J
GM
Jakubowski, Krzysztof
POL·Born 1983·FIDE #1112848·3,133 Games
POLFIDE OTB · #1112848 · 3,133 Games
Classical24242,886 g Games
Rapid2383120 g Games
Blitz2365127 g Games
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3133 games analyzed
Statistics
Total
3133Wins
1522Draws
620Losses
98949%20%32%
Play Style
before facing themWhat you need to know before facing themElite accuracy: 92.5% average
Very consistent (90%)
Very precise: only 0.1 blunders/game
Dominates 1.c4 ♔ (69% in 155 games)
Deep Analysis
Stockfish 18 · Classical games · 75 analyzedAccuracy by phase
Opening
96.0%
Middlegame
91.8%
Endgame
94.3%
Clutch Factor
+2%Winning (+2)Winning (+2)
93%19g
EqualEqual position
95%27g
Losing (−2)Losing (−2)
90%29g
Accuracy under pressure
Problematic Pieces — which cause most errors?
21%
24 err
20%
22 err
19%
21 err
18%
20 err
12%
13 err
11%
12 err
Critical Moment
Move 35 avg0%
1-15
20%
16-25
40%
26-35
30%
36-45
10%
46+
40% of blunders after move 26-35 — keep the tension until then.of blunders occur in moves 26-35. Keep the tension until that moment.
Error Heatmap — where do errors occur?
5
5
5
6
6
FewMany
Errors mapped
47
Hotspot zone
d3 / h3
Critical squares
d3
6 err
h3
6 err
a4
5 err
c5
5 err
h4
5 err
d3/h3 account for most of the errors. Force decisions in those zones.
Openings
3,133 GamesBased on 3,133 player gamesWeaknesses
— exploit these— exploit these linesaswhite52.5%Losses
Sicilian: Kan — 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6
40 Games · last played last yearPlay this line
aswhite50.0%Losses
Petroff: Main Line — 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6
14 Games · last played 7 months agoPlay this line
asblack53.3%Losses
Sicilian: 2...Nc6 — 1.e4 c5 2.Nf3 Nc6
15 Games · last played 7 months agoPlay this line
Strengths
— avoid these— avoid these linesaswhite76.0%Wins
Sicilian: Sveshnikov — 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e525 Games · last played last year
25 Games · last played last year
aswhite56.3%Wins
Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d6160 Games · last played 4 months ago
160 Games · last played 4 months ago
asblack80.0%Wins
Caro-Kann: Main Line — 1.e4 c6 2.d4 d5 3.Nc3 dxe410 Games
10 Games
asblack72.7%Wins
London System — 1.d4 Nf6 2.Bf4 b611 Games
11 Games
Critical Blunders
10 errors · Stockfish#126Kc4??vs PiesikOTB · 2025
#34Ba4??vs YatskarOTB · 2025
#32Rxb2??vs FirouzjaOTB · 2024
#29Qh3??vs StamatiouOTB · 2024
#33g5??vs SkawinskiOTB · 2024
#20Qa4??vs BluebaumOTB · 2024
#33Rb1??vs SabukBlitz · 2024
#33Nxb5??vs KlimkowskiBlitz · 2024
#29f4??vs BorischikBlitz · 2024
#23Qa2??vs MickiewiczOTB · 2024
Recent Games
3,133 GamesW
Mondrzycki, Bartlomiej(2177)
TCh-POL Ekstraliga 2026 · 20 Jun 2026
L
Lukasiewicz, Krzysztof(2284)
TCh-POL Ekstraliga 2026 · 17 Jun 2026
L
Costa, Leonardo(2556)
26th ch-EUR Indiv 2026 · 19 Apr 2026
D
Petrosyan, Manuel(2584)
26th ch-EUR Indiv 2026 · 18 Apr 2026
W
Lyakh, Vasiliy(2314)
26th ch-EUR Indiv 2026 · 16 Apr 2026
L
Sokolovsky, Yahli(2559)
26th ch-EUR Indiv 2026 · 15 Apr 2026
Endgame Statistics
PRO38 endgames (46.9%)Unlock Endgame Statistics
19 endgame categories analyzed — discover where they collapse under pressure
Repertoire
8
76
5
4
3
2
1a
b
c
d
efghMove arrowsmost-played moves
Stockfish
1571 Games
53%19%28%
MoveGamesPerformance%
1.e4
104662%
1.d4
27959%
1.c4
15569%
1.Nf3
7767%
1.b3
950%
1.g3Strong
475%
1.h4Strong
1100%