| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. D Arngrimsson vs H Palsson |
| 1-0 | 40 |
2000 |
Reykjavik op19 | B00 Uncommon King's Pawn Opening |
| 2. A Schmitz vs D Arngrimsson |
| 0-1 | 50 |
2000 |
Reykjavik op19 | B22 Sicilian, Alapin |
| 3. D Arngrimsson vs H J Schubert |
| 1-0 | 43 |
2000 |
Reykjavik op19 | C45 Scotch Game |
| 4. S Bjarnason vs D Arngrimsson |
| 0-1 | 61 |
2001 |
Jonsson Mem Open | D66 Queen's Gambit Declined, Orthodox Defense, Bd3 line |
| 5. J Sigurdsson vs D Arngrimsson |
| 0-1 | 41 |
2004 |
Reykjavik Open | C24 Bishop's Opening |
| 6. D Arngrimsson vs T Thorhallsson |
| 1-0 | 25 |
2004 |
Reykjavik Open | B22 Sicilian, Alapin |
| 7. M Ardaman vs D Arngrimsson |
 | 0-1 | 36 |
2004 |
Reykjavik Open | A07 King's Indian Attack |
| 8. A Wilson vs D Arngrimsson |
| 0-1 | 40 |
2005 |
Hastings Chess Congress | C68 Ruy Lopez, Exchange |
| 9. M Rodshtein vs D Arngrimsson |
| 0-1 | 63 |
2005 |
BELFORT YWCC BU18 | D17 Queen's Gambit Declined Slav |
| 10. R Norinkeviciute vs D Arngrimsson |
| 0-1 | 51 |
2005 |
Hastings Chess Congress | C77 Ruy Lopez |
| 11. D Arngrimsson vs B Nagy |
| 1-0 | 21 |
2006 |
First Saturday July | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 12. G Pirisi vs D Arngrimsson |
| 0-1 | 30 |
2006 |
First Saturday July | C55 Two Knights Defense |
| 13. D Arngrimsson vs B Lengyel |
| 1-0 | 25 |
2006 |
First Saturday July | C55 Two Knights Defense |
| 14. N Donovan vs D Arngrimsson |
| 0-1 | 27 |
2006 |
Hastings Chess Congress | C24 Bishop's Opening |
| 15. S Ter-Sahakyan vs D Arngrimsson |
| 0-1 | 59 |
2007 |
World Junior Championship | C84 Ruy Lopez, Closed |
| 16. D Arngrimsson vs K R Arun |
| 1-0 | 49 |
2007 |
World Junior Championship | B06 Robatsch |
| 17. D Arngrimsson vs E Thorsteinsson |
| 1-0 | 21 |
2008 |
Reykjavik Open | C48 Four Knights |
| 18. A Stanoev vs D Arngrimsson |
| 0-1 | 11 |
2008 |
21st Belgrade Trophy | A07 King's Indian Attack |
| 19. D Arngrimsson vs W Wittmann |
| 1-0 | 34 |
2008 |
FSGM November | B88 Sicilian, Fischer-Sozin Attack |
| 20. D Arngrimsson vs T Cross |
| 1-0 | 29 |
2008 |
Reykjavik Open | B31 Sicilian, Rossolimo Variation |
| 21. D Arngrimsson vs Z Tasic |
| 1-0 | 37 |
2008 |
21st Belgrade Trophy | C00 French Defense |
| 22. D Mehmeti vs D Arngrimsson |
| 0-1 | 72 |
2008 |
Euro Club Cup | D00 Queen's Pawn Game |
| 23. A Thorsteinsson vs D Arngrimsson |
| 0-1 | 57 |
2008 |
Reykjavik Open | C44 King's Pawn Game |
| 24. D Arngrimsson vs M Knezevic |
| 1-0 | 39 |
2008 |
21st Belgrade Trophy | B10 Caro-Kann |
| 25. D Arngrimsson vs Bui Vinh |
| 1-0 | 31 |
2008 |
FSGM February | B22 Sicilian, Alapin |
