| 20 jun 2026 | Stefansson, Vignir Vatnar 2610 | Ulfarsson, Magnus Orn 2313 | 1-0 | E11 Defensa Bogoindia: Nimzowitsch Variation | Green Diamond Invitational 2026 | 36 | Ver |
| 20 jun 2026 | Ulfarsson, Magnus Orn 2313 | Stefansson, Hannes 2445 | 1-0 | B41 Defensa Siciliana: Kan Variation, Maróczy Bind, Réti Variation | Green Diamond Invitational 2026 | 57 | Ver |
| 20 jun 2026 | Johannsson, Orn Leo 2368 | Ulfarsson, Magnus Orn 2313 | ½-½ | A46 Defensa India: London System | Green Diamond Invitational 2026 | 64 | Ver |
| 20 jun 2026 | Ulfarsson, Magnus Orn 2313 | Gretarsson, Helgi Ass 2412 | 1-0 | B06 Defensa Moderna: Standard Defense | Green Diamond Invitational 2026 | 38 | Ver |
| 20 jun 2026 | Heimisson, Hilmir Freyr 2428 | Ulfarsson, Magnus Orn 2313 | 1-0 | A30 Apertura Inglesa: Symmetrical Variation | Green Diamond Invitational 2026 | 26 | Ver |
| 20 jun 2026 | Ulfarsson, Magnus Orn 2313 | Thorfinnsson, Bjorn 2396 | 0-1 | C70 Apertura Española (Ruy López): Morphy Defense, Schliemann Defense Deferred | Green Diamond Invitational 2026 | 27 | Ver |
| 20 jun 2026 | Ulfarsson, Magnus Orn 2313 | Hjartarson, Johann 2424 | 0-1 | B02 Defensa Alekhine: Normal Variation | Green Diamond Invitational 2026 | 42 | Ver |
| 20 jun 2026 | Thorfinnsson, Bragi 2283 | Ulfarsson, Magnus Orn 2313 | 0-1 | B20 Defensa Siciliana: Czerniak Attack | Green Diamond Invitational 2026 | 25 | Ver |
| 19 jun 2026 | Olafsson, Helgi 2404 | Ulfarsson, Magnus Orn 2313 | 1-0 | A30 Apertura Inglesa: Symmetrical Variation | Green Diamond Invitational 2026 | 51 | Ver |
| 7 mar 2026 | Ingvason, Johann 2145 | Ulfarsson, Magnus Orn 2354 | ½-½ | E00 Apertura Catalana | Icelandic team chess championship premier league | 23 | Ver |
| 14 nov 2025 | Ulfarsson, Magnus Orn 2357 | Chasin, Nico 2512 | 0-1 | B48 Defensa Siciliana: Taimanov Variation, Bastrikov Variation, English Attack | Icelandic team chess championship premier league | 36 | Ver |