Sudoku Puzzles

A selection of links to other sites for Sudoku enthusiasts:

Daily Mail Sudoku: Three print-and-play puzzles daily (not solvable online) at different levels of difficulty.
Financial Times Sudoku: FT.com provides a Sudoku puzzle every day from Monday to Saturday.
Sudoku on eBay.co.uk: Find Sudoku books, gadgets, merchandise etc. on eBay - there are some bargains to be had.
Sudoku.org.uk: Michael Mepham's excellent site for Sudoku enthusiasts, with many puzzles (and variants), Sudoku help, forums, and much more.
The Times Sudoku: A good collection of Sudoku puzzles from The Times and The Sunday Times.
Wikipedia Article on Sudoku: An online encyclopedia entry describing the rules, history, strategies and variants of Sudoku.