| 30 ago 2026 | Stein, Robert 2394 | Barcelo Melnyk, Marc 2220 | 1-0 | A14 Apertura Réti: Anglo-Slav Variation, Bogoljubow Variation, Stonewall Line | XXVII Open Internacional de Sants - Ciutat de Barcelona 2026 | Group A | 49 | Ver |
| 25 ago 2026 | Barcelo Melnyk, Marc 2220 | Ilgililer, Bertug 2046 | 1-0 | B45 Defensa Siciliana: Four Knights Variation | XXVII Open Internacional de Sants - Ciutat de Barcelona 2026 | Group A | 70 | Ver |
| 20 ago 2026 | Moussard, Jules 2602 | Barcelo Melnyk, Marc 2220 | 1-0 | C77 Apertura Española (Ruy López): Morphy Defense, Tarrasch Variation | XXVII Open Internacional de Sants - Ciutat de Barcelona 2026 | Group A | 57 | Ver |
| 30 jun 2026 | Cesar Maestre, Bernardo 2376 | Barcelo Melnyk, Marc 2215 | ½-½ | C77 Apertura Española (Ruy López): Morphy Defense, Anderssen Variation | II Lince Andujar Chess Festival 2026 | 30 | Ver |
| 27 jun 2026 | Jacobson, Brandon 2604 | Barcelo Melnyk, Marc 2215 | 1-0 | A06 Apertura Zukertort | II Lince Andujar Chess Festival 2026 | 49 | Ver |
| 24 jun 2026 | Demchenko, Timofei 2006 | Barcelo Melnyk, Marc 2215 | 0-1 | B50 Defensa Siciliana: Modern Variations | CE SUB10.Vicar 26 | 68 | Ver |
| 10 may 2026 | Barcelo Melnyk, Marc 2158 | Asis Gargatagli, Hipolito 2475 | 1-0 | C78 Apertura Española (Ruy López): Morphy Defense, Møller Variation | Championship of Catalonia 2026 | Individual Absolute | 1st Eliminatory | 48 | Ver |
| 9 may 2026 | Asis Gargatagli, Hipolito 2475 | Barcelo Melnyk, Marc 2158 | ½-½ | B12 Defensa Caro-Kann: Advance Variation, Short Variation | Championship of Catalonia 2026 | Individual Absolute | 1st Eliminatory | 71 | Ver |
| 8 may 2026 | Daniel Garcia Ramos 2442 | Barcelo Melnyk, Marc 2158 | 1-0 | A05 Ataque Indio de Rey | Championship of Catalonia 2026 | Individual Absolute | 2nd Eliminatory | 39 | Ver |
| 8 may 2026 | Barcelo Melnyk, Marc 2158 | Daniel Garcia Ramos 2442 | ½-½ | B15 Defensa Caro-Kann: Tartakower Variation | Championship of Catalonia 2026 | Individual Absolute | 2nd Eliminatory | 32 | Ver |
| 20 abr 2026 | Barcelo Melnyk, Marc 2161 | Savchuk, Oleksandr 2110 | 1-0 | A15 Apertura Inglesa: Anglo-Indian Defense | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O10 | 62 | Ver |
| 20 abr 2026 | Netrebka, Myron 2011 | Barcelo Melnyk, Marc 2161 | 0-1 | B30 Defensa Siciliana: Old Sicilian | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Blitz | O10 | 51 | Ver |
| 17 abr 2026 | Barcelo Melnyk, Marc 2244 | Jefimovs, Akims 2014 | 1-0 | C07 Defensa Francesa: Tarrasch Variation, Open System, Euwe-Keres Line | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Rapid | O10 | 42 | Ver |
| 13 abr 2026 | Barcelo Melnyk, Marc 2244 | Nurshin, Nurali 2059 | ½-½ | B90 Defensa Siciliana: Najdorf Variation, English Attack | FIDE World Cadet & Youth Rapid and Blitz Chess Championships 2026 | Rapid | O10 | 22 | Ver |
| 20 feb 2026 | Barcelo Melnyk, Marc 2078 | Labiano Hernandez, Juan 2272 | 0-1 | B15 Defensa Caro-Kann: Tartakower Variation | Open Pamplona 26 | 22 | Ver |
| 18 feb 2026 | Barcelo Melnyk, Marc 2078 | Portero Rubio, Martin 2196 | 0-1 | B56 Defensa Siciliana: Classical Variation | Open Pamplona 26 | 87 | Ver |
| 18 feb 2026 | Korneev, Oleg 2422 | Barcelo Melnyk, Marc 2078 | ½-½ | A28 Apertura Inglesa: King's English Variation, Four Knights Variation, Quiet Line | Open Pamplona 26 | 31 | Ver |
| 17 feb 2026 | Barcelo Melnyk, Marc 2078 | Ruiz Buendia, Miguel 2302 | 1-0 | B90 Defensa Siciliana: Najdorf Variation, English Attack | Open Pamplona 26 | 31 | Ver |
| 15 feb 2026 | Albornoz Cabrera, Carlos Daniel 2579 | Barcelo Melnyk, Marc 2078 | 1-0 | D37 Gambito de Dama rehusado: Harrwitz Attack, Fianchetto Defense | Open Pamplona 26 | 37 | Ver |
| 14 feb 2026 | Barcelo Melnyk, Marc 2078 | Leiva, Gianmarco 2348 | ½-½ | B18 Defensa Caro-Kann: Classical Variation, Main Line | Open Pamplona 26 | 85 | Ver |