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Rehnberg, Karl-Oskar

🇸🇪

FIDEFIDE 1781995· Male· Sweden· Born in 2008

Follow Karl-Oskar RehnbergTrack his monthly FIDE ratings, games, tournaments and more.

Karl-Oskar Rehnberg, a 18-year-old Swedish player, is rated 2035 — just 10 short of his peak of 2045 (Jan 2026, age 18). He is on a breakout run, having gained +224 Elo over the past 12 months. 32 rated games in the past year (≈29/year long-term). Recent standard appearances include Orebromasterskapet 2025-2026 R67, Allsvenskan 2025-2026: II:4 r5-6, and Karlstad Open 2025 std. Also played 8 rapid (including Stockholm Grand Prix 2025 rpd) and 2 blitz events (including SM-Blixten 2025) recently.

At junior level, he reached #10 and #54 nationally in U18 and U16.

Current rating

2035

Standard

Rpd1925·Blz1963

All-time high

2045

10 pts below
Jan 2026 · age 18

Activity

28

games / yr avg. · ≈2/mo

32 past 12 mo · ≈3/mo
classical only
Moderately active

Signature stat

#22,546

#22,546 · players worldwide · of 216,807

Career timeline

7 entries
2026
10th Swedish U18 player
at age 18 · rated 2045
Jan 2026
Best 12-month gain (+378 Elo)
1667 → 2045
Jan 2026
All-time peak 2045
at age 18 · −10 from today
Jan 2026
2025
Crossed 2000
at age 17
Dec 2025
Crossed 1800
at age 17
Mar 2025
2024
54th Swedish U16 player
at age 16 · rated 1659
Dec 2024

Standard rating history

Activity & highlights

Best result
Karlstad Open 2025 std
perf 2221 (+185) · 4.5/5 · #27
Top opponent
Stockholm Grand Prix 2025 std · Nov 2025 · +23.9 Elo
Evolution
+224
18112035
Tournaments
11
33 games
Score
23.5/ 3371.2%
21W5D7L
Top 3 losses

Last 12 months — tournaments

10 events
EventDateScoreRankPerfΔ Elo
Swiss
Feb 20261/2#111838-17.6
Team
Feb 20261/1#172808+17.6
Open Swiss
Dec 20254.5/5#272221-9.6
Swiss
Dec 20251/1#92724+14.4
Team
Nov 20251/1#142454+4.8
Swiss
Nov 20251.5/2#32062+7.6
Open Swiss
Nov 20252.5/4#352129+36.0
Swiss
Oct 20251/1#32438+4.8
Open Swiss
Aug 20252/4#212092+42.0
Round-Robin
Aug 20253.5/5#22109+62.8
Worst Elo result: Orebromasterskapet 2025-2026 R67 (-17.6 Elo, finished #11).

Rankings

/
Sweden
#469
out of 3,415 players
Europe
#16,603
in continent
World
#22,546
out of 400,000+

National ranking

Europe & World

Europe
World
Sweden
1
🇸🇪Grandelius, NilsFollow Nils GrandeliusTrack their monthly FIDE ratings, games, tournaments and more.
2,662
2
🇸🇪Hellers, FerdinandFollow Ferdinand HellersTrack their monthly FIDE ratings, games, tournaments and more.
2,581
3
🇸🇪Sivuk, VitalyFollow Vitaly SivukTrack their monthly FIDE ratings, games, tournaments and more.
2,517
4
🇸🇪Galperin, PlatonFollow Platon GalperinTrack their monthly FIDE ratings, games, tournaments and more.
2,509
5
🇸🇪Seo, Jung MinFollow Jung Min SeoTrack their monthly FIDE ratings, games, tournaments and more.
2,489
6
🇸🇪Berg, EmanuelFollow Emanuel BergTrack their monthly FIDE ratings, games, tournaments and more.
2,474
7
🇸🇪Blomqvist, ErikFollow Erik BlomqvistTrack their monthly FIDE ratings, games, tournaments and more.
2,472
8
🇸🇪Sorensen, HampusFollow Hampus SorensenTrack their monthly FIDE ratings, games, tournaments and more.
2,460
9
🇸🇪Trost, EdvinFollow Edvin TrostTrack their monthly FIDE ratings, games, tournaments and more.
2,459
10
🇸🇪Storme, IsakFollow Isak StormeTrack their monthly FIDE ratings, games, tournaments and more.
2,453
...
469🇸🇪Rehnberg, Karl-Oskar2,035
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
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,759
3
🇩🇪Keymer, VincentFollow Vincent KeymerTrack 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
🇦🇿Mamedyarov, ShakhriyarFollow Shakhriyar MamedyarovTrack their monthly FIDE ratings, games, tournaments and more.
2,717
8
🇫🇷Vachier-Lagrave, MaximeFollow Maxime Vachier-LagraveTrack 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
...
16603🇸🇪Rehnberg, Karl-Oskar2,035
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
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,759
7
🇩🇪Keymer, VincentFollow Vincent KeymerTrack 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
...
22546🇸🇪Rehnberg, Karl-Oskar2,035