| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A Gudmundsson vs K O'Riordan |
| 1-0 | 42 | 1956 | Moscow Olympiad qual-3 | E66 King's Indian, Fianchetto, Yugoslav Panno |
| 2. A Gudmundsson vs C Jauregui |
| 0-1 | 76 | 1956 | Moscow Olympiad qual-3 | A95 Dutch, Stonewall |
| 3. A Gudmundsson vs W J Muhring |
 | 1-0 | 25 | 1956 | Moscow Olympiad Final-B | A97 Dutch, Ilyin-Genevsky |
| 4. A Gudmundsson vs Y Barda |
| ½-½ | 24 | 1956 | Moscow Olympiad Final-B | A04 Reti Opening |
| 5. A Gudmundsson vs I Niemela |
| 1-0 | 72 | 1956 | Moscow Olympiad Final-B | D62 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 6. I Johannsson vs A Gudmundsson |
| ½-½ | 14 | 1957 | Reykjavik | B73 Sicilian, Dragon, Classical |
| 7. A Gudmundsson vs Stahlberg |
| 0-1 | 30 | 1957 | Reykjavik | D26 Queen's Gambit Accepted |
| 8. G Palmason vs A Gudmundsson |
| 1-0 | 36 | 1957 | Reykjavik | E60 King's Indian Defense |
| 9. A Gudmundsson vs F Olafsson |
| 0-1 | 51 | 1957 | Reykjavik | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 10. B Johannesson vs A Gudmundsson |
| 1-0 | 48 | 1957 | Reykjavik | B08 Pirc, Classical |
| 11. A Gudmundsson vs G Agustsson |
| 1-0 | 43 | 1957 | Reykjavik | A13 English |
| 12. Pilnik vs A Gudmundsson |
| 1-0 | 24 | 1957 | Reykjavik | B70 Sicilian, Dragon Variation |
| 13. A Gudmundsson vs G Gudmundsson |
| 1-0 | 74 | 1957 | Reykjavik | A47 Queen's Indian |
| 14. G Gunnarsson vs A Gudmundsson |
| 1-0 | 32 | 1957 | Reykjavik | E80 King's Indian, Samisch Variation |
| 15. A Gudmundsson vs I Asmundsson |
| ½-½ | 17 | 1957 | Reykjavik | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 16. Benko vs A Gudmundsson |
| ½-½ | 90 | 1957 | Reykjavik | E80 King's Indian, Samisch Variation |
| 17. A Gudmundsson vs L Hallstrom |
| 0-1 | 27 | 1958 | Munich Olympiad qual-2 | D02 Queen's Pawn Game |
| 18. Y Kraidman vs A Gudmundsson |
| ½-½ | 55 | 1958 | Munich Olympiad qual-2 | E63 King's Indian, Fianchetto, Panno Variation |
| 19. M Farre vs A Gudmundsson |
| 1-0 | 26 | 1958 | Munich Olympiad qual-2 | B75 Sicilian, Dragon, Yugoslav Attack |
| 20. B Horberg vs A Gudmundsson |
| 0-1 | 65 | 1958 | Munich Olympiad Final-B | E94 King's Indian, Orthodox |
| 21. A Gudmundsson vs S Smiltiner |
| ½-½ | 14 | 1958 | Munich Olympiad Final-B | A17 English |
| 22. A Gudmundsson vs G Noradounghian |
| ½-½ | 38 | 1958 | Munich Olympiad Final-B | A17 English |
| 23. E Pedersen vs A Gudmundsson |
| 1-0 | 41 | 1958 | Munich Olympiad Final-B | B56 Sicilian |
| 24. J Kostro vs A Gudmundsson |
| 1-0 | 28 | 1958 | Munich Olympiad Final-B | B56 Sicilian |
| 25. A Gudmundsson vs H Kramer |
| ½-½ | 17 | 1958 | Munich Olympiad Final-B | A47 Queen's Indian |
Kibitzing
