Jan Bernasek
GM
Czechiaborn 1986FIDE ID 311995
2501Classical
2505Rapid
2430Blitz
Statistics
1,329games
592 wins · 45%460 draws · 35%276 losses · 21%
Jan Bernasek's playing style
before facing themWhat you need to know before facing themElite accuracy: 93.2% average
Solid conversion: 91%
Very consistent (91%)
Very precise: only 0.1 blunders/game
Dominates 1.e4 as 
(71% in 62 games)
(71% in 62 games)Play against Bernasek's Twin
Their real openings, level & style
Practice against a bot that uses their real openings and playing style
Based on 1,329 games
Deep Analysis
Stockfish 18 · Classical · 131 analyzedStockfish 18 · Classical games · 131 analyzedAccuracy by phase
Opening
96.1%
Middlegame
92.9%
Endgame
94.7%
Clutch Factor
+5%Winning (+2)Winning (+2)
94%57g
EqualEqual position
95%48g
Losing (−2)Losing (−2)
89%26g
Accuracy under pressure barely drops when losing.
Problematic Pieces
26%
29 err
21%
23 err
20%
22 err
14%
16 err
13%
15 err
6%
7 err
Critical Moment
Move 49 avg0%1-15
0%16-25
43%26-35
0%36-45
57%46+
57% of blunders occur after move 46. Keep tension until then.of blunders occur after move 46. Keep tension until then.
Error Heatmap
6
7
7
FewMany
Errors mapped
48
Hotspot zone
c4 / f4
Critical squares
c4
7 err
f4
7 err
g5
6 err
b5
5 err
d4
4 err
c4/f4 concentrate most errors. Force decisions in those zones.
Openings of Jan Bernasek
1,329 gamesBased on 1,329 player gamesWeaknesses
· exploit these· exploit these linesaswhite44.4%losses
Italian: Two Knights · 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6
9 games · low sample · last played 17 years agoPlay this line
No significant weaknesses detected as black
Strengths
· avoid these· avoid these linesaswhite75.0%wins
Modern Benoni · 1.d4 Nf6 2.c4 c5 3.d5 e612 g12 games · last played 7 years ago
aswhite62.9%wins
Benoni · 1.d4 Nf6 2.c4 c535 g35 games · last played 2 years ago
asblack53.8%wins
Sicilian: Taimanov · 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc613 g13 games · last played 3 years ago
asblack50.0%wins
Pirc Defense · 1.e4 d6 2.d4 Nf616 g16 games · last played 5 years ago
How to beat Jan Bernasek: weaknesses & blunders
10 errors · Stockfish#28Nfd8??vs RydlOTB · 2026
#57Na5+??vs StocekOTB · 2026
#38Qc5??vs LudvikOTB · 2025
#40Qb7??vs NemecOTB · 2025
#29Rxg5+??vs PaulusOTB · 2025
#32Qb8+??vs BabulaBlitz · 2024
#48Bxc6??vs BuresBlitz · 2024
#33a5??vs KusaBlitz · 2024
#30Qc4+??vs HavelkaOTB · 2024
#56Kc4??vs NguyenOTB · 2024
Recent games of Jan Bernasek
1,329 gamesPetrova, Kristyna(2256)
TCh-CZE 1 Liga Zapad · 12 Apr 2026
Havelka, Josef(2341)
TCh-CZE Extraliga 2025-26 · 29 Mar 2026
Ragger, Markus(2560)
Å¡achy.cz Extraliga 2025-... · 28 Mar 2026
Samunenkov, Ihor(2598)
Round 9: Bernasek, Jan - ... · 27 Mar 2026
Stehno, Pavel(2306)
TCh-CZE 1 Liga Zapad · 22 Mar 2026
Burdalev, Kirill(2313)
TCh-CZE 1 Liga Zapad · 1 Mar 2026
Jan Bernasek's endgames
78 endgames (52.7%) · avoid Queen vs Pieces (20%)Unlock Endgame Statistics
All their endgames: discover where they collapse under pressure
Repertoire
PROTime controls · Years · Events
1,329 games in scope
8
76
5
4
3
2
1a
b
c
defghMove arrowsmost-played moves
SF18
657 games
53%31%16%
MovegamesLastPerf%
1.d4
541Mar 202669%
1.e4Strong
62Mar 202671%
1.Nf3
27Jan 202367%
1.c4
22Dec 202368%
1.b3Strong
2Apr 202475%
1.d3
1Jul 200550%
1.f4Strong
1Apr 2025100%
1.e3Strong
1Dec 2010100%