Kieren Fallon's renaissance continued apace at York with victory on Madame Chiang in the Tattersalls Musidora Stakes, a key trial for the Investec Oaks next month.
David Simcock trains the unbeaten filly for owner/breeder Kirsten Rausing and while connections did not fully commit her to the Classic at Epsom, one was left with the impression that as long as the ground is not too fast, she will take her chance.
Winner of a Yarmouth maiden on her only start at two, the Archipenko filly was settled at the back of the pack by Fallon, who recently struck in the 2000 Guineas and has a leading Derby chance in True Story.
Queen's Shama set a strong gallop under Ryan Moore for much of the extended 10-furlong journey, but
Lily Rules took over two furlongs and appeared set for victory.
However, Fallon was only beginning his trademark wind-up and having joined the leader, she knuckled down to win by a length and a quarter at 8-1.
Regardez ran with plenty of promise in third, but both favourite Cambridge and Queen Of Ice were disappointing.
"I had to work hard on her, but we did go quite quick," said Fallon.
"She's a beautiful big filly and David had a lot of confidence in her.
"She didn't do a tap in front and I just had to give her a couple of flicks to keep her going."
Simcock said: "She raced like she works, slightly lazily - she wouldn't be spectacular at home.
"I don't think it would be fair to her to step foot on firm ground at this stage of her career. Cut in the ground is very important to her.
"If it came up with cut in the ground it (Epsom) would certainly be an option. France (French Oaks) is an option as well."