| Jun 20, 2026 | Heimisson | ½–½ | Hjartarson | Green Diamond Invitational 2026 | King's Indian Attack: Spassky Variation | |
| Jun 20, 2026 | Heimisson | ½–½ | Johannsson | Green Diamond Invitational 2026 | King's Indian Attack | |
| Jun 20, 2026 | Heimisson | 1–0 | Ulfarsson | Green Diamond Invitational 2026 | English Opening: Symmetrical Variation | |
| Jun 20, 2026 | Olafsson | ½–½ | Heimisson | Green Diamond Invitational 2026 | English Opening: Symmetrical Variation | |
| Jun 20, 2026 | Heimisson | 0–1 | Thorfinnsson | Green Diamond Invitational 2026 | King's Indian Attack: Double Fianchetto | |
| Jun 20, 2026 | Heimisson | 0–1 | Gretarsson | Green Diamond Invitational 2026 | Italian Game: Evans Gambit, Tartakower Attack | |
| Jun 19, 2026 | Thorfinnsson | 1–0 | Heimisson | Green Diamond Invitational 2026 | English Opening: Drill Variation | |
| Jun 19, 2026 | Stefansson | 1–0 | Heimisson | Green Diamond Invitational 2026 | English Opening: Neo-Catalan | |
| Jun 19, 2026 | Stefansson | 1–0 | Heimisson | Green Diamond Invitational 2026 | King's Indian Attack: Double Fianchetto | |
| May 15, 2026 | Derlich | * | Heimisson | Round 5: Derlich, Sarah Sima - Heimisson, Hilmir Freyr | ? | |
| May 14, 2026 | Heimisson | * | Lindberg | Round 4: Heimisson, Hilmir Freyr - Lindberg, Bengt | ? | |
| May 14, 2026 | De Blecourt | * | Heimisson | Round 3: De Blecourt, Sandra - Heimisson, Hilmir Freyr | ? | |
| May 14, 2026 | Heimisson | * | van den Brink | Round 2: Heimisson, Hilmir Freyr - van den Brink, Nienke | ? | |
| May 14, 2026 | Durrfeld | ½–½ | Heimisson | Round 1: Durrfeld, Sofie Bech - Heimisson, Hilmir Freyr | Indian Defense: Wade-Tartakower Defense | |
| May 14, 2026 | Heimisson | * | Jacobsen | Round 9: Heimisson, Hilmir Freyr - Jacobsen, Mikkel Manosri | ? | |
| May 9, 2026 | Heimisson | 1–0 | Birkisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Caro-Kann Defense: Exchange Variation | |
| May 8, 2026 | Birkisson | 0–1 | Heimisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Bogo-Indian Defense: Grünfeld Variation | |
| May 7, 2026 | Heimisson | 1–0 | Ragnarsson | Landsliðsflokkur Íslandsmótsins í skák 2026 | French Defense: Classical Variation | |
| May 6, 2026 | Stefansson | 1–0 | Heimisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | English Opening: Mikenas-Carls Variation | |
| May 5, 2026 | Heimisson | 1–0 | Kjartansson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Ruy Lopez: Closed, Martinez Variation | |
| May 4, 2026 | Stefansson | 0–1 | Heimisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | King's Indian Attack: Double Fianchetto | |
| May 3, 2026 | Heimisson | 1–0 | Thorfinnsson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Ruy Lopez: Marshall Attack, Modern Main Line | |
| May 2, 2026 | Johannsson | 0–1 | Heimisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | Indian Defense: Knights Variation | |
| May 1, 2026 | Ptacnikova | 0–1 | Heimisson | Landsliðsflokkur Íslandsmótsins í skák 2026 | English Opening: Agincourt Defense | |
| Apr 26, 2026 | Heidarsson | 0–1 | Heimisson | Boðsmót TR A-flokkur | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |
| Apr 26, 2026 | Heimisson | 1–0 | Jonsson | Boðsmót TR A-flokkur | Queen's Gambit Accepted: Gunsberg Defense | |
| Apr 25, 2026 | Heimisson | 1–0 | Omarsson | Boðsmót TR A-flokkur | Pirc Defense | |
| Apr 25, 2026 | Hallmundarson | 0–1 | Heimisson | Boðsmót TR A-flokkur | Slav Defense: Czech Variation, Dutch Variation | |
| Apr 24, 2026 | Heimisson | 1–0 | Birkisson | Boðsmót TR A-flokkur | Ruy Lopez: Closed, Martinez Variation | |
| Apr 19, 2026 | Nguyen | 0–1 | Heimisson | EIIC 2026 | Slav Defense: Modern Line | |
| Apr 18, 2026 | Heimisson | ½–½ | Kovalskyi | EIIC 2026 | Queen's Gambit Declined: Semi-Tarrasch Defense | |
| Apr 16, 2026 | Agdelen | 1–0 | Heimisson | EICC 2026 | Petrov's Defense: Classical Attack | |
| Apr 15, 2026 | Heimisson | 1–0 | Palamarchuk | EIIC 2026 | Philidor Defense: Hanham Variation | |
| Apr 14, 2026 | Jakubowski | 1–0 | Heimisson | EICC 2026 | Scotch Game: Potter Variation | |
| Apr 13, 2026 | Heimisson | ½–½ | Piliposyan | EICC 2026 | French Defense: Exchange Variation | |
| Apr 12, 2026 | Sprzeczka | 0–1 | Heimisson | EIIC 2026 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Apr 10, 2026 | Heimisson | 0–1 | Aizenberg | EICC 2026 | Queen's Gambit Declined: Ragozin Defense | |
| Apr 9, 2026 | Omarsson | 0–1 | Heimisson | EIIC 2026 | Tarrasch Defense | |
| Apr 8, 2026 | Heimisson | 1–0 | Gikas | EIIC 2026 | Alekhine Defense: Four Pawns Attack, Main Line | |
| Apr 7, 2026 | Donchenko | 1–0 | Heimisson | EICC 2026 | Semi-Slav Defense: Main Line | |
| Mar 19, 2026 | Santos Latasa | 1–0 | Heimisson | Kópavogur International Chess Tournament 2026 | French Defense: Hecht-Reefschläger Variation | |
| Mar 18, 2026 | Heimisson | 0–1 | Kazakouski | Kópavogur International Chess Tournament 2026 | King's Indian Attack: Double Fianchetto | |
| Mar 17, 2026 | Ragnarsson | 1–0 | Heimisson | Kópavogur International Chess Tournament 2026 | Indian Defense: Accelerated London System | |
| Mar 15, 2026 | Heimisson | 0–1 | Johannsson | Kópavogur International Chess Tournament 2026 | Sicilian Defense: Moscow Variation, Main Line | |
| Mar 13, 2026 | Birkisson | 1–0 | Heimisson | Kópavogur International Chess Tournament 2026 | Queen's Gambit Declined: Ragozin Defense | |
| Mar 12, 2026 | Heimisson | 1–0 | Domalchuk-Jonasson | Kópavogur International Chess Tournament 2026 | Sicilian Defense: Taimanov Variation | |
| Mar 11, 2026 | Pultinevicius | 1–0 | Heimisson | Kópavogur International Chess Tournament 2026 | English Opening: Neo-Catalan | |
| Mar 10, 2026 | Heimisson | 1–0 | Stefansson | Kópavogur International Chess Tournament 2026 | Sicilian Defense: Moscow Variation, Main Line | |
| Mar 10, 2026 | Heimisson | 0–1 | Oleksiyenko | Kópavogur International Chess Tournament 2026 | Sicilian Defense: Moscow Variation | |
| Mar 7, 2026 | Chigaev | 1–0 | Heimisson | Icelandic team chess championship premier league | French Defense: Tarrasch Variation | |
| Mar 7, 2026 | Kjartansson | ½–½ | Heimisson | Icelandic team chess championship premier league | English Opening: Anglo-Indian Defense, Hedgehog System | |
| Mar 6, 2026 | Heimisson | 1–0 | Harvey | Icelandic team chess championship premier league | Caro-Kann Defense: Tartakower Variation | |
| Mar 5, 2026 | Pultinevicius | 1–0 | Heimisson | Icelandic team chess championship premier league | English Opening: Mikenas-Carls Variation | |
| Jan 24, 2026 | Bergsson | 0–1 | Heimisson | Le Kock Mótaröðin - Úrslitakvöld | French Defense: Advance Variation, Kupreichik Variation | |
| Jan 24, 2026 | Heimisson | * | Gretarsson | Le Kock Mótaröðin - Úrslitakvöld | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Exchange Line | |
| Jan 24, 2026 | Heimisson | * | Johannsson | Le Kock Mótaröðin - Úrslitakvöld | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jan 24, 2026 | Jonsson | 0–1 | Heimisson | Le Kock Mótaröðin - Úrslitakvöld | French Defense: Advance Variation, Kupreichik Variation | |
| Jan 24, 2026 | Heimisson | * | Skarphedinsson | Le Kock Mótaröðin - Úrslitakvöld | Queen's Pawn Game | |
| Jan 24, 2026 | Thorfinnsson | * | Heimisson | Le Kock Mótaröðin - Úrslitakvöld | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Exchange Line | |
| Jan 24, 2026 | Heimisson | 0–1 | Thorfinnsson | Le Kock Mótaröðin - Úrslitakvöld | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Jan 24, 2026 | Stefansson | * | Heimisson | Le Kock Mótaröðin - Úrslitakvöld | French Defense: Exchange Variation | |
| Jan 24, 2026 | Heimisson | 1–0 | Bjornsson | Le Kock Mótaröðin - Úrslitakvöld | King's Indian Defense: Fianchetto Variation, Carlsbad Variation | |
| Jan 24, 2026 | Ragnarsson | 0–1 | Heimisson | Le Kock Mótaröðin - Úrslitakvöld | Queen's Pawn Game: London System | |
| Jan 24, 2026 | Lagerman | 0–1 | Heimisson | Le Kock Mótaröðin - Úrslitakvöld | ? | |
| Dec 30, 2025 | Heimisson | 0–1 | Kistrup | ØBRO x CXU yearly new years tournament 2025 | Trompowsky Attack | |
| Dec 30, 2025 | Gregor | 0–1 | Heimisson | ØBRO x CXU yearly new years tournament 2025 | French Defense: Advance Variation, Euwe Variation | |
| Dec 29, 2025 | Heimisson | 1–0 | Nilssen | ØBRO x CXU yearly new years tournament 2025 | French Defense: Advance Variation, Wade Variation | |
| Dec 28, 2025 | Pedersen | 0–1 | Heimisson | ØBRO x CXU yearly new years tournament 2025 | French Defense: Exchange Variation | |
| Dec 28, 2025 | Heimisson | 1–0 | Ahl | ØBRO x CXU yearly new years tournament 2025 | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Dec 27, 2025 | Rasmussen | 0–1 | Heimisson | ØBRO x CXU yearly new years tournament 2025 | English Opening: Drill Variation | |
| Dec 27, 2025 | Heimisson | 0–1 | Kirkebække | ØBRO x CXU yearly new years tournament 2025 | English Opening: Symmetrical Variation, Anti-Benoni Variation | |
| Dec 7, 2025 | Heimisson | 0–1 | Hjartarson | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | King's Indian Attack: Spassky Variation | |
| Dec 7, 2025 | Thorhallsson | 1–0 | Heimisson | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | French Defense: Paulsen Variation | |
| Dec 7, 2025 | Heimisson | 0–1 | Stefansson | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | Zukertort Opening: Reversed Grünfeld | |
| Dec 7, 2025 | Olafsson | 0–1 | Heimisson | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | King's Indian Attack: Double Fianchetto | |
| Dec 7, 2025 | Heimisson | ½–½ | Thorfinnsson | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Dec 7, 2025 | Johannsson | 0–1 | Heimisson | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | Slav Defense: Modern Line | |
| Dec 7, 2025 | Heimisson | 1–0 | Kjeld | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | King's Indian Defense: Fianchetto Variation, Delayed Fianchetto | |
| Dec 7, 2025 | Kjartansson | 0–1 | Heimisson | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Dec 4, 2025 | Heimisson | ½–½ | Bogdanov | Icelandic team chess championship premier league | King's Indian Attack: Symmetrical Defense | |
| Nov 16, 2025 | Grieve | 1–0 | Heimisson | Icelandic team chess championship premier league | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Nov 15, 2025 | Heimisson | 0–1 | Petrov | Icelandic team chess championship premier league | King's Indian Attack | |
| Nov 15, 2025 | Heimisson | ½–½ | Domalchuk-Jonasson | Icelandic team chess championship premier league | Queen's Indian Defense: Classical Variation, Polugaevsky Gambit | |
| Nov 14, 2025 | Harvey | 1–0 | Heimisson | Icelandic team chess championship premier league | Slav Indian | |
| Oct 25, 2025 | Heimisson | 0–1 | Georgescu | Round 7: Heimisson, Hilmir Freyr - Georgescu, Lena | English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense | |
| Oct 21, 2025 | Heimisson | ½–½ | Charnushevich | Round 3: Heimisson, Hilmir Freyr - Charnushevich, Aliaksei | King's Indian Attack: Yugoslav Variation | |
| Oct 20, 2025 | Juhasz | 0–1 | Heimisson | Round 2: Juhasz, Agoston - Heimisson, Hilmir Freyr | Italian Game: Giuoco Piano | |
| Jul 27, 2025 | Juhasz | 1–0 | Heimisson | SixDays Budapest July 2025 GM C | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 22, 2025 | Heimisson | 0–1 | Aveskulov | SixDays Budapest July 2025 GM C | Trompowsky Attack: Raptor Variation | |
| Jul 22, 2025 | Heimisson | 1–0 | Kalosha | SixDays Budapest July 2025 GM C | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jul 22, 2025 | Heimisson | 1–0 | Vaibhav Jayant Raut | SixDays Budapest July 2025 GM C | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Jul 22, 2025 | Heimisson | ½–½ | Pap | SixDays Budapest July 2025 GM C | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Jul 22, 2025 | Vivaan Vishal Shah | 1–0 | Heimisson | SixDays Budapest July 2025 GM C | French Defense: Paulsen Variation | |
| Jul 22, 2025 | Aczel | 1–0 | Heimisson | SixDays Budapest July 2025 GM C | Slav Defense: Quiet Variation, Schallopp Defense | |
| Jul 22, 2025 | Vanczak | ½–½ | Heimisson | SixDays Budapest July 2025 GM C | Ruy Lopez: Berlin Defense | |
| Jul 13, 2025 | Heimisson | ½–½ | Atwell | Round 9: Heimisson, Hilmir Freyr - Atwell, Rose | Queen's Gambit Declined: Charousek Variation | |
| Jul 12, 2025 | Moor | 1–0 | Heimisson | Round 7: Moor, Nathaniel Philip - Heimisson, Hilmir Freyr | Bogo-Indian Defense: Grünfeld Variation | |
| Jul 11, 2025 | Heimisson | ½–½ | Bilych | Round 6: Heimisson, Hilmir Freyr - Bilych, Oleksii | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 10, 2025 | Colville | 1–0 | Heimisson | Round 5: Colville, Julian - Heimisson, Hilmir Freyr | French Defense: Schlechter Variation | |
| Jul 10, 2025 | Heimisson | ½–½ | Movsziszian | Round 4: Heimisson, Hilmir Freyr - Movsziszian, Karen | King's Indian Defense: Fianchetto Variation, Classical Fianchetto | |