Mario Sierra Pena
ESP · FIDE ID 24579122 · 34 tournament games since 2023
Standard
1988
#2487 in ESP (active)
Rapid
2031
#1299 in ESP (active)
Blitz
1898
#2677 in ESP (active)
Score
35%
9 W · 6 D · 19 L
Opp. avg
2073
Last 34 games
Last game
2026-08-04
Campeonato de España 2026 | Sub-18
Prep summary
- As White: 1.Nf3 in 53% of games (scores 63%), otherwise 1.c4 (27%).
- Against 1.e4: 1...c5 in 5 of 9 games (Sicilian Defense), scoring 20%.
- Against 1.d4: 1...Nf6 in 5 of 5 games (Indian Defense), scoring 30%.
- By opponent strength: 22% against higher-rated players, 69% against lower-rated.
- By colour: 53% with White, 21% with Black.
Based on 34 over-the-board games (12 classical · 7 rapid). 15 with White (53%), 19 with Black (21%).
Openings as White
First move
| 1.Nf3 | 8 | 63% |
| 1.c4 | 4 | 38% |
| 1.e4 | 1 | 0% |
| 1.d4 | 1 | 100% |
Most played
| Opening | Games | Score |
|---|---|---|
| Zukertort Opening: Nimzo-Larsen Variation | 2 | 100% |
| Sicilian Defense: Delayed Alapin Variation, with e6 | 1 | 0% |
| English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | 1 | 100% |
| English Opening: Anglo-Indian Defense, Old Indian Formation | 1 | 0% |
| Queen's Pawn Game: Colle System | 1 | 50% |
Openings as Black
Against 1.e4 (9 games)
| 1...c5 Sicilian Defense | 5 | 20% |
| 1...e6 French Defense | 4 | 13% |
Against 1.d4 (5 games)
| 1...Nf6 Indian Defense | 5 | 30% |
Most played
| Opening | Games | Score |
|---|---|---|
| French Defense: Rubinstein Variation, Fort Knox Variation | 2 | 25% |
| English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 | 2 | 0% |
| Sicilian Defense: Kalashnikov Variation | 2 | 0% |
| Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | 2 | 50% |
| French Defense: Advance Variation, Wade Variation | 1 | 0% |
Recent games
| Date | Opponent and event | Result |
|---|---|---|
| 2026-08-04 | Alonso Lara Mezcua (2092) Campeonato de España 2026 | Sub-18 · classical | L |
| 2026-08-03 | Nicolas Martin Cabeza (2313) Campeonato de España 2026 | Sub-18 · classical | L |
| 2026-08-01 | Diego Cacheiro Blanco (2405) C.E. INDIVIDUAL RÁPIDO SUB-18 | L |
| 2026-02-16 | Dario Hervada Serrano (2070) Campeonatos de Edades CTL 2026 · classical | ½ |
| 2026-02-15 | Heriberto Rubial Blanco (2021) Campeonatos de Edades CTL 2026 · classical | L |
| 2026-02-15 | Adrian Gutierrez Castellanos (1760) Campeonatos de Edades CTL 2026 · classical | W |
| 2025-09-07 | Adan Alvarez Perez (2134) Campeonato de España 2025 | ELO 2300 · classical | L |
| 2025-09-06 | Carlos Asensio Miranda (2254) Campeonato de España 2025 | ELO 2300 · classical | ½ |
| 2025-08 | Lucas Deusa Ballesteros (2138) Campeonato de España 2025 | Sub 18 · classical | L |
| 2025-08 | Eduardo Cabanas Lopez (2110) Campeonato de España 2025 | Sub 18 · classical | ½ |
Data: FIDE rating list (October 2026 list; national ranks count active players) and tournament games broadcast on Lichess since 2020 (open data, CC0). Results are matched to FIDE players by name or FIDE ID and may be incomplete. This page shows public chess results only. Is this you and you want the page removed? Email chessmoose1@gmail.com and we remove it.