| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. G Sigurjonsson vs G Palmason |
| ½-½ | 24 | 1966 | Reykjavik | B80 Sicilian, Scheveningen |
| 2. G Sigurjonsson vs E Book |
| 0-1 | 42 | 1966 | Reykjavik | C67 Ruy Lopez |
| 3. O'Kelly vs G Sigurjonsson |
| 1-0 | 31 | 1966 | Reykjavik | D97 Grunfeld, Russian |
| 4. G Sigurjonsson vs B Thorsteinsson |
| ½-½ | 37 | 1966 | Reykjavik | B30 Sicilian |
| 5. F Olafsson vs G Sigurjonsson |
| 1-0 | 51 | 1966 | Reykjavik | D71 Neo-Grunfeld |
| 6. G Sigurjonsson vs Vasiukov |
| ½-½ | 38 | 1966 | Reykjavik | A55 Old Indian, Main line |
| 7. J Kristinsson vs G Sigurjonsson |
| 1-0 | 70 | 1966 | Reykjavik | D91 Grunfeld, 5.Bg5 |
| 8. G Sigurjonsson vs F Thorbergsson |
| 0-1 | 40 | 1966 | Reykjavik | C02 French, Advance |
| 9. J Halfdanarson vs G Sigurjonsson |
| ½-½ | 16 | 1966 | Reykjavik | E46 Nimzo-Indian |
| 10. G Sigurjonsson vs R G Wade |
| ½-½ | 23 | 1966 | Reykjavik | D34 Queen's Gambit Declined, Tarrasch |
| 11. G Kieninger vs G Sigurjonsson |
| ½-½ | 34 | 1966 | Reykjavik | C68 Ruy Lopez, Exchange |
| 12. G Sigurjonsson vs L Popov |
| 0-1 | 26 | 1966 | Havana Olympiad Final-A | B28 Sicilian, O'Kelly Variation |
| 13. G Sigurjonsson vs W Addison |
| 0-1 | 39 | 1966 | Havana Olympiad Final-A | B56 Sicilian |
| 14. G Sigurjonsson vs E Franco Raymundo |
| ½-½ | 53 | 1966 | Havana Olympiad Final-A | B43 Sicilian, Kan, 5.Nc3 |
| 15. D Drimer vs G Sigurjonsson |
 | 0-1 | 36 | 1966 | Havana Olympiad Final-A | B83 Sicilian |
| 16. L Zinn vs G Sigurjonsson |
| 1-0 | 28 | 1966 | Havana Olympiad Final-A | B21 Sicilian, 2.f4 and 2.d4 |
| 17. G Sigurjonsson vs L Barczay |
| 0-1 | 33 | 1966 | Havana Olympiad Final-A | B95 Sicilian, Najdorf, 6...e6 |
| 18. N Kerins vs G Sigurjonsson |
| ½-½ | 19 | 1967 | World Student Team Championship Final-B | E84 King's Indian, Samisch, Panno Main line |
| 19. G Sigurjonsson vs J Boudy Bueno |
| 1-0 | 46 | 1967 | World Student Team Championship qual-5 | B32 Sicilian |
| 20. G Sigurjonsson vs L Gilden |
| 0-1 | 40 | 1967 | World Student Team Championship qual-5 | B97 Sicilian, Najdorf |
| 21. A S Segal vs G Sigurjonsson |
| 1-0 | 40 | 1967 | World Student Team Championship qual-5 | E77 King's Indian |
| 22. L Day vs G Sigurjonsson |
| 1-0 | 28 | 1967 | Wch U20 qual-A | B20 Sicilian |
| 23. F Thorbergsson vs G Sigurjonsson |
| 0-1 | 38 | 1968 | Fiske Memorial, Reykjavik | D47 Queen's Gambit Declined Semi-Slav |
| 24. G Sigurjonsson vs R Byrne |
| 0-1 | 36 | 1968 | Fiske Memorial, Reykjavik | B06 Robatsch |
| 25. A Fjeldsted vs G Sigurjonsson |
| ½-½ | 24 | 1968 | Fiske Memorial, Reykjavik | B09 Pirc, Austrian Attack |
Kibitzing
