| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. S Herseth vs B H Wood |
| 1-0 | 29 | 1947 | Aalborg | B72 Sicilian, Dragon |
| 27. S Herseth vs G Sigurdsson |
| ½-½ | 50 | 1950 | Nordic Congress, Reykjavik | B13 Caro-Kann, Exchange |
| 28. S Herseth vs G Agustsson |
| ½-½ | 45 | 1950 | Nordic Congress, Reykjavik | A16 English |
| 29. J Nielsen vs S Herseth |
| ½-½ | 36 | 1950 | Nordic Congress, Reykjavik | D40 Queen's Gambit Declined, Semi-Tarrasch |
| 30. S Herseth vs B Moller |
| 0-1 | 33 | 1950 | Nordic Congress, Reykjavik | A95 Dutch, Stonewall |
| 31. B Sundberg vs S Herseth |
| 1-0 | 51 | 1950 | Nordic Congress, Reykjavik | D38 Queen's Gambit Declined, Ragozin Variation |
| 32. S Herseth vs A Vestol |
| 0-1 | 46 | 1950 | Nordic Congress, Reykjavik | A25 English |
| 33. E Gilfer vs S Herseth |
| 0-1 | 40 | 1950 | Nordic Congress, Reykjavik | D02 Queen's Pawn Game |
| 34. S Herseth vs P M Nielsen |
| ½-½ | 61 | 1950 | Nordic Congress, Reykjavik | A16 English |
| 35. O Kinnmark vs S Herseth |
| 0-1 | 26 | 1950 | Nordic Congress, Reykjavik | B23 Sicilian, Closed |
| 36. S Herseth vs F Olafsson |
| 0-1 | 60 | 1953 | Nordic Championship | A22 English |
| 37. Larsen vs S Herseth |
 | 1-0 | 36 | 1953 | Nordic Championship | A05 Reti Opening |
Kibitzing
