Format
RG
Renn, Grzegorz
🇵🇱FIDE 21012890· Male· Poland· Born in 2009
Follow Grzegorz RennTrack his monthly FIDE ratings, games, tournaments and more.
Grzegorz Renn, a 17-year-old Polish player, is rated 1644 — just 2 short of his peak of 1646 (Dec 2025, age 16). He is climbing fast, having gained +84 Elo over the past 12 months. 12 rated games in the past year (≈18/year long-term). Recent appearances: Mistrzostwa Plocka w szachach klasycznych 2025 FIDE - open B and Warsaw Chess Festival - XXIV Miguel Najdorf Memorial - group C. Also played 2 rapid (including Turniej Niepodleglosci 2025) and 2 blitz events (including Mistrzostwa Mazowsza Juniorow w Szachach Blyskawicznych do 18 lat - 2025) recently. He took a 18-month break between Oct 2022 and May 2024.
Current rating
1644
Standard
Rpd1589·Blz1627
All-time high
1646
−2 pts below
Dec 2025 · age 16
Dec 2025 · age 16
Activity
5
games / yr avg.
12 past 12 mo · ≈1/mo
classical only
Occasional
classical only
Occasional
Signature stat
#130,454
#130,454 · players worldwide · of 218,279
Career timeline
8 entries2025
All-time peak 1646
at age 16 · −2 from today
Dec 2025
Crossed 1600
at age 16
Aug 2025
Best 12-month gain (+359 Elo)
1209 → 1568
Feb 2025
2024
Crossed 1500
at age 15
Mar 2024
Crossed 1400
at age 15
Mar 2024
2022
Inactive for 18 months
paused at 1209 → returned at 1523
Oct 2022
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.
Activity & highlights
Best result
Mistrzostwa Plocka w szachach klasycznych 2025 FIDE - open Bperf 2320 (+674) · 5.5/5 · #2
Top opponent
Evolution
+79
1565 → 1644
Tournaments
2
16 games
Score
12.5/ 1678.1%
11W3D2L
Top 3 wins
1.[W]vsMilosz Machczynski1,564·Mistrzostwa Plocka w szachach klasycznych 2025 FIDE - open B·R6·+15.4
Top 2 losses
1.[L]vsJagoda Dzierzgowska1,411·Warsaw Chess Festival - XXIV Miguel Najdorf Memorial - group C·R1·-30.3
Last 12 months — tournaments
2 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Nov 2025 | 5.5/5 | #2 | 2320 | +38.0 |
Open Swiss | Jul 2025 | 7/7 | #18 | 2269 | +44.0 |
Most-Played Opponents
vsJagoda Dzierzgowska
🇵🇱POL·1631
+2 −4 =2
8 games·last met Jul 2025
View head-to-head →
vsJuliusz Klim
🇵🇱POL·2054
+2 −4 =0
6 games·last met Nov 2021
View head-to-head →
vsDominik Nocek
🇵🇱POL·1768
+0 −4 =1
5 games·last met Sep 2022
View head-to-head →
vsBorys Rudas
🇵🇱POL·1495
+0 −4 =1
5 games·last met Dec 2020
View head-to-head →
Rankings
/
Poland
#3,247
out of 10,822 players
Europe
#89,280
in continent
World
#130,448
out of 400,000+
National ranking
Europe & World
Europe
World
Poland
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| ... | ||
| 3247 | 1,644 | |
Europe
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| 5 | 🇵🇱Follow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more. | 2,739 |
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| ... | ||
| 89280 | 1,644 | |
World
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| 7 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
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| ... | ||
| 130448 | 1,644 | |