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Games: Puzzles: Brain_Teasers: Sudoku:
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- Christiaan Olie - Personal page describing Sudoku, rules, strategies, and offering puzzles to print. [Dutch/English].
- 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..
- Daily Sudoku - Offers a different printable puzzle each day. Also includes solutions and FAQ..
- Dan Rice's Sudoku Blog - Weblog 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..
- Free Sudoku Puzzles - Offers a free javascript version of the sudoku game..
- 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..
- The Heebie Su Doku Site - Offers a glossary of terms, links to puzzles and variants, and tips for solving..
- 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..
- Play Sudoku - Flash version of the Sudoku game. Also offers solution..
- 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..
- Scanraid LTD Search Technologies - Sudoku Solver by Andrew Stuart. Shows the logic behind solving sample games square by square..
- Simple Sudoku Solver - JavaScript brute force solver..
- Sky One - Information on UK-based cellular provider's world-record largest Sudoku puzzle and accompanying contest..
- Solve My Sudoku - Solves puzzles based on inputted information..
- Solving Sudoku - Step by step guide to solving sudoku puzzles. Goes from basic to advanced techniques..
- Sudoku - Provides sudoku puzzles in easy, medium and hard levels with their solutions. Also provides facility for daily email sudoku newsletter..
- Sudoku - Free daily puzzle with solution. Includes archive of past puzzles..
- Sudoku - History, instructions, variants and puzzles in four difficulty levels (PDF format). [German/French/English/Spanish/Italian].
- Sudoku - Generates and solves classic and X-Sudoku Problems. Diverse options and an integrated help facility makes this program best of class..
- Sudoku Addict - Offers printable grids and solution walkthroughs..
- Sudoku enumeration - Several programs in different languages for analyzing possible Sudoku combinations..
- Sudoku Online - Includes Sudoku tips and strategies as well as a downloadable game and a 3D Sudoku puzzle..
- Sudoku Online Solver - 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 - Free daily puzzles with five difficulty levels with their solutions. Also offers guide to solve Sudoku puzzles..
- 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-Cracker - Only creates puzzles with a "unique solution". The built-in generator has six different levels of difficulty and can generate many (millions) different puzzles. All puzzles can be printed, exported, saved and opened again..
- SuDokuMate - SuDokuMate is a SuDoku Helper (not a Solver) that replaces pencil and paper to aid solving..
- Sudoku-san - Free daily puzzles with four difficulty levels. Also offers a solving assistant and downloadable e-book collections for purchase..
- SudokusWeb.com - Free daily printable Sudokus. Also offers history, rules, and solving techniques. [English/Spanish/French/Catalan/German/Portuguese].
- Sudoweb - Free daily puzzles with five difficulty levels. Also offers printable e-book..
- The Times Sudoku - Daily sudoku and killer sudoku puzzles from The Times newspaper, 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. Notes that these are a type of "latin square" which have been analyzed since ancient times..
- World Sudoku Championship - Information on the 2006 World Sudoku Championship held in Italy. Includes background information, events, results and FAQ. [English, Italian].
- 9x9, 6x6 and Samurai Sudoku - Offers classic Sudoku and variants, as well as an online solver..
- Yosmany.net - Offers HTML to add a JavaScript-based puzzle to any site. [English/Spanish].
- My Days Are Numbered - An article by Seth Stevenson offering a brief overview of Sudoku. (May 31, 2005).
- The Economist: Do you sudoku? - Article on the puzzle's popularity in the United Kingdom and elsewhere. (May 19, 2005).
- The Guardian: So you thought Sudoku came from the Land of the Rising Sun... - Article by David Smith covering the puzzle's origins as "Number Place" by Dell Puzzle Magazine in New York in the 1970s. (May 15, 2005).
- The Guardian: Sudoku fever grips UK newspaper readers - By Stephen Brook. Article covers how the UK craze got started. (May 10, 2005).
- BBC News: The puzzling popularity of Su Doku - Article by Paula Dear. Covers history in Japan and the UK and compares to the Rubik's cube craze of the 80s. (April 22, 2005).
- The Daily Sudoku - Today's daily Sudoku puzzle from www.dailysudoku.co.uk. [RSS].
- Sudoku Madness - Seven days of daily puzzles. [RSS].
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