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

Movsesian, Sergei

ARM ARM·Born 1978·FIDE #310204·3,909 Games

Classical25942,986 Games

Rapid2608432 Games

Blitz2589491 Games

Statistics

3909

Total

1732

Wins

1568

Draws

606

Losses

44%40%16%

Play Style

What you need to know before facing them

Elite accuracy: 94.0% average

High resilience (62%): Dangerous even when losing

Solid conversion: 88%

Very consistent (89%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (74% in 172 games)

Deep Analysis

Stockfish 18 · Classical games · 506 analyzed

Accuracy by phase

Opening96.4%

Middlegame93.5%

Endgame94.5%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)95%

194 Games

Equal position95%

225 Games

Losing (-2 or more)90%

81 Games

Problematic Pieces

Which pieces cause most errors?

♖

21%

76 errors

♙

20%

72 errors

♕

20%

72 errors

♞

18%

67 errors

♗

15%

55 errors

♔

7%

24 errors

Critical Moment

When does the first serious error occur?

Move 46average

1-15

16-25

26-35

36-45

46+

37% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

10

13

12

13

14

11

10

13

10

11

abcdefgh

Many

Few

Critical squares

e414 err

e313 err

e513 err

g513 err

f512 err

e4/e3 concentrate most errors. Force decisions in those zones.

Recent Games

W

Leitgeb, Julian2298

TCh-AUT Rapid 2026 · 17 May 2026

0-1

W

Piskov, Yury2387

TCh-AUT Rapid 2026 · 17 May 2026

0-1

L

Raczek, Krzysztof2487

TCh-AUT Rapid 2026 · 17 May 2026

1-0

L

Averin, Nikolay2416

TCh-AUT Rapid 2026 · 17 May 2026

0-1

L

Tregubov, Pavel V.2543

TCh-AUT Rapid 2026 · 17 May 2026

1-0

W

Kovalskyi, Roman2213

TCh-AUT Rapid 2026 · 17 May 2026

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

French: Advance

65.3%

101 Games·Wins

1.e4 e6 2.d4 d5 3.e5

Sicilian: e6 Systems

61.3%

119 Games·Wins

1.e4 c5 2.Nf3 e6

Black

English: Reversed Sicilian

64.3%

28 Games·Wins

1.c4 e5 2.Nc3 Nc6

Sicilian: Alapin

60.0%

15 Games·Wins

1.e4 c5 2.c3 Qa5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#33Qb3??

Tactics

vs Stinka

OTB·2026

▶

#55fxe5??

Endgame

vs Cifka

OTB·2025

▶

#40Rd2??

Tactics

vs Sabol

OTB·2025

▶

#15Qh5??

Tactics

vs Jirka

Rapid·2025

▶

#31Bd7??

Tactics

vs Rubes

Rapid·2025

▶

#61Ra2??

Endgame

vs Sindler

Rapid·2025

▶

#48Bb5??

Endgame

vs Horak

Rapid·2025

▶

#46Qf5??

Endgame

vs Zwardon

Rapid·2025

▶

#28Qg6??

Tactics

vs Sikorova

Rapid·2025

▶

#28Kh8??

Tactics

vs Amin

OTB·2025

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

2001 Games

51%36%13%

Move	Games	Performance	%
1.e4	1608		69%
1.Nf3 Strong	172		74%
1.c4	113		63%
1.d4 Strong	57		74%
1.g3 Strong	49		70%
1.b3 Strong	2		100%

1.e4

69%

1608

1.Nf3

74%

172

1.c4

63%

113

1.d4

74%

57

1.g3

70%

49

1.b3

100%

2

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