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

Lubbe, Nikolas

GER GER·Born 1990·FIDE #4694031·956 Games

Classical2469927 Games

Rapid242423 Games

Blitz24526 Games

Statistics

956

Total

465

Wins

238

Draws

253

Losses

49%25%26%

Play Style

What you need to know before facing them

Elite accuracy: 93.5% average

Solid conversion: 89%

Very consistent (91%)

Very precise: only 0.0 blunders/game

Dominates 1.Nf3 ♔ (75% in 50 games)

Deep Analysis

Stockfish 18 · Classical games · 147 analyzed

Accuracy by phase

Opening96.4%

Middlegame93.7%

Endgame95.4%

Clutch Factor

Performance under pressure

+5%

Winning (+2 or more)95%

68 Games

Equal position95%

41 Games

Losing (-2 or more)90%

38 Games

Problematic Pieces

Which pieces cause most errors?

♕

23%

30 errors

♙

20%

26 errors

♖

20%

26 errors

♗

17%

23 errors

♔

11%

14 errors

♞

10%

13 errors

Critical Moment

When does the first serious error occur?

Move 39average

1-15

16-25

26-35

36-45

46+

50% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

6

4

4

4

6

4

6

4

5

4

abcdefgh

Many

Few

Critical squares

d76 err

f56 err

f66 err

c35 err

a64 err

d7/f5 concentrate most errors. Force decisions in those zones.

Recent Games

W

Sholpanbek, Zhansaya2041

Titled Tue 17th Mar 2026 · 17 Mar 2026

0-1

L

Aravindh, Chithambaram VR.2689

Titled Tue 17th Mar 2026 · 17 Mar 2026

0-1

L

Hasangatin, Ramil2428

Titled Tue 17th Mar 2026 · 17 Mar 2026

1-0

W

Mayaud, Raphael2127

Titled Tue 17th Mar 2026 · 17 Mar 2026

1-0

L

Olhovik, Andrei2275

Titled Tue 17th Mar 2026 · 17 Mar 2026

0-1

W

Campos Saez, Sergio2205

Titled Tue 17th Mar 2026 · 17 Mar 2026

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

Ruy Lopez: Morphy

62.5%

8 GamesLow sample·Loses

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6

Strengths

AVOID

White

Sicilian: d6 Systems

73.1%

26 Games·Wins

1.e4 c5 2.Nf3 d6

Black

Sicilian: Rossolimo

100.0%

10 Games·Wins

1.e4 c5 2.Nf3 Nc6 3.Bb5

Queen's Gambit Declined

55.2%

29 Games·Wins

1.d4 d5 2.c4 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#44Rc3??

Endgame

vs Klimkowski

OTB·2024

▶

#63Rb7+??

Endgame

vs Baskin

OTB·2023

▶

#74Nh4??

Endgame

vs Dominguez Perez

Rapid·2023

▶

#75Re5??

Endgame

vs Rodshtein

Rapid·2023

▶

#28Bd6??

Tactics

vs Bologan

Rapid·2023

▶

#52d6??

Endgame

vs Adly

Rapid·2023

▶

#28Rd6??

Tactics

vs Hagner

Rapid·2023

▶

#50e6??

Endgame

vs Ghosh

OTB·2023

▶

#77Ra8??

Endgame

vs Tari

OTB·2022

▶

#27Rd8??

Tactics

vs Balog

OTB·2022

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

493 Games

53%24%23%

Move	Games	Performance	%
1.e4	200		65%
1.d4	199		63%
1.Nf3 Strong	50		75%
1.c4	34		65%
1.a3	4		50%
1.Nc3 Strong	2		100%
1.g3 Weak	2		0%
1.b3 Weak	2		0%

1.e4

65%

200

1.d4

63%

199

1.Nf3

75%

50

1.c4

65%

34

1.a3

50%

4

1.Nc3

100%

2

1.g3

0%

2

1.b3

0%

2

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