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

Troff, Kayden

USA USA·Born 1998·FIDE #2047896·1,551 Games

Classical24821,533 Games

Rapid24809 Games

Blitz25769 Games

Statistics

1551

Total

798

Wins

331

Draws

421

Losses

51%21%27%

Play Style

What you need to know before facing them

Elite accuracy: 93.0% average

Solid conversion: 93%

Very consistent (89%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (82% in 14 games)

Deep Analysis

Stockfish 18 · Classical games · 29 analyzed

Accuracy by phase

Opening95.4%

Middlegame92.8%

Endgame95.0%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)94%

17 Games

Equal position93%

5 Games

Losing (-2 or more)90%

7 Games

Problematic Pieces

Which pieces cause most errors?

♕

30%

11 errors

♖

19%

7 errors

♞

16%

6 errors

♙

16%

6 errors

♔

14%

5 errors

♗

5%

2 errors

Critical Moment

When does the first serious error occur?

Move 27average

1-15

16-25

26-35

36-45

46+

33% of blunders occur between move 1-15. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

3

2

4

2

1

1

2

2

2

1

abcdefgh

Many

Few

Critical squares

f64 err

h73 err

a32 err

a62 err

d22 err

f6/h7 concentrate most errors. Force decisions in those zones.

Recent Games

W

Perez Ponsa, Federico2528

2nd 3-0 Thu 13th Nov 2025 · 13 Nov 2025

0-1

L

Theodorou, Nikolas2656

2nd 3-0 Thu 13th Nov 2025 · 13 Nov 2025

0-1

W

Steinberg, Nitzan2556

2nd 3-0 Thu 13th Nov 2025 · 13 Nov 2025

0-1

W

Sklokin, Sergey2379

2nd 3-0 Thu 13th Nov 2025 · 13 Nov 2025

0-1

L

Taher, Yoseph Theolifus2451

2nd 3-0 Thu 13th Nov 2025 · 13 Nov 2025

0-1

W

Svane, Rasmus2609

2nd 3-0 Thu 13th Nov 2025 · 13 Nov 2025

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

No consistent strengths detected as White

Black

London System

80.0%

10 Games·Wins

1.d4 Nf6 2.Bf4 g6

Grünfeld

51.9%

135 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 d5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#31Kh7??

Tactics

vs Bryant

OTB·2024

▶

#53Rg1??

Endgame

vs Theodorou

OTB·2024

▶

#4d3??

Tactics

vs Peatman

OTB·2024

▶

#51Kd3??

Endgame

vs Berkes

Blitz·2022

▶

#37Qd6??

Tactics

vs Berkes

Rapid·2022

▶

#58Qxd5+??

Endgame

vs Ruck

Rapid·2022

▶

#37Rf3??

Tactics

vs Borhy

Rapid·2022

▶

#20Qa6??

Tactics

vs Bjerre

Rapid·2022

▶

#38c4??

Tactics

vs Beliavsky

Rapid·2022

▶

#83Ne5??

Endgame

vs Mamedyarov

OTB·2017

Endgame Statistics

18 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2025

2024

2023

2022

2020

2017

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

774 Games

55%21%24%

Move	Games	Performance	%
1.d4	735		65%
1.e4	15		67%
1.Nf3 Strong	14		82%
1.c4	5		40%
1.b3 Strong	2		100%
1.g3	1		50%
1.a3 Weak	1		0%
1.Na3 Strong	1		100%

1.d4

65%

735

1.e4

67%

15

1.Nf3

82%

14

1.c4

40%

5

1.b3

100%

2

1.g3

50%

1

1.a3

0%

1

1.Na3

100%

1

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