Man: 0, Machine: 1 (or, Go Neural Networks!)

The A.I. AlphaGo has won the first round of a five round match against go grand master Lee Sedol. Until now, two decades after Deep Blue beat Gary Kasparov in chess, the best go-playing computers were no better than human amateurs. The game of go is more complex than chess, just as chess is more complex than tic-tac-toe. Go has simpler rules, but the board is larger and more freely used, and the state of the game is more difficult to judge at any given time. AlphaGo uses neural networks extensively trained to be able to strategize at that level. There are four more games ahead (all streamed live on YouTube) to see if AlphaGo's victory over Lee was a fluke, but it is clear it is playing at a professional level.