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Web Sudoku - http://www.websudoku.com/
Free puzzles with difficulty levels ranging from easy to evil. Provides print and online syndication. |
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Sudoku Puzzles - http://sudoku.com.au/
Daily puzzles offered at four difficulty levels, available for play online or printed out. Includes rules and archives. |
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Sudoku Hints - http://www.sudokuhints.com/
Offers daily web-based puzzles with five difficulty levels. Includes solver, helper, and XML feed. |
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Play Sudoku - http://www.geocities.com/binnyva/code/javascript/sudoku/
JavaScript-based Sudoku, available for syndication on other sites. |
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Sudoku Fun Puzzles - http://www.sudokufun.com/
A website representation of Sudoku, the broad sheet newspaper puzzle imported from Japan. Leaderboard lets players compare completion times. |
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Su-Doku.net - http://www.su-doku.net/
Offers daily puzzle, downloadable games, and instructions. |
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Fiendish Sudoku - http://www.fiendishsudoku.com/
Free daily sudoku puzzles at five difficulty levels. Online solving grid with hints and step-by-step solutions. |
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Number Logic - http://www.number-logic.com
Offers a new timed game daily, with a validator and four difficulty levels. |
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Sudoku League - http://www.sudoku-league.com/
League of online competitors. Scoreboard, rules, FAQ, hall of fame, and instructions. [English/Czech] |
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Sudoku Central - http://www.sudokucentral.com/
Offers daily puzzle for printing. Also includes archive, online solver, and solving tips. |