If you would like to add a puzzle, please send us the details and we will consider it for inclusion. New puzzles are added from time to time, so remember to come back every now and then. If you get seriously stuck, feel free to email for hints and/or solutions.

1. The mysterious paper attack
2. A tale of two drivers
3. Which door for the star prize?
4. The fast snail
5. Crack the code
6. Dirty Foreheads