Oh! now it's clear! I loved the game! Please make it a full game it's so fun to play!
I managed to complete the game! Thank you for this interesting experience!
Bug Report: By saving the file and reloading it, a bloc can be at the same position as the player. I don't think it's a bug because you can just press R to reload the game, but maybe it will be cool if the bloc breaks when doing that, it will be a very good feature.