Format
OW
Olsen, William Fegth
🇳🇴FIDE 1571176· Male· Norway· Born in 2014
Follow William Fegth OlsenTrack his monthly FIDE ratings, games, tournaments and more.
William Fegth Olsen, a 12-year-old Norwegian player, is rated 1980 — his current career high and sitting in the top 1% of players worldwide under 12. He is climbing fast, having gained +239 Elo over the past 12 months. 41 rated games in the past year (≈27/year long-term). Recent standard appearances include Nordstrand GP Langsjakk 2026 M, Ostlandsserien div 2 B 2025-2026 R 6-7, and NM for barne og ungdomslag 2026 Junior. Also played 10 rapid (including Det apne NM i hurtigsjakk 2026 A) and 11 blitz events (including NTG Lyn-GP desember 2025) recently.
At junior level, he reached #1, #4 and #1 nationally in U12, U10 and U8.
Current rating
1980
Standard
Rpd2051·Blz2121
All-time high
1980
at best
May 2026 · age 12
May 2026 · age 12
Activity
30
games / yr avg. · ≈3/mo
41 past 12 mo · ≈3/mo
classical only
Active
classical only
Active
Signature stat
Top 1%
#211 · players worldwide under 12 · of 14,529
Career timeline
8 entries2026
All-time peak 1980
at age 12
May 2026
100 career games
at age 12
May 2026
1st Norwegian U12 player
at age 12 · rated 1972
Feb 2026
2025
Crossed 1800
at age 11
Sep 2025
Best 12-month gain (+563 Elo)
1160 → 1723
Feb 2025
2024
4th Norwegian U10 player
at age 10 · rated 1689
Dec 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
FIDE recal.
Activity & highlights
Evolution
+199
1781 → 1980
Tournaments
9
38 games
Score
26.5/ 3869.7%
21W11D6L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
7 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Apr 2026 | 1.5/4 | #21 | 2035 | +11.6 |
Team | Mar 2026 | 1/2 | #18 | 1879 | -9.6 |
Team | Feb 2026 | 5/5 | #4 | 2500 | +5.6 |
Team | Jan 2026 | 2/2 | #1 | 2702 | +35.6 |
Team | Dec 2025 | 0.5/1 | #10 | 1985 | +4.0 |
Open Swiss | Nov 2025 | 4.5/4 | #2 | 2366 | +8.4 |
Swiss | Nov 2025 | 2/4 | #13 | 2099 | +38.8 |
Most-Played Opponents
vsEspen Siben Yang
🇳🇴NOR·1798
+13 −5 =3
21 games·last met Oct 2025
View head-to-head →
vsTommy Matysiak
🇳🇴NOR·1736
+7 −1 =4
12 games·last met May 2026
View head-to-head →
vsTheodor Mohr
🇳🇴NOR·1931
+6 −4 =1
11 games·last met May 2026
View head-to-head →
vsHallvard Foss Bjornstad
🇳🇴NOR·2065
+0 −9 =2
11 games·last met Oct 2025
View head-to-head →
vsEmil Gagnaire
🇳🇴NOR·1721
+6 −4 =1
11 games·last met Jan 2025
View head-to-head →
Rankings
/
Norway
#299
out of 2,669 players
Europe
#22,759
in continent
World
#30,786
out of 400,000+
National ranking
Europe & World
Europe
World
Norway
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