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Kosiorek, Marek

FM🇵🇱

FIDEFIDE 1110284· Male· Poland· Born in 1976

Follow Marek KosiorekTrack his monthly FIDE ratings, games, tournaments and more.

Marek Kosiorek, a 50-year-old Polish FIDE Master, is rated 2191 and sitting in the top 4% of Polish players, and in the top 4% worldwide. He has slipped back 30 Elo over the past 12 months. 16 rated games in the past year (≈17/year long-term). Recent appearances: III Liga Mazowiecka 2026 and Szachowe Termopile - turniej A. Also played 2 rapid (including I Ogolnopolski Turniej Szachowy "Grudziadzki Flisak".) and 1 blitz events (including Mistrzostwa Polski w Szachach Blyskawicznych 2025) recently. He had 3 career breaks: 13 months (2010–2012), 25 months (2016–2018) and 16 months (2024–2026). His peak of 2390 was reached at age 29 (Jul 2005, Polish #66 at the time).

Awarded FM in 2025 (age 49).

Current rating

2191

Standard

Rpd2255·Blz2218

All-time high

2390

−199 pts below
Jul 2005 · age 29

Activity

12

games / yr avg. · ≈1/mo

16 past 12 mo · ≈1/mo
classical only
Moderately active

Signature stat

Top 4%

#284 · Polish players · of 6,347

Career timeline

15 entries
2025
FM title awardedFM
at age 49
Apr 2025
2024
Inactive for 16 months
paused at 2221 → returned at 2191
Oct 2024
17th Polish 45-50 player
at age 48 · rated 2259
Sep 2024
Best 12-month gain (+76 Elo)
2184 → 2260
Jan 2024
2023
Re-crossed 2200
at age 47
Feb 2023
2017
10th Polish 40-45 player
at age 41 · rated 2307
Mar 2017

Standard rating history

Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19

Activity & highlights

Best result
Szachowe Termopile - turniej A
perf 2604 (+413) · 8.5/8 · #2
Top opponent
vs Dawid DobosiewiczFM 2,391
Szachowe Termopile - turniej A · Jan 2026 · +5.2 Elo
Evolution
-30
2221 → 2191
Tournaments
2
17 games
Score
11.5/ 1767.6%
10W3D4L
Top 3 wins
1.[W]vsPiotr Mickiewicz2,251·III Liga Mazowiecka 2026·R7·+11.7
2.[W]vsKamil Celinski2,081·III Liga Mazowiecka 2026·R2·+6.9
3.[D]vsDawid DobosiewiczFM2,391·Szachowe Termopile - turniej A·R4·+5.2
Top 3 losses
1.[L]vsFranciszek Gozdzikowski1,881·III Liga Mazowiecka 2026·R1·-17.1
2.[L]vsAbdulla Khamidov2,074·III Liga Mazowiecka 2026·R8·-13.2
3.[L]vsMariusz SzewczykCM2,148·III Liga Mazowiecka 2026·R3·-11.2

Last 12 months — tournaments

2 events
EventDateScoreRankPerfΔ Elo
III Liga Mazowiecka 2026
Open Swiss
Feb 20263/8#492002-46.6
Szachowe Termopile - turniej A
Swiss
Jan 20268.5/8#22604+16.6
Worst Elo result: III Liga Mazowiecka 2026 (-46.6 Elo, finished #49).

Rankings

/
Poland
#284
out of 10,822 players
Europe
#6,103
in continent
World
#8,674
out of 400,000+

National ranking

Europe & World

Europe
World
Poland
1
🇵🇱Duda, Jan-KrzysztofFollow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more.
2,739
2
🇵🇱Wojtaszek, RadoslawFollow Radoslaw WojtaszekTrack their monthly FIDE ratings, games, tournaments and more.
2,650
3
🇵🇱Gumularz, SzymonFollow Szymon GumularzTrack their monthly FIDE ratings, games, tournaments and more.
2,613
4
🇵🇱Teclaf, PawelFollow Pawel TeclafTrack their monthly FIDE ratings, games, tournaments and more.
2,571
5
🇵🇱Malek, JanFollow Jan MalekTrack their monthly FIDE ratings, games, tournaments and more.
2,560
6
🇵🇱Warakomski, TomaszFollow Tomasz WarakomskiTrack their monthly FIDE ratings, games, tournaments and more.
2,558
7
🇵🇱Socko, BartoszFollow Bartosz SockoTrack their monthly FIDE ratings, games, tournaments and more.
2,552
8
🇵🇱Kosakowski, JakubFollow Jakub KosakowskiTrack their monthly FIDE ratings, games, tournaments and more.
2,549
9
🇵🇱Seemann, JakubFollow Jakub SeemannTrack their monthly FIDE ratings, games, tournaments and more.
2,548
10
🇵🇱Bartel, MateuszFollow Mateusz BartelTrack their monthly FIDE ratings, games, tournaments and more.
2,547
...
284🇵🇱Kosiorek, Marek2,191
Europe
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,841
2
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,767
3
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,764
4
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,744
5
🇵🇱Duda, Jan-KrzysztofFollow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more.
2,739
6
🇭🇺Rapport, RichardFollow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more.
2,729
7
🇳🇱Van Foreest, JordenFollow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more.
2,728
8
🇫🇷Vachier-Lagrave, MaximeFollow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more.
2,721
9
🇦🇿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.
2,713
...
6103🇵🇱Kosiorek, Marek2,191
World
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,841
2
🇺🇸Nakamura, HikaruFollow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more.
2,792
2
🇺🇸Caruana, FabianoFollow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more.
2,792
4
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
4
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
6
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,767
7
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,764
8
🇮🇳Erigaisi ArjunFollow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more.
2,761
9
🇺🇸So, WesleyFollow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more.
2,753
9
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
...
8674🇵🇱Kosiorek, Marek2,191