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

Arencibia Rodriguez, Walter

CUB CUB·Born 1967·FIDE #3500012·1,737 Games

Classical24861,662 Games

Rapid245249 Games

Blitz237426 Games

Statistics

1737

Total

685

Wins

726

Draws

326

Losses

39%42%19%

Play Style

What you need to know before facing them

Elite accuracy: 91.2% average

Solid conversion: 81%

Very consistent (86%)

Very precise: only 0.1 blunders/game

Dominates 1.c4 ♔ (72% in 29 games)

Deep Analysis

Stockfish 18 · Classical games · 44 analyzed

Accuracy by phase

Opening96.0%

Middlegame92.6%

Endgame93.6%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)93%

13 Games

Equal position92%

12 Games

Losing (-2 or more)89%

19 Games

Problematic Pieces

Which pieces cause most errors?

♙

21%

10 errors

♞

19%

9 errors

♔

17%

8 errors

♗

15%

7 errors

♕

15%

7 errors

♖

15%

7 errors

Critical Moment

When does the first serious error occur?

Move 41average

1-15

16-25

26-35

36-45

46+

33% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

3

2

2

2

4

2

3

1

2

2

abcdefgh

Many

Few

Critical squares

g54 err

f33 err

g83 err

b62 err

c52 err

g5/f3 concentrate most errors. Force decisions in those zones.

Recent Games

L

Marcos, Marvin2019

Sharjah Blitz 2023 · 28 Mar 2023

1-0

W

Murtaza, Ali2145

Sharjah Blitz 2023 · 28 Mar 2023

1-0

L

Iordachescu, Viorel2584

Sharjah Blitz 2023 · 28 Mar 2023

0-1

W

Acedo, Rowelyn1778

Sharjah Blitz 2023 · 28 Mar 2023

1-0

W

Dr. Murtaza Ali2145

Sharjah Blitz 2023 · 28 Mar 2023

1-0

W

Carandang, Roberto1853

Sharjah Blitz 2023 · 28 Mar 2023

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Sicilian: Classical

80.0%

10 Games·Wins

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6

Black

French: Advance

80.0%

10 Games·Wins

1.e4 e6 2.d4 d5 3.e5

Ruy Lopez: Steinitz Deferred

61.5%

13 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#45Rxa4??

Endgame

vs Murtaza

Blitz·2023

▶

#73Bb6??

Endgame

vs Acedo

Blitz·2023

▶

#38Re8??

Tactics

vs Marcos

Blitz·2023

▶

#63Rc3??

Endgame

vs Arellano

Rapid·2023

▶

#38Ke7??

Tactics

vs Zubarev

OTB·2022

▶

#50Rb6??

Endgame

vs Farahat

OTB·2022

▶

#32Nxc3??

Tactics

vs Erdogdu

Blitz·2022

▶

#34Rh5??

Tactics

vs Miladinovic

Blitz·2022

▶

#31Re6??

Tactics

vs Salem

Blitz·2022

▶

#35Rxf2??

Tactics

vs Nowroozian

Blitz·2022

Endgame Statistics

22 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2023

2022

2020

2019

2018

2016

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

869 Games

42%42%16%

Move	Games	Performance	%
1.d4	488		64%
1.e4	220		59%
1.Nf3	107		66%
1.c4 Strong	29		72%
1.b3	19		63%
1.g3	6		58%

1.d4

64%

488

1.e4

59%

220

1.Nf3

66%

107

1.c4

72%

29

1.b3

63%

19

1.g3

58%

6

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