Try to beat the clock with these free Sudoku puzzles of varying difficulty, from easy to extra-challenging. Play these Sudoku online or print and solve on paper.

Addicted to Sudoku puzzles? About Puzzles has hundreds of free Sudoku Puzzles for every range of expertise. These Sudoku puzzles range in difficulty from extra easy to extra challenging. No need to be a math whiz, Sudoku puzzles are solved using logic and reasoning.

If you're like the majority of Sudoku puzzlers, then you probably prefer solving Sudoku puzzles online. Here, you'll find free sudoku games of varying levels of difficulty, from kids' Sudoku with 4x4 or 6x6 square grids to Monster Sudoku, with its brain-crunching 12x12 grid.

Discover Sudoku, a popular number puzzle that is solved with logic and reasoning.

Extra-Easy SuDoku puzzles for beginners courtesy of Dave Fisher, your guide to Puzzles at About. These puzzles are print-friendly with four SuDoku puzzles to a page and are intended for those who are new to SuDoku and are just developing their Sudoku solving strategies.

Easy SuDoku puzzles courtesy of Dave Fisher, your guide to Puzzles at About. These puzzles are print-friendly with four SuDoku puzzles to a page and are intended for those who are new to SuDoku and are just developing their Sudoku solving strategies.

Free SuDoku puzzles of medium difficulty courtesy of Dave Fisher, your guide to Puzzles at About. These puzzles are print-friendly with four SuDoku puzzles to a page and are intended for those who are new to SuDoku and are just developing their Sudoku solving strategies.

Free challenging SuDoku puzzles courtesy of Dave Fisher, your guide to Puzzles at About. These puzzles are print-friendly with four SuDoku puzzles to a page and are intended for experienced SuDoku solvers.

Free extra-challenging SuDoku puzzles courtesy of Dave Fisher, your guide to Puzzles at About. These puzzles are print-friendly with four SuDoku puzzles to a page and are intended for expert SuDoku solvers.

Free online Sudoku puzzles for you to enjoy. Thousands of Sudoku puzzles in four difficulty levels: Simple, Easy, Intermediate and Expert.

For the Alphadoku Puzzle enthusiast, printable Alphadoku Puzzles for every level of expertise.

Futoshiki is a type of Japanese number puzzle which, like Sudoku, requires logic rather than mathematical computations to solve. Like Sudoku, arrange the numbers so that they appear only once in each row or column, while taking into consideration the greater and less than symbols that appear in the puzzle. Solve these puzzles online or print for solving on paper.

Tips and tricks on how to play Sudoku Online on your computer.

This tutorial will help the novice Sudoku puzzler learn some basic Sudoku solving strategies, as well as tips and tricks on how to solve these popular number puzzles with reasoning and logic.

Now kids can enjoy these addictive Japanese number puzzles just like the grown-ups do! Excellent for trips or long waits, these books will help young solvers aged 8 and over improve their logic and math skills and assist them in developing patience and concentration.

Addicted to Sudoku? Here's a selection of books to help ease your craving for these popular number puzzles.

If you're looking to buy sudoku games, you've come to the right place. Shop online and get the best price for electronic, hand-held sudoku games, wooden sudoku board games, wipe-off sudoku board games, sudoku card games and sudoku games for kids.

Six difficulty levels from Very Easy to Super Hard. Solve online or print and solve.

Four versions of the popular number game: Classic, Monster, Kids and Squiggly (grid isn't divided into 9 squares, but into irregular blocks). Enjoy playing these puzzles online. Printable puzzles are also available for those who prefer to solve Sudoku on paper (requires Adobe Acrobat Reader).

This online sudoku game, as its name would imply, is a cross between the jigsaw puzzle and the sudoku puzzle. Move the number squares to their proper place. Easy 6x6 grid.

These puzzles, updated daily, come in Easy, Medium and Difficult versions, so you can select the one which best suits your level of expertise. Play these sudoku online or print and solve (requires Adobe Acrobat Reader). Unlike the Daily Crossword, it's free!

This service lets you create up to 50 sudoku puzzles in Adobe PDF format to print and solve. You can choose from easy, medium, hard, or very hard puzzles or have the program randomly select puzzles for you to solve.

About Puzzles SuDoku Poll #2 - How often do you do SuDoku Puzzles?

About Puzzles SuDoku Poll #3 - Where do you do SuDoku puzzles?

Play these easy, medium and hard sudoku online. The game lets you know immediately if you've made a mistake and won't let you enter the wrong number.

Everything you ever wanted to know about Sudoku from the folks at Wikipedia.

Find out the origins of this popular number puzzle game.

Compete with other players to see who can solve these diabolical sudoku puzzles the fastest.

Here's an online version of the popular puzzle game that has taken the world by storm.

A freeware program designed to help in solving sudoku. It uses the same logical methods to solve puzzles as a human would, and explains how it arrived at that conclusion. Excellent aid for those new to Sudoku who need a bit of help figuring out how to play.

A comprehensive list of sudoku terms with definitions.

Online Sudoku generator and solver. Generates and/or solves regular sudoku puzzles or the extra challenging Super Sudoku (a 16x16 grid which uses the letters A-F as well as the numbers 1-9). You must register to play, it's free.

How the Japanese puzzle's invasion has rocked the world of American crossword writers -- and what they’re doing to cope. Interesting article by Matt Gaffney.

Available in online, print and mobile phone versions.

Features easy, medium, hard and evil sudoku that you can play online, but you need to buy the Deluxe version for the solutions. You can also create your own customized sudoku ebook with 8 pages of either easy, advanced, kid or combination puzzles.

Who is Leonhard Euler and did he invent the Sudoku puzzle more than 220 years ago?