The game rules are simple
Even if you don't know how to play chess, you do know this chess piece - a knight. And you probably know how it moves. It's like a capital letter L - right side up, upside down, or sideways
Your goal is to fill in the 100-square field by moving this way
When there are no empty squares, you win
If the field still has some empty squares, but there is no way to make an L to cover them - I'm sorry - you lose