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

Izoria, Zviad

USA USA·Born 1984·FIDE #13601733·1,277 Games

Classical26021,255 Games

Rapid257922 Games

Blitz26260 Games

Statistics

1277

Total

594

Wins

484

Draws

199

Losses

47%38%16%

Play Style

What you need to know before facing them

Elite accuracy: 93.2% average

Solid conversion: 84%

Very consistent (90%)

Very precise: only 0.0 blunders/game

Dominates 1.d4 ♔ (73% in 238 games)

Deep Analysis

Stockfish 18 · Classical games · 51 analyzed

Accuracy by phase

Opening96.3%

Middlegame93.3%

Endgame94.9%

Clutch Factor

Performance under pressure

+7%

Winning (+2 or more)95%

23 Games

Equal position95%

15 Games

Losing (-2 or more)88%

13 Games

Problematic Pieces

Which pieces cause most errors?

♞

23%

9 errors

♙

21%

8 errors

♖

18%

7 errors

♗

15%

6 errors

♕

13%

5 errors

♔

10%

4 errors

Critical Moment

When does the first serious error occur?

Move 40average

1-15

16-25

26-35

36-45

46+

100% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

2

2

2

2

2

3

2

2

1

2

abcdefgh

Many

Few

Critical squares

h43 err

c32 err

c42 err

d32 err

d42 err

h4/c3 concentrate most errors. Force decisions in those zones.

Recent Games

L

Nozdrachev, Leonid2369

Titled Tue 16th Aug Late · 16 Aug 2022

0-1

W

Semenenko,Dmytry

Titled Tue 9th Aug Late · 9 Aug 2022

0-1

L

Esipenko, Andrey2692

Titled Tue 9th Aug Late · 9 Aug 2022

1-0

W

Pinheiro, Iung Alicio de O.2320

Titled Tue 9th Aug Late · 9 Aug 2022

1-0

D

Claridge-Hansen, William2345

Titled Tue 9th Aug Late · 9 Aug 2022

½-½

D

Dounis, Alexandros2250

Titled Tue 9th Aug Late · 9 Aug 2022

½-½

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

King's Indian

63.9%

36 Games·Wins

1.d4 Nf6 2.c4 g6

Reti vs King's Indian

60.0%

40 Games·Wins

1.Nf3 Nf6 2.c4 g6

Black

Sicilian: d6 Systems

55.8%

52 Games·Wins

1.e4 c5 2.Nf3 d6

King's Indian

45.8%

24 Games·Wins

1.d4 Nf6 2.c4 g6

Critical Blunders

Tactical errors analyzed with Stockfish

9 errors

▶

#37Qd3??

Tactics

vs Nenezic

Blitz·2021

▶

#27h5??

Tactics

vs Nenezic

Blitz·2021

▶

#25Bxc6??

Tactics

vs Jobava

Blitz·2021

▶

#16Qc4+??

Tactics

vs Vakhlamov

Blitz·2021

▶

#44Rc3??

Endgame

vs Hansen

Blitz·2021

▶

#23Qb4??

Tactics

vs Bhat

Rapid·2019

▶

#29Qe3??

Tactics

vs Mont-Reynaud

Rapid·2019

▶

#32Rxc4??

Tactics

vs Tang

OTB·2019

▶

#44Bf3??

Endgame

vs Mamedyarov

OTB·2002

Endgame Statistics

19 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2022

2021

2020

2019

2018

2017

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

637 Games

52%35%13%

Move	Games	Performance	%
1.d4 Strong	238		73%
1.Nf3	237		70%
1.c4	99		63%
1.e4	58		60%
1.g3 Strong	4		100%
1.Nc3 Strong	1		100%

1.d4

73%

238

1.Nf3

70%

237

1.c4

63%

99

1.e4

60%

58

1.g3

100%

4

1.Nc3

100%

1

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