Zenda may be supplemented for Guineas Zenda, winner of the Poule d`Essai des Pouliches at Longchamp, may be supplemented for Sunday`s Entenmann`s Irish 1000 Guineas.The John Gosden-trained filly, a narrow winner of the French equivalent a week ago, may be added to the Curragh field at tomorrow`s supplementary stage at a cost of 38,000 Euros.Teddy Beckett, racing manager to owner Khalid Abdullah, confirmed they are considering the Irish race but do not plan to make a firm decision until tomorrow.He said: 'We have not decided as yet. She is a possible but it has not been decided. We have to make a decision by tomorrow afternoon as that is when the supplementary stage is.'She could join Mick Channon`s Queen`s Logic, who will be bidding for compensation after going lame at the last minute before the Sagitta 1000 Guineas, in the one-mile Classic.Sir Michael Stoute`s Alasha, third in the Guineas, is another possible runner along with Gossamer who disappointed when favourite at Newmarket.There are 42 British entries among the 91-strong preliminary field. Forfeits and supplementary entries must be completed by 12noon tomorrow.Forfeits and extra entries for the weekend`s two other big races - the Entenmann`s Irish 2000 Guineas and the Tattersalls Gold Cup - must also be completed by the same deadline.A preliminary field of 72 horses is engaged in the 2000 Guineas, but Sagitta 2000 Guineas winner Rock Of Gibraltar looks certain to go off favourite after trainer Aidan O`Brien confirmed he is a definite runner at the Curragh.The Tattersalls Gold Cup has attracted 29 entries, with Nayef and Desert Deer two of the possible 19 runners in the Group One event over a mile and two furlongs.