You start with a chess board on which a horse has been placed in the upper left box, as shown in the image. Using valid chess moves you must have the horse pass once through all the squares of the board.
If the difficulty of the problem is not enough for you, in addition, number the boxes with the movement number starting with 1 for the initial square and increasing 1 in each movement. The numbers on the resulting board must form a magic square in which each row and column total 260.
Here is one of the solutions:
You can get more information about this problem on this page
and on Wikipedia.