What is Fuzzy Logic in Gaming?

I'm taking a game design course and I need to know what fuzzy logic is. I understand that its different degrees of like truth, but I mean like how is it used in like chess or something. Maybe another game example? I also wonder, like does minecraft use fuzzy logic? How would that work. I don't understand. Do all games use fuzzy logic?

Not sure what fuzzy logic is, but i think it is the distortion in the blocks depending on the amount of distance you are from them, not confirmed, just an academic guess.