Chess Stalker — Free Chess Opponent Analysis

Analyze any Lichess, Chess.com or FIDE player's openings, weaknesses, blunder patterns and psychological profile. Train against a Twin Bot that replicates your opponent's style. Search by username or FIDE ID across 11 million+ games. Free to use, no signup required.

What you get

Opponent weakness analysis — opening repertoire, common blunders, time pressure patterns
Twin Bot — practice against an AI clone of your opponent's exact playing style
FIDE OTB database — 11 million+ tournament games and 1.7 million+ rated players
Stockfish-powered analysis with depth-25 evaluations
Multi-platform: Lichess, Chess.com, and FIDE in one place
Head-to-head comparison, Nemesis detection, Stalker Score

How it works

Search any Lichess, Chess.com username or FIDE player
Get instant scouting report with weaknesses and patterns
Prepare your strategy and practice against the Twin Bot

GM

Al-Mudahka, Mohd

QAT QAT·Born 1974·FIDE #12100030·1,304 Games

Classical25421,138 Games

Rapid245591 Games

Blitz238593 Games

Statistics

1304

Total

614

Wins

355

Draws

335

Losses

47%27%26%

Play Style

What you need to know before facing them

Very high accuracy: 88.8% average

Plays 4.3% better with white

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

Very precise: only 0.3 blunders/game

Dominates 1.e4 ♔ (64% in 647 games)

Deep Analysis

Stockfish 18 · Classical games · 34 analyzed

Accuracy by phase

Opening95.9%

Middlegame92.4%

Endgame93.6%

Clutch Factor

Performance under pressure

+8%

Winning (+2 or more)93%

11 Games

Equal position94%

6 Games

Losing (-2 or more)85%

18 Games

Problematic Pieces

Which pieces cause most errors?

♙

27%

15 errors

♖

18%

10 errors

♔

16%

9 errors

♞

16%

9 errors

♕

14%

8 errors

♗

9%

5 errors

Critical Moment

When does the first serious error occur?

Move 38average

1-15

16-25

26-35

36-45

46+

44% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

2

3

3

4

2

3

3

2

2

3

abcdefgh

Many

Few

Critical squares

f64 err

a63 err

b43 err

c23 err

e63 err

f6/a6 concentrate most errors. Force decisions in those zones.

Recent Games

W

Bluebaum, Matthias2660

Abu Dhabi Masters Online · 18 Aug 2025

0-1

L

Hulka, Valentyn2357

Abu Dhabi Masters Online · 18 Aug 2025

0-1

L

Panesar Vedant2419

Abu Dhabi Masters Online · 18 Aug 2025

0-1

W

Jasinski, Alexander2063

Abu Dhabi Masters Online · 18 Aug 2025

0-1

D

Guliev, Gasan2123

Abu Dhabi Masters Online · 18 Aug 2025

½-½

L

Mahdavi, Reza2454

Abu Dhabi Masters Online · 18 Aug 2025

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Ruy Lopez: Marshall

60.0%

15 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5

Sicilian: e6 Systems

56.1%

41 Games·Wins

1.e4 c5 2.Nf3 e6

Black

Sicilian: e6 Systems

49.6%

131 Games·Wins

1.e4 c5 2.Nf3 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#31Qc2??

Tactics

vs Martirosyan

OTB·2025

▶

#20Nfg3??

Tactics

vs Vincent

OTB·2025

▶

#54c5+??

Endgame

vs Lohia

OTB·2025

▶

#35Bf5??

Tactics

vs Maurizzi

OTB·2025

▶

#38Rd8??

Tactics

vs Loftgaard

OTB·2025

▶

#24Qxc2??

Tactics

vs Dicen

OTB·2025

▶

#35Nc4??

Tactics

vs Mamedov

Rapid·2025

▶

#10Bg3??

Tactics

vs Xu

Rapid·2025

▶

#35Bd4??

Tactics

vs Tsaknakis

Rapid·2025

▶

#37Qe7??

Tactics

vs Donchenko

Rapid·2025

Endgame Statistics

18 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2025

2024

2023

2017

2016

2014

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

667 Games

51%27%22%

Move	Games	Performance	%
1.e4	647		64%
1.d4 Strong	7		79%
1.b3 Strong	5		90%
1.Nc3 Strong	4		100%
1.Nf3 Strong	3		100%
1.g3 Strong	1		100%

1.e4

64%

647

1.d4

79%

7

1.b3

90%

5

1.Nc3

100%

4

1.Nf3

100%

3

1.g3

100%

1

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