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

Short, Nigel D

ENG ENG·Born 1965·FIDE #400025·4,089 Games

Classical25943,727 Games

Rapid2540221 Games

Blitz2528153 Games

Statistics

4089

Total

1767

Wins

1543

Draws

779

Losses

43%38%19%

Play Style

What you need to know before facing them

Elite accuracy: 92.8% average

Very consistent (83%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (76% in 36 games)

Deep Analysis

Stockfish 18 · Classical games · 524 analyzed

Accuracy by phase

Opening96.3%

Middlegame93.7%

Endgame95.0%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)95%

115 Games

Equal position94%

235 Games

Losing (-2 or more)90%

150 Games

Problematic Pieces

Which pieces cause most errors?

♖

25%

192 errors

♙

20%

153 errors

♕

16%

124 errors

♞

14%

108 errors

♗

13%

96 errors

♔

12%

93 errors

Critical Moment

When does the first serious error occur?

Move 39average

1-15

16-25

26-35

36-45

46+

30% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

21

22

22

21

25

25

24

22

21

21

abcdefgh

Many

Few

Critical squares

e525 err

f525 err

d424 err

c622 err

f422 err

e5/f5 concentrate most errors. Force decisions in those zones.

Recent Games

D

Onyshchuk, Volodymyr2617

Luc Winants Mem 2026 · 9 May 2026

½-½

W

Neiman, Emmanuel2213

Luc Winants Mem 2026 · 9 May 2026

0-1

W

Anton Guijarro, David2657

Luc Winants Mem 2026 · 9 May 2026

1-0

L

Pichot, Alan2581

Luc Winants Mem 2026 · 9 May 2026

1-0

W

Dobrosmyslov, Artem2244

Luc Winants Mem 2026 · 9 May 2026

1-0

D

Bauer,Ch2557

Luc Winants Mem 2026 · 9 May 2026

½-½

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

Reti: Double Fianchetto

62.5%

8 GamesLow sample·Loses

1.Nf3 Nf6 2.g3 d5

Strengths

AVOID

White

Italian: Fried Liver

77.8%

18 Games·Wins

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

Nimzo-Indian: Capablanca

72.7%

11 Games·Wins

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3

Black

QGD: Orthodox

70.0%

10 Games·Wins

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5

English: g3 System

57.1%

14 Games·Wins

1.c4 e5 2.g3 d6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#32Qd2??

Tactics

vs Rusu

OTB·2025

▶

#32Bc8??

Tactics

vs Jacobsen

OTB·2025

▶

#62Rf1??

Endgame

vs Nakamura

OTB·2025

▶

#21c6??

Tactics

vs Shabalov

OTB·2025

▶

#46Rf6??

Endgame

vs Moiseenko

OTB·2025

▶

#51Ka3??

Endgame

vs Makhnev

Rapid·2025

▶

#46Rxc2+??

Endgame

vs Rodshtein

Rapid·2025

▶

#26Nc6??

Tactics

vs Dudin

Rapid·2025

▶

#33Rc8+??

Tactics

vs Koellner

Blitz·2025

▶

#32Nc3??

Tactics

vs De Herdt

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

2159 Games

51%35%14%

Move	Games	Performance	%
1.e4	1849		68%
1.d4 Strong	157		74%
1.c4 Strong	95		74%
1.Nf3 Strong	36		76%
1.b3	11		50%
1.g3 Strong	8		75%
1.b4 Weak	1		0%
1.a3	1		50%
1.Nc3 Strong	1		100%

1.e4

68%

1849

1.d4

74%

157

1.c4

74%

95

1.Nf3

76%

36

1.b3

50%

11

1.g3

75%

8

1.b4

0%

1

1.a3

50%

1

1.Nc3

100%

1

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