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

Ioannidis, Evgenios

GRE GRE·Born 2001·FIDE #4229274·1,721 Games

Classical24731,513 Games

Rapid244671 Games

Blitz2428160 Games

Statistics

1721

Total

885

Wins

377

Draws

458

Losses

51%22%27%

Play Style

What you need to know before facing them

Elite accuracy: 93.5% average

Solid conversion: 90%

Very consistent (89%)

Very precise: only 0.1 blunders/game

Dominates 1.c4 ♔ (71% in 70 games)

Deep Analysis

Stockfish 18 · Classical games · 191 analyzed

Accuracy by phase

Opening96.4%

Middlegame93.8%

Endgame95.4%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)94%

100 Games

Equal position95%

56 Games

Losing (-2 or more)90%

35 Games

Problematic Pieces

Which pieces cause most errors?

♙

21%

32 errors

♖

21%

32 errors

♕

18%

27 errors

♗

15%

22 errors

♔

13%

20 errors

♞

11%

17 errors

Critical Moment

When does the first serious error occur?

Move 38average

1-15

16-25

26-35

36-45

46+

27% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

7

6

4

6

5

5

8

6

4

6

abcdefgh

Many

Few

Critical squares

f48 err

e77 err

d26 err

d56 err

e66 err

f4/e7 concentrate most errors. Force decisions in those zones.

Recent Games

D

Bondalapati, Sri Vibhav2151

Titled Tue 26th May 2026 · 26 May 2026

½-½

L

Caruana, Fabiano2788

Titled Tue 26th May 2026 · 26 May 2026

1-0

L

Vokhidov, Shamsiddin2637

Titled Tue 26th May 2026 · 26 May 2026

0-1

D

Pranav,V2657

Titled Tue 26th May 2026 · 26 May 2026

½-½

W

Ocampos, Ian2240

Titled Tue 26th May 2026 · 26 May 2026

1-0

W

Sneha Halder2232

Titled Tue 26th May 2026 · 26 May 2026

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Nimzo-Indian: Huebner

62.5%

8 GamesLow sample·Loses

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5

Sicilian: Najdorf

50.0%

8 GamesLow sample·Loses

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

King's Indian: Classical

75.0%

20 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2

Queen's Gambit Declined

67.5%

80 Games·Wins

1.d4 d5 2.c4 e6

Black

Scotch Game

93.3%

15 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.d4

French: Tarrasch

84.6%

13 Games·Wins

1.e4 e6 2.d4 d5 3.Nd2

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#35Qc4??

Tactics

vs Kalogridis

OTB·2025

▶

#19Kg2??

Tactics

vs Krallis

OTB·2025

▶

#35g6??

Tactics

vs Wojtaszek

Blitz·2025

▶

#43Be5??

Endgame

vs Santos Latasa

Blitz·2025

▶

#34a5??

Tactics

vs Pechac

Blitz·2025

▶

#42Rc1??

Endgame

vs Ribeiro

Blitz·2025

▶

#43a5??

Endgame

vs Szakmary

Blitz·2025

▶

#19Bg6??

Tactics

vs Schultz

OTB·2025

▶

#27Ne4??

Tactics

vs Magkalakis

Blitz·2025

▶

#24Rcd1??

Tactics

vs Tzortzatos

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

876 Games

56%21%23%

Move	Games	Performance	%
1.d4	607		66%
1.e4 Strong	142		70%
1.c4	71		70%
1.Nf3	56		62%

1.d4

66%

607

1.e4

70%

142

1.c4

70%

71

1.Nf3

62%

56

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