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

Rabiega, Robert

GER GER·Born 1971·FIDE #4601475·1,402 Games

Classical24601,356 Games

Rapid243913 Games

Blitz248533 Games

Statistics

1402

Total

584

Wins

529

Draws

289

Losses

42%38%21%

Play Style

What you need to know before facing them

Elite accuracy: 93.2% average

Low resilience (24%): Doesn't save lost positions

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.e4 ♔ (65% in 654 games)

Vulnerable to 1.c4 ♚ (only 43%)

Deep Analysis

Stockfish 18 · Classical games · 49 analyzed

Accuracy by phase

Opening96.4%

Middlegame93.6%

Endgame95.6%

Clutch Factor

Performance under pressure

0%

Winning (+2 or more)91%

9 Games

Equal position96%

22 Games

Losing (-2 or more)91%

18 Games

Problematic Pieces

Which pieces cause most errors?

♕

39%

13 errors

♖

24%

8 errors

♞

15%

5 errors

♗

12%

4 errors

♔

6%

2 errors

♙

3%

1 errors

Critical Moment

When does the first serious error occur?

Move 28average

1-15

16-25

26-35

36-45

46+

67% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

1

1

1

2

2

2

2

1

3

2

abcdefgh

Many

Few

Critical squares

f33 err

d22 err

d62 err

e52 err

f52 err

f3/d2 concentrate most errors. Force decisions in those zones.

Recent Games

L

Solovjov, Alexandr2237

Titled Tue 23rd Apr Early · 23 Apr 2024

1-0

L

Tari, Aryan2634

Titled Tue 23rd Apr Early · 23 Apr 2024

1-0

W

Ljukin, Sergei2362

Titled Tue 23rd Apr Early · 23 Apr 2024

0-1

L

Fichter, Fabian2303

Titled Tue 23rd Apr Early · 23 Apr 2024

0-1

L

Alcazar Jimenez, Jesus Alberto2147

Titled Tue 23rd Apr Early · 23 Apr 2024

1-0

W

Korol, Dimitry2287

Titled Tue 23rd Apr Early · 23 Apr 2024

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Sicilian: e6 Systems

61.9%

21 Games·Wins

1.e4 c5 2.Nf3 e6

French: Winawer

60.7%

28 Games·Wins

1.e4 e6 2.d4 d5 3.Nc3 Bb4

Black

Ruy Lopez: Morphy

48.4%

31 Games·Wins

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

Ruy Lopez: Closed

46.7%

15 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7

Critical Blunders

Tactical errors analyzed with Stockfish

9 errors

▶

#32Rg6??

Tactics

vs Rendle

Rapid·2023

▶

#24Kd2??

Tactics

vs Socko

OTB·2023

▶

#30Qe5??

Tactics

vs Sawlin

OTB·2020

▶

#54Ka6??

Endgame

vs Biastoch

OTB·2019

▶

#32Qd6??

Tactics

vs Feuerstack

OTB·2019

▶

#23Qg5??

Tactics

vs Kololli

OTB·2019

▶

#22Rb8??

Tactics

vs Topalov

OTB·2000

▶

#36Qxf4??

Tactics

vs Ivanchuk

OTB·2000

▶

#34Rd8??

Tactics

vs Korchnoi

OTB

Endgame Statistics

14 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2024

2023

2022

2020

2019

2018

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

701 Games

46%36%18%

Move	Games	Performance	%
1.e4	654		65%
1.d4	34		52%
1.Nf3	12		46%
1.c4 Strong	1		100%

1.e4

65%

654

1.d4

52%

34

1.Nf3

46%

12

1.c4

100%

1

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