Scotland 10 Ireland 40
Stephen Doyle at Murrayfield
Sean O'Brien bagged a try brace to help Ireland to a superb 30-point victory which puts them in the box seat to successfully defend their Six Nations title.
Johnny Sexton converted both plus tries from Paul O'Connell and Jared Payne in either half while the outhalf kicked four of Ireland's five penalties with sub Ian Madigan kicking the fifth.
Skipper O'Connell led from the front with a pick and go try scored in the 4th minute and 5 minutes later Sexton's first penalty had Ireland 10-0 in front.
Greg Laidlaw responded with a penalty for Scotland before O'Brien went over in the 25th minute after taking a crafty pass from Devin Toner resulting from a nicely worked Irish lineout.
Scotland's only try of the match came 6 minutes later after Rob Kearney failed to gather a loose ball near the back.
Scottish outhalf Finn Russell pounced and made it over the line before Laidlaw grabbed the afters to close the gap to 7 but a late first-half Sexton penalty made the gap 10 at half-time.
10 minutes into the second-half and after kicking his third penalty, Sexton made a lovely deft pass to Payne who ran a terrific line for a short dive over and Ireland looked in total control.
The nerves hadn't totally subsided though and there were doubts when Sexton missed two penalties within the space of 5 minutes but he managed to make amends with one in the 62nd minute before going off with cramp.
The outhalf celebrated from the bench when O'Brien scored his second try 9 minutes from time and the win was sealed with the conversion from Madigan.