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

Eljanov, Pavel

UKR UKR·Born 1983·FIDE #14102951·4,290 Games

Classical26643,765 Games

Rapid2605213 Games

Blitz2622331 Games

Statistics

4290

Total

1946

Wins

1370

Draws

973

Losses

45%32%23%

Play Style

What you need to know before facing them

Elite accuracy: 93.5% average

Solid conversion: 84%

Very consistent (88%)

Very precise: only 0.1 blunders/game

Dominates 1.d4 ♔ (66% in 1323 games)

Deep Analysis

Stockfish 18 · Classical games · 703 analyzed

Accuracy by phase

Opening96.8%

Middlegame93.7%

Endgame94.8%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)95%

185 Games

Equal position95%

222 Games

Losing (-2 or more)90%

93 Games

Problematic Pieces

Which pieces cause most errors?

♖

25%

89 errors

♕

20%

71 errors

♙

16%

57 errors

♔

15%

55 errors

♗

12%

44 errors

♞

11%

40 errors

Critical Moment

When does the first serious error occur?

Move 44average

1-15

16-25

26-35

36-45

46+

50% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

15

13

9

11

10

13

9

8

13

11

abcdefgh

Many

Few

Critical squares

d715 err

b613 err

d513 err

e413 err

c211 err

d7/b6 concentrate most errors. Force decisions in those zones.

Recent Games

L

Mekhitarian, Krikor Sevag2544

2nd 3-0 Thu 14th May 2026 · 14 May 2026

1-0

W

Obrusnik, Michal2246

2nd 3-0 Thu 14th May 2026 · 14 May 2026

1-0

W

Seder, Mohammed2146

2nd 3-0 Thu 14th May 2026 · 14 May 2026

1-0

W

Bogaudinov, Rushan1912

2nd 3-0 Thu 14th May 2026 · 14 May 2026

0-1

D

Terry, Renato2508

2nd 3-0 Thu 14th May 2026 · 14 May 2026

½-½

L

Bluebaum, Matthias2694

2nd 3-0 Thu 14th May 2026 · 14 May 2026

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

French: Advance

79.2%

24 Games·Wins

1.e4 e6 2.d4 d5 3.e5

London System

72.2%

18 Games·Wins

1.d4 Nf6 2.Bf4 d5

Black

Ruy Lopez: Open

57.1%

14 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4

Queen's Gambit Declined

47.0%

83 Games·Wins

1.d4 d5 2.c4 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#48Nxf3??

Endgame

vs Adams

Rapid·2025

▶

#65Kd7??

Endgame

vs Alonso Rosell

OTB·2025

▶

#44Rxg3??

Endgame

vs Tiglon

OTB·2025

▶

#34Qf6??

Tactics

vs Tin

OTB·2025

▶

#52exf5??

Endgame

vs Tin

OTB·2025

▶

#41Ne6??

Endgame

vs Martirosyan

OTB·2025

▶

#49Kc3??

Endgame

vs Nomin-Erdene

OTB·2025

▶

#50Ke6??

Endgame

vs Anton Guijarro

Rapid·2025

▶

#72Kf6??

Endgame

vs Vitiugov

Rapid·2025

▶

#33Rg2??

Tactics

vs Steinberg

Rapid·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

2172 Games

51%30%19%

Move	Games	Performance	%
1.d4	1323		66%
1.e4	348		65%
1.Nf3	298		63%
1.c4	190		63%
1.f4	9		44%
1.g3 Strong	3		100%
1.a4 Strong	1		100%

1.d4

66%

1323

1.e4

65%

348

1.Nf3

63%

298

1.c4

63%

190

1.f4

44%

9

1.g3

100%

3

1.a4

100%

1

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