Sudoku Puzzles
Daily puzzles offered at four difficulty levels, available for play online or printed out. Includes rules and archives.
Asymmetrical Sudoku
Includes a generator and solver.
Top Notch Su Doku
Offers several web-based alternatives, including Worduku, code-duku, and Samurai sudoku. Also offers a web-based solver.
BrainBashers
Offers daily puzzle in one of three difficulty levels. Archive of daily puzzles and an assistant.
Braingle Sudoku
Interactive sudoku game with high score tracking. Includes solution strategies.
Count to Nine
Offers five difficulty levels, timer, solution, and printable view.
Daily Sudoku Puzzle
Offers daily timed puzzle and four difficulty levels. [English/Portuguese/Spanish/German/French/Italian]
Everyday Sudoku
Flash puzzles with two difficulty levels.
Fiendish Sudoku
Free daily sudoku puzzles at five difficulty levels. Online solving grid with hints and step-by-step solutions.
Free Sudokus
Offers hints, solution checking and grids in sizes other than 3x3.
Play Sudoku
JavaScript-based Sudoku, available for syndication on other sites.
SudokuDave
Easy to very difficult puzzles that you can play online or print out.
Jaap Scherphuis' Generator
Java-based generator offers four levels of difficulty. Includes view of solution.
Goobix.com
Offers up to four difficulty levels.
Number Logic
Offers a new timed game daily, with a validator and four difficulty levels.
Sudoku by Froggy
Generates 2x2, 3x3, and 5x5 puzzles with adjustable level of difficulty.
Paul's Pages
Offers random, crafted, and non-standard puzzles. Includes hints and import/export tool.
Play Sudoku
Registered users can save unsolved puzzles and high scores are kept at three difficulty levels. Also offers rules and tips for solving. [English/Russian/German]
Puzzles4Free.com
Free sudoku puzzles daily for you to solve. New puzzles every day.
Ridiculopathy - Sudoku Shuffle
Play with letters or numbers in the grid. Includes high scores, hints and move verification. [Requires Flash]
Bob Hanson's Sudoku Assistant
JavaScript-based gameboard and solver. Can use cross-hatch scanning and subset elimination.
Su-Doku.net
Offers daily puzzle, downloadable games, and instructions.
Sudoku League
League of online competitors. Scoreboard, rules, FAQ, hall of fame, and instructions. [English/Czech]
Sudoku
Japanese puzzle game played by placing numbers in a grid so that each number only appears once in each row, column, and region. Offers three difficulty levels.
Sudoku Central
Offers daily puzzle for printing. Also includes archive, online solver, and solving tips.
Sudoku Hints
Offers daily web-based puzzles with five difficulty levels. Includes solver, helper, and XML feed.
Sudoku Prime
Offers three difficulty levels and the ability to play against other players. [Requires Shockwave]
Web Sudoku
Free puzzles with difficulty levels ranging from easy to evil. Provides print and online syndication.
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