[Event "NED Open-ch14"]
[Site "Dieren"]
[Date "1983.08.??"]
[Round "?"]
[White "Rietra, Peter"]
[Black "Gerritzen, WJP"]
[Result "0-1"]
[ECO "A01"]
[PlyCount "98"]
[EventDate "1983.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 d6 3. e3 f5 4. Ne2 Be6 5. d4 Nd7 6. c4 Ngf6 7. Nd2 Qe7 8. Nf3 Bf7 9. Qc2 g6 10. 0-0-0 Bg7 11. g3 Ne4 12. Nc3 Nxc3 13. Bxc3 d5 14. dxe5 dxc4 15. Bxc4 Bxc4 16. bxc4 0-0 17. Qb2 b6 18. Rd5 c6 19. Rd6 Rac8 20. Rhd1 Rc7 21. e6 Nc5 22. Bxg7 Qxg7 23. Qxg7+ Kxg7 24. Ne5 Re8 25. Rxc6 Rce7 26. Rd7 Nxd7 27. exd7 Rd8 28. Rc8 Rexd7 29. Rxd8 Rxd8 30. f4 Rc8 31. a4 Kf6 32. Kc2 Ke6 33. Kc3 Rc5 34. Nd3 Rc7 35. Kb4 Rd7 36. Kc3 a6 37. h3 Rc7 38. g4 fxg4 39. hxg4 h5 40. f5+ Kf6 41. fxg6 hxg4 42. Nf2 Kf5 43. Nh1 Ke4 44. Nf2+ Kf3 45. Nxg4 Kxg4 46. Kd4 Kf5 47. g7 Rd7+ 48. Kc3 Rxg7 49. Kb4 Rc7 0-1

[Event "NED open-ch 11"]
[Site "Dieren"]
[Date "1980.07.31"]
[Round "2"]
[White "Boll, Peter Albertus"]
[Black "Gerritzen, WJP"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "116"]
[EventDate "1980.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bc4 Bg7 5. Qe2 c6 6. e5 dxe5 7. dxe5 Nd5 8. Bd2 Be6 9. f4 Nd7 10. Nf3 Nxc3 11. Bxc3 Bxc4 12. Qxc4 Nb6 13. Qe2 0-0 14. Bd2 Qd5 15. 0-0 Qc4 16. Qxc4 Nxc4 17. Rf2 Rfd8 18. Bb4 Rd7 19. b3 Ne3 20. Bc5 Nd5 21. Rd2 b6 22. Bf2 Rc7 23. g3 Bf8 24. c4 Nc3 25. Re1 b5 26. Bd4 b4 27. Bc5 a5 28. Kg2 Kg7 29. Ng5 h6 30. Ne4 Nxe4 31. Rxe4 Rb7 32. Red4 e6 33. Bxf8+ Rxf8 34. Kf3 Ra8 35. Rd8 Rba7 36. Rxa8 Rxa8 37. Rd6 a4 38. Rxc6 axb3 39. axb3 Ra3 40. Ke4 Rxb3 41. Rb6 Rb1 42. Kd4 b3 43. Kc5 b2 44. Rb3 g5 45. Kb5 gxf4 46. gxf4 Kg6 47. c5 Kf5 48. Rb4 Rc1 49. Rxb2 Kxf4 50. Rf2+ Kxe5 51. Rxf7 Rb1+ 52. Kc6 Ra1 53. Rh7 Ra6+ 54. Kb5 Ra2 55. Rxh6 Kd5 56. Kb4 Rb2+ 57. Kc3 Rb5 58. c6 Rc5+ 1/2-1/2

