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

IM

Kashlinskaya, Alina

POL POL·Born 1993·FIDE #4198026·3,007 Games

Classical24742,619 Games

Rapid2354185 Games

Blitz2348225 Games

Statistics

3007

Total

1416

Wins

707

Draws

876

Losses

47%24%29%

Play Style

What you need to know before facing them

Elite accuracy: 91.2% average

Solid conversion: 81%

Very consistent (85%)

Very precise: only 0.2 blunders/game

Dominates 1.e4 ♔ (72% in 106 games)

Deep Analysis

Stockfish 18 · Classical games · 690 analyzed

Accuracy by phase

Opening96.6%

Middlegame92.1%

Endgame94.3%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)93%

221 Games

Equal position94%

161 Games

Losing (-2 or more)88%

118 Games

Problematic Pieces

Which pieces cause most errors?

♖

22%

162 errors

♕

20%

143 errors

♙

19%

135 errors

♞

14%

100 errors

♗

13%

95 errors

♔

12%

85 errors

Critical Moment

When does the first serious error occur?

Move 40average

1-15

16-25

26-35

36-45

46+

33% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

22

23

19

19

22

23

21

32

30

22

abcdefgh

Many

Few

Critical squares

f432 err

g430 err

d423 err

f623 err

d722 err

f4/g4 concentrate most errors. Force decisions in those zones.

Recent Games

W

Castro Castro, Joaquin2015

Titled Tue 26th May 2026 · 26 May 2026

0-1

L

Gutman, Gennadi2445

Titled Tue 26th May 2026 · 26 May 2026

1-0

W

Naveen Kumar P2090

Titled Tue 26th May 2026 · 26 May 2026

0-1

L

Dau Khuong Duy2521

Titled Tue 26th May 2026 · 26 May 2026

0-1

L

Gustafsson, Jan2580

Titled Tue 26th May 2026 · 26 May 2026

1-0

L

Krudde, Fitzgerald2242

Titled Tue 26th May 2026 · 26 May 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

King's Indian: Classical

41.7%

12 Games·Loses

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2

Black

Caro-Kann: Advance

57.1%

14 Games·Loses

1.e4 c6 2.d4 d5 3.e5

Catalan

53.8%

13 Games·Loses

1.d4 Nf6 2.c4 e6 3.g3

Strengths

AVOID

White

Sicilian: 2...Nc6

80.0%

10 Games·Wins

1.e4 c5 2.Nf3 Nc6

Reti: Double Fianchetto

68.8%

16 Games·Wins

1.Nf3 Nf6 2.g3 g6

Black

English vs 1...e5

72.7%

11 Games·Wins

1.c4 e5 2.Nc3 Bb4

Caro-Kann: Exchange

70.0%

10 Games·Wins

1.e4 c6 2.d4 d5 3.exd5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#50Qg8+??

Endgame

vs Mulawa

OTB·2025

▶

#41Bxh7??

Endgame

vs Terkiewicz

OTB·2025

▶

#48Qd8+??

Endgame

vs Galperin

OTB·2025

▶

#60Rd2??

Endgame

vs Beydullayeva

OTB·2025

▶

#34Qd2??

Tactics

vs Omonova

OTB·2025

▶

#30Rc1??

Tactics

vs Roebers

OTB·2025

▶

#74Ra6??

Endgame

vs Osmak

OTB·2025

▶

#47g4??

Endgame

vs Muzychuk

OTB·2025

▶

#49Rb7??

Endgame

vs Koneru

OTB·2025

▶

#62Qe1??

Endgame

vs Hryzlova

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

1526 Games

51%21%28%

Move	Games	Performance	%
1.d4	1311		61%
1.e4 Strong	108		71%
1.Nf3	82		62%
1.c4	25		56%

1.d4

61%

1311

1.e4

71%

108

1.Nf3

62%

82

1.c4

56%

25

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