Sudoku is a game of logic based on the positioning of the figures from 1 to 9 inside of special puzzles. The objective of Sudoku is to fill up a scheme composed of 81 cells, arranged on 9 lines and 9 columns, in such way that each column, each line and each of the nine 3x3 blocks of cells contains all the digits from 1 to 9 one single time and without repetitions (in other words, 1 must appear one time only on each row, one time only on each column and one time only on each of the nine regions evidenced in bold; the same for all the other figures). The Sudoku player is provided with a partially solved grid, and is required to complete it inserting all the missing digits.

Selecting the option “Free Game”, you will be given a Sudoku puzzle to be completed, without any aid: in other words, like all those which can be found on the many Sudoku magazines. With the option “Assisted Game”, instead, every cell of the puzzle is filled only with the numbers which can be correct in that cell: in practice, the program eliminates directly the digits already present in the row, column and 3x3 block to which that specific cell belongs. This allows you to skip the starting phase, a bit boring, of the game, letting you focus on the logical effort needed to solve the Sudoku puzzle.

The level of difficulty of a Sudoku puzzle is always subjective and it does not depend so much on the number of figures provided, as on their positioning on the scheme. The low level Sudoku puzzle is intended for beginners, solvable by eliminating the possible figures in each cell, by means of rather elementary logical steps. The medium level Sudoku puzzle requires in plus a “what if” approach, but on a very limited number of cells. The high difficulty Sudoku puzzle requires the same “what if” approach on a greater number of cells. None of the puzzles is however of extreme complexity, aiming this site to be a site “for all”.

We wish you to have a nice time with our free Sudoku puzzles!

Some interesting links to sites dealing with Sudoku: Sudoku on Wikipedia | Sudoku on Open Directory Project.