| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. H Kramer vs K Bergsma |
| 1-0 | 64 | 1955 | Hoogovens | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 27. K Bergsma vs F J Perez |
| ½-½ | 26 | 1955 | Hoogovens | D04 Queen's Pawn Game |
| 28. B Milic vs K Bergsma |
| 1-0 | 62 | 1955 | Hoogovens | A15 English |
| 29. K Bergsma vs L Prins |
| 0-1 | 31 | 1955 | Hoogovens | A57 Benko Gambit |
| 30. Pilnik vs K Bergsma |
| 0-1 | 75 | 1955 | Hoogovens | B45 Sicilian, Taimanov |
| 31. K Bergsma vs H Bouwmeester |
| 0-1 | 57 | 1955 | Hoogovens | B17 Caro-Kann, Steinitz Variation |
| 32. H van Oosterom vs K Bergsma |
| 0-1 | 38 | 1963 | Dutch Championship | A22 English |
| 33. K Langeweg vs K Bergsma |
| 1-0 | 38 | 1963 | Dutch Championship | E12 Queen's Indian |
| 34. L Barden vs K Bergsma |
| ½-½ | 45 | 1963 | Anglo-Dutch Match | E27 Nimzo-Indian, Samisch Variation |
| 35. K Bergsma vs L Barden |
| ½-½ | 37 | 1963 | Anglo-Dutch Match | B56 Sicilian |
| 36. H Kramer vs K Bergsma |
| ½-½ | 50 | 1964 | Hoogovens-B | A25 English |
| 37. K Bergsma vs P C Gibbs |
| 1-0 | 22 | 1964 | Hoogovens-B | B32 Sicilian |
| 38. G Kieninger vs K Bergsma |
| 1-0 | 43 | 1964 | Hoogovens-B | B58 Sicilian |
| 39. K Bergsma vs D van Geet |
| 0-1 | 27 | 1964 | Hoogovens-B | B08 Pirc, Classical |
| 40. J Flesch vs K Bergsma |
| 1-0 | 45 | 1964 | Hoogovens-B | A07 King's Indian Attack |
| 41. H Lehmann vs K Bergsma |
| 1-0 | 40 | 1964 | Hoogovens-B | D45 Queen's Gambit Declined Semi-Slav |
| 42. K Bergsma vs H Mueller |
| 1-0 | 28 | 1964 | Hoogovens-B | B08 Pirc, Classical |
| 43. B Sandor vs K Bergsma |
| 1-0 | 33 | 1964 | Hoogovens-B | A13 English |
| 44. K Bergsma vs F Henneberke |
| ½-½ | 44 | 1964 | Hoogovens-B | C75 Ruy Lopez, Modern Steinitz Defense |
| 45. P Smederevac vs K Bergsma |
| 1-0 | 73 | 1964 | Hoogovens-B | C00 French Defense |
| 46. K Bergsma vs W Litmanowicz |
| 1-0 | 35 | 1964 | Hoogovens-B | C84 Ruy Lopez, Closed |
| 47. F Kuijpers vs K Bergsma |
| 1-0 | 25 | 1965 | Dutch Championship | B24 Sicilian, Closed |
Kibitzing
