Optimization improvements
Choose your puzzle field size and go on. You have to place numbers in correct order sliding them around. The difference with 15 puzzle is that you don't have free empty space and tiles loop over. This effect can remind you Rubik's cube gameplay. If you are rubik's cube fan you will find this puzzle also very attractive. If you cannot solve all the faces of the Rubik's cube, you will like to ponder in this puzzle.
Find your principle for solving this puzzle!
Play with smile!
