| 20 jun 2026 | Gretarsson, Helgi Ass 2412 | Olafsson, Helgi 2404 | 1-0 | E12 Defensa India de Dama: Miles Variation | Green Diamond Invitational 2026 | 65 | Ver |
| 20 jun 2026 | Hjartarson, Johann 2424 | Olafsson, Helgi 2404 | 1-0 | B92 Defensa Siciliana: Najdorf Variation, Opocensky Variation | Green Diamond Invitational 2026 | 44 | Ver |
| 20 jun 2026 | Johannsson, Orn Leo 2368 | Olafsson, Helgi 2404 | 1-0 | A40 Apertura de Peón de Dama: Modern Defense | Green Diamond Invitational 2026 | 46 | Ver |
| 20 jun 2026 | Olafsson, Helgi 2404 | Heimisson, Hilmir Freyr 2428 | ½-½ | A30 Apertura Inglesa: Symmetrical Variation | Green Diamond Invitational 2026 | 31 | Ver |
| 20 jun 2026 | Thorfinnsson, Bragi 2283 | Olafsson, Helgi 2404 | 1-0 | A45 Defensa India | Green Diamond Invitational 2026 | 53 | Ver |
| 20 jun 2026 | Olafsson, Helgi 2404 | Stefansson, Hannes 2445 | ½-½ | A13 Apertura Inglesa: Agincourt Defense | Green Diamond Invitational 2026 | 26 | Ver |
| 19 jun 2026 | Olafsson, Helgi 2404 | Thorfinnsson, Bjorn 2396 | 0-1 | D64 Gambito de Dama rehusado: Orthodox Defense, Rubinstein Attack | Green Diamond Invitational 2026 | 97 | Ver |
| 19 jun 2026 | Olafsson, Helgi 2404 | Stefansson, Vignir Vatnar 2610 | ½-½ | D37 Gambito de Dama rehusado: Barmen Variation | Green Diamond Invitational 2026 | 49 | Ver |
| 19 jun 2026 | Olafsson, Helgi 2404 | Ulfarsson, Magnus Orn 2313 | 1-0 | A30 Apertura Inglesa: Symmetrical Variation | Green Diamond Invitational 2026 | 51 | Ver |
| 28 abr 2026 | Olafsson, Helgi 2439 | Nunn, John D M 2514 | ½-½ | E60 Defensa India de Rey: Fianchetto Variation | FIDE World Senior Team Championships 2026 - Senior 65+ | 9 | Ver |
| 27 abr 2026 | Janovsky, Sergey 2496 | Olafsson, Helgi 2439 | ½-½ | B51 Defensa Siciliana: Moscow Variation | FIDE World Senior Team Championships 2026 - Senior 65+ | 73 | Ver |
| 26 abr 2026 | Olafsson, Helgi 2439 | Ftacnik, Lubomir 2417 | ½-½ | A30 Apertura Inglesa: Symmetrical Variation, Hedgehog Defense | FIDE World Senior Team Championships 2026 - Senior 65+ | 21 | Ver |
| 23 abr 2026 | Olafsson, Helgi 2439 | Heim, Sverre 2294 | ½-½ | A46 Defensa India: London System | FIDE World Senior Team Championships 2026 - Senior 65+ | 44 | Ver |
| 22 abr 2026 | Welling, Gerard 2214 | Olafsson, Helgi 2439 | 0-1 | D94 Defensa Grünfeld: Three Knights Variation, Burille Variation | FIDE World Senior Team Championships 2026 - Senior 65+ | 51 | Ver |
| 21 abr 2026 | Olafsson, Helgi 2439 | Garcia Palermo, Carlos Horacio 2394 | ½-½ | D63 Gambito de Dama rehusado: Orthodox Defense, Main Line | FIDE World Senior Team Championships 2026 - Senior 65+ | 24 | Ver |
| 20 abr 2026 | Stebbings, Anthony J 2233 | Olafsson, Helgi 2439 | 0-1 | D02 Apertura de Peón de Dama: Symmetrical Variation, Pseudo-Catalan | FIDE World Senior Team Championships 2026 - Senior 65+ | 35 | Ver |
| 18 abr 2026 | Vaisser, Anatoli 2412 | Olafsson, Helgi 2439 | 0-1 | E24 Defensa Nimzoindia: Sämisch Variation | FIDE World Senior Team Championships 2026 - Senior 65+ | 38 | Ver |
| 8 mar 2026 | Birkisson, Bardur Orn 2207 | Olafsson, Helgi 2447 | 1-0 | E12 Defensa India de Dama: Kasparov-Petrosian Variation, Classical Variation | Icelandic team chess championship premier league | 36 | Ver |
| 7 mar 2026 | Olafsson, Helgi 2447 | Jakubiec, Artur 2427 | ½-½ | E84 Defensa India de Rey: Sämisch Variation, Panno Main Line | Icelandic team chess championship premier league | 30 | Ver |
| 6 mar 2026 | Olafsson, Helgi 2447 | Laurusas, Tomas 2508 | ½-½ | D24 Gambito de Dama aceptado: Gunsberg Defense, Prianishenmo Gambit | Icelandic team chess championship premier league | 42 | Ver |