On 10 February, 1996, Deep Blue, a chess-playing supercomputer developed by IBM created history by defeating a world chess champion, Gary Kasparov in game one of a six-game match. However, Kasparov later defeated the machine in 4 of the remaining 5 games thus winning the series. After that Deep Blue was heavily upgraded and played Kasparov again in May 1997 in which Deep Blue won the entire series against Kasparov.
However, this later ended up making a controversey as Kasparov accused IBM of cheating and demanded a rematch. IBM refused and dismantled Deep Blue.
