| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. D Bertholdt vs H Bouwmeester |
| ½-½ | 33 | 1956 | Copenhagen | E12 Queen's Indian |
| 27. D Bertholdt vs F Thorbergsson |
| ½-½ | 27 | 1956 | Copenhagen | E73 King's Indian |
| 28. A Nielsen vs D Bertholdt |
| 1-0 | 61 | 1956 | Copenhagen | A14 English |
| 29. D Bertholdt vs E Pedersen |
| ½-½ | 28 | 1956 | Copenhagen | A90 Dutch |
| 30. R Fuchs vs D Bertholdt |
| ½-½ | 25 | 1956 | Copenhagen | C05 French, Tarrasch |
| 31. D Bertholdt vs I Johannsson |
| 1-0 | 54 | 1956 | Copenhagen | A70 Benoni, Classical with 7.Nf3 |
| 32. J Enevoldsen vs D Bertholdt |
| ½-½ | 25 | 1956 | Copenhagen | C17 French, Winawer, Advance |
| 33. D Bertholdt vs Larsen |
| 0-1 | 22 | 1956 | Copenhagen | E14 Queen's Indian |
| 34. F Roessel vs D Bertholdt |
| 0-1 | 30 | 1956 | Copenhagen | A02 Bird's Opening |
| 35. D Bertholdt vs H Juettler |
| 1-0 | 25 | 1956 | East German Championship | A56 Benoni Defense |
| 36. M Kahn vs D Bertholdt |
| 0-1 | 53 | 1956 | East German Championship | A04 Reti Opening |
| 37. S Dittmann vs D Bertholdt |
| ½-½ | 24 | 1956 | East German Championship | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 38. D Bertholdt vs W Golz |
| 1-0 | 23 | 1956 | East German Championship | D28 Queen's Gambit Accepted, Classical |
| 39. D Bertholdt vs A Zirngibl |
| 1-0 | 42 | 1956 | East German Championship | D85 Grunfeld |
| 40. D Bertholdt vs H Rittner |
| 1-0 | 34 | 1956 | East German Championship | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 41. B Malich vs D Bertholdt |
| ½-½ | 27 | 1956 | East German Championship | E15 Queen's Indian |
| 42. D Bertholdt vs H Liebert |
| 1-0 | 41 | 1956 | East German Championship | A80 Dutch |
| 43. J Franz vs D Bertholdt |
| 1-0 | 42 | 1956 | East German Championship | C07 French, Tarrasch |
| 44. D Bertholdt vs W Breustedt |
| 0-1 | 39 | 1956 | East German Championship | D07 Queen's Gambit Declined, Chigorin Defense |
| 45. D Bertholdt vs H Handel |
| 0-1 | 16 | 1956 | East German Championship | E00 Queen's Pawn Game |
| 46. S Muehlberg vs D Bertholdt |
| ½-½ | 45 | 1956 | East German Championship | A13 English |
| 47. D Bertholdt vs R Fuchs |
| ½-½ | 17 | 1956 | East German Championship | E14 Queen's Indian |
| 48. E Bauer vs D Bertholdt |
| ½-½ | 30 | 1956 | East German Championship | A07 King's Indian Attack |
| 49. K Knothe vs D Bertholdt |
| 0-1 | 42 | 1956 | East German Championship | E33 Nimzo-Indian, Classical |
| 50. D Bertholdt vs N Minev |
| ½-½ | 38 | 1957 | World Student Team Championship | E76 King's Indian, Four Pawns Attack |
Kibitzing
