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

Meier, Georg

URU URU·Born 1987·FIDE #4675789·2,881 Games

Classical26122,349 Games

Rapid2584191 Games

Blitz2529367 Games

Statistics

2881

Total

1244

Wins

1142

Draws

489

Losses

43%40%17%

Play Style

What you need to know before facing them

Elite accuracy: 93.8% average

Solid conversion: 81%

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (69% in 1005 games)

Deep Analysis

Stockfish 18 · Classical games · 432 analyzed

Accuracy by phase

Opening96.2%

Middlegame93.7%

Endgame95.0%

Clutch Factor

Performance under pressure

+6%

Winning (+2 or more)95%

160 Games

Equal position95%

187 Games

Losing (-2 or more)89%

85 Games

Problematic Pieces

Which pieces cause most errors?

♙

21%

70 errors

♖

21%

68 errors

♕

19%

64 errors

♗

17%

55 errors

♔

12%

40 errors

♞

10%

33 errors

Critical Moment

When does the first serious error occur?

Move 37average

1-15

16-25

26-35

36-45

46+

33% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

10

9

11

9

12

9

12

11

10

9

abcdefgh

Many

Few

Critical squares

d512 err

e412 err

b511 err

f411 err

d810 err

d5/e4 concentrate most errors. Force decisions in those zones.

Recent Games

L

Warmerdam, Max2520

TCh-AUT Rapid 2026 · 17 May 2026

0-1

W

Paszewski, Mateusz2400

TCh-AUT Rapid 2026 · 17 May 2026

0-1

L

Dubnevych, Maksym2350

TCh-AUT Rapid 2026 · 17 May 2026

0-1

W

Averin, Nikolay2416

TCh-AUT Rapid 2026 · 17 May 2026

1-0

W

Bashylina, Luisa2208

TCh-AUT Rapid 2026 · 17 May 2026

0-1

D

Raczek, Krzysztof2487

TCh-AUT Rapid 2026 · 17 May 2026

½-½

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: Double Fianchetto

56.3%

167 Games·Wins

1.Nf3 Nf6 2.g3 g6

Queen's Gambit Declined

60.0%

15 Games·Wins

1.d4 d5 2.c4 e6

Black

Reti: Gambit

60.0%

10 Games·Wins

1.Nf3 d5 2.c4 e6

French: Advance

49.3%

71 Games·Wins

1.e4 e6 2.d4 d5 3.e5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#22Qf6??

Tactics

vs Dubov

OTB·2025

▶

#36Rxd5??

Tactics

vs Gumularz

Blitz·2025

▶

#36Qxc3??

Tactics

vs Bologan

Blitz·2025

▶

#57Ba7??

Endgame

vs Tsolakidou

Rapid·2025

▶

#32Qc7??

Tactics

vs Brodowski

Rapid·2025

▶

#44Re7??

Endgame

vs Pantsulaia

Rapid·2025

▶

#36Bg6??

Tactics

vs Maghsoodloo

Blitz·2025

▶

#38Bxb1??

Tactics

vs Jobava

Blitz·2025

▶

#42Rc8??

Endgame

vs Trost

OTB·2025

▶

#49Be5??

Endgame

vs Wedenberg

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

1433 Games

48%38%14%

Move	Games	Performance	%
1.Nf3	1007		68%
1.e4	198		64%
1.d4	185		67%
1.c4	39		63%
1.g3	4		50%

1.Nf3

68%

1007

1.e4

64%

198

1.d4

67%

185

1.c4

63%

39

1.g3

50%

4

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