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

Ter-Sahakyan, Samvel

ARM ARM·Born 1993·FIDE #13302531·4,222 Games

Classical26133,879 Games

Rapid2553103 Games

Blitz2553240 Games

Statistics

4222

Total

2165

Wins

1143

Draws

913

Losses

51%27%22%

Play Style

What you need to know before facing them

Elite accuracy: 94.0% average

Solid conversion: 82%

Very consistent (90%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (75% in 75 games)

Deep Analysis

Stockfish 18 · Classical games · 823 analyzed

Accuracy by phase

Opening97.0%

Middlegame93.8%

Endgame95.1%

Clutch Factor

Performance under pressure

+6%

Winning (+2 or more)95%

211 Games

Equal position95%

224 Games

Losing (-2 or more)89%

65 Games

Problematic Pieces

Which pieces cause most errors?

♕

20%

58 errors

♖

20%

58 errors

♗

18%

51 errors

♙

18%

51 errors

♞

16%

45 errors

♔

9%

27 errors

Critical Moment

When does the first serious error occur?

Move 44average

1-15

16-25

26-35

36-45

46+

35% of blunders occur between move 36-45. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

7

7

8

11

8

13

8

9

7

10

abcdefgh

Many

Few

Critical squares

g513 err

e611 err

c110 err

g49 err

c68 err

g5/e6 concentrate most errors. Force decisions in those zones.

Recent Games

W

Vershinin, Igor2325

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

1-0

W

Leiva, Gianmarco2332

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

1-0

L

Deac, Bogdan-Daniel2650

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

1-0

D

Antonyan, Hamlet2108

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

½-½

L

Yoo, Christopher Woojin2607

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

0-1

D

Terry, Renato2508

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

½-½

Openings

Based on player games

Weaknesses

EXPLOIT!

White

English: Anglo-Indian

50.0%

8 GamesLow sample·Loses

1.c4 Nf6 2.Nc3 g6

Black

Grünfeld

55.6%

9 GamesLow sample·Loses

1.d4 Nf6 2.c4 g6 3.Nc3 d5

Strengths

AVOID

White

Nimzo-Indian: Capablanca

80.0%

15 Games·Wins

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

Sicilian: d6 Systems

56.1%

214 Games·Wins

1.e4 c5 2.Nf3 d6

Black

French: Classical

90.9%

11 Games·Wins

1.e4 e6 2.d4 d5 3.Nc3 Nf6

Sicilian: d6 Systems

46.6%

341 Games·Wins

1.e4 c5 2.Nf3 d6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#35Ne6??

Tactics

vs Wang

OTB·2026

▶

#35Nb3??

Tactics

vs Isaev

OTB·2026

▶

#26Qg5??

Tactics

vs Akkarakaran

OTB·2026

▶

#45Ra1??

Endgame

vs Terry

OTB·2026

▶

#27Bxh5??

Tactics

vs Pakleza

OTB·2026

▶

#25Nd5??

Tactics

vs Liu

OTB·2025

▶

#34Nf7+??

Tactics

vs Momunaliev

OTB·2025

▶

#79Kd4??

Endgame

vs Aravindh

OTB·2025

▶

#38Bf5??

Tactics

vs Xiong

OTB·2025

▶

#13Qa5??

Tactics

vs Safin

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

55%25%20%

Move	Games	Performance	%
1.e4	1255		65%
1.d4 Strong	714		71%
1.Nf3 Strong	75		75%
1.c4 Strong	54		74%
1.b3	10		70%

1.e4

65%

1255

1.d4

71%

714

1.Nf3

75%

75

1.c4

74%

54

1.b3

70%

10

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