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

Loginov, Valery A

RUS RUS·Born 1955·FIDE #4126297·1,516 Games

Classical24681,428 Games

Rapid242151 Games

Blitz237637 Games

Statistics

1516

Total

616

Wins

584

Draws

316

Losses

41%39%21%

Play Style

What you need to know before facing them

Elite accuracy: 91.9% average

Very consistent (92%)

Very precise: only 0.0 blunders/game

Dominates 1.d4 ♔ (80% in 10 games)

Vulnerable to 1.Nf3 ♚ (only 46%)

Deep Analysis

Stockfish 18 · Classical games · 9 analyzed

Accuracy by phase

Opening96.1%

Middlegame91.4%

Endgame93.0%

Clutch Factor

Performance under pressure

-2%

Winning (+2 or more)89%

1 Games

Equal position97%

2 Games

Losing (-2 or more)91%

6 Games

Problematic Pieces

Which pieces cause most errors?

♗

25%

5 errors

♙

25%

5 errors

♖

25%

5 errors

♔

15%

3 errors

♞

10%

2 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?

3

2

2

1

1

2

1

1

1

1

abcdefgh

Many

Few

Critical squares

e83 err

b72 err

g72 err

h62 err

a51 err

e8/b7 concentrate most errors. Force decisions in those zones.

Recent Games

D

Vasiliev, Georgiy2195

European Blitz 2019 · 7 Dec 2019

½-½

L

Ruck, Robert2530

European Blitz 2019 · 7 Dec 2019

1-0

L

Lazavik, Denis2411

European Blitz 2019 · 7 Dec 2019

1-0

D

Decosse, Jean-Fabien2152

European Blitz 2019 · 7 Dec 2019

½-½

L

Chernyak, Viktoria2284

European Blitz 2019 · 7 Dec 2019

0-1

W

Ruck, Robert2530

European Blitz 2019 · 7 Dec 2019

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Ruy Lopez: Morphy

55.6%

9 GamesLow sample·Loses

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Sicilian: d6 Systems

81.8%

11 Games·Wins

1.e4 c5 2.Nf3 d6

Reti: KIA

56.4%

39 Games·Wins

1.Nf3 d5 2.g3 Nf6

Black

Sicilian: Classical

50.0%

24 Games·Wins

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6

Critical Blunders

Tactical errors analyzed with Stockfish

6 errors

▶

#14Bf5??

Tactics

vs Lazavik

Blitz·2019

▶

#59hxg4??

Endgame

vs Belenkaya

Blitz·2019

▶

#27Nec5??

Tactics

vs Rogule

Rapid·2019

▶

#36Ra7??

Tactics

vs Sanz Losada

Rapid·2019

▶

#14Bc5??

Tactics

vs Motylev

Rapid·2019

▶

#38Kg7??

Tactics

vs Carlsen

OTB·2001

Endgame Statistics

16 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2019

2018

2017

2016

2015

2014

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

715 Games

47%39%14%

Move	Games	Performance	%
1.Nf3	639		66%
1.e4	61		62%
1.d4 Strong	10		80%
1.c4	3		67%
1.h4 Strong	1		100%
1.f4 Strong	1		100%

1.Nf3

66%

639

1.e4

62%

61

1.d4

80%

10

1.c4

67%

3

1.h4

100%

1

1.f4

100%

1

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