| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Arnason vs C Hoi |
| 0-1 | 57 | 1979 | Gladsaxe | C11 French |
| 2. J Arnason vs A Savage |
| 1-0 | 36 | 1982 | Reykjavik Open | C11 French |
| 3. J Arnason vs Petrosian |
 | ½-½ | 46 | 1983 | Keres Memorial | C11 French |
| 4. J Arnason vs B Rakic |
| 1-0 | 42 | 1983 | Bela Crkva Open | C11 French |
| 5. J Arnason vs I Asmundsson |
| 1-0 | 21 | 1985 | Vestmannaeyjar | C11 French |
| 6. J Arnason vs Dolmatov |
| ½-½ | 13 | 1988 | Reykjavik Open | C11 French |
| 7. J Arnason vs M Gurevich |
| ½-½ | 24 | 1988 | Reykjavik Open | C11 French |
| 8. J Arnason vs Dolmatov |
| ½-½ | 31 | 1988 | Akureyri | C11 French |
| 9. J Arnason vs S Skembris |
| 1-0 | 29 | 1988 | Thessaloniki Olympiad | C11 French |
| 10. J Arnason vs S Bjarnason |
| 1-0 | 38 | 1989 | Reykjavik | C11 French |
Kibitzing
