Format
SK
Siewertsen, Klaas
🇳🇱FIDE 40111300· Male· Netherlands· Born in 1947
Follow Klaas SiewertsenTrack his monthly FIDE ratings, games, tournaments and more.
Klaas Siewertsen, a 79-year-old Dutch player, is rated 1582 — his current career high. He plays occasionally (9 games in the last 12 months). Recent appearance: UniClass Amsterdam Science Park Chess Tournament 2025 - C.
Current rating
1582
Standard
Rpd—·Blz—
All-time high
1582
at best
Aug 2025 · age 78
Aug 2025 · age 78
Activity
10
games / yr avg. · ≈1/mo
9 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#153,883
#153,883 · players worldwide · of 218,279
Career timeline
5 entries2025
Crossed 1500
at age 78
Aug 2025
Crossed 1400
at age 78
Aug 2025
Crossed 1200
at age 78
Aug 2025
All-time peak 1582
at age 78
Aug 2025
First FIDE rating
1582 · at age 78
Aug 2025
Standard rating history
Peak
FIDE title
Threshold
First rated
Activity & highlights
Top opponent
Evolution
0
1582 → 1582
Tournaments
1
8 games
Score
3.5/ 843.8%
2W3D3L
Top 1 win
Top 2 losses
Last 12 months — tournaments
1 event| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | Jul 2025 | 3.5/5 | #42 | 1497 | 0.0 |
Rankings
/
Netherlands
#4,455
out of 4,909 players
Europe
#101,921
in continent
World
#153,868
out of 400,000+
National ranking
Europe & World
Europe
World
Netherlands
| 1 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
| 2 | 🇳🇱Follow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more. | 2,728 |
| 3 | 🇳🇱Follow Loek Van WelyTrack their monthly FIDE ratings, games, tournaments and more. | 2,636 |
| 4 | 🇳🇱Follow Erwin L'AmiTrack their monthly FIDE ratings, games, tournaments and more. | 2,592 |
| 5 | 🇳🇱Follow Casper SchoppenTrack their monthly FIDE ratings, games, tournaments and more. | 2,589 |
| 6 | 🇳🇱Follow Dimitri ReindermanTrack their monthly FIDE ratings, games, tournaments and more. | 2,574 |
| 7 | 🇳🇱Follow Ivan SokolovTrack their monthly FIDE ratings, games, tournaments and more. | 2,567 |
| 8 | 🇳🇱Follow Jan SmeetsTrack their monthly FIDE ratings, games, tournaments and more. | 2,564 |
| 9 | 🇳🇱Follow Benjamin BokTrack their monthly FIDE ratings, games, tournaments and more. | 2,560 |
| 10 | 🇳🇱Follow Erik Van den DoelTrack their monthly FIDE ratings, games, tournaments and more. | 2,549 |
| ... | ||
| 4455 | 1,582 | |
Europe
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,841 |
| 2 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 3 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
| 4 | 🇫🇷Follow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more. | 2,744 |
| 5 | 🇵🇱Follow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more. | 2,739 |
| 6 | 🇭🇺Follow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more. | 2,729 |
| 7 | 🇳🇱Follow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more. | 2,728 |
| 8 | 🇫🇷Follow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more. | 2,721 |
| 9 | 🇦🇿Follow Shakhriyar MamedyarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,717 |
| 10 | 🇹🇷Follow Yagiz Kaan ErdogmusTrack their monthly FIDE ratings, games, tournaments and more. | 2,713 |
| ... | ||
| 101921 | 1,582 | |
World
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,841 |
| 2 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 2 | 🇺🇸Follow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 4 | 🇺🇿Follow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more. | 2,777 |
| 4 | 🇺🇿Follow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,777 |
| 6 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 7 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
| 8 | 🇮🇳Follow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more. | 2,761 |
| 9 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| 9 | 🇨🇳Follow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| ... | ||
| 153868 | 1,582 | |