Ireland wings Mack Hansen and James Lowe scored a try each as flyhalf Johnny Sexton became the joint leading scorer in Six Nations history following a pulsating 22-7 victory over Scotland at Murrayfield.
Replacement number eight Jack Conan scored Ireland’s third try as they turned up the heat in the second half despite the loss of both hookers to injury, leading to flanker Josh van der Flier throwing in at the line-out and three props in the front row of the scrum.
Scotland were in the game at halftime as they trailed 8-7 having scored a try through centre Huw Jones, which will give them some consolation heading into the Rugby World Cup where they face Ireland and South Africa in their pool with only two teams to advance to the quarter-finals.
Ireland, who have claimed the Triple Crown and have their sights now set on a Grand Slam, lead the Six Nations table with 19 points from four games, four ahead of second-placed France.
They host England in their final fixture next Saturday while Scotland welcome Italy.
Ireland claimed an eighth win in a row against the Scots and spoilt the party for home captain Stuart Hogg in his 100th cap, but there are some concerns for coach Andy Farrell.
Centre Gary Ringrose had to be carried off in a stretcher in the final 10 minutes. That followed early injuries suffered by number eight Caelan Doris, hooker Dan Sheehan, lock Iain Henderson, and then Sheehan’s replacement Ronan Kelleher.
Prop Cian Healy came on in the hooker position and performed admirably in the unfamiliar role, as did Van der Flier at the line-out.
Sexton kicked seven points to equal Ronan O’Gara’s record points haul of 557 in Six Nations matches, a missed conversion in the first half denying him the top position outright.
After a period of concerted pressure in the Irish 22, Jones scored the first try of the game after being put through a gap by centre partner Sione Tuipulotu.
But Ireland hit back with a try from Hansen as he produced a brilliant finish in the corner under pressure.
The visitors increased the tempo in the second period, with Hansen taking an excellent high ball to heap pressure on the Scottish line and the ball was worked out wide for Lowe to dot down in the corner.
If that was a blow for Scotland, then a minute later the hammer came down on their chances as Conan ran in his score.