| 27 feb 2021 | Alvarez Sanchez, Mauro 1286 | 1-0 | Fernandez Briz, Inigo 1159 | C50 Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | 1 · mesa 1 |
| 27 feb 2021 | Garcia Peula, Aimar | 0-1 | Blazquez Lopez, Berna 2204 | D01 Rapport-Jobava System | 1 · mesa 2 |
| 27 feb 2021 | Pons Cabada, Alvaro | 0-1 | Siscar Conill, Aitor 1296 | D43 Semi-Slav Defense: Moscow Variation | 1 · mesa 3 |
| 27 feb 2021 | Alonso Agudo, Mario | 0-1 | Alonso Alvarez, Aitor 2218 | B20 Sicilian Defense: Staunton-Cochrane Variation | 1 · mesa 4 |
| 27 feb 2021 | Biempica Marin, Alvaro 1345 | 1-0 | Mayoral Fernandez, Alberto | C47 Four Knights Game: Italian Variation | 1 · mesa 5 |
| 27 feb 2021 | Garcia Gonzalez, Alfredo | 0-1 | Mulet Durango, Carolina 1408 | B21 Sicilian Defense: Smith-Morra Gambit | 1 · mesa 6 |
| 27 feb 2021 | Alvarez Fernandez, Jose Manuel 1554 | 0-1 | Menendez Perez, Mateo | | 1 · mesa 7 |
| 27 feb 2021 | Arce Cano, Nicolas 1185 | 1-0 | Fuente Vallina, Alvaro | A85 Dutch Defense: Queen's Knight Variation | 1 · mesa 8 |
| 27 feb 2021 | Suarez Limachi, Ismael 1516 | 1-0 | Sanchez Antuna, Andres Avelino 1416 | B76 Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation | 1 · mesa 9 |
| 27 feb 2021 | Hellinga Damstra, Martien 1989 | 1-0 | Lopez Sanchez, Ivan 1054 | C08 French Defense: Tarrasch Variation, Open System | 1 · mesa 10 |
| 27 feb 2021 | Antuna Egocheaga, Rafael Eduardo 1916 | 1-0 | Martin Cabeza, Nicolas 1285 | A03 Bird Opening: Dutch Variation | 1 · mesa 11 |
| 27 feb 2021 | Alvarez Alvarez, Francisco 1426 | 1-0 | Gonzalez Balbuena, Miguel 1083 | D00 Queen's Pawn Game: Accelerated London System | 1 · mesa 12 |
| 27 feb 2021 | Fernandez Trancon, David | 0-1 | Veira De La Fuente, Bernardo 1635 | D02 Queen's Pawn Game: London System, with e6 | 1 · mesa 13 |
| 27 feb 2021 | Quiros Cueto, Pelayo 2199 | 1-0 | Martinez Ramos, Paula 1286 | B52 Sicilian Defense: Moscow Variation, Main Line | 1 · mesa 14 |
| 27 feb 2021 | Muniz Otero, Lucas | 0-1 | Menendez Solar, Jose Carlos 1741 | B02 Alekhine Defense | 1 · mesa 15 |
| 27 feb 2021 | Martinez Rodriguez, Pablo 1874 | 0-1 | Paz Rodriguez, Pedro Javier 1555 | | 1 · mesa 16 |
| 27 feb 2021 | Gonzalez Garcia, Jesus 1270 | 1-0 | Arribas Castro, Mauro | C54 Italian Game: Classical Variation, Giuoco Pianissimo | 1 · mesa 17 |
| 27 feb 2021 | Ahmed Harjour, Arabi 1868 | 0-1 | Canel Celemin, Claudia | C65 Ruy Lopez: Berlin Defense, Beverwijk Variation | 1 · mesa 18 |
| 27 feb 2021 | Le Saos Diaz, Cleo | 0-1 | Mulet Garcia, Luis 1229 | B20 Sicilian Defense: Bowdler Attack | 1 · mesa 19 |
| 27 feb 2021 | De Martin Burtseva, Ivan | 0-1 | Martinez Lopez, Eduardo 2080 | C02 French Defense: Advance Variation, Nimzowitsch System | 1 · mesa 20 |
| 27 feb 2021 | Centron Antuna, Daniel 2181 | 0-1 | Zapparov, Aleksandr 1238 | | 1 · mesa 21 |
| 27 feb 2021 | Garcia Fernandez, Jose Antonio 2004 | 1-0 | Vega Caicedo, Daniel 1100 | A25 English Opening: King's English Variation, Reversed Closed Sicilian | 1 · mesa 22 |
| 27 feb 2021 | Colunga Alvarez, Eduardo 1594 | 1-0 | Saavedra Rodriguez, Daniel | D00 Queen's Pawn Game | 1 · mesa 23 |
| 27 feb 2021 | Rodriguez San Jose, Daniel 1496 | 0-1 | Le Saos Diaz, Patrick | | 1 · mesa 24 |
| 27 feb 2021 | Fernandez Garcia, Daniel | 1-0 | Gonzalez Garcia, Lucia | C50 Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | 1 · mesa 25 |
| 27 feb 2021 | Recuero Guerra, David 2437 | 1-0 | Menendez Perez, Miguel 1346 | E60 Indian Defense: Anti-Grünfeld, Alekhine Variation | 1 · mesa 26 |
| 27 feb 2021 | Fraga Veiguela, David 1166 | 0-1 | Lopez Fernandez, Marcos | C60 Ruy Lopez: Cozio Defense | 1 · mesa 27 |
| 27 feb 2021 | Vela Riba, David | 1-0 | Lucas Gutierrez, Antonio 1101 | B00 King's Pawn Game | 1 · mesa 28 |
| 27 feb 2021 | Cuesta Ramirez, Lorenzo | 0-1 | Gonzalez Muina, David 1139 | C02 French Defense: Advance Variation, Milner-Barry Gambit | 1 · mesa 29 |
| 27 feb 2021 | Pons Cabada, Diego | 0-1 | Zapatero Montes, Sara | C20 King's Pawn Game: Wayward Queen Attack, Kiddie Countergambit | 1 · mesa 30 |
| 27 feb 2021 | Cuevas Fernandez, Jose Alberto 2060 | 0-1 | Estevez Jacome, Jose Ramon 1984 | A52 Indian Defense: Budapest Gambit Accepted, Main Line, Adler Variation | 1 · mesa 31 |
| 27 feb 2021 | Consuegra Trapiella, Paula | 1-0 | Flores Picon, Juan Pedro 1241 | B00 King's Pawn Game | 1 · mesa 32 |
| 27 feb 2021 | Lorenzo Alvarez, Luis Emilio 1381 | 1-0 | Nuno Mourazos, Isaac | C50 Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | 1 · mesa 33 |
| 27 feb 2021 | Riera Serna, Pau Lai | 0-1 | Garcia Huerta, Enol 1182 | C50 Italian Game: Giuoco Pianissimo | 1 · mesa 34 |
| 27 feb 2021 | Martinez Hurtado, Manuel 1350 | 1-0 | Fernandez Gavrus, Gael | D00 Queen's Pawn Game: Accelerated London System | 1 · mesa 35 |
| 27 feb 2021 | Alonso Fernandez, Gonzalo 1334 | 1-0 | Bueno Roza, Mateo | C45 Scotch Game: Schmidt Variation | 1 · mesa 36 |
| 27 feb 2021 | Morilla Morilla, Candido 1817 | 1-0 | Cipollone Gomes, Victor | D02 Queen's Pawn Game: Chigorin Variation | 1 · mesa 37 |
| 27 feb 2021 | Camacho Barreiro, Iker | 0-1 | Fernandez Garcia, Julio Cesar | B50 Sicilian Defense: Modern Variations | 1 · mesa 38 |
| 27 feb 2021 | Alvarez De Diego, Eden 1144 | 0-1 | Andres Gonzalez, Ivan 2345 | B56 Sicilian Defense: Classical Variation | 1 · mesa 39 |
| 27 feb 2021 | Paton Alvarez, Ivan 1393 | 1-0 | Zapatero Montes, Pablo 1159 | C64 Ruy Lopez: Classical Variation, Central Variation | 1 · mesa 40 |
| 27 feb 2021 | Gorostidi Alvarez, Miguel 1211 | 0-1 | Gonzalez Guedes, Iyan 1966 | B56 Sicilian Defense: Classical Variation | 1 · mesa 41 |
| 27 feb 2021 | Balboa Lopez, Luis 1545 | 1-0 | Garcia Peula, Izan | D06 Queen's Gambit Declined: Marshall Defense | 1 · mesa 42 |
| 27 feb 2021 | Martin Fernandez, Ismael 1109 | 0-1 | Gonzalez Gonzalez, Javier 1365 | B31 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | 1 · mesa 43 |
| 27 feb 2021 | Garcia Cueva, Miguel 1194 | 0-1 | Recuero Guerra, Javier | B45 Sicilian Defense: Four Knights Variation | 1 · mesa 44 |
| 27 feb 2021 | Goellas Gomez, Juan Ramon 1521 | 1-0 | Cividanes Diez, Miguel | A16 English Opening: Anglo-Grünfeld Defense | 1 · mesa 45 |
| 27 feb 2021 | Chakhoyan, Konstantin 2023 | 0-1 | Ordiz Fernandez, Roque | | 1 · mesa 46 |
| 27 feb 2021 | Suarez Alvarez, Miguel 1358 | 1-0 | Arce Cano, Lucas 1239 | A07 King's Indian Attack, with e6 | 1 · mesa 47 |
| 27 feb 2021 | Fernandez Gavrus, Lain | 0-1 | Suarez Montousse, Andres 1791 | B06 Modern Defense | 1 · mesa 48 |
| 27 feb 2021 | Vega Palacio, Jose Francisco 1469 | 1-0 | Cuartas Sanchez, Angel | B71 Sicilian Defense: Dragon Variation, Levenfish Variation | 1 · mesa 49 |
| 27 feb 2021 | Durrer Estrada, Leo | 0-1 | Diaz Hevia, Nicolas 1279 | B21 Sicilian Defense: McDonnell Attack | 1 · mesa 50 |