| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. C van Wijgerden vs H Ree |
| 0-1 | 37 | 1977 | Dutch Championship | C41 Philidor Defense |
| 27. H Bohm vs C van Wijgerden |
| ½-½ | 58 | 1977 | Dutch Championship | A22 English |
| 28. C van Wijgerden vs J van Baarle |
| ½-½ | 24 | 1977 | Dutch Championship | C41 Philidor Defense |
| 29. Timman vs C van Wijgerden |
| 1-0 | 63 | 1977 | Dutch Championship | B08 Pirc, Classical |
| 30. C van Wijgerden vs R Hartoch |
| 0-1 | 44 | 1977 | Dutch Championship | B07 Pirc |
| 31. Korchnoi vs C van Wijgerden |
| 1-0 | 41 | 1977 | Dutch Championship | A75 Benoni, Classical with ...a6 and 10...Bg4 |
| 32. C van Wijgerden vs L Hofland |
| 1-0 | 34 | 1977 | Dutch Championship | B05 Alekhine's Defense, Modern |
| 33. G Ligterink vs C van Wijgerden |
| ½-½ | 25 | 1977 | Dutch Championship | B08 Pirc, Classical |
| 34. C van Wijgerden vs J H Donner |
| ½-½ | 47 | 1977 | Dutch Championship | C44 King's Pawn Game |
| 35. K Langeweg vs C van Wijgerden |
| ½-½ | 38 | 1977 | Dutch Championship | B06 Robatsch |
| 36. C van Wijgerden vs Van der Sterren |
| 1-0 | 53 | 1977 | Dutch Championship | C02 French, Advance |
| 37. P Boersma vs C van Wijgerden |
| ½-½ | 26 | 1977 | Dutch Championship | B08 Pirc, Classical |
| 38. C van Wijgerden vs F van der Vliet |
| ½-½ | 15 | 1977 | Dutch Championship | C15 French, Winawer |
| 39. C van Wijgerden vs Sosonko |
| ½-½ | 21 | 1977 | Amsterdam IBM | B89 Sicilian |
| 40. C van Wijgerden vs J H Donner |
| 0-1 | 37 | 1977 | Amsterdam IBM | B09 Pirc, Austrian Attack |
| 41. Kavalek vs C van Wijgerden |
| 1-0 | 57 | 1977 | Amsterdam IBM | A41 Queen's Pawn Game (with ...d6) |
| 42. C van Wijgerden vs K Hulak |
| 0-1 | 25 | 1977 | Amsterdam IBM | A00 Uncommon Opening |
| 43. Panno vs C van Wijgerden |
| ½-½ | 26 | 1977 | Amsterdam IBM | A22 English |
| 44. C van Wijgerden vs Adorjan |
| 1-0 | 43 | 1977 | Amsterdam IBM | B09 Pirc, Austrian Attack |
| 45. Miles vs C van Wijgerden |
| ½-½ | 22 | 1977 | Amsterdam IBM | A28 English |
| 46. C van Wijgerden vs S Tatai |
| 1-0 | 37 | 1977 | Amsterdam IBM | B23 Sicilian, Closed |
| 47. Quinteros vs C van Wijgerden |
| 1-0 | 37 | 1977 | Amsterdam IBM | A40 Queen's Pawn Game |
| 48. C van Wijgerden vs V Liberzon |
| ½-½ | 16 | 1977 | Amsterdam IBM | B23 Sicilian, Closed |
| 49. H Bohm vs C van Wijgerden |
| 0-1 | 51 | 1977 | Amsterdam IBM | A22 English |
| 50. C van Wijgerden vs Timman |
| ½-½ | 48 | 1977 | Amsterdam IBM | B09 Pirc, Austrian Attack |
Kibitzing
