Or two vertically and one horizontally. Actually, the official rules describe it as “to one of the squares nearest to that on which it stands but not on the same rank, file or diagonal.” (https://www.fide.com/fide/handbook.html?id=207&view=article) but most beginner’s books don’t describe it that way.
I imagine you can find computer solutions to the knight’s tour without the bother of working it out yourself.
Or two vertically and one horizontally. Actually, the official rules describe it as “to one of the squares nearest to that on which it stands but not on the same rank, file or diagonal.” (https://www.fide.com/fide/handbook.html?id=207&view=article) but most beginner’s books don’t describe it that way.
I imagine you can find computer solutions to the knight’s tour without the bother of working it out yourself.