Flemenstar ran out a very easy winner of the Frank Ward Solicitors Arkle Novice Chase at Leopardstown.
Leading before three out in the hands of Andrew Lynch, Peter Casey's seven-year-old quickly pulled clear of his rivals in the testing conditions.
The 6-4 favourite went on to score by 19 lengths from Gift Of Dgab, with British raider Notus De La Tour plugging on for third for David Pipe.
Blackstairmountain was a big disappointment and was never able to put in a challenge.
It was a first Grade One success for the winning trainer, who said: "He's not going to Cheltenham. I don't know where we'll go, maybe something like the Powers Gold Cup at Fairyhouse.
"He likes that soft ground. It's great the owner hung on to him or I wouldn't have had him.
"My son Peter said this morning that the horse was in great form. He had a spin at the Curragh last week.
"He settled well and did everything right. He's a lovely horse and I've always thought the world of him."
Jessica Harrington enjoyed her third win at Leopardstown's weekend meeting when taking the Frank Conroy Memorial Maiden Hurdle with Burn And Turn.
The County Kildare trainer had a double on Saturday, highlighted by Citizenship in the valuable Boylesports.com Hurdle, and she made the best possible start to Sunday's prestigious fixture.
Robbie Power delivered the mare with a telling run to jump ahead of Tennis Cap at the final flight and the pair surged clear on the run-in on the rain-softened ground.
Burn And Turn (100-30) won in good style by two and three-quarter lengths.
Second past the post Double Double was disqualified and placed last after jockey Andrew McNamara failed to weigh in. Hawk Flight was promoted to second and Tennis Cap to third.
Harrington said "I'm delighted with that - Burn And Turn absolutely hated the ground and Robert said it was her ability that got her through.
"She jumped brilliant and should be much better in the spring. Her size suggests that anything she does this year is a bonus as she is a great big mare.
"If the ground is good she will come back for the Grade One Deloitte Novice Hurdle here on 12 February.
"I don't know about Cheltenham but she could go to Aintree - the ground is the key."