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

Banh Gia Huy

VIE VIE·Born 2009·FIDE #12424714·525 Games

Classical2451425 Games

Rapid226570 Games

Blitz224456 Games

Statistics

525

Total

229

Wins

166

Draws

127

Losses

44%32%24%

Play Style

What you need to know before facing them

Elite accuracy: 92.8% average

Plays 2.1% better with black

Very precise: only 0.1 blunders/game

Dominates 1.c4 ♔ (72% in 72 games)

Vulnerable to 1.Nf3 ♚ (only 33%)

Deep Analysis

Stockfish 18 · Classical games · 186 analyzed

Accuracy by phase

Opening96.3%

Middlegame93.9%

Endgame95.1%

Clutch Factor

Performance under pressure

+2%

Winning (+2 or more)93%

69 Games

Equal position93%

88 Games

Losing (-2 or more)91%

29 Games

Problematic Pieces

Which pieces cause most errors?

♖

22%

34 errors

♞

19%

29 errors

♙

19%

29 errors

♗

14%

21 errors

♕

14%

21 errors

♔

13%

20 errors

Critical Moment

When does the first serious error occur?

Move 39average

1-15

16-25

26-35

36-45

46+

27% of blunders occur between move 16-25. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

5

8

6

5

4

7

5

5

4

4

abcdefgh

Many

Few

Critical squares

e58 err

e47 err

h56 err

c45 err

d35 err

e5/e4 concentrate most errors. Force decisions in those zones.

Recent Games

W

Arkadan, Adib2215

Titled Tue 26th May 2026 · 26 May 2026

0-1

W

Postnikov, Artem2292

Titled Tue 26th May 2026 · 26 May 2026

0-1

L

Caruana, Fabiano2788

Titled Tue 26th May 2026 · 26 May 2026

0-1

D

Drygalov, Sergey2530

Titled Tue 26th May 2026 · 26 May 2026

½-½

W

Stankovic, Boris2282

Titled Tue 26th May 2026 · 26 May 2026

0-1

L

Erigaisi Arjun2751

Titled Tue 26th May 2026 · 26 May 2026

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

Reti: Double Fianchetto

62.5%

8 GamesLow sample·Loses

1.Nf3 Nf6 2.g3 g6

Reti vs King's Indian

58.3%

12 Games·Loses

1.Nf3 Nf6 2.c4 g6

Strengths

AVOID

White

Caro-Kann

75.0%

16 Games·Wins

1.e4 c6 2.Nf3 d5

Black

French: Classical

48.9%

45 Games·Wins

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

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#25Nc5??

Tactics

vs Ravi

OTB·2025

▶

#29Qg2??

Tactics

vs Sriram Adarsh Uppala

Blitz·2025

▶

#44Kh1??

Endgame

vs Quizon

OTB·2025

▶

#40c6??

Tactics

vs Mariano

OTB·2025

▶

#42Rc8??

Endgame

vs Sushanth Kamabathula

OTB·2025

▶

#34gxh4??

Tactics

vs Chen

OTB·2025

▶

#23Rbe1??

Tactics

vs Ling

Blitz·2024

▶

#20Kf1??

Tactics

vs Soo

Blitz·2024

▶

#49Kg8??

Endgame

vs Barbosa

Blitz·2024

▶

#56hxg3??

Endgame

vs Benjamin

Blitz·2024

Endgame Statistics

22 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2026

2025

2024

2023

2022

2020

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

272 Games

48%31%21%

Move	Games	Performance	%
1.e4	127		64%
1.d4	73		54%
1.c4 Strong	72		72%

1.e4

64%

127

1.d4

54%

73

1.c4

72%

72

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