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Westerhof, Siem

🇳🇱

FIDEFIDE 1095013· Male· Netherlands· Born in 2013

Follow Siem WesterhofTrack his monthly FIDE ratings, games, tournaments and more.

Siem Westerhof, a 13-year-old Dutch player, is rated 1585. He has slipped back 40 Elo over the past 12 months. 20 rated games in the past year (≈13/year long-term). Recent standard appearances include Jeugd Weekendtoernooi Twente 2026, 85e Noteboomtoernooi, and Dutch Team Competition - klasse 4 Round 7. Also played 1 blitz event (including OSBO Snelschaakkampioenschap 2026) recently. His peak of 1641 was reached at age 12 (Feb 2025).

At junior level, he reached #61 and #25 nationally in U14 and U12.

Current rating

1585

Standard

Rpd—·Blz1657

All-time high

1641

−56 pts below
Feb 2025 · age 12

Activity

12

games / yr avg. · ≈1/mo

20 past 12 mo · ≈2/mo
classical only
Moderately active

Signature stat

#152,146

#152,146 · players worldwide · of 216,808

Career timeline

8 entries
2026
61st Dutch U14 player
at age 13 · rated 1583
Feb 2026
2025
25th Dutch U12 player
at age 12 · rated 1641
Feb 2025
Best 12-month gain (+40 Elo)
1601 → 1641
Feb 2025
All-time peak 1641
at age 12 · −56 from today
Feb 2025
2024
Crossed 1600
at age 11
Jun 2024
Crossed 1500
at age 11
Jun 2024

Standard rating history

Last 12 months — activity & highlights

Best result
Dutch Open 2025 - Reserve C
perf 1690 (+85) · 4.5/7 · #12
Top opponent
vs Simon Van der Beek 1,696
Dutch Open 2025 - Reserve C · Jul 2025 · +5.1 Elo
Evolution
-40
1625 → 1585
Tournaments
10
43 games
Score
14.5/ 4333.7%
15W7D21L

Last 12 months — tournaments

10 events
EventDateScoreRankPerfΔ Elo
Jeugd Weekendtoernooi Twente 2026
Swiss
Feb 20262.5/4#31721+24.0
85e Noteboomtoernooi
Open Swiss
Feb 20261.5/1#3762470-15.2
Dutch Team Competition - klasse 4 Round 7
Team
Feb 20260/1#6381101-5.2
Tata Steel Chess 2026 - Weekendvierkampen
Round-Robin
Jan 20261/1#3092462+25.6
41. Internationales Boeblinger Open B
Open Swiss
Dec 20250/1#1531059-6.0
Worst Elo result: Schach Tirol Open 2025 Group C (-30.0 Elo, finished #23).

Rankings

/
Netherlands
#4,473
out of 4,901 players
Europe
#100,998
in continent
World
#152,130
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
...
4473🇳🇱Westerhof, Siem1,585
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
...
100998🇳🇱Westerhof, Siem1,585
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
...
152130🇳🇱Westerhof, Siem1,585