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

Erigaisi Arjun

IND IND·Born 2003·FIDE #35009192·5,027 Games

Classical27614,114 Games

Rapid2741425 Games

Blitz2776645 Games

Statistics

5027

Total

2702

Wins

1281

Draws

1041

Losses

54%25%21%

Play Style

What you need to know before facing them

Elite accuracy: 93.7% average

High resilience (72%): Dangerous even when losing

Solid conversion: 88%

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.a3 ♔ (85% in 23 games)

Deep Analysis

Stockfish 18 · Classical games · 1,259 analyzed

Accuracy by phase

Opening96.3%

Middlegame93.6%

Endgame95.3%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)95%

242 Games

Equal position95%

198 Games

Losing (-2 or more)90%

60 Games

Problematic Pieces

Which pieces cause most errors?

♖

25%

73 errors

♙

21%

61 errors

♔

15%

43 errors

♗

14%

41 errors

♕

14%

42 errors

♞

12%

36 errors

Critical Moment

When does the first serious error occur?

Move 40average

1-15

16-25

26-35

36-45

46+

38% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

8

9

11

11

8

8

8

9

9

11

abcdefgh

Many

Few

Critical squares

c311 err

e511 err

f511 err

b39 err

d59 err

c3/e5 concentrate most errors. Force decisions in those zones.

Recent Games

W

Sahbudak, Baris Cinar2137

Titled Tue 26th May 2026 · 26 May 2026

0-1

L

Maghsoodloo, Parham2710

Titled Tue 26th May 2026 · 26 May 2026

0-1

W

Bok, Benjamin2560

Titled Tue 26th May 2026 · 26 May 2026

0-1

W

Vokhidov, Shamsiddin2637

Titled Tue 26th May 2026 · 26 May 2026

1-0

W

Daneshvar, Bardiya2596

Titled Tue 26th May 2026 · 26 May 2026

1-0

L

Martinez Alcantara, Jose Eduardo2650

Titled Tue 26th May 2026 · 26 May 2026

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Petroff: Steinitz Attack

43.8%

16 Games·Loses

1.e4 e5 2.Nf3 Nf6 3.d4

Black

English: Anglo-Indian

55.6%

9 GamesLow sample·Loses

1.c4 Nf6 2.Nc3 g6

Strengths

AVOID

White

1.b3 d5 2.Bb2 Bf5

85.7%

14 Games·Wins

1.b3 d5 2.Bb2 Bf5

1.b3 Nf6 2.Bb2 g6

77.8%

18 Games·Wins

1.b3 Nf6 2.Bb2 g6

Black

Queen's Gambit Declined

52.5%

118 Games·Wins

1.d4 d5 2.c4 e6

French: Classical

50.8%

118 Games·Wins

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

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#34Bg7??

Tactics

vs Bluebaum

OTB·2026

▶

#63Re7??

Endgame

vs Nihal Sarin

Blitz·2026

▶

#74Be2??

Endgame

vs Praggnanandhaa R

Blitz·2026

▶

#50Bc6??

Endgame

vs Niemann

Blitz·2026

▶

#46Kd3??

Endgame

vs So

Blitz·2026

▶

#33Rxb3??

Tactics

vs Anand

Blitz·2026

▶

#27Nb6??

Tactics

vs Nihal Sarin

Blitz·2026

▶

#33Rf4??

Tactics

vs Abdusattorov

Blitz·2025

▶

#25Rd3??

Tactics

vs Yu

Blitz·2025

▶

#30Bd1??

Tactics

vs Tabatabaei

Blitz·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

2553 Games

57%25%18%

Move	Games	Performance	%
1.d4	1044		67%
1.e4	555		66%
1.Nf3 Strong	375		73%
1.c4 Strong	332		76%
1.b3 Strong	160		78%
1.a3 Strong	23		85%
1.g3	19		61%
1.d3 Strong	8		100%
1.c3	7		50%
1.h4 Strong	7		86%
1.h3	5		60%
1.e3	4		63%
1.Nh3 Strong	3		100%
1.a4	3		50%
1.f4 Strong	2		100%
1.Nc3 Strong	2		100%
1.f3 Weak	1		0%
1.b4 Strong	1		100%
1.Na3 Strong	1		100%
1.g4 Strong	1		100%

1.d4

67%

1044

1.e4

66%

555

1.Nf3

73%

375

1.c4

76%

332

1.b3

78%

160

1.a3

85%

23

1.g3

61%

19

1.d3

100%

8

1.c3

50%

7

1.h4

86%

7

1.h3

60%

5

1.e3

63%

4

1.Nh3

100%

3

1.a4

50%

3

1.f4

100%

2

1.Nc3

100%

2

1.f3

0%

1

1.b4

100%

1

1.Na3

100%

1

1.g4

100%

1

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