
Every Sudoku has a unique solution that can be reached logically.
 Sudoku is played over a 9x9 grid, divided to 3x3 sub grids called ''regions''
 Sudoku begins with some of the grid cells already filled with numbers

[ regions ]
 The object of Sudoku is to fill the other empty cells with numbers between 1 and 9 according the following guidelines
 1. Number can appear only once on each row
 Allowed
 Not allowed
 2. Number can appear only once on each column

Allowed

Not allowed
 3. Number can appear only once on each region.
 Allowed
 Not allowed
 A summary of these guidelines would be, that a number should appear only once on each row, column and a region.
 [ Jogo de Sudoku Solution ]