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

Korobov, Anton

UKR UKR·Born 1985·FIDE #14105730·3,645 Games

Classical26082,999 Games

Rapid2612362 Games

Blitz2635361 Games

Statistics

3645

Total

1848

Wins

1146

Draws

647

Losses

51%31%18%

Play Style

What you need to know before facing them

Elite accuracy: 94.7% average

Solid conversion: 91%

Very consistent (93%)

Very precise: only 0.0 blunders/game

Dominates 1.e4 ♔ (71% in 234 games)

Deep Analysis

Stockfish 18 · Classical games · 209 analyzed

Accuracy by phase

Opening96.7%

Middlegame94.8%

Endgame95.6%

Clutch Factor

Performance under pressure

+4%

Winning (+2 or more)95%

91 Games

Equal position95%

88 Games

Losing (-2 or more)91%

30 Games

Problematic Pieces

Which pieces cause most errors?

♖

29%

33 errors

♗

19%

22 errors

♕

18%

20 errors

♙

14%

16 errors

♔

11%

13 errors

♞

9%

10 errors

Critical Moment

When does the first serious error occur?

Move 49average

1-15

16-25

26-35

36-45

46+

57% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

4

3

4

4

4

3

4

4

4

5

abcdefgh

Many

Few

Critical squares

c25 err

c64 err

d74 err

e44 err

f34 err

c2/c6 concentrate most errors. Force decisions in those zones.

Recent Games

L

George, Kevin2322

Titled Tue 26th May 2026 · 26 May 2026

1-0

W

Azoulay, Yehonatan2340

Titled Tue 26th May 2026 · 26 May 2026

0-1

W

Klymchuk, Andriy2405

Titled Tue 26th May 2026 · 26 May 2026

1-0

W

Sai Krishna G V2443

Titled Tue 26th May 2026 · 26 May 2026

1-0

W

Antipov, Fedor2152

Titled Tue 26th May 2026 · 26 May 2026

0-1

W

Zhirkov, Vladislav2163

Titled Tue 26th May 2026 · 26 May 2026

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Caro-Kann: Advance

80.0%

10 Games·Wins

1.e4 c6 2.d4 d5 3.e5

King's Indian: Classical

73.8%

42 Games·Wins

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

Black

Sicilian: d6 Systems

52.4%

475 Games·Wins

1.e4 c5 2.Nf3 d6

Reti: Double Fianchetto

75.0%

16 Games·Wins

1.Nf3 Nf6 2.g3 g6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#58Bc4??

Endgame

vs Livaic

OTB·2025

▶

#33Rcb8??

Tactics

vs Risteski

OTB·2025

▶

#67Kf7??

Endgame

vs Winter

OTB·2025

▶

#40d7??

Tactics

vs Van Wely

OTB·2025

▶

#45Rh2??

Endgame

vs Royal

OTB·2025

▶

#30a4??

Tactics

vs Peyrer

Blitz·2024

▶

#25Qd1??

Tactics

vs Bernadskiy

Blitz·2024

▶

#22Nxb4??

Tactics

vs Sarana

Blitz·2024

▶

#45Nc6??

Endgame

vs Pichot

Blitz·2024

▶

#35Kh7??

Tactics

vs Boyer

Blitz·2024

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

1845 Games

53%31%16%

Move	Games	Performance	%
1.d4	1344		69%
1.e4 Strong	234		71%
1.c4	217		70%
1.Nf3	48		69%
1.f4 Weak	2		0%

1.d4

69%

1344

1.e4

71%

234

1.c4

70%

217

1.Nf3

69%

48

1.f4

0%

2

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