| 26 may 2020 | -Recuero Guerra, Javier (javirec) | Ver la partida ½-½ | -Perez Nunez, Saul (NakimurAstur) | A13 English Opening: Agincourt Defense | CIUDAD NARANCO A – ENSIDESA | ronda 4 · mesa 1 |
| 26 may 2020 | -Sanchez Vigon, David (Sazed21) | Ver la partida 0-1 | -Llaneza Vega, Marcos (RoseStone18) | A46 Indian Defense: Spielmann-Indian | CIUDAD NARANCO A – ENSIDESA | ronda 4 · mesa 2 |
| 26 may 2020 | -Arguelles Loy, Felix Orlando (Laintermedia) | Ver la partida 1-0 | -Lanza Garcia, Miguel Angel (mianlaga) | A27 English Opening: King's English Variation, Three Knights System | CIUDAD NARANCO A – ENSIDESA | ronda 4 · mesa 3 |
| 26 may 2020 | -Fernandez Gomez, Jordi (Suprem19) | Ver la partida 0-1 | -Baragano Campa, David (Ebwjes) | C02 French Defense: Advance Variation, Lputian Variation | CIUDAD NARANCO A – ENSIDESA | ronda 4 · mesa 4 |
| 26 may 2020 | Baragano Campa, David (Ebwjes) | Ver la partida 1-0 | Fernandez Gomez, Jordi (Suprem19) | B46 Sicilian Defense: Taimanov Variation | CIUDAD NARANCO A – ENSIDESA | ronda 4 · mesa 5 |
| 26 may 2020 | Lanza Garcia, Miguel Angel (mianlaga) | Ver la partida 1-0 | Arguelles Loy, Felix Orlando (Laintermedia) | C41 Philidor Defense: Lion Variation | CIUDAD NARANCO A – ENSIDESA | ronda 4 · mesa 6 |
| 26 may 2020 | Llaneza Vega, Marcos (RoseStone18) | Ver la partida 1-0 | Sanchez Vigon, David (Sazed21) | B23 Sicilian Defense: Closed, Traditional | CIUDAD NARANCO A – ENSIDESA | ronda 4 · mesa 7 |
| 26 may 2020 | Perez Nunez, Saul (NakimurAstur) | Ver la partida 1-0 | Recuero Guerra, Javier (javirec) | C96 Ruy Lopez: Closed, Keres Defense | CIUDAD NARANCO A – ENSIDESA | ronda 4 · mesa 8 |
| 26 may 2020 | -Caso Huerta, Marcos (mcaso) | Ver la partida 0-1 | -Antuna Egocheaga, Rafael Eduardo (rantuna58) | B33 Sicilian Defense: Open | CIUDAD NARANCO B – GRUPO COVADONGA A | ronda 4 · mesa 9 |
| 26 may 2020 | -Marino Bravo, Marco Antonio (mmarino2) | Ver la partida ½-½ | -Rodriguez Suarez, Pablo (lPablin_10) | A00 Van Geet Opening | CIUDAD NARANCO B – GRUPO COVADONGA A | ronda 4 · mesa 10 |
| 26 may 2020 | -Alvarez Gonzalez, Alvaro (Negro_Azabache) | Ver la partida 0-1 | -Del Valle Rosas, Alfonso (DELVALLEOFICIAL) | C42 Petrov's Defense: Classical Attack, Jaenisch Variation | CIUDAD NARANCO B – GRUPO COVADONGA A | ronda 4 · mesa 11 |
| 26 may 2020 | -Perez Guerrero, Jose Esteban (Pepeguerrero64) | Ver la partida 0-1 | -Martinez Rodriguez, Pablo II (Cheposian) | C78 Ruy Lopez: Morphy Defense | CIUDAD NARANCO B – GRUPO COVADONGA A | ronda 4 · mesa 12 |
| 26 may 2020 | Martinez Rodriguez, Pablo II (Cheposian) | Ver la partida 1-0 | Perez Guerrero, Jose Esteban (Pepeguerrero64) | B21 Sicilian Defense: Smith-Morra Gambit Accepted | CIUDAD NARANCO B – GRUPO COVADONGA A | ronda 4 · mesa 13 |
| 26 may 2020 | Del Valle Rosas, Alfonso (DELVALLEOFICIAL) | Ver la partida 1-0 | Alvarez Gonzalez, Alvaro (Negro_Azabache) | A45 Indian Defense: Accelerated London System | CIUDAD NARANCO B – GRUPO COVADONGA A | ronda 4 · mesa 14 |
| 26 may 2020 | Rodriguez Suarez, Pablo (lPablin_10) | Ver la partida 0-1 | Marino Bravo, Marco Antonio (mmarino2) | B90 Sicilian Defense: Najdorf Variation, English Attack | CIUDAD NARANCO B – GRUPO COVADONGA A | ronda 4 · mesa 15 |
| 26 may 2020 | Antuna Egocheaga, Rafael Eduardo (rantuna58) | Ver la partida 1-0 | Caso Huerta, Marcos (mcaso) | B02 Alekhine Defense: Maróczy Variation | CIUDAD NARANCO B – GRUPO COVADONGA A | ronda 4 · mesa 16 |
| 26 may 2020 | Ortiz Fernandez-Vega, Alejandro (Simpa64) | Ver la partida 1-0 | Pena Lopez, Jose Miguel (LeoTheKingCat) | B90 Sicilian Defense: Najdorf Variation, English Attack | GIJON AJEDREZ 64 – GRUPO 64 | ronda 4 · mesa 17 |
| 26 may 2020 | Adeba Rodriguez, Jesus (gijoness) | Ver la partida 0-1 | Iglesias Leon, Francisco J. (FranciscoJavierIgle1) | B00 Pirc Defense | GIJON AJEDREZ 64 – GRUPO 64 | ronda 4 · mesa 18 |
| 26 may 2020 | Chakhoyan, Konstantin (tino73) | Ver la partida 1-0 | Runza Rodriguez, David (drunz97) | E19 Queen's Indian Defense: Classical Variation, Traditional Variation, Main Line | GIJON AJEDREZ 64 – GRUPO 64 | ronda 4 · mesa 19 |
| 26 may 2020 | Alvarez Alvarez, Francisco (esanolavi) | Ver la partida 0-1 | Busto Prendes, Abel (bangievix) | A40 Horwitz Defense | GIJON AJEDREZ 64 – GRUPO 64 | ronda 4 · mesa 20 |
| 26 may 2020 | -Busto Prendes, Abel (bangievix) | Ver la partida 1-0 | -Alvarez Alvarez, Francisco (esanolavi) | B20 Sicilian Defense: Kronberger Variation | GIJON AJEDREZ 64 – GRUPO 64 | ronda 4 · mesa 21 |
| 26 may 2020 | -Runza Rodriguez, David (drunz97) | Ver la partida 1-0 | -Chakhoyan, Konstantin (tino73) | C00 French Defense: King's Indian Attack | GIJON AJEDREZ 64 – GRUPO 64 | ronda 4 · mesa 22 |
| 26 may 2020 | -Iglesias Leon, Francisco J. (FranciscoJavierIgle1) | Ver la partida 1-0 | -Adeba Rodriguez, Jesus (gijoness) | A04 Zukertort Opening: Sicilian Invitation | GIJON AJEDREZ 64 – GRUPO 64 | ronda 4 · mesa 23 |
| 26 may 2020 | -Pena Lopez, Jose Miguel (LeoTheKingCat) | Ver la partida 0-1 | -Ortiz Fernandez-Vega, Alejandro (Simpa64) | E92 King's Indian Defense: Exchange Variation | GIJON AJEDREZ 64 – GRUPO 64 | ronda 4 · mesa 24 |
| 26 may 2020 | -Garcia Garcia, Samuel (Vodkajunior) | Ver la partida 1-0 | -Garcia Fernandez, Jose A. (raskybulgui) | D11 Slav Defense: Modern Line | ANTONIO RICO B – ANTONIO RICO A | ronda 4 · mesa 25 |
| 26 may 2020 | -Arias Torio, Sergio (Torpinson) | Ver la partida 1-0 | -Antuna Pavon, Lucas (Milucas2008) | E40 Nimzo-Indian Defense: Rubinstein System | ANTONIO RICO B – ANTONIO RICO A | ronda 4 · mesa 26 |
| 26 may 2020 | -Garcia Garcia, Aida (aidagarciaa) | Ver la partida 1-0 | -Lopez Naves, Francisco Jose (Fraixixon) | A57 Benko Gambit | ANTONIO RICO B – ANTONIO RICO A | ronda 4 · mesa 27 |
| 26 may 2020 | -Gomez Alvarez, Fco. Fernando (pacobubble) | Ver la partida 1-0 | -Canon Alvarez, Nerea (anastasia_ca) | D00 Queen's Pawn Game: Accelerated London System | ANTONIO RICO B – ANTONIO RICO A | ronda 4 · mesa 28 |
| 26 may 2020 | Canon Alvarez, Nerea (anastasia_ca) | Ver la partida 0-1 | Gomez Alvarez, Fco. Fernando (pacobubble) | D15 Slav Defense: Chebanenko Variation | ANTONIO RICO B – ANTONIO RICO A | ronda 4 · mesa 29 |
| 26 may 2020 | Lopez Naves, Francisco Jose (Fraixixon) | Ver la partida ½-½ | Garcia Garcia, Aida (aidagarciaa) | C54 Italian Game: Classical Variation, Giuoco Pianissimo | ANTONIO RICO B – ANTONIO RICO A | ronda 4 · mesa 30 |
| 26 may 2020 | Antuna Pavon, Lucas (Milucas2008) | Ver la partida 1-0 | Arias Torio, Sergio (Torpinson) | B38 Sicilian Defense: Accelerated Dragon, Maróczy Bind | ANTONIO RICO B – ANTONIO RICO A | ronda 4 · mesa 31 |
| 26 may 2020 | Garcia Fernandez, Jose A. (raskybulgui) | Ver la partida 1-0 | Garcia Garcia, Samuel (Vodkajunior) | C01 French Defense: Exchange Variation | ANTONIO RICO B – ANTONIO RICO A | ronda 4 · mesa 32 |
| 26 may 2020 | Estevez Jacome, Jose Ramon (JREstevez) | Ver la partida ½-½ | Sotelo Luina, Javier (javast1881) | C00 French Defense: Wing Gambit | ALFIL – ESCAQUE 19 | ronda 4 · mesa 33 |
| 26 may 2020 | Cruz Fernandez, Sergio (Sergiocfmachete) | Ver la partida 1-0 | Sagrado Crespo, Alvaro (anubis91) | D35 Queen's Gambit Declined: Exchange Variation, Positional Variation | ALFIL – ESCAQUE 19 | ronda 4 · mesa 34 |
| 26 may 2020 | Gonzalez Ferreras, Jose Antonio (Ernesto7130) | Ver la partida 1-0 | Quindos Gonzalez, Jose Daniel (quindos1) | B00 King's Pawn Game | ALFIL – ESCAQUE 19 | ronda 4 · mesa 35 |
| 26 may 2020 | Carreras Fernandez, Vitor (Asturmad) | Ver la partida 1-0 | Sagrado Crespo, Veronica (Veronica_SC) | D10 Slav Defense: Exchange Variation | ALFIL – ESCAQUE 19 | ronda 4 · mesa 36 |
| 26 may 2020 | -Sagrado Crespo, Veronica (Veronica_SC) | Ver la partida 0-1 | -Carreras Fernandez, Vitor (Asturmad) | B30 Sicilian Defense: Old Sicilian | ALFIL – ESCAQUE 19 | ronda 4 · mesa 37 |
| 26 may 2020 | -Quindos Gonzalez, Jose Daniel (quindos1) | Ver la partida 0-1 | -Gonzalez Ferreras, Jose Antonio (Ernesto7130) | D20 Queen's Gambit Accepted: Central Variation, McDonnell Defense | ALFIL – ESCAQUE 19 | ronda 4 · mesa 38 |
| 26 may 2020 | -Sagrado Crespo, Alvaro (anubis91) | Ver la partida 0-1 | -Cruz Fernandez, Sergio (Sergiocfmachete) | D15 Slav Defense: Chebanenko Variation | ALFIL – ESCAQUE 19 | ronda 4 · mesa 39 |
| 26 may 2020 | -Sotelo Luina, Javier (javast1881) | Ver la partida 0-1 | -Estevez Jacome, Jose Ramon (JREstevez) | D02 Queen's Pawn Game: London System, with e6 | ALFIL – ESCAQUE 19 | ronda 4 · mesa 40 |
| 26 may 2020 | Garcia Suarez, Belarmino (Onimraleb) | Ver la partida 0-1 | Menendez Perez, Miguel (miguelinchess) | D51 Queen's Gambit Declined: Modern Variation, Knight Defense | ANTONIO RICO E – ANTONIO RICO C | ronda 4 · mesa 41 |
| 26 may 2020 | Alvarez De Diego,Eden (miperrosisto) | Ver la partida 1-0 | Cidon Bernardo, Xurde (xurdecidon) | D01 Richter-Veresov Attack | ANTONIO RICO E – ANTONIO RICO C | ronda 4 · mesa 42 |
| 26 may 2020 | Fernandez Gavrus,Lain (lainfg) | Ver la partida 0-1 | Moran Sanchez, David (Rasputin110) | D37 Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense | ANTONIO RICO E – ANTONIO RICO C | ronda 4 · mesa 43 |
| 26 may 2020 | Fernandez Rodriguez, Olaya (Ofr_2007) | Ver la partida ½-½ | Fernandez Gavrus,Gael (GaelFGavrus) | D02 Queen's Pawn Game: Krause Variation | ANTONIO RICO E – ANTONIO RICO C | ronda 4 · mesa 44 |
| 26 may 2020 | -Fernandez Gavrus,Gael (GaelFGavrus) | Ver la partida 0-1 | -Fernandez Rodriguez, Olaya (Ofr_2007) | A22 English Opening: King's English Variation, Two Knights Variation | ANTONIO RICO E – ANTONIO RICO C | ronda 4 · mesa 45 |
| 26 may 2020 | -Moran Sanchez, David (Rasputin110) | Ver la partida 1-0 | -Fernandez Gavrus,Lain (lainfg) | C50 Italian Game: Giuoco Pianissimo, Normal | ANTONIO RICO E – ANTONIO RICO C | ronda 4 · mesa 46 |
| 26 may 2020 | -Cidon Bernardo, Xurde (xurdecidon) | Ver la partida 0-1 | -Alvarez De Diego,Eden (miperrosisto) | C68 Ruy Lopez: Exchange Variation | ANTONIO RICO E – ANTONIO RICO C | ronda 4 · mesa 47 |
| 26 may 2020 | -Menendez Perez, Miguel (miguelinchess) | Ver la partida 1-0 | -Garcia Suarez, Belarmino (Onimraleb) | B72 Sicilian Defense: Dragon Variation, Classical Variation | ANTONIO RICO E – ANTONIO RICO C | ronda 4 · mesa 48 |
| 26 may 2020 | Marynets, Bogdan (Bogdan08062007) | Ver la partida 0-1 | Bernardo Beleno, Erik (Erikgijon) | C51 Italian Game: Evans Gambit, McDonnell Defense | CIUDAD NARANCO D – ANTONIO RICO D | ronda 4 · mesa 49 |
| 26 may 2020 | Consuegra Trapiella, Paula (Paula686) | Ver la partida 0-1 | Bueno Roza, Mateo (mbr2805) | B50 Sicilian Defense: Modern Variations | CIUDAD NARANCO D – ANTONIO RICO D | ronda 4 · mesa 50 |