I remember it was pretty short, only 20 pages or so. It was about an alternative ending to the cold war with super computers fighting against each other with one supercomputer winning and torturing humanity for eternity. The story was about a group of people trying to escape or defeat this super computer, I think they made a bet with it? I don't quite remember in detail, but it ended without a happy ending, the last person was turned into some horrible fleshy mess still conscious for eternity but unable to move.