Here's a small hint in ROT13, I hope it helps!Gur fbyhgvba erdhverf OBGU bs gur pengrf - qba'g nyybj rvgure bs gurz gb orpbzr vanpprffvoyr :)
Thanks a lot Configuration, I will try that !
Ho ouaaaa, I made it. It was so clever ! Every move is important, especialy the first one.