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Trainer Aidan O'Brien hopes Coolmore will race in the 1000 Guineas on 1 May.
The full sister of Gleneagles will race in the Lanwades Stud Nell Gwyn Stakes at Newmarket on Tuesday, as connections look to prepare the three-year-old for the 1000 Guineas at the same course.
Coolmore finished fourth to stable-mate and 1000 Guineas favourite in last season's Fillies' Mile, and would be a long shot for the May Day race.
"We think she'll stay further and the purpose of going is to see whether we'll go back for the English Guineas," O'Brien said.
"We always thought maybe the Irish Guineas and then step up to a mile and a quarter.
"Seven furlongs will be tight enough for her, but it will give us a feel."
Irish trainer Joe Murphy is also using the race to test the 1000 Guineas credentials of Only Mine, who won a Listed prize on the Rowley Mile last autumn.
He said: "She's in good form and we're keen to find out whether she'll stay. Her pedigree suggests she should, but she does have a lot of speed.
"She's drawn in stall 14 and which way they'll go we'll find out on the day. Pat Smullen rides her now after Tipperary was called off and he knows her well.
"We'll find out whether she'll stay seven furlongs or whether we need to be going back to six. She's healthy and well and we're on a fact-finding mission.
"I'd say it's as good a 1000 Guineas trial as you'll find."