This is totally fascinating, but...
The possibilities are finite, the rules are known, and the win condition is a binary outcome.
I am weary of headlines declaring "the end" basically daily. It's not even whether or not it's the end, it's whether or not we are understanding what the current state of AI is. Totally impressive! However, I would like to hear that, say, Watson is actually doing cancer research, instead of parroting the opinions of the staff of Memorial Sloan Kettering.
Then we'll be at the end! Or the beginning.