P
GM

Petrosian, Arshak B

ARM ARM·Born 1953·FIDE #13300288·1,036 Games

Classical24751,025 Games
Rapid247211 Games
Blitz0 Games

Play against Petrosian, Arshak B's Twin

PRO

Uses their openings, level & style

Statistics

Total

1036

Wins

299

Draws

508

Losses

229
29%49%22%

Play Style

What you need to know before facing them
Elite accuracy: 92.7% average
Very consistent (86%)
Very precise: only 0.1 blunders/game
Dominates 1.c4 ♔ (63% in 24 games)
Vulnerable to 1.e4 ♔ (only 40%)

Deep Analysis

Stockfish 18 · Classical games · 36 analyzed
Accuracy by phase
Opening
96.9%
Middlegame
93.4%
Endgame
94.6%
Clutch Factor — Move accuracy when winning vs. equal vs. losing — does their level drop when the game turns against them?
+6%
Winning (+2 or more)
91%8g
Equal position
94%24g
Losing (-2 or more)
86%4g
Performance under pressure
Problematic Pieces — Which pieces cause most errors?
37%
17 errors
22%
10 errors
17%
8 errors
13%
6 errors
9%
4 errors
2%
1 errors
Critical Moment — When does the first serious error occur?
Move 32 average
0%
33%
33%
33%
0%
1-15
16-25
26-35
36-45
46+
33% of blunders occur between move 16-25. Keep tension until that moment.
Error Heatmap — Where do most errors occur?
6
Few
Many
Critical squares
c4
6 err
b6
3 err
c6
3 err
a6
2 err
b3
2 err
c4/b6 concentrate most errors. Force decisions in those zones.

Openings

Based on player games

Weaknesses

— exploit these lines

No significant weaknesses detected as White

No significant weaknesses detected as Black

Strengths

— avoid these lines
White57.1%Wins
King's Indian: Classical — 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be221 Games · last played 37 years ago

No consistent strengths detected as Black

Critical Blunders

6 errors · Stockfish
Qc4??vs PlaskettOTB · 2019
c4b5??vs TalOTB
b6c4??vs TalOTB
Qc2??vs ReshevskyOTB
Qe5??vs SmyslovOTB
b6c6??vs TalOTB

Recent Games

D
Bruno, Fabio(2433)

World Senior Teams +50 · 24 Apr 2019

½-½
D
Thorhallsson, T.(2425)

World Senior Teams +50 · 22 Apr 2019

½-½
D
Thorhallsson, Throstur(2425)

World Senior Teams +50 · 22 Apr 2019

½-½
W
Plaskett, H James(2437)

World Senior Teams +50 · 21 Apr 2019

1-0
D
Yermolinsky, Alex(2508)

World Senior Teams +50 · 19 Apr 2019

½-½
D
Gruenfeld, Yehuda(2428)

World Senior Teams +50 · 18 Apr 2019

½-½

Endgame Statistics

PRO9 endgame categories analyzed
Endgame Statistics
Reveal weaknesses →
Repertoire
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Move arrowsmost-played moves
Stockfish
535 Games
35%49%16%
MoveGamesPerformance%
1.d4
292
61%
1.Nf3
209
57%
1.c4
24
63%
1.e4
10
40%

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