| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. D Arngrimsson vs T Thorhallsson |
| 1-0 | 25 |
2004 |
Reykjavik Open | B22 Sicilian, Alapin |
| 27. G Kjartansson vs D Arngrimsson |
| ½-½ | 17 |
2004 |
Reykjavik Open | C68 Ruy Lopez, Exchange |
| 28. I Johannesson vs D Arngrimsson |
| ½-½ | 41 |
2004 |
Reykjavik Open | A11 English, Caro-Kann Defensive System |
| 29. D Arngrimsson vs Carlsen |
| 0-1 | 35 |
2004 |
Reykjavik Open | B22 Sicilian, Alapin |
| 30. D Arngrimsson vs E Safarli |
 | 0-1 | 40 |
2005 |
BELFORT YWCC BU18 | B22 Sicilian, Alapin |
| 31. D Arngrimsson vs P Bobras |
 | 0-1 | 22 |
2005 |
Hastings Chess Congress | B22 Sicilian, Alapin |
| 32. L Milman vs D Arngrimsson |
| 1-0 | 33 |
2005 |
BELFORT YWCC BU18 | C91 Ruy Lopez, Closed |
| 33. A Wilson vs D Arngrimsson |
| 0-1 | 40 |
2005 |
Hastings Chess Congress | C68 Ruy Lopez, Exchange |
| 34. R Wojtaszek vs D Arngrimsson |
| 1-0 | 54 |
2005 |
BELFORT YWCC BU18 | D94 Grunfeld |
| 35. D Arngrimsson vs Y Kuzubov |
| ½-½ | 30 |
2005 |
Hastings Chess Congress | B22 Sicilian, Alapin |
| 36. M Rodshtein vs D Arngrimsson |
| 0-1 | 63 |
2005 |
BELFORT YWCC BU18 | D17 Queen's Gambit Declined Slav |
| 37. D Arngrimsson vs G Meier |
| ½-½ | 62 |
2005 |
BELFORT YWCC BU18 | C10 French |
| 38. D Arngrimsson vs D Kjartansson |
 | ½-½ | 9 |
2005 |
Caissa IM August | D02 Queen's Pawn Game |
| 39. D Arngrimsson vs Deepan Chakkravarthy J |
| 0-1 | 35 |
2005 |
BELFORT YWCC BU18 | B33 Sicilian |
| 40. R Norinkeviciute vs D Arngrimsson |
 | 0-1 | 51 |
2005 |
Hastings Chess Congress | C77 Ruy Lopez |
| 41. D Arngrimsson vs D V Pedersen |
| 0-1 | 18 |
2006 |
First Saturday July | C57 Two Knights |
| 42. D Arngrimsson vs A Filippov |
| ½-½ | 53 |
2006 |
World Junior Championship | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 43. N Donovan vs D Arngrimsson |
| 0-1 | 27 |
2006 |
Hastings Chess Congress | C24 Bishop's Opening |
| 44. S Citak vs D Arngrimsson |
| ½-½ | 35 |
2006 |
First Saturday July | D12 Queen's Gambit Declined Slav |
| 45. M Rodshtein vs D Arngrimsson |
| 1-0 | 75 |
2006 |
World Junior Championship | D45 Queen's Gambit Declined Semi-Slav |
| 46. C Ward vs D Arngrimsson |
| 1-0 | 27 |
2006 |
XXII Reykjavik Open | D45 Queen's Gambit Declined Semi-Slav |
| 47. G Pirisi vs D Arngrimsson |
| 0-1 | 30 |
2006 |
First Saturday July | C55 Two Knights Defense |
| 48. S Shoker vs D Arngrimsson |
| ½-½ | 25 |
2006 |
World Junior Championship | A00 Uncommon Opening |
| 49. D Arngrimsson vs B Le Bailly |
| 0-1 | 40 |
2006 |
Hastings Chess Congress | C50 Giuoco Piano |
| 50. D Arngrimsson vs N A Adams |
| 0-1 | 60 |
2006 |
First Saturday July | B15 Caro-Kann |