| Jun 7, 2026 | Leosson | 0–1 | Omarsson | Skákþing Íslands - Áskorendaflokkur 2026 | Queen's Gambit Accepted: Normal Variation | |
| Jun 6, 2026 | Omarsson | ½–½ | Omarsson | Skákþing Íslands - Áskorendaflokkur 2026 | Zukertort Opening: Reversed Grünfeld | |
| Jun 4, 2026 | Omarsson | ½–½ | Brynjarsson | Skákþing Íslands - Áskorendaflokkur 2026 | Nimzo-Indian Defense: Normal Variation | |
| Jun 3, 2026 | Davidsson | 1–0 | Omarsson | Skákþing Íslands - Áskorendaflokkur 2026 | Sicilian Defense: Old Sicilian | |
| Jun 1, 2026 | Omarsson | 1–0 | Birkisson | Skákþing Íslands - Áskorendaflokkur 2026 | Nimzo-Indian Defense: Normal Variation | |
| Apr 25, 2026 | Heimisson | 1–0 | Omarsson | Boðsmót TR A-flokkur | Pirc Defense | |
| Apr 24, 2026 | Jonsson | 0–1 | Omarsson | Boðsmót TR A-flokkur | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Apr 24, 2026 | Omarsson | ½–½ | Birkisson | Boðsmót TR A-flokkur | Nimzo-Indian Defense: Normal Variation | |
| Apr 24, 2026 | Omarsson | ½–½ | Heidarsson | Boðsmót TR A-flokkur | Nimzo-Indian Defense: Normal Variation | |
| Apr 24, 2026 | Hallmundarson | ½–½ | Omarsson | Boðsmót TR A-flokkur | English Opening: Symmetrical Variation, Three Knights Variation | |
| Apr 19, 2026 | Omarsson | ½–½ | Starosta | EIIC 2026 | Bogo-Indian Defense: Vitolins Variation | |
| Apr 18, 2026 | Mierins | 1–0 | Omarsson | EIIC 2026 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Apr 16, 2026 | Omarsson | ½–½ | Przybylski | EIIC 2026 | Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line | |
| Apr 15, 2026 | Maltezeanu | ½–½ | Omarsson | EIIC 2026 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Peresypkin's Sacrifice | |
| Apr 14, 2026 | Omarsson | 1–0 | Babinska | EICC 2026 | Slav Defense: Quiet Variation, Schallopp Defense | |
| Apr 13, 2026 | Gov | 1–0 | Omarsson | EIIC 2026 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Apr 12, 2026 | Omarsson | 1–0 | Krzeszewski | EICC 2026 | Grünfeld Defense: Exchange Variation | |
| Apr 10, 2026 | Saraci | 1–0 | Omarsson | EIIC 2026 | Sicilian Defense: Old Sicilian | |
| Apr 9, 2026 | Omarsson | 0–1 | Heimisson | EIIC 2026 | Tarrasch Defense | |
| Apr 8, 2026 | Rekuc | 0–1 | Omarsson | EIIC 2026 | King's Indian Defense: Petrosian Variation, Normal Defense | |
| Apr 7, 2026 | Omarsson | 0–1 | Govciyan | EIIC 2026 | Semi-Slav Defense: Accelerated Move Order | |
| Mar 25, 2026 | Omarsson | 0–1 | Garifullina | Reykjavik Open 2026 | Indian Defense: Normal Variation | |
| Feb 15, 2026 | Omarsson | 1–0 | Gudnyjarson | Nordisk Mesterskab gruppe C | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| Feb 14, 2026 | Jamil | 0–1 | Omarsson | Nordisk Mesterskab gruppe C | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Feb 13, 2026 | Omarsson | 1–0 | Reunanen | Nordisk Mesterskab gruppe C | Semi-Slav Defense: Chigorin Defense | |
| Feb 13, 2026 | Sandmann | 1–0 | Omarsson | Nordisk Mesterskab gruppe C | King's Indian Defense: Orthodox Variation | |
| Feb 12, 2026 | Omarsson | 1–0 | Jakobsen | Nordisk Mesterskab gruppe C | Queen's Gambit Declined: Three Knights Variation | |
| Feb 8, 2026 | Ral Lustig | 1–0 | Omarsson | Nordisk Mesterskab gruppe C | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 4, 2025 | Omarsson | ½–½ | Logason | Icelandic team chess championship premier league | King's Indian Defense: Four Pawns Attack | |
| Nov 16, 2025 | Omarsson | 0–1 | Bjornsson | Icelandic team chess championship premier league | King's Indian Defense: Four Pawns Attack | |
| Nov 15, 2025 | Gislason | 1–0 | Omarsson | Icelandic team chess championship premier league | Zukertort Opening: Nimzo-Larsen Variation | |
| Nov 15, 2025 | Briem | 1–0 | Omarsson | Icelandic team chess championship premier league | Zukertort Opening: Nimzo-Larsen Variation | |
| Nov 14, 2025 | Omarsson | 1–0 | Prudnikov | Icelandic team chess championship premier league | Benoni Defense: Old Benoni | |
| Oct 31, 2025 | Omarsson | 0–1 | Breuil | Round 3: Omarsson, Josef - Breuil, Virgile | Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | |
| Sep 12, 2025 | Omarsson | 0–1 | Birkisson | Haustmot TR 2025 | Nimzo-Indian Defense: Rubinstein System | |
| Sep 10, 2025 | Omarsson | ½–½ | Omarsson | Haustmot TR 2025 | English Opening: Symmetrical Variation | |
| Sep 3, 2025 | Omarsson | 0–1 | Johannesson | Haustmot TR 2025 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Sep 3, 2025 | Ragnarsson | ½–½ | Omarsson | Haustmot TR 2025 | East Indian Defense | |
| Sep 3, 2025 | Omarsson | 0–1 | Stefansson | Haustmot TR 2025 | English Defense | |
| Sep 3, 2025 | Omarsson | 0–1 | Birkisson | Haustmot TR 2025 | Queen's Gambit Declined: Three Knights Variation | |
| Sep 3, 2025 | Thorsteinsson | 1–0 | Omarsson | Haustmot TR 2025 | East Indian Defense | |
| Sep 3, 2025 | Omarsson | 0–1 | Thorfinnsson | Haustmot TR 2025 | Queen's Gambit Declined: Barmen Variation | |
| Sep 3, 2025 | Ptacnikova | 1–0 | Omarsson | Haustmot TR 2025 | King's Indian Defense: Fianchetto Variation, Panno Variation | |
| Jun 21, 2025 | Omarsson | ½–½ | Birkisson | Icelandic Open 2025 | Nimzo-Indian Defense: Normal Variation | |
| Jun 20, 2025 | Omarsson | 0–1 | Schitco | Icelandic Open 2025 | Nimzo-Indian Defense: Rubinstein System, Taimanov Variation | |
| Jun 20, 2025 | Kjartansson | ½–½ | Omarsson | Icelandic Open 2025 | King's Indian Defense: Normal Variation, Standard Development | |
| Jun 19, 2025 | Omarsson | ½–½ | Bjornsson | Icelandic Open 2025 | Nimzo-Indian Defense: Normal Variation | |
| Jun 19, 2025 | Thorfinnsson | 0–1 | Omarsson | Icelandic Open 2025 | Pirc Defense: Byrne Variation | |
| Jun 18, 2025 | Thorhallsson | 0–1 | Omarsson | Icelandic Open 2025 | King's Indian Defense: Sämisch Variation, Normal Defense | |
| Jun 18, 2025 | Thorfinnsson | 1–0 | Omarsson | Icelandic Open 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jun 17, 2025 | Omarsson | 1–0 | Bjornsson | Icelandic Open 2025 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 16, 2025 | Bjarnason | 0–1 | Omarsson | Icelandic Open 2025 | Bishop's Opening: Berlin Defense | |
| Apr 10, 2025 | Song | 1–0 | Omarsson | Reykjavik Open 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Oct 30, 2024 | Cieslak | 1–0 | Omarsson | Round 2: Cieslak, Patryk - Omarsson, Josef | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Aug 26, 2024 | Omarsson | 0–1 | Boulos | EYCC 2024 - O14 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 25, 2024 | Lehocz | ½–½ | Omarsson | EYCC 2024 - O14 | Nimzo-Larsen Attack: Indian Variation | |
| Aug 22, 2024 | Omarsson | ½–½ | Federer | EYCC 2024 - O14 | King's Indian Defense: Four Pawns Attack | |
| Aug 2, 2024 | Omarsson | 0–1 | Kuhn | Letni Praha 2024 | Semi-Slav Defense: Anti-Moscow Gambit | |
| Jun 17, 2024 | Omarsson | 0–1 | Heimisson | Round 1: Omarsson, Josef - Heimisson, Hilmir Freyr | Nimzo-Indian Defense: Normal Variation | |
| Mar 17, 2024 | Mannion | 1–0 | Omarsson | Reykjavik Open 2024 | Sicilian Defense: Lasker-Pelikan Variation | |
| Mar 16, 2024 | Omarsson | ½–½ | Maack | Reykjavik Open 2024 | Semi-Slav Defense: Accelerated Move Order | |
| Oct 16, 2023 | Omarsson | 0–1 | Ahmad | WCC 2023 - Open U12 | Nimzo-Indian Defense: Normal Variation | |
| Mar 31, 2023 | Karason | * | Omarsson | Reykjavik Open | ? | |
| Feb 23, 2023 | Abrahamsson | 1–0 | Omarsson | Krageroe Resort Chess 2023 | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Exchange Line | |
| Apr 7, 2022 | Omarsson | 1–0 | Lewis | Kvika Reykjavik Open 2022 | Indian Defense | |
| Apr 7, 2022 | Jonsson | 1–0 | Omarsson | Kvika Reykjavik Open 2022 | King's Indian Defense: Normal Variation | |
| Apr 6, 2022 | Jonsson | 1–0 | Omarsson | Kvika Reykjavik Open 2022 | King's Indian Defense | |
| Sep 2, 2021 | Halldorsson | 1–0 | Omarsson | European Individual Chess Championship 2021 - Reykjavik Open | Benoni Defense: Classical Variation, Czerniak Defense, Tal Line | |
| Sep 1, 2021 | Omarsson | 1–0 | Ingason | European Individual Chess Championship 2021 - Reykjavik Open | Queen's Pawn Game: Accelerated London System | |
| Aug 31, 2021 | Van Hoolandt | 1–0 | Omarsson | European Individual Chess Championship 2021 - Reykjavik Open | King's Indian Defense: Larsen Variation | |
| Aug 29, 2021 | Moller | 1–0 | Omarsson | European Individual Chess Championship 2021 - Reykjavik Open | King's Indian Defense: Orthodox Variation | |
| Aug 28, 2021 | Omarsson | 0–1 | Karason | European Individual Chess Championship 2021 - Reykjavik Open | Indian Defense | |
| Aug 27, 2021 | Mai | ½–½ | Omarsson | European Individual Chess Championship 2021 - Reykjavik Open | Pirc Defense: Austrian Attack, Unzicker Attack | |
| Aug 26, 2021 | Omarsson | 0–1 | Petkov | European Individual Chess Championship 2021 - Reykjavik Open | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| — | Omarsson | 0–1 | Walgren | Nordic Youth Chess Championship | Nimzo-Indian Defense: Leningrad Variation | |
| — | Omarsson | 0–1 | Frydendahl | Nordic Youth Chess Championship | King's Indian Defense: Four Pawns Attack | |
| — | Omarsson | 1–0 | Banerjee | Nordic Youth Chess Championship | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| — | Jamil | 0–1 | Omarsson | Nordic Youth Chess Championship | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| — | Jamil | 0–1 | Omarsson | Nordic Youth Chess Championship | Trompowsky Attack | |
| — | Myagmarsuren | 1–0 | Omarsson | Nordic Youth Chess Championship | Sicilian Defense | |