exd5 27. Rxd5 Bxe5 28. fxe5 Qe7 1/2-1/2

[Event "Hengelo U12 op"]
[Site "Hengelo"]
[Date "2001.08.07"]
[Round "3"]
[White "Van Nies, Pauline"]
[Black "Van der Zon, Stef"]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "31"]
[EventDate "2001.08.06"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c3 Nf6 5. Bg5 h6 6. Bh4 Be7 7. Bd3 c6 8. Nf3 Bg4 9. Nbd2 Nbd7 10. Qc2 Qc7 11. a4 Bd6 12. b4 a6 13. 0-0 0-0 14. Rfe1 Rfe8 15. Rad1 Rab8 16. Rb1 1/2-1/2

