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

IM

Wang, Puchen

NZL NZL·Born 1990·FIDE #4300904·419 Games

Classical2455400 Games

Rapid24439 Games

Blitz246910 Games

Statistics

419

Total

169

Wins

157

Draws

93

Losses

40%37%22%

Deep Analysis

Stockfish 18 · Classical games · 0 analyzed

Clutch Factor

Performance under pressure

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

Recent Games

L

Ma, Qun2606

123. ch-NZL Blitz 2016 · 12 Jan 2016

1-0

D

Fier, Alexandr2607

123. ch-NZL Blitz 2016 · 12 Jan 2016

½-½

W

Koop, Thorben2417

123. ch-NZL Blitz 2016 · 12 Jan 2016

1-0

L

Ju, Wenjun2548

123. ch-NZL Rapid 2016 · 12 Jan 2016

1-0

W

Noble, Mark Frederick2241

123. ch-NZL Blitz 2016 · 12 Jan 2016

0-1

W

Dive, Russell John2311

123. ch-NZL Blitz 2016 · 12 Jan 2016

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Queen's Gambit Accepted

50.0%

8 GamesLow sample·Loses

1.d4 d5 2.c4 dxc4

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Slav: Semi-Slav

64.3%

14 Games·Wins

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3

Black

No consistent strengths detected as Black

Critical Blunders

Tactical errors analyzed with Stockfish

No blunders recorded

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2016

2015

2014

2013

2012

2011

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

210 Games

45%35%20%

Move	Games	Performance	%
1.d4	108		69%
1.e4	69		55%
1.Nf3	21		60%
1.c4	11		55%
1.f4 Weak	1		0%

1.d4

69%

108

1.e4

55%

69

1.Nf3

60%

21

1.c4

55%

11

1.f4

0%

1

🍪 Cookies · Chess Stalker uses technical cookies (required for operation) and analytical cookies (to improve the service). Analytical cookies are optional.