Format
GJ
Grudzien, Jonatan
🇵🇱FIDE 91120845· Male· Poland· Born in 2016
Follow Jonatan GrudzienTrack his monthly FIDE ratings, games, tournaments and more.
Jonatan Grudzien, a 10-year-old Polish player, is rated 1643. He is rising rapidly, having gained +166 Elo over the past 12 months. 55 rated games in the past year (≈44/year long-term). Recent standard appearances include III Malopolska Liga Juniorow 2026 Round 5-9, III Malopolska Liga Juniorow 2026 Round 1-4, and INDYWIDUALNE MISTRZOSTWA POLSKI MLODZIKOW DO LAT 10 - chlopcy. Also played 5 rapid (including Mistrzostwa Polski Mlodzikow w Szachach Szybkich 2025 - grupa C10) and 4 blitz events (including XXXVI Miedzynarodowy Festiwal Szachowy CRACOVIA 2025 Blitz) recently. His peak of 1684 was reached at age 10 (Jan 2026).
At junior level, he reached #12 nationally in U10.
Current rating
1643
Standard
Rpd1664·Blz1605
All-time high
1684
−41 pts below
Jan 2026 · age 10
Jan 2026 · age 10
Activity
41
games / yr avg. · ≈3/mo
55 past 12 mo · ≈5/mo
classical only
Active
classical only
Active
Signature stat
#130,811
#130,811 · players worldwide · of 218,279
Career timeline
9 entries2026
Re-crossed 1600
at age 10
May 2026
12th Polish U10 player
at age 10 · rated 1684
Jan 2026
Best 12-month gain (+173 Elo)
1511 → 1684
Jan 2026
All-time peak 1684
at age 10 · −41 from today
Jan 2026
2025
Crossed 1600
at age 9
Nov 2025
Re-crossed 1500
at age 9
Jul 2025
Standard rating history
Peak
FIDE title
Threshold
First rated
Activity & highlights
Top opponent
Evolution
+129
1514 → 1643
Tournaments
10
74 games
Score
43/ 7458.1%
41W14D19L
Top 3 wins
Top 3 losses
2.[L]vsAndrii Tkachenko1,560·XXXVI Miedzynarodowy Festiwal Szachowy CRACOVIA 2025 Grupa H U10·R3·-26.8
Last 12 months — tournaments
10 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Apr 2026 | 8/3 | #2 | 2304 | +6.8 |
Round-Robin | Apr 2026 | 3/2 | #25 | 2230 | +49.6 |
Round-Robin | Mar 2026 | 1/3 | #42 | 1456 | -12.0 |
Open Swiss | Mar 2026 | 5.5/9 | #13 | 1675 | +67.2 |
Open Swiss | Jan 2026 | 1.5/5 | #43 | 1463 | -58.0 |
Swiss | Jan 2026 | 1/5 | #20 | 1322 | -90.0 |
Open Swiss | Dec 2025 | 6/6 | #3 | 2315 | +46.0 |
Swiss | Oct 2025 | 7.5/7 | #1 | 2312 | +123.6 |
Swiss | Aug 2025 | 6/4 | #7 | 2366 | +24.0 |
Open Swiss | Jun 2025 | 3.5/5 | #11 | 1668 | +4.8 |
Most-Played Opponents
vsArtur Noga
🇵🇱POL·1824
+1 −5 =2
8 games·last met Jun 2026
View head-to-head →
vsJulian Moniowski
🇵🇱POL·1621
+2 −3 =2
7 games·last met Mar 2026
View head-to-head →
vsFilip Czerwiec
🇵🇱POL·1530
+3 −3 =0
6 games·last met Dec 2025
View head-to-head →
vsMikolaj Babala
🇵🇱POL·1428
+1 −4 =1
6 games·last met Oct 2025
View head-to-head →
vsZakhar Firsov
🇵🇱POL·1483
+3 −1 =1
5 games·last met Jun 2026
View head-to-head →
Rankings
/
Poland
#3,259
out of 10,822 players
Europe
#89,457
in continent
World
#130,805
out of 400,000+
National ranking
Europe & World
Europe
World
Poland
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| ... | ||
| 3259 | 1,643 | |
Europe
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,841 |
| 2 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
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| 5 | 🇵🇱Follow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more. | 2,739 |
| 6 | 🇭🇺Follow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more. | 2,729 |
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| ... | ||
| 89457 | 1,643 | |
World
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,841 |
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| 7 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
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| ... | ||
| 130805 | 1,643 | |