| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. L Ogaard vs T Arnason |
| 1-0 | 52 | 1986 | Gausdal Int | A40 Queen's Pawn Game |
| 2. T Arnason vs V Zaltsman |
| 0-1 | 22 | 1986 | Reykjavik Open | D20 Queen's Gambit Accepted |
| 3. A Karason vs T Arnason |
| 0-1 | 47 | 1986 | Reykjavik Open | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 4. T Arnason vs Adianto |
| 0-1 | 36 | 1986 | Reykjavik Open | A56 Benoni Defense |
| 5. K Burger vs T Arnason |
| 1-0 | 28 | 1986 | Reykjavik Open | E16 Queen's Indian |
| 6. T Arnason vs K Thorsteins |
| 1-0 | 34 | 1986 | Icelandic Championship | E00 Queen's Pawn Game |
| 7. B Jonsson vs T Arnason |
| 1-0 | 41 | 1986 | Icelandic Championship | C18 French, Winawer |
| 8. J Arnason vs T Arnason |
| 1-0 | 24 | 1986 | Icelandic Championship | C19 French, Winawer, Advance |
| 9. T Arnason vs H Stefansson |
| 0-1 | 55 | 1986 | Icelandic Championship | B06 Robatsch |
| 10. D Olafsson vs T Arnason |
| 1-0 | 42 | 1986 | Icelandic Championship | C02 French, Advance |
| 11. T Arnason vs G Sigurjonsson |
| 0-1 | 60 | 1986 | Icelandic Championship | E30 Nimzo-Indian, Leningrad |
| 12. D Hansson vs T Arnason |
| 1-0 | 41 | 1986 | Icelandic Championship | C07 French, Tarrasch |
| 13. T Arnason vs Petursson |
| 0-1 | 56 | 1986 | Icelandic Championship | E21 Nimzo-Indian, Three Knights |
| 14. Hjartarson vs T Arnason |
| 1-0 | 43 | 1986 | Icelandic Championship | C09 French, Tarrasch, Open Variation, Main line |
| 15. T Arnason vs S Bjarnason |
| 0-1 | 36 | 1986 | Icelandic Championship | A56 Benoni Defense |
| 16. T Thorhallsson vs T Arnason |
| 1-0 | 29 | 1986 | Icelandic Championship | C15 French, Winawer |
| 17. T Arnason vs H Olafsson |
| 0-1 | 27 | 1987 | Icelandic Championship | E43 Nimzo-Indian, Fischer Variation |
| 18. D Olafsson vs T Arnason |
| 1-0 | 27 | 1987 | Icelandic Championship | C02 French, Advance |
| 19. J Vidarsson vs T Arnason |
| 1-0 | 39 | 1987 | Icelandic Championship | C18 French, Winawer |
| 20. G Thorhallsson vs T Arnason |
| 1-0 | 53 | 1987 | Icelandic Championship | C18 French, Winawer |
| 21. T Thorhallsson vs T Arnason |
| ½-½ | 11 | 1987 | Icelandic Championship | C17 French, Winawer, Advance |
| 22. T Arnason vs Petursson |
| 0-1 | 35 | 1987 | Icelandic Championship | E46 Nimzo-Indian |
| 23. T Arnason vs H Stefansson |
| ½-½ | 32 | 1987 | Icelandic Championship | A60 Benoni Defense |
| 24. S Bjarnason vs T Arnason |
| ½-½ | 42 | 1987 | Icelandic Championship | C01 French, Exchange |
| 25. T Arnason vs A Karason |
| ½-½ | 24 | 1987 | Icelandic Championship | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
Kibitzing
