Pereira, Ruben

POR POR·Born 1991·FIDE #1903063

2440Classical

2361Rapid

2332Blitz

Statistics

Total483

Wins279

Draws112

Losses92

58%23%19%

Play Style

before facing themWhat you need to know before facing them

Elite accuracy: 92.8% average

Plays 2.3% better with white

Solid conversion: 86%

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 as

(83% in 23 games)

Vulnerable to 1.c4

(only 40%)

Play against Pereira's Twin

Uses their openings, level & style

Practice against a bot that uses their real openings and playing style

Ready to play

483 games analyzed

Deep Analysis

Stockfish 18 · Classical · 53 analyzedStockfish 18 · Classical games · 53 analyzed

Accuracy by phase

Opening

96.1%

Middlegame

93.3%

Endgame

94.7%

Clutch Factor

+2%

Winning (+2)Winning (+2)

93%28g

EqualEqual position

93%15g

Losing (−2)Losing (−2)

91%10g

Accuracy under pressure

Problematic Pieces — which cause most errors?

19%

8 err

19%

8 err

19%

8 err

16%

7 err

14%

6 err

14%

6 err

Critical Moment

Move 41 avg

1-15

16-25

40%

26-35

20%

36-45

40%

46+

40% of blunders occur after move 26-35 — keep tension until then.of blunders occur after move 26-35 — keep tension until then.

Error Heatmap — where do errors occur?

Few

Many

Errors mapped

Hotspot zone

a7 / d5

Critical squares

3 err

2 err

a7/d5 concentrate most errors. Force decisions in those zones.

Openings

483 gamesBased on 483 player games

Weaknesses

— exploit these— exploit these lines

No significant weaknesses detected as white

No significant weaknesses detected as black

Strengths

— avoid these— avoid these lines

aswhite66.7%wins

Ruy Lopez: Morphy — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a618 g18 games · last played 7 months ago

aswhite63.2%wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d619 g19 games · last played 2 years ago

asblack54.0%wins

Sicilian: d6 Systems — 1.e4 c5 2.Nf3 d663 g63 games · last played 2 years ago

Critical Blunders

10 errors · Stockfish

#59Ke5??Endgamevs RibeiroOTB · 2025

#46Ne4+??Endgamevs Sabria BatlleOTB · 2025

#44Be3??Endgamevs LoefflerOTB · 2024

#25Ne7??Tacticsvs FernandesBlitz · 2024

#19Bc2??Tacticsvs FrutuosoBlitz · 2024

#22Qf5??Tacticsvs RyabukhinBlitz · 2024

#67Rxf3??Endgamevs RibeiroOTB · 2023

#21Nd5??Tacticsvs LoefflerOTB · 2023

#31Bf6??Tacticsvs PipirasOTB · 2022

#24Nf3??Tacticsvs SilvaBlitz · 2022

Recent Games

483 games

Loss

Gorodetzky, David(2498)

Portuguese Top League · 19 Jul 2026

1-0

Win

Bernardo, Daniel Madureira(1983)

Portuguese Top League · 17 Jul 2026

0-1

Win

Cordeiro,Joao Carlos Santos F(2099)

Portuguese Top League · 15 Jul 2026

0-1

Draw

Martinez Duany, Lelys Stanley(2438)

Portuguese Top League · 13 Jul 2026

½-½

Loss

Gomez Navais, Marcal(2188)

TCh-CAT GpA Final 2026 · 11 Apr 2026

1-0

Win

Camelo, Agostinho

Equipas SR · 24 Jan 2026

1-0

Endgame Statistics

PRO34 endgames (54%) · avoid Rook vs Rook (12%)

Strongest

79.4%

R+Bishop vs R+Knight

Weakest

60.6%

Pure Pawn

Reaches Endgame

54%

34 / 63

B vs N Pref

52.4%·47.8%

prefers the bishop

PiecesTypeWin %games

Rook + Equal Minors

77.9%353

R+Bishop vs R+Knight

79.4%306

Rook vs Minor (Exchange)

73.7%281

Rook vs Rook

72.6%252

Rook vs Two Minors

78.1%160

Pure Pawn

60.6%109

Rook + Equal Minors77.9%353

R+Bishop vs R+Knight79.4%306

Rook vs Minor (Exchange)73.7%281

Rook vs Rook72.6%252

Rook vs Two Minors78.1%160

Pure Pawn60.6%109

Weak in Rook vs Rook: only 12% win rate (8 games) — Force thisShow all 14 types

Unlock Endgame Statistics

14 endgame categories — discover where they collapse under pressure

Repertoire

PRO

Move arrowsmost-played moves

Starting Position

SF18

232 games

62%25%13%

Move	games	%
1.e4Strong	202	74%
1.Nf3Strong	16	75%
1.e3Strong	13	81%
1.d4Strong	1	100%

MovegamesPerf%

1.e4Strong

202

74%

1.Nf3Strong

75%

1.e3Strong

81%

1.d4Strong

100%