Wales were made to toil but stayed on course for a tilt at a third Six Nations Grand Slam in eight years with a scratchy win over Italy in Cardiff.
The Azzurri defence held firm in the first half, the hosts restricted to three Leigh Halfpenny penalties.
Mirco Bergamasco landed one for Italy, but Jamie Roberts charged clear to score 10 minutes into the second half.
But Wales had to wait until three minutes from time before Alex Cuthbert grabbed a second try.
Their only other score was a Rhys Priestland penalty, while Halfpenny was in the sin-bin after a clumsy challenge on Italy captain Sergio Parisse in the air.
While Wales will turn their sights to completing a clean sweep against France, the Azzurri will aim to avoid another Wooden Spoon when they take on Scotland in Rome.
Wales : 15-Leigh Halfpenny, 14-Alex Cuthbert, 13-Jonathan Davies, 12-Jamie Roberts, 11-George North, 10-Rhys Priestland, 9-Mike Phillips-; 1-Gethin Jenkins (c) , 2-Matthew Rees, 3-Adam Jones, 4-Alun Wyn Jones, 5-Ian Evans, 6-Dan Lydiate, 7-Justin Tipuric, 8-Toby Faletau
Replacements: 16-Ken Owens (for Owens, 62), 17-Paul James, 18-Luke Charteris (for AW Jones, 62), 19-Ryan Jones (for Faletau, 66), 20-Rhys Webb (for Phillips, 71) 21-James Hook (for Halfpenny, 74), 22-Scott Williams (for Davies, 69)
Italy : 15-Andrea Masi, 14-Luke McLean, 13-Gonzalo Canale, 12-Alberto Sgarbi, 11-Mirco Bergamasco, 10-Kristopher Burton, 9 - Fabio Semenzato ; 1-Andrea Lo Cicero, 2-Leonardo Ghiraldini, 3-Lorenzo Cittadini, 4-Quintin Geldenhuys, 5-Cornelius van Zyl, 6-Alessandro Zanni, 7-Simone Favaro, 8-Sergio Parisse (c)
Replacements: 16-Tommaso D'Apice (for Ghiraldini, 54), 17-Fabio Staibano (for Cittadini, 51, Staibano for Lo Cicero, 72) 18-Marco Bortolami (for Van Zyl, 51), 19-Robert Barbieri (for Favaro, 63), 20-Tobias Botes (for Semenzato, 66), 21-Tommaso Benvenuti (for Canale, 66), 22-Giulio Toniolatti
