See also:
- 9x9, 6x6 and Samurai Sudoku - Offers classic Sudoku and variants, as well as an online solver.
- Christiaan Olie - Personal page describing Sudoku, rules, strategies, and offering puzzles to print. [Dutch/English]
- Daily Sudoku - Offers a different printable puzzle each day. Also includes solutions and FAQ.
- Daily SuDoku - Offers daily printable puzzles of varying difficulties, including Sudoku for Kids. Also offers archive of past puzzles, tool for rendering custom puzzles, FAQ, and books for purchase.
- Dan Rice's Sudoku Blog - Blog discussing techniques for creating and solving puzzles, including hard puzzles. Also offers a daily puzzle.
- Flying Frog Consultancy - This web page describes a 19-line (769-byte) OCaml program that solves Sudoku puzzles.
- Fundoku - Randomly generated puzzles at three difficulty levels.
- Gaby Vanhegan - Daily and random puzzles at six difficulty levels, Flash and JavaScript solvers, solving techniques and glossary of terms.
- Grant Gibson - Offers syndicated puzzles for websites as well as print publications.
- Hirofumi Fujiwara's Sudoku - Offers a tutorial for creating puzzles, a Java-based solver, and links to other resources. [English/Japanese]
- Information For Beginners - Collection of printable grids, ordered by difficulty level. Solutions provided. Includes rules and solving methods.
- Knight Features - Publishing syndicate in the UK and Ireland. Offers several variations, including classic, colour, kids, and Sudoku Word.
- Maths Is Fun - Offers a number of applications and solvers for a variety of platforms. Also offers custom puzzles.
- Minimum Sudoku - A project collecting Sudoku with the smallest number of givens that are still uniquely solvable. Offers the puzzle for download in text format.
- Nikoli - From the company that introduced the game to Japan in 1984. Description, history, tutorial, and instructions on constructing custom puzzles.
- Prize Sudoku - Offers competitions for prizes. Traditional Sudoku, Godoku (letters) and Super Sudoku (16x16).
- Puzzle Bus - Offers a daily puzzle, books, software, and related merchandise. Also offers puzzles for syndication.
- Puzzle Japan - Offers tutorial, downloadable puzzles (PDF format), and a Java applet.
- Simple Sudoku Solver - JavaScript brute force solver.
- Sky One - Information on UK-based cellular provider's world-record largest Sudoku puzzle and accompanying contest.
- SolveMySudoku.com - Browser-based puzzle solver.
- Solving Sudoku - Step by step guide to solving sudoku puzzles. Goes from basic to advanced techniques.
- Sudoku - Free daily puzzle with solution. Includes archive of past puzzles.
- Sudoku - Provides sudoku puzzles in easy, medium and hard levels with their solutions. Also provides facility for daily email sudoku newsletter.
- Sudoku Addict - Offers printable grids and solution walkthroughs.
- Sudoku enumeration - Several programs in different languages for analyzing possible Sudoku combinations.
- Sudoku Fun Puzzles - A website representation of Sudoku, the broad sheet newspaper puzzle imported from Japan. Leaderboard lets players compare completion times.
- Sudoku Helper - Free online helper application. Shows options for each square, and allows backtrack, restart, or save.
- Sudoku Master - Free daily grids that can be printed. Also offers solution and archive.
- Sudoku Online - Includes Sudoku tips and strategies as well as a downloadable game and a 3D Sudoku puzzle.
- Sudoku Online Solver from friko.net - Free online generator, solver, and helper. [English/French/Spanish/Polish]
- Sudoku Place - Offers daily puzzle in PDF format. Includes archive, FAQ, and a "dozen" variant.
- Sudoku Puzzles - Offers four difficulty levels. The puzzles can be solved online or downloaded as a PDF file. [English/German/French/Spanish/Dutch/Portuguese/Italian]
- Sudoku.com - Includes an overview of how Sudoku is solved, a monthly contest and a downloadable Sudoku game. Also includes a kids section and discussion forums.
- Sudoku.li - History, instructions, variants and puzzles in four difficulty levels (PDF format). [German/French/English/Spanish/Italian]
- Sudoku-san - Free daily puzzles with four difficulty levels. Also offers a solving assistant and downloadable e-book collections for purchase.
- SuDokuMate - SuDokuMate is a SuDoku Helper (not a Solver) that replaces pencil and paper to aid solving.
- SudokusWeb.com - Free daily printable Sudokus. Also offers history, rules, and solving techniques. [English/Spanish/French/Catalan/German/Portuguese]
- The Heebie Su Doku Site - Offers a glossary of terms, links to puzzles and variants, and tips for solving.
- The Sudoku Grandmaster - Self-styled Grandmaster offers tips on life as Sudoku, humorous claims of achievement, and a daily puzzle.
- The Times - Articles and puzzles from The Times (London).
- Universal Press Syndicate - Offers monochrome and color grids and variations for online and print syndication. Information on syndication as well as an interview with creator David Bodycombe.
- Vegard Hanssen's page - Offers a database of crafted puzzles, organized by difficulty. Also offers FAQ and forum. [Norwegian/English]
- Wikipedia: Sudoku - An encyclopedia entry describing the rules, history, strategies and variants of Sudoku.
- Yosmany.net - Offers HTML to add a JavaScript-based puzzle to any site. [English/Spanish]
Media publications
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