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 M Laisaari |
| 1-0 | 33 | 1945 | Match/Natio FIN-SWE | E11 Bogo-Indian Defense |
3. M Laisaari vs Z Nilsson |
| 0-1 | 61 | 1945 | Match/Natio FIN-SWE | A28 English |
4. K Skold vs Z Nilsson |
| 1-0 | 46 | 1946 | Stockholm /47 | B72 Sicilian, Dragon |
5. Z Nilsson vs E Book |
  | 0-1 | 28 | 1946 | Stockholm 4647 | D44 Queen's Gambit Declined Semi-Slav |
6. Z Nilsson vs F Ekstrom |
| 0-1 | 55 | 1946 | Stockholm /47 | D28 Queen's Gambit Accepted, Classical |
7. E Lundin vs Z Nilsson |
| 1-0 | 40 | 1946 | Stockholm /47 | A07 King's Indian Attack |
8. Z Nilsson vs G Skarp |
| 1-0 | 32 | 1946 | Stockholm /47 | D37 Queen's Gambit Declined |
9. Z Nilsson vs B Hult |
| ½-½ | 72 | 1946 | Stockholm /47 | D68 Queen's Gambit Declined, Orthodox Defense, Classical |
10. G Danielsson vs Z Nilsson |
| ½-½ | 65 | 1946 | Stockholm /47 | D30 Queen's Gambit Declined |
11. G Stoltz vs Z Nilsson |
| ½-½ | 22 | 1946 | Stockholm /47 | D02 Queen's Pawn Game |
12. Z Nilsson vs W Pettersson |
| 1-0 | 60 | 1946 | Stockholm /47 | A83 Dutch, Staunton Gambit |
13. T Salo vs Z Nilsson |
| ½-½ | 32 | 1946 | Match/Nation FIN-SWE | D30 Queen's Gambit Declined |
14. Z Nilsson vs T Salo |
 | 1-0 | 28 | 1946 | Match/Nation FIN-SWE | E11 Bogo-Indian Defense |
15. B Nielsen vs Z Nilsson |
| 0-1 | 37 | 1946 | Nordic Congress, Copenhagen | D31 Queen's Gambit Declined |
16. Z Nilsson vs S Herseth |
| 0-1 | 52 | 1946 | Nordic Congress, Copenhagen | E33 Nimzo-Indian, Classical |
17. Z Nilsson vs G Stoltz |
| 0-1 | 25 | 1946 | Norte vs Sur | D22 Queen's Gambit Accepted |
18. Z Nilsson vs M Rantanen |
| ½-½ | 57 | 1948 | Saltsjobaden tt | D52 Queen's Gambit Declined |
19. Z Nilsson vs E Book |
| 0-1 | 41 | 1951 | Match/Nation SWE-FIN | D59 Queen's Gambit Declined, Tartakower |
20. E Book vs Z Nilsson |
| ½-½ | 35 | 1951 | Match/Nation SWE-FIN | B55 Sicilian, Prins Variation, Venice Attack |
21. Z Nilsson vs G Stoltz |
| ½-½ | 40 | 1953 | SWE-ch37 plof Stoltz-Nilsson +5-3=2 | C92 Ruy Lopez, Closed |
22. G Stoltz vs Z Nilsson |
| 1-0 | 35 | 1953 | SWE-ch37 plof Stoltz-Nilsson +5-3=2 | D43 Queen's Gambit Declined Semi-Slav |
23. Z Nilsson vs G Stoltz |
| 1-0 | 81 | 1953 | SWE-ch37 plof Stoltz-Nilsson +5-3=2 | C97 Ruy Lopez, Closed, Chigorin |
24. G Stoltz vs Z Nilsson |
| ½-½ | 43 | 1953 | SWE-ch37 plof Stoltz-Nilsson +5-3=2 | D45 Queen's Gambit Declined Semi-Slav |
25. Z Nilsson vs G Stoltz |
| 1-0 | 40 | 1953 | SWE-ch37 plof Stoltz-Nilsson +5-3=2 | C92 Ruy Lopez, Closed |