Correct
差之毫厘，谬以千里
/ chā zhī háo lí, miù yǐ qiān lǐ /
Strokes
Definition
the slightest difference leads to a huge error (idiom)/a miss is as good as a mile
Example
Definition
an error of the breadth of a single hair can lead a thousand li astray—a small discrepancy leads to a great error; One false move may cause you to lose the whole game.