Here is a place to post and discuss your proposed solutions to the puzzle of the hundred prisoners. So, don't read the comments if you want to avoid seeing solutions. If you want to post a solution and keep looking for more solutions, you can post a comment without reading the other comments, and come back later to discuss and compare solutions. There are lots of different and interesting ways to solve the problem. In a day or so, i'll post the solutions i know.
(If you post without logging in, i hope you'll do me the favour of letting me know who you are. I'm curious.)