Sudoku

• Games: Paper and Pencil 
• Games: Video Games: Puzzle: Sudoku 

• CP- Solutions : Sudoku  - Discusses the history, provides instructions, and shows variations of the game.
• Daily SuDoku  - Regularly updated sudokus with an option to download printable versions of the featured puzzles.
• DailySudoku  - Chronicles the history of the game including puzzle rules. Answers to frequently asked questions provided.
• Flying Frog Consultancy  - Presents the programming codes used for sudoku solving applications.
• Fundoku  - Features an application that creates random puzzles on various difficulty levels.
• Grant Gibson  - Sells puzzles for print and online publications. Includes design tips and playing guides.
• Hirofumi Fujiwara's Sudoku  - Provides guides for puzzle creation, features a java-bases solver, and provides resource links.
• Knight Features  - Presents the game's variations, alternative rules, and player resources.
• Learn Sudoku  - Describes what it is, how to play, basic and advanced techniques.
• Maths Is Fun  - Presents various solvers and creators of the gaming system for different computer OS.
• Minimum Sudoku  - Explores the mathematical concepts and applications of the logic-based game.
• Number Logic  - Sudoku portal with newly created puzzles uploaded each day.
• Prize Sudoku  - Highlights the competitions for traditional sudoku, godoku (letters) and super sudoku (16x16) puzzles.
• Puzzle Bus  - Provides lists of puzzles and merchandise for sale; and presents links to relevant logic games.
• Quality Sudokus  - Offers new easy, medium, hard, and very hard puzzles on a daily basis. Puzzles are available in a variety of layouts and are in PDF format.
• Scanraid LTD Search Technologies  - Explores the logical side of solving the analytical game.
• Simple Sudoku Solver  - Features a Java-based program that solves sudoku problems.
• Solve My Sudoku  - Shows an interactive tool that assists in solving sudoku puzzles based on inputed information.
• Solving Sudoku  - Provides guides to solving puzzles of the game in different levels. Shows relevant resources.
• Sudoku  - Features printable sudoku puzzles and shows solutions to previous problems.
• Sudoku  - Collection of printable games, ordered by difficulty level.
• Sudoku Addict  - Features an interactive program that generates and solves various difficulty levels of the sudoku games.
• Sudoku Blue  - Play online with difficulty levels from easy to expert. Features include pencil marks, hints, and highlighting of incorrect answers.
• Sudoku Challenge  - Offers a large variety of online puzzles from easy to evil levels. Covers basic rules and play in practice or challenge mode.
• Sudoku Daily Puzzle  - Provides hundreds of puzzles, all with easy, medium, and difficult versions. Includes a history of Sudoku, complete rules of play, and archives.
• Sudoku Enumeration  - Compiles codes for different programs for solving and analyzing sudoku problems.
• Sudoku Helper  - Highlights an interactive tool that discusses techniques of the logical game.
• Sudoku Online Solver  - Presents an interactive program that generates and solves various sudoku problems.
• Sudoku Puzzles For Beginners  - Collection of printable puzzles, ranging from easy to extremely difficult.
• Sudoku.org.uk  - Catering to sudoku enthusiasts. Presents discussion forums and competition details.
• Times Online: Sudoku  - Includes Sudoku puzzles and solution.
• US Puzzle and Sudoku Championships  - Find a registration form for future games, solving tips, and rules for the puzzle and sudoku championships.
• Web Sudoku  - Online version of Sudoku offering several levels of play, including easy, medium, hard, and evil. Also offers a letter version, sale of ebooks, and version for offline play. Available in English, French, German, and Spanish.