Joelle Grech nailed a basket at the buzzer to give Gibraltar a 41-39 victory over the Principality of Monaco and a spot in the semi-finals, where they were joined by hosts Andorra.
Cyprus and Malta both moved into the semi-finals of the U18 European Championship Women Division C.
In a re-match of the 2013 gold medal game, Malta got the better of U18 European Championship Women Division C hosts Andorra with stifling defence while Cyprus won their first game of the tournament.
Classification Game for 5th to 6th Place
Classification Game for 3rd to 4th Place