IM

Villanueva, Mario

ARG ARG·Born 1984·FIDE #113433·655 Games

Classical2466633 Games
Rapid242411 Games
Blitz235811 Games

Statistics

655

Total

274

Wins

251

Draws

128

Losses

42%38%20%

Play Style

What you need to know before facing them

Elite accuracy: 92.3% average
High resilience (62%): Dangerous even when losing
Very precise: only 0.1 blunders/game
Dominates 1.e4 ♔ (67% in 313 games)
Vulnerable to 1.Nf3 ♚ (only 42%)

Deep Analysis

Stockfish 18 · Classical games · 43 analyzed

Accuracy by phase
Opening97.0%
Middlegame93.5%
Endgame94.2%

Clutch Factor

Performance under pressure

+6%
Winning (+2 or more)95%
18 Games
Equal position91%
20 Games
Losing (-2 or more)89%
5 Games

Problematic Pieces

Which pieces cause most errors?

♞
23%
8 errors
♕
23%
8 errors
♖
20%
7 errors
♙
17%
6 errors
♔
14%
5 errors
♗
3%
1 errors

Critical Moment

When does the first serious error occur?

Move 36average
1-15
16-25
26-35
36-45
46+
75% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

2
1
2
2
2
1
1
2
1
1
abcdefgh
Many
Few
Critical squares
e42 err
e72 err
f52 err
f62 err
h62 err
e4/e7 concentrate most errors. Force decisions in those zones.

Recent Games

W
Tomasi, Albert2328

4th Buenos Aires Open · 25 May 2026

0-1
L
Vasquez Schroeder, Rodrigo2453

4th Buenos Aires Open · 24 May 2026

0-1
W
Jardim, Frederico Rodrigues2321

4th Buenos Aires Open · 23 May 2026

0-1
W
Mendez, Ernesto2293

4th Buenos Aires Open · 23 May 2026

1-0
D
Bazan Romero, Octavio Aaron2301

4th Buenos Aires Open · 22 May 2026

½-½
W
Aguinaga, Maximiliano2205

4th Buenos Aires Open · 21 May 2026

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!
White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID
White
Ruy Lopez: Closed
65.0%
20 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7

Caro-Kann: Advance
64.3%
14 Games·Wins

1.e4 c6 2.d4 d5 3.e5

Black
French: Classical
50.0%
18 Games·Wins

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

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors
▶
#26Qa6??
Tactics
vs Gomez
OTB·2025
▶
#20Bxf5??
Tactics
vs Tristan
OTB·2025
▶
#51Qh6??
Endgame
vs Villca
OTB·2025
▶
#30Qe1??
Tactics
vs Flores Quillas
OTB·2025
▶
#36Na3??
Tactics
vs Lima
OTB·2025
▶
#29Qb7??
Tactics
vs Matsuura
OTB·2025
▶
#60Ke3??
Endgame
vs Hungaski
Rapid·2025
▶
#38Qe4+??
Tactics
vs Flores
Rapid·2025
▶
#38Kf7??
Tactics
vs Rodriguez Vila
Rapid·2025
▶
#46Kf4??
Endgame
vs Bustelo
Rapid·2025
Endgame Statistics

19 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
335 Games
49%34%17%
1.e4
67%
314
1.d4
52%
21
chessstalkerv3.6

Know your enemy. Win more games.

Trust & Privacy

🍪No tracking cookies
🔒SSL encrypted
📊Self-hosted analytics

© 2025-2026 Chess Stalker. Not affiliated with Lichess.org or Chess.com

Made with ♟ for chess players

🍪 Cookies · Chess Stalker uses technical cookies (required for operation) and analytical cookies (to improve the service). Analytical cookies are optional.