GM
Zilka, Stepan
CZE·Born 1988·FIDE #315303·1,449 Games
CZE Classical25261,256 Games
Rapid242683 Games
Blitz2462110 Games
Statistics
1449
Total
620
Wins
562
Draws
265
Losses
43%39%18%
Play Style
What you need to know before facing them
Elite accuracy: 94.4% average
High resilience (59%): Dangerous even when losing
Solid conversion: 87%
Very consistent (92%)
Very precise: only 0.0 blunders/game
Dominates 1.c4 ♔ (71% in 19 games)
Deep Analysis
Stockfish 18 · Classical games · 317 analyzed
Accuracy by phase
Opening96.9%
Middlegame93.9%
Endgame95.3%
Clutch Factor
Performance under pressure
Winning (+2 or more)95%
130 Games
Equal position95%
142 Games
Losing (-2 or more)91%
45 Games
Problematic Pieces
Which pieces cause most errors?
♙
21%
39 errors
♖
20%
38 errors
♗
18%
34 errors
♕
18%
35 errors
♔
12%
22 errors
♞
12%
22 errors
Critical Moment
When does the first serious error occur?
Move 45average
1-15
16-25
26-35
36-45
46+
50% of blunders occur between move 26-35. Keep tension until that moment.
Error Heatmap
Where do most errors occur?
5
5
7
7
7
7
5
6
8
5
abcdefgh
Many
Few
Critical squares
e28 err
c57 err
e47 err
e57 err
h67 err
e2/c5 concentrate most errors. Force decisions in those zones.
Recent Games
D
Stalmach, Richard2433
ch-CZE 2026 · 16 May 2026
D
Nemec, Jachym2471
ch-CZE 2026 · 15 May 2026
D
Krejci, Jan2495
ch-CZE 2026 · 14 May 2026
W
Stocek, Jiri2500
ch-CZE 2026 · 13 May 2026
W
Vykouk, Jan2529
ch-CZE 2026 · 12 May 2026
D
Hrbek, Stepan2466
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
Italian: Giuoco Piano
80.0%10 Games·Wins
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5
Caro-Kann
63.2%19 Games·Wins
1.e4 c6 2.Nf3 d5
Black
Sicilian: e6 Systems
71.4%14 Games·Wins
1.e4 c5 2.Nf3 e6
Ruy Lopez: Exchange
60.0%10 Games·Wins
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6
Critical Blunders
Tactical errors analyzed with Stockfish
10 errors
▶
#35Rc8??
Tactics
vs Rubes
Blitz·2025
▶
#39Kh7??
Tactics
vs Pulpan
Blitz·2025
▶
#28Qf4??
Tactics
vs Brozka
Blitz·2025
▶
#21Qe8??
Tactics
vs Dragnev
OTB·2025
▶
#29Bxf8??
Tactics
vs Bouska
OTB·2025
▶
#27Ra6??
Tactics
vs Vykouk
Rapid·2025
▶
#35Nc5??
Tactics
vs Finek
OTB·2025
▶
#38Rg4??
Tactics
vs Beerdsen
OTB·2025
▶
#29Bxf2+??
Tactics
vs Toczek
OTB·2024
▶
#33h6??
Tactics
vs Kempinski
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
efgh737 Games
48%36%16%
1.e4
66%357
1.d4
68%333
1.Nf3
52%24
1.c4
71%19
1.c3
50%2
1.b3
50%2