Here's a paper on the subject: http://www.ocf.berkeley.edu/~wwu/papers/100prisonersLightBulb.pdf http://www.ocf.berkeley.edu/~wwu/papers/100prisonersLightBul..

Here's a paper on the subject: http://www.ocf.berkeley.edu/~wwu/papers/100prisonersLightBulb.pdf http://www.ocf.berkeley.edu/~wwu/papers/100prisonersLightBul... It includes my answer :)