| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. F Thorbergsson vs G Gunnarsson |
| 0-1 | 34 | 1956 | Sigurdsson Memorial | D29 Queen's Gambit Accepted, Classical |
| 2. B Benediktsson vs G Gunnarsson |
| ½-½ | 36 | 1956 | Sigurdsson Memorial | D24 Queen's Gambit Accepted |
| 3. G Gunnarsson vs G Ilivitsky |
| 0-1 | 45 | 1956 | Sigurdsson Memorial | B73 Sicilian, Dragon, Classical |
| 4. G Gunnarsson vs S Kristinsson |
| 1-0 | 33 | 1956 | Sigurdsson Memorial | E33 Nimzo-Indian, Classical |
| 5. G Gunnarsson vs F Olafsson |
| 0-1 | 35 | 1957 | Reykjavik | B62 Sicilian, Richter-Rauzer |
| 6. G Agustsson vs G Gunnarsson |
| ½-½ | 35 | 1957 | Reykjavik | C48 Four Knights |
| 7. G Gunnarsson vs G Gudmundsson |
| ½-½ | 45 | 1957 | Reykjavik | C47 Four Knights |
| 8. I Asmundsson vs G Gunnarsson |
 | 1-0 | 28 | 1957 | Reykjavik | A65 Benoni, 6.e4 |
| 9. G Gunnarsson vs I Johannsson |
| 0-1 | 45 | 1957 | Reykjavik | B22 Sicilian, Alapin |
| 10. G Palmason vs G Gunnarsson |
| 1-0 | 35 | 1957 | Reykjavik | E11 Bogo-Indian Defense |
| 11. G Gunnarsson vs B Johannesson |
| ½-½ | 48 | 1957 | Reykjavik | E61 King's Indian |
| 12. Pilnik vs G Gunnarsson |
| 1-0 | 38 | 1957 | Reykjavik | A07 King's Indian Attack |
| 13. G Gunnarsson vs A Gudmundsson |
| 1-0 | 32 | 1957 | Reykjavik | E80 King's Indian, Samisch Variation |
| 14. G Gunnarsson vs Benko |
| 0-1 | 42 | 1957 | Reykjavik | D80 Grunfeld |
| 15. Stahlberg vs G Gunnarsson |
| 1-0 | 26 | 1957 | Reykjavik | E67 King's Indian, Fianchetto |
| 16. C Papapostolou vs G Gunnarsson |
| 0-1 | 32 | 1960 | Leipzig Olympiad qual-3 | B83 Sicilian |
| 17. G Gunnarsson vs G Chalkhaasuren |
| 1-0 | 58 | 1960 | Leipzig Olympiad qual-3 | A80 Dutch |
| 18. G Gunnarsson vs E Lundin |
| 0-1 | 73 | 1960 | Leipzig Olympiad qual-3 | D22 Queen's Gambit Accepted |
| 19. M Zubieta Villegas vs G Gunnarsson |
| 0-1 | 41 | 1960 | Leipzig Olympiad qual-3 | E73 King's Indian |
| 20. G Gunnarsson vs L Barden |
| 0-1 | 42 | 1960 | Leipzig Olympiad qual-3 | E89 King's Indian, Samisch, Orthodox Main line |
| 21. Hort vs G Gunnarsson |
| 1-0 | 41 | 1960 | Leipzig Olympiad qual-3 | C11 French |
| 22. E Jensen vs G Gunnarsson |
| 1-0 | 35 | 1960 | Leipzig Olympiad qual-3 | A38 English, Symmetrical |
| 23. G Gunnarsson vs Kahia |
| 1-0 | 43 | 1960 | Leipzig Olympiad qual-3 | D50 Queen's Gambit Declined |
| 24. G Gunnarsson vs R B Sapre |
| 0-1 | 41 | 1960 | Leipzig Olympiad Final-B | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 25. I Aloni vs G Gunnarsson |
| 1-0 | 38 | 1960 | Leipzig Olympiad Final-B | E38 Nimzo-Indian, Classical, 4...c5 |
Kibitzing
