computer chess
Chess computers were one of the first step towards developing a form of AI. Here's a brief history.
In 1997 Garry Kasparov, then World Champion, lost an entire chess match to the IBM supercomputer Deep Blue, and it is only a matter of time before the machines become absolutely unbeatable. But the human brain, as Lewis Dartnell explains, is still able to put up a good fight by exploiting computers' weaknesses.
Chess world champion Gary Kasparov has been defeated by Deep Blue, the world's highest ranking chess computer.