Format
KL
Koziel, Leon
🇵🇱FIDE 21096155· Male· Poland· Born in 2010
Follow Leon KozielTrack his monthly FIDE ratings, games, tournaments and more.
Leon Koziel, a 16-year-old Polish player, is rated 1569 — his current career high. He is on a breakout run, having gained +133 Elo over the past 12 months. 16 rated games in the past year (≈25/year long-term). Recent standard appearances include Swietokrzyska Liga Szachowa 2025 - Turniej IV (A) - od 1600 PZSzach, Grand Hotel Kielce Chess Open 2025 - Turniej B, and Mistrzostwa Wojewodztwa Juniorow w szachach klasycznych na rok 2025 - C16. Also played 2 rapid (including Mistrzostwa Polski Juniorow w Szachach Szybkich 2025 - grupa C16) and 1 blitz events (including Mistrzostwa Polski Juniorow w Szachach Blyskawicznych 2025 - grupa C16) recently.
Current rating
1569
Standard
Rpd1415·Blz1425
All-time high
1569
at best
Jan 2026 · age 16
Jan 2026 · age 16
Activity
24
games / yr avg. · ≈2/mo
16 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#158,165
#158,165 · players worldwide · of 216,808
Career timeline
7 entries2026
All-time peak 1569
at age 16
Jan 2026
2025
Crossed 1500
at age 15
Aug 2025
2024
Best 12-month gain (+463 Elo)
1008 → 1471
Jun 2024
Re-crossed 1400
at age 14
Jun 2024
Crossed 1400
at age 14
Mar 2024
Crossed 1200
at age 14
Mar 2024
Standard rating history
Last 12 months — activity & highlights
Best result
Swietokrzyska Liga Szachowa 2025 - Turniej IV (A) - od 1600 PZSzachperf 1616 (+59) · 1.5/5 · #25
Top opponent
Evolution
+147
1422 → 1569
Tournaments
3
23 games
Score
7.5/ 2332.6%
6W3D14L
Top 3 wins
1.[W]vsNatalia Opala1,774·Swietokrzyska Liga Szachowa 2025 - Turniej IV (A) - od 1600 PZSzach·R3·+31.1
3.[W]vsWojciech Zajac1,457·Mistrzostwa Wojewodztwa Juniorow w szachach klasycznych na rok 2025 - C16·R4·+22.0
Top 3 losses
1.[L]vsJan Kasinski1,421·Mistrzostwa Wojewodztwa Juniorow w szachach klasycznych na rok 2025 - C16·R3·-20.1
Last 12 months — tournaments
3 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Nov 2025 | 1.5/5 | #25 | 1616 | +12.0 |
Open Swiss | Jun 2025 | 3.5/7 | #91 | 1471 | 0.0 |
Round-Robin | Jun 2025 | 2.5/8 | #10 | 1452 | -30.4 |
Worst Elo result: Mistrzostwa Wojewodztwa Juniorow w szachach klasycznych na rok 2025 - C16 (-30.4 Elo, finished #10).
Rankings
/
Poland
#4,193
out of 10,756 players
Europe
#104,094
in continent
World
#158,148
out of 400,000+
National ranking
Europe & World
Europe
World
Poland
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| 5 | 🇵🇱Follow Jan MalekTrack their monthly FIDE ratings, games, tournaments and more. | 2,560 |
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| 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 |
| ... | ||
| 4193 | 1,569 | |
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 |
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| ... | ||
| 104094 | 1,569 | |
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 |
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| 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 |
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| ... | ||
| 158148 | 1,569 | |