Coach Warren Gatland says his second-string side's narrow win over Italy in Rome has left Wales with a stiff task if they are to retain their Six Nations title against Ireland on Sunday.
Wales need to win by at least 13 points in Cardiff decider to deny Ireland the Grand Slam
Gatland named his full-strength side to face the Irish having rested many of his leading players in Rome.
The former Waikato coach says there's also a triple crown at stake and a 13 point deficit is by no means insurmountable.
However Wales has not beaten Ireland by 13 points or more since a 23-9 success in Cardiff 26 years ago.
