Koster, Chiel
Last game 2025
Rating
peak 2141 · latest 2141Games
63
Wins
26
Draws
19
Losses
18
Peak Elo
2141
56.3% score
As White
| B10 | Caro-Kann Defense | 3 | 16.7% |
| B90 | Sicilian Defense: Najdorf Variation, Adams Attack | 3 | 66.7% |
As Black
| B33 | Sicilian Defense: Lasker-Pelikan Variation | 5 | 70.0% |
| B20 | Sicilian Defense: Mengarini Variation | 2 | 75.0% |
| B31 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | 2 | 50.0% |
Recent games
| Koster, Chiel2141 | ½-½ | Kurt, Sascha2312 | 17th BPB Limburg Open | 2025 |
| Barzen, P2348 | 1-0 | Koster, Chiel2141 | 17th BPB Limburg Open | 2025 |
| Ritzerveld, Noah2272 | ½-½ | Koster, Chiel2123 | 15th WLC Weekender 2025 | 2025 |
| Koster, Chiel2123 | ½-½ | Kazarjan, Gachatur2211 | 15th WLC Weekender 2025 | 2025 |
| Vennix, Tom1971 | 0-1 | Koster, Chiel2123 | 15th WLC Weekender 2025 | 2025 |
| Koster, Chiel2123 | 1-0 | De Vries, Emma1995 | 15th WLC Weekender 2025 | 2025 |
| Blijlevens, P1890 | ½-½ | Koster, Chiel2123 | 15th WLC Weekender 2025 | 2025 |
| Koster, Chiel2058 | ½-½ | Grooten, Tommy2146 | Dutch Open 2024 | 2024 |
| Zwirs, Jasper2088 | ½-½ | Koster, Chiel2058 | Dutch Open 2024 | 2024 |
| Koster, Chiel2058 | 0-1 | Buckels, Valentin2478 | Dutch Open 2024 | 2024 |
| Stillger, B2263 | 0-1 | Koster, Chiel2058 | Dutch Open 2024 | 2024 |
| Koster, Chiel2058 | 1-0 | Smit, Manuel1969 | Dutch Open 2024 | 2024 |
| Van Kuijk, Vadim2131 | ½-½ | Koster, Chiel2058 | Dutch Open 2024 | 2024 |
| Koster, Chiel2058 | 0-1 | Shakhverdian, William2157 | Dutch Open 2024 | 2024 |
| Ritzerveld, Noah2181 | ½-½ | Koster, Chiel2058 | Dutch Open 2024 | 2024 |