| 12 oct 2026 | Ruiz Buendia, Miguel 2377 | 0-1 | Sos Andreu, Eric 2376 | B12 Caro-Kann Defense: Maróczy Variation | II Magistral Internacional La Nucía | 9 · mesa 5 |
| 11 oct 2026 | Fiorito, Joaquin 2414 | 1-0 | Ruiz Buendia, Miguel 2377 | A35 English Opening: Symmetrical Variation, Four Knights Variation | II Magistral Internacional La Nucía | 8 · mesa 1 |
| 10 oct 2026 | Valenzuela Gomez, Fernando 2336 | 0-1 | Ruiz Buendia, Miguel 2377 | C67 Ruy Lopez: Berlin Defense, l'Hermet Variation, Berlin Wall Defense | II Magistral Internacional La Nucía | 7 · mesa 5 |
| 9 oct 2026 | Fiorito, Francisco 2482 | 0-1 | Ruiz Buendia, Miguel 2377 | A05 Zukertort Opening: Nimzo-Larsen Variation | II Magistral Internacional La Nucía | 5 · mesa 4 |
| 9 oct 2026 | Ruiz Buendia, Miguel 2377 | 1-0 | Otero Marino, Alain 2314 | B10 Caro-Kann Defense: Endgame Offer | II Magistral Internacional La Nucía | 6 · mesa 2 |
| 8 oct 2026 | Ruiz Buendia, Miguel 2377 | 0-1 | Martinez Duany, Lelys Stanley 2412 | C93 Ruy Lopez: Closed, Smyslov Defense | II Magistral Internacional La Nucía | 4 · mesa 3 |
| 7 oct 2026 | Ruiz Buendia, Miguel 2377 | 1-0 | Macias Pino, Diego 2499 | B92 Sicilian Defense: Najdorf Variation, Opocensky Variation | II Magistral Internacional La Nucía | 2 · mesa 4 |
| 7 oct 2026 | Del Rio De Angelis, Salvador Gab 2422 | ½-½ | Ruiz Buendia, Miguel 2377 | E41 Nimzo-Indian Defense: Rubinstein System | II Magistral Internacional La Nucía | 3 · mesa 3 |
| 6 oct 2026 | Munoz, Miguel 2325 | ½-½ | Ruiz Buendia, Miguel 2377 | B20 Sicilian Defense: Lasker-Dunne Attack | II Magistral Internacional La Nucía | 1 · mesa 2 |
| 10 sept 2026 | Manafov, Vugar 2448 | 1-0 | Ruiz Buendia, Miguel 2345 | D00 Queen's Pawn Game: Accelerated London System | Guba Open 2026 | Group A | 9 · mesa 3 |
| 9 sept 2026 | Ruiz Buendia, Miguel 2345 | ½-½ | Audi Ameya 2417 | C72 Ruy Lopez: Morphy Defense, Modern Steinitz Defense | Guba Open 2026 | Group A | 8 · mesa 4 |
| 8 sept 2026 | Mozharov, Mikhail 2513 | ½-½ | Ruiz Buendia, Miguel 2345 | D39 Queen's Gambit Declined: Ragozin Defense, Vienna Variation | Guba Open 2026 | Group A | 7 · mesa 2 |
| 7 sept 2026 | Babazada, Khazar 2489 | ½-½ | Ruiz Buendia, Miguel 2345 | C65 Ruy Lopez: Berlin Defense, Anti-Berlin Variation | Guba Open 2026 | Group A | 5 · mesa 4 |
| 7 sept 2026 | Ruiz Buendia, Miguel 2345 | 1-0 | Kakavand, Ramtin 2208 | C54 Italian Game: Classical Variation, Giuoco Pianissimo | Guba Open 2026 | Group A | 6 · mesa 9 |
| 6 sept 2026 | Ruiz Buendia, Miguel 2345 | 1-0 | Kaldarova, Ayaulym 2045 | C54 Italian Game: Classical Variation, Greco Gambit, Traditional Line | Guba Open 2026 | Group A | 4 · mesa 12 |
| 5 sept 2026 | Ruiz Buendia, Miguel 2345 | 1-0 | Salimov, Shovkat 2035 | C02 French Defense: Advance Variation, Euwe Variation | Guba Open 2026 | Group A | 2 · mesa 18 |
| 5 sept 2026 | Baghirov, Mahammad 2136 | ½-½ | Ruiz Buendia, Miguel 2345 | A46 Indian Defense: London System | Guba Open 2026 | Group A | 3 · mesa 13 |
| 4 sept 2026 | Reshad, Radin 1949 | ½-½ | Ruiz Buendia, Miguel 2345 | E42 Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | Guba Open 2026 | Group A | 1 · mesa 17 |
| 28 ago 2026 | Ruiz Buendia, Miguel 2345 | 0-1 | Berdayes Ason, Dylan Isidro 2463 | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | XXVII Open Internacional de Sants - Ciutat de Barcelona 2026 | Group A | 8 · mesa 14 |
| 27 ago 2026 | Ruiz Buendia, Miguel 2345 | 0-1 | Chasin, Nico 2470 | B31 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | XXVII Open Internacional de Sants - Ciutat de Barcelona 2026 | Group A | 6 · mesa 9 |
| 23 ago 2026 | Kuru, Atilla 2508 | 1-0 | Ruiz Buendia, Miguel 2345 | C54 Italian Game: Classical Variation, Giuoco Pianissimo | XXVII Open Internacional de Sants - Ciutat de Barcelona 2026 | Group A | 3 · mesa 5 |
| 23 may 2026 | Ruiz Buendia, Miguel 2095 | 1-0 | Abalos San Jose, Belen 1650 | C41 Philidor Defense: Exchange Variation | IV Torneo Ajedrez Villa de Noblejas | 2 · mesa 9 |
| 23 may 2026 | Ruiz Buendia, Miguel 2095 | 1-0 | Aspron Cabanas, Roberto 1853 | B50 Sicilian Defense | IV Torneo Ajedrez Villa de Noblejas | 6 · mesa 7 |
| 23 may 2026 | Penas Hernandez, Yolanda 1853 | 0-1 | Ruiz Buendia, Miguel 2095 | B92 Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line | IV Torneo Ajedrez Villa de Noblejas | 7 · mesa 6 |
| 23 may 2026 | Ruiz Buendia, Miguel 2095 | 1-0 | Lopez Paniego, Noel 1978 | C64 Ruy Lopez: Classical Variation, Central Variation | IV Torneo Ajedrez Villa de Noblejas | 8 · mesa 7 |
| 23 may 2026 | Ruiz Vazquez, Javier 2201 | 1-0 | Ruiz Buendia, Miguel 2095 | B90 Sicilian Defense: Najdorf Variation | IV Torneo Ajedrez Villa de Noblejas | 9 · mesa 3 |
| 8 abr 2026 | Oro, Faustino 2528 | 1-0 | Ruiz Buendia, Miguel 2299 | A35 English Opening: Symmetrical Variation, Four Knights Variation | V OPEN CHESS MENORCA 2026 | 2 · mesa 26 |
| 5 abr 2026 | Ruiz Buendia, Miguel 2299 | 0-1 | Amartuvshin, Ganzorig 2418 | B46 Sicilian Defense: Taimanov Variation | X Open Internacional de Ajedrez Semana Santa San Vicente del Raspeig 2026 A | 8 · mesa 26 |
| 4 abr 2026 | Ruiz Buendia, Miguel 2299 | 0-1 | Xie, Kaifan 2460 | C70 Ruy Lopez: Morphy Defense, Schliemann Defense Deferred | X Open Internacional de Ajedrez Semana Santa San Vicente del Raspeig 2026 A | 6 · mesa 18 |
| 3 abr 2026 | Fiorito, Joaquin 2432 | 0-1 | Ruiz Buendia, Miguel 2299 | E42 Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | X Open Internacional de Ajedrez Semana Santa San Vicente del Raspeig 2026 A | 5 · mesa 29 |
| 30 mar 2026 | Ruiz Buendia, Miguel 2279 | 0-1 | Stefansson, Vignir Vatnar 2511 | B29 Sicilian Defense: Nimzowitsch Variation, Advance Variation | Reykjavik Open 2026 | 8 · mesa 5 |
| 28 mar 2026 | Ruiz Buendia, Miguel 2279 | 0-1 | Sochacki, Christophe 2459 | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | Reykjavik Open 2026 | 6 · mesa 28 |
| 26 mar 2026 | Ruiz Buendia, Miguel 2279 | ½-½ | Brodsky, David 2505 | B31 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | Reykjavik Open 2026 | 2 · mesa 20 |
| 26 mar 2026 | Wadsworth, Matthew J 2522 | 1-0 | Ruiz Buendia, Miguel 2279 | D78 Neo-Grünfeld Defense: Classical Variation, Original Defense | Reykjavik Open 2026 | 3 · mesa 30 |
| 20 feb 2026 | Ruiz Buendia, Miguel 2302 | 0-1 | Vergara Anton, Diego 2432 | C10 French Defense: Rubinstein Variation, Blackburne Defense | I Torneo Internacional de Ajedrez Ciudad de Pamplona - Pepe Leuza in Memoriam | 9 · mesa 4 |
| 18 feb 2026 | Ruiz Buendia, Miguel 2302 | 1-0 | Mizzi, Steve 1832 | C16 French Defense: Winawer Variation, Advance Variation | I Torneo Internacional de Ajedrez Ciudad de Pamplona - Pepe Leuza in Memoriam | 6 · mesa 17 |
| 18 feb 2026 | Merino Olaverri, Jon 2038 | 0-1 | Ruiz Buendia, Miguel 2302 | D00 Queen's Pawn Game: Accelerated London System | I Torneo Internacional de Ajedrez Ciudad de Pamplona - Pepe Leuza in Memoriam | 7 · mesa 12 |
| 18 feb 2026 | Ruiz Buendia, Miguel 2302 | 1-0 | Sola Plaza, Gregorio 1976 | B12 Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | I Torneo Internacional de Ajedrez Ciudad de Pamplona - Pepe Leuza in Memoriam | 8 · mesa 8 |
| 17 feb 2026 | Ruiz Buendia, Miguel 2302 | 1-0 | Salas Giralda, Luca 1797 | B46 Sicilian Defense: Taimanov Variation | I Torneo Internacional de Ajedrez Ciudad de Pamplona - Pepe Leuza in Memoriam | 4 · mesa 12 |
| 17 feb 2026 | Barcelo Melnyk, Marc 2078 | 1-0 | Ruiz Buendia, Miguel 2302 | B90 Sicilian Defense: Najdorf Variation, English Attack | I Torneo Internacional de Ajedrez Ciudad de Pamplona - Pepe Leuza in Memoriam | 5 · mesa 10 |
| 16 feb 2026 | Goni Sierro, Jon 2143 | 1-0 | Ruiz Buendia, Miguel 2302 | E71 King's Indian Defense: Makogonov Variation | I Torneo Internacional de Ajedrez Ciudad de Pamplona - Pepe Leuza in Memoriam | 3 · mesa 8 |
| 15 feb 2026 | Ruiz Buendia, Miguel 2302 | ½-½ | Pedchenko Bondar, Alexandr 2124 | C80 Ruy Lopez: Open, Main Line | I Torneo Internacional de Ajedrez Ciudad de Pamplona - Pepe Leuza in Memoriam | 2 · mesa 6 |
| 14 feb 2026 | Pascual Garcia, Martin 2055 | 0-1 | Ruiz Buendia, Miguel 2302 | A20 English Opening: King's English Variation | I Torneo Internacional de Ajedrez Ciudad de Pamplona - Pepe Leuza in Memoriam | 1 · mesa 11 |
| 4 ene 2026 | Meshkovs, Nikita 2567 | 1-0 | Ruiz Buendia, Miguel 2316 | D02 Queen's Pawn Game: Symmetrical Variation | Rilton Cup | 8 · mesa 12 |
| 18 dic 2025 | Prado Acebo, Ines 2206 | 1-0 | Ruiz Buendia, Miguel 2370 | D12 Slav Defense: Quiet Variation, Schallopp Defense | CE Individual Absoluto 2025 | 8 · mesa 11 |
| 17 dic 2025 | Ruiz Buendia, Miguel 2370 | 1-0 | Hernandez Leon, Alberto 2241 | B28 Sicilian Defense: O'Kelly Variation, Réti System | CE Individual Absoluto 2025 | 7 · mesa 15 |
| 16 dic 2025 | Navarro Martinez, Victor 2269 | ½-½ | Ruiz Buendia, Miguel 2370 | E49 Nimzo-Indian Defense: Normal Variation, Botvinnik System | CE Individual Absoluto 2025 | 6 · mesa 16 |
| 15 dic 2025 | Ruiz Buendia, Miguel 2370 | 0-1 | Pichot, Alan 2597 | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | CE Individual Absoluto 2025 | 5 · mesa 5 |
| 14 dic 2025 | Cuenca Jimenez, Jose Fernando 2491 | ½-½ | Ruiz Buendia, Miguel 2370 | A09 Réti Opening | CE Individual Absoluto 2025 | 4 · mesa 5 |
| 13 dic 2025 | Ruiz Buendia, Miguel 2370 | 1-0 | Calvo Gonzalez, Jose Felix 2213 | B90 Sicilian Defense: Najdorf Variation, English Attack | CE Individual Absoluto 2025 | 3 · mesa 17 |