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

Vaibhav, Suri

IND IND·Born 1997·FIDE #5045185·258 Games

Classical2569250 Games

Rapid25328 Games

Blitz24760 Games

Statistics

258

Total

112

Wins

74

Draws

71

Losses

43%29%28%

Play Style

What you need to know before facing them

Elite accuracy: 91.3% average

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.e4 ♔ (62% in 108 games)

Deep Analysis

Stockfish 18 · Classical games · 18 analyzed

Accuracy by phase

Opening96.1%

Middlegame92.1%

Endgame94.5%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)93%

9 Games

Equal position94%

2 Games

Losing (-2 or more)89%

7 Games

Problematic Pieces

Which pieces cause most errors?

♙

46%

11 errors

♕

25%

6 errors

♖

17%

4 errors

♞

8%

2 errors

♗

4%

1 errors

♔

0%

0 errors

Critical Moment

When does the first serious error occur?

Move 37average

1-15

16-25

26-35

36-45

46+

100% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

4

2

2

1

1

1

1

1

1

1

abcdefgh

Many

Few

Critical squares

d54 err

d42 err

g52 err

b31 err

c11 err

d5/d4 concentrate most errors. Force decisions in those zones.

Recent Games

L

Harikrishna, Pentala2676

2026 Chesscom Open Play I... · 23 Mar 2026

1-0

D

Durarbayli, Vasif2612

2026 Chesscom Open Play I... · 23 Mar 2026

½-½

L

Theodorou, Nikolas2639

2026 Chesscom Open Play I... · 23 Mar 2026

0-1

L

Sokolovsky, Yahli2555

2026 Chesscom Open Play I... · 23 Mar 2026

1-0

D

Hakobyan, Aram2627

2026 Chesscom Open Play I... · 23 Mar 2026

½-½

D

Samadov, Read2508

2026 Chesscom Open Play I... · 23 Mar 2026

½-½

Openings

Based on player games

Weaknesses

EXPLOIT!

White

French: Tarrasch

62.5%

8 GamesLow sample·Loses

1.e4 e6 2.d4 d5 3.Nd2

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Sicilian: 2...Nc6

63.6%

11 Games·Wins

1.e4 c5 2.Nf3 Nc6

Black

Sicilian: e6 Systems

50.0%

18 Games·Wins

1.e4 c5 2.Nf3 e6

Critical Blunders

Tactical errors analyzed with Stockfish

4 errors

▶

#43Qe7??

Endgame

vs Maghsoodloo

OTB·2019

▶

#35Rb3??

Tactics

vs Swaminathan S

OTB·2019

▶

#14e3??

Tactics

vs Lagutin

OTB·2019

▶

#37Nd4??

Endgame

vs Akopian

OTB·2019

Endgame Statistics

5 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2026

2024

2023

2022

2020

2019

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

121 Games

46%31%23%

Move	Games	Performance	%
1.e4	108		62%
1.d4	8		50%
1.Nf3	4		63%
1.c4 Strong	1		100%

1.e4

62%

108

1.d4

50%

8

1.Nf3

63%

4

1.c4

100%

1

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