Last Sunday, Beni Blaser from Bern managed to climb the Boulder Sabots d'Hélène in Boudry near Neuchâtel. Benjamin suggests 8a as the difficulty level for the sitting start. The line was first used by Nils Favre around a year ago.
Video of Beni Blaser during the inspection of the standing start of Sabots d'Hélène
Video of the first ascent by Nils Favre
https://vimeo.com/187036802