Format
JK
Jakubowicz, Kacper
🇵🇱FIDE 21034079· Male· Poland· Born in 2007
Follow Kacper JakubowiczTrack his monthly FIDE ratings, games, tournaments and more.
Kacper Jakubowicz, a 19-year-old Polish player, is rated 1628 — just 9 short of his peak of 1637 (Mar 2026, age 19). He is on a breakout run, having gained +143 Elo over the past 12 months. 44 rated games in the past year (≈10/year long-term). Recent standard appearances include Miedzynarodowy Turniej Szachowy Cztery Pory Roku - edycja Wiosenna 2026 - grupa A, Miedzynarodowy Turniej Szachowy Cztery Pory Roku - edycja Zimowa 2026 - grupa A, and Mistrzostwa Krosna w szachach klasycznych 2026 gr. A. Also played 5 rapid (including V Bieszczadzki Festiwal Szachowy 2025 - Rapid) and 2 blitz events (including V Bieszczadzki Festiwal Szachowy 2025 - Blitz) recently.
Current rating
1628
Standard
Rpd1540·Blz1444
All-time high
1637
−9 pts below
Mar 2026 · age 19
Mar 2026 · age 19
Activity
20
games / yr avg. · ≈2/mo
44 past 12 mo · ≈4/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#136,398
#136,398 · players worldwide · of 218,279
Career timeline
8 entries2026
All-time peak 1637
at age 19 · −9 from today
Mar 2026
K-factor lowered to 20
at age 19
Jan 2026
2025
Re-crossed 1600
at age 18
Dec 2025
Crossed 1600
at age 18
Aug 2025
Crossed 1500
at age 18
Aug 2025
2024
Best 12-month gain (+348 Elo)
1137 → 1485
Aug 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
COVID-19
FIDE recal.
Activity & highlights
Evolution
+133
1495 → 1628
Tournaments
8
49 games
Score
21.5/ 4943.9%
17W9D23L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
8 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Apr 2026 | 2/5 | #23 | 1551 | -12.2 |
Swiss | Feb 2026 | 2.5/4 | #24 | 1830 | +11.6 |
Swiss | Jan 2026 | 1.5/3 | #22 | 1668 | -7.2 |
Swiss | Nov 2025 | 1.5/4 | #10 | 1595 | +2.0 |
Swiss | Nov 2025 | 4.5/9 | #10 | 1719 | +66.8 |
Swiss | Sep 2025 | 1/4 | #21 | 1414 | -39.6 |
Open Swiss | Jul 2025 | 4.5/5 | #49 | 2132 | +16.4 |
Swiss | Jul 2025 | 4/7 | #15 | 1766 | +94.8 |
Worst Elo result: Turniej Szachowy Cztery Pory Roku - edycja Jesienna - grupa A (-39.6 Elo, finished #21).
Most-Played Opponents
Rankings
/
Poland
#3,426
out of 10,822 players
Europe
#92,557
in continent
World
#136,390
out of 400,000+
National ranking
Europe & World
Europe
World
Poland
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Europe
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World
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