What is Sudoku?

The Sudoku, also known as s├╝doku, su-doku or su doku, is the Japanese fashionable logical pastime (crossword / puzzle).

The rules are simple, consists of a grid of 9×9 cells, divided into 9 quadrants of 3×3, which must be filled so that all rows, columns and quadrants (sets of 3×3 cells) have the numbers from 1 to 9 without any repetition.

Obviously you start from a started board. In order to be correct, Sudokus must have a unique solution as well as rotational symmetry.

And Magic Sudoku?

The Magic Sudoku is a variant of the traditional sudoku. It is characterized by adding the following restrictions to the original sudoku:

This Sudoku is more complicated, do you feel up to it?

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Tips for solving sudokus and free books with sudokus.
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