| Jul 6, 2025 | Petursson | 1–0 | Bednar | Open A | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Jul 5, 2025 | Zilavy | 1–0 | Petursson | Open A | French Defense: Winawer Variation, Delayed Exchange Variation | |
| Jul 4, 2025 | Petursson | ½–½ | Motuz | Open A | Dutch Defense: Classical Variation | |
| Jul 3, 2025 | Petursson | 1–0 | Gregor | Open A | Benoni Defense: Classical Variation | |
| Jul 2, 2025 | Nytra | 1–0 | Petursson | Open A | French Defense: Advance Variation, Lputian Variation | |
| Jul 1, 2025 | Petursson | 1–0 | Dudasko | Open A | King's Indian Defense: Sämisch Variation | |
| Jun 30, 2025 | Richterova | 1–0 | Petursson | Open A | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Jun 29, 2025 | Petursson | ½–½ | Deglmann | Open A | Horwitz Defense | |
| Jun 28, 2025 | Borecky | 0–1 | Petursson | Open A | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Jun 21, 2025 | Petursson | 0–1 | Thorhallsson | Icelandic Open 2025 | Pirc Defense: Classical Variation, Quiet System, Chigorin Line | |
| Jun 20, 2025 | Petursson | 0–1 | Stefansson | Icelandic Open 2025 | Catalan Opening | |
| Jun 20, 2025 | Oskarsson | ½–½ | Petursson | Icelandic Open 2025 | Nimzo-Indian Defense: Normal Variation | |
| Jun 19, 2025 | Gudmundsson | ½–½ | Petursson | Icelandic Open 2025 | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Jun 19, 2025 | Petursson | ½–½ | Thorisson | Icelandic Open 2025 | Grünfeld Defense: Three Knights Variation, Hungarian Variation | |
| Jun 18, 2025 | Petursson | 1–0 | Van Meter | Icelandic Open 2025 | Queen's Pawn Game: Colle System, Traditional Colle | |
| Jun 18, 2025 | Birkisson | 1–0 | Petursson | Icelandic Open 2025 | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Jun 17, 2025 | Petursson | ½–½ | Bergsson | Icelandic Open 2025 | King's Indian Defense: Exchange Variation | |
| Jun 16, 2025 | Erlendsson Weinert | 0–1 | Petursson | Icelandic Open 2025 | French Defense: Advance Variation, Paulsen Attack | |
| Jun 8, 2024 | Oskarsson | ½–½ | Petursson | Round 8: Oskarsson, Markus Orri - Petursson, Gudni | Queen's Gambit Declined: Charousek Variation | |
| Jun 7, 2024 | Petursson | ½–½ | Thorisson | Round 7: Petursson, Gudni - Thorisson, Benedikt | Queen's Pawn Game: Barry Attack, Grünfeld Variation | |
| Jun 5, 2024 | Ptacnikova | 1–0 | Petursson | Round 5: Ptacnikova, Lenka - Petursson, Gudni | Ruy Lopez: Exchange Variation, Keres Variation | |
| Oct 3, 2022 | Gavrilescu | 1–0 | Petursson | 37th European Club Cup | Petrov's Defense: Modern Attack, Center Variation | |
| Sep 24, 2021 | Blake | * | Petursson | 36th European Club Cup | ? | |
| Sep 22, 2021 | Jakobsen | 1–0 | Petursson | 36th European Club Cup | ? | |
| Sep 21, 2021 | Petursson | * | Miftari | 36th European Club Cup | ? | |
| Sep 20, 2021 | Sparwel | * | Petursson | 36th European Club Cup | ? | |
| Sep 19, 2021 | Petursson | * | Darnell | 36th European Club Cup | ? | |
| Sep 18, 2021 | Alonso Rosell | 1–0 | Petursson | 36th European Club Cup | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Sep 2, 2021 | Petursson | 0–1 | Lorscheid | European Individual Chess Championship 2021 - Reykjavik Open | King's Indian Defense: Fianchetto Variation, Larsen Defense | |
| Sep 1, 2021 | Kjartansson | 0–1 | Petursson | European Individual Chess Championship 2021 - Reykjavik Open | Nimzo-Indian Defense: Classical Variation | |
| Aug 31, 2021 | Petursson | 0–1 | Milikow | European Individual Chess Championship 2021 - Reykjavik Open | Catalan Opening | |
| Aug 30, 2021 | Ragnarsson | 0–1 | Petursson | European Individual Chess Championship 2021 - Reykjavik Open | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Aug 29, 2021 | Petursson | 0–1 | Vedder | European Individual Chess Championship 2021 - Reykjavik Open | Queen's Gambit Accepted: Old Variation | |
| Aug 28, 2021 | Gade | 0–1 | Petursson | European Individual Chess Championship 2021 - Reykjavik Open | Nimzo-Indian Defense | |
| Aug 27, 2021 | Petursson | 0–1 | Sousa | European Individual Chess Championship 2021 - Reykjavik Open | Grünfeld Defense: Russian Variation, Accelerated Variation | |
| Aug 26, 2021 | Basso | 1–0 | Petursson | European Individual Chess Championship 2021 - Reykjavik Open | Grünfeld Defense: Russian Variation, Accelerated Variation | |
| Feb 22, 2020 | Petursson | ½–½ | Birkisson | Krageroe Resort Chess 2020 | Slav Defense: Quiet Variation, Schallopp Defense | |
| Feb 19, 2020 | Petursson | 0–1 | Sriram | Krageroe Resort Chess 2020 | Modern Defense: Kotov Variation | |
| Feb 19, 2020 | Lie | 1–0 | Petursson | Krageroe Resort Chess 2020 | King's Indian Attack: Symmetrical Defense | |
