This is a simple sliding tiles puzzle, also called Gem Puzzle, Boss Puzzle, Mystic Square, etc
The objective of the puzzle is to rearrange the numbers.
It is a little different to the one already on plasma as:
- It makes sure all initial distributions are solvable.
- It's animated.
- Accepts solutions with the blank square at the beginning or in the end, as long as the cells are ordered.
You can make the puzzle 2x2 tiles to 9x9 tiles. No bigger because you are supposed to be able to see the numbers.