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

Shchekachev, Andrei

FRA FRA·Born 1972·FIDE #4107730·2,448 Games

Classical24722,065 Games

Rapid2484154 Games

Blitz2430234 Games

Statistics

2448

Total

1171

Wins

774

Draws

503

Losses

48%32%21%

Play Style

What you need to know before facing them

Elite accuracy: 92.7% average

Very consistent (88%)

Very precise: only 0.1 blunders/game

Dominates 1.e4 ♔ (70% in 272 games)

Deep Analysis

Stockfish 18 · Classical games · 237 analyzed

Accuracy by phase

Opening95.9%

Middlegame92.6%

Endgame94.1%

Clutch Factor

Performance under pressure

+6%

Winning (+2 or more)93%

97 Games

Equal position95%

92 Games

Losing (-2 or more)88%

48 Games

Problematic Pieces

Which pieces cause most errors?

♙

22%

51 errors

♖

22%

51 errors

♞

17%

39 errors

♕

16%

38 errors

♗

15%

35 errors

♔

9%

22 errors

Critical Moment

When does the first serious error occur?

Move 33average

1-15

16-25

26-35

36-45

46+

59% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

6

7

8

7

10

6

6

7

6

9

abcdefgh

Many

Few

Critical squares

e510 err

f39 err

c58 err

d57 err

g47 err

e5/f3 concentrate most errors. Force decisions in those zones.

Recent Games

L

Fridman, Daniel2560

Luc Winants Mem 2026 · 9 May 2026

0-1

W

Bellahcene, Bilel2493

Luc Winants Mem 2026 · 9 May 2026

1-0

L

Fedorchuk, Sergey A.2585

Luc Winants Mem 2026 · 9 May 2026

0-1

D

Donchenko, Alexander2645

Luc Winants Mem 2026 · 9 May 2026

½-½

D

Bacrot, Etienne2626

Luc Winants Mem 2026 · 9 May 2026

½-½

W

Kunin, Vitaly2505

TCh-BEL 2025-26 · 1 Mar 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

Reti vs King's Indian

67.2%

119 Games·Wins

1.Nf3 Nf6 2.c4 g6

French: Tarrasch

63.6%

11 Games·Wins

1.e4 e6 2.d4 d5 3.Nd2

Black

Sicilian: d6 Systems

50.0%

94 Games·Wins

1.e4 c5 2.Nf3 d6

Catalan

50.0%

10 Games·Wins

1.d4 Nf6 2.c4 e6 3.g3

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#23g3??

Tactics

vs Diermair

OTB·2025

▶

#29Bxb3??

Tactics

vs Kjartansson

OTB·2025

▶

#6Bg2??

Tactics

vs Altini

OTB·2025

▶

#55Rb4??

Endgame

vs Guerlach

OTB·2025

▶

#26Ne1+??

Tactics

vs Gatineau

Rapid·2025

▶

#47g3+??

Endgame

vs Muthaiah AL

Rapid·2025

▶

#28Qd2??

Tactics

vs Materia

OTB·2024

▶

#17Nf3??

Tactics

vs Roux

OTB·2024

▶

#55Rb7??

Endgame

vs Villiers

OTB·2024

▶

#41Nxe4??

Endgame

vs Bergez

OTB·2024

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

1216 Games

54%29%17%

Move	Games	Performance	%
1.Nf3	815		69%
1.e4 Strong	272		70%
1.c4	81		66%
1.d4	30		57%
1.g3	15		70%
1.b4 Strong	1		100%
1.e3 Strong	1		100%
1.b3	1		50%

1.Nf3

69%

815

1.e4

70%

272

1.c4

66%

81

1.d4

57%

30

1.g3

70%

15

1.b4

100%

1

1.e3

100%

1

1.b3

50%

1

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