What is Sudoku?
Sudoku is a magical square of numbers placed in a 9x9 arrangement. Depending on difficulty, more or less numbers are previously shown.
Missing numbers have to be found out using the sudoku rules, a few sudoku strategies and logical combinations. Every sum in each row and column as well as in each 3x3 area has to be the same - 45.
The best Sudoku strategies and rules are also described in a short and easy to understand way, including helpful illustrations.