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

Sokolovsky, Yahli

ISR ISR·Born 2006·FIDE #2820242·2,214 Games

Classical25672,179 Games

Rapid242216 Games

Blitz242419 Games

Statistics

2214

Total

1067

Wins

365

Draws

778

Losses

48%16%35%

Play Style

What you need to know before facing them

Elite accuracy: 93.1% average

Solid conversion: 83%

Very consistent (88%)

Very precise: only 0.1 blunders/game

Dominates 1.g3 ♔ (64% in 14 games)

Deep Analysis

Stockfish 18 · Classical games · 634 analyzed

Accuracy by phase

Opening96.9%

Middlegame93.5%

Endgame95.4%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)94%

217 Games

Equal position95%

151 Games

Losing (-2 or more)89%

132 Games

Problematic Pieces

Which pieces cause most errors?

♖

27%

125 errors

♙

16%

77 errors

♕

16%

77 errors

♗

15%

71 errors

♞

15%

70 errors

♔

10%

49 errors

Critical Moment

When does the first serious error occur?

Move 39average

1-15

16-25

26-35

36-45

46+

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

Error Heatmap

Where do most errors occur?

14

12

12

12

16

14

13

13

17

12

abcdefgh

Many

Few

Critical squares

e417 err

e516 err

d614 err

f514 err

d413 err

e4/e5 concentrate most errors. Force decisions in those zones.

Recent Games

W

Movahed, Sina2575

2nd 3-0 Thu 21st May 2026 · 21 May 2026

1-0

W

Obrusnik, Michal2246

2nd 3-0 Thu 21st May 2026 · 21 May 2026

0-1

W

Di Berardino, Diego Rafael2465

2nd 3-0 Thu 21st May 2026 · 21 May 2026

1-0

W

Lebedev, Artem S.2367

2nd 3-0 Thu 21st May 2026 · 21 May 2026

1-0

L

Ghoreishi Amiri, Seyed Kian2299

2nd 3-0 Thu 21st May 2026 · 21 May 2026

1-0

W

Hakobyan, Menua2269

2nd 3-0 Thu 21st May 2026 · 21 May 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

1.b3 d5 2.Bb2 Nf6

64.3%

28 Games·Loses

1.b3 d5 2.Bb2 Nf6

1.b3 d5 2.Bb2 Bf5

59.3%

27 Games·Loses

1.b3 d5 2.Bb2 Bf5

Black

English: Anglo-Indian

70.0%

10 Games·Loses

1.c4 Nf6 2.Nc3 g6

Sicilian: Closed

62.5%

8 GamesLow sample·Loses

1.e4 c5 2.Nc3 d6

Strengths

AVOID

White

1.b3 e5 2.Bb2 Nc6

60.2%

166 Games·Wins

1.b3 e5 2.Bb2 Nc6

Ruy Lopez: Closed

69.7%

33 Games·Wins

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

Black

Scotch: Classical

50.0%

16 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#20Rd4??

Tactics

vs Finkel

OTB·2026

▶

#37Nf6+??

Tactics

vs Erigaisi Arjun

OTB·2025

▶

#35Rc5??

Tactics

vs Fedoseev

OTB·2025

▶

#19Ng5??

Tactics

vs Alekseev

OTB·2025

▶

#92exf5??

Endgame

vs Domalchuk-Jonasson

OTB·2025

▶

#25Qb7??

Tactics

vs Mohamed Anees M

OTB·2025

▶

#85Kf5??

Endgame

vs Bottazzi

OTB·2025

▶

#19Qh7??

Tactics

vs Roberson

OTB·2025

▶

#20Bxe5??

Tactics

vs George Samir

OTB·2025

▶

#58Rxa5??

Endgame

vs Le Tuan

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

1131 Games

51%16%33%

Move	Games	Performance	%
1.b3	615		58%
1.e4	496		60%
1.g3	14		64%
1.d4	5		40%
1.h4 Strong	1		100%

1.b3

58%

615

1.e4

60%

496

1.g3

64%

14

1.d4

40%

5

1.h4

100%

1

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