33 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Thorsteinsson, Thorsteinn | Aulin-Jansson, Joran | 1/2-1/2 | A06 | Round 5: Thorsteinsson, Thorsteinn - Aulin-Jansson, Joran | 2026-04-23 |
| Thorsteinsson, Thorsteinn | Granat, Russell G | 1/2-1/2 | D11 | Round 2: Thorsteinsson, Thorsteinn - Granat, Russell G | 2026-04-20 |
| Thorsteinsson, Thorsteinn | Osiecki, Stanislaw | 1-0 | A48 | Round 1: Thorsteinsson, Thorsteinn - Osiecki, Stanislaw | 2026-04-19 |
| Thorsteinsson, Thorsteinn | Kjartansson, David | 1/2-1/2 | A36 | Icelandic team chess championship premier league | 2026-03-07 |
| Thorsteinsson, Thorsteinn | Runarsson, Gunnar | 1-0 | E81 | Icelandic team chess championship premier league | 2025-11-15 |
| Thorsteinsson, Thorsteinn | Knaak, Rainer | 1/2-1/2 | A06 | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | 2025-10-03 |
| Thorsteinsson, Thorsteinn | Alquist, Erik | 1-0 | A65 | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | 2025-10-01 |
| Thorsteinsson, Thorsteinn | Suhogerlla, Xhevat | 1-0 | D37 | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | 2025-09-29 |
| Thorsteinsson, Thorsteinn | Birkisson, Bardur Orn | 1/2-1/2 | D12 | Haustmot TR 2025 | 2025-09-12 |
| Thorsteinsson, Thorsteinn | Ptacnikova, Lenka | 1/2-1/2 | E46 | Haustmot TR 2025 | 2025-09-03 |
| Thorsteinsson, Thorsteinn | Omarsson, Adam | 1/2-1/2 | E70 | Haustmot TR 2025 | 2025-09-03 |
| Thorsteinsson, Thorsteinn | Omarsson, Josef | 1-0 | A48 | Haustmot TR 2025 | 2025-09-03 |
| Thorsteinsson, Thorsteinn | Ragnarsson, Dagur | 0-1 | D02 | Haustmot TR 2025 | 2025-09-03 |
| Thorsteinsson, Thorsteinn | Kulaots, Kaido | 1/2-1/2 | A46 | Icelandic Team Championship | 2024-03-03 |
| Thorsteinsson, Thorsteinn | Arngrimsson, Dagur | 1/2-1/2 | A11 | Icelandic Team Championship | 2024-03-01 |
| Thorsteinsson, Thorsteinn | Kueng, Nicolas | 1-0 | A15 | European Individual Chess Championship 2021 - Reykjavik Open | 2021-08-29 |
| Thorsteinsson, Thorsteinn | Tummasarson, Flovin M. | 1-0 | D91 | European Individual Chess Championship 2021 - Reykjavik Open | 2021-08-27 |