Format
DA
Diachek, Andrii
FM🇵🇱FIDE 34106499· Male· Poland· Born in 2012
Follow Andrii DiachekTrack his monthly FIDE ratings, games, tournaments and more.
Andrii Diachek, a 14-year-old Polish FIDE Master, is rated 2279 — just 30 short of his peak of 2309 (Mar 2026, age 14) and ranked 4th among Polish players under 14, and in the top 2% worldwide. He is on a steady climb with +52 Elo over the past 12 months. 104 rated games in the past year (≈72/year long-term). Recent standard appearances include Mistrzostwa Polski Juniorow - OOM Lodzkie 2026 - Grupa C14, European Individual Chess Championship 2026, and Int. Graz Open 2026 - A. Also played 4 rapid (including "Kyiv Chess Cup -2026" RAPID, Super Liga 1 stage) and 5 blitz events (including "CUP OBOLON - 2025" BLITZ) recently.
Competes for Poland since Sep 2023. Awarded FM in 2025 (age 13) and CM in 2024 (age 12). At junior level, he reached World #28 in U14, World #11 in U12, World #9 in U10 and World #20 in U8.
Current rating
2279
Standard
Rpd2163·Blz2238
All-time high
2309
−30 pts below
Mar 2026 · age 14
Mar 2026 · age 14
Activity
106
games / yr avg. · ≈9/mo
104 past 12 mo · ≈9/mo
classical only
Very active
classical only
Very active
Signature stat
#4
#4 · Polish players under 14 · of 574
Career timeline
20 entries2026
All-time peak 2309
at age 14 · −30 from today
Mar 2026
28th U14 player worldwide
at age 14 · rated 2301
Feb 2026
Crossed 2300
at age 14
Jan 2026
K-factor lowered to 20
at age 14
Jan 2026
2025
Re-crossed 2200
at age 13
Dec 2025
FM title awardedFM
at age 13
Oct 2025
Standard rating history
Activity & highlights
Top opponent
Evolution
+103
2176 → 2279
Tournaments
10
88 games
Score
57.5/ 8865.3%
40W35D13L
Top 3 wins
3.[W]vsLaertes NeuhoffFM2,156·X Miedzynarodowy Festiwal Szachowy im. Lecha Kaczynskiego w Bydgoszczy - OPEN A·R6·+16.1
Top 3 losses
Last 12 months — tournaments
10 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | Apr 2026 | 6/9 | #7 | 2197 | -13.2 |
Open Swiss | Apr 2026 | 4.5/8 | #422 | 2308 | -16.4 |
Open Swiss | Feb 2026 | 5.5/9 | #65 | 2365 | +16.2 |
Open Swiss | Feb 2026 | 5/7 | #7 | 2247 | -7.6 |
Open Swiss | Nov 2025 | 5/9 | #13 | 2318 | +84.4 |
Swiss | Nov 2025 | 6.5/9 | #1 | 2251 | +36.0 |
Open Swiss | Oct 2025 | 5.5/9 | #22 | 2141 | -20.0 |
Swiss | Aug 2025 | 7/9 | #1 | 2114 | -24.0 |
Open Swiss | Jul 2025 | 5.5/9 | #9 | 2219 | -3.2 |
Team | Jun 2025 | 7/9 | #7 | 2171 | +2.4 |
Most-Played Opponents
vsStepan MohylnyiFM
🇺🇦UKR·2282
+2 −4 =2
8 games·last met Aug 2024
View head-to-head →
vsAliaksandr Sakharchuk
🇵🇱POL·1999
+6 −0 =1
7 games·last met Apr 2026
View head-to-head →
vsNikita FilindashCM
🇨🇿CZE·2177
+6 −0 =1
7 games·last met Sep 2021
View head-to-head →
vsAdam GibalaFM
🇵🇱POL·2366
+1 −3 =2
6 games·last met Apr 2026
View head-to-head →
vsWiktor GolisFM
🇵🇱POL·2348
+2 −3 =1
6 games·last met Apr 2026
View head-to-head →
Rankings
/
Poland
#166
out of 10,756 players
Europe
#3,185
in continent
World
#4,750
out of 400,000+
National ranking
Europe & World
Europe
World
Poland
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| 2 | 🇵🇱Follow Radoslaw WojtaszekTrack their monthly FIDE ratings, games, tournaments and more. | 2,650 |
| 3 | 🇵🇱Follow Szymon GumularzTrack their monthly FIDE ratings, games, tournaments and more. | 2,613 |
| 4 | 🇵🇱Follow Pawel TeclafTrack their monthly FIDE ratings, games, tournaments and more. | 2,573 |
| 5 | 🇵🇱Follow Jan MalekTrack their monthly FIDE ratings, games, tournaments and more. | 2,560 |
| 6 | 🇵🇱Follow Tomasz WarakomskiTrack their monthly FIDE ratings, games, tournaments and more. | 2,558 |
| 7 | 🇵🇱Follow Bartosz SockoTrack their monthly FIDE ratings, games, tournaments and more. | 2,552 |
| 8 | 🇵🇱Follow Jakub KosakowskiTrack their monthly FIDE ratings, games, tournaments and more. | 2,550 |
| 9 | 🇵🇱Follow Jakub SeemannTrack their monthly FIDE ratings, games, tournaments and more. | 2,548 |
| 10 | 🇵🇱Follow Mateusz BartelTrack their monthly FIDE ratings, games, tournaments and more. | 2,547 |
| ... | ||
| 166 | 2,279 | |
Europe
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,840 |
| 2 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 3 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 3 | 🇫🇷Follow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 5 | 🇵🇱Follow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more. | 2,739 |
| 6 | 🇳🇱Follow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more. | 2,735 |
| 7 | 🇭🇺Follow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more. | 2,729 |
| 8 | 🇫🇷Follow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more. | 2,717 |
| 8 | 🇦🇿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. | 2,708 |
| ... | ||
| 3185 | 2,279 | |
World
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,840 |
| 2 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 3 | 🇺🇸Follow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,788 |
| 4 | 🇺🇿Follow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more. | 2,780 |
| 5 | 🇺🇿Follow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,776 |
| 6 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 7 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 7 | 🇫🇷Follow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 9 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,754 |
| 10 | 🇨🇳Follow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| ... | ||
| 4750 | 2,279 | |