Amaya Valdemoro was again the star for Spain as Domingo Diaz's side went into the last eight on the back of a 78-64 defeat of Turkey.
Valdemoro, the leading scorer in the tournament and an early candidate for MVP, poured in 16 points and also pulled down eight rebounds to nullify the threat of Turkey's Nevriye Yilmaz, the outstanding player on the court.
Nevriye scored 19 points and grabbed 16 rebounds but her efforts were wasted by a Turkey team who trailed from the second minute.
The tone was set when Spain went on a 14-point run in the opening quarter.
The Turks battled hard and even won the fourth quarter but it proved to be too little to late.
Despite the loss, coach Cem Akdag will be happy that his side will play in the quarter-finals, an impressive achievement for a side that is playing in its first ever EuroBasket Women.
Turkey will take on Czech Republic on Friday while Spain face Latvia