| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Arnason vs R Byrne |
| 0-1 | 54 | 1980 | Reykjavik | B92 Sicilian, Najdorf, Opocensky Variation |
| 2. J Arnason vs Quinteros |
| ½-½ | 45 | 1980 | Lone Pine | B92 Sicilian, Najdorf, Opocensky Variation |
| 3. J Arnason vs Kasparov |
  | 0-1 | 58 | 1980 | World Junior Championship | B92 Sicilian, Najdorf, Opocensky Variation |
| 4. J Arnason vs Tseshkovsky |
| ½-½ | 22 | 1980 | Chigorin Memorial | B92 Sicilian, Najdorf, Opocensky Variation |
| 5. J Arnason vs N Stull |
| ½-½ | 32 | 1980 | Valletta Olympiad | B92 Sicilian, Najdorf, Opocensky Variation |
| 6. J Arnason vs Pigusov |
| ½-½ | 45 | 1980 | European Junior Championship 1980/81 | B92 Sicilian, Najdorf, Opocensky Variation |
| 7. J Arnason vs M Brooks |
| 1-0 | 38 | 1981 | Lone Pine Open | B92 Sicilian, Najdorf, Opocensky Variation |
| 8. J Arnason vs P Szekely |
| ½-½ | 18 | 1983 | Keres Memorial | B92 Sicilian, Najdorf, Opocensky Variation |
| 9. J Arnason vs de Firmian |
| ½-½ | 15 | 1983 | Miroslav Bakic Memorial | B92 Sicilian, Najdorf, Opocensky Variation |
| 10. J Arnason vs G Tringov |
| 1-0 | 37 | 1986 | Plovdiv | B92 Sicilian, Najdorf, Opocensky Variation |
| 11. J Arnason vs H Olafsson |
| ½-½ | 22 | 1987 | Reykjavik | B92 Sicilian, Najdorf, Opocensky Variation |
| 12. J Arnason vs Hjartarson |
| ½-½ | 17 | 1987 | Reykjavik | B92 Sicilian, Najdorf, Opocensky Variation |
| 13. J Arnason vs D King |
| 1-0 | 42 | 1990 | Reykjavik Summit | B92 Sicilian, Najdorf, Opocensky Variation |
Kibitzing
