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

Sjugirov, Sanan

HUN HUN·Born 1993·FIDE #4189302·6,148 Games

Classical25655,122 Games

Rapid2550503 Games

Blitz2578523 Games

Statistics

6148

Total

3177

Wins

1549

Draws

1420

Losses

52%25%23%

Play Style

What you need to know before facing them

Elite accuracy: 93.5% average

Solid conversion: 87%

Very consistent (88%)

Very precise: only 0.1 blunders/game

Dominates 1.c4 ♔ (70% in 167 games)

Deep Analysis

Stockfish 18 · Classical games · 758 analyzed

Accuracy by phase

Opening96.9%

Middlegame93.3%

Endgame94.7%

Clutch Factor

Performance under pressure

+6%

Winning (+2 or more)94%

184 Games

Equal position95%

223 Games

Losing (-2 or more)89%

93 Games

Problematic Pieces

Which pieces cause most errors?

♖

23%

105 errors

♙

18%

83 errors

♔

17%

77 errors

♕

16%

76 errors

♞

14%

66 errors

♗

12%

54 errors

Critical Moment

When does the first serious error occur?

Move 47average

1-15

16-25

26-35

36-45

46+

44% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

13

11

13

13

14

12

17

15

15

16

abcdefgh

Many

Few

Critical squares

e417 err

f316 err

f415 err

g415 err

c414 err

e4/f3 concentrate most errors. Force decisions in those zones.

Recent Games

D

Haug, Havard2422

3rd 3-0 Thu 9th Apr 2026 · 9 Apr 2026

½-½

W

Cao, Qingfeng2373

3rd 3-0 Thu 9th Apr 2026 · 9 Apr 2026

0-1

W

Li, Shilong2369

3rd 3-0 Thu 9th Apr 2026 · 9 Apr 2026

0-1

W

Terry, Renato2508

3rd 3-0 Thu 9th Apr 2026 · 9 Apr 2026

1-0

W

Estrada Nieto, Julian2161

3rd 3-0 Thu 9th Apr 2026 · 9 Apr 2026

0-1

L

Nguyen, Ngoc Truong Son2600

3rd 3-0 Thu 9th Apr 2026 · 9 Apr 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Sicilian: Sveshnikov

50.0%

8 GamesLow sample·Loses

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5

Black

Italian: Two Knights

60.0%

10 Games·Loses

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6

Strengths

AVOID

White

Sicilian: Classical

76.9%

26 Games·Wins

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6

Sicilian: Rossolimo

67.2%

119 Games·Wins

1.e4 c5 2.Nf3 Nc6 3.Bb5

Black

Sicilian: d6 Systems

46.8%

489 Games·Wins

1.e4 c5 2.Nf3 d6

London System

81.8%

11 Games·Wins

1.d4 Nf6 2.Bf4 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#26Rh1??

Tactics

vs Tleukhanov

OTB·2025

▶

#57Kd7??

Endgame

vs Fiorito

OTB·2025

▶

#24Ne4??

Tactics

vs Arslanov

OTB·2025

▶

#33h7??

Tactics

vs Ocampos

OTB·2025

▶

#44f5??

Endgame

vs Pap

OTB·2025

▶

#57Ra8??

Endgame

vs Rustemov

OTB·2025

▶

#44Kc3??

Endgame

vs Ambartsumian

OTB·2025

▶

#48Nbd3??

Endgame

vs Carlsen

OTB·2025

▶

#59Rg7??

Endgame

vs Sarana

OTB·2025

▶

#12Nd2??

Tactics

vs Aradhya

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

3079 Games

56%24%20%

Move	Games	Performance	%
1.e4	1660		68%
1.d4	1007		69%
1.Nf3	238		69%
1.c4	167		70%
1.g3 Strong	4		88%
1.b3	2		50%
1.f4	1		50%

1.e4

68%

1660

1.d4

69%

1007

1.Nf3

69%

238

1.c4

70%

167

1.g3

88%

4

1.b3

50%

2

1.f4

50%

1

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