Directory of Sudoku Resources

Home > Games > Puzzles > Brain Teasers > Sudoku

Created as "Number Place" in the 1970s, this logic puzzle gained mass popularity in Japan in the 1980s. "Sudoku", or "Su Doku", is Japanese for "number singly." In 2005 it gained great appeal in the United Kingdom and is rapidly expanding to the rest of the Western Hemisphere. The aim of the puzzle is to place a number from 1-9 in every square in the grid so that every row, column and 3x3 "region" includes each number once only. While numbers are most often used, this is only for simplicity. No math is required, only logic. There are also variants using letters or symbols, different-sized grids, overlapping grids, and other variations.

Subcategories

• Browser Based
• Chats and Forums
• Software
• Variants

Resources in This Category

• 7Sudoku

  http://www.7sudoku.com/
  Single daily Sudoku puzzle, 5 different levels (easy to very difficult), playable online (Flash required) and printable to PDF.

• 9x9, 6x6 and Samurai Sudoku

  http://www.sudoku.4thewww.com/
  Offers classic Sudoku and variants, as well as an online solver.

• BBC News: The puzzling popularity of Su Doku

  http://news.bbc.co.uk/2/hi/uk_news/magazine/4469719.stm
  Article by Paula Dear. Covers history in Japan and the UK and compares to the Rubik's cube craze of the 80s.

• Cluemaster Sudoku

  http://www.sudoku.org.uk/
  Daily Sudoku, Jigsaw, and Killer puzzles. Interactive Sudoku solver/teacher and tutorials.

• Daily SuDoku

  http://www.dailysudoku.co.uk/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.

• Daily-Sudoku.com

  http://www.daily-sudoku.com/
  Offers a different printable puzzle each day. Also includes solutions and FAQ.

• Free Printable Sudoku Puzzles

  http://www.printable-sudoku-puzzles.com/
  Easy printing of 6 sudokus per page.

• Free-Sudoku.org

  http://www.free-sudoku.com/
  Clean site with many puzzles at all levels, solvable online.

• Freedoku

  http://en.freedoku.net/
  Free online sudoku. Offers online game on 5 difficulty levels, changeable skins and printing up to 4 sudoku boards on one sheet of paper.

• GASP Sudoku

  http://gaspmobilegames.com/sudoku/desc.htm
  Solve Sudokus online. With explanation of some common solving strategies.

• Hirofumi Fujiwara's Sudoku

  http://www.pro.or.jp/~fuji/index-eng.html
  Offers a tutorial for creating puzzles, a Java-based solver, and links to other resources. [English/Japanese]

• internetSudoku

  http://internetsudoku.net/
  solve Sudoku puzzles online, 5 levels, clean interface

• Planet Sudoku

  http://planetsudoku.com/
  Site with a very large number of puzzles and variants (4x4...25x25, Multi 2, Multi 4, Samurai Sudoku, etc.). Beginner to expert, solving engine, training aids, and "app-like" user interface.

• Play Sudoku

  http://www.play-sudoku.com/
  Flash version of the Sudoku game. Also offers solution.

• Printable Sudoku Puzzles

  http://www.sudoku9981.com/sudoku-puzzles
  Offers five difficulty levels.For each sudoku ,You can print with normal and candidate mode.

• PrintMySudoku

  http://www.printmysudoku.com/
  Many printable sudokus downloadable as PDF. New ones generated often.

• Prize Sudoku

  http://prizesudoku.com/
  Offers competitions for prizes. Traditional Sudoku, Godoku (letters) and Super Sudoku (16x16).

• Puzzle Bus

  http://www.puzzlebus.com/
  Offers a daily puzzle, books, software, and related merchandise. Also offers puzzles for syndication.

• Skill Sudoku

  http://skillsudoku.com/
  solve Sudoku puzzles online, 3 levels, interface a bit clunky

• Smarter Sudoku

  http://www.smartersudoku.com/
  A scratch pad to help you fill in a Sudoku puzzle. You still have to solve it yourself. Every day, you get three fresh Sudokus.

• Solve My Sudoku

  http://www.solvemysudoku.com/
  Solves puzzles based on inputted information.

• Solving Sudoku

  http://angusj.com/sudoku/hints.php
  Step by step guide to solving sudoku puzzles. Goes from basic to advanced techniques.

• Sudoku

  http://www.sudokutoday.com/
  Provides sudoku puzzles in easy, medium and hard levels with their solutions. Also provides facility for daily email sudoku newsletter.

• Sudoku

  http://www.sudoku.name/
  Play sudoku puzzles online for free.

• Sudoku

  http://www.sudoku.ws/
  Collection of printable grids, ordered by difficulty level. Solutions provided. Includes rules and solving methods.

• Sudoku

  http://www.calcudoku.org/sudoku
  Two daily sudoku puzzles (easy and medium), printable and solvable online.

• Sudoku

  http://www.sudoku.li/?lang=en
  Sudoku information and downloadable puzzles (PDF) in four levels and five languages (English, Spanish, German, French, Italian).

• Sudoku 9981

  http://www.sudoku9981.com/
  Solve Sudoku online, download printable puzzles at all levels, descrptions of strategies. Windows programs for solving and printing Sudoku, and for solving Samurai Sudoku.

• Sudoku As

  http://www.sudoku-as.com/
  Sudoku solver. Offers free puzzles at 3 levels of difficulty (easy, normal, hard) and a practical stopwatch.

• Sudoku enumeration

  http://www.afjarvis.staff.shef.ac.uk/sudoku/
  Several programs in different languages for analyzing possible Sudoku combinations.

• Sudoku Generator and Solver

  http://sudoku.becher-sundstroem.de/
  Sudoku generator, editor, solver. User registration and rankings.

• Sudoku Island

  http://sudokuisland.com/
  Online sudoku solving with a very clean interface.

• Sudoku of the Day

  http://sudokusoftheday.blogspot.de/
  Blog with 5 sudoku puzzles each day, from "very easy" to "extreme".

• Sudoku Online Solver

  http://sudoku.friko.net/
  Free online generator, solver, and helper. [English/French/Spanish/Polish]

• Sudoku Place

  http://sudokuplace.com/
  Offers daily puzzle in PDF format. Includes archive, FAQ, and a "dozen" variant.

• Sudoku Puzzle - Sudoque

  http://sudoque.com/play
  Solve Sudoku online with a very clean interface.

• Sudoku Puzzler

  http://www.sudokupuzzler.com/
  Free, daily Sudoku puzzles to print or play online.

• Sudoku Puzzles

  http://www.sudokupuzz.com/
  Free daily puzzles with five difficulty levels with their solutions. Also offers guide to solve Sudoku puzzles.

• Sudoku Puzzles

  http://isbooth.com/sudoku
  Solve Sudoku puzzles online, with interface targeted to tablets.

• Sudoku XL

  http://www.sudokuxl.com/
  4 levels of online playable Sudoku. Print up to 6 sudokus on one A4 sheet. Requires Flash.

• Sudoku-Puzzles.net

  http://www.sudoku-puzzles.net/
  Offers four difficulty levels. The puzzles can be solved online or downloaded as a PDF file. [English/German/French/Spanish/Dutch/Portuguese/Italian]

• SuDokuMate

  http://www.sudokumate.com/
  A SuDoku helper (not a solver) that replaces pencil and paper to aid solving.

• SudokusWeb

  http://www.sudokusweb.com/
  Free daily printable Sudokus. Also offers history, rules, and solving techniques.

• Sudoweb

  http://www.sudoweb.com/
  Free daily puzzles with five difficulty levels. Also offers printable e-book.

• The Daily Sudoku

  http://www.dailysudoku.co.uk/sudoku/rss.xml
  Today's daily Sudoku puzzle from www.dailysudoku.co.uk.

• The Guardian: So you thought Sudoku came from the Land of the Rising Sun...

  http://www.theguardian.com/media/2005/may/15/pressandpublishing.usnews
  Article by David Smith covering the puzzle's origins as "Number Place" by Dell Puzzle Magazine in New York in the 1970s.

• The Sudoku

  http://the-sudoku.com/
  solve Sudoku online, 5 levels

• Vegard Hanssen's page

  http://www.menneske.no/sudoku/eng/
  Offers a database of crafted puzzles, organized by difficulty. Also offers FAQ and forum. [Norwegian/English]

• Wikipedia: Sudoku

  http://en.wikipedia.org/wiki/Sudoku
  An encyclopedia entry describing the rules, history, strategies and variants of Sudoku. Notes that these are a type of "Latin square" which have been analyzed since ancient times.

• World Sudoku Championship

  http://www.wsc2006.com/
  Information on the 2006 World Sudoku Championship held in Italy. Includes background information, events, results and FAQ. [English, Italian]

• Yosmany.net

  http://sudoku.yosmany.net/
  Offers HTML to add a JavaScript-based puzzle to any site. [English/Spanish]

Related Categories

• Home > Games > Video Games > Puzzle > Sudoku

Other Languages

• Danish
• Italian
• German
• Dutch
• Czech
• Japanese
• Norwegian
• Russian
• Español

 

Home > Games > Puzzles > Brain Teasers > Sudoku

 

---

 

Thanks to DMOZ, which built a great web directory for nearly two decades and freely shared it with the web. About us