G
GM
Gdanski, Jacek
POL·Born 1970·FIDE #1100106·1,730 Games
POLFIDE OTB · #1100106 · 1,730 Games
Classical24781,529 g Games
Rapid233796 g Games
Blitz2294105 g Games
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1730 games analyzed
Statistics
Total
1730Wins
666Draws
665Losses
39938%38%23%
Play Style
before facing themWhat you need to know before facing themElite accuracy: 91.3% average
Very consistent (83%)
Very precise: only 0.1 blunders/game
Dominates 1.c4 ♔ (65% in 23 games)
Vulnerable to 1.Nf3 ♚ (only 48%)
Deep Analysis
Stockfish 18 · Classical games · 182 analyzedAccuracy by phase
Opening
95.8%
Middlegame
91.9%
Endgame
93.8%
Clutch Factor
+6%Winning (+2)Winning (+2)
93%86g
EqualEqual position
93%55g
Losing (−2)Losing (−2)
87%41g
Accuracy under pressure
Problematic Pieces — which cause most errors?
23%
52 err
19%
43 err
18%
40 err
15%
33 err
13%
30 err
12%
27 err
Critical Moment
Move 38 avg5%
1-15
10%
16-25
35%
26-35
30%
36-45
20%
46+
35% 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?
11
FewMany
Errors mapped
74
Hotspot zone
e5 / c6
Critical squares
e5
11 err
c6
8 err
d5
8 err
f4
8 err
b3
7 err
e5/c6 account for most of the errors. Force decisions in those zones.
Openings
1,730 GamesBased on 1,730 player gamesWeaknesses
— exploit these— exploit these linesaswhite46.7%Losses
Sicilian: Classical — 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6
15 Games · last played 18 years agoPlay this line
No significant weaknesses detected as black
Strengths
— avoid these— avoid these linesaswhite57.6%Wins
Sicilian: Closed — 1.e4 c5 2.Nc3 Nc685 Games · last played last year
85 Games · last played last year
aswhite57.1%Wins
French: Tarrasch — 1.e4 e6 2.d4 d5 3.Nd214 Games · last played last year
14 Games · last played last year
asblack45.9%Wins
French: Tarrasch — 1.e4 e6 2.d4 d5 3.Nd285 Games · last played last year
85 Games · last played last year
asblack46.2%Wins
Sicilian: e6 Systems — 1.e4 c5 2.Nf3 e626 Games · last played 3 years ago
26 Games · last played 3 years ago
Critical Blunders
10 errors · Stockfish#30Qxc7??vs SenguptaOTB · 2025
#23Qc8??vs RekucOTB · 2025
#29Ne5??vs LeniartOTB · 2025
#14hxg6??vs HamiteviciOTB · 2025
#14h4??vs ChmuraOTB · 2025
#22Qxe5??vs FrankOTB · 2025
#32Nh2??vs MedhusOTB · 2025
#23Qc2??vs StormeOTB · 2025
#38Rf5??vs SyrkiewiczOTB · 2024
#33h4??vs TsiapkoOTB · 2024
Recent Games
1,730 GamesL
Ostlund, Joar(2338)
Rond 3: Gdanski, Jacek - ... · 30 Nov 2025
L
Urkedal, Frode Olav Olsen(2570)
Rond 2: Urkedal, Frode Ol... · 29 Nov 2025
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Urkedal, Frode Olav Olsen
Swedish Team Championship... · 27 Nov 2025
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Ostlund, Joar
Swedish Team Championship... · 27 Nov 2025
L
Hamitevici, Vladimir(2427)
Jana Maciei Mem 2025 · 7 Jul 2025
L
Klimkowski, Jan(2511)
Jana Maciei Mem 2025 · 7 Jul 2025
Endgame Statistics
PRO143 endgames (52.2%)Unlock Endgame Statistics
23 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
866 Games
43%38%19%
MoveGamesPerformance%
1.e4
77762%
1.Nf3
4264%
1.c4
2365%
1.d4
2053%
1.g3Weak
317%
1.e3Strong
1100%