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KC

Koster, Chiel

CM🇳🇱

FIDEFIDE 1047990· Male· Netherlands· Born in 1998

Follow Chiel KosterTrack his monthly FIDE ratings, games, tournaments and more.

Chiel Koster, a 28-year-old Dutch Candidate Master, is rated 2211 — his current career high and sitting in the top 3% of players worldwide. He is progressing steadily with +70 Elo over the past 12 months. 20 rated games in the past year (≈10/year long-term). Recent standard appearances include Dutch Team Competition - klasse 2 Round 6, Dutch Team Competition - klasse 2 Round 8, and Dutch Team Competition - klasse 2 Round 5. He took a 15-month break between Jun 2016 and Oct 2017.

Awarded CM in 2026 (age 28). At junior level, he reached #24, #26 and #24 nationally in U20, U18 and U16.

Current rating

2211

Standard

Rpd—·Blz2015

All-time high

2211

at best
Apr 2026 · age 28

Activity

21

games / yr avg. · ≈2/mo

14 past 12 mo · ≈1/mo
classical only
Moderately active

Signature stat

Top 3%

#7,596 · players worldwide · of 218,279

Career timeline

15 entries
2026
69th Dutch 20-35 player
at age 28 · rated 2211
Apr 2026
All-time peak 2211
at age 28
Apr 2026
CM title awardedCM
at age 28
Jan 2026
Crossed 2200
at age 28
Jan 2026
2025
Best 12-month gain (+105 Elo)
2058 → 2163
Jul 2025
6-month rising streak
+53 Elo
Jul 2025

Standard rating history

Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19

Activity & highlights

Best result
17th BPB Limburg Open 2025 Group A
perf 2256 (+93) · 4/7 · #45
Top opponent
vs Maarten SolleveldGM 2,494
Dutch Team Competition - klasse 2 Round 3 · Nov 2025 · +6.9 Elo
Evolution
+48
2163 → 2211
Tournaments
8
14 games
Score
9.5/ 1467.9%
7W5D2L
Top 2 losses
1.[L]vsJoshua EckardtFM2,241·17th BPB Limburg Open 2025 Group A·R6·-7.8
2.[L]vsPascal BarzenFM2,348·17th BPB Limburg Open 2025 Group A·R3·-5.1

Last 12 months — tournaments

8 events
EventDateScoreRankPerfΔ Elo
Dutch Team Competition - klasse 2 Round 6
Team
Mar 20261/1#162686+2.8
Dutch Team Competition - klasse 2 Round 8
Team
Mar 20261/1#72912+7.6
Dutch Team Competition - klasse 2 Round 5
Team
Dec 20250.5/1#1182314+3.2
Dutch Team Competition - klasse 2 Round 4
Team
Nov 20250.5/1#882253+1.8
Dutch Team Competition - klasse 2 Round 3
Team
Nov 20250.5/1#1242494+7.2
Dutch Team Competition - klasse 2 Round 2
Team
Oct 20251/1#653159+14.8
Dutch Team Competition - klasse 2 Round 1
Team
Sep 20251/1#593004+11.2
17th BPB Limburg Open 2025 Group A
Open Swiss
Jun 20254/7#452256+22.2
Hot streak: 8 tournaments without losing Elo.

Rankings

/
Netherlands
#248
out of 4,909 players
Europe
#5,284
in continent
World
#7,596
out of 400,000+

National ranking

Europe & World

Europe
World
Netherlands
1
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,764
2
🇳🇱Van Foreest, JordenFollow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more.
2,728
3
🇳🇱Van Wely, LoekFollow Loek Van WelyTrack their monthly FIDE ratings, games, tournaments and more.
2,636
4
🇳🇱L'Ami, ErwinFollow Erwin L'AmiTrack their monthly FIDE ratings, games, tournaments and more.
2,592
5
🇳🇱Schoppen, CasperFollow Casper SchoppenTrack their monthly FIDE ratings, games, tournaments and more.
2,589
6
🇳🇱Reinderman, DimitriFollow Dimitri ReindermanTrack their monthly FIDE ratings, games, tournaments and more.
2,574
7
🇳🇱Sokolov, IvanFollow Ivan SokolovTrack their monthly FIDE ratings, games, tournaments and more.
2,567
8
🇳🇱Smeets, JanFollow Jan SmeetsTrack their monthly FIDE ratings, games, tournaments and more.
2,564
9
🇳🇱Bok, BenjaminFollow Benjamin BokTrack their monthly FIDE ratings, games, tournaments and more.
2,560
10
🇳🇱Van den Doel, ErikFollow Erik Van den DoelTrack their monthly FIDE ratings, games, tournaments and more.
2,549
...
248🇳🇱Koster, Chiel2,211
Europe
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,841
2
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,767
3
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,764
4
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,744
5
🇵🇱Duda, Jan-KrzysztofFollow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more.
2,739
6
🇭🇺Rapport, RichardFollow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more.
2,729
7
🇳🇱Van Foreest, JordenFollow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more.
2,728
8
🇫🇷Vachier-Lagrave, MaximeFollow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more.
2,721
9
🇦🇿Mamedyarov, ShakhriyarFollow Shakhriyar MamedyarovTrack their monthly FIDE ratings, games, tournaments and more.
2,717
10
🇹🇷Erdogmus, Yagiz KaanFollow Yagiz Kaan ErdogmusTrack their monthly FIDE ratings, games, tournaments and more.
2,713
...
5284🇳🇱Koster, Chiel2,211
World
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,841
2
🇺🇸Nakamura, HikaruFollow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more.
2,792
2
🇺🇸Caruana, FabianoFollow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more.
2,792
4
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
4
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
6
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,767
7
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,764
8
🇮🇳Erigaisi ArjunFollow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more.
2,761
9
🇺🇸So, WesleyFollow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more.
2,753
9
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
...
7596🇳🇱Koster, Chiel2,211