Here are the 10 challenge rules:

1. Anybody may enter any challenge, as many times as they like, so long as all code is written in DBPro.

2. No external media is allowed – for further explanation about this rule see here.

3. The person who wins the current challenge becomes the next challenge setter.

4. The challenge setter is the judge for the current challenge, and must select a winner and a runner up.

5. The challenge setter may enter, but may not judge him/herself the winner.

6. The challenge setter will set the time limit according to difficulty. The challenge setter may extend the deadline by 24 hours if there is a very good reason, but extensions must not be made during the final 24 hours of the challenge.

7. If nobody enters within the time limit, the challenge setter must set a new challenge.

8. If the challenge setter fails to judge entries or set a new challenge within 24 hours of the deadline, responsibility for judging and setting a new challenge will pass to the previous runner up. If that person also fails to act promptly, entrants may vote for a winner and new challenge.

9. You may use code from any other entries within the challenges thread for your current entry, so long as you improve upon it in some way and give credit.

10. After having judged the current challenge, it would be most appreciated if the challenge setter would gather all of the code entries of the current challenge into text files, with the name of each entrant in each file name, and email them to Nicholas Thompson for cataloguing into the challenge database at www.dbp-site.com