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Koster, Leon

Koster, Leon

FM🇳🇱

FIDEFIDE 1008021· Male· Netherlands· Born in 1970

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

Leon Koster, a 56-year-old Dutch FIDE Master, is rated 2270 — just 29 short of his peak of 2299 (Mar 2010, age 40) and sitting in the top 3% of Dutch players, and in the top 2% worldwide. He plays occasionally (7 games in the last 12 months) and had 2 career breaks: 74 months (2001–2007) and 67 months (2010–2015). Recent standard appearances include Dutch Team Competition - klasse 2 Round 9, Dutch Team Competition - klasse 2 Round 6, and Dutch Team Competition - klasse 2 Round 8.

Awarded FM in 2008 (age 38).

Current rating

2270

Standard

Rpd—·Blz—

All-time high

2299

−29 pts below
Mar 2010 · age 40

Activity

6

games / yr avg. · ≈1/mo

7 past 12 mo · ≈1/mo
classical only
Occasional

Signature stat

Top 3%

#165 · Dutch players · of 4,695

Career timeline

14 entries
2026
13th Dutch 55-60 player
at age 56 · rated 2275
Jan 2026
2025
20th Dutch 50-55 player
at age 55 · rated 2275
Dec 2025
2020
24th Dutch 45-50 player
at age 50 · rated 2286
Mar 2020
2011
20th Dutch 40-45 player
at age 41 · rated 2299
Jan 2011
2010
All-time peak 2299
at age 40 · −29 from today
Mar 2010
Inactive for 67 months
paused at 2299 → returned at 2271
Mar 2010

Standard rating history

Last 12 months — activity & highlights

Top opponent
vs Arres Oudshoorn 2,170
Dutch Team Competition - klasse 2 Round 1 · Sep 2025 · +7.2 Elo
Evolution
+6
2264 → 2270
Tournaments
7
7 games
Score
5/ 771.4%
4W2D1L

Last 12 months — tournaments

7 events
EventDateScoreRankPerfΔ Elo
Dutch Team Competition - klasse 2 Round 9
Team
Apr 20260.5/1#942230-1.2
Dutch Team Competition - klasse 2 Round 6
Team
Mar 20261/1#442769+3.0
Dutch Team Competition - klasse 2 Round 8
Team
Mar 20261/1#742615+1.6
Dutch Team Competition - klasse 2 Round 7
Team
Feb 20260/1#2101514-9.0
Dutch Team Competition - klasse 2 Round 3
Team
Nov 20251/1#242797+3.8

Rankings

/
Netherlands
#165
out of 4,901 players
Europe
#3,419
in continent
World
#5,070
out of 400,000+

National ranking

Europe & World

Europe
World
Netherlands
1
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,767
2
🇳🇱Van Foreest, JordenFollow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more.
2,735
3
🇳🇱Van Wely, LoekFollow Loek Van WelyTrack their monthly FIDE ratings, games, tournaments and more.
2,625
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
...
165🇳🇱Koster, Leon2,270
Europe
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,840
2
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,767
3
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,759
3
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,759
5
🇵🇱Duda, Jan-KrzysztofFollow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more.
2,739
6
🇳🇱Van Foreest, JordenFollow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more.
2,735
7
🇭🇺Rapport, RichardFollow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more.
2,729
8
🇫🇷Vachier-Lagrave, MaximeFollow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more.
2,717
8
🇦🇿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.
2,708
...
3419🇳🇱Koster, Leon2,270
World
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,840
2
🇺🇸Nakamura, HikaruFollow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more.
2,792
3
🇺🇸Caruana, FabianoFollow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more.
2,788
4
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,780
5
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,776
6
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,767
7
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,759
7
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,759
9
🇺🇸So, WesleyFollow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more.
2,754
10
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
...
5070🇳🇱Koster, Leon2,270