The Sudoku is a game that comes from Japan meaning "the digits must remain single". the puzzle is a 9x9 grid and the goal is to fill in the empty cells so that each column, row and region contains the digits 1-9 exactly once.
In this moment there are millions of players throughout the world but rare are those which hold the true secret of "the enigma sudoku".
Buy the results of the research made by 5 specialists to penetrate the mysteries of this game.
This software explains step by step how to solve any sudoku in few minutes, without error and without back return. It explains precisely why the digit are written and shows the grid step by step.