Wilfried Bony scored twice to take Ivory Coast into the semi-finals of the Africa Cup of Nations.
The new Manchester City striker headed the Elephants in front from a right-wing cross by Max Gradel.
Hilal Soudani equalised for Algeria against the run of play early in the second half and then forced goalkeeper Sylvain Gbohouo into a brilliant save.
Gbohouo was rewarded almost immediately when Bony headed in Yaya Toure’s free-kick and Gervinho grabbed a late third.
