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

Indjic, Aleksandar

SRB SRB·Born 1995·FIDE #911925·5,722 Games

Classical26025,021 Games

Rapid2569249 Games

Blitz2657504 Games

Statistics

5722

Total

3153

Wins

1211

Draws

1356

Losses

55%21%24%

Play Style

What you need to know before facing them

Elite accuracy: 93.3% average

Solid conversion: 85%

Very consistent (89%)

Very precise: only 0.1 blunders/game

Dominates 1.b3 ♔ (96% in 12 games)

Deep Analysis

Stockfish 18 · Classical games · 865 analyzed

Accuracy by phase

Opening96.1%

Middlegame93.1%

Endgame94.9%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)94%

217 Games

Equal position95%

191 Games

Losing (-2 or more)91%

92 Games

Problematic Pieces

Which pieces cause most errors?

♙

24%

80 errors

♖

22%

74 errors

♗

16%

53 errors

♕

15%

49 errors

♔

13%

43 errors

♞

10%

34 errors

Critical Moment

When does the first serious error occur?

Move 44average

1-15

16-25

26-35

36-45

46+

47% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

8

11

9

9

9

12

11

10

9

9

abcdefgh

Many

Few

Critical squares

e512 err

e611 err

f511 err

d410 err

c39 err

e5/e6 concentrate most errors. Force decisions in those zones.

Recent Games

W

Stankovic, Boris2282

Titled Tue 26th May 2026 · 26 May 2026

1-0

L

Weishaeutel, Moritz2393

Titled Tue 26th May 2026 · 26 May 2026

1-0

D

Andreikin, Dmitry2710

Titled Tue 26th May 2026 · 26 May 2026

½-½

W

Belov, Aleksei R.2286

Titled Tue 26th May 2026 · 26 May 2026

0-1

D

Gurevich, Neria2219

Titled Tue 26th May 2026 · 26 May 2026

½-½

W

Devaev, Alexander2306

Titled Tue 26th May 2026 · 26 May 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Scotch: Mieses

55.6%

9 GamesLow sample·Loses

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6

English: Four Knights

44.4%

9 GamesLow sample·Loses

1.c4 e5 2.Nc3 Nf6

Black

Sicilian: Alapin

60.0%

15 Games·Loses

1.e4 c5 2.c3 d5

Strengths

AVOID

White

Queen's Gambit Declined

56.3%

190 Games·Wins

1.d4 d5 2.c4 e6

Scotch: Classical

70.0%

10 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5

Black

English vs 1...e5

77.8%

18 Games·Wins

1.c4 e5 2.Nc3 Bb4

Caro-Kann: Exchange

75.0%

16 Games·Wins

1.e4 c6 2.d4 d5 3.exd5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#31Rf6??

Tactics

vs Naiditsch

Blitz·2025

▶

#48exd6??

Endgame

vs Matlakov

Blitz·2025

▶

#50Bf3??

Endgame

vs Bai

Blitz·2025

▶

#34Rg3??

Tactics

vs Caruana

Blitz·2025

▶

#56Kxe3??

Endgame

vs Sargsyan

Blitz·2025

▶

#43Re7??

Endgame

vs Mamedov

Blitz·2025

▶

#64Rg3??

Endgame

vs Hovhannisyan

Blitz·2025

▶

#37c5??

Tactics

vs Sklokin

Rapid·2025

▶

#20Bg5??

Tactics

vs Nikitenko

Blitz·2025

▶

#27Rde1??

Tactics

vs Deac

OTB·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

2894 Games

59%21%20%

Move	Games	Performance	%
1.d4	1767		67%
1.e4 Strong	504		71%
1.Nf3 Strong	311		73%
1.c4	224		68%
1.e3	25		64%
1.Nc3 Strong	19		79%
1.a4 Strong	15		87%
1.b3 Strong	12		96%
1.g3 Strong	9		78%
1.a3	4		50%
1.d3 Strong	2		100%
1.f4	1		50%
1.Nh3 Strong	1		100%

1.d4

67%

1767

1.e4

71%

504

1.Nf3

73%

311

1.c4

68%

224

1.e3

64%

25

1.Nc3

79%

19

1.a4

87%

15

1.b3

96%

12

1.g3

78%

9

1.a3

50%

4

1.d3

100%

2

1.f4

50%

1

1.Nh3

100%

1

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