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Useful Sudoku Web Sites

Here is a set of references to external web sites that are sources of useful information about Sudoku. We are not responsible for the accuracy of information held on these sites. If you'd like to suggest other useful sites, please Contact us. Our Sudoku news page has links to all the latest news about Sudoku.

Background

The Sudoku Phenomenom An article tracing the history and development of the puzzle.
Wikipedia Entry A good guide to the puzzle and its history.
Nikoli Magazine Information from the creators of the modern puzzle.
Puzzle Site - a background history for Sudoku.
Background news story about the rise of the puzzle
Japanese Puzzles including number and crossword puzzles
Open Directory entry for Sudoku, as with many directories, some are good sites some are out-of-date and some have nothing to do with Sudoku.
Analysis Some mathematical analysis into the actual number of possible puzzles.

Hints and Tips

Sudoku Strategy Some of the more complex puzzle solving strategies explained.
Solving Sudoku Detailed step by step solution of some puzzles.
Topix News stories about Sudoku.
Sudoku Solution Hints Good introduction to the various strategies for solving puzzles including the X-Wing strategy.

Other Sites

Personal Site A Sudoku addict's view of the puzzle with some interesting background
Daily Sudoku Provides a daily puzzle but no solver
Sudoku Solvers A range of puzzle solvers
The Times Daily puzzles of various types and active online community

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