IM

Carlstedt, Jonathan

GER GER·Born 1990·FIDE #24614386·1,541 Games

Classical24311,415 Games

Rapid235832 Games

Blitz235794 Games

Statistics

1541

Total

712

Wins

413

Draws

415

Losses

46%27%27%

Play Style

What you need to know before facing them

Elite accuracy: 92.6% average

High resilience (59%): Dangerous even when losing

Solid conversion: 85%

Very consistent (89%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (68% in 30 games)

Deep Analysis

Stockfish 18 · Classical games · 206 analyzed

Accuracy by phase

Opening95.5%

Middlegame93.0%

Endgame94.6%

Clutch Factor

Performance under pressure

+6%

Winning (+2 or more)94%

118 Games

Equal position93%

51 Games

Losing (-2 or more)88%

37 Games

Problematic Pieces

Which pieces cause most errors?

♖

22%

43 errors

♙

21%

41 errors

♕

16%

31 errors

♞

15%

29 errors

♗

13%

25 errors

♔

13%

26 errors

Critical Moment

When does the first serious error occur?

Move 40average

1-15

16-25

26-35

36-45

46+

33% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

6

6

7

6

5

6

8

5

8

9

abcdefgh

Many

Few

Critical squares

d29 err

d48 err

g58 err

f67 err

e86 err

d2/d4 concentrate most errors. Force decisions in those zones.

Recent Games

L

Akkara, Omer2114

Titled Tue 10th Mar 2026 · 10 Mar 2026

0-1

W

Masague Artero, Guerau2400

Titled Tue 10th Mar 2026 · 10 Mar 2026

1-0

W

Vardi, Ilan

Titled Tue 10th Mar 2026 · 10 Mar 2026

1-0

L

Nosach, Roman Al2214

Titled Tue 10th Mar 2026 · 10 Mar 2026

1-0

W

Halac, Matias2261

Titled Tue 10th Mar 2026 · 10 Mar 2026

0-1

W

Janampa Javier, Brandon Daniel1969

Titled Tue 10th Mar 2026 · 10 Mar 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

London System

54.5%

11 Games·Loses

1.d4 d5 2.Bf4 Nf6

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Slav Defense

66.7%

12 Games·Wins

1.d4 d5 2.c4 c6

Black

Italian: Two Knights

68.8%

16 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6

Sicilian: d6 Systems

49.3%

69 Games·Wins

1.e4 c5 2.Nf3 d6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#94Kg6??

Endgame

vs Lick

OTB·2025

▶

#23Rxf8+??

Tactics

vs Richter

OTB·2025

▶

#16gxf5??

Tactics

vs Schoen

OTB·2024

▶

#43Qa4??

Endgame

vs Helms

OTB·2024

▶

#32Qf5??

Tactics

vs Fabig

OTB·2024

▶

#37Qd3??

Tactics

vs Gschnitzer

OTB·2024

▶

#57Qxa4??

Endgame

vs Zeng

OTB·2024

▶

#29h5??

Tactics

vs Hoellman

OTB·2024

▶

#45Nd7??

Endgame

vs Bronstein

Rapid·2023

▶

#52Rb6??

Endgame

vs Dordevic

Rapid·2023

Endgame Statistics

23 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

772 Games

47%27%26%

Move	Games	Performance	%
1.c4	463		58%
1.d4	228		63%
1.e4	45		66%
1.Nf3	30		68%
1.g3 Strong	3		83%
1.e3 Strong	2		100%
1.f4 Weak	1		0%

1.c4

58%

463

1.d4

63%

228

1.e4

66%

45

1.Nf3

68%

30

1.g3

83%

3

1.e3

100%

2

1.f4

0%

1

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