Feuerstack, Aljoscha

GER GER·Born 1988·FIDE #4681932·1,279 Games

FIDE OTB · #4681932 · 1,279 Games

Classical24601,234 g Games

Rapid242721 g Games

Blitz246224 g Games

Play against Feuerstack's Twin

PRO

Uses their openings, level & style

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

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1279 games analyzed

Statistics

Total

1279

Wins

584

Draws

346

Losses

348

46%27%27%

Play Style

before facing themWhat you need to know before facing them

Elite accuracy: 92.8% average

Solid conversion: 81%

Very consistent (86%)

Very precise: only 0.1 blunders/game

Dominates 1.d4 ♔ (67% in 43 games)

Deep Analysis

Stockfish 18 · Classical games · 214 analyzed

Accuracy by phase

Opening

96.7%

Middlegame

93.2%

Endgame

94.8%

Clutch Factor

+5%

Winning (+2)Winning (+2)

94%90g

EqualEqual position

95%71g

Losing (−2)Losing (−2)

89%53g

Accuracy under pressure

Problematic Pieces — which cause most errors?

23%

47 err

19%

39 err

18%

37 err

17%

36 err

14%

28 err

19 err

Critical Moment

Move 30 avg

1-15

43%

16-25

29%

26-35

29%

36-45

46+

43% of blunders after move 16-25 — keep the tension until then.of blunders occur in moves 16-25. Keep the tension until that moment.

Error Heatmap — where do errors occur?

Few

Many

Errors mapped

Hotspot zone

d5 / e4

Critical squares

9 err

8 err

7 err

d5/e4 account for most of the errors. Force decisions in those zones.

Openings

1,279 GamesBased on 1,279 player games

Weaknesses

— exploit these— exploit these lines

No significant weaknesses detected as white

asblack55.6%Losses

London System — 1.d4 d5 2.Bf4 Nf6

9 Games · Low sample · last played 5 months agoPlay this line

Strengths

— avoid these— avoid these lines

aswhite62.5%Wins

Sicilian: e6 Systems — 1.e4 c5 2.Nf3 e632 Games · last played 5 months ago

32 Games · last played 5 months ago

aswhite61.5%Wins

Caro-Kann: Panov-Botvinnik — 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c413 Games · last played 10 months ago

13 Games · last played 10 months ago

asblack54.5%Wins

Caro-Kann: Panov-Botvinnik — 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c411 Games · last played 10 months ago

11 Games · last played 10 months ago

Critical Blunders

10 errors · Stockfish

#22Bd4??Tacticsvs IdaniOTB · 2026

#24Qg3??Tacticsvs JiangOTB · 2025

#30Be4??Tacticsvs BlomqvistOTB · 2025

#31Rc1??Tacticsvs Van ForeestOTB · 2025

#32N7e5??Tacticsvs NakamuraOTB · 2025

#55Rd1??Endgamevs Ravi Krishna GOTB · 2025

#39Nd5??Tacticsvs DautovOTB · 2025

#19Qxc7??Tacticsvs YeritsyanOTB · 2024

#33Be3??Tacticsvs KnuedelRapid · 2024

#18Ndb3??Tacticsvs PechacOTB · 2024

Recent Games

1,279 Games

Loss

Idani, Pouya(2599)

Bundesliga 2025-26 · 26 Apr 2026

0-1

Win

Sankalp Gupta(2559)

Bundesliga 2025-26 · 25 Apr 2026

1-0

Loss

Huschenbeth, Niclas(2591)

Bundesliga 2025-26 · 24 Apr 2026

1-0

Draw

Hracek, Zbynek(2546)

German Bundesliga 2025-26 · 22 Mar 2026

½-½

Win

Maksimovic, Bojan(2533)

1. BL Pauli · 21 Mar 2026

1-0

Win

Danzer, George(2166)

Titled Tue 17th Mar 2026 · 17 Mar 2026

1-0

Endgame Statistics

PRO123 endgames (55.7%)

Unlock Endgame Statistics

0 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

631 Games

54%24%22%

Move	Games	%
1.e4	580	66%
1.d4	44	66%
1.Nf3	3	67%
1.b3	3	67%
1.c4Strong	1	100%

MoveGamesPerformance%

1.e4

580

66%

1.d4

66%

1.Nf3

67%

1.b3

67%

1.c4Strong

100%