| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A Semakoff vs O Sande |
| 1-0 | 61 | 1976 | Oslo Chess International | B48 Sicilian, Taimanov Variation |
| 2. A Semakoff vs O S Knudsen |
| 0-1 | 19 | 1976 | Oslo Chess International | B53 Sicilian |
| 3. O Antonsen vs A Semakoff |
| ½-½ | 19 | 1976 | Oslo Chess International | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 4. T Harestad vs A Semakoff |
| 1-0 | 40 | 1976 | Oslo Chess International | A22 English |
| 5. A Semakoff vs P Ofstad |
| 0-1 | 60 | 1976 | Oslo Chess International | C80 Ruy Lopez, Open |
| 6. Y Barda vs A Semakoff |
| 1-0 | 46 | 1976 | Oslo Chess International | C47 Four Knights |
| 7. E Raaste vs A Semakoff |
| 1-0 | 44 | 1976 | Oslo Chess International | A04 Reti Opening |
| 8. A Semakoff vs T Heiberg |
| 1-0 | 29 | 1976 | Oslo Chess International | B12 Caro-Kann Defense |
| 9. A Semakoff vs T A Hauge |
| 1-0 | 40 | 1976 | Oslo Chess International | C46 Three Knights |
| 10. P Stigar vs A Semakoff |
| 0-1 | 25 | 1980 | NOR-ch | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 11. A Semakoff vs O Sande |
| ½-½ | 15 | 1980 | NOR-ch | C44 King's Pawn Game |
| 12. Dlugy vs A Semakoff |
| 1-0 | 65 | 1982 | Gausdal International | D32 Queen's Gambit Declined, Tarrasch |
| 13. A Semakoff vs J Nykopp |
| 1-0 | 33 | 1982 | Gausdal International | C44 King's Pawn Game |
| 14. A Semakoff vs K Burger |
| ½-½ | 40 | 1982 | Gausdal International | B13 Caro-Kann, Exchange |
| 15. S Odendahl vs A Semakoff |
| 1-0 | 55 | 1982 | Gausdal International | D02 Queen's Pawn Game |
| 16. A Semakoff vs G Iskov |
| 0-1 | 34 | 1982 | Gausdal International | B95 Sicilian, Najdorf, 6...e6 |
| 17. J Hartung-Nielsen vs A Semakoff |
| 0-1 | 26 | 1982 | Gausdal International | D32 Queen's Gambit Declined, Tarrasch |
| 18. A Semakoff vs C Bergstrom |
| 0-1 | 53 | 1982 | Gausdal International | B46 Sicilian, Taimanov Variation |
| 19. A Semakoff vs J O Fries-Nielsen |
| 0-1 | 42 | 1983 | Gausdal Jubilee | A46 Queen's Pawn Game |
| 20. E Gausel vs A Semakoff |
| 1-0 | 20 | 1983 | Gausdal Jubilee | D01 Richter-Veresov Attack |
| 21. T Heiberg vs A Semakoff |
| ½-½ | 10 | 1983 | Gausdal Jubilee | D34 Queen's Gambit Declined, Tarrasch |
| 22. A Semakoff vs B Olsson |
| ½-½ | 76 | 1983 | Gausdal Jubilee | B06 Robatsch |
| 23. D de Lange vs A Semakoff |
| ½-½ | 23 | 1983 | Gausdal Jubilee | D05 Queen's Pawn Game |
| 24. A Semakoff vs R Elseth |
| ½-½ | 29 | 1983 | Gausdal Jubilee | C91 Ruy Lopez, Closed |
| 25. P Haugli vs A Semakoff |
| 1-0 | 26 | 1983 | Gausdal Jubilee | A06 Reti Opening |
Kibitzing
