| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. G Palmason vs I Asmundsson |
| ½-½ | 20 |
1957 |
Reykjavik | E60 King's Indian Defense |
| 2. Sehlstedt vs I Asmundsson |
| ½-½ | 34 |
1957 |
WchT U26 04th | E60 King's Indian Defense |
| 3. I Asmundsson vs E Davis |
| 1-0 | 33 |
1957 |
WchT U26 04th | E02 Catalan, Open, 5.Qa4 |
| 4. G H Gudmundsson vs I Asmundsson |
| 1-0 | 30 |
1957 |
Reykjavik | A48 King's Indian |
| 5. I Asmundsson vs B Johannesson |
| 1-0 | 58 |
1957 |
Reykjavik | E70 King's Indian |
| 6. I Asmundsson vs F Blatny |
| ½-½ | 67 |
1957 |
WchT U26 04th | E09 Catalan, Closed |
| 7. B Andersen vs I Asmundsson |
| 0-1 | 38 |
1957 |
WchT U26 04th | E80 King's Indian, Samisch Variation |
| 8. I Asmundsson vs I Johannsson |
| ½-½ | 13 |
1957 |
Reykjavik | C71 Ruy Lopez |
| 9. F Olafsson vs I Asmundsson |
| 1-0 | 36 |
1957 |
Reykjavik | E63 King's Indian, Fianchetto, Panno Variation |
| 10. Gurgenidze vs I Asmundsson |
| 1-0 | 38 |
1957 |
WchT U26 04th | B39 Sicilian, Accelerated Fianchetto, Breyer Variation |
| 11. I Asmundsson vs E Aaltio |
| 1-0 | 40 |
1957 |
WchT U26 04th | E00 Queen's Pawn Game |
| 12. Benites vs I Asmundsson |
| 0-1 | 39 |
1957 |
WchT U26 04th | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 13. I Asmundsson vs G Agustsson |
| ½-½ | 52 |
1957 |
Reykjavik | D25 Queen's Gambit Accepted |
| 14. Benko vs I Asmundsson |
| ½-½ | 41 |
1957 |
Reykjavik | C08 French, Tarrasch, Open, 4.ed ed |
| 15. N Padevsky vs I Asmundsson |
 | 1-0 | 16 |
1957 |
WchT U26 04th | C18 French, Winawer |
| 16. I Asmundsson vs Myagmarsuren |
| 1-0 | 41 |
1957 |
WchT U26 04th | E80 King's Indian, Samisch Variation |
| 17. L Navarovszky vs I Asmundsson |
| ½-½ | 21 |
1957 |
WchT U26 04th | A39 English, Symmetrical, Main line with d4 |
| 18. I Asmundsson vs Stahlberg |
| ½-½ | 69 |
1957 |
Reykjavik | A04 Reti Opening |
| 19. Pilnik vs I Asmundsson |
| 1-0 | 23 |
1957 |
Reykjavik | B34 Sicilian, Accelerated Fianchetto |
| 20. H Liebert vs I Asmundsson |
| ½-½ | 40 |
1957 |
WchT U26 04th | C08 French, Tarrasch, Open, 4.ed ed |
| 21. I Asmundsson vs Feuerstein |
| 0-1 | 41 |
1957 |
WchT U26 04th | A32 English, Symmetrical Variation |
| 22. A Gudmundsson vs I Asmundsson |
| ½-½ | 17 |
1957 |
Reykjavik | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 23. I Asmundsson vs G Gunnarsson |
| 1-0 | 28 |
1957 |
Reykjavik | A65 Benoni, 6.e4 |
| 24. Mednis vs I Asmundsson |
| ½-½ | 28 |
1958 |
WchT U26 prel-B 05th | C08 French, Tarrasch, Open, 4.ed ed |
| 25. I Asmundsson vs A Kolarov |
| 0-1 | 59 |
1958 |
WchT U26 prel-B 05th | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |