Starts with a sloper that nobody could possibly hold, and moves up on crimps that nobody could possibly hold. But it has this heel hook that lets you do all those things. It might even help to be short!
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.