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

Galchenko, Matvey

FID FID·Born 2000·FIDE #24175480·3,187 Games

Classical24353,084 Games

Rapid242549 Games

Blitz241554 Games

Statistics

3187

Total

1941

Wins

327

Draws

919

Losses

61%10%29%

Play Style

What you need to know before facing them

Elite accuracy: 91.2% average

Very consistent (87%)

Very precise: only 0.2 blunders/game

Dominates 1.f4 ♔ (78% in 783 games)

Deep Analysis

Stockfish 18 · Classical games · 178 analyzed

Accuracy by phase

Opening95.2%

Middlegame91.6%

Endgame93.6%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)92%

93 Games

Equal position94%

43 Games

Losing (-2 or more)88%

43 Games

Problematic Pieces

Which pieces cause most errors?

♖

25%

77 errors

♞

19%

59 errors

♙

19%

58 errors

♗

14%

44 errors

♕

13%

41 errors

♔

10%

32 errors

Critical Moment

When does the first serious error occur?

Move 47average

1-15

16-25

26-35

36-45

46+

43% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

8

11

11

10

10

10

10

10

9

7

abcdefgh

Many

Few

Critical squares

e611 err

e711 err

c410 err

d410 err

e410 err

e6/e7 concentrate most errors. Force decisions in those zones.

Recent Games

W

Kocharin, Timur2333

1st 3-0 Thu 28th May 2026 · 28 May 2026

1-0

W

Petcu, Gabriel2323

1st 3-0 Thu 28th May 2026 · 28 May 2026

0-1

W

Ermolaev,An2274

1st 3-0 Thu 28th May 2026 · 28 May 2026

1-0

L

Djokic, Mihailo2258

1st 3-0 Thu 28th May 2026 · 28 May 2026

1-0

L

Duda, Jan-Krzysztof2739

1st 3-0 Thu 28th May 2026 · 28 May 2026

0-1

L

Agmanov, Begman2206

1st 3-0 Thu 28th May 2026 · 28 May 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Scotch: Mieses

54.5%

11 Games·Loses

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

1.f4 d6 2.Nf3 g6

44.4%

9 GamesLow sample·Loses

1.f4 d6 2.Nf3 g6

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

1.f4 d5 2.Nf3 e6

90.0%

10 Games·Wins

1.f4 d5 2.Nf3 e6

1.f4 g6 2.Nf3 Bg7

84.1%

69 Games·Wins

1.f4 g6 2.Nf3 Bg7

Black

French: Tarrasch

69.1%

123 Games·Wins

1.e4 e6 2.d4 d5 3.Nd2

French: Exchange

61.0%

77 Games·Wins

1.e4 e6 2.d4 d5 3.exd5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#28Nd2??

Tactics

vs Zhauynbay Aldiyar

OTB·2026

▶

#36Rd2??

Tactics

vs Nakamura

OTB·2026

▶

#65c5??

Endgame

vs Taher

OTB·2026

▶

#42Ne4??

Endgame

vs Baturin-Vinogradov

OTB·2026

▶

#73Nf2??

Endgame

vs Mekhitarian

OTB·2026

▶

#87Kd7??

Endgame

vs Germanovs

OTB·2026

▶

#83Qf6??

Endgame

vs Wang

OTB·2026

▶

#73Kg5??

Endgame

vs Khodko

OTB·2026

▶

#18bxa4??

Tactics

vs Szpar

OTB·2026

▶

#62Rd8??

Endgame

vs Sarana

OTB·2026

Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2026

2025

2024

2023

2022

2021

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

1616 Games

63%11%26%

Move	Games	Performance	%
1.f4 Strong	783		78%
1.e4	604		59%
1.Nf3	70		67%
1.c4	57		51%
1.b3	49		63%
1.d4	39		63%
1.a3 Strong	8		81%
1.g3	3		67%
1.h4 Weak	2		25%
1.g4 Weak	1		0%

1.f4

78%

783

1.e4

59%

604

1.Nf3

67%

70

1.c4

51%

57

1.b3

63%

49

1.d4

63%

39

1.a3

81%

8

1.g3

67%

3

1.h4

25%

2

1.g4

0%

1

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