GM
Stocek, Jiri
CZE·Born 1977·FIDE #304760·2,349 Games
CZE Classical24822,120 Games
Rapid2469151 Games
Blitz238378 Games
Statistics
2349
Total
1060
Wins
841
Draws
447
Losses
45%36%19%
Play Style
What you need to know before facing them
Elite accuracy: 93.3% average
Solid conversion: 87%
Very consistent (91%)
Very precise: only 0.1 blunders/game
Dominates 1.Nf3 ♔ (69% in 126 games)
Deep Analysis
Stockfish 18 · Classical games · 108 analyzed
Accuracy by phase
Opening96.1%
Middlegame93.9%
Endgame95.5%
Clutch Factor
Performance under pressure
Winning (+2 or more)95%
49 Games
Equal position95%
36 Games
Losing (-2 or more)88%
23 Games
Problematic Pieces
Which pieces cause most errors?
♕
22%
21 errors
♙
19%
18 errors
♖
19%
18 errors
♞
15%
15 errors
♗
14%
14 errors
♔
11%
11 errors
Critical Moment
When does the first serious error occur?
Move 48average
1-15
16-25
26-35
36-45
46+
38% of blunders occur between move 46+. Keep tension until that moment.
Error Heatmap
Where do most errors occur?
5
4
5
5
7
3
5
7
3
4
abcdefgh
Many
Few
Critical squares
e47 err
g57 err
b45 err
e55 err
e85 err
e4/g5 concentrate most errors. Force decisions in those zones.
Recent Games
L
Nemec, Jachym2471
ch-CZE 2026 · 16 May 2026
W
Krejci, Jan2495
ch-CZE 2026 · 15 May 2026
D
Vykouk, Jan2529
ch-CZE 2026 · 14 May 2026
L
Zilka, Stepan2516
ch-CZE 2026 · 13 May 2026
L
Hrbek, Stepan2466
ch-CZE 2026 · 12 May 2026
L
Kriebel, Tadeas2524
ch-CZE 2026 · 11 May 2026
Openings
Based on player games
Weaknesses
EXPLOIT!White
No significant weaknesses detected as White
Black
No significant weaknesses detected as Black
Strengths
AVOIDWhite
King's Indian: Classical
75.0%24 Games·Wins
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2
English: Anglo-Indian
73.3%15 Games·Wins
1.c4 Nf6 2.Nc3 g6
Black
English vs 1...e5
72.7%11 Games·Wins
1.c4 e5 2.Nc3 Bb4
Nimzo-Indian: Rubinstein
55.9%34 Games·Wins
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3
Critical Blunders
Tactical errors analyzed with Stockfish
10 errors
▶
#32Kg1??
Tactics
vs Pultinevicius
OTB·2025
▶
#15Nxe4??
Tactics
vs Krejci
OTB·2025
▶
#42Qh4??
Endgame
vs Davydov
OTB·2025
▶
#61a3??
Endgame
vs De Jong
OTB·2024
▶
#28Nxa4??
Tactics
vs Praggnanandhaa R
OTB·2024
▶
#35g5??
Tactics
vs Tabatabaei
OTB·2024
▶
#39Bxe4??
Tactics
vs Wemmers
OTB·2024
▶
#22Nd5??
Tactics
vs Gombocz
OTB·2024
▶
#33Rxa2??
Tactics
vs Maciejewski
OTB·2024
▶
#77Kc1??
Endgame
vs Krasteva
OTB·2024
Endgame Statistics
23 endgame categories analyzed — discover where they collapse under pressure
Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO2026
2025
2024
2023
2022
2021
PRO
8
76
5
4
3
2
1a
b
c
d
efgh1189 Games
49%36%15%
1.d4
68%716
1.e4
62%210
1.c4
65%136
1.Nf3
69%126
1.d3
0%1