Format
DM
Deuer, Marius
GM🇩🇪FIDE 16236432· Male· Germany· Born in 2008
Follow Marius DeuerTrack his monthly FIDE ratings, games, tournaments and more.
Marius Deuer, a 18-year-old German Grandmaster, is rated 2491 — just 16 short of his peak of 2507 (Dec 2024, age 16) and ranked 2nd among German players under 18, and in the top 1% worldwide. He has fluctuated between 2452 and 2507 over the past 2 years. 93 rated games in the past year (≈90/year long-term). Recent standard appearances include 2. Schachbundesliga 2025-2026 Stichkampf Aufstieg, 2. Bundesliga Sued 2025-2026 Maerz 2026, and Int. Graz Open 2026 - A. Also played 1 rapid event (including Grand Prix PlusCity - Open Austrian Team Rapid Championship 2025) recently. He reached German #29 in Dec 2024.
Awarded GM in 2026 (age 18), IM in 2023 (age 15), and FM in 2021 (age 13). At junior level, he reached World #6 in U18, World #5 in U16, World #12 in U14, World #9 in U12 and World #24 in U10.
Current rating
2491
Standard
Rpd2436·Blz2516
All-time high
2507
−16 pts below
Dec 2024 · age 16
Dec 2024 · age 16
Activity
124
games / yr avg. · ≈10/mo
84 past 12 mo · ≈7/mo
classical only
Very active
classical only
Very active
Signature stat
#2
#2 · German players under 18 · of 790
Career timeline
19 entries2026
GM title awardedGM
at age 18 · 2026 1st FIDE Council
May 2026
Re-crossed 2500
at age 18
Feb 2026
2025
6th U18 player worldwide
at age 17 · rated 2505
Jan 2025
2024
Peak German rank: #29
at age 16 · rated 2507
Dec 2024
5th U16 player worldwide
at age 16 · rated 2507
Dec 2024
Crossed 2500
at age 16
Dec 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
COVID-19
Activity & highlights
Evolution
-4
2495 → 2491
Tournaments
13
84 games
Score
53/ 8463.1%
36W34D14L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
13 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | May 2026 | 5/9 | #12 | 2497 | +1.0 |
Team | Mar 2026 | 0/1 | #14 | 1743 | -4.2 |
Team | Mar 2026 | 0.5/1 | #56 | 2606 | +1.6 |
Open Swiss | Feb 2026 | 5.5/9 | #47 | 2351 | -15.7 |
Team | Feb 2026 | 3/4 | #4 | 2640 | +7.0 |
Team | Jan 2026 | 1/2 | #55 | 2486 | -0.2 |
Open Swiss | Dec 2025 | 6.5/9 | #4 | 2524 | +9.0 |
Open Swiss | Nov 2025 | 7/10 | #8 | 2609 | +18.4 |
Open Swiss | Oct 2025 | 7/11 | #18 | 2386 | -12.0 |
Team | Sep 2025 | 1.5/2 | #30 | 2690 | +5.5 |
Rankings
/
Germany
#34
out of 15,549 players
Europe
#387
in continent
World
#659
out of 400,000+
National ranking
Europe & World
Europe
World
Germany
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