| 30 may 2026 | Alsina Leal, Daniel 2493 | 1-0 | Leszko, Bence 2313 | B52 Sicilian Defense: Moscow Variation, Sokolsky Variation | 45. Zalakarosi Sakkfesztivál – Bárczay László emlékverseny | 8 · mesa 3 |
| 5 abr 2026 | Garcia Padron, Jose 2338 | 0-1 | Leszko, Bence 2296 | A13 English Opening: Agincourt Defense | XVIII Memorial Pedro Lezcano Montalvo 2026 | 9 · mesa 6 |
| 4 abr 2026 | Leszko, Bence 2296 | 1-0 | Sosa Suarez, Carla Cristina 2121 | C03 French Defense: Tarrasch Variation | XVIII Memorial Pedro Lezcano Montalvo 2026 | 8 · mesa 11 |
| 3 abr 2026 | Strikovic, Aleksa 2377 | 1-0 | Leszko, Bence 2296 | A13 English Opening: Agincourt Defense | XVIII Memorial Pedro Lezcano Montalvo 2026 | 7 · mesa 4 |
| 2 abr 2026 | Leszko, Bence 2296 | 1-0 | Cruz Pino, Adrian 2109 | B23 Sicilian Defense: Closed, Traditional | XVIII Memorial Pedro Lezcano Montalvo 2026 | 6 · mesa 10 |
| 1 abr 2026 | Song, Yuxin 2451 | ½-½ | Leszko, Bence 2296 | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | XVIII Memorial Pedro Lezcano Montalvo 2026 | 5 · mesa 4 |
| 31 mar 2026 | Leszko, Bence 2296 | ½-½ | Niedbala, Bartlomiej 2393 | D43 Semi-Slav Defense | XVIII Memorial Pedro Lezcano Montalvo 2026 | 4 · mesa 7 |
| 30 mar 2026 | Camino Carrio, Nicanor 2026 | 0-1 | Leszko, Bence 2296 | B56 Sicilian Defense: Kupreichik Variation | XVIII Memorial Pedro Lezcano Montalvo 2026 | 3 · mesa 14 |
| 29 mar 2026 | Leszko, Bence 2296 | 1-0 | Rivero Tacoronte, Gabriel 1967 | A08 King's Indian Attack: Sicilian Variation | XVIII Memorial Pedro Lezcano Montalvo 2026 | 2 · mesa 17 |
| 28 mar 2026 | Guerra Aleman, Marcial 1776 | 0-1 | Leszko, Bence 2296 | A40 English Defense | XVIII Memorial Pedro Lezcano Montalvo 2026 | 1 · mesa 17 |
| 11 sept 2022 | Leszko, Bence 2278 | 1-0 | Ramirez Maillo, Juan Adonay 1857 | A45 Trompowsky Attack | XIV Memorial Pedro Lezcano Montalvo 2022 | 9 · mesa 4 |
| 10 sept 2022 | Konyves, Almos 2274 | 0-1 | Leszko, Bence 2278 | D08 Queen's Gambit Declined: Albin Countergambit | XIV Memorial Pedro Lezcano Montalvo 2022 | 8 · mesa 5 |
| 9 sept 2022 | Leszko, Bence 2278 | 0-1 | Romero Calduch, Sergio 2233 | B11 Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | XIV Memorial Pedro Lezcano Montalvo 2022 | 7 · mesa 5 |
| 8 sept 2022 | Czebe, Attila 2375 | ½-½ | Leszko, Bence 2278 | A04 Zukertort Opening: Kingside Fianchetto | XIV Memorial Pedro Lezcano Montalvo 2022 | 6 · mesa 4 |
| 7 sept 2022 | Leszko, Bence 2278 | ½-½ | Sumets, Andrey 2513 | B50 Sicilian Defense: Modern Variations | XIV Memorial Pedro Lezcano Montalvo 2022 | 5 · mesa 3 |
| 6 sept 2022 | Leszko, Bence 2278 | ½-½ | Pap, Misa 2381 | B22 Sicilian Defense: Alapin Variation | XIV Memorial Pedro Lezcano Montalvo 2022 | 4 · mesa 2 |
| 5 sept 2022 | Perez Perez, Alejandro 1980 | 0-1 | Leszko, Bence 2278 | D01 Rapport-Jobava System | XIV Memorial Pedro Lezcano Montalvo 2022 | 3 · mesa 7 |
| 4 sept 2022 | Roca Marrero, Fernando 1498 | 0-1 | Leszko, Bence 2278 | D02 Queen's Pawn Game: London System, with e6 | XIV Memorial Pedro Lezcano Montalvo 2022 | 1 · mesa 8 |
| 4 sept 2022 | Leszko, Bence 2278 | 1-0 | Almeida Sanchez, Juan Sebastian 1826 | B40 Sicilian Defense: French Variation | XIV Memorial Pedro Lezcano Montalvo 2022 | 2 · mesa 7 |