Format
MW
Mierzwinski, Wiktor
🇵🇱FIDE 41873998· Male· Poland· Born in 2011
Follow Wiktor MierzwinskiTrack his monthly FIDE ratings, games, tournaments and more.
Wiktor Mierzwinski, a 15-year-old Polish player, is rated 1551. He is on a steady climb with +75 Elo over the past 12 months. 31 rated games in the past year (≈16/year long-term). Recent standard appearances include Mistrzostwa Slaska Juniorow 2026 - C15, European Individual Chess Championship 2026, and Druzynowe Mistrzostwa Slaska Juniorow - I Liga 2026 Round 6-9. Also played 13 rapid (including IV Gliwicki Festiwal Szachowy - MBF Group Open) and 6 blitz events (including Mistrzostwa Polski Juniorow w Szachach Blyskawicznych 2025 - grupa C14) recently. His peak of 1621 was reached at age 15 (May 2026).
Current rating
1551
Standard
Rpd1504·Blz1418
All-time high
1621
−70 pts below
May 2026 · age 15
May 2026 · age 15
Activity
16
games / yr avg. · ≈1/mo
29 past 12 mo · ≈2/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#165,899
#165,899 · players worldwide · of 218,279
Career timeline
9 entries2026
Best 12-month gain (+147 Elo)
1474 → 1621
May 2026
Re-crossed 1600
at age 15
May 2026
Re-crossed 1500
at age 15
May 2026
All-time peak 1621
at age 15 · −70 from today
May 2026
2025
Re-crossed 1500
at age 14
Oct 2025
Crossed 1600
at age 14
Feb 2025
Standard rating history
Peak
FIDE title
Threshold
First rated
Activity & highlights
Top opponent
Evolution
+94
1457 → 1551
Tournaments
14
80 games
Score
19/ 8023.8%
14W10D56L
Top 3 wins
1.[W]vsDariusz Klopotowski1,637·I Turniej w Fortecy o male normy II.I,K. - do FIDE - 5 Rund·R2·+27.6
Top 3 losses
Last 12 months — tournaments
10 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | May 2026 | 2/3 | #53 | 1677 | -70.0 |
Open Swiss | Apr 2026 | 2/9 | #483 | 1566 | 0.0 |
Open Swiss | Mar 2026 | 0/2 | #143 | 876 | 0.0 |
Swiss | Mar 2026 | 0/4 | #30 | 793 | 0.0 |
Open Swiss | Jan 2026 | 0/4 | #128 | 755 | 0.0 |
Swiss | Jan 2026 | 2/5 | #25 | 1663 | +25.6 |
Open Swiss | Jan 2026 | 1/2 | #171 | 1812 | -20.8 |
Swiss | Dec 2025 | 1/8 | #15 | 1217 | -104.8 |
Team | Nov 2025 | 0/2 | #115 | 912 | -21.6 |
Team | Nov 2025 | 0.5/3 | #105 | 1421 | -13.2 |
Worst Elo result: IV Zimowy Festiwal Szachowy - Czeladz - OPEN - 9R o kategorie II,I,K - do FIDE (-104.8 Elo, finished #15).
Most-Played Opponents
vsRafal Piatek
🇵🇱POL·1526
+1 −7 =0
8 games·last met Apr 2026
View head-to-head →
vsJeremi Wesolowski
🇵🇱POL·1845
+0 −7 =0
7 games·last met Feb 2026
View head-to-head →
vsJakub Klepacz
🇵🇱POL·1744
+0 −6 =0
6 games·last met May 2026
View head-to-head →
vsJakub Kryszak
🇵🇱POL·1506
+4 −2 =0
6 games·last met Apr 2026
View head-to-head →
vsMichal Krasniewski
🇵🇱POL·1608
+1 −5 =0
6 games·last met Nov 2025
View head-to-head →
Rankings
/
Poland
#4,510
out of 10,822 players
Europe
#107,968
in continent
World
#165,877
out of 400,000+
National ranking
Europe & World
Europe
World
Poland
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