IM

Vlasak, Lukas

CZE CZE·Born 1993·FIDE #324752·923 Games

Classical2417893 Games
Rapid237319 Games
Blitz233211 Games

Statistics

923

Total

298

Wins

430

Draws

194

Losses

32%47%21%

Play Style

What you need to know before facing them

Elite accuracy: 94.7% average
Solid conversion: 84%
Very consistent (92%)
Very precise: only 0.0 blunders/game
Dominates 1.d4 ♔ (66% in 101 games)
Vulnerable to 1.c4 ♚ (only 38%)

Deep Analysis

Stockfish 18 · Classical games · 156 analyzed

Accuracy by phase
Opening96.5%
Middlegame94.6%
Endgame95.5%

Clutch Factor

Performance under pressure

+5%
Winning (+2 or more)95%
56 Games
Equal position95%
83 Games
Losing (-2 or more)90%
17 Games

Problematic Pieces

Which pieces cause most errors?

♖
25%
17 errors
♕
22%
15 errors
♞
19%
13 errors
♙
16%
11 errors
♔
10%
7 errors
♗
9%
6 errors

Critical Moment

When does the first serious error occur?

Move 47average
1-15
16-25
26-35
36-45
46+
50% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

3
3
3
3
3
4
4
4
2
2
abcdefgh
Many
Few
Critical squares
c44 err
e54 err
f34 err
b53 err
c53 err
c4/e5 concentrate most errors. Force decisions in those zones.

Recent Games

D
Zvara, Petr2337

TCh-CZE 1 Liga Zapad · 12 Apr 2026

½-½
L
Piesik, Piotr2404

Å¡achy.cz Extraliga 2025-... · 28 Mar 2026

1-0
D
Stalmach, Richard2410

TCh-CZE 1 Liga Zapad · 22 Mar 2026

½-½
D
Svoboda, Vaclav2373

šachy.cz Extraliga 2025-2... · 22 Feb 2026

½-½
D
Kriebel, Tadeas2515

šachy.cz Extraliga 2025-2... · 21 Feb 2026

½-½
W
Brejnik, Gustav2231

TCh-CZE 1 Liga Zapad · 15 Feb 2026

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!
White
Ruy Lopez: Closed
41.2%
17 Games·Loses

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7

Black

No significant weaknesses detected as Black

Strengths

AVOID
White
Sicilian: Dragon
60.0%
10 Games·Wins

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6

Ruy Lopez: Marshall
60.0%
10 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5

Black

No consistent strengths detected as Black

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors
▶
#57Nf6??
Endgame
vs Semling
OTB·2025
▶
#34Ne4??
Tactics
vs Jirka
Rapid·2025
▶
#33Rxa7??
Tactics
vs Rubes
Rapid·2025
▶
#42f3??
Endgame
vs Sabol
OTB·2025
▶
#23Rfe8??
Tactics
vs Kovacevic
OTB·2025
▶
#60Rd5??
Endgame
vs Rubes
OTB·2024
▶
#36Rxb5??
Tactics
vs Wenninger
OTB·2024
▶
#33Nxb4??
Tactics
vs Stalmach
OTB·2023
▶
#36Qf5??
Tactics
vs Dudek
OTB·2023
▶
#49g6??
Endgame
vs Romanov
OTB·2022
Endgame Statistics

21 endgame categories analyzed — discover where they collapse under pressure

Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO
·
2026
2025
2024
2023
2022
2021
PRO
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Starting Position
473 Games
37%44%19%
1.e4
57%
319
1.d4
66%
101
1.Nf3
60%
35
1.c4
47%
18
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