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SudokuWiki - Main Page
Strategies for Sudoku, Sudoku X, Killer Sudoku and Jigsaw Sudoku - and the home of logical puzzle maker Andrew Stuart.
http://www.sudokuwiki.org/Main_Page
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Sudoku Strategy Guide
Sudoku strategy guide that covers the techniques used to solve Sudoku puzzles, with detailed graphics and thorough explanations.
http://www.chessandpoker.com/sudoku-strategy-guide.html
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Sudoku of the Day
Sudoku of the Day - Sudoku Techniques
https://www.sudokuoftheday.com/techniques/
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Example Sudoku - Hard Level
Example Sudoku - Hard Level - 27 Givens - Step-by-Step Solution - By Web Sudoku
http://www.websudoku.com/images/example-steps.html
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6 Ways to Solve a Sudoku
How to Solve a Sudoku. Sudoku is a numbers puzzle that has swept the world. It is very fun to play, but can be tricky and confusing at first. The objective of the puzzle is to put the numbers 1-9 in every row, column, and 3x3 square block....
http://www.wikihow.com/Solve-a-Sudoku
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Sudoku Solving Techniques
Sudoku Solving Techniques - Tips on Solving Sudoku Puzzles
https://www.kristanix.com/sudokuepic/sudoku-solving-techniques.php
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Sudoku Tips - Play Free Sudoku
Sudoku Tips - Play Free Sudoku, a Popular Online Puzzle Game
http://www.sudoku.com/how-to-play/
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Sudoku Tips - Learn How To Solve Sudoku Puzzles
Illustrative Sudoku tips teach you how to solve difficult Sudoku puzzles and games. Learn techniques that will make you a pro.
http://www.sudokuessentials.com/sudoku_tips.html
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Sudoku Kingdom
Provides Sudoku puzzles for printing, or to play online. Select a puzzle by difficulty level, time constraints, or simply print out a puzzle to take with you on a trip.Brain training game.
http://www.sudokukingdom.com
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Sudoku - Puzzles and Games
Sudoku - Puzzles and Games - NYTimes.com
http://www.nytimes.com/crosswords/game/sudoku/easy?page=sudoku
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Play Free Sudoku - a Popular Online Puzzle Game
Play Sudoku, one of the most popular puzzle games of all time. Our free Sudoku is the most fun brain game you will ever play online.
http://www.sudoku.com
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Sudoku - Wikipedia, the free encyclopedia
Completed puzzles are always a type of Latin square with an additional constraint on the contents of individual regions.
https://en.wikipedia.org/wiki/Sudoku
