At the 2012 World Championship he made it to the quarter-finals for the first time since his 2008 title. He dropped just three sets on his way to the last 8 by defeating John Henderson, Richie Burnett and Kevin Painter. He was involved in one of the greatest matches ever seen at the World Championships against James Wade. Wade opened up a 3–1 set lead, before his form started to dip to coincide with Part scoring heavier and hitting more doubles to win 3 sets in a row. The players broke each other's throws twice in the deciding set to require a sudden-death leg, which Wade managed to win. Part said afterwards that it was "the greatest game I've ever lost!".