| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Vukcevich vs H Olafsson |
| ½-½ | 43 |
1976 |
Reykjavik | B84 Sicilian, Scheveningen |
| 2. Timman vs H Olafsson |
| 1-0 | 25 |
1976 |
Reykjavik 23/511 | B97 Sicilian, Najdorf |
| 3. L Day vs H Olafsson |
| 1-0 | 53 |
1976 |
Haifa | B23 Sicilian, Closed |
| 4. Shamkovich vs H Olafsson |
| 1-0 | 35 |
1979 |
Lone Pine (USA) | B81 Sicilian, Scheveningen, Keres Attack |
| 5. V Liberzon vs H Olafsson |
| ½-½ | 25 |
1979 |
Lone Pine op | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 6. Geller vs H Olafsson |
| 1-0 | 57 |
1980 |
Malta | B23 Sicilian, Closed |
| 7. E Raaste vs H Olafsson |
| ½-½ | 34 |
1981 |
Reykjavik | B93 Sicilian, Najdorf, 6.f4 |
| 8. J C Hansen vs H Olafsson |
| 0-1 | 37 |
1981 |
Reykjavik | B93 Sicilian, Najdorf, 6.f4 |
| 9. DeFirmian vs H Olafsson |
| ½-½ | 18 |
1983 |
Bunadarbanka (Iceland) | B93 Sicilian, Najdorf, 6.f4 |
| 10. J L Arnason vs H Olafsson |
| ½-½ | 17 |
1984 |
Reykjavik | B93 Sicilian, Najdorf, 6.f4 |
| 11. Chandler vs H Olafsson |
| 0-1 | 35 |
1984 |
Reykjavik (Iceland) | B90 Sicilian, Najdorf |
| 12. Geller vs H Olafsson |
| ½-½ | 26 |
1984 |
Reykjavik | B92 Sicilian, Najdorf, Opocensky Variation |
| 13. Spassky vs H Olafsson |
| ½-½ | 22 |
1985 |
Reykjavik | B25 Sicilian, Closed |
| 14. Van der Wiel vs H Olafsson |
| 1-0 | 34 |
1985 |
Reykjavik | B92 Sicilian, Najdorf, Opocensky Variation |
| 15. Short vs H Olafsson |
| 1-0 | 48 |
1987 |
Wijk aan Zee | B77 Sicilian, Dragon, Yugoslav Attack |
| 16. A Zapata vs H Olafsson |
| 1-0 | 56 |
1987 |
Wijk aan Zee | B90 Sicilian, Najdorf |
| 17. DeFirmian vs H Olafsson |
| 0-1 | 18 |
1987 |
New | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 18. J L Arnason vs H Olafsson |
| ½-½ | 11 |
1987 |
Scandinavia | B93 Sicilian, Najdorf, 6.f4 |
| 19. Judit Polgar vs H Olafsson |
 | 1-0 | 56 |
1988 |
Egilsstadir | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 20. Ivanchuk vs H Olafsson |
| 1-0 | 35 |
1988 |
Thessaloniki olm | B84 Sicilian, Scheveningen |
| 21. S Smagin vs H Olafsson |
| 1-0 | 46 |
1988 |
Yerevan | B22 Sicilian, Alapin |
| 22. Balashov vs H Olafsson |
| ½-½ | 12 |
1989 |
Reykjavik | B23 Sicilian, Closed |
| 23. E Torre vs H Olafsson |
| 0-1 | 59 |
1990 |
Olympiad | B40 Sicilian |
| 24. Van der Wiel vs H Olafsson |
| 1-0 | 26 |
1991 |
Wijk aan Zee | B23 Sicilian, Closed |
| 25. Sherzer vs H Olafsson |
 | 1-0 | 25 |
1991 |
Philadelphia World op | B90 Sicilian, Najdorf |