National Puzzle Day is celebrated each year on January 29th. It's not an official national holiday, but The Griddle tries to celebrate it each year by giving away some nice stuff, telling people on Facebook, and by posting a ton of nice free puzzles to solve!
Not sure what to do for the day? You could celebrate by challenging your friends to sudoku solving time trials, print out some of my free puzzles to use in classes as handouts, get puzzle game iPhone apps, enter puzzle solving contests, and more!
Thanks to all of the KoL players who entered the contest each year! The 2010 contest was a blast! You can grab the entrant list and see the winner at Google Docs.
In 2009, 48 players entered. Oryhara was picked as the winner. Here is the original entrant list on Google Docs. Skip List of Entrants from 2009
In 2008, 60 players entered. Flamizia was picked as the winner. Skip List of Entrants from 2008