Deuer, Marius

GER GER·Born 2008·FIDE #16236432·1,089 Games

Classical24911,016 Games

Rapid243617 Games

Blitz251656 Games

Play against Deuer, Marius's Twin

PRO

Uses their openings, level & style

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

Ready to play

1089 games analyzed

Statistics

Total

1089

Wins

403

Draws

299

Losses

376

37%27%35%

Play Style

What you need to know before facing them

Elite accuracy: 92.9% average

Low resilience (33%): Doesn't save lost positions

Very consistent (88%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (64% in 36 games)

Vulnerable to 1.c4 ♚ (only 30%)

Deep Analysis

Stockfish 18 · Classical games · 454 analyzed

Accuracy by phase

Opening

96.8%

Middlegame

93.4%

Endgame

94.9%

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

+6%

Winning (+2 or more)

95%161g

Equal position

95%170g

Losing (-2 or more)

89%123g

Performance under pressure

Problematic Pieces — Which pieces cause most errors?

26%

103 errors

20%

81 errors

19%

76 errors

13%

53 errors

12%

46 errors

10%

40 errors

Critical Moment — When does the first serious error occur?

Move 39 average

20%

33%

13%

33%

1-15

16-25

26-35

36-45

46+

33% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap — Where do most errors occur?

Few

Many

Errors mapped

126

Hotspot zone

e5 / f6

Critical squares

24 err

13 err

12 err

e5/f6 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

White63.6%Loses

1.b3 e5 2.Bb2 Nc6 — 1.b3 e5 2.Bb2 Nc6

11 Games · last played 3 years agoPlay this line

Black66.7%Loses

English: Anglo-Indian — 1.c4 Nf6 2.Nc3 c5

12 Games · last played 3 months agoPlay this line

Black57.1%Loses

Catalan — 1.d4 Nf6 2.c4 e6 3.g3

21 Games · last played 3 months agoPlay this line

Strengths

— avoid these lines

White59.3%Wins

Nimzo-Indian: Capablanca — 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd327 Games · last played 8 months ago

No consistent strengths detected as Black

Critical Blunders

10 errors · Stockfish

#30Nxd4??Tacticsvs IsikOTB · 2026

#69Ke5??Endgamevs KaasenOTB · 2026

#48Qb2+??Endgamevs De BoerOTB · 2025

#38Bb5??Tacticsvs PaklezaOTB · 2025

#55Kh4??Endgamevs BogdanovOTB · 2025

#37Nd6??Tacticsvs Alvarez SerranoOTB · 2025

#47Ng6??Endgamevs GrischukBlitz · 2025

#16dxe6??Tacticsvs MeierRapid · 2025

#36Re1+??Tacticsvs FroewisRapid · 2025

#33Nf3??Tacticsvs SubeljBlitz · 2025

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Endgame Statistics

PRO23 endgame categories analyzed

Endgame Statistics

Reveal weaknesses →

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire

Move arrowsmost-played moves

Starting Position

Stockfish

540 Games

42%27%31%

Move	Games	%
1.d4	368	55%
1.e4	63	55%
1.b3	39	53%
1.Nf3	36	64%
1.c4	25	54%
1.g3	5	40%
1.b4 Weak	1	0%
1.f4 Strong	1	100%
1.d3 Strong	1	100%
1.Nc3 Weak	1	0%

MoveGamesPerformance%

1.d4

368

55%

1.e4

55%

1.b3

53%

1.Nf3

64%

1.c4

54%

1.g3

40%

1.b4Weak

1.f4Strong

100%

1.d3Strong

100%

1.Nc3Weak