@Giuseppe Amenta Uuhhmmm, I am a bit confused... I do not want to "cheat" so if you tell me what is the hammer function I will try to complete the level as you planned I just read what you wrote in the comment... so the hammer is just to push B and go up?
Well, I managed to win only using the FD hammer to push B... hope I found the intended way... thanks for sharing @Giuseppe Amenta