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

Durarbayli, Vasif

AZE AZE·Born 1992·FIDE #13402935·4,401 Games

Classical26114,068 Games

Rapid2560144 Games

Blitz2590215 Games

Statistics

4401

Total

2369

Wins

911

Draws

1115

Losses

54%21%25%

Play Style

What you need to know before facing them

Elite accuracy: 93.5% average

Solid conversion: 81%

Very consistent (89%)

Very precise: only 0.1 blunders/game

Dominates 1.c4 ♔ (79% in 90 games)

Deep Analysis

Stockfish 18 · Classical games · 445 analyzed

Accuracy by phase

Opening96.8%

Middlegame93.3%

Endgame95.2%

Clutch Factor

Performance under pressure

+6%

Winning (+2 or more)95%

188 Games

Equal position95%

160 Games

Losing (-2 or more)89%

97 Games

Problematic Pieces

Which pieces cause most errors?

♕

21%

83 errors

♙

19%

75 errors

♖

19%

75 errors

♗

15%

62 errors

♞

14%

56 errors

♔

13%

51 errors

Critical Moment

When does the first serious error occur?

Move 48average

1-15

16-25

26-35

36-45

46+

52% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

10

14

10

15

9

10

11

10

10

10

abcdefgh

Many

Few

Critical squares

f515 err

f614 err

g411 err

d210 err

d610 err

f5/f6 concentrate most errors. Force decisions in those zones.

Recent Games

W

Rustamov, Rustam2340

Titled Tue 19th May 2026 · 19 May 2026

0-1

W

Gadzhiev, Ruslan2312

Titled Tue 19th May 2026 · 19 May 2026

1-0

W

Kaidanov, Gregory2491

Titled Tue 19th May 2026 · 19 May 2026

0-1

L

Bluebaum, Matthias2694

Titled Tue 19th May 2026 · 19 May 2026

0-1

L

Sevian, Samuel2696

Titled Tue 19th May 2026 · 19 May 2026

0-1

L

Artemiev, Vladislav2641

Titled Tue 19th May 2026 · 19 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

Sicilian: d6 Systems

59.2%

319 Games·Wins

1.e4 c5 2.Nf3 d6

Caro-Kann: Panov-Botvinnik

73.2%

127 Games·Wins

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4

Black

Sicilian: d6 Systems

55.2%

337 Games·Wins

1.e4 c5 2.Nf3 d6

1.b3 d5 2.Bb2 c5

61.5%

13 Games·Wins

1.b3 d5 2.Bb2 c5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#26Kh2??

Tactics

vs Oparin

Blitz·2025

▶

#33Bc7??

Tactics

vs So

Blitz·2025

▶

#62Qb6??

Endgame

vs Ahmadzada

OTB·2025

▶

#43bxa6??

Endgame

vs Ahmadzada

OTB·2025

▶

#71Kg3??

Endgame

vs Naroditsky

Blitz·2024

▶

#59Kf4??

Endgame

vs Escobar Forero

Blitz·2024

▶

#36Bd4??

Tactics

vs Sardana

Blitz·2024

▶

#37d5??

Tactics

vs Caruana

Blitz·2024

▶

#22Nxc6??

Tactics

vs Grebnev

Blitz·2024

▶

#56Qd3??

Endgame

vs Abdusattorov

Blitz·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

2223 Games

59%18%23%

Move	Games	Performance	%
1.e4	2001		67%
1.d4	99		69%
1.c4 Strong	90		79%
1.Nf3	18		58%
1.g3	9		50%
1.b3 Strong	2		75%
1.Nc3 Strong	2		100%
1.c3 Strong	1		100%
1.a3	1		50%

1.e4

67%

2001

1.d4

69%

99

1.c4

79%

90

1.Nf3

58%

18

1.g3

50%

9

1.b3

75%

2

1.Nc3

100%

2

1.c3

100%

1

1.a3

50%

1

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