Nine Block Puzzle

Game description:

Can you arrange these numbers from 1 to 9? It seems like a task even a baby can deal with. But everything is not that simple. The numbers are fit tightly into a small square and there is only one empty cell left that you need to use as a starting point for your maneuvers. Move one of the tiles nearby into that cell and free up another one. Then repeat the operation with another number. Con-tinue until all the numbers are in their respective places. Shall we try?