[Event "Maarssen OKU op-A"]
[Site "Maarssen"]
[Date "2013.06.01"]
[Round "4"]
[White "Boer, Alef"]
[Black "Van der Horst, Klaas"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2154"]
[PlyCount "91"]
[EventDate "2013.05.31"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. e4 e6 6. Nge2 Nge7 7. 0-0 Nd4 8. Nxd4 Bxd4 9. Ne2 Bg7 10. d4 cxd4 11. Nxd4 0-0 12. Bg5 h6 13. Be3 d5 14. exd5 exd5 15. c5 Qa5 16. a3 Bd7 17. b4 Qa4 18. Qd2 Kh7 19. Bf3 Bf5 20. b5 Bxd4 21. Qxd4 Qxd4 22. Bxd4 Bd3 23. Rfe1 Nf5 24. Bf6 Bxb5 25. Bxd5 Bc6 26. Bxc6 bxc6 27. Rab1 Ng7 28. Re7 Ne6 29. Rbb7 Kg8 30. Rxa7 Nxc5 31. Rec7 Rxa7 32. Rxa7 Rc8 33. a4 Ne4 34. Be5 Re8 35. Bf4 c5 36. f3 Nc3 37. Bxh6 Rc8 38. a5 c4 39. a6 Ne2+ 40. Kf2 Nd4 41. Bf4 c3 42. Rc7 Ra8 43. Be5 Nb5 44. Rc5 f6 45. Bxf6 Rxa6 46. Rxb5 1-0

[Event "Utrecht OKU op 39th"]
[Site "Utrecht"]
[Date "2012.06.10"]
[Round "5"]
[White "Harnandan, Sergio"]
[Black "Van der Horst, Klaas"]
[Result "0-1"]
[ECO "D80"]
[WhiteElo "1982"]
[PlyCount "64"]
[EventDate "2012.06.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. f3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 Bg7 8. Be3 0-0 9. Rc1 cxd4 10. Bxd4 e5 11. Bc5 Re8 12. Bc4 Qc7 13. Qd6 Qxd6 14. Bxd6 Be6 15. Bd5 Bxd5 16. exd5 Rd8 17. Bxb8 Raxb8 18. Rd1 Rbc8 19. Ne2 Rc5 20. Kf2 Rcxd5 21. Rxd5 Rxd5 22. c4 Rd2 23. Rb1 b6 24. a4 Ra2 25. c5 bxc5 26. Rb8+ Bf8 27. Ke3 Rxa4 28. Nc3 Ra3 29. Kd3 Kg7 30. Kc4 Ra1 31. Nd5 Ra2 32. Rb7 h6 0-1

