| 2 ago 2021 | Rivero Gil, Carlos 1127 | Ver la partida ½-½ | Villodre Miranda, Juan Alonso 1583 | C41 Philidor Defense | ronda 1 · mesa 1 |
| 2 ago 2021 | Goncalves, Nuno Filipe Pocinho 1551 | Ver la partida 1-0 | Blanco Barra, Lucas 1074 | D53 Queen's Gambit Declined | ronda 1 · mesa 2 |
| 2 ago 2021 | Acosta Choursan, Hector | Ver la partida 0-1 | Paiva, Rodrigo Garcia 1532 | B20 Sicilian Defense: Bowdler Attack | ronda 1 · mesa 3 |
| 2 ago 2021 | Diaz Ortiz, Francisco 1527 | Ver la partida 1-0 | Alonso Pereira, Rodrigo | B01 Scandinavian Defense: Main Line, Mieses Variation | ronda 1 · mesa 4 |
| 2 ago 2021 | Arranz Toro, Diego | Ver la partida ½-½ | Caballero Martinez, David 1505 | B87 Sicilian Defense: Sozin Attack, Flank Variation | ronda 1 · mesa 5 |
| 2 ago 2021 | Diaz Perez, Diego 1495 | Ver la partida 1-0 | Asensio Munoz, Ricardo | B50 Sicilian Defense | ronda 1 · mesa 6 |
| 2 ago 2021 | Barrena Garay, Rodrigo | Ver la partida 1-0 | Dorado Gregorio, Javier 1492 | B23 Sicilian Defense: Closed | ronda 1 · mesa 7 |
| 2 ago 2021 | Vigueras Moreno, Fernando 1482 | Ver la partida 1-0 | Castillo Lopez, Catalina | | ronda 1 · mesa 8 |
| 2 ago 2021 | Dominguez Fernandez, Gabriel | Ver la partida 0-1 | Asensio Miranda, Carlos 1475 | B70 Sicilian Defense: Dragon Variation | ronda 1 · mesa 9 |
| 2 ago 2021 | Toro Peguero, Francisco 1465 | Ver la partida 1-0 | Donoso Nieto, Miguel | | ronda 1 · mesa 10 |
| 2 ago 2021 | Gil Romero, Alvaro | Ver la partida 1-0 | Risco Chamizo, Agustin 1440 | A16 English Opening: Anglo-Indian Defense, Queen's Knight Variation | ronda 1 · mesa 11 |
| 2 ago 2021 | Fresno Ballesteros, Jaime 1432 | Ver la partida 0-1 | Gomez Paredes, Isaac | B08 Pirc Defense: Classical Variation, Quiet System | ronda 1 · mesa 12 |
| 2 ago 2021 | Jaraiz Lopez, Guillermo | Ver la partida 0-1 | Saavedra Fernandez, Daniel 1418 | | ronda 1 · mesa 13 |
| 2 ago 2021 | Cuesta Moscoso, Alvaro 1415 | Ver la partida ½-½ | Lobo Bravo, Marco Antonio | A46 Indian Defense: London System | ronda 1 · mesa 14 |
| 2 ago 2021 | Lopez Gonzalez, Victor | Ver la partida ½-½ | Donaire Nieto, Daniel 1414 | D35 Queen's Gambit Declined: Normal Defense | ronda 1 · mesa 15 |
| 2 ago 2021 | Valiente Castro, Alejandro 1382 | Ver la partida 1-0 | Martin Caballero, Adriana | C44 Scotch Game | ronda 1 · mesa 16 |
| 2 ago 2021 | Miron Nastari, Iago | Ver la partida 0-1 | Filipe, Gustavo Castro 1334 | B23 Sicilian Defense: Closed | ronda 1 · mesa 17 |
| 2 ago 2021 | Mena Lena, Antonio 1296 | Ver la partida 1-0 | Mora Parra, Alex | C50 Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | ronda 1 · mesa 18 |
| 2 ago 2021 | Morales Clares, Aaron | Ver la partida ½-½ | Sanz Pueyo, Adrian 1281 | C10 French Defense: Marshall Gambit | ronda 1 · mesa 19 |
| 2 ago 2021 | De Miguel Llanos, Cesar 1268 | Ver la partida 0-1 | Nastari Carvalho, Joana | C50 Italian Game: Giuoco Pianissimo | ronda 1 · mesa 20 |
| 2 ago 2021 | Nunez Nunez, Eduardo | Ver la partida 0-1 | Lopera Fernandez, Fernando 1268 | | ronda 1 · mesa 21 |
| 2 ago 2021 | Ramos Perez, Juan Diego 1267 | Ver la partida 0-1 | Pineiro Toro, Jose Angel | B76 Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | ronda 1 · mesa 22 |
| 2 ago 2021 | Quintales Eugenio, Isaac | Ver la partida 0-1 | Adalid Moll, Pablo 1241 | D02 Queen's Pawn Game: London System, with e6 | ronda 1 · mesa 23 |
| 2 ago 2021 | De Miguel Llanos, Alejandro 1239 | Ver la partida 0-1 | Regadera Tellez, Pablo | D35 Queen's Gambit Declined: Harrwitz Attack | ronda 1 · mesa 24 |
| 2 ago 2021 | Roque Acevedo, Juan Jose | Ver la partida 1-0 | Dominguez Vallejo, Marta 1208 | C44 Scotch Game: Haxo Gambit | ronda 1 · mesa 25 |
| 2 ago 2021 | Fernandez Malaga, Domingo 1188 | Ver la partida 1-0 | Sanchez Guerrero, Hugo | B23 Sicilian Defense: Closed, Traditional | ronda 1 · mesa 26 |
| 2 ago 2021 | Calero Duran, Alberto 1127 | Ver la partida 1-0 | Tena Eugenio, Dario | C40 King's Pawn Game: Busch-Gass Gambit | ronda 1 · mesa 28 |
| 2 ago 2021 | Troiteiro Carrasco, Luis Manuel | Ver la partida 0-1 | Martin Caballero, Mauro 1127 | C44 King's Knight Opening: Normal Variation | ronda 1 · mesa 29 |