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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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Play Sudoku - http://www.bin-co.com/javascript/sudoku/
JavaScript-based Sudoku, available for syndication on other sites. |
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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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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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BrainBashers - http://www.brainbashers.com/sudoku.asp
Offers a daily Sudoku with six levels of difficulty, with an archive of old puzzles and an interactive assistant. |
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Count to Nine - http://www.counttonine.com/
Offers five difficulty levels, timer, solution, and printable view. |
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Su-Doku.net - http://www.su-doku.net/
Offers daily puzzle, downloadable games, and instructions. |
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Goobix.com - http://www.goobix.com/games/sudoku/
Offers up to 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] |