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

Kaidanov, Gregory

USA USA·Born 1959·FIDE #2008564·2,131 Games

Classical24922,092 Games

Rapid—28 Games

Blitz254711 Games

Statistics

2131

Total

958

Wins

721

Draws

452

Losses

45%34%21%

Play Style

What you need to know before facing them

Elite accuracy: 93.7% average

Solid conversion: 91%

Very consistent (84%)

Very precise: only 0.1 blunders/game

Dominates 1.c4 ♔ (75% in 79 games)

Deep Analysis

Stockfish 18 · Classical games · 223 analyzed

Accuracy by phase

Opening96.9%

Middlegame93.9%

Endgame96.2%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)95%

85 Games

Equal position94%

90 Games

Losing (-2 or more)90%

48 Games

Problematic Pieces

Which pieces cause most errors?

♞

23%

35 errors

♖

19%

29 errors

♗

18%

27 errors

♙

18%

27 errors

♕

16%

24 errors

♔

5%

8 errors

Critical Moment

When does the first serious error occur?

Move 37average

1-15

16-25

26-35

36-45

46+

45% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

5

5

5

5

6

7

8

6

6

5

abcdefgh

Many

Few

Critical squares

e58 err

d57 err

c46 err

c56 err

e46 err

e5/d5 concentrate most errors. Force decisions in those zones.

Recent Games

L

Sahib Singh2355

Titled Tue 26th May 2026 · 26 May 2026

0-1

L

Idani, Pouya2594

Titled Tue 26th May 2026 · 26 May 2026

1-0

D

Reprintsev, Alexander2288

Titled Tue 26th May 2026 · 26 May 2026

½-½

L

Mathurin, Nathaniel2055

Titled Tue 26th May 2026 · 26 May 2026

0-1

W

Platonovs, Nikolajs2240

Titled Tue 26th May 2026 · 26 May 2026

1-0

W

Arkadan, Adib2215

Titled Tue 26th May 2026 · 26 May 2026

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

English: Symmetrical

91.7%

12 Games·Wins

1.c4 c5 2.Nf3 Nc6

King's Indian: Classical

60.0%

45 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2

Black

Sicilian: d6 Systems

50.0%

14 Games·Wins

1.e4 c5 2.Nf3 d6

Ruy Lopez: Closed

48.0%

25 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

10 errors

▶

#54Rc2??

Endgame

vs Christiansen

OTB·2025

▶

#23gxh3??

Tactics

vs Taylor

OTB·2025

▶

#34Qd2??

Tactics

vs Shabalov

OTB·2025

▶

#36Qc8??

Tactics

vs Bajarani

OTB·2024

▶

#38Nc6??

Tactics

vs Paschall

OTB·2024

▶

#55g4??

Endgame

vs Samadov

OTB·2024

▶

#39Nc2??

Tactics

vs Kraai

OTB·2024

▶

#29Nd2??

Tactics

vs Noboa Silva

OTB·2024

▶

#24Nxc6??

Tactics

vs Karthik

OTB·2023

▶

#32Bg6??

Tactics

vs Root

OTB·2023

Endgame Statistics

22 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

1086 Games

52%30%18%

Move	Games	Performance	%
1.d4	564		68%
1.e4	229		68%
1.Nf3	213		64%
1.c4 Strong	79		75%
1.g3 Strong	1		100%

1.d4

68%

564

1.e4

68%

229

1.Nf3

64%

213

1.c4

75%

79

1.g3

100%

1

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