| 25 mar 2023 | Dominguez Garcia, Jose Manuel 1786 | Ver la partida 1-0 | Rosado Poveda, Javier 1347 | A02 Bird Opening | ronda 1 · mesa 1 |
| 25 mar 2023 | Medina Lucena, Emilio 1330 | Ver la partida 1-0 | Martin Sanchez, Pablo 1699 | D11 Slav Defense: Modern Line | ronda 1 · mesa 2 |
| 25 mar 2023 | Godoy Herrera, Carlos 1693 | Ver la partida 1-0 | Rebollo Rico, Ignacio 1296 | D03 Queen's Pawn Game: Torre Attack | ronda 1 · mesa 3 |
| 25 mar 2023 | Logrosan Martinez, Ismael 1252 | Ver la partida 1-0 | Gil Fernandez, Daniel 1675 | B00 King's Pawn Game | ronda 1 · mesa 4 |
| 25 mar 2023 | Rodriguez Varela, Alvaro 1634 | Ver la partida 1-0 | Munoz Merinas, Cesar 1224 | B07 Pirc Defense: Byrne Variation | ronda 1 · mesa 5 |
| 25 mar 2023 | Mendoza Rivilla, Javier 1213 | Ver la partida 0-1 | Retolaza Izpizua, Aitor 1633 | D15 Slav Defense: Chebanenko Variation | ronda 1 · mesa 6 |
| 25 mar 2023 | Rodriguez Brigido, Javier | Ver la partida 0-1 | Sanchez Pablo, Jorge 1619 | B12 Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | ronda 1 · mesa 7 |
| 25 mar 2023 | Arribas Lopez, Sara 1581 | Ver la partida 1-0 | Carbo de Haya, Jaime 1176 | B23 Sicilian Defense: Closed | ronda 1 · mesa 8 |
| 25 mar 2023 | Rebollo Serret, Mauro 1159 | Ver la partida 0-1 | Perez Paleo, Javier 1544 | A45 Indian Defense: Accelerated London System | ronda 1 · mesa 9 |
| 25 mar 2023 | Andreani Macri, Nicolas 1524 | Ver la partida 1-0 | Alarcon Alarcon, Elvis Eduardo | B23 Sicilian Defense: Closed | ronda 1 · mesa 10 |
| 25 mar 2023 | Ayala Jimenez, Abel | Ver la partida 0-1 | Hernandez Tadeo, Gabriel 1503 | C63 Ruy Lopez: Schliemann Defense | ronda 1 · mesa 11 |
| 25 mar 2023 | Manas Carrete, Miguel Angel 1500 | Ver la partida 1-0 | Ayala Jimenez, Eric | D10 Slav Defense | ronda 1 · mesa 12 |
| 25 mar 2023 | Ayala Jimenez, Joel | Ver la partida 0-1 | Gomez Diaz, Rodrigo 1496 | C01 French Defense: Exchange Variation | ronda 1 · mesa 13 |
| 25 mar 2023 | Fuentenebro Cediel, Alberto 1493 | Ver la partida 1-0 | Bonte Blazquez, Antonio | B00 Pirc Defense | ronda 1 · mesa 14 |
| 25 mar 2023 | Carreno Garcia, Santiago | Ver la partida 0-1 | Altelarrea Hernando, Rodrigo 1486 | C01 French Defense: Exchange Variation | ronda 1 · mesa 15 |
| 25 mar 2023 | Sanchez Medina, Miguel A. 1441 | Ver la partida 1-0 | Casado de Jose, Alfonso | C10 French Defense: Marshall Gambit | ronda 1 · mesa 16 |
| 25 mar 2023 | Garcia Vieira, Francisco Javier | Ver la partida 1-0 | Martin Santos, Ignacio 1394 | B29 Sicilian Defense: Nimzowitsch Variation, Closed Variation | ronda 1 · mesa 17 |
| 25 mar 2023 | Lopez Manso, Jeronimo 1387 | Ver la partida 1-0 | Gutierrez Fernandez, Miguel | A02 Bird Opening | ronda 1 · mesa 18 |
| 25 mar 2023 | Pinilla Irshed, Dario | Ver la partida 0-1 | Piccone Uribe, Luis Guillermo 1354 | C02 French Defense: Advance Variation | ronda 1 · mesa 19 |