| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. G Timmerman vs K Nienhuis |
| ½-½ | 40 | 1980 | NED-ch10 corr | C60 Ruy Lopez |
| 27. G Timmerman vs Euwe |
 | ½-½ | 23 | 1980 | NED-ch10 corr | C75 Ruy Lopez, Modern Steinitz Defense |
| 28. G Timmerman vs H Holscher |
| 1-0 | 38 | 1980 | NED-ch10 corr | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 29. G Timmerman vs H Bleker |
| ½-½ | 34 | 1980 | NED-ch10 corr | B16 Caro-Kann, Bronstein-Larsen Variation |
| 30. P Seewald vs G Timmerman |
| ½-½ | 41 | 1980 | NED-ch10 corr | E77 King's Indian |
| 31. R E Booij vs G Timmerman |
| 0-1 | 20 | 1980 | NED-ch10 corr | C29 Vienna Gambit |
| 32. H J Giesbergen vs G Timmerman |
| 0-1 | 52 | 1980 | NED-ch10 corr | C26 Vienna |
| 33. K Praagman vs G Timmerman |
| 0-1 | 40 | 1980 | NED-ch10 corr | E92 King's Indian |
| 34. A Masselink vs G Timmerman |
| 0-1 | 25 | 1980 | FRG corr | E96 King's Indian, Orthodox, 7...Nbd7, Main line |
| 35. G Lodewijk vs G Timmerman |
| 0-1 | 37 | 1980 | NED-ch10 corr | D80 Grunfeld |
| 36. M V Fiorito vs G Timmerman |
| 0-1 | 43 | 1980 | NED-ch10 corr | C27 Vienna Game |
| 37. M Etmans vs G Timmerman |
| ½-½ | 30 | 1981 | NED-ch11 corr8183 | C77 Ruy Lopez |
| 38. G Timmerman vs A den Hamer |
| 0-1 | 42 | 1981 | NED-ch11 corr8183 | C81 Ruy Lopez, Open, Howell Attack |
| 39. F Vlugt vs G Timmerman |
| 1-0 | 21 | 1981 | NED-ch11 corr8183 | B63 Sicilian, Richter-Rauzer Attack |
| 40. M Wind vs G Timmerman |
| 1-0 | 17 | 1981 | NED-ch11 corr8183 | B30 Sicilian |
| 41. G Timmerman vs H de Jong |
| ½-½ | 41 | 1981 | NED-ch11 corr8183 | C81 Ruy Lopez, Open, Howell Attack |
| 42. G Timmerman vs D Langerak |
| 1-0 | 19 | 1981 | NED corr | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 43. G Timmerman vs R Weyerstrass |
| ½-½ | 44 | 1981 | NED-ch11 corr8183 | C16 French, Winawer |
| 44. G Timmerman vs H Bouwmeester |
| ½-½ | 34 | 1982 | Volmac-A corr8286 | B81 Sicilian, Scheveningen, Keres Attack |
| 45. G Timmerman vs J Van der Zwan |
| 1-0 | 48 | 1982 | NED-ch12 corr8284 | C89 Ruy Lopez, Marshall |
| 46. G Timmerman vs M Berta |
| 1-0 | 58 | 1982 | Volmac-A corr8286 | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 47. H J Giesbergen vs G Timmerman |
| 0-1 | 52 | 1982 | cr 10th NED-ch | C26 Vienna |
| 48. G Timmerman vs K B Richardson |
| 1-0 | 31 | 1982 | Volmac-A corr8286 | B09 Pirc, Austrian Attack |
| 49. G Timmerman vs V Bove Quist |
| 1-0 | 45 | 1982 | Volmac-A corr8286 | B42 Sicilian, Kan |
| 50. G Timmerman vs A J F van der Drift |
| 1-0 | 28 | 1982 | NED-ch12 corr8284 | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
Kibitzing
