By Barbara Qualmann This week a computer finally managed to beat the top human exponent of the Japanese game of Go. It has been over 20 years since world champion Gary Kasparov lost a single game to a computer in 1996. A year later he lost an entire series. This week world champion Go player Lee Sedol lost his first game, the first of a series of 5, to the AlphaGo program running on Google DeepMind. Go is based on placing stones on a 19 by 19 grid, and so a board has 361 factorial moves possible, which amounts to infinitely more potential moves than chess. It has only been the resurgence of Artificial Intelligence, as a viable technology, and…