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

Drygalov, Sergey

RUS RUS·Born 1999·FIDE #24171743·2,480 Games

Classical25302,120 Games

Rapid2471149 Games

Blitz2486232 Games

Statistics

2480

Total

1353

Wins

498

Draws

629

Losses

55%20%25%

Play Style

What you need to know before facing them

Elite accuracy: 93.5% average

Solid conversion: 86%

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.d4 ♔ (70% in 1071 games)

Vulnerable to 1.b3 ♚ (only 46%)

Deep Analysis

Stockfish 18 · Classical games · 297 analyzed

Accuracy by phase

Opening96.9%

Middlegame93.3%

Endgame94.7%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)94%

126 Games

Equal position95%

115 Games

Losing (-2 or more)89%

56 Games

Problematic Pieces

Which pieces cause most errors?

♖

25%

68 errors

♕

20%

55 errors

♙

17%

47 errors

♞

16%

45 errors

♗

14%

38 errors

♔

9%

24 errors

Critical Moment

When does the first serious error occur?

Move 41average

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?

8

7

8

8

9

8

7

7

8

7

abcdefgh

Many

Few

Critical squares

e49 err

d58 err

e58 err

f38 err

f88 err

e4/d5 concentrate most errors. Force decisions in those zones.

Recent Games

W

Bryakin, Mikhail2472

2nd 3-0 Thu 28th May 2026 · 28 May 2026

0-1

L

Martirosyan, Haik M.2636

2nd 3-0 Thu 28th May 2026 · 28 May 2026

0-1

W

Beznosov, Timofey2078

2nd 3-0 Thu 28th May 2026 · 28 May 2026

1-0

L

Ibarra Jerez, Jose Carlos2533

2nd 3-0 Thu 28th May 2026 · 28 May 2026

0-1

W

Wartiovaara, Oliver2320

2nd 3-0 Thu 28th May 2026 · 28 May 2026

1-0

W

Bjerre, Jonas Buhl2626

2nd 3-0 Thu 28th May 2026 · 28 May 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Nimzo-Indian: Rubinstein

50.0%

10 Games·Loses

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3

Nimzo-Indian: Capablanca

50.0%

10 Games·Loses

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3

Black

Sicilian: Taimanov

55.6%

9 GamesLow sample·Loses

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6

London System

55.6%

9 GamesLow sample·Loses

1.d4 Nf6 2.Bf4 d5

Strengths

AVOID

White

Queen's Gambit Declined

70.4%

135 Games·Wins

1.d4 d5 2.c4 e6

Grünfeld

66.7%

42 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 d5

Black

Sicilian: d6 Systems

52.8%

324 Games·Wins

1.e4 c5 2.Nf3 d6

Catalan

66.7%

24 Games·Wins

1.d4 Nf6 2.c4 e6 3.g3

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#48e7??

Endgame

vs Makhnev

Blitz·2025

▶

#41d5??

Endgame

vs Meng

Blitz·2025

▶

#87Kxb5??

Endgame

vs Ibarra Jerez

Blitz·2025

▶

#22Bxe3??

Tactics

vs Muradli

Blitz·2025

▶

#52Kg1??

Endgame

vs Begmuratov

Blitz·2025

▶

#85Qd3??

Endgame

vs Anton Guijarro

Blitz·2025

▶

#34Nc3??

Tactics

vs Murzin

Blitz·2025

▶

#37f3??

Tactics

vs Zemlyanskii

Blitz·2025

▶

#30Qxg5??

Tactics

vs Chigaev

Blitz·2025

▶

#54Bb6??

Endgame

vs Kevlishvili

Blitz·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

1254 Games

59%20%21%

Move	Games	Performance	%
1.d4	1071		70%
1.e4	137		63%
1.Nf3	39		64%
1.c4 Strong	3		83%
1.b3	2		50%
1.d3 Weak	1		0%
1.e3 Strong	1		100%

1.d4

70%

1071

1.e4

63%

137

1.Nf3

64%

39

1.c4

83%

3

1.b3

50%

2

1.d3

0%

1

1.e3

100%

1

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