The Czech Republic ended the medal hopes of host Turkey on Friday bymarching into the last four.
The Czechs, silver-medal winners two years ago, clinched an 86-60 triumph to remain unbeaten in this event.
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.
This time lady luck was shining on Turkey as the hosts clinched a last-gasp victory over Romania to retain hope of qualifying for the quarter-finals.
Turkey were edged out in the final minute by Lithuania on Sunday but clinched a 66-64 win on Tuesday to go 2-2 in Group B with a game remaining.
