| Jun 6, 2026 | Birkisson | ½–½ | Birkisson | Skákþing Íslands - Áskorendaflokkur 2026 | Queen's Gambit Declined: Ragozin Defense | |
| Jun 5, 2026 | Birkisson | 1–0 | Oskarsson | Skákþing Íslands - Áskorendaflokkur 2026 | Queen's Gambit Declined | |
| Jun 4, 2026 | Jonsson | 0–1 | Birkisson | Skákþing Íslands - Áskorendaflokkur 2026 | French Defense: Classical Variation, Swiss Variation | |
| Jun 3, 2026 | Birkisson | 1–0 | Skarphedinsson | Skákþing Íslands - Áskorendaflokkur 2026 | Indian Defense: Budapest Defense | |
| May 31, 2026 | Birkisson | ½–½ | Thorsteinsson | Skákþing Íslands - Áskorendaflokkur 2026 | Grünfeld Defense: Russian Variation, Hungarian Variation | |
| May 30, 2026 | Davidsson | 0–1 | Birkisson | Skákþing Íslands - Áskorendaflokkur 2026 | French Defense: Advance Variation, Paulsen Attack | |
| May 9, 2026 | Heimisson | 1–0 | Birkisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Caro-Kann Defense: Exchange Variation | |
| May 8, 2026 | Birkisson | 1–0 | Ptacnikova | Landsliðsflokkur Íslandsmótsins í skák 2026 | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| May 6, 2026 | Birkisson | ½–½ | Birkisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | French Defense: Tarrasch Variation, Modern System | |
| May 5, 2026 | Birkisson | 0–1 | Ragnarsson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Queen's Gambit Declined: Harrwitz Attack, Main Line | |
| May 4, 2026 | Stefansson | 1–0 | Birkisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | English Opening: Symmetrical Variation, Four Knights Variation | |
| May 4, 2026 | Birkisson | ½–½ | Johannsson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Bogo-Indian Defense: Grünfeld Variation | |
| May 3, 2026 | Birkisson | 0–1 | Kjartansson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Queen's Gambit Declined: Three Knights Variation | |
| May 2, 2026 | Stefansson | * | Birkisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Queen's Gambit Declined: Barmen Variation | |
| May 1, 2026 | Birkisson | 1–0 | Thorfinnsson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation | |
| Mar 30, 2026 | Birkisson | 0–1 | Williams | Reykjavik Open 2026 | Dutch Defense: Raphael Variation | |
| Mar 27, 2026 | Tsolakidou | 1–0 | Birkisson | Reykjavik Open 2026 | Caro-Kann Defense: Exchange Variation | |
| Mar 26, 2026 | Birkisson | ½–½ | Kjartansson | Reykjavik Open 2026 | Grünfeld Defense | |
| Mar 26, 2026 | Garifullina | ½–½ | Birkisson | Reykjavik Open 2026 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Mar 19, 2026 | Stefansson | 1–0 | Birkisson | Kópavogur International Chess Tournament 2026 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Mar 18, 2026 | Birkisson | 0–1 | Santos Latasa | Kópavogur International Chess Tournament 2026 | King's Indian Defense: Makogonov Variation | |
| Mar 17, 2026 | Kazakouski | 1–0 | Birkisson | Kópavogur International Chess Tournament 2026 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Mar 15, 2026 | Birkisson | 0–1 | Ragnarsson | Kópavogur International Chess Tournament 2026 | Grünfeld Defense | |
| Mar 13, 2026 | Johannsson | 1–0 | Birkisson | Kópavogur International Chess Tournament 2026 | Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense | |
| Mar 13, 2026 | Birkisson | 1–0 | Heimisson | Kópavogur International Chess Tournament 2026 | Queen's Gambit Declined: Ragozin Defense | |
| Mar 11, 2026 | Domalchuk-Jonasson | 0–1 | Birkisson | Kópavogur International Chess Tournament 2026 | Catalan Opening: Closed | |
| Mar 10, 2026 | Birkisson | 0–1 | Pultinevicius | Kópavogur International Chess Tournament 2026 | Queen's Gambit Declined: Barmen Variation | |
| Mar 10, 2026 | Birkisson | 1–0 | Oleksiyenko | Kópavogur International Chess Tournament 2026 | Queen's Gambit Accepted | |
| Mar 8, 2026 | Birkisson | 1–0 | Olafsson | Icelandic team chess championship premier league | Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation | |
| Mar 7, 2026 | Stefansson | ½–½ | Birkisson | Icelandic team chess championship premier league | Zukertort Opening | |
| Mar 7, 2026 | Sulypa | ½–½ | Birkisson | Icelandic team chess championship premier league | Queen's Gambit Declined: Charousek Variation | |
| Mar 6, 2026 | Birkisson | 1–0 | O`Donnell | Icelandic team chess championship premier league | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| Mar 5, 2026 | Laurusas | 1–0 | Birkisson | Icelandic team chess championship premier league | English Opening: King's English Variation, Four Knights Variation, Korchnoi Line | |
| Feb 6, 2026 | Heidarsson | 0–1 | Birkisson | Skákþing Reykjavíkur 2026 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Feb 1, 2026 | Birkisson | 1–0 | Eliasson | Skákþing Reykjavíkur 2026 | Lion Defense: Lion's Jaw | |
| Jan 28, 2026 | Halldorsson | 1–0 | Birkisson | Skákþing Reykjavíkur 2026 | Catalan Opening: Closed | |
| Jan 25, 2026 | Birkisson | 1–0 | Johannsson | Skákþing Reykjavíkur 2026 | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Jan 21, 2026 | Olafsson | 0–1 | Birkisson | Skákþing Reykjavíkur 2026 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 18, 2026 | Birkisson | 0–1 | Ragnarsson | Skákþing Reykjavíkur 2026 | Queen's Gambit Declined | |
| Jan 11, 2026 | Birkisson | 1–0 | Gudnyjarson | Skákþing Reykjavíkur 2026 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jan 7, 2026 | Loftsson | ½–½ | Birkisson | Skákþing Reykjavíkur 2026 | Catalan Opening: Open Defense | |
| Jan 7, 2026 | Tran | 0–1 | Birkisson | Skakthing 2026 | Catalan Opening: Closed | |
| Dec 7, 2025 | Birkisson | 0–1 | Thorhallsson | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | Sicilian Defense: Moscow Variation | |
| Dec 4, 2025 | Thorfinnsson | 1–0 | Birkisson | Icelandic team chess championship premier league | Queen's Indian Accelerated | |
| Nov 16, 2025 | Thorfinnsson | 1–0 | Birkisson | Icelandic team chess championship premier league | Alekhine Defense: Sämisch Attack | |
| Nov 15, 2025 | Birkisson | 0–1 | Danielsen | Icelandic team chess championship premier league | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Nov 15, 2025 | Birkisson | 1–0 | Skarphedinsson | Icelandic team chess championship premier league | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Nov 14, 2025 | Thorarinsson | ½–½ | Birkisson | Icelandic team chess championship premier league | English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto | |
| Sep 12, 2025 | Thorsteinsson | ½–½ | Birkisson | Haustmot TR 2025 | Slav Defense: Quiet Variation, Schallopp Defense | |
| Sep 10, 2025 | Birkisson | 0–1 | Johannesson | Haustmot TR 2025 | French Defense: Tarrasch Variation, Eliskases Variation | |
| Sep 3, 2025 | Omarsson | 0–1 | Birkisson | Haustmot TR 2025 | Queen's Gambit Accepted: Janowski-Larsen Variation | |
| Sep 3, 2025 | Stefansson | ½–½ | Birkisson | Haustmot TR 2025 | English Opening: King's English, Mazedonisch | |
| Sep 3, 2025 | Birkisson | 0–1 | Thorfinnsson | Haustmot TR 2025 | Benko Gambit Accepted: Modern Variation | |
| Sep 3, 2025 | Omarsson | 0–1 | Birkisson | Haustmot TR 2025 | Queen's Gambit Declined: Three Knights Variation | |
| Sep 3, 2025 | Birkisson | ½–½ | Ptacnikova | Haustmot TR 2025 | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| Sep 3, 2025 | Birkisson | ½–½ | Birkisson | Haustmot TR 2025 | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Sep 3, 2025 | Birkisson | ½–½ | Ragnarsson | Haustmot TR 2025 | Semi-Slav Defense: Botvinnik Variation, Lilienthal Variation | |
| Jul 19, 2025 | Jacobson | 1–0 | Birkisson | Round 1: Jacobson, Brandon - Birkisson, Bardur Orn | English Opening: Symmetrical Variation, Four Knights Variation | |
| Jul 8, 2025 | Girel | 1–0 | Birkisson | La Plagne 5th Edition July 2025 - Master tournament | Queen's Gambit Accepted: Central Variation, Modern Defense | |
| Jun 21, 2025 | Birkisson | 0–1 | Stefansson | Icelandic Open 2025 | Caro-Kann Defense: Endgame Offer | |
| Jun 20, 2025 | Ragnarsson | 0–1 | Birkisson | Icelandic Open 2025 | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Jun 20, 2025 | Birkisson | ½–½ | Birkisson | Icelandic Open 2025 | Italian Game: Classical Variation, Giuoco Pianissimo, with a6 | |
| Jun 19, 2025 | Birkisson | 1–0 | Bergsson | Icelandic Open 2025 | Caro-Kann Defense: Endgame Offer | |
| Jun 19, 2025 | Birkisson | 0–1 | Domalchuk-Jonasson | Icelandic Open 2025 | Scandinavian Defense: Main Line, Mieses Variation | |
| Jun 18, 2025 | Schitco | 1–0 | Birkisson | Icelandic Open 2025 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Jun 18, 2025 | Birkisson | ½–½ | Stefansson | Icelandic Open 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jun 17, 2025 | Thorfinnsson | 0–1 | Birkisson | Icelandic Open 2025 | Queen's Pawn Game: Levitsky Attack | |
| Jun 16, 2025 | Birkisson | 1–0 | Shestak | Icelandic Open 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Oct 25, 2024 | Birkisson | 1–0 | Bates | 39th European Chess Club Cup | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Oct 24, 2024 | Cvitan | ½–½ | Birkisson | 39th European Chess Club Cup | Slav Defense: Czech Variation, Classical System, Main Line | |
| Oct 23, 2024 | Lammers | 1–0 | Birkisson | 39th European Chess Club Cup | Slav Defense: Quiet Variation, Schallopp Defense | |
| Oct 21, 2024 | Birkisson | ½–½ | Colbow | 39th European Chess Club Cup | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Oct 20, 2024 | Lievens | 0–1 | Birkisson | 39th European Chess Club Cup | Caro-Kann Defense: Exchange Variation | |
| Jun 9, 2024 | Skarphedinsson | 0–1 | Birkisson | Round 9: Skarphedinsson, Ingvar Wu - Birkisson, Bardur Orn | Slav Defense: Modern Line | |
| Jun 8, 2024 | Birkisson | 1–0 | Ptacnikova | Round 8: Birkisson, Bardur Orn - Ptacnikova, Lenka | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jun 7, 2024 | Heidarsson | ½–½ | Birkisson | Round 7: Heidarsson, Arnar Milutin - Birkisson, Bardur Orn | Slav Defense | |
| Jun 6, 2024 | Birkisson | 1–0 | Jonsson | Round 6: Birkisson, Bardur Orn - Jonsson, Gauti Pall | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jun 5, 2024 | Birkisson | 1–0 | Birkisson | Round 5: Birkisson, Bardur Orn - Birkisson, Bjorn Holm | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Jun 4, 2024 | Thorisson | ½–½ | Birkisson | Round 4: Thorisson, Benedikt - Birkisson, Bardur Orn | Caro-Kann Defense: Two Knights Attack, Mindeno Variation | |
| Jun 3, 2024 | Birkisson | 1–0 | Omarsson | Round 3: Birkisson, Bardur Orn - Omarsson, Adam | Sicilian Defense: Moscow Variation | |
| Jun 2, 2024 | Hermannsson | 0–1 | Birkisson | Round 2: Hermannsson, Sigurbjorn - Birkisson, Bardur Orn | Alekhine Defense: Scandinavian Variation | |
| Jun 1, 2024 | Birkisson | ½–½ | Heidarsson | Round 1: Birkisson, Bardur Orn - Heidarsson, Mikael Bjarki | French Defense: Exchange Variation | |
| Mar 16, 2024 | Birkisson | 0–1 | Kunz | Reykjavik Open 2024 | Sicilian Defense: Kan Variation, Swiss Cheese Variation | |
| Oct 22, 2024 | Birkisson | 0–1 | Sokolovsky | Round 3: Birkisson, Bardur Orn - Sokolovsky, Yahli | Sicilian Defense: Moscow Variation | |
| Jul 9, 2023 | Zelbova | 0–1 | Birkisson | Ceske Budejovice Open A | Queen's Pawn Game: London System | |
| Jul 8, 2023 | Birkisson | ½–½ | Prazak | Ceske Budejovice Open A | Ruy Lopez: Berlin Defense | |
| Jul 7, 2023 | Kolka | ½–½ | Birkisson | Ceske Budejovice Open A | Sicilian Defense: Alapin Variation | |
| Jul 6, 2023 | Birkisson | 1–0 | Tsifanskaya | Ceske Budejovice Open A | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jul 5, 2023 | Dobrowolski | 1–0 | Birkisson | Ceske Budejovice Open A | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Jul 4, 2023 | Birkisson | 1–0 | Placer | Ceske Budejovice Open A | French Defense: Exchange Variation | |
| Jul 3, 2023 | Hurtuk | ½–½ | Birkisson | Ceske Budejovice Open A | Sicilian Defense: French Variation, Westerinen Attack | |
| Jul 2, 2023 | Birkisson | 1–0 | Fizerova | Ceske Budejovice Open A | Petrov's Defense: Classical Attack, Staunton Variation | |
| Jul 1, 2023 | Svacina | ½–½ | Birkisson | Ceske Budejovice Open A | Sicilian Defense: Taimanov Variation, Szén Variation | |
| Jun 15, 2023 | Birkisson | 0–1 | Harikrishnan.A.Ra | Teplice 2023 | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jun 14, 2023 | Agdelen | ½–½ | Birkisson | Teplice 2023 | English Opening: King's English Variation | |
| Jun 11, 2023 | Birkisson | 0–1 | Rasik | Teplice 2023 | Sicilian Defense: Scheveningen Variation, Classical Variation | |
| Apr 3, 2023 | Carlsson | 1–0 | Birkisson | Reykjavik Open 2023 | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| Apr 2, 2023 | Birkisson | ½–½ | Song | Reykjavik Open 2023 | Caro-Kann Defense: Exchange Variation | |
| Apr 1, 2023 | Birkisson | 1–0 | Gajewski | Reykjavik Open 2023 | Sicilian Defense: Moscow Variation | |
| Apr 1, 2023 | Braun | ½–½ | Birkisson | Reykjavik Open 2023 | Slav Defense: Czech Variation, Carlsbad Variation, Morozevich Variation | |