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

Kravtsiv, Martyn

UKR UKR·Born 1990·FIDE #14113147·4,215 Games

Classical25983,874 Games

Rapid2641219 Games

Blitz2696122 Games

Statistics

4215

Total

2230

Wins

925

Draws

1059

Losses

53%22%25%

Play Style

What you need to know before facing them

Elite accuracy: 91.4% average

Very consistent (83%)

Very precise: only 0.2 blunders/game

Dominates 1.b3 ♔ (74% in 41 games)

Deep Analysis

Stockfish 18 · Classical games · 268 analyzed

Accuracy by phase

Opening96.4%

Middlegame93.0%

Endgame94.3%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)93%

112 Games

Equal position95%

63 Games

Losing (-2 or more)88%

93 Games

Problematic Pieces

Which pieces cause most errors?

♖

30%

113 errors

♙

18%

70 errors

♗

14%

54 errors

♕

14%

52 errors

♔

12%

46 errors

♞

12%

47 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?

12

11

11

11

14

10

15

14

11

11

abcdefgh

Many

Few

Critical squares

f415 err

d314 err

g514 err

e612 err

d511 err

f4/d3 concentrate most errors. Force decisions in those zones.

Recent Games

L

Duda, Jan-Krzysztof2739

1st 3-0 Thu 28th May 2026 · 28 May 2026

1-0

W

Sneha Halder2232

1st 3-0 Thu 28th May 2026 · 28 May 2026

0-1

D

Lazavik, Denis2621

1st 3-0 Thu 28th May 2026 · 28 May 2026

½-½

L

Suyarov, Mukhammadzokhid2534

1st 3-0 Thu 28th May 2026 · 28 May 2026

0-1

W

Stickler, Florentin2364

1st 3-0 Thu 28th May 2026 · 28 May 2026

1-0

W

Makarian, Rudik2551

1st 3-0 Thu 28th May 2026 · 28 May 2026

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

Scotch: Classical

41.9%

31 Games·Loses

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

1.b3 e5 2.Bb2 Nc6

84.6%

13 Games·Wins

1.b3 e5 2.Bb2 Nc6

Italian: Fried Liver

82.4%

17 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5

Black

Queen's Gambit Declined

53.0%

236 Games·Wins

1.d4 d5 2.c4 e6

Italian: Fried Liver

73.1%

26 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#32Qb5??

Tactics

vs Suleymanli

OTB·2026

▶

#71Kd6??

Endgame

vs Kona

OTB·2026

▶

#27Qxc5??

Tactics

vs Oz

OTB·2026

▶

#30Rd1??

Tactics

vs Podolskyi

Rapid·2025

▶

#45Kxf3??

Endgame

vs Terletsky

Rapid·2025

▶

#26Qxh6??

Tactics

vs Kovalenko

OTB·2025

▶

#49h4??

Endgame

vs Ashraf

OTB·2025

▶

#56h4??

Endgame

vs Bortnyk

OTB·2025

▶

#69Rd4+??

Endgame

vs Liu

OTB·2025

▶

#45Ra8??

Endgame

vs Sevian

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

2108 Games

59%21%20%

Move	Games	Performance	%
1.e4	1942		69%
1.d4 Strong	57		71%
1.Nf3	43		59%
1.b3 Strong	41		74%
1.c4	11		55%
1.g3	6		42%
1.e3	3		67%
1.a4 Strong	1		100%
1.b4 Strong	1		100%
1.f4 Strong	1		100%
1.Nc3 Strong	1		100%
1.g4	1		50%

1.e4

69%

1942

1.d4

71%

57

1.Nf3

59%

43

1.b3

74%

41

1.c4

55%

11

1.g3

42%

6

1.e3

67%

3

1.a4

100%

1

1.b4

100%

1

1.f4

100%

1

1.Nc3

100%

1

1.g4

50%

1

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