| 13 may 2018 | Rodenas Riesco, Alfonso 1495 | Ver la partida ½-½ | BYE | | ronda 4 · mesa 20 |
| 13 may 2018 | Barbas, Fernando 1490 | Ver la partida ½-½ | BYE | | ronda 4 · mesa 21 |
| 13 may 2018 | Gomez Escurin, Jose Manuel 1345 | Ver la partida ½-½ | BYE | | ronda 4 · mesa 22 |
| 13 may 2018 | Collantes Ruiz, Paula | Ver la partida ½-½ | BYE | | ronda 4 · mesa 23 |
| 13 may 2018 | Sanchez Pina, Damian | Ver la partida ½-½ | BYE | | ronda 4 · mesa 24 |
| 13 may 2018 | Diez Cuarental, Luis 1231 | Ver la partida ½-½ | BYE | | ronda 4 · mesa 25 |
| 13 may 2018 | Bermudez Valles, Juan Alejandro 1345 | Ver la partida ½-½ | BYE | | ronda 4 · mesa 26 |
| 13 may 2018 | Sanchez Marquez, Diego 1150 | Ver la partida ½-½ | BYE | | ronda 4 · mesa 27 |
| 20 may 2018 | Lozano Suarez, Luis Miguel 2142 | Ver la partida 1-0 | Rodriguez Garcia, Alberto 1770 | B20 Sicilian Defense: Czerniak Attack | ronda 5 · mesa 1 |
| 20 may 2018 | Campos Calvo-Sotelo, Javier 2024 | Ver la partida 1-0 | Sanz Uson, Manuel 2070 | A88 Dutch Defense: Leningrad Variation, Warsaw Variation | ronda 5 · mesa 2 |
| 20 may 2018 | Coca Gradin, Jesus 1589 | Ver la partida 0-1 | Perez Alvarez, Javier 1843 | A03 Bird Opening: Dutch Variation | ronda 5 · mesa 3 |
| 20 may 2018 | Bellod Thomas, Gonzalo 1645 | Ver la partida 0-1 | Martinez Alvarez, Manuel J. 1709 | D94 Grünfeld Defense: Three Knights Variation, Burille Variation | ronda 5 · mesa 4 |
| 20 may 2018 | Collantes Ruiz, Adrian | Ver la partida 0-1 | Deben Gayo, Javier 1643 | B40 Sicilian Defense: Pin Variation | ronda 5 · mesa 5 |
| 20 may 2018 | Collantes Suarez, Ramon 1543 | Ver la partida ½-½ | Medina Balenciaga, Patricio 1412 | C41 Philidor Defense | ronda 5 · mesa 6 |
| 20 may 2018 | Del Castillo Izquierdo, Jose | Ver la partida 1-0 | Fernandez Diaz, Ricardo 1522 | E41 Nimzo-Indian Defense: Rubinstein System | ronda 5 · mesa 7 |
| 20 may 2018 | Rodenas Riesco, Alfonso 1495 | Ver la partida 1-0 | Luque Sanz, Victor | D02 Queen's Pawn Game: Chigorin Variation | ronda 5 · mesa 8 |
| 20 may 2018 | Martinez-Paul Exposito, Ignacio Jesus | Ver la partida 0-1 | Barbas, Fernando 1490 | C65 Ruy Lopez: Berlin Defense | ronda 5 · mesa 9 |
| 20 may 2018 | Olias Rincon, Raul 1330 | Ver la partida 0-1 | Alfaya Martinez, Enrique 1582 | B70 Sicilian Defense: Dragon Variation | ronda 5 · mesa 10 |
| 20 may 2018 | Lozano Hernanz, Rodrigo 1194 | Ver la partida 1-0 | Sanchez Ortega, Ruben 1572 | | ronda 5 · mesa 11 |
| 20 may 2018 | Criado Jimenez, Jose 1567 | Ver la partida 1-0 | Sanchez Pina, Damian | C03 French Defense: Tarrasch Variation, Guimard Defense | ronda 5 · mesa 12 |
| 20 may 2018 | Collantes Ruiz, Paula | Ver la partida 0-1 | Gomez Escurin, Jose Manuel 1345 | C00 French Defense: Knight Variation | ronda 5 · mesa 13 |
| 20 may 2018 | Salomone Merello, Stelvio 1392 | Ver la partida 1-0 | Pinto Santamaria, Oscar 1537 | C45 Scotch Game: Classical Variation | ronda 5 · mesa 14 |
| 20 may 2018 | Diez Cuarental, Luis 1231 | Ver la partida 1-0 | Garcia-Rayo Escalada, Marcos | C54 Italian Game: Classical Variation, Greco Gambit, Traditional Line | ronda 5 · mesa 15 |
| 20 may 2018 | Diaz Guzman, David | Ver la partida ½-½ | Bujosa Del Rio, Diego 1175 | C57 Italian Game: Two Knights Defense, Ulvestad Variation | ronda 5 · mesa 16 |
| 20 may 2018 | Bermudez Valles, Juan Alejandro 1345 | Ver la partida 0-1 | Martinez-Paul Exposito, Santiago Javier | | ronda 5 · mesa 17 |
| 20 may 2018 | Paarup Pelaez, David | Ver la partida 1-0 | Garcia Estebanez, Diego 1171 | A00 Hungarian Opening | ronda 5 · mesa 18 |
| 20 may 2018 | Sanchez Villodres, Mario | Ver la partida 0-1 | Martinez Zurita, Enrique | C55 Italian Game: Two Knights Defense | ronda 5 · mesa 19 |
| 20 may 2018 | Olias Rincon, Diego | Ver la partida 1-0 | Solanilla Olcese, Ada | C54 Italian Game: Classical Variation, Greco Gambit, Traditional Line | ronda 5 · mesa 20 |
| 20 may 2018 | Sanchez Marquez, Diego 1150 | Ver la partida 1-0 | Garcia-Rayo Escalada, Guillermo | C34 King's Gambit Accepted: MacLeod Defense | ronda 5 · mesa 21 |
| 20 may 2018 | El Khoury Favilla de Paula, Michel 1469 | Ver la partida 0-1 | BYE | | ronda 5 · mesa 22 |
| 20 may 2018 | Solanilla Olcese, Alejandro | Ver la partida 0-1 | BYE | | ronda 5 · mesa 23 |
| 27 may 2018 | Perez Alvarez, Javier 1843 | Ver la partida 0-1 | Lozano Suarez, Luis Miguel 2142 | C45 Scotch Game: Malaniuk Variation | ronda 6 · mesa 1 |
| 27 may 2018 | Martinez Alvarez, Manuel J. 1709 | Ver la partida 0-1 | Campos Calvo-Sotelo, Javier 2024 | B50 Sicilian Defense: Modern Variations | ronda 6 · mesa 2 |
| 27 may 2018 | Sanz Uson, Manuel 2070 | Ver la partida 1-0 | Rodenas Riesco, Alfonso 1495 | B28 Sicilian Defense: O'Kelly Variation, Venice System | ronda 6 · mesa 3 |
| 27 may 2018 | Rodriguez Garcia, Alberto 1770 | Ver la partida 1-0 | Barbas, Fernando 1490 | D08 Queen's Gambit Declined: Albin Countergambit, Normal Line | ronda 6 · mesa 4 |
| 27 may 2018 | Deben Gayo, Javier 1643 | Ver la partida 1-0 | Del Castillo Izquierdo, Jose | A45 Indian Defense: Accelerated London System | ronda 6 · mesa 5 |
| 27 may 2018 | Medina Balenciaga, Patricio 1412 | Ver la partida 0-1 | Coca Gradin, Jesus 1589 | C68 Ruy Lopez: Exchange Variation | ronda 6 · mesa 6 |
| 27 may 2018 | Alfaya Martinez, Enrique 1582 | Ver la partida 1-0 | Salomone Merello, Stelvio 1392 | A40 Horwitz Defense | ronda 6 · mesa 7 |
| 27 may 2018 | Lozano Hernanz, Rodrigo 1194 | Ver la partida 0-1 | Criado Jimenez, Jose 1567 | B13 Caro-Kann Defense: Exchange Variation | ronda 6 · mesa 8 |
| 27 may 2018 | Collantes Suarez, Ramon 1543 | Ver la partida 1-0 | Gomez Escurin, Jose Manuel 1345 | | ronda 6 · mesa 9 |
| 27 may 2018 | Luque Sanz, Victor | Ver la partida 0-1 | Bellod Thomas, Gonzalo 1645 | C00 French Defense: King's Indian Attack | ronda 6 · mesa 10 |
| 27 may 2018 | Fernandez Diaz, Ricardo 1522 | Ver la partida 1-0 | Martinez-Paul Exposito, Santiago Javier | D06 Queen's Gambit Declined: Marshall Defense | ronda 6 · mesa 11 |
| 27 may 2018 | Martinez-Paul Exposito, Ignacio Jesus | Ver la partida 1-0 | Diez Cuarental, Luis 1231 | C68 Ruy Lopez: Exchange Variation | ronda 6 · mesa 12 |
| 27 may 2018 | Collantes Ruiz, Adrian | Ver la partida 0-1 | Olias Rincon, Raul 1330 | C45 Scotch Game | ronda 6 · mesa 13 |
| 27 may 2018 | Bujosa Del Rio, Diego 1175 | Ver la partida 0-1 | Olias Rincon, Diego | C50 Italian Game: Giuoco Pianissimo | ronda 6 · mesa 14 |
| 27 may 2018 | Martinez Zurita, Enrique | Ver la partida 1-0 | Collantes Ruiz, Paula | C78 Ruy Lopez: Morphy Defense, Møller Variation | ronda 6 · mesa 15 |
| 27 may 2018 | Sanchez Pina, Damian | Ver la partida 0-1 | Diaz Guzman, David | C44 Scotch Game | ronda 6 · mesa 16 |
| 27 may 2018 | Garcia-Rayo Escalada, Marcos | Ver la partida 0-1 | Paarup Pelaez, David | B00 Nimzowitsch Defense: Franco-Nimzowitsch Variation | ronda 6 · mesa 17 |
| 27 may 2018 | Pinto Santamaria, Oscar 1537 | Ver la partida 0-1 | Sanchez Marquez, Diego 1150 | | ronda 6 · mesa 18 |
| 27 may 2018 | Solanilla Olcese, Alejandro | Ver la partida 1-0 | Sanchez Villodres, Mario | C60 Ruy Lopez | ronda 6 · mesa 19 |