Sudoku is a game that is played on a chessboard, consisting of 9 rows and 9 columns; There are a total of 81 boxes; starting from left and from the boxes belonging to three rows and three adjacent columns form a box with 9 boxes, in total you have 9 squares.

At the beginning of the game are already present in some of the numbers boxes, including between 1 to 9. These initial numbers have the characteristic that in each row, in each column, in each pane are all different from each other.

Purpose of the game is to fill all the boxes with numbers between 1 and 9, so that in each row, in each column, in each pane are all different from each other, ie each number must appear only once.

In the guide attached to the app it explains how to proceed in the game and what are the functions of the app commands.

To proceed quickly in the game it is recommended to use a pen or pencil to smartphones.

app startup you have a first screen presentation, where you can see the animation screens of the initial numbers and complete screens with all the numbers. Touching the "STOP" button stops the animation display; if you touch the "PLAY" button resumes the animation.

Before moving on to the next screen you are preferred for increased speed of the game off the animation and the background audio, tapping the "STOP" button and the audio pause button.

To move to the next screen, touch the "PLAY" button and you can play immediately after touching the command Easy or Difficult.

In the attached guide app controls the game and tips for finding the solutions are shown.