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

Grigorov, Grigor

BUL BUL·Born 1987·FIDE #2907313·986 Games

Classical2496966 Games

Rapid252610 Games

Blitz250620 Games

Statistics

986

Total

471

Wins

312

Draws

203

Losses

48%32%21%

Play Style

What you need to know before facing them

Elite accuracy: 95.2% average

High resilience (56%): Dangerous even when losing

Solid conversion: 86%

Very consistent (94%)

Very precise: only 0.0 blunders/game

Dominates 1.Nf3 ♔ (69% in 54 games)

Deep Analysis

Stockfish 18 · Classical games · 57 analyzed

Accuracy by phase

Opening96.4%

Middlegame94.7%

Endgame95.3%

Clutch Factor

Performance under pressure

+3%

Winning (+2 or more)95%

20 Games

Equal position96%

31 Games

Losing (-2 or more)92%

6 Games

Problematic Pieces

Which pieces cause most errors?

♙

24%

5 errors

♗

19%

4 errors

♞

19%

4 errors

♕

19%

4 errors

♖

14%

3 errors

♔

5%

1 errors

Critical Moment

When does the first serious error occur?

Move 25average

1-15

16-25

26-35

36-45

46+

100% of blunders occur between move 16-25. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

1

1

1

1

2

3

1

1

1

1

abcdefgh

Many

Few

Critical squares

f53 err

e52 err

a61 err

b41 err

b71 err

f5/e5 concentrate most errors. Force decisions in those zones.

Recent Games

W

Seretis, Nikolaos G

Blitz Ministry of Macedon... · 13 Sept 2025

0-1

W

Veljanoski, Andrej2227

Blitz Ministry of Macedon... · 13 Sept 2025

0-1

D

Stankovic, Milos

Blitz Ministry of Macedon... · 13 Sept 2025

½-½

W

Tsouchnikas, Orestis1794

Blitz Ministry of Macedon... · 13 Sept 2025

1-0

W

Ketzetzis, Georgios

Blitz Ministry of Macedon... · 13 Sept 2025

0-1

W

Merkouropoulos, Dionysios2136

Blitz Ministry of Macedon... · 13 Sept 2025

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

Nimzo-Indian: Classical

54.5%

11 Games·Loses

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2

Caro-Kann: Exchange

52.9%

17 Games·Loses

1.e4 c6 2.d4 d5 3.exd5

Strengths

AVOID

White

Queen's Gambit Declined

77.8%

18 Games·Wins

1.d4 d5 2.c4 e6

Slav Defense

66.7%

15 Games·Wins

1.d4 d5 2.c4 c6

Black

French Defense

80.0%

10 Games·Wins

1.e4 e6 2.d4 d5

Catalan

60.0%

15 Games·Wins

1.d4 Nf6 2.c4 e6 3.g3

Critical Blunders

Tactical errors analyzed with Stockfish

8 errors

▶

#47Nf5??

Endgame

vs Alexakis

Blitz·2025

▶

#36Qb6??

Tactics

vs Draskovic

OTB·2025

▶

#42Bb3+??

Endgame

vs Subelj

Blitz·2024

▶

#18Ndb1??

Tactics

vs Papadimitriou

Blitz·2024

▶

#30Rab1??

Tactics

vs Veleshnja

OTB·2024

▶

#42Qh3??

Endgame

vs Lohr

OTB·2021

▶

#59Bd2??

Endgame

vs Brynell

OTB·2020

▶

#25Bb7??

Tactics

vs Diaz Camallonga

OTB·2020

Endgame Statistics

17 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2025

2024

2023

2022

2021

2020

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

484 Games

52%31%17%

Move	Games	Performance	%
1.d4	425		67%
1.Nf3	54		69%
1.e4 Strong	4		75%
1.c4	1		50%

1.d4

67%

425

1.Nf3

69%

54

1.e4

75%

4

1.c4

50%

1

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