GM

Gdanski, Jacek

POL POL·Born 1970·FIDE #1100106·1,730 Games

Classical24781,529 Games
Rapid233796 Games
Blitz2294105 Games

Statistics

1730

Total

666

Wins

665

Draws

399

Losses

38%38%23%

Play Style

What you need to know before facing them

Elite 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 analyzed

Accuracy by phase
Opening95.8%
Middlegame91.9%
Endgame93.8%

Clutch Factor

Performance under pressure

+6%
Winning (+2 or more)93%
86 Games
Equal position93%
55 Games
Losing (-2 or more)87%
41 Games

Problematic Pieces

Which pieces cause most errors?

♖
23%
52 errors
♙
19%
43 errors
♕
18%
40 errors
♔
15%
33 errors
♞
13%
30 errors
♗
12%
27 errors

Critical Moment

When does the first serious error occur?

Move 38average
1-15
16-25
26-35
36-45
46+
35% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

8
6
7
8
11
7
8
6
7
6
abcdefgh
Many
Few
Critical squares
e511 err
c68 err
d58 err
f48 err
b37 err
e5/c6 concentrate most errors. Force decisions in those zones.

Recent Games

L
Ostlund, Joar2338

Rond 3: Gdanski, Jacek - ... · 30 Nov 2025

0-1
L
Urkedal, Frode Olav Olsen2570

Rond 2: Urkedal, Frode Ol... · 29 Nov 2025

1-0
L
Urkedal, Frode Olav Olsen

Swedish Team Championship... · 27 Nov 2025

1-0
L
Ostlund, Joar

Swedish Team Championship... · 27 Nov 2025

0-1
L
Hamitevici, Vladimir2427

Jana Maciei Mem 2025 · 7 Jul 2025

0-1
L
Klimkowski, Jan2511

Jana Maciei Mem 2025 · 7 Jul 2025

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!
White
Sicilian: Classical
46.7%
15 Games·Loses

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6

Black

No significant weaknesses detected as Black

Strengths

AVOID
White
Sicilian: Closed
57.6%
85 Games·Wins

1.e4 c5 2.Nc3 Nc6

French: Tarrasch
57.1%
14 Games·Wins

1.e4 e6 2.d4 d5 3.Nd2

Black
French: Tarrasch
45.9%
85 Games·Wins

1.e4 e6 2.d4 d5 3.Nd2

Sicilian: e6 Systems
46.2%
26 Games·Wins

1.e4 c5 2.Nf3 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors
▶
#30Qxc7??
Tactics
vs Sengupta
OTB·2025
▶
#23Qc8??
Tactics
vs Rekuc
OTB·2025
▶
#29Ne5??
Tactics
vs Leniart
OTB·2025
▶
#14hxg6??
Tactics
vs Hamitevici
OTB·2025
▶
#14h4??
Tactics
vs Chmura
OTB·2025
▶
#22Qxe5??
Tactics
vs Frank
OTB·2025
▶
#32Nh2??
Tactics
vs Medhus
OTB·2025
▶
#23Qc2??
Tactics
vs Storme
OTB·2025
▶
#38Rf5??
Tactics
vs Syrkiewicz
OTB·2024
▶
#33h4??
Tactics
vs Tsiapko
OTB·2024
Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO
·
2025
2024
2023
2022
2021
2020
PRO
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Starting Position
866 Games
43%38%19%
1.e4
62%
777
1.Nf3
64%
42
1.c4
65%
23
1.d4
53%
20
1.g3
17%
3
1.e3
100%
1
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