Fifteen Puzzle: Dogs Game

The game "Spots: Dogs" is a well-known puzzle game, which is a set of knuckles, lying in a square box. The number of knuckles can be different, such as 8, 15, 24 or more. The playing field is always a square and divided into a pair of small squares, which are the bones. In some games, there is an image of numbers on the knuckles, and in other games the image is in the form of a picture.