Scouting report: Ruben Pereira (IM, POR)

441 over-the-board games in the Chess Stalker database (418 classical, 23 blitz): 57% wins, 24% draws, 20% losses. FIDE rating 2440 standard, 2361 rapid, 2332 blitz. 53 games analyzed with Stockfish: 93% accuracy, 0.11 blunders per game.

  • Opening repertoire of Ruben Pereira as White and Black, with results per line — free.
  • Weaknesses and blunder patterns, evaluated with Stockfish — free.
  • Recent over-the-board games and endgame statistics.
  • Twin Bot: a sparring bot that imitates Ruben Pereira's style so you can rehearse the matchup — free online.

Full report: https://chessstalker.com/fide/1903063 — no account needed.

Chess Stalker

Ruben Pereira

IM

Portugalborn 1991FIDE ID 1903063

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026
2300
2400
2500
Peak2457
2441 · Sep 2023
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Sep 2023Oct 2026
2440
2361
2332
2457peak, Aug 2024
441games
251wins, 57%
104draws, 24%
86losses, 20%

Play style

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.e4 as ♔ (73% in 186 games)
Vulnerable to 1.c4 ♚ (only 40%)

Play against Pereira's Twin

Their real openings, level & style

Based on 441 games

Openings

441 games

Weaknesses

where they slip as ♔ White

No significant weaknesses detected as white

Strengths

what holds up for them as ♔ White
Ruy Lopez: Morphy1.e4 e5 2.♞f3 ♞c6 3.♝b5 a614 games, last played 8 months ago71.4%wins
Sicilian: d6 Systems1.e4 c5 2.♞f3 d619 games, last played 2 years ago63.2%wins

Deep analysis

Stockfish · Classical · 53 analyzed
Accuracy by phase
Opening
96.1%
Middlegame
93.3%
Endgame
94.7%
Clutch factor
+2%
Winning (+2)
93%
Equal
93%
Losing (−2)
91%
Problematic pieces
19%
8 err
19%
8 err
19%
8 err
16%
7 err
14%
6 err
14%
6 err
Critical moment
Move 41 avg
0%
1-15
0%
16-25
40%
26-35
20%
36-45
40%
46+
40% of blunders occur after move 26-35. Keep tension until then.
Error heatmap · Critical squares
3
3
3
Few
Many
a7
3
d5
3
f4
3
c5
2
d6
2
a7/d5 concentrate most errors. Force decisions in those zones.

Critical blunders

some recent costly mistakes
Ribeiro, Rodrigo(2151)

Move 59 · Endgame · OTB · 2025

−17.4e5??
Sabria Batlle, Pol(2259)

Move 46 · Endgame · OTB · 2025

−2.6e4+??
Loeffler, Stefan(2318)

Move 44 · Endgame · OTB · 2024

−4.3e3??
Fernandes, Jose Alberto(1471)

Move 25 · Middlegame · Blitz · 2024

−5.9e7??
Frutuoso, Tiago(1848)

Move 19 · Middlegame · Blitz · 2024

−2.4c2??
Ryabukhin, Roman(2105)

Move 22 · Middlegame · Blitz · 2024

−2.7f5??
Ribeiro, Gustavo(1876)

Move 67 · Endgame · OTB · 2023

−3.4xf3??
Loeffler, Stefan(2352)

Move 21 · Middlegame · OTB · 2023

−2.6d5??
Pipiras, Filipa Fortuna(2139)

Move 31 · Endgame · OTB · 2022

−3.4f6??
Silva, Stephane(2021)

Move 24 · Middlegame · Blitz · 2022

−5.4f3??

Recent games

Gorodetzky, David(2498)

Portuguese Top League · 19 Jul 2026

1–0
Bernardo, Daniel Madureira(1983)

Portuguese Top League · 17 Jul 2026

0–1
Cordeiro,Joao Carlos Santos F(2099)

Portuguese Top League · 15 Jul 2026

0–1
Martinez Duany, Lelys Stanley(2438)

Portuguese Top League · 13 Jul 2026

½–½
Gomez Navais, Marcal(2188)

Catalan Team Championship Group ... · 11 Apr 2026

1–0
Galvan Cipriani, Viviana(2026)

Equipas SR · 24 Jan 2026

½–½

Endgame statistics

Repertoire

PRO
441 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
213 games61%W26%D13%L
Move
1. e4
1863m
61%25%14
73%
1. ♞f3
155y
53%40%
73%
1. e3
118y
64%27%
77%
1. d4
1Apr 2000
100%
100%

🍪 Cookies · Chess Stalker stores in your browser only what it needs to work (session and preferences) and measures its audience with its own cookie-free analytics. Analytics are optional.