[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.16"]
[Round "6"]
[White "De Ruijter, Klaas"]
[Black "De Freytas, Paul"]
[Result "1/2-1/2"]
[ECO "B39"]
[WhiteElo "1798"]
[BlackElo "1787"]
[PlyCount "52"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 Nc6 5. Nc3 g6 6. e4 Bg7 7. Be3 Ng4 8. Nxc6 Nxe3 9. Nxd8 Nxd1 10. Nxd1 Kxd8 11. Rc1 d6 12. c5 Be6 13. cxd6 exd6 14. b3 a6 15. Bd3 Kd7 16. 0-0 Rac8 17. Rxc8 Rxc8 18. Ne3 Rd8 19. Nc4 b5 20. Ne3 a5 21. a4 Bxb3 22. Bxb5+ Kc7 23. Rb1 Ba2 24. Rd1 Bh6 25. Nd5+ Bxd5 26. exd5 Rc8 1/2-1/2

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.16"]
[Round "5"]
[White "De Ruijter, Klaas"]
[Black "Mooijweer, Joost"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "1798"]
[BlackElo "1491"]
[PlyCount "34"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 g6 4. d5 d6 5. Nc3 Bg7 6. e4 0-0 7. Bd3 Na6 8. 0-0 Nc7 9. h3 e6 10. Bg5 Bd7 11. Qd2 e5 12. Nh2 Qc8 13. f4 Bxh3 14. fxe5 Ng4 15. gxh3 Bxe5 16. Nxg4 h5 17. Nxe5 dxe5 1-0

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.15"]
[Round "2"]
[White "Daamen, Roland"]
[Black "De Ruijter, Klaas"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "1699"]
[BlackElo "1798"]
[PlyCount "73"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Nf5 8. Bd3 h5 9. Qf3 Nc6 10. Ne2 Qc7 11. Bxf5 exf5 12. Qxd5 cxd4 13. cxd4 Be6 14. Qf3 0-0-0 15. c3 g6 16. 0-0 h4 17. Bg5 Rd7 18. Nf4 Bc4 19. Rfe1 Nd8 20. d5 Re8 21. Bf6 h3 22. d6 Qc5 23. Nxh3 Bd5 24. Qe3 Qa5 25. c4 Bc6 26. Red1 Ne6 27. Nf4 Nc5 28. Nd5 Kb8 29. Ne7 Ba4 30. Rd5 b6 31. Rb1 Rb7 32. h3 Qa6 33. Rd4 Ne4 34. Nd5 Nxf6 35. Nxf6 Qa5 36. Rd5 Qa6 37. Nxe8 1-0

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.15"]
[Round "3"]
[White "De Ruijter, Klaas"]
[Black "De Jong, Teije"]
[Result "1-0"]
[ECO "A82"]
[WhiteElo "1798"]
[PlyCount "35"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 e6 6. Bd3 Be7 7. 0-0 0-0 8. Bg5 d6 9. Qe1 Nc6 10. Qh4 g6 11. Rae1 Nd5 12. Nxd5 Bxg5 13. Nxg5 h5 14. Nf4 Nxd4 15. Bxg6 Qf6 16. Qxh5 Qg7 17. Bh7+ Kh8 18. Ng6+ 1-0

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.15"]
[Round "4"]
[White "Drenthen, Arjan"]
[Black "De Ruijter, Klaas"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "1743"]
[BlackElo "1798"]
[PlyCount "50"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. cxd5 exd5 5. Nc3 Nf6 6. Bg5 Be7 7. Qc2 h6 8. Bh4 Be6 9. e3 Nbd7 10. Bd3 0-0 11. 0-0 Rc8 12. Qb3 c5 13. Bxf6 Bxf6 14. Nxd5 cxd4 15. exd4 Bxd4 16. Nxd4 Nc5 17. Nxe6 fxe6 18. Ne7+ Qxe7 19. Qa3 Qf6 20. b4 Nxd3 21. Qxd3 Rc3 22. Qe4 Rf7 23. Rae1 Ra3 24. Re2 Ra4 25. Qc4 Re7 1/2-1/2

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.14"]
[Round "1"]
[White "De Ruijter, Klaas"]
[Black "Kalkman de Koster, Franzke"]
[Result "1-0"]
[ECO "D91"]
[WhiteElo "1798"]
[BlackElo "1462"]
[PlyCount "73"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. Nc3 g6 4. Bg5 dxc4 5. e3 Bg7 6. Bxc4 c6 7. Qb3 0-0 8. Nf3 Nbd7 9. 0-0 Qc7 10. Rac1 b5 11. Be2 Bb7 12. Nxb5 Qb6 13. Na3 Qxb3 14. axb3 Ne4 15. Bxe7 Rfe8 16. Bh4 h6 17. b4 g5 18. Bg3 Nxg3 19. hxg3 Nf6 20. b5 cxb5 21. Nxb5 Ba6 22. Nc3 Bb7 23. Nd2 Rab8 24. Ra1 Bd5 25. Nxd5 Rxb2 26. Nxf6+ Bxf6 27. Rfd1 Bxd4 28. Rab1 Rxb1 29. Rxb1 Bb6 30. Nc4 Bc5 31. Rb7 Kg7 32. Rc7 Bb6 33. Nxb6 axb6 34. Rb7 Re6 35. Bc4 Rf6 36. Kf1 g4 37. e4 1-0

[Event "corr"]
[Site "corr"]
[Date "1983.??.??"]
[Round "?"]
[White "De Ruijter, Klaas"]
[Black "Daamen, Ferry"]
[Result "1/2-1/2"]
[ECO "D88"]
[PlyCount "45"]
[EventDate "1983.??.??"]
[EventType "tourn (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 0-0 9. 0-0 Nc6 10. Be3 cxd4 11. cxd4 Bg4 12. f3 Na5 13. Bd5 Bd7 14. Rb1 a6 15. Bxb7 Ra7 16. Bd5 Bb5 17. Bg5 Qd7 18. Kh1 e6 19. Bb3 Nxb3 20. axb3 Bxe2 21. Qxe2 Bxd4 22. Rfd1 e5 23. Qd2 1/2-1/2

