<div dir="ltr"><a href="https://www.reddit.com/r/programmingchallenges/comments/5c6z3r/backtrackingpathfinding_problem/">https://www.reddit.com/r/programmingchallenges/comments/5c6z3r/backtrackingpathfinding_problem/</a><br><div><br></div><div>I am not sure what is meant by "must use backtracking", does anyone know what is meant by that?</div><div><br></div><div>Julian</div></div>