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

Gallego Alcaraz, Andres Felipe

COL COL·Born 1989·FIDE #4402669·783 Games

Classical2486727 Games

Rapid237034 Games

Blitz234022 Games

Statistics

783

Total

369

Wins

212

Draws

202

Losses

47%27%26%

Play Style

What you need to know before facing them

Elite accuracy: 92.5% average

Plays 2.8% better with white

Very consistent (83%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (67% in 12 games)

Deep Analysis

Stockfish 18 · Classical games · 63 analyzed

Accuracy by phase

Opening96.2%

Middlegame92.6%

Endgame94.7%

Clutch Factor

Performance under pressure

+3%

Winning (+2 or more)92%

23 Games

Equal position95%

24 Games

Losing (-2 or more)90%

16 Games

Problematic Pieces

Which pieces cause most errors?

♙

25%

13 errors

♕

25%

13 errors

♖

25%

13 errors

♔

17%

9 errors

♗

6%

3 errors

♞

4%

2 errors

Critical Moment

When does the first serious error occur?

Move 41average

1-15

16-25

26-35

36-45

46+

60% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

2

3

2

2

2

2

3

4

3

2

abcdefgh

Many

Few

Critical squares

g34 err

e73 err

f33 err

g23 err

b42 err

g3/e7 concentrate most errors. Force decisions in those zones.

Recent Games

D

Mustafaev, Jamshid2313

World Blitz 2023 · 30 Dec 2023

½-½

W

Kuandykuly, Danis2095

World Blitz 2023 · 30 Dec 2023

0-1

L

Rojas Salas, Steven2172

World Blitz 2023 · 30 Dec 2023

0-1

L

Khusnutdinov, Rustam2429

World Blitz 2023 · 30 Dec 2023

0-1

W

Botiraliev, Abdumajid1986

World Blitz 2023 · 30 Dec 2023

0-1

L

Ponkratov, Pavel2608

World Blitz 2023 · 30 Dec 2023

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Sicilian: e6 Systems

52.4%

21 Games·Loses

1.e4 c5 2.Nf3 e6

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

King's Indian: Main Line

68.4%

19 Games·Wins

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O

Sicilian: d6 Systems

60.0%

20 Games·Wins

1.e4 c5 2.Nf3 d6

Black

Sicilian: Sveshnikov

52.6%

19 Games·Wins

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5

Grünfeld

45.2%

42 Games·Wins

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

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#44Qe5??

Endgame

vs Kakabayev

Blitz·2023

▶

#33Ne6??

Tactics

vs Ponkratov

Blitz·2023

▶

#22Bb5??

Tactics

vs Kuandykuly

Blitz·2023

▶

#31Qxe6??

Tactics

vs Khusnutdinov

Blitz·2023

▶

#19d5??

Tactics

vs Amilal Munkhdalai

Blitz·2023

▶

#38Kg7??

Tactics

vs Mustafaev

Blitz·2023

▶

#27Bd2??

Tactics

vs Tissir

Blitz·2023

▶

#40Ng8??

Tactics

vs Khusenkhojaev

Blitz·2023

▶

#29Be7??

Tactics

vs Xu

Blitz·2023

▶

#47c7??

Endgame

vs Chinguun

Blitz·2023

Endgame Statistics

20 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2023

2022

2021

2020

2019

2018

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

410 Games

52%24%24%

Move	Games	Performance	%
1.d4	261		65%
1.e4	131		63%
1.Nf3	12		67%
1.c4	6		67%

1.d4

65%

261

1.e4

63%

131

1.Nf3

67%

12

1.c4

67%

6

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