Slide Puzzle - Dog description

A slide puzzle is one were the aim is to sort the given pieces, using a blank slot for movement.
Consisting in moving the pieces to the correct square in order to assemble the picture.

You have to slide the tiles to reassemble a picture, by touching the block you want to move.
You can choose the size of the board between 3x3, 4x4, and 5x5 blocks for more challenge!