IM
Pereira, Ruben
POR·Born 1991·FIDE #1903063·478 Games
POR Classical2447450 Games
Rapid23610 Games
Blitz233628 Games
Statistics
478
Total
277
Wins
111
Draws
90
Losses
58%23%19%
Play Style
What 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 ♚ (83% in 23 games)
Vulnerable to 1.c4 ♚ (only 40%)
Deep Analysis
Stockfish 18 · Classical games · 53 analyzed
Accuracy by phase
Opening96.1%
Middlegame93.3%
Endgame94.7%
Clutch Factor
Performance under pressure
Winning (+2 or more)93%
28 Games
Equal position93%
15 Games
Losing (-2 or more)91%
10 Games
Problematic Pieces
Which pieces cause most errors?
♗
19%
8 errors
♞
19%
8 errors
♖
19%
8 errors
♔
16%
7 errors
♙
14%
6 errors
♕
14%
6 errors
Critical Moment
When does the first serious error occur?
Move 41average
1-15
16-25
26-35
36-45
46+
40% of blunders occur between move 26-35. Keep tension until that moment.
Error Heatmap
Where do most errors occur?
2
3
2
2
2
3
2
2
3
2
abcdefgh
Many
Few
Critical squares
a73 err
d53 err
f43 err
c52 err
d62 err
a7/d5 concentrate most errors. Force decisions in those zones.
Recent Games
D
Galvan Cipriani, Viviana2026
Equipas SR · 24 Jan 2026
W
Silva, Pedro Gil Ferreira Da2266
Equipas SR · 24 Jan 2026
W
Silva, Miguel Antonio Neto2157
Equipas SR · 24 Jan 2026
W
Camelo, Agostinho
Equipas SR · 24 Jan 2026
W
Alvarez Calzadilla, Jose Avelino
Equipas SR · 24 Jan 2026
W
Carvalho, Vitor Manuel Moreira1624
Equipas SR · 24 Jan 2026
Openings
Based on player games
Weaknesses
EXPLOIT!White
No significant weaknesses detected as White
Black
No significant weaknesses detected as Black
Strengths
AVOIDWhite
Ruy Lopez: Morphy
66.7%18 Games·Wins
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6
Sicilian: d6 Systems
63.2%19 Games·Wins
1.e4 c5 2.Nf3 d6
Black
Sicilian: d6 Systems
54.0%63 Games·Wins
1.e4 c5 2.Nf3 d6
Critical Blunders
Tactical errors analyzed with Stockfish
10 errors
▶
#59Ke5??
Endgame
vs Ribeiro
OTB·2025
▶
#46Ne4+??
Endgame
vs Sabria Batlle
OTB·2025
▶
#44Be3??
Endgame
vs Loeffler
OTB·2024
▶
#25Ne7??
Tactics
vs Fernandes
Blitz·2024
▶
#19Bc2??
Tactics
vs Frutuoso
Blitz·2024
▶
#22Qf5??
Tactics
vs Ryabukhin
Blitz·2024
▶
#67Rxf3??
Endgame
vs Ribeiro
OTB·2023
▶
#21Nd5??
Tactics
vs Loeffler
OTB·2023
▶
#31Bf6??
Tactics
vs Pipiras
OTB·2022
▶
#24Nf3??
Tactics
vs Silva
Blitz·2022
Endgame Statistics
22 endgame categories analyzed — discover where they collapse under pressure
Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO2026
2025
2024
2023
2022
2021
PRO
8
76
5
4
3
2
1a
b
c
d
efgh231 Games
62%25%13%
1.e4
74%201
1.Nf3
75%16
1.e3
81%13
1.d4
100%1