75 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Koster, Ramon | Dovgaliuk, Oleksandr | 0-1 | D25 | Meesterklasse 2026-2027 | 2026-09-22 |
| Koster, Ramon | Goncalves, Samuel Jesus P | 0-1 | D86 | Round 9: Koster, Ramon - Goncalves, Samuel Jesus P | 2026-08-29 |
| Koster, Ramon | Janzelj, Tim | 0-1 | D44 | Round 7: Koster, Ramon - Janzelj, Tim | 2026-08-27 |
| Koster, Ramon | Garcia Sobrino, David | 1-0 | A70 | Round 5: Koster, Ramon - Garcia Sobrino, David | 2026-08-25 |
| Koster, Ramon | Haug, Havard | 0-1 | E46 | Round 3: Koster, Ramon - Haug, Havard | 2026-08-23 |
| Koster, Ramon | Kamp, Aaron | 1-0 | A65 | Round 1: Koster, Ramon - Kamp, Aaron | 2026-08-22 |
| Koster, Ramon | Bourg, Nicolas | 1-0 | A81 | Round 8: Koster, Ramon - Bourg, Nicolas | 2026-02-14 |
| Koster, Ramon | Minde, Baptiste | 1-0 | A57 | Round 7: Koster, Ramon - Minde, Baptiste | 2026-02-13 |
| Koster, Ramon | Echcharbiny, Wissal | 1-0 | D11 | Round 1: Koster, Ramon - Echcharbiny, Wissal | 2026-02-11 |
| Koster, Ramon | Meftahi, Houssem Eddine | 0-1 | D35 | Round 3: Koster, Ramon - Meftahi, Houssem Eddine | 2026-02-11 |
| Koster, Ramon | Durand-Benmoussa, Roman | 0-1 | E73 | Round 5: Koster, Ramon - Durand-Benmoussa, Roman | 2026-02-11 |
| Koster, Ramon | Achour, Mohamed Anis | 1-0 | D31 | Round 7: Koster, Ramon - Achour, Mohamed Anis | 2026-02-11 |
| Koster, Ramon | Denninger, Guilhem | 0-1 | C50 | Round 9: Koster, Ramon - Denninger, Guilhem | 2026-02-11 |
| Koster, Ramon | Achour, Mohamed Anis | 1/2-1/2 | E49 | Round 4: Koster, Ramon - Achour, Mohamed Anis | 2026-02-10 |
| Koster, Ramon | Liu, Huaqi | 1-0 | A42 | Round 2: Koster, Ramon - Liu, Huaqi | 2026-02-09 |
| Koster, Ramon | Edwardss, Dylan | 1-0 | E43 | Round 9: Koster, Ramon - Edwardss, Dylan | 2025-12-29 |
| Koster, Ramon | Shyaam Nikhil P | 0-1 | E40 | Round 8: Koster, Ramon - Shyaam Nikhil P | 2025-12-28 |
| Koster, Ramon | Wempe, Joost | 1-0 | E49 | Round 6: Koster, Ramon - Wempe, Joost | 2025-12-26 |
| Koster, Ramon | Duijker, Rick | 1/2-1/2 | D21 | Round 4: Koster, Ramon - Duijker, Rick | 2025-12-24 |
| Koster, Ramon | De Boer, Eelke | 1/2-1/2 | A57 | Round 2: Koster, Ramon - De Boer, Eelke | 2025-12-22 |
| Koster, Ramon | Magold, Filip | 0-1 | A57 | Round 8: Koster, Ramon - Magold, Filip | 2025-12-02 |
| Koster, Ramon | Farberov, Maxim | 1-0 | E94 | Round 7: Koster, Ramon - Farberov, Maxim | 2025-12-01 |
| Koster, Ramon | Mesropyan, Hayk | 1-0 | D37 | Round 5: Koster, Ramon - Mesropyan, Hayk | 2025-11-30 |
| Koster, Ramon | Deepak Ambattu, Rithvik | 1/2-1/2 | D35 | Round 3: Koster, Ramon - Deepak Ambattu, Rithvik | 2025-11-28 |
| Koster, Ramon | Yuffa, Daniil | 0-1 | E46 | Round 1: Koster, Ramon - Yuffa, Daniil | 2025-11-27 |
| Koster, Ramon | Cernov, Henrik | 1/2-1/2 | E47 | Round 8: Koster, Ramon - Cernov, Henrik | 2024-12-29 |
| Koster, Ramon | De Winter, Arthur | 0-1 | A40 | Round 6: Koster, Ramon - De Winter, Arthur | 2024-12-27 |
| Koster, Ramon | Grooten, Herman | 1-0 | E44 | Round 4: Koster, Ramon - Grooten, Herman | 2024-12-24 |
| Koster, Ramon | Hummel, Paul | 1-0 | E47 | Round 2: Koster, Ramon - Hummel, Paul | 2024-12-22 |
| Koster, Ramon | Elgersma, Onno | 1-0 | D30 | Round 1: Koster, Ramon - Elgersma, Onno | 2024-09-14 |
| Koster, Ramon | Grochal, Joey | 1-0 | E47 | Round 3: Koster, Ramon - Grochal, Joey | 2024-09-14 |
| Koster, Ramon | Tikranian, Alik | 1-0 | A57 | Round 4: Koster, Ramon - Tikranian, Alik | 2024-09-14 |
| Koster, Ramon | Ratsma, Midas | 1-0 | D30 | Round 6: Koster, Ramon - Ratsma, Midas | 2024-09-14 |
| Koster, Ramon | Grooten, Tommy | 1/2-1/2 | A65 | Round 8: Koster, Ramon - Grooten, Tommy | 2024-09-14 |
| Koster, Ramon | Kazarjan, Gachatur | 1/2-1/2 | D30 | Round 10: Koster, Ramon - Kazarjan, Gachatur | 2024-09-14 |
| Koster, Ramon | Takahashi, Michael | 1/2-1/2 | E45 | Sala 2 - Masters | |
| Koster, Ramon | Bailet, Pierre | 1/2-1/2 | E73 | Maia Chess Open | |
| Koster, Ramon | Gomez Carreno, Martin | 1-0 | E43 | Sala 2 - Masters | |
| Koster, Ramon | Rodriguez Ferreiros, Andres | 1-0 | A40 | Sala 2 - Masters |