The French battalions are mustering for an assault on the first of the British Classics, which are due to be run early next month.
Chantilly-trained Pas de Reponse gave warning to would-be rivals entered for the Pertemps 1,000 Guineas that she is better than ever following her winter break; the filly shortened two points to 6-1 with Corals following a bloodless victory in Friday's Prix Imprudence at Maisons-Laffitte.
The Danzig filly, who overwhelmed the Godolphin-owned-and-trained Moonlight Paradise in last year's Cheveley Park Stakes at Newmarket, is now on course to follow Ma Biche and Ravinella, who were also trained at Chantilly by Criquette Head, with a crack at the fillies' showpiece over 1,600 metres on May 4.
Pas de Reponse sailed through this seven-furlong prep race with a minimum of fuss. She made all under Freddie Head and, although shaken up towards the end, was never in danger.
The 30-100 shot cruised home by 2.5 lengths from Barnata, with Psylla last of the three runners, three lengths away. As trials go, nothing more could have been expected of the winner, who has now suffered defeat only once in five starts.
Criquette Head said: 'We were very satisfied by the run and it should serve to dust off all the cobwebs prior to Newmarket. Freddie pushed her out so as to ensure that she got maximum benefit from the race. She should be perfect for Newmarket.