| Nov 1, 2023 | Aleksandr Domalchuk-Jonasson | ½–½ | Vignir Vatnar Stefansson | Round 9: Aleksandr Domalchuk-Jonasson - Vignir Vatnar Stefansson | Queen's Gambit Accepted: Central Variation, Alekhine System | |
| Nov 1, 2023 | Vignir Vatnar Stefansson | 1–0 | Adam Omarsson | Round 8: Vignir Vatnar Stefansson - Adam Omarsson | Sicilian Defense: Alapin Variation | |
| Oct 31, 2023 | Stephan Briem | 1–0 | Vignir Vatnar Stefansson | Round 7: Stephan Briem - Vignir Vatnar Stefansson | Queen's Pawn Game | |
| Oct 30, 2023 | Vignir Vatnar Stefansson | 1–0 | Harald Ljung | Round 6: Vignir Vatnar Stefansson - Harald Ljung | Zukertort Opening | |
| Oct 30, 2023 | Axel Falkevall | ½–½ | Vignir Vatnar Stefansson | Round 5: Axel Falkevall - Vignir Vatnar Stefansson | Catalan Opening: Open Defense | |
| Oct 29, 2023 | Vignir Vatnar Stefansson | ½–½ | David Gavrilescu | Round 4: Vignir Vatnar Stefansson - David Gavrilescu | Bogo-Indian Defense: Retreat Variation | |
| Oct 28, 2023 | Victor Muntean | 0–1 | Vignir Vatnar Stefansson | Round 3: Victor Muntean - Vignir Vatnar Stefansson | Nimzowitsch Defense: Scandinavian Variation, Exchange Variation | |
| Oct 28, 2023 | Vignir Vatnar Stefansson | ½–½ | Hampus Sörensen | Round 2: Vignir Vatnar Stefansson - Hampus Sörensen | Catalan Opening: Closed | |
| Oct 27, 2023 | Vidar Grahn | ½–½ | Vignir Vatnar Stefansson | Round 1: Vidar Grahn - Vignir Vatnar Stefansson | Benoni Defense: Fianchetto Variation | |
| Feb 26, 2023 | Anna Zatonskih | 0–1 | Vignir Vatnar Stefansson | Round 9: Anna Zatonskih - Vignir Vatnar Stefansson | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Feb 25, 2023 | Vignir Vatnar Stefansson | ½–½ | Eric Rosen | Round 8: Vignir Vatnar Stefansson - Eric Rosen | Catalan Opening: Open Defense | |
| Feb 25, 2023 | Vignir Vatnar Stefansson | ½–½ | Marsel Efroimski | Round 7: Vignir Vatnar Stefansson - Marsel Efroimski | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Feb 24, 2023 | Vignir Vatnar Stefansson | ½–½ | Kjetil A Lie | Krageroe Resort Chess 2023 | Sicilian Defense: Alapin Variation | |
| Feb 24, 2023 | Valentin Dragnev | ½–½ | Vignir Vatnar Stefansson | Krageroe Resort Chess 2023 | French Defense: Paulsen Variation | |
| Feb 19, 2023 | Vignir Vatnar Stefansson | 1–0 | Konsta Kallunki | Nordic Youth Championship 2023 | Réti Opening: Réti Accepted | |
| Feb 19, 2023 | Joar Ostlund | 0–1 | Vignir Vatnar Stefansson | Nordic Youth Championship 2023 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Feb 18, 2023 | Vignir Vatnar Stefansson | 1–0 | Aleksandr Domalchuk-Jonasson | Nordic Youth Championship 2023 | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Feb 18, 2023 | Paulius Meskenas | 0–1 | Vignir Vatnar Stefansson | Nordic Youth Championship 2023 | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Feb 17, 2023 | Vignir Vatnar Stefansson | 1–0 | Mathias Lind Schouten | Nordic Youth Championship 2023 | English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense | |
| Feb 17, 2023 | Jon I Horni Nielsen | ½–½ | Vignir Vatnar Stefansson | Nordic Youth Championship 2023 | Sicilian Defense: Old Sicilian | |
| Aug 14, 2022 | Ralf Åkesson | 1–0 | Vignir Vatnar Stefansson | Round 9: Ralf Åkesson - Vignir Vatnar Stefansson | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Aug 13, 2022 | Vignir Vatnar Stefansson | ½–½ | Bengt Lindberg | Round 8: Vignir Vatnar Stefansson - Bengt Lindberg | Catalan Opening: Closed | |
| Aug 12, 2022 | Vignir Vatnar Stefansson | ½–½ | Li Min Peng | Round 7: Vignir Vatnar Stefansson - Li Min Peng | Sicilian Defense: Scheveningen Variation, Keres Attack | |
| Aug 12, 2022 | Savitha Shri B | 0–1 | Vignir Vatnar Stefansson | Round 6: Savitha Shri B - Vignir Vatnar Stefansson | Sicilian Defense: O'Kelly Variation, Maróczy Bind, Paulsen Line | |
| Aug 11, 2022 | Vignir Vatnar Stefansson | ½–½ | Hampus Sörensen | Round 5: Vignir Vatnar Stefansson - Hampus Sörensen | Ruy Lopez: Exchange Variation, Gligoric Variation | |
| Aug 10, 2022 | Vladyslav Larkin | ½–½ | Vignir Vatnar Stefansson | Round 4: Vladyslav Larkin - Vignir Vatnar Stefansson | French Defense: Tarrasch Variation, Eliskases Variation | |
| Aug 9, 2022 | Vignir Vatnar Stefansson | 1–0 | Jan Johansson | Round 3: Vignir Vatnar Stefansson - Jan Johansson | Pirc Defense | |
| Aug 9, 2022 | Jha Sriram | 0–1 | Vignir Vatnar Stefansson | Round 2: Jha Sriram - Vignir Vatnar Stefansson | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 8, 2022 | Vignir Vatnar Stefansson | 1–0 | Edvin Trost | Round 1: Vignir Vatnar Stefansson - Edvin Trost | Sicilian Defense: Alapin Variation, Stoltz Attack | |
| Nov 3, 2021 | Vignir Vatnar Stefansson | ½–½ | Aryan Gholami | Round 9: Vignir Vatnar Stefansson - Aryan Gholami | English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation | |
| Nov 3, 2021 | Siem van Dael | 0–1 | Vignir Vatnar Stefansson | Round 8: Siem van Dael - Vignir Vatnar Stefansson | Sicilian Defense: Open | |
| Nov 2, 2021 | Edvin Trost | 0–1 | Vignir Vatnar Stefansson | Round 7: Edvin Trost - Vignir Vatnar Stefansson | Catalan Opening: Closed | |
| Nov 1, 2021 | Vignir Vatnar Stefansson | ½–½ | Jung Min Seo | Round 6: Vignir Vatnar Stefansson - Jung Min Seo | Slav Defense: Exchange Variation | |
| Nov 1, 2021 | Vignir Vatnar Stefansson | * | Hilmir Freyr Heimisson | Round 5: Vignir Vatnar Stefansson - Hilmir Freyr Heimisson | Sicilian Defense: Keres Variation | |
| Oct 31, 2021 | Milton Pantzar | 0–1 | Vignir Vatnar Stefansson | Round 4: Milton Pantzar - Vignir Vatnar Stefansson | Benoni Defense: Benoni-Indian Defense, Kingside Move Order | |
| Oct 30, 2021 | Vignir Vatnar Stefansson | 1–0 | Jakub Kusa | Round 3: Vignir Vatnar Stefansson - Jakub Kusa | Catalan Opening: Open Defense | |
| Oct 30, 2021 | Jachym Nemec | ½–½ | Vignir Vatnar Stefansson | Round 2: Jachym Nemec - Vignir Vatnar Stefansson | Bogo-Indian Defense: Retreat Variation | |
| Oct 30, 2021 | Vignir Vatnar Stefansson | 1–0 | Alexander Nord | Round 1: Vignir Vatnar Stefansson - Alexander Nord | English Opening: Symmetrical Variation, Anti-Benoni Variation | |
| Aug 15, 2021 | Torsten Limbach | 0–1 | Vignir Vatnar Stefansson | Round 9: Torsten Limbach - Vignir Vatnar Stefansson | English Opening | |
| Aug 14, 2021 | Vignir Vatnar Stefansson | ½–½ | William Olsson | Round 8: Vignir Vatnar Stefansson - William Olsson | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Aug 13, 2021 | Thomas Ernst | 0–1 | Vignir Vatnar Stefansson | Round 7: Thomas Ernst - Vignir Vatnar Stefansson | Sicilian Defense: Open | |
| Aug 13, 2021 | Vignir Vatnar Stefansson | 1–0 | Alexander Hart | Round 6: Vignir Vatnar Stefansson - Alexander Hart | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Aug 12, 2021 | Vignir Vatnar Stefansson | ½–½ | Dagur Ragnarsson | Round 5: Vignir Vatnar Stefansson - Dagur Ragnarsson | Grünfeld Defense: Stockholm Variation | |
| Aug 11, 2021 | Vignir Vatnar Stefansson | 1–0 | Kim Nygren | Round 4: Vignir Vatnar Stefansson - Kim Nygren | Indian Defense: Anti-Nimzo-Indian | |
| Aug 10, 2021 | Leo Crevatin | 0–1 | Vignir Vatnar Stefansson | Round 3: Leo Crevatin - Vignir Vatnar Stefansson | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Aug 10, 2021 | Vignir Vatnar Stefansson | 0–1 | Konstantin Borsuk | Round 2: Vignir Vatnar Stefansson - Konstantin Borsuk | Zukertort Opening | |
| Aug 10, 2021 | Joakim Nilsson | 0–1 | Vignir Vatnar Stefansson | Round 1: Joakim Nilsson - Vignir Vatnar Stefansson | Rapport-Jobava System | |
| Oct 28, 2020 | Adam Frank | ½–½ | Vignir Vatnar Stefansson | Uppsala Young Champions - Round 9: Adam Frank - Vignir Vatnar Stefansson | Zukertort Opening: Dutch Variation | |
| Oct 28, 2020 | Vignir Vatnar Stefansson | 0–1 | Hampus Sorensen | Uppsala Young Champions - Round 8: Vignir Vatnar Stefansson - Hampus Sorensen | Slav Defense: Exchange Variation, Boor Attack | |
| Oct 27, 2020 | Milton Pantzar | 1–0 | Vignir Vatnar Stefansson | Uppsala Young Champions - Round 7: Milton Pantzar - Vignir Vatnar Stefansson | Kangaroo Defense: Keres Defense, Transpositional Variation | |