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

Studer, Noel

SUI SUI·Born 1996·FIDE #1319620·1,216 Games

Classical2582991 Games

Rapid248265 Games

Blitz2452160 Games

Statistics

1216

Total

504

Wins

292

Draws

420

Losses

41%24%35%

Play Style

What you need to know before facing them

Elite accuracy: 93.5% average

Low resilience (31%): Doesn't save lost positions

Solid conversion: 83%

Very consistent (92%)

Very precise: only 0.0 blunders/game

Dominates 1.Nf3 ♔ (67% in 18 games)

Vulnerable to 1.c4 ♚ (only 35%)

Deep Analysis

Stockfish 18 · Classical games · 150 analyzed

Accuracy by phase

Opening96.9%

Middlegame92.4%

Endgame94.6%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)94%

72 Games

Equal position95%

45 Games

Losing (-2 or more)90%

33 Games

Problematic Pieces

Which pieces cause most errors?

♖

27%

35 errors

♕

19%

25 errors

♗

16%

20 errors

♞

15%

19 errors

♙

12%

16 errors

♔

11%

14 errors

Critical Moment

When does the first serious error occur?

Move 41average

1-15

16-25

26-35

36-45

46+

67% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

4

5

4

5

4

4

5

5

5

5

abcdefgh

Many

Few

Critical squares

b45 err

c35 err

d35 err

d55 err

e35 err

b4/c3 concentrate most errors. Force decisions in those zones.

Recent Games

L

Sailer, Mike2108

Titled Tue 25th Mar Early · 25 Mar 2025

1-0

W

Pontiroli, Luca1703

Maia Chess Festival 2024 ... · 28 Aug 2024

1-0

W

Kazarian, Anna-Maja2180

Maia Chess Festival 2024 ... · 28 Aug 2024

1-0

W

Kavutskiy, Kostya2328

Maia Chess Festival 2024 ... · 28 Aug 2024

0-1

D

Saine, Zachary2013

Maia Chess Festival 2024 ... · 28 Aug 2024

½-½

W

Cramling Bellon, Anna2045

Maia Chess Festival 2024 ... · 28 Aug 2024

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Sicilian: Kan

61.5%

13 Games·Loses

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6

Queen's Gambit Accepted

55.6%

18 Games·Loses

1.d4 d5 2.c4 dxc4

Black

Nimzo-Indian: Classical

62.5%

8 GamesLow sample·Loses

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2

French: Steinitz

56.3%

16 Games·Loses

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5

Strengths

AVOID

White

Slav Defense

64.5%

31 Games·Wins

1.d4 d5 2.c4 c6

Black

Sicilian: Rossolimo

57.1%

21 Games·Wins

1.e4 c5 2.Nf3 Nc6 3.Bb5

French: Tarrasch

48.8%

41 Games·Wins

1.e4 e6 2.d4 d5 3.Nd2

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#40f3??

Tactics

vs Saine

Blitz·2024

▶

#47Kh8??

Endgame

vs Gelfand

Blitz·2021

▶

#19Rd8??

Tactics

vs Lagarde

Blitz·2021

▶

#31Rxd2??

Tactics

vs Gelfand

Blitz·2021

▶

#38Rg8??

Tactics

vs Pichot

Blitz·2021

▶

#46Qb1??

Endgame

vs Keymer

Blitz·2021

▶

#46Bc5??

Endgame

vs Keymer

Blitz·2021

▶

#25Nf6??

Tactics

vs Alekseenko

Blitz·2021

▶

#25Rc1??

Tactics

vs Nihal Sarin

Blitz·2021

▶

#37Kh2??

Tactics

vs Pichot

Blitz·2021

Endgame Statistics

22 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2025

2024

2021

2020

2019

2018

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

622 Games

45%23%32%

Move	Games	Performance	%
1.d4	381		55%
1.e4	201		56%
1.Nf3	18		67%
1.c4	14		57%
1.b3 Strong	4		88%
1.g4	3		33%
1.f4 Strong	1		100%

1.d4

55%

381

1.e4

56%

201

1.Nf3

67%

18

1.c4

57%

14

1.b3

88%

4

1.g4

33%

3

1.f4

100%

1

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