Emparejamiento de la ronda 4 el 2021-04-11 a las 11:00
| M. | Blancas | Ran. | Pts. | FIDE | Fed. | Res. | Negras | Ran. | Pts. | FIDE | Fed. |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Calleja Gonzalez, Unai | 2 | 2,5 | 1858 | EUS | ½-½ | Zubizarreta Landera, Amets | 3 | 2,5 | 1795 | EUS |
| 2 | Vesga Izeta, Markel | 4 | 2,5 | 1793 | EUS | 1-0 | Larranaga Juaristi, Alexander | 5 | 2,0 | 1761 | EUS |
| 3 | Montes Gimenez, Mencia | 7 | 2,0 | 1666 | EUS | 0-1 | Pelegrin Gomez, Hugo | 1 | 2,0 | 1889 | EUS |
| 4 | Tornay, Haizea | 6 | 1,5 | 1678 | EUS | 1-0 | Gimenez Lopez, Zuhaitz | 8 | 1,5 | 1537 | EUS |
| 5 | Zubizarreta Landera, Maddi | 10 | 1,0 | 1294 | EUS | 0-1 | Curiel Garcia, Christian | 13 | 1,5 | 0 | EUS |
| 6 | Perez Garcia, Jon | 14 | 1,0 | 0 | EUS | 0-1 | Esteban Bernardo, Oier | 9 | 1,0 | 1303 | EUS |
| 7 | Lambarri Pozuelo, Aingeru | 12 | 0,0 | 1059 | EUS | 0-1 | Vega Bilbao, Leire | 11 | 0,0 | 1080 | EUS |