62 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Kostov, Deyan Samuil | Bernadskiy, Vitaliy | 0-1 | A45 | Round 7: Kostov, Deyan Samuil - Bernadskiy, Vitaliy | 2025-06-12 |
| Kostov, Deyan Samuil | Aarav Sarbalia | 1-0 | A45 | Round 5: Kostov, Deyan Samuil - Aarav Sarbalia | 2025-06-10 |
| Kostov, Deyan Samuil | Safarli, Eltaj | 0-1 | A45 | Round 3: Kostov, Deyan Samuil - Safarli, Eltaj | 2025-06-09 |
| Kostov, Deyan Samuil | Darshan G | 1-0 | D35 | Round 1: Kostov, Deyan Samuil - Darshan G | 2025-06-08 |
| Kostov, Deyan Samuil | Baum, Jonasz | 0-1 | E49 | Round 9: Kostov, Deyan Samuil - Baum, Jonasz | 2025-04-27 |
| Kostov, Deyan Samuil | Iermito, Sebastian Dario | 1/2-1/2 | D25 | Round 8: Kostov, Deyan Samuil - Iermito, Sebastian Dario | 2025-04-26 |
| Kostov, Deyan Samuil | Matviishen, Viktor | 1/2-1/2 | D35 | Round 6: Kostov, Deyan Samuil - Matviishen, Viktor | 2025-04-25 |
| Kostov, Deyan Samuil | Cuenca Jimenez, Jose Fernando | 1-0 | D35 | Round 2: Kostov, Deyan Samuil - Cuenca Jimenez, Jose Fernando | 2025-04-23 |
| Kostov, Deyan Samuil | Ivic, Velimir | 0-1 | E71 | Round 2: Kostov, Deyan Samuil - Ivic, Velimir | 2025-03-15 |
| Kostov, Deyan Samuil | Bosboom, Manuel | 1-0 | E90 | Round 6: Kostov, Deyan Samuil - Bosboom, Manuel | 2025-03-15 |
| Kostov, Deyan Samuil | Plenca, Jadranko | 0-1 | E48 | 13. SPLIT OPEN: Å AHOVSKI FESTIVAL 2024 | 2024-09-06 |
| Kostov, Deyan Samuil | Priasmoro, Novendra | 1-0 | A48 | 13. SPLIT OPEN: Å AHOVSKI FESTIVAL 2024 | 2024-08-09 |
| Kostov, Deyan Samuil | Volodin, Aleksandr | 1/2-1/2 | D45 | 13. SPLIT OPEN | 2024-08-09 |
| Kostov, Deyan Samuil | Grgantov, Marin | 1-0 | E47 | 13. SPLIT OPEN: Å AHOVSKI FESTIVAL 2024 | 2024-08-04 |
| Kostov, Deyan Samuil | Day, Jonathan A | 1-0 | D45 | 13. SPLIT OPEN: Å AHOVSKI FESTIVAL 2024 | 2024-08-03 |
| Kostov, Deyan Samuil | Milov, Leonid | 1/2-1/2 | A80 | Grenke Chess Open 2024 | 2024-04-01 |
| Kostov, Deyan Samuil | Sharma Isha | 1-0 | E49 | Grenke Open | 2024-03-31 |
| Kostov, Deyan Samuil | Schlosser, Philipp | 1/2-1/2 | A80 | Grenke Chess Open 2024 | 2024-03-30 |
| Kostov, Deyan Samuil | Ronce, Nathan | 1-0 | A57 | 2. Open Hvar | 2023-10-21 |
| Kostov, Deyan Samuil | Ozen, Deniz | 1/2-1/2 | D45 | 2. Open Hvar | 2023-10-19 |
| Kostov, Deyan Samuil | Ivancic, Ivan | 1/2-1/2 | D45 | 2. Open Hvar | 2023-10-18 |
| Kostov, Deyan Samuil | Ramaj, Ergit | 0-1 | D43 | 2. Open Hvar | 2023-10-16 |
| Kostov, Deyan Samuil | Begic, Klara | 1-0 | D35 | 2. Open Hvar | 2023-10-15 |
| Kostov, Deyan Samuil | Kostov, Kiril | 1-0 | A40 | 12. Split Open 05.-13.08.2023. | 2023-08-13 |
| Kostov, Deyan Samuil | Kopylov, Daniel | 1/2-1/2 | D86 | 12. Split Open 05.-13.08.2023. | 2023-08-11 |
| Kostov, Deyan Samuil | Palac, Mladen | 0-1 | E49 | 12. Split Open 05.-13.08.2023. | 2023-08-08 |
| Kostov, Deyan Samuil | Sakic, Matija | 1/2-1/2 | A80 | 12. Split Open 05.-13.08.2023. | 2023-08-06 |
| Deyan Samuil Kostov | Mircea Talu | 1/2-1/2 | E48 | Round 7: Deyan Samuil Kostov - Mircea Talu | 2022-08-26 |
| Deyan Samuil Kostov | George Stoleriu | 1/2-1/2 | E48 | Round 4: Deyan Samuil Kostov - George Stoleriu | 2022-08-23 |
| Kostov, Deyan Samuil | Stoimenidis, Dimitrios | 1/2-1/2 | E47 | 30th OPEN Chess International Tournament | 2021-08-08 |