This blog has a really interesting assortment of articles on mathematics and programming. You can use the tags to your right to find topics that interest you, or you may want to have a look at
You can also subscribe to the blog newsletter.
Alice and Bob are going to be locked away separately and their faith depends on their guessing random coin tosses!
I find the problem in this post rather fun to think about because it is a problem about a game that can actually be played between two players.