Very low, but funny boulder. Start at the left and exit at the left. There are many ways to mantel up. Moving up the right hand so I can push made a difference for me.
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.