| 9 sept 2021 | Diaz Hernandez, Heriberto 2340 | 0-1 | Padilla Lozano, Francisco Manuel 1793 | | 1 · mesa 1 |
| 9 sept 2021 | Gomez Arce, Alejandro 1720 | 1-0 | Silva, David 2312 | A40 Queen's Pawn Game | 1 · mesa 2 |
| 9 sept 2021 | Gavilan Diaz, Mario 2278 | 1-0 | Conde Chamizo, Pablo 1669 | A10 English Opening | 1 · mesa 3 |
| 9 sept 2021 | Pena Rodriguez, Victor 1652 | 0-1 | Perea Fruet, Lorenzo 2212 | B23 Sicilian Defense: Closed | 1 · mesa 4 |
| 9 sept 2021 | Munoz Moreno, Francisco Javier 2193 | ½-½ | Munoz Romero, Pedro 1644 | E62 King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | 1 · mesa 5 |
| 9 sept 2021 | Sanchez Munoz, Jesus 1632 | 0-1 | Serrano Almendros, Alejandro 2166 | | 1 · mesa 6 |
| 9 sept 2021 | Boado Rodriguez, Martin 2165 | 1-0 | Millan Ortiz, Francisco Pablo 1626 | C00 French Defense: Réti-Spielmann Attack | 1 · mesa 7 |
| 9 sept 2021 | Millan Parraga, Alejandro 1596 | 0-1 | Aguado Doncel, Pablo Luis 2108 | B22 Sicilian Defense: Alapin Variation, Smith-Morra Declined | 1 · mesa 8 |
| 9 sept 2021 | Jurado Vazquez, Javier 2107 | 1-0 | Guardia Bencomo, Tomas 1587 | C41 Philidor Defense: Lion Variation | 1 · mesa 9 |
| 9 sept 2021 | Pena Rodriguez, Alvaro 1582 | 0-1 | Maldonado Mena, German 2081 | B59 Sicilian Defense: Boleslavsky Variation | 1 · mesa 10 |
| 9 sept 2021 | Jaime Montalvan, Luis Felipe 2047 | 1-0 | Cesar Maestre, Eduardo 1565 | A17 English Opening: Anglo-Indian Defense, Hedgehog System | 1 · mesa 11 |
| 9 sept 2021 | Buettgenbach, Uwe Eugen 1560 | 1-0 | Buijs Martin, Urtzi 2020 | B21 Sicilian Defense: McDonnell Attack, Toilet Variation | 1 · mesa 12 |
| 9 sept 2021 | Llena Velarde, David 1989 | 1-0 | Gaspar Lopez, Rocio 1559 | B32 Sicilian Defense: Kalashnikov Variation | 1 · mesa 13 |
| 9 sept 2021 | Herrero Pena, Laura 1304 | * | bye | | 1 · mesa 14 |
| 10 sept 2021 | Gavilan Diaz, Mario 2278 | 0-1 | Montesinos Diaz, Luis 1935 | A27 English Opening: King's English Variation, Three Knights System | 2 · mesa 1 |
| 10 sept 2021 | Perea Fruet, Lorenzo 2212 | 0-1 | Gonzalez Capacete, Jose Miguel 1899 | B35 Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | 2 · mesa 2 |
| 10 sept 2021 | Marquez Bernal, Florencio 1911 | 0-1 | Serrano Almendros, Alejandro 2166 | E10 Blumenfeld Countergambit | 2 · mesa 3 |
| 10 sept 2021 | Garcia Fernandez, Victor 1874 | 1-0 | Boado Rodriguez, Martin 2165 | E35 Nimzo-Indian Defense: Classical Variation, Noa Variation | 2 · mesa 4 |
| 10 sept 2021 | Aguado Doncel, Pablo Luis 2108 | 1-0 | Juan Lepp, Jaime Boris 1880 | A21 English Opening: King's English Variation, Reversed Sicilian | 2 · mesa 5 |
| 10 sept 2021 | Garzon Rodriguez, Jose Manuel 1832 | 0-1 | Jurado Vazquez, Javier 2107 | A49 Indian Defense: Przepiorka Variation | 2 · mesa 6 |
| 10 sept 2021 | Maldonado Mena, German 2081 | 0-1 | Gonzalez Castillo, Jose Javier 1807 | E32 Nimzo-Indian Defense: Classical Variation | 2 · mesa 7 |
| 10 sept 2021 | Padilla Lozano, Francisco Manuel 1793 | ½-½ | Llena Velarde, David 1989 | D00 Queen's Pawn Game: Accelerated London System | 2 · mesa 8 |
| 10 sept 2021 | Gomez Arce, Alejandro 1720 | ½-½ | Gomez Aguirre, Juan Alberto 1988 | D33 Tarrasch Defense: Dubov Tarrasch | 2 · mesa 9 |
| 10 sept 2021 | Perez Guerra, Alberto 1967 | 1-0 | Macias Aguilar, Antonio Jesus 1528 | A15 English Opening: Anglo-Indian Defense | 2 · mesa 10 |
| 10 sept 2021 | Garrido Diaz, Ernesto 1956 | 1-0 | Escarcena Mercado, Angel 1090 | C29 Vienna Game: Vienna Gambit | 2 · mesa 11 |
| 10 sept 2021 | Munoz Jorva, Miguel Angel 1738 | 1-0 | Cappelle, Cedric 1398 | D18 Slav Defense: Czech Variation, Classical System | 2 · mesa 12 |
| 10 sept 2021 | Gomez Salva, Roberto 1558 | 0-1 | Munoz Moreno, Francisco Javier 2193 | B23 Sicilian Defense: Closed | 2 · mesa 13 |
| 10 sept 2021 | Colloridi, Dominic 1519 | 1-0 | Molina Souponitskaia, Alexander 1603 | A38 English Opening: Symmetrical Variation, Full Symmetry Line | 2 · mesa 14 |
| 10 sept 2021 | Ojeda Lago, Ariadna 1978 | * | bye | | 2 · mesa 15 |
| 10 sept 2021 | Serrano Almendros, Alejandro 2166 | ½-½ | Garrido Diaz, Ernesto 1956 | A00 Anderssen's Opening | 3 · mesa 1 |
| 10 sept 2021 | Montesinos Diaz, Luis 1935 | ½-½ | Aguado Doncel, Pablo Luis 2108 | D05 Queen's Pawn Game: Colle System | 3 · mesa 2 |
| 10 sept 2021 | Jurado Vazquez, Javier 2107 | 0-1 | Garcia Fernandez, Victor 1874 | B31 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | 3 · mesa 3 |
| 10 sept 2021 | Gonzalez Capacete, Jose Miguel 1899 | 0-1 | Perez Guerra, Alberto 1967 | A07 King's Indian Attack | 3 · mesa 4 |
| 10 sept 2021 | Gonzalez Castillo, Jose Javier 1807 | 0-1 | Jaime Montalvan, Luis Felipe 2047 | B21 Sicilian Defense: Smith-Morra Gambit Accepted | 3 · mesa 5 |
| 10 sept 2021 | Munoz Moreno, Francisco Javier 2193 | 1-0 | Padilla Lozano, Francisco Manuel 1793 | E09 Catalan Opening: Closed, Main Line | 3 · mesa 6 |
| 10 sept 2021 | Llena Velarde, David 1989 | 1-0 | Munoz Jorva, Miguel Angel 1738 | B01 Scandinavian Defense: Valencian Variation | 3 · mesa 7 |
| 10 sept 2021 | Gomez Aguirre, Juan Alberto 1988 | ½-½ | Buettgenbach, Uwe Eugen 1560 | A51 Indian Defense: Budapest Gambit Accepted, Fajarowicz Defense | 3 · mesa 8 |
| 10 sept 2021 | Zurita Gutierrez, Antonio 1956 | 0-1 | Gomez Arce, Alejandro 1720 | D79 Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | 3 · mesa 9 |
| 10 sept 2021 | Colloridi, Dominic 1519 | 0-1 | Gavilan Diaz, Mario 2278 | A13 English Opening: Agincourt Defense | 3 · mesa 10 |
| 10 sept 2021 | Millan Parraga, Alejandro 1596 | 0-1 | Perea Fruet, Lorenzo 2212 | B22 Sicilian Defense: Alapin Variation, Smith-Morra Declined | 3 · mesa 11 |
| 10 sept 2021 | Boado Rodriguez, Martin 2165 | 1-0 | Sanchez Munoz, Jesus 1632 | B20 Sicilian Defense: Lasker-Dunne Attack | 3 · mesa 12 |
| 10 sept 2021 | Macias Aguilar, Antonio Jesus 1528 | 0-1 | Maldonado Mena, German 2081 | B30 Sicilian Defense: Old Sicilian | 3 · mesa 13 |
| 10 sept 2021 | Cappelle, Cedric 1398 | 1-0 | Buijs Martin, Urtzi 2020 | A49 Indian Defense: Przepiorka Variation | 3 · mesa 14 |
| 10 sept 2021 | Herrero Pena, Laura 1304 | 0-1 | Marquez Bernal, Florencio 1911 | A46 Yusupov-Rubinstein System | 3 · mesa 15 |
| 10 sept 2021 | Ojeda Lago, Ariadna 1978 | * | bye | | 3 · mesa 16 |
| 11 sept 2021 | Perez Guerra, Alberto 1967 | ½-½ | Garcia Fernandez, Victor 1874 | A06 Nimzo-Larsen Attack: Classical Variation | 4 · mesa 1 |
| 11 sept 2021 | Garrido Diaz, Ernesto 1956 | 0-1 | Munoz Moreno, Francisco Javier 2193 | B41 Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | 4 · mesa 2 |
| 11 sept 2021 | Gomez Arce, Alejandro 1720 | 0-1 | Serrano Almendros, Alejandro 2166 | D35 Queen's Gambit Declined: Exchange Variation, Positional Variation | 4 · mesa 3 |
| 11 sept 2021 | Aguado Doncel, Pablo Luis 2108 | 1-0 | Llena Velarde, David 1989 | D31 Queen's Gambit Declined: Charousek Variation | 4 · mesa 4 |
| 11 sept 2021 | Jaime Montalvan, Luis Felipe 2047 | ½-½ | Montesinos Diaz, Luis 1935 | A05 King's Indian Attack | 4 · mesa 5 |