Katie Walsh and Willie Mullins who have both enjoyed terrific seasons were back in the winner's enclosure after Dorset Square landed the www.thetote.com Hurdle.
Walsh settled her mount in mid-division and made progress to join the leaders approaching the straight.
The pair soon moved through to pick up the lead going to the last and kept on well for a two length win over stablemate Deutschland
Dorset Square was Mullins twelveth winner of the festival and Walsh's second.
Winning trainer Mullins stated: "Katie [Walsh] is a tipp top jockey."
"He's not the biggest horse in the world and physically he's not capable of carrying anything over ten stone seven pounds."
