Check out this video of Nalle Hukkataival climbing L’alchimiste in Font. The problem was considered cutting edge when first climbed by Marc Le Menestrel in the mid 90’s. Shortly after, the crux holds were broken and the problem hasn’t been repeated until now. I haven’t heard of a grade yet suggested by Nalle, but given the time he put into it, it must be in the 8c/V15 range. Nalle is on fire these days. He seems to tick a new 8c boulder every few weeks!