an AI that guesses a number based on how far the previous guesses were away from the number the dark blue pen is just a visual showing how far away the guesses were, and the light blue pen is the range in proportion with the number its trying to guess (x:0 is the number it's trying to guess).
@-Skych- it can usually guess a number out of a million in roughly 700-1000 tries! it might guess it first try but i guess you could say that those chances are "one in a million"