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

IM

Magold, Filip

ROU ROU·Born 2008·FIDE #1254456·704 Games

Classical2501579 Games

Rapid244485 Games

Blitz235461 Games

Statistics

704

Total

349

Wins

204

Draws

151

Losses

50%29%21%

Play Style

What you need to know before facing them

Elite accuracy: 92.5% average

High resilience (57%): Dangerous even when losing

Solid conversion: 87%

Very consistent (87%)

Very precise: only 0.1 blunders/game

Dominates 1.c4 ♔ (77% in 78 games)

Vulnerable to 1.c4 ♚ (only 45%)

Deep Analysis

Stockfish 18 · Classical games · 354 analyzed

Accuracy by phase

Opening96.3%

Middlegame92.8%

Endgame94.9%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)94%

165 Games

Equal position94%

107 Games

Losing (-2 or more)88%

82 Games

Problematic Pieces

Which pieces cause most errors?

♖

22%

82 errors

♙

19%

69 errors

♕

18%

65 errors

♗

17%

61 errors

♞

15%

55 errors

♔

9%

34 errors

Critical Moment

When does the first serious error occur?

Move 42average

1-15

16-25

26-35

36-45

46+

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

Error Heatmap

Where do most errors occur?

9

11

14

9

11

12

14

15

9

9

abcdefgh

Many

Few

Critical squares

d415 err

e714 err

f514 err

d512 err

c511 err

d4/e7 concentrate most errors. Force decisions in those zones.

Recent Games

W

Prelipcean, Eric-Matei2241

Grand Prix Bucharest 2026 · 10 May 2026

1-0

W

Daianu, Cristian-Clement2202

Grand Prix Bucharest 2026 · 10 May 2026

0-1

L

Georgiev, Kiril2525

Grand Prix Bucharest 2026 · 10 May 2026

0-1

W

Sofronie, Iulian2350

Grand Prix Bucharest 2026 · 10 May 2026

1-0

W

Kapechun, Mikhailo2164

Grand Prix Bucharest 2026 · 10 May 2026

0-1

L

Suleymanli, Aydin2665

Grand Prix Bucharest 2026 · 10 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

55.9%

34 Games·Wins

1.e4 c5 2.Nf3 d6

Sicilian: e6 Systems

55.0%

20 Games·Wins

1.e4 c5 2.Nf3 e6

Black

Sicilian: e6 Systems

54.5%

11 Games·Wins

1.e4 c5 2.Nf3 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#93Be4??

Endgame

vs Simunkovic

Blitz·2025

▶

#48Ra7??

Endgame

vs Willems

OTB·2025

▶

#26Qe7??

Tactics

vs Georgiev

Rapid·2025

▶

#34Bxf5??

Tactics

vs Filip

Rapid·2025

▶

#43Rb7??

Endgame

vs Karthik Venkataraman

OTB·2025

▶

#27Rxh2??

Tactics

vs Rohit S

OTB·2025

▶

#34Qd7+??

Tactics

vs Santos Latasa

OTB·2025

▶

#42Qb8??

Endgame

vs Vedmediuc

OTB·2025

▶

#71e5??

Endgame

vs Codreanu

OTB·2025

▶

#31Ng2??

Tactics

vs Cnejev

OTB·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

363 Games

56%25%19%

Move	Games	Performance	%
1.e4	196		64%
1.c4 Strong	78		77%
1.d4 Strong	53		75%
1.Nf3	29		66%
1.a3 Strong	7		71%

1.e4

64%

196

1.c4

77%

78

1.d4

75%

53

1.Nf3

66%

29

1.a3

71%

7

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