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

Lysyj, Igor

FID FID·Born 1987·FIDE #4150120·2,759 Games

Classical25332,178 Games

Rapid2487388 Games

Blitz2468193 Games

Statistics

2759

Total

1207

Wins

1079

Draws

473

Losses

44%39%17%

Play Style

What you need to know before facing them

Elite accuracy: 94.3% average

Solid conversion: 88%

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (71% in 75 games)

Vulnerable to 1.b3 ♚ (only 13%)

Deep Analysis

Stockfish 18 · Classical games · 273 analyzed

Accuracy by phase

Opening97.1%

Middlegame94.1%

Endgame95.1%

Clutch Factor

Performance under pressure

+6%

Winning (+2 or more)94%

88 Games

Equal position96%

142 Games

Losing (-2 or more)89%

43 Games

Problematic Pieces

Which pieces cause most errors?

♕

25%

47 errors

♖

21%

40 errors

♙

18%

35 errors

♞

15%

28 errors

♗

12%

22 errors

♔

10%

19 errors

Critical Moment

When does the first serious error occur?

Move 40average

1-15

16-25

26-35

36-45

46+

33% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

5

8

6

7

6

5

7

6

6

7

abcdefgh

Many

Few

Critical squares

e58 err

c17 err

c37 err

g57 err

d36 err

e5/c1 concentrate most errors. Force decisions in those zones.

Recent Games

W

Vlassov, Nikolai2322

Titled Tue 14th Apr 2026 · 14 Apr 2026

0-1

W

Kurmangaliyeva, Liya2289

Titled Tue 14th Apr 2026 · 14 Apr 2026

0-1

L

So, Wesley2754

Titled Tue 14th Apr 2026 · 14 Apr 2026

1-0

W

Baranciuc, Alexandr2334

Titled Tue 14th Apr 2026 · 14 Apr 2026

0-1

W

Rodriguez Rivero, Jinela de Cari2167

Titled Tue 14th Apr 2026 · 14 Apr 2026

1-0

L

Haug, Havard2422

Titled Tue 14th Apr 2026 · 14 Apr 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

1.b3 Nf6 2.Bb2 e6

70.0%

10 Games·Loses

1.b3 Nf6 2.Bb2 e6

Strengths

AVOID

White

Queen's Gambit Accepted

73.5%

34 Games·Wins

1.d4 d5 2.c4 dxc4

Black

Ruy Lopez: Exchange

80.0%

10 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6

Scotch: Mieses

63.2%

19 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#44Bb7??

Endgame

vs Kezin

OTB·2025

▶

#49b6??

Endgame

vs Kezin

OTB·2025

▶

#53Qa2??

Endgame

vs Afanasiev

Blitz·2025

▶

#26Nb7??

Tactics

vs Shubin

Blitz·2025

▶

#42Bxd5??

Endgame

vs Matinian

Blitz·2025

▶

#47Qd3??

Endgame

vs Tsydypov

Blitz·2025

▶

#40Rxb6??

Tactics

vs Shubin

Blitz·2025

▶

#29Ke7??

Tactics

vs Somkin

Rapid·2025

▶

#47Rg6??

Endgame

vs Belyakov

Rapid·2024

▶

#62Qh5??

Endgame

vs Shuvalova

Rapid·2024

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

1374 Games

51%34%15%

Move	Games	Performance	%
1.d4	1285		68%
1.Nf3 Strong	75		71%
1.e4	9		67%
1.c4 Strong	5		80%

1.d4

68%

1285

1.Nf3

71%

75

1.e4

67%

9

1.c4

80%

5

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