Mercurial flyhalf Romain Ntamack scored 17 points as ferocious France put in a stout defensive effort and claimed a 27-23 victory over Wales to keep alive their Grand Slam hopes at the Principality Stadium on Saturday.
Fullback Anthony Bouthier, lock Paul Willemse and Ntamack scored tries as France made a bright start but then had to defend for much of the second half before earning a third successive victory in competition and a first win against Wales in Cardiff in a decade.
Prop Dillon Lewis and flyhalf Dan Biggar scored tries for the home side but they lacked a clinical touch and came second best in the physical contest.
France now face Scotland in Edinburgh on March 8, while Wales are at Twickenham a day earlier to meet England, with their chances of retaining their Six Nations title all but over.