Free daily Sudoku, 'killer' Sudoku and Addoku puzzles

What is Sudoku? | How to play Sudoku | How to solve | Daily Sudoku puzzle | Daily Addoku

Free Daily puzzles

Our new Puzzle Toolbar delivers new Sudoku, Killer Sudoku and Kakuro puzzles to your web browser every day, and it's completely free! Just click the "Download Toolbar" button below.

Using Firefox? - download from here instead

Sudoku software for your PC:

Whilst this site has a great free daily Sudoku game, you might find yourself wanting more than 1 puzzle a day, or more features. We recommend you try the Sudoku games listed below:

The only game to feature 3 different types of Sudoku Puzzle!

Includes the amazing new Addoku (aka 'Killer' Sudoku)

Also includes Sudoku-X, and regular Sudoku

Comes with an unlimited supply of puzzles!

Newspaper Puzzle Challenge - Sudoku Edition

8 Different types of puzzles to play including Sudoku, Kakuro, Crosswords, Killer Sudoku, Sudoku-X, Giant Sudoku & more!

The most varied and comprehensive puzzle game ever

Innovative newspaper style interface

What is Sudoku?

Sudoku board

Solved board

Sudoku puzzles are 9x9 grids of numbers, subdivided into 3x3 blocks. When you begin a puzzle, some of the numbers are already filled in, and you have to fill in the blank squares using logic. You must fill the grid so that all the numbers 1-9 appear in each row, column and 3x3 box. However, no row, column or 3x3 box may have two of the same number.

Sudoku puzzles first appeared in New York in the late 1970's under the title "Number Place". They were introduced to Japan in 1984 where they were renamed to Sudoku (pronounced sue-do-koo; su = number, doku = single), so Sudoku translates as "single number".

There are also many fascinating varients of Sudoku, of one which is "Killer" Sudoku, which combines elements of Kakuro. "Desktop Sudoku" is the only PC game which features Killer Sudoku puzzles, and Sudoku X
click here to try it out.