Prize Puzzles are special puzzles on the site that are sponsored by a company and come with a prize drawing after solving them. You'll know when you see one; the icon next to the puzzle will be a gift box and it's page will have some extra information on it.
All you have to do is solve a puzzle within 1 week of it being posted on The Griddle, then leave a comment with your answer. Don't worry, comments will be hidden until that week is up. At 11:59 PM on the final day (or shortly thereafter) the entries with correct answers will go into a drawing for a special prize!
Prizes so far have included everything from jars of salsa to iPhone apps to in-game items for Kingdom of Loathing! If you're already visiting to solve puzzles, give some prize puzzles a try and see if you can win!
If you want to donate a prize and become a sponsor for a Prize Puzzle, contact me at davmillar@gmail.com. Here are just a few of the sponsors for Prize Puzzles so far:
Martian Salsa The Griddle Toyzzle
You can find current and past prize puzzles on the site under the tag prize.
For National Puzzle Day and other random days, I've created Kingdom of Loathing themed puzzle contests for KoL players. The prize? A coveted Mr. Accessory.
Note: The Griddle is not affiliated with Kingdom of Loathing.
In August 2010, Logic Masters India held the sudoku test "Sampler Platter" featuring 18 sudoku puzzles I authored. Thanks to all who aprticipated in "Sampler Platter". I'm very pleased to hear that the puzzles were enjoyed by many. If you didn't participate, you may still get the puzzles over at the LMI website to try at your leisure.
Each week, one of my puzzles is themed after a book from Trapdoor Books. This summer, readers can play the Trapdoor Books "Summertime Puzzle Contest" for a chance at free books or an Amazon Kindle, B&N Nook or Sony Reader Touch. Check out the Trapdoor Books site for more info.