| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A Omarsson vs P Hardarson |
| 0-1 | 19 | 2019 | Reykjavik Open | A41 Queen's Pawn Game (with ...d6) |
| 2. K E Steingrimsson vs A Omarsson |
| 0-1 | 14 | 2019 | Reykjavik Open | A46 Queen's Pawn Game |
| 3. G Petursson vs A Omarsson |
| 1-0 | 35 | 2019 | Reykjavik Open | A10 English |
| 4. A Omarsson vs L Ptacnikova |
| 0-1 | 25 | 2019 | Reykjavik Open | D85 Grunfeld |
| 5. Chirag Hosdurga vs A Omarsson |
| 1-0 | 23 | 2019 | Reykjavik Open | E76 King's Indian, Four Pawns Attack |
| 6. G Quparadze vs A Omarsson |
| 1-0 | 36 | 2021 | European Championship | B09 Pirc, Austrian Attack |
| 7. A Omarsson vs T Gueci |
| 0-1 | 19 | 2021 | European Championship | E25 Nimzo-Indian, Samisch |
| 8. T Thorsteinsson vs A Omarsson |
| ½-½ | 27 | 2022 | Kvika Reykjavik Open | B09 Pirc, Austrian Attack |
| 9. O H Brynjarsson vs A Omarsson |
| 0-1 | 40 | 2022 | Kvika Reykjavik Open | E61 King's Indian |
| 10. A Omarsson vs A Collins |
| 0-1 | 34 | 2022 | Kvika Reykjavik Open | A49 King's Indian, Fianchetto without c4 |
| 11. A Fjeldsted vs A Omarsson |
| ½-½ | 26 | 2022 | Kvika Reykjavik Open | B08 Pirc, Classical |
| 12. A Omarsson vs J Steiner |
 | 0-1 | 21 | 2022 | Kvika Reykjavik Open | D32 Queen's Gambit Declined, Tarrasch |
| 13. Ian S Earley vs A Omarsson |
| 0-1 | 22 | 2022 | Kvika Reykjavik Open | A41 Queen's Pawn Game (with ...d6) |
| 14. A Omarsson vs S Arnalds |
| 1-0 | 50 | 2022 | Kvika Reykjavik Open | A45 Queen's Pawn Game |
| 15. D Nesse vs A Omarsson |
| 1-0 | 39 | 2023 | Kragero Resort Chess | B06 Robatsch |
| 16. V Zamvar vs A Omarsson |
| 0-1 | 8 | 2023 | Reykjavik Open | A48 King's Indian |
| 17. A Omarsson vs P Terhuven |
| 0-1 | 44 | 2023 | Reykjavik Open | D35 Queen's Gambit Declined |
| 18. A Omarsson vs S Rohit |
| ½-½ | 21 | 2023 | Serbia Open Masters | D31 Queen's Gambit Declined |
| 19. B Debevec vs A Omarsson |
| ½-½ | 35 | 2023 | Serbia Open Masters | B94 Sicilian, Najdorf |
| 20. A Omarsson vs D Jandric |
| 1-0 | 15 | 2023 | Serbia Open Masters | E90 King's Indian |
| 21. L Kurmangaliyeva vs A Omarsson |
| 1-0 | 34 | 2023 | Serbia Open Masters | B53 Sicilian |
| 22. A Omarsson vs I Stanojevic |
| 0-1 | 41 | 2023 | Serbia Open Masters | E20 Nimzo-Indian |
| 23. N Ravic vs A Omarsson |
| 1-0 | 17 | 2023 | Serbia Open Masters | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 24. A Omarsson vs G Antova |
| 0-1 | 42 | 2023 | Serbia Open Masters | E50 Nimzo-Indian, 4.e3 O-O 5.Nf3, without ...d5 |
| 25. S Barkasheva vs A Omarsson |
| 1-0 | 23 | 2023 | Serbia Open Masters | B80 Sicilian, Scheveningen |
Kibitzing
