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

Chernobay, Artem

RUS RUS·Born 1989·FIDE #4167406·924 Games

Classical2454907 Games

Rapid242315 Games

Blitz24332 Games

Statistics

924

Total

454

Wins

152

Draws

318

Losses

49%16%34%

Play Style

What you need to know before facing them

Elite accuracy: 93.5% average

Very consistent (92%)

Very precise: only 0.0 blunders/game

Dominates 1.c4 ♚ (69% in 16 games)

Deep Analysis

Stockfish 18 · Classical games · 36 analyzed

Accuracy by phase

Opening96.5%

Middlegame93.3%

Endgame95.6%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)95%

12 Games

Equal position94%

12 Games

Losing (-2 or more)91%

12 Games

Problematic Pieces

Which pieces cause most errors?

♗

29%

7 errors

♞

25%

6 errors

♖

21%

5 errors

♙

17%

4 errors

♕

8%

2 errors

♔

0%

0 errors

Critical Moment

When does the first serious error occur?

Move 45average

1-15

16-25

26-35

36-45

46+

100% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

1

1

2

1

1

3

1

2

1

1

abcdefgh

Many

Few

Critical squares

f43 err

c42 err

d32 err

b11 err

c51 err

f4/c4 concentrate most errors. Force decisions in those zones.

Recent Games

L

Jumabayev, Rinat2551

Titled Tue 27th May Late · 27 May 2025

1-0

W

Calvo Gonzalez, Jose Felix2168

Titled Tue 27th May Late · 27 May 2025

0-1

L

Marchesich, Giovanni2219

Titled Tue 27th May Late · 27 May 2025

1-0

W

Barrientos, Ernesto2027

Titled Tue 27th May Late · 27 May 2025

0-1

L

Mendes Aaron Reeve2335

Titled Tue 27th May Late · 27 May 2025

0-1

W

Tang, Andrew2529

Titled Tue 27th May Late · 27 May 2025

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

French: Winawer

62.5%

8 GamesLow sample·Loses

1.e4 e6 2.d4 d5 3.Nc3 Bb4

Slav: Semi-Slav

52.4%

21 Games·Loses

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

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Caro-Kann: Advance

72.2%

18 Games·Wins

1.e4 c6 2.d4 d5 3.e5

King's Indian: Main Line

61.5%

13 Games·Wins

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

Black

Sicilian: d6 Systems

48.3%

58 Games·Wins

1.e4 c5 2.Nf3 d6

King's Indian: Main Line

50.0%

16 Games·Wins

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

Critical Blunders

Tactical errors analyzed with Stockfish

4 errors

▶

#45Bd3??

Endgame

vs Tissir

OTB·2023

▶

#35Rg6??

Tactics

vs Mamatov

OTB·2023

▶

#27h6??

Tactics

vs Kostin

Rapid·2021

▶

#51Bc8??

Endgame

vs Rakitin

OTB·2021

Endgame Statistics

18 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2025

2024

2023

2022

2021

2020

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

464 Games

52%17%31%

Move	Games	Performance	%
1.e4	250		62%
1.d4	206		58%
1.Nf3	4		50%
1.c4	3		33%
1.d3 Strong	1		100%

1.e4

62%

250

1.d4

58%

206

1.Nf3

50%

4

1.c4

33%

3

1.d3

100%

1

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