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

Perunovic, Milos

SRB SRB·Born 1984·FIDE #921629·2,361 Games

Classical25002,144 Games

Rapid257698 Games

Blitz2495123 Games

Statistics

2361

Total

947

Wins

1023

Draws

388

Losses

40%43%16%

Play Style

What you need to know before facing them

Elite accuracy: 94.5% average

Solid conversion: 88%

Very consistent (91%)

Very precise: only 0.0 blunders/game

Dominates 1.g3 ♚ (70% in 10 games)

Deep Analysis

Stockfish 18 · Classical games · 363 analyzed

Accuracy by phase

Opening96.9%

Middlegame93.8%

Endgame94.7%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)95%

120 Games

Equal position96%

189 Games

Losing (-2 or more)91%

54 Games

Problematic Pieces

Which pieces cause most errors?

♖

26%

43 errors

♗

21%

36 errors

♞

15%

26 errors

♙

15%

26 errors

♕

15%

25 errors

♔

7%

12 errors

Critical Moment

When does the first serious error occur?

Move 29average

1-15

16-25

26-35

36-45

46+

43% of blunders occur between move 16-25. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

6

10

7

6

5

10

8

5

5

5

abcdefgh

Many

Few

Critical squares

e410 err

f610 err

f48 err

d57 err

d86 err

e4/f6 concentrate most errors. Force decisions in those zones.

Recent Games

W

Seemann, Jakub2548

TCh-AUT Rapid 2026 · 17 May 2026

1-0

D

Pranav,V2657

TCh-AUT Rapid 2026 · 17 May 2026

½-½

D

Maghsoodloo, Parham2710

TCh-AUT Rapid 2026 · 17 May 2026

½-½

W

Iturrizaga Bonelli, Eduardo2589

TCh-AUT Rapid 2026 · 17 May 2026

1-0

D

Roshka, Yevgeniy2512

TCh-AUT Rapid 2026 · 17 May 2026

½-½

W

Risteski, Emil2408

TCh-AUT Rapid 2026 · 17 May 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

Sicilian: Open

52.9%

17 Games·Loses

1.e4 c5 2.Nf3 d6 3.d4

Strengths

AVOID

White

Sicilian: e6 Systems

57.3%

96 Games·Wins

1.e4 c5 2.Nf3 e6

French: Steinitz

62.5%

32 Games·Wins

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5

Black

Sicilian: Taimanov

50.0%

78 Games·Wins

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6

Queen's Gambit Declined

47.1%

17 Games·Wins

1.d4 d5 2.c4 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#24Bf6??

Tactics

vs Schreiner

OTB·2025

▶

#22Nf8??

Tactics

vs Gozzoli

OTB·2025

▶

#24Rfd8??

Tactics

vs Slobodjan

OTB·2025

▶

#23Qf8??

Tactics

vs Balog

OTB·2023

▶

#37Nf4??

Tactics

vs Sanal

OTB·2023

▶

#37e3??

Tactics

vs Warmerdam

OTB·2022

▶

#18Qh5??

Tactics

vs Roebers

OTB·2022

▶

#33Qxc5??

Tactics

vs Stankovic

Blitz·2022

▶

#55Kf4??

Endgame

vs Zlatanovic

Blitz·2022

▶

#23Rxe6??

Tactics

vs Martic

Blitz·2022

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

1197 Games

47%40%13%

Move	Games	Performance	%
1.e4	1192		67%
1.d4	3		67%
1.Nf3 Strong	2		75%

1.e4

67%

1192

1.d4

67%

3

1.Nf3

75%

2

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