Digital Puzzle (Number block arranging game)

This is an android version of the old classical puzzle which comes in a plastic case. It is a little bit difficult to solve but very popular among people. Playing Instructions: 1. Press "SHUFFLE / STOP" button to start shuffling the number blocks. 2. Press The same button again to stop shuffling. 3. Now start moving the blocks manually to its original place. You can move only those blocks which are adjacent to empty space, by clicking on it.