The object of the game is to make all the number tiles zero. The number on each tile corresponds to the number of spaces that tile can move. A tile with the number 1 means the tile can move to an adjacent, empty square on the grid. The tile can move left. right, up, down, or diagonally. A tile with the number 2 can move to an empty grid square that is two spaces away and so on. You must plan ahead and make strategic moves to complete each challenge. There are 94 mini-puzzles in all.