You and all those who have upvoted your faux-authoritative answer are totally wrong (why are people trusting someone who got 27% in their maths exam to discuss the principles of advanced maths and computer science?!)
>>Intelligence is not about knowing stuff. Any twat can know stuff. Even more wankers can look stuff up, which is all this charade does
The very point of this ENTIRE project is that Go is NOT about knowing stuff or looking stuff up. That's why Go was chosen, because you CAN'T brute-force it. Even the top players have to rely on intuition and 'gut-feeling' rather than, say, chess where every move can be analysed and explained by the player and expert commentators.
The people who wrote this software didn't know how to beat the top player at Go. They designed some software to figure out the answer to that question. More than likely, they actually do not know how it works themselves - that's a key feature of neural networks.
So this is entirely ground-breaking and very cool. Not specifically relating to Go, but as proof of progress in machine learning and neural networks. Software that figures out how to solve the task given it is pretty much a definition of one part of AI.