| 21 jun 2018 | Stella, Andrea 2500 | 1-0 | Fernandez Garcia, Ignacio 1780 | A40 Polish Defense: Spassky Gambit Accepted | 1 · mesa 1 |
| 21 jun 2018 | Martin-Consuegra Barrilero, Javi 1777 | 0-1 | Gascon Del Nogal, Jose Rafael 2470 | A45 Indian Defense: Accelerated London System | 1 · mesa 2 |
| 21 jun 2018 | Valles Moreno, Ivan 2424 | 1-0 | Sancho Castiello, Federico 1776 | B46 Sicilian Defense: Taimanov Variation | 1 · mesa 3 |
| 21 jun 2018 | Estevez Sacristan, Deva 1773 | 0-1 | Garrido Dominguez, Jesus 2402 | C41 Philidor Defense: Lion Variation | 1 · mesa 4 |
| 21 jun 2018 | Martin Duque, Jesus 2377 | 1-0 | Perez Cameselle, Francisco 1764 | C02 French Defense: Advance Variation, Main Line | 1 · mesa 5 |
| 21 jun 2018 | Rodriguez Bernal, Herman 1743 | ½-½ | Hernando Pertierra, Jose C. 2360 | A40 Queen's Pawn Game: Modern Defense | 1 · mesa 6 |
| 21 jun 2018 | Roa Alonso, Santiago 2355 | 1-0 | Fernandez Rios, Jose Francisco 1741 | B27 Sicilian Defense: Hyperaccelerated Dragon | 1 · mesa 7 |
| 21 jun 2018 | Tevar Sanz, Gonzalo 1701 | 1-0 | Renteria, Jorge 2283 | A43 Benoni Defense: Old Benoni | 1 · mesa 8 |
| 21 jun 2018 | Sanchez Gonzalez, Sergio 2270 | 1-0 | Fernandez Salamanca, Gonzalo 1683 | A07 King's Indian Attack, with e6 | 1 · mesa 9 |
| 21 jun 2018 | Gonzalez Marquez, Jorge 1676 | 0-1 | Perez Gonzalez, Jose Manuel 2245 | | 1 · mesa 10 |
| 21 jun 2018 | Iagar, Razvan-Gabriel 2216 | 1-0 | Ochoa Gonzalez, Hugo 1663 | E62 King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | 1 · mesa 11 |
| 21 jun 2018 | De Dompablo Fantova, Juan 1659 | 0-1 | Martinez Fernandez, Raul 2210 | C50 Italian Game: Giuoco Pianissimo, Normal | 1 · mesa 12 |
| 21 jun 2018 | Alvarez Serrano, Carlos 2202 | 1-0 | Martinez Miura, Enrique 1635 | D46 Semi-Slav Defense: Bogoljubow Variation | 1 · mesa 13 |
| 21 jun 2018 | Cujba, Anca-Claudia 1629 | 0-1 | Quevedo Marin, Manuel 2194 | C47 Four Knights Game: Glek System | 1 · mesa 14 |
| 21 jun 2018 | Ramos Del Campo, Alexander 2165 | 1-0 | Moreno Uribarri, Miguel 1609 | B52 Sicilian Defense: Moscow Variation, Main Line | 1 · mesa 15 |
| 21 jun 2018 | Diaz Begonte, Manuel 1607 | 0-1 | Lozano Suarez, Luis Miguel 2159 | C77 Ruy Lopez: Morphy Defense, Anderssen Variation | 1 · mesa 16 |
| 21 jun 2018 | Garcia Dorado, Alberto 2155 | 1-0 | Blanco Martin, Oscar 1601 | D78 Neo-Grünfeld Defense: Classical Variation, Original Defense | 1 · mesa 17 |
| 21 jun 2018 | Olano Lanchas, Dionisio 1595 | 0-1 | Perez Ordonez, Jose Ramon 2063 | A45 Queen's Pawn Game: Chigorin Variation | 1 · mesa 18 |
| 21 jun 2018 | Aziz Ortego, Omar Luis 2059 | 1-0 | Garcia Lopez, Fernando 1575 | C24 Bishop's Opening: Vienna Hybrid | 1 · mesa 19 |
| 21 jun 2018 | Quintero Cuervo, Edgar 1575 | 0-1 | Varela La Madrid, Tilsia Carolin 2039 | C21 Center Game: Kieseritzky Variation | 1 · mesa 20 |
| 21 jun 2018 | Paarup, Torsten 2038 | 1-0 | Rivero Jimenez, Enrique R. 1573 | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | 1 · mesa 21 |
| 21 jun 2018 | Criado Jimenez, Jose 1553 | 0-1 | Campos Calvo-Sotelo, Javier 2036 | E16 Queen's Indian Defense: Capablanca Variation | 1 · mesa 22 |
| 21 jun 2018 | Lopez de Turiso, Jose Angel 2033 | 1-0 | Martin Serrano, David 1548 | D50 Queen's Gambit Declined: Modern Variation | 1 · mesa 23 |
| 21 jun 2018 | Fernandez Garcia, Emiliano 1548 | 0-1 | Morona Minguez, Miguel 2013 | A45 Indian Defense | 1 · mesa 24 |
| 21 jun 2018 | Luque Ibanes, Manuel 1997 | 1-0 | Mejias Gonzalez, Pedro 1543 | B01 Scandinavian Defense: Icelandic-Palme Gambit | 1 · mesa 25 |
| 21 jun 2018 | Yaniz Lana, Francisco Javier 1528 | 0-1 | De la Orden Alcocer, Alejandro 1996 | A40 Queen's Pawn Game: Modern Defense | 1 · mesa 26 |
| 21 jun 2018 | Spitzer Isbert, Ramon 1982 | 1-0 | Tejuca Verdugo, Carlos 1518 | A00 Hungarian Opening | 1 · mesa 27 |
| 21 jun 2018 | Ramirez Ocana, Eneas 1509 | ½-½ | Campos Palacios, Daniel 1974 | B08 Pirc Defense: Classical Variation, Schlechter Variation | 1 · mesa 28 |
| 21 jun 2018 | Alvarez Abejon, Amilcar 1955 | 1-0 | Cortijo Manso, Luis 1490 | C01 French Defense: Exchange Variation, Monte Carlo Variation | 1 · mesa 29 |
| 21 jun 2018 | Limache Toledo,Piero Jose Carlos 1487 | 0-1 | Lopez Moll, Jose Manuel 1940 | A20 English Opening: King's English Variation | 1 · mesa 30 |
| 21 jun 2018 | Bravo Plaza, Luis 1924 | 1-0 | Lopez Rodriguez, Guillermo 1470 | C84 Ruy Lopez: Closed, Martinez Variation | 1 · mesa 31 |
| 21 jun 2018 | Cabrera Jordan, Esteban 1465 | 0-1 | Santamaria Baeza, Adolfo 1922 | E11 Bogo-Indian Defense: Haiti Variation | 1 · mesa 32 |
| 21 jun 2018 | Pajuelo Morales, Fco. Javier 1909 | 1-0 | Murillo Paz, Pedro P. 1459 | C64 Ruy Lopez: Classical Variation | 1 · mesa 33 |
| 21 jun 2018 | Lopez Garcia, Rafael 1432 | 0-1 | Camarero Izquierdo, Juan Carlos 1907 | B90 Sicilian Defense: Najdorf Variation, Lipnitsky Attack | 1 · mesa 34 |
| 21 jun 2018 | Marcos Herrero, Francisco 1907 | 1-0 | Cerioni Serret, Luca 1426 | E66 King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line | 1 · mesa 35 |
| 21 jun 2018 | Fernandez Garcia, Jorge II 1425 | 0-1 | Martin Arbeloa, Fernando 1891 | A46 Indian Defense: London System | 1 · mesa 36 |
| 21 jun 2018 | Lopez Mijail, Nicolas 1891 | 1-0 | Vallespin Morales, Antonio 1413 | B42 Sicilian Defense: Kan Variation, Modern Variation | 1 · mesa 37 |
| 21 jun 2018 | Perez de las Penas, Jorge Ivan 1392 | 0-1 | Fernandez Aransay, Fernando 1887 | D00 Queen's Pawn Game: Accelerated London System | 1 · mesa 38 |
| 21 jun 2018 | Romera Gutierrez, Jose Antonio 1887 | 1-0 | Paarup Pelaez, David 1387 | D05 Queen's Pawn Game: Colle System | 1 · mesa 39 |
| 21 jun 2018 | Perdiguero Herreros, Alejandro 1370 | 1-0 | Barroso Barroso, Jorge 1879 | B00 Pirc Defense | 1 · mesa 40 |
| 21 jun 2018 | Heras Cuenca, Miguel Angel 1878 | 1-0 | Davies Arroyo, Pablo Akin 1357 | D06 Queen's Gambit Declined: Baltic Defense, Queen Attack | 1 · mesa 41 |
| 21 jun 2018 | Benitez Robles, Antonio 1356 | 0-1 | Vinas Lopez, Carlos 1871 | A21 English Opening: King's English Variation, Kramnik-Shirov Counterattack | 1 · mesa 42 |
| 21 jun 2018 | Sebastian Enesco, Alex 1866 | 1-0 | Diaz Del Prado, Carlos 1306 | C43 Petrov's Defense: Modern Attack | 1 · mesa 43 |
| 21 jun 2018 | Garcia Pumarega, Cesar 1306 | 0-1 | Marin Aso, Jose Luis 1865 | B47 Sicilian Defense: Taimanov Variation, Bastrikov Variation | 1 · mesa 44 |
| 21 jun 2018 | Lopez Heras, Arturo 1865 | 1-0 | Lozano Hernanz, Rodrigo 1248 | C44 Scotch Game | 1 · mesa 45 |
| 21 jun 2018 | Sanabria Gris, Pol 1114 | 0-1 | Fernandez Estremera, Fernando 1860 | B28 Sicilian Defense: O'Kelly Variation | 1 · mesa 46 |
| 21 jun 2018 | Iriarte Diez, Enrique 1833 | 1-0 | Millan Capella, Rodrigo 1096 | A05 King's Indian Attack | 1 · mesa 47 |
| 21 jun 2018 | Ariza Del Castillo, Pablo | 0-1 | Bartolome Martin, Angel 1832 | A62 Benoni Defense: Fianchetto Variation | 1 · mesa 48 |
| 21 jun 2018 | Alvarez Gonzalez, Eduardo 1829 | 1-0 | Abajo Lis, Francisco | D37 Queen's Gambit Declined: Three Knights Variation | 1 · mesa 49 |
| 21 jun 2018 | Castillo Garcia, Mario | 0-1 | Tarrio Ocana, Jose Manuel 1828 | C11 French Defense: Classical Variation, Steinitz Variation | 1 · mesa 50 |