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

U

IM

Ulanov, Alexandr

RUS RUS·Born 1993·FIDE #24107646·331 Games

Classical2463308 Games

Rapid25280 Games

Blitz244323 Games

Play against Ulanov, Alexandr's Twin

PRO

Uses their openings, level & style

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

Ready to play

331 games analyzed

Statistics

Total

331

Wins

184

Draws

73

Losses

74

56%22%22%

Deep Analysis

Stockfish 18 · Classical games · 0 analyzed

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

Insufficient data

Problematic Pieces — Which pieces cause most errors?

Insufficient data

Critical Moment — When does the first serious error occur?

Insufficient data

Error Heatmap — Where do most errors occur?

Insufficient data

Openings

Based on player games

Weaknesses

— exploit these lines

No significant weaknesses detected as White

No significant weaknesses detected as Black

Strengths

— avoid these lines

No consistent strengths detected as White

Black46.2%Wins

Caro-Kann — 1.e4 c6 2.d4 d513 Games · last played 11 years ago

Critical Blunders

2 errors · Stockfish

#40Qf6??Tacticsvs Tabuenca MendataurigoitiaBlitz · 2021

#18Qg3??Tacticsvs Santos LatasaBlitz · 2021

Recent Games

331 Games

L

Voloshkin, Daniil(1627)

2nd Gran Canaria Online · 27 Feb 2022

1-0

W

Tabuenca Mendataurigoitia, Daniel(1865)

Gran Canaria May Blitz · 16 May 2021

0-1

D

Del Prado Rodriguez, Xulio(2149)

Gran Canaria May Blitz · 16 May 2021

½-½

D

Mammadov,Z(2417)

Gran Canaria May Blitz · 16 May 2021

½-½

W

Mammadova, Gulnar(2382)

Gran Canaria May Blitz · 16 May 2021

0-1

D

Vokhidov, Shamsiddin(2529)

Gran Canaria May Blitz · 16 May 2021

½-½

Endgame Statistics

PRO7 endgame categories analyzed

Endgame Statistics

Reveal weaknesses →

7 endgame categories analyzed — discover where they collapse under pressure

Repertoire

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Move arrowsmost-played moves

Starting Position

Stockfish

167 Games

60%23%17%

Move	Games	Performance	%
1.d4 Strong	121		73%
1.Nf3 Strong	25		72%
1.e4	15		70%
1.c4	3		50%
1.g3 Strong	2		100%
1.b3 Weak	1		0%

MoveGamesPerformance%

1.d4Strong

121

73%

1.Nf3Strong

25

72%

1.e4

15

70%

1.c4

3

50%

1.g3Strong

2

100%

1.b3Weak

1

0%

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