If machines can beat us at games, does it make them more intelligent than us?

The year 1997 saw the ultimate man versus machine tournament, with chess grandmaster Garry Kasparov losing to a machine called Deep Blue. Earlier this year, in what was hailed as another breakthrough in artificial intelligence (AI) research, Google's AlphaGo defeated a professional Go player. Go is an ancient Chinese board game that has hitherto been difficult for a computer to play at a high level due to its deceptively complex gameplay. Where chess is played on a board of 8 x 8 squares, Go is typically played on a board of 19 x 19 squares. These are all worthy engineering achievements, but what does it mean for research into genuine machine intelligence and the predicted artificial intelligence that will surpass human intelligence?