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

Usmanov, Vasily

RUS RUS·Born 1996·FIDE #4135741·1,184 Games

Classical2450836 Games

Rapid2358183 Games

Blitz2364165 Games

Statistics

1184

Total

437

Wins

372

Draws

375

Losses

37%31%32%

Play Style

What you need to know before facing them

Elite accuracy: 92.5% average

Solid conversion: 82%

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.b3 ♔ (68% in 14 games)

Vulnerable to 1.c4 ♚ (only 42%)

Deep Analysis

Stockfish 18 · Classical games · 102 analyzed

Accuracy by phase

Opening95.3%

Middlegame92.7%

Endgame94.7%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)94%

30 Games

Equal position95%

40 Games

Losing (-2 or more)89%

32 Games

Problematic Pieces

Which pieces cause most errors?

♙

26%

31 errors

♖

20%

24 errors

♕

17%

20 errors

♔

16%

19 errors

♗

11%

13 errors

♞

9%

11 errors

Critical Moment

When does the first serious error occur?

Move 55average

1-15

16-25

26-35

36-45

46+

43% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

3

4

5

4

5

7

6

3

3

4

abcdefgh

Many

Few

Critical squares

e47 err

g46 err

d45 err

f55 err

b44 err

e4/g4 concentrate most errors. Force decisions in those zones.

Recent Games

D

Marin Posada, Sebastian2272

Titled Tue 31st Dec Early · 31 Dec 2024

½-½

L

Palczert, Matyas2381

Titled Tue 31st Dec Early · 31 Dec 2024

1-0

W

Shubin, Daniel2215

Titled Tue 31st Dec Early · 31 Dec 2024

1-0

L

Nguyen, Ngoc Truong Son2646

Titled Tue 31st Dec Early · 31 Dec 2024

0-1

W

Venkatesh, Narayan2214

Titled Tue 31st Dec Early · 31 Dec 2024

0-1

L

Jesse, Ingemars2357

Titled Tue 31st Dec Early · 31 Dec 2024

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

King's Indian: Classical

70.0%

10 Games·Loses

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2

Black

French: Tarrasch

61.5%

13 Games·Loses

1.e4 e6 2.d4 d5 3.Nd2

Catalan

60.0%

10 Games·Loses

1.d4 Nf6 2.c4 e6 3.g3

Strengths

AVOID

White

Nimzo-Indian: Rubinstein

68.4%

19 Games·Wins

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3

Black

No consistent strengths detected as Black

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#60Kd4??

Endgame

vs Kobalia

OTB·2022

▶

#77Kf6??

Endgame

vs Riazantsev

OTB·2022

▶

#42Kh4??

Endgame

vs Sjugirov

Blitz·2021

▶

#35Ra8??

Tactics

vs Triapishko

Rapid·2021

▶

#44Ra3??

Endgame

vs Gabitov

Blitz·2021

▶

#25Kxh6??

Tactics

vs Putrenko

Blitz·2021

▶

#64h3??

Endgame

vs Putrenko

Rapid·2021

▶

#21Qg5??

Tactics

vs Bogumil

Rapid·2021

▶

#32g4??

Tactics

vs Sjugirov

OTB·2021

▶

#34b4??

Tactics

vs Grandelius

Blitz·2020

Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2024

2022

2021

2020

2019

2018

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

590 Games

45%29%26%

Move	Games	Performance	%
1.d4	329		62%
1.Nf3	161		53%
1.c4	54		60%
1.e4	21		43%
1.b3	14		68%
1.g3 Strong	8		94%
1.a3	2		50%
1.c3 Strong	1		100%

1.d4

62%

329

1.Nf3

53%

161

1.c4

60%

54

1.e4

43%

21

1.b3

68%

14

1.g3

94%

8

1.a3

50%

2

1.c3

100%

1

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