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FIDE ID 1047990 · born 1998 · last updated 5/12/2026
Standard
2211
Rapid
-
Blitz
2015
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Shortlist public Lichess and chess.com accounts for Koster via fuzzy name, country, and rating-band signals. Fastest path; works without sample games.
AI matching by sample game
Searching public databases for known games of Koster…
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Real tournament games of Chiel Koster from public sources. Select a game to replay it on the board.
All games
+7 =10 -7 · score 50% · 24 games
As White
+2 =5 -5 · score 38% · 12 games
As Black
+5 =5 -2 · score 63% · 12 games
Kurt,Sascha(2312)
Koster,Chiel(2141)½-½
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As White
| Event | Games | Dates |
|---|---|---|
| 17th BPB Limburg Open | 2 | 2025-06-07 to 2025-06-08 |
| 15th WLC Weekender 2025 | 5 | 2025-05-16 to 2025-05-18 |
| Dutch Open 2024 | 9 | 2024-07-23 to 2024-08-01 |
| 14th WLC Weekender 2024 | 6 | 2024-05-31 to 2024-06-02 |
| Dutch Open 2023 | 2 | 2023-08-01 to 2023-08-02 |
Prep report
Their repertoire vs yours
Once you have a candidate account, we cross-reference its opening tree against your imported games, surfacing the lines they play that you don’t know, the leaks in their repertoire you can punish, and the gaps in yours you’ll need to plug before the game.
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As Black
AI matching from found games
We already found 24 of Koster’s real games in public databases. No PGNs needed: one click shortlists public accounts with similar opening choices.
Sources: twic (24) - latest 6/8/2025
Helps match accounts whose display name is not written in Latin letters.
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