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

Vajda, Levente

ROU ROU·Born 1981·FIDE #1203975·1,829 Games

Classical25341,801 Games

Rapid253919 Games

Blitz25739 Games

Statistics

1829

Total

846

Wins

620

Draws

363

Losses

46%34%20%

Play Style

What you need to know before facing them

Elite accuracy: 94.6% average

Very consistent (94%)

Very precise: only 0.0 blunders/game

Dominates 1.e4 ♔ (68% in 784 games)

Deep Analysis

Stockfish 18 · Classical games · 23 analyzed

Accuracy by phase

Opening96.4%

Middlegame94.9%

Endgame96.0%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)96%

5 Games

Equal position95%

11 Games

Losing (-2 or more)92%

7 Games

Problematic Pieces

Which pieces cause most errors?

♙

50%

4 errors

♗

12%

1 errors

♔

12%

1 errors

♕

12%

1 errors

♖

12%

1 errors

♞

0%

0 errors

Critical Moment

When does the first serious error occur?

Move 30average

1-15

16-25

26-35

36-45

46+

Error Heatmap

Where do most errors occur?

2

1

1

1

1

1

1

abcdefgh

Many

Few

Critical squares

b62 err

a51 err

c31 err

c41 err

e61 err

b6/a5 concentrate most errors. Force decisions in those zones.

Recent Games

L

Licznerski, Lukasz2450

Titled Tue 7th Jun Late · 7 Jun 2022

1-0

L

Stojanovski, Sandi2225

Titled Tue 7th Jun Early · 7 Jun 2022

1-0

W

Pesotskiy, Mikhail2217

Titled Tue 7th Jun Late · 7 Jun 2022

1-0

W

Adewumi, Tanitoluwa2305

Titled Tue 7th Jun Late · 7 Jun 2022

1-0

D

Bringas Gomez, Artai2203

Titled Tue 7th Jun Late · 7 Jun 2022

½-½

W

Ansh M Shah2143

Titled Tue 7th Jun Late · 7 Jun 2022

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

Italian: Giuoco Piano

65.4%

26 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5

Petroff: Main Line

66.7%

12 Games·Wins

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6

Black

Italian: Giuoco Piano

61.0%

41 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5

Scotch: Mieses

55.0%

20 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6

Critical Blunders

Tactical errors analyzed with Stockfish

2 errors

▶

#52Kf6??

Endgame

vs Socko

OTB·2019

▶

#18f4??

Tactics

vs Aronian

OTB

Endgame Statistics

6 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2022

2021

2020

2019

2018

2017

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

926 Games

51%32%17%

Move	Games	Performance	%
1.e4	784		68%
1.Nf3	135		63%
1.d4	5		70%
1.c4	2		50%

1.e4

68%

784

1.Nf3

63%

135

1.d4

70%

5

1.c4

50%

2

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