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

Georgiev, Kiril

BUL BUL·Born 1965·FIDE #2900017·3,100 Games

Classical25252,727 Games

Rapid2578222 Games

Blitz2512198 Games

Statistics

3100

Total

1351

Wins

1279

Draws

469

Losses

44%41%15%

Play Style

What you need to know before facing them

Elite accuracy: 94.6% average

Solid conversion: 88%

Very consistent (93%)

Very precise: only 0.0 blunders/game

Dominates 1.Nf3 ♔ (70% in 253 games)

Deep Analysis

Stockfish 18 · Classical games · 129 analyzed

Accuracy by phase

Opening96.6%

Middlegame94.3%

Endgame95.1%

Clutch Factor

Performance under pressure

+2%

Winning (+2 or more)94%

40 Games

Equal position96%

65 Games

Losing (-2 or more)92%

24 Games

Problematic Pieces

Which pieces cause most errors?

♕

25%

40 errors

♞

19%

30 errors

♖

19%

30 errors

♙

18%

29 errors

♔

10%

15 errors

♗

8%

13 errors

Critical Moment

When does the first serious error occur?

Move 47average

1-15

16-25

26-35

36-45

46+

50% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

4

5

7

8

5

7

6

9

6

6

abcdefgh

Many

Few

Critical squares

c49 err

d68 err

c57 err

d77 err

c26 err

c4/d6 concentrate most errors. Force decisions in those zones.

Recent Games

W

Magold, Filip2501

Grand Prix Bucharest 2026 · 10 May 2026

0-1

D

Hulka, Valentyn2361

Grand Prix Bucharest 2026 · 10 May 2026

½-½

D

Stoyanov, Tsvetan2445

Grand Prix Bucharest 2026 · 10 May 2026

½-½

W

Samunenkov, Ihor2595

Grand Prix Bucharest 2026 · 10 May 2026

1-0

W

Stoleriu, George2379

Grand Prix Bucharest 2026 · 10 May 2026

0-1

D

Gavrilescu, David2545

Grand Prix Bucharest 2026 · 10 May 2026

½-½

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Caro-Kann: Main Line

44.4%

9 GamesLow sample·Loses

1.e4 c6 2.d4 d5 3.Nc3 dxe4

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

King's Indian: Main Line

63.2%

19 Games·Wins

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

Sicilian: e6 Systems

62.5%

24 Games·Wins

1.e4 c5 2.Nf3 e6

Black

Sicilian: d6 Systems

45.8%

299 Games·Wins

1.e4 c5 2.Nf3 d6

Sicilian: e6 Systems

60.0%

10 Games·Wins

1.e4 c5 2.Nf3 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#69d6??

Endgame

vs Santos Latasa

Blitz·2025

▶

#67Rf1+??

Endgame

vs Vukcevic

Blitz·2025

▶

#35Rc1??

Tactics

vs Krasteva

Blitz·2025

▶

#36Qc1??

Tactics

vs Maurizzi

Blitz·2025

▶

#45Nh7??

Endgame

vs Saric

Blitz·2025

▶

#53Nd6+??

Endgame

vs Djurovic

Blitz·2025

▶

#37Qxe5??

Tactics

vs Maier

Blitz·2025

▶

#56Nd4??

Endgame

vs Tilicheev

Rapid·2025

▶

#47Bxf4+??

Endgame

vs Pierrot

OTB·2025

▶

#52Bf1??

Endgame

vs Upleger

Blitz·2024

Endgame Statistics

22 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

1567 Games

50%38%12%

Move	Games	Performance	%
1.d4	892		70%
1.e4	254		64%
1.Nf3 Strong	253		70%
1.c4	157		68%
1.g3 Strong	5		80%
1.b3	4		63%
1.Nc3 Strong	1		100%
1.f4 Weak	1		0%

1.d4

70%

892

1.e4

64%

254

1.Nf3

70%

253

1.c4

68%

157

1.g3

80%

5

1.b3

63%

4

1.Nc3

100%

1

1.f4

0%

1

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