Chiel Koster
Country
NED
Birth Year
1998
Gender
M
Title
FIDE ID
1047990
FIDE Rating
2201
FIDE Rating Graph
Games
| # | Date | Event | Site | Round | White | Black | Result | Moves | View |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025-06-08 | 17th BPB Limburg Open | Maastricht NED | 5.8 | Chiel Koster | Sascha Kurt | 1/2-1/2 | 22 | Open |
| 2 | 2025-06-07 | 17th BPB Limburg Open | Maastricht NED | 3.6 | Pascal Barzen | Chiel Koster | 1-0 | 40 | Open |
| 3 | 2025-05-18 | 15th WLC Weekender 2025 | Eindhoven NED | 6.4 | Noah Ritzerveld | Chiel Koster | 1/2-1/2 | 44 | Open |
| 4 | 2025-05-18 | 15th WLC Weekender 2025 | Eindhoven NED | 5.6 | Chiel Koster | Gachatur Kazarjan | 1/2-1/2 | 49 | Open |
| 5 | 2025-05-17 | 15th WLC Weekender 2025 | Eindhoven NED | 3.11 | Tom Vennix | Chiel Koster | 0-1 | 45 | Open |
| 6 | 2025-05-17 | 15th WLC Weekender 2025 | Eindhoven NED | 2.16 | Chiel Koster | Emma De Vries | 1-0 | 30 | Open |
| 7 | 2025-05-16 | 15th WLC Weekender 2025 | Eindhoven NED | 1.17 | Pim Blijlevens | Chiel Koster | 1/2-1/2 | 45 | Open |
| 8 | 2024-08-01 | Dutch Open 2024 | Velp NED | 9.15 | Chiel Koster | Tommy Grooten | 1/2-1/2 | 24 | Open |
| 9 | 2024-07-31 | Dutch Open 2024 | Velp NED | 8.15 | Jasper Zwirs | Chiel Koster | 1/2-1/2 | 25 | Open |
| 10 | 2024-07-30 | Dutch Open 2024 | Velp NED | 7.7 | Chiel Koster | Valentin Buckels | 0-1 | 76 | Open |
| 11 | 2024-07-29 | Dutch Open 2024 | Velp NED | 6.12 | Bernhard Stillger | Chiel Koster | 0-1 | 68 | Open |
| 12 | 2024-07-27 | Dutch Open 2024 | Velp NED | 5.21 | Chiel Koster | Manuel Smit | 1-0 | 42 | Open |
| 13 | 2024-07-26 | Dutch Open 2024 | Velp NED | 4.21 | Vadim Van Kuijk | Chiel Koster | 1/2-1/2 | 34 | Open |
| 14 | 2024-07-25 | Dutch Open 2024 | Velp NED | 3.13 | Chiel Koster | William Shakhverdian | 0-1 | 55 | Open |
| 15 | 2024-07-24 | Dutch Open 2024 | Velp NED | 2.14 | Noah Ritzerveld | Chiel Koster | 1/2-1/2 | 50 | Open |
| 16 | 2024-07-23 | Dutch Open 2024 | Velp NED | 1.14 | Chiel Koster | Herman Grooten | 1/2-1/2 | 66 | Open |
| 17 | 2024-06-02 | 14th WLC Weekender 2024 | Eindhoven NED | 6.5 | Chiel Koster | Sam Baselmans | 0-1 | 24 | Open |
| 18 | 2024-06-02 | 14th WLC Weekender 2024 | Eindhoven NED | 5.11 | Joshua Coronel | Chiel Koster | 0-1 | 51 | Open |
| 19 | 2024-06-01 | 14th WLC Weekender 2024 | Eindhoven NED | 4.6 | Chiel Koster | Thomas Kools | 1/2-1/2 | 15 | Open |
| 20 | 2024-06-01 | 14th WLC Weekender 2024 | Eindhoven NED | 3.11 | Mitchell Matthijssen | Chiel Koster | 0-1 | 37 | Open |
| 21 | 2024-06-01 | 14th WLC Weekender 2024 | Eindhoven NED | 2.2 | Chiel Koster | Thomas Beerdsen | 0-1 | 28 | Open |
| 22 | 2024-05-31 | 14th WLC Weekender 2024 | Eindhoven NED | 1.13 | Niels Van Happen | Chiel Koster | 0-1 | 47 | Open |
| 23 | 2023-08-02 | Dutch Open 2023 | Dieren NED | 8.19 | Johan Op den Dries | Chiel Koster | 1-0 | 51 | Open |
| 24 | 2023-08-01 | Dutch Open 2023 | Dieren NED | 7.13 | Chiel Koster | Tjark Vos | 0-1 | 52 | Open |
| 25 | 2023-07-31 | Dutch Open 2023 | Dieren NED | 6.13 | Rick Duijker | Chiel Koster | 1-0 | 43 | Open |
| 26 | 2023-07-29 | Dutch Open 2023 | Dieren NED | 5.16 | Chiel Koster | Jakob Weidemann | 1-0 | 45 | Open |
| 27 | 2023-07-28 | Dutch Open 2023 | Dieren NED | 4.19 | Sascha Kurt | Chiel Koster | 1/2-1/2 | 24 | Open |
| 28 | 2023-07-27 | Dutch Open 2023 | Dieren NED | 3.12 | Chiel Koster | Eelke De Boer | 0-1 | 30 | Open |
| 29 | 2023-07-26 | Dutch Open 2023 | Dieren NED | 2.19 | William Shakhverdian | Chiel Koster | 0-1 | 49 | Open |
| 30 | 2023-07-25 | Dutch Open 2023 | Dieren NED | 1.14 | Chiel Koster | Nick Maatman | 0-1 | 41 | Open |
| 31 | 2023-05-07 | 13th WLC Weekender 2023 | Eindhoven NED | 6.3 | Guus Bollen | Chiel Koster | 1/2-1/2 | 56 | Open |
| 32 | 2023-05-07 | 13th WLC Weekender 2023 | Eindhoven NED | 5.4 | Chiel Koster | Remco Sprangers | 1-0 | 33 | Open |
| 33 | 2023-05-06 | 13th WLC Weekender 2023 | Eindhoven NED | 4.1 | Thomas Beerdsen | Chiel Koster | 1-0 | 20 | Open |
| 34 | 2023-05-06 | 13th WLC Weekender 2023 | Eindhoven NED | 3.2 | Chiel Koster | Luuk Baselmans | 1-0 | 32 | Open |
| 35 | 2023-05-06 | 13th WLC Weekender 2023 | Eindhoven NED | 2.8 | Richard Koes | Chiel Koster | 0-1 | 27 | Open |
| 36 | 2022-05-15 | 12th WLC Weekender 2022 | Eindhoven NED | 6.5 | Chiel Koster | Sjoerd Van Roon | 1/2-1/2 | 57 | Open |
| 37 | 2022-05-15 | 12th WLC Weekender 2022 | Eindhoven NED | 5.1 | Leandro Slagboom | Chiel Koster | 0-1 | 42 | Open |
| 38 | 2022-05-14 | 12th WLC Weekender 2022 | Eindhoven NED | 4.12 | Chiel Koster | Rob Van Helvoort | 1-0 | 19 | Open |
| 39 | 2022-05-14 | 12th WLC Weekender 2022 | Eindhoven NED | 3.12 | Niklas van der Valk | Chiel Koster | 1/2-1/2 | 67 | Open |
| 40 | 2022-05-14 | 12th WLC Weekender 2022 | Eindhoven NED | 2.17 | Chiel Koster | Jasper Kools | 1/2-1/2 | 26 | Open |
| 41 | 2022-05-13 | 12th WLC Weekender 2022 | Eindhoven NED | 1.2 | Eline Roebers | Chiel Koster | 1/2-1/2 | 61 | Open |
| 42 | 2021-03-21 | 1st FIDE World Uni RapidC | Tornelo INT | 9.28 | Chiel Koster | Shanti Nur Abidah | 1-0 | 27 | Open |
| 43 | 2021-03-21 | 1st FIDE World Uni RapidC | Tornelo INT | 8.18 | Thanga Manickam M | Chiel Koster | 1-0 | 28 | Open |
| 44 | 2021-03-21 | 1st FIDE World Uni RapidC | Tornelo INT | 7.25 | Chiel Koster | Nadezhda Salah | 1-0 | 36 | Open |
| 45 | 2021-03-21 | 1st FIDE World Uni RapidC | Tornelo INT | 12.18 | Chiel Koster | Quentin Burri | 0-1 | 25 | Open |
| 46 | 2021-03-21 | 1st FIDE World Uni RapidC | Tornelo INT | 11.23 | 9859233600984814528 | Chiel Koster | 1/2-1/2 | 44 | Open |
| 47 | 2021-03-21 | 1st FIDE World Uni RapidC | Tornelo INT | 10.21 | Chiel Koster | 9253396794648604585 | 1/2-1/2 | 67 | Open |
| 48 | 2021-03-20 | 1st FIDE World Uni RapidC | Tornelo INT | 6.15 | Suren Gesyan | Chiel Koster | 1-0 | 34 | Open |
| 49 | 2021-03-20 | 1st FIDE World Uni RapidC | Tornelo INT | 5.14 | Chiel Koster | Mukherjee Arpita | 1/2-1/2 | 74 | Open |
| 50 | 2021-03-20 | 1st FIDE World Uni RapidC | Tornelo INT | 4.31 | 35052608 | Chiel Koster | 0-1 | 31 | Open |
| 51 | 2021-03-20 | 1st FIDE World Uni RapidC | Tornelo INT | 3.3 | Chiel Koster | 17825301599810573917 | 1-0 | 47 | Open |
| 52 | 2021-03-20 | 1st FIDE World Uni RapidC | Tornelo INT | 2.1 | Carlos Daniel Albornoz Cabrera | Chiel Koster | 1-0 | 75 | Open |
| 53 | 2021-03-20 | 1st FIDE World Uni RapidC | Tornelo INT | 1.42 | Chiel Koster | 11639153245512916516 | 1-0 | 30 | Open |
| 54 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 9.27 | Andrey P. Antonov | Chiel Koster | 0-1 | 36 | Open |
| 55 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 8.47 | Chiel Koster | Omar Obeid | 1-0 | 29 | Open |
| 56 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 7.25 | Raynner Amaro Alfonso | Chiel Koster | 1-0 | 52 | Open |
| 57 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 6.14 | Chiel Koster | Ladia Jirasek | 0-1 | 73 | Open |
| 58 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 5.28 | Joseph F. Bellissimo | Chiel Koster | 0-1 | 51 | Open |
| 59 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 4.52 | Chiel Koster | 12051095351795961846 | 1-0 | 24 | Open |
| 60 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 3.48 | 6354208117219318825 | Chiel Koster | 0-1 | 29 | Open |
| 61 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 2.7 | Chiel Koster | Tomas Laurusas | 0-1 | 48 | Open |
| 62 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 10.19 | Chiel Koster | Anna Styazhkina | 1-0 | 37 | Open |
| 63 | 2021-03-13 | 1st FIDE World Uni BlitzB | Tornelo INT | 1.74 | 5041571089665604585 | Chiel Koster | 0-1 | 27 | Open |
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