This is of course all very, very impressive, but it would be great to see more details on this. We are told AZ only started with the basic rules. What was included in the "basic rules"? How were they codified? The engine looks at 80.000 positions at second, so obviously it has some evaluation function. What is the position evaluation function? Presumably it was codified in some way in the beginning, and then got improved by the training period? It would be very interesting to see the first 100 games, or so, the engine it played against itself.