| 24 feb 2021 | Sierra Vallina, Lionel (Zenosama8) | Ver la partida 1-0 | -Gonzalez Gonzalez, Javier (Jgg2010) | A20 English Opening: King's English Variation | Ensidesa A – Vetusta C | ronda 3 · mesa 2 |
| 24 feb 2021 | Pedreira Garcia, Nicolas (Nikedex) | Ver la partida 1-0 | -Suarez Montousse, Andres (andresmonto | D37 Queen's Gambit Declined: Three Knights Variation | | ronda 3 · mesa 2 |
| 24 feb 2021 | Lanza Garcia, Miguel Angel (mianl | Ver la partida 1-0 | -Varela Cano, Hugo (HugoChess_33) | B22 Sicilian Defense: Alapin Variation | | ronda 3 · mesa 2 |
| 24 feb 2021 | Fernandez Calvo, Martin (martin32fde | Ver la partida 0-1 | -Martinez Lopez, Eduardo (Emlz) | E17 Queen's Indian Defense: Anti-Queen's Indian System | | ronda 3 · mesa 2 |
| 24 feb 2021 | Garcia Fernandez, Jose Antonio (janga | Ver la partida 1-0 | -Fernandez Artime, Jorge (Jorgefa7) | A40 Englund Gambit Declined: Reversed French | | ronda 3 · mesa 2 |
| 24 feb 2021 | Candanedo Moral, Enrique (E_CanMora) | Ver la partida 0-1 | -Antuna Pavon, Lucas (milucas2008) | B40 Sicilian Defense: French Variation | Universidad de Oviedo B – Antonio Rico A | ronda 3 · mesa 2 |
| 24 feb 2021 | Fernandez Ojanguren, Pelayo (Pfo04) | Ver la partida 0-1 | -Copena Rodriguez, Damian (Revirado) | B33 Sicilian Defense: Lasker-Pelikan Variation | Ciudad Naranco B – Universidad de Oviedo A | ronda 3 · mesa 2 |
| 24 feb 2021 | Alvarez Cigarria, Alfredo (Ugarte60) | Ver la partida 1-0 | -Martinez Ramos, Paula (caissa06) | E11 Bogo-Indian Defense: Retreat Variation | Ciudad Naranco B – Universidad de Oviedo A | ronda 3 · mesa 2 |
| 24 feb 2021 | Poblet Bulnes, Sara (sarapbov43) | Ver la partida 1-0 | -Alvarez Fernandez, Jose Manuel (fdezal | C50 Italian Game: Giuoco Pianissimo | | ronda 3 · mesa 2 |
| 24 feb 2021 | Bazan Solera, Manuel (bazan55) | Ver la partida 1-0 | -Caunedo Alvarez, Miguel (MikhailKhau | D02 Queen's Pawn Game: Chigorin Variation | | ronda 3 · mesa 2 |
| 24 feb 2021 | Lopez Sanchez, Ivan (ivanlosa) | Ver la partida 0-1 | -Gutierrez Garcia, Marcos (Marcosguti7 | D37 Queen's Gambit Declined: Harrwitz Attack | | ronda 3 · mesa 2 |
| 24 feb 2021 | Mulet Durango, Carolina (CarolinaM | Ver la partida ½-½ | -Fernandez Garcia, Julio Cesar (jcfg19 | D05 Queen's Pawn Game: Colle System | | ronda 3 · mesa 2 |
| 24 feb 2021 | Fernandez Fernandez, Marcos (marcosff006 | Ver la partida 1-0 | -Vega Garcia, Alejandro (jandro_0 | C50 Italian Game: Giuoco Piano | | ronda 3 · mesa 2 |
| 24 feb 2021 | Muniz Otero, Lucas (CANTERA1) | Ver la partida 0-1 | -Suarez Prendes, Rufino (pezapo) | B02 Alekhine Defense: Scandinavian Variation | Vetusta D – Valdesva | ronda 3 · mesa 2 |
| 24 feb 2021 | Menendez Perez, Miguel (miguelinche | Ver la partida 1-0 | -Arce Cano, Lucas (lac10000) | C42 Petrov's Defense: Classical Attack | | ronda 3 · mesa 2 |
| 24 feb 2021 | Bueno Roza, Mateo (mbr2805) | Ver la partida 1-0 | -Alvarez De Diego, Eden (miperrosisto) | C50 Italian Game: Giuoco Pianissimo, Canal Variation | Ciudad Naranco C – Antonio Rico B | ronda 3 · mesa 2 |
| 24 feb 2021 | Arribas Castro, Mauro (Mauro_Gijon) | Ver la partida 0-1 | -Maire Garcia, Xabiel (Xanielin) | C51 Italian Game: Evans Gambit, McDonnell Defense | Ciudad Naranco C – Antonio Rico B | ronda 3 · mesa 2 |
| 24 feb 2021 | Lopez Fernandez, Marcos (MarcosLfdz) | Ver la partida 1-0 | -Camacho Barreiro, Iker (Capanegra2222 | C54 Italian Game: Classical Variation, Giuoco Pianissimo | | ronda 3 · mesa 2 |
| 24 feb 2021 | Zapatero Montes, Pablo (madridista29 | Ver la partida 1-0 | -Fernandez Trancon, David (David_Tranco | A85 Dutch Defense: Queen's Knight Variation | | ronda 3 · mesa 2 |
| 24 feb 2021 | Consuegra Trapiella, Paula (Paula686) | Ver la partida 0-1 | -Gonzalez Martino, Rodrigo (Rodrigmart | C50 Italian Game: Giuoco Pianissimo, Canal Variation | | ronda 3 · mesa 2 |
| 24 feb 2021 | Durrer Estrada, Leo (Leotron98) | Ver la partida 0-1 | -Martinez Hurtado, Manuel (Chiquielrey | C26 Vienna Game: Falkbeer Variation | | ronda 3 · mesa 2 |
| 24 feb 2021 | Villahoz Rodriguez, Carlos (Carcode) | Ver la partida 0-1 | -Gonzalez Fernandez, Alvaro (alvaro11213 | A04 Zukertort Opening: Dutch Variation | | ronda 3 · mesa 2 |
| 24 feb 2021 | Joglar Garcia, Maria (Mariia013) | Ver la partida 1-0 | -Mayoral Fernandez, Alberto (AlbertoMay | D02 Queen's Pawn Game: London System | | ronda 3 · mesa 2 |
| 24 feb 2021 | Garcia Peula, Aimar (aigape) | Ver la partida 0-1 | -Gorostidi Alvarez, Miguel (Tolia03) | D01 Rapport-Jobava System | Peon Escarlata – Grupo 64 | ronda 3 · mesa 2 |
| 3 mar 2021 | Sanchez Vigon, David (Sazed21) | Ver la partida 0-1 | -Dommaraju, Gukesh (GukeshDomma | B13 Caro-Kann Defense: Exchange Variation | | ronda 4 · mesa 1 |
| 3 mar 2021 | Dommaraju, Gukesh (GukeshDomma | Ver la partida 1-0 | -Sanchez Vigon, David (Sazed21) | D02 Queen's Pawn Game: London System | | ronda 4 · mesa 2 |
| 3 mar 2021 | Hellinga Damstra, Martien (asturfriso | Ver la partida 0-1 | -Cascudo Pueyo, Ignacio (icasc) | C06 French Defense: Tarrasch Variation, Closed Variation, Main Line | | ronda 4 · mesa 3 |
| 3 mar 2021 | Cascudo Pueyo, Ignacio (icasc) | Ver la partida 1-0 | -Hellinga Damstra, Martien (asturfriso | B47 Sicilian Defense: Taimanov Variation, Bastrikov Variation | | ronda 4 · mesa 4 |
| 3 mar 2021 | Copena Rodriguez, Damian (Revirado) | Ver la partida 1-0 | -Alonso Alvarez, Aitor (SmaugFire) | B20 Sicilian Defense | Universidad de Oviedo A – Vetusta A | ronda 4 · mesa 5 |
| 3 mar 2021 | Alonso Alvarez, Aitor (SmaugFire) | Ver la partida 0-1 | -Copena Rodriguez, Damian (Revirado) | D02 Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | Universidad de Oviedo A – Vetusta A | ronda 4 · mesa 6 |
| 3 mar 2021 | Martinez Lopez, Eduardo (Emlz) | Ver la partida 1-0 | -Gonzalez Gonzalez, Javier (Jgg2010) | B38 Sicilian Defense: Accelerated Dragon, Maróczy Bind | Antonio Rico A – Vetusta C | ronda 4 · mesa 7 |
| 3 mar 2021 | Gonzalez Gonzalez, Javier (Jgg2010) | Ver la partida 1-0 | -Martinez Lopez, Eduardo (Emlz) | E05 Catalan Opening: Open Defense, Classical Line | Antonio Rico A – Vetusta C | ronda 4 · mesa 8 |
| 3 mar 2021 | Adanez Navarro, Xabier (Xabi1) | Ver la partida 0-1 | -Blazquez Lopez, Berna (JAVIERAGUERA | B18 Caro-Kann Defense: Classical Variation | | ronda 4 · mesa 9 |
| 3 mar 2021 | Blazquez Lopez, Berna (JAVIERAGUERA | Ver la partida 1-0 | -Adanez Navarro, Xabier (Xabi1) | D53 Queen's Gambit Declined | | ronda 4 · mesa 10 |
| 3 mar 2021 | Fernandez Perez, Samuel (DNC1314) | Ver la partida 1-0 | -Junquera Guerrero, David (Davidjg4029) | B50 Sicilian Defense: Modern Variations | Universidad de Oviedo B – Grupo 64 | ronda 4 · mesa 11 |
| 3 mar 2021 | Junquera Guerrero, David (Davidjg4029) | Ver la partida 0-1 | -Fernandez Perez, Samuel (DNC1314) | C50 Italian Game | Universidad de Oviedo B – Grupo 64 | ronda 4 · mesa 12 |
| 3 mar 2021 | Mulet Durango, Carolina (CarolinaM | Ver la partida 0-1 | -Diaz Hevia, Nicolas (nico_dh) | A46 Indian Defense: Spielmann-Indian | | ronda 4 · mesa 13 |
| 3 mar 2021 | Diaz Hevia, Nicolas (nico_dh) | Ver la partida 1-0 | -Mulet Durango, Carolina (CarolinaM | A36 English Opening: Symmetrical Variation, Two Knights, Fianchetto Variation | | ronda 4 · mesa 14 |
| 3 mar 2021 | Alvarez De Diego, Eden (miperrosisto) | Ver la partida 1-0 | -Lopez Fernandez, Marcos (MarcosLfdz) | C54 Italian Game: Classical Variation, Giuoco Pianissimo | Antonio Rico B – Antonio Rico C | ronda 4 · mesa 15 |
| 3 mar 2021 | Lopez Fernandez, Marcos (MarcosLfdz) | Ver la partida 1-0 | -Alvarez De Diego, Eden (miperrosisto) | C54 Italian Game: Classical Variation, Giuoco Pianissimo | Antonio Rico B – Antonio Rico C | ronda 4 · mesa 16 |
| 3 mar 2021 | Lorenzo Alvarez, Luis Emilio (luisel | Ver la partida 1-0 | -Torio Solis, Adrian (Adrian-Ts) | C50 Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | | ronda 4 · mesa 17 |
| 3 mar 2021 | Torio Solis, Adrian (Adrian-Ts) | Ver la partida 0-1 | -Lorenzo Alvarez, Luis Emilio (luisel | C01 French Defense: Exchange Variation | | ronda 4 · mesa 18 |
| 3 mar 2021 | Badillo Ramos, Steve (miguelanguel | Ver la partida 0-1 | -Antuna Egocheaga, Rafael Eduardo (raf | B31 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | | ronda 4 · mesa 19 |
| 3 mar 2021 | Antuna Egocheaga, Rafael Eduardo (raf | Ver la partida 1-0 | -Badillo Ramos, Steve (miguelanguel | C02 French Defense: Advance Variation, Nimzowitsch Gambit | | ronda 4 · mesa 20 |
| 3 mar 2021 | Centron Antuna, Daniel (Dacean99) | Ver la partida ½-½ | -Alonso Fernandez, Gonzalo (GenioAlfa) | D02 Queen's Pawn Game: London System | Grupo Covadonga – Vetusta B | ronda 4 · mesa 21 |
| 3 mar 2021 | Alonso Fernandez, Gonzalo (GenioAlfa) | Ver la partida ½-½ | -Centron Antuna, Daniel (Dacean99) | B32 Sicilian Defense: Löwenthal Variation | Grupo Covadonga – Vetusta B | ronda 4 · mesa 22 |
| 3 mar 2021 | Alvarez Fernandez, Enrique (kinkaiser) | Ver la partida 1-0 | -Sierra Vallina, Lionel (Zenosama8) | A80 Dutch Defense | Gijon 64 – Ensidesa A | ronda 4 · mesa 23 |
| 3 mar 2021 | Sierra Vallina, Lionel (Zenosama8) | Ver la partida 0-1 | -Alvarez Fernandez, Enrique (kinkaiser) | A20 English Opening: King's English Variation | Gijon 64 – Ensidesa A | ronda 4 · mesa 24 |
| 3 mar 2021 | Fernandez Fernandez, Marcos (marcosff006 | Ver la partida 1-0 | -Alvarez Gonzalez, Alvaro (Negro_Azaba | C50 Italian Game: Giuoco Piano | | ronda 4 · mesa 25 |
| 3 mar 2021 | Alvarez Gonzalez, Alvaro (Negro_Azaba | Ver la partida 1-0 | -Fernandez Fernandez, Marcos (marcosff006 | C51 Italian Game: Evans Gambit, Anderssen Variation | | ronda 4 · mesa 26 |