That ninth game with Kxd2, Jesus Christ what a game.
I was kind of unimpressed by the result specifically, since:
1. The hardware Alpha Go used was considerably better than Stockfish's
4 TPUs by alpha vs 64 threads by stockfish. You may be right, but given how stockfish (and any other chess engine for that matter) won't scale any further if you add more threads to it (diminishing returns and so on), this is a meaningless issue. With the hardware used, Stockfish is rated around 3400 ELO.
2. They put Stockfish at a disadvantage by not allowing it to use an opening book
The games I've seen, I can hardly blame the results on the lack of an opening book. It's evident from the examples that the alpha engine is in another altogether level. It toys
with stockfish with its beautiful positional play.
Now don't get me wrong, the level Alpha Go managed to reached in such a short time is a tremendous achievement, but the way they stacked the odds in their favor was kind of sickening.
Now don't get me wrong, but this kind of cynicism reminds me a lot when Kasparov lost to Deep Blue and went on on a rampage on how the conditions weren't perfect and so on.
That said, the most exciting thing to come out of this have been the openings that it chose to play. People are having some fits with it not choosing to play some openings (e.g. King's Indian).
Lo and behold, it plays the Berlin. Bwhahahaha.