| Mar 18, 2024 | Kjartansson | 0–1 | Eriksson | Reykjavik Open 2024 | Semi-Slav Defense: Accelerated Move Order | |
| Nov 22, 2023 | Kjartansson | 0–1 | Asikainen | WYCC_2023_Open_U14 | King's Indian Defense: Orthodox Variation, Positional Defense | |
| Nov 21, 2023 | Lin | ½–½ | Kjartansson | WYCC_2023_Open_U14 | Scotch Game: Schmidt Variation | |
| Nov 13, 2023 | Kjartansson | 0–1 | Ermitsch | u14 | Nimzo-Indian Defense: Classical Variation | |
| Oct 1, 2022 | Tabaa | 1–0 | Kjartansson | Kvibergspelen 2022 | Sicilian Defense: Modern Variations | |
| Sep 30, 2022 | Kjartansson | 0–1 | Mitusov | Kvibergspelen 2022 | Queen's Gambit Declined: Tartakower Defense, Makogonov Exchange Variation | |
| Apr 7, 2022 | Kjartansson | 0–1 | Herrera | Kvika Reykjavik Open 2022 | King's Indian Defense: Normal Variation, Standard Development | |
| Apr 7, 2022 | Tripathi | 0–1 | Kjartansson | Kvika Reykjavik Open 2022 | Catalan Opening: Open Defense | |
| Sep 1, 2021 | Kjartansson | 0–1 | Petursson | European Individual Chess Championship 2021 - Reykjavik Open | Nimzo-Indian Defense: Classical Variation | |
| Aug 31, 2021 | Jonsson | 0–1 | Kjartansson | European Individual Chess Championship 2021 - Reykjavik Open | Benko Gambit Accepted: Pawn Return Variation | |
| Aug 30, 2021 | Kjartansson | 0–1 | Nielsen | European Individual Chess Championship 2021 - Reykjavik Open | Queen's Gambit Declined: Tarrasch Defense | |
| Aug 29, 2021 | Brynjarsson | 0–1 | Kjartansson | European Individual Chess Championship 2021 - Reykjavik Open | Queen's Gambit Declined: Vienna Variation | |
| Aug 28, 2021 | Kjartansson | 0–1 | Heidarsson | European Individual Chess Championship 2021 - Reykjavik Open | Nimzo-Indian Defense: Classical Variation | |
| Aug 27, 2021 | Birkisson | 1–0 | Kjartansson | European Individual Chess Championship 2021 - Reykjavik Open | Queen's Pawn Game: London System | |
| Aug 6, 2021 | Kjartansson | 0–1 | Nitin Vekhande | World Youth Cup 2021 O12-G16 - Open 12 | Queen's Gambit Declined: Exchange Variation, Reshevsky Variation | |
| Aug 6, 2021 | Kjartansson | 1–0 | Udipi | World Youth Cup 2021 O12-G16 - Open 12 | Queen's Gambit Declined: Exchange Variation | |
| Aug 6, 2021 | Kjartansson | 0–1 | Khoury | World Youth Cup 2021 O12-G16 - Open 12 | Benoni Defense: King's Pawn Line | |
| Aug 6, 2021 | Kjartansson | 0–1 | Potgieter | World Youth Cup 2021 O12-G16 - Open 12 | Nimzo-Indian Defense: Classical Variation, Berlin Variation | |
| Aug 6, 2021 | Kjartansson | 1–0 | Gogiashvili | World Youth Cup 2021 O12-G16 - Open 12 | Nimzo-Indian Defense: Classical Variation, Berlin Variation | |
| Aug 6, 2021 | Shariff | 0–1 | Kjartansson | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Closed, Traditional | |
| Aug 6, 2021 | Sahinoglu | 0–1 | Kjartansson | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Taimanov Variation, Normal Variation | |
| Aug 6, 2021 | Haug | 1–0 | Kjartansson | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Alapin Variation | |
| Aug 6, 2021 | Mezni | 1–0 | Kjartansson | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Taimanov Variation, Normal Variation | |
| Aug 6, 2021 | Hernandez Perez | 0–1 | Kjartansson | World Youth Cup 2021 O12-G16 - Open 12 | Queen's Pawn Game: Levitsky Attack | |
