Hi, this is a little math problem involving graph (that's the Königsberg's problem solved by Euler) that I think is possible using only our imagination to this new consept (note that the proof I provided might not be increadibly rigourus but still works (I think)) If you want to use it you can (and should if you want to contact me lol) credit my main: @morveman (no pb if you don't tho) I also let some space for your own exploration Sorry for my bad english, it's not my main language (even tho I still make enormus mistakes in my main language) if you have any questions fell free to ask or if it is to correct my english !!