I was about 7 years old when we moved here from England because my dad is a history teacher and deals with a pirate treasure research. Today we would have to go fishing but when I went to his room I didn't find it. I ran in his studio and on the desk there were sheets everywhere with notes and many maps. Maybe he discovered something about the treasure and is following new tracks!
On the ground I found this crumpled sheet... let's start by trying to solve this logic game.