Stuck on Sudoku

I've been spending too much of my scarce free time solving Sudoku puzzles.  I guess you can include me in the Sudoku craze sweeping the USA.  The rules are simple: Every row, column, and 3x3 box must contains the digits 1 through 9 only once.

I'm going use this post to store most of my Sudodu related links.

1. Show me the puzzles.  WebSudoku provides a seemingly endless supply of sudoku puzzles ranging from easy to evil.
2. Sudoku hints and tips. Solving Sudoku Document [PDF] by Michael Mepham from Sudokulist web site [www.sudoku.org.uk]
3. Books. Amazon provides many titles covering sudoku.

Enjoy.

Chris