Bromberger, Stefan

GER GER·Born 1982·FIDE #4635248·1,209 Games

Classical24751,208 Games

Rapid25110 Games

Blitz—1 Games

Play against Bromberger, Stefan's Twin

PRO

Uses their openings, level & style

Practice against a bot that uses their real openings and playing style

Ready to play

1209 games analyzed

Statistics

Total

1209

Wins

480

Draws

474

Losses

255

40%39%21%

Play Style

What you need to know before facing them

Elite accuracy: 93.8% average

Plays 2.2% better with black

Solid conversion: 84%

Very consistent (91%)

Very precise: only 0.0 blunders/game

Dominates 1.e4 ♔ (65% in 300 games)

Deep Analysis

Stockfish 18 · Classical games · 58 analyzed

Accuracy by phase

Opening

96.5%

Middlegame

93.9%

Endgame

95.6%

Clutch Factor — Move accuracy when winning vs. equal vs. losing — does their level drop when the game turns against them?

+5%

Winning (+2 or more)

94%16g

Equal position

96%31g

Losing (-2 or more)

89%11g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

29%

12 errors

24%

10 errors

19%

8 errors

14%

6 errors

3 errors

Critical Moment — When does the first serious error occur?

Move 28 average

100%

1-15

16-25

26-35

36-45

46+

100% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap — Where do most errors occur?

Few

Many

Errors mapped

Hotspot zone

c5 / d6

Critical squares

3 err

2 err

c5/d6 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

No significant weaknesses detected as White

Black57.1%Loses

King's Indian: Classical — 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5

14 Games · last played 9 years agoPlay this line

Strengths

— avoid these lines

White60.0%Wins

King's Indian: Main Line — 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O15 Games · last played 9 years ago

White60.0%Wins

Sicilian: Dragon — 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g610 Games · last played 10 years ago

Black49.2%Wins

Sicilian: Najdorf — 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a663 Games · last played 2 years ago

Critical Blunders

5 errors · Stockfish

#41Bxc3??Endgamevs FroewisOTB · 2025

#27Bxc5??Tacticsvs StankovicOTB · 2023

#58Kc2??Endgamevs RozentalisOTB · 2022

#15Rxe6+??Tacticsvs RomanovOTB · 2022

#29Nxc5??Tacticsvs WomackaOTB · 2019

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Endgame Statistics

PRO18 endgame categories analyzed

Endgame Statistics

Reveal weaknesses →

18 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

614 Games

46%36%18%

Move	Games	%
1.e4	300	65%
1.d4	265	63%
1.Nf3	47	65%
1.c4	2	50%

MoveGamesPerformance%

1.e4

300

65%

1.d4

265

63%

1.Nf3

65%

1.c4

50%