The unbelievable solution to the 100 prisoner puzzle.

Yes, here is the follow-up video: Order Alex Bellos’s book now and get a limited-edition ’Matt verified’ copy. Thanks to Matt Scroggs and the Chalkdust folks for helping organise the volunteers and the maths. Cheers to the Ri for letting us film in their building. We have free Think Maths work sheets for any teachers who want to use the prisoner puzzle in their lessons. CORRECTIONS - Yes, it seems we can’t spell success successfully. - Turns out we do know there is a limit. - Let me know if you spot any other mistakes! Thanks as always for Jane Street being my principal sponsor. Thanks to my Patreon supporters who help make these videos possible. Here is a random subset: Everett Chouinard Lucie Christian Martel Joost Smits Rhys Llewellyn Anthony Allan Support my channel and I can make more maths videos: Filming and editing by Trunkman Productions Music by Howard Carter Design by Simon Wright MATT PARKER: Stand-up Mathematician Website: Maths book: Nerdy maths toys: