| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. F Olafsson vs J Penrose |
 | 1-0 | 27 |
1956 |
Hastings -57 | E50 Nimzo-Indian, 4.e3 O-O 5.Nf3, without ...d5 |
| 2. F Olafsson vs D Horseman |
| 1-0 | 39 |
1956 |
Hastings 56/57 | E21 Nimzo-Indian, Three Knights |
| 3. F Olafsson vs Reshevsky |
| 1-0 | 43 |
1957 |
Dallas | E46 Nimzo-Indian |
| 4. F Olafsson vs A Matanovic |
| ½-½ | 41 |
1958 |
Portoroz izt | E59 Nimzo-Indian, 4.e3, Main line |
| 5. F Olafsson vs Bronstein |
| 0-1 | 48 |
1959 |
Moscow | E21 Nimzo-Indian, Three Knights |
| 6. F Olafsson vs Szabo |
| ½-½ | 51 |
1960 |
Buenos Aires | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 7. F Olafsson vs Bobotsov |
| 1-0 | 43 |
1961 |
Marianske Lazne zt | E52 Nimzo-Indian, 4.e3, Main line with ...b6 |
| 8. F Olafsson vs Bisguier |
| ½-½ | 35 |
1962 |
Izt | E46 Nimzo-Indian |
| 9. F Olafsson vs Petrosian |
| ½-½ | 25 |
1963 |
Cup Piatigorsky | E53 Nimzo-Indian, 4.e3 |
| 10. F Olafsson vs O'Kelly |
| 1-0 | 42 |
1967 |
Dundee (England) | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 11. F Olafsson vs A Medina-Garcia |
| 1-0 | 37 |
1969 |
Wijk aan Zee I | E51 Nimzo-Indian, 4.e3 |
| 12. F Olafsson vs Ulf Andersson |
| 0-1 | 76 |
1972 |
Reykjavik | E41 Nimzo-Indian |
| 13. F Olafsson vs Bronstein |
| ½-½ | 20 |
1975 |
Teesside | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 14. F Olafsson vs Browne |
| 1-0 | 41 |
1976 |
Wijk aan Zee | E41 Nimzo-Indian |
| 15. F Olafsson vs Karpov |
| ½-½ | 18 |
1976 |
2, Amsterdam Euwe mem | E53 Nimzo-Indian, 4.e3 |
| 16. F Olafsson vs Sosonko |
| 1-0 | 25 |
1976 |
Wijk aan Zee | E51 Nimzo-Indian, 4.e3 |
| 17. F Olafsson vs Csom |
| ½-½ | 32 |
1977 |
FRG-ch int 4th | E41 Nimzo-Indian |
