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-Sayed, Mohammed

QAT QAT·Born 1981·FIDE #12100196·1,332 Games

Classical24841,028 Games

Rapid2480131 Games

Blitz2535173 Games

Statistics

1332

Total

534

Wins

353

Draws

445

Losses

40%27%33%

Play Style

What you need to know before facing them

Plays 4.4% better with black

Very precise: only 0.3 blunders/game

Dominates 1.e4 ♔ (58% in 272 games)

Vulnerable to 1.d4 ♚ (only 47%)

Deep Analysis

Stockfish 18 · Classical games · 6 analyzed

Accuracy by phase

Opening96.8%

Middlegame91.3%

Endgame89.9%

Clutch Factor

Performance under pressure

+8%

Winning (+2 or more)89%

1 Games

Equal position96%

1 Games

Losing (-2 or more)82%

4 Games

Problematic Pieces

Which pieces cause most errors?

♙

33%

4 errors

♕

25%

3 errors

♗

17%

2 errors

♖

17%

2 errors

♞

8%

1 errors

♔

0%

0 errors

Critical Moment

When does the first serious error occur?

Move 32average

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?

2

1

1

1

1

1

1

1

1

1

abcdefgh

Many

Few

Critical squares

e82 err

a41 err

d51 err

d61 err

d71 err

e8/a4 concentrate most errors. Force decisions in those zones.

Recent Games

W

Martinez Pla, Xavier2261

Titled Tue 5th Nov Late · 5 Nov 2024

0-1

L

Korchynskyi, Mykola2330

Titled Tue 5th Nov Late · 5 Nov 2024

0-1

D

Vovk, Orest2315

Titled Tue 5th Nov Late · 5 Nov 2024

½-½

L

Goltsev, Dmitry2226

Titled Tue 5th Nov Late · 5 Nov 2024

1-0

W

Bonin, Jay2127

Titled Tue 5th Nov Late · 5 Nov 2024

1-0

W

Asish Panda1903

Titled Tue 5th Nov Late · 5 Nov 2024

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Sicilian: Dragon

44.4%

9 GamesLow sample·Loses

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6

Nimzo-Indian: Classical

41.0%

39 Games·Loses

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Queen's Gambit Declined

57.7%

26 Games·Wins

1.d4 d5 2.c4 e6

Italian: Two Knights

58.3%

12 Games·Wins

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

Black

King's Indian: Classical

47.6%

21 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5

Sicilian: Rossolimo

47.1%

17 Games·Wins

1.e4 c5 2.Nf3 Nc6 3.Bb5

Critical Blunders

Tactical errors analyzed with Stockfish

4 errors

▶

#45Kg7??

Endgame

vs Grischuk

Blitz·2018

▶

#37d6??

Tactics

vs Firouzja

OTB·2015

▶

#28Bg7??

Tactics

vs Shirov

OTB·2013

▶

#35Rd7??

Tactics

vs Mamedyarov

OTB·2005

Endgame Statistics

5 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2024

2018

2017

2016

2015

2014

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

681 Games

43%28%29%

Move	Games	Performance	%
1.d4	371		57%
1.e4	272		58%
1.Nf3	32		48%
1.c4	4		50%
1.g3	2		50%

1.d4

57%

371

1.e4

58%

272

1.Nf3

48%

32

1.c4

50%

4

1.g3

50%

2

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