About SENA
It is a function specific version of the sliding puzzle that uses an original image.
It is a game to complete the tap doing and the picture by the finger by shuffling the panel on a square board of 3×3, 4×4 or 5×5, and using one mass that becomes empty.
The panel number can be displayed as a hint function in the picture.
When the puzzle is completed, an original image can be preserved on the SD card.