Challenge is to cover all the squares with the knight, without landing on any square twice. The knight must visit each square exactly once and in accordance with the chess rules.

Have a look at the How page to know how to play the game. Use the options in settings page to show the possible moves for the Knight.

The Hall of Fame page shows list of people who have completed and the time they took to complete that level. The detail page will show the animated path they took to complete that level. So people who are banging their heads and are stuck in a particular level can take a Hall of Fame details page to see a possible way to solve the puzzle.
Happy Hoppin'.