| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Z Nilsson vs Keres |
| 0-1 | 46 |
1944 |
Lidkoping | E10 Queen's Pawn Game |
| 2. Z Nilsson vs Book |
 | 0-1 | 28 |
1946 |
Stockholm 4647 | D44 Queen's Gambit Declined Semi-Slav |
| 3. Z Nilsson vs M Rantanen |
| ½-½ | 57 |
1948 |
Saltsjobaden tt | D52 Queen's Gambit Declined |
| 4. Z Nilsson vs B Rabar |
| ½-½ | 63 |
1954 |
Amsterdam ol (Men) | B95 Sicilian, Najdorf, 6...e6 |
| 5. Z Nilsson vs Geller |
 | 0-1 | 23 |
1954 |
Stockholm izt | B62 Sicilian, Richter-Rauzer |
| 6. I Johannsson vs Z Nilsson |
 | 0-1 | 23 |
1954 |
Amsterdam ol (Men) | D47 Queen's Gambit Declined Semi-Slav |
| 7. Z Nilsson vs Keres |
 | ½-½ | 41 |
1954 |
Amsterdam ol final | C97 Ruy Lopez, Closed, Chigorin |
| 8. Z Nilsson vs Pilnik |
| 0-1 | 61 |
1954 |
Amsterdam ol (Men) | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 9. Z Nilsson vs G Noradounghian |
| 1-0 | 42 |
1954 |
Amsterdam ol (Men) | C43 Petrov, Modern Attack |
| 10. E Gereben vs Z Nilsson |
| 0-1 | 56 |
1954 |
Amsterdam ol (Men) | A15 English |
| 11. M Bobotsov vs Z Nilsson |
| 1-0 | 41 |
1954 |
Amsterdam ol (Men) fin-A | D30 Queen's Gambit Declined |
| 12. Z Nilsson vs I Aloni |
| 0-1 | 45 |
1954 |
Amsterdam ol (Men) | C02 French, Advance |
| 13. Z Nilsson vs O Kastel |
| 1-0 | 40 |
1954 |
Amsterdam ol (Men) | B32 Sicilian |
| 14. J Fichtl vs Z Nilsson |
| 1-0 | 34 |
1954 |
Amsterdam ol (Men) | C70 Ruy Lopez |
| 15. I Aloni vs Z Nilsson |
| 1-0 | 48 |
1954 |
Amsterdam ol (Men) | D31 Queen's Gambit Declined |
| 16. G Pfeiffer vs Z Nilsson |
| 1-0 | 30 |
1954 |
Amsterdam ol (Men) | B30 Sicilian |
| 17. Geller vs Z Nilsson |
 | 1-0 | 30 |
1954 |
Stockholm SWE-URS | D21 Queen's Gambit Accepted |
| 18. H Enevoldsen vs Z Nilsson |
| 0-1 | 46 |
1954 |
Amsterdam ol (Men) | D44 Queen's Gambit Declined Semi-Slav |
| 19. R Cherubim vs Z Nilsson |
| ½-½ | 36 |
1956 |
Hastings B | E00 Queen's Pawn Game |
| 20. Z Nilsson vs Filip |
| 1-0 | 40 |
1958 |
Munich ol (Men) prel | B80 Sicilian, Scheveningen |
| 21. Z Nilsson vs C B Van den Berg |
| 1-0 | 30 |
1958 |
13th olm final B | A26 English |
| 22. J M Ribeiro vs Z Nilsson |
| 0-1 | 34 |
1958 |
13th olm qual. group 4 | A45 Queen's Pawn Game |
| 23. Z Nilsson vs A Tarnowski |
| 0-1 | 33 |
1958 |
13th olm final B | A22 English |
| 24. V Bergraser vs Z Nilsson |
| 1-0 | 40 |
1958 |
13th olm final B | A43 Old Benoni |
| 25. Z Nilsson vs T Sakellaropoulos |
| 1-0 | 48 |
1958 |
13th olm qual. group 4 | C02 French, Advance |