[Event "Groningen op"]
[Site "Groningen"]
[Date "2007.04.15"]
[Round "5"]
[White "Vorenkamp, Jan"]
[Black "Westermann, Natalia"]
[Result "1/2-1/2"]
[ECO "C83"]
[PlyCount "62"]
[EventDate "2007.04.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Qe2 0-0 11. Nd4 Nxd4 12. cxd4 Qd7 13. f3 Ng5 14. Be3 f5 15. Nd2 f4 16. Bf2 Rae8 17. Rac1 Nf7 18. Bc2 Nh6 19. Bd3 Nf5 20. Nb3 h5 21. Nc5 Bxc5 22. Rxc5 g5 23. Rfc1 c6 24. Qc2 Ne7 25. a4 h4 26. Kh1 Kg7 27. axb5 axb5 28. Rg1 Rh8 29. Bf1 Nf5 30. h3 Ng3+ 31. Kh2 Nf5 1/2-1/2

[Event "Groningen op"]
[Site "Groningen"]
[Date "2007.04.14"]
[Round "2"]
[White "Feenstra, S."]
[Black "Vorenkamp, Jan"]
[Result "1/2-1/2"]
[ECO "B22"]
[PlyCount "34"]
[EventDate "2007.04.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. Nf3 Nc6 4. d4 d5 5. exd5 exd5 6. Bd3 Nf6 7. 0-0 Be7 8. dxc5 Bxc5 9. Re1+ Be7 10. Bg5 0-0 11. h3 Be6 12. Nbd2 d4 13. cxd4 Nxd4 14. Ne4 Nxe4 15. Bxe7 Nxf3+ 16. Qxf3 Qxe7 17. Bxe4 Rab8 1/2-1/2

[Event "Groningen op"]
[Site "Groningen"]
[Date "2007.04.14"]
[Round "3"]
[White "Vorenkamp, Jan"]
[Black "Slagter, David"]
[Result "1/2-1/2"]
[ECO "C14"]
[PlyCount "53"]
[EventDate "2007.04.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 Bxg5 7. hxg5 Qxg5 8. Nh3 Qe7 9. Qg4 g6 10. Nf4 Nb6 11. 0-0-0 Bd7 12. Kb1 Na6 13. Nb5 Nc4 14. Bxc4 dxc4 15. Nc3 c6 16. Ne4 0-0-0 17. Rh6 c3 18. Nxc3 f5 19. Qh3 Be8 20. Nce2 Nc7 21. Rh1 g5 22. Nh5 Bxh5 23. Qxh5 Rd7 24. c3 Nd5 25. Rg6 g4 26. Qh6 Re8 27. Rg5 1/2-1/2

[Event "Groningen op"]
[Site "Groningen"]
[Date "2007.04.13"]
[Round "1"]
[White "Vorenkamp, Jan"]
[Black "Woudsma, Ron"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "79"]
[EventDate "2007.04.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. c5 Nd5 5. Bc4 e6 6. Nc3 Nxc3 7. dxc3 Bxc5 8. Qg4 g6 9. Nf3 Nc6 10. Bf4 b6 11. h4 h5 12. Qg3 Bb7 13. 0-0-0 Qe7 14. Rhe1 Qf8 15. Ng5 0-0-0 16. Ne4 Be7 17. Bg5 Bxg5+ 18. hxg5 Qe7 19. b4 a5 20. a3 axb4 21. axb4 Na7 22. Qd3 Nc6 23. f4 Kb8 24. Re2 Na7 25. Ra2 Nc8 26. Ba6 Bxe4 27. Qxe4 c6 28. Qc4 Na7 29. Rd6 Nc8 30. Bxc8 Rxc8 31. Qa6 Kc7 32. Qa7+ Kd8 33. Qxb6+ Ke8 34. Ra7 Rd8 35. Rxc6 dxc6 36. Rxe7+ Kxe7 37. Qc5+ Kd7 38. Qd6+ Ke8 39. Qxc6+ Rd7 40. b5 1-0

[Event "Groningen op-B"]
[Site "Groningen"]
[Date "2004.12.22"]
[Round "2"]
[White "Vorenkamp, Jan"]
[Black "Bontjer, Bernard"]
[Result "0-1"]
[ECO "B53"]
[PlyCount "54"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. c4 Nf6 8. Nc3 g6 9. 0-0 Bg7 10. h3 0-0 11. Qd3 Rc8 12. Rd1 Qc7 13. Be3 b6 14. Rac1 Qb7 15. Nd5 e6 16. Nxf6+ Bxf6 17. Qxd6 Bxe4 18. Nd4 Bxg2 19. Qg3 Be4 20. b3 Qe7 21. Nb5 Bb2 22. Nd6 Bxc1 23. Nxc8 Rxc8 24. Rxc1 Rd8 25. Qe5 Ba8 26. Bd4 Rxd4 27. Qxd4 Qg5+ 0-1

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.21"]
[Round "7"]
[White "Zuiderweg, Edwin"]
[Black "Vorenkamp, Jan"]
[Result "1/2-1/2"]
[ECO "B76"]
[PlyCount "89"]
[EventDate "2004.10.15"]
[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. Qd2 0-0 9. 0-0-0 Nxd4 10. Bxd4 Qa5 11. Kb1 Be6 12. Nd5 Qxd2 13. Nxe7+ Kh8 14. Rxd2 Rfe8 15. Bxf6 Bxf6 16. Nd5 Bg5 17. Rd4 Bxd5 18. Rxd5 f5 19. Bb5 Re5 20. Rxe5 dxe5 21. exf5 gxf5 22. Re1 Bf6 23. Bd3 f4 24. Be4 Rb8 25. Rd1 b6 26. Rd7 Rd8 27. Rxh7+ Kg8 28. Kc1 Bg7 29. Rh5 Bf6 30. Rf5 Kg7 31. Rh5 Kf7 32. g4 fxg3 33. hxg3 Ke6 34. g4 Rg8 35. c4 Bg5+ 36. Kc2 Rg7 37. Rh7 Rxh7 38. Bxh7 Kd6 39. b4 a5 40. bxa5 bxa5 41. Kd3 Bd8 42. Ke4 Ke6 43. Bg8+ Kf6 44. Kd5 a4 45. c5 1/2-1/2

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.18"]
[Round "4"]
[White "Steijvers, Leon"]
[Black "Vorenkamp, Jan"]
[Result "1/2-1/2"]
[ECO "A39"]
[PlyCount "31"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 c5 6. d4 cxd4 7. Nxd4 Nc6 8. e4 Nxd4 9. Qxd4 d6 10. Nc3 Be6 11. Qd3 Rb8 12. Be3 Ng4 13. h3 Nxe3 14. Qxe3 Qa5 15. Rac1 a6 16. Rc2 1/2-1/2

[Event "Leeuwarden op"]
[Site "Leeuwarden"]
[Date "2004.??.??"]
[Round "4"]
[White "Vorenkamp, Jan"]
[Black "Knight, David"]
[Result "0-1"]
[ECO "C88"]
[PlyCount "54"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 a6 5. Ba4 Be7 6. Re1 b5 7. Bb3 0-0 8. a4 b4 9. d4 d6 10. h3 exd4 11. Nxd4 Bb7 12. Nf5 Ne5 13. Nd2 Qd7 14. Nc4 Rfe8 15. Nxe5 dxe5 16. Nxe7+ Qxe7 17. Bg5 h6 18. Bxf6 Qxf6 19. Qg4 Rad8 20. Rad1 Rxd1 21. Rxd1 Rd8 22. Rd7 Rxd7 23. Qxd7 Bxe4 24. Qxc7 Qg6 25. g3 Qf5 26. Qc4 Qf3 27. Kf1 Qd1# 0-1

