February 10, 1996
World chess champion Garry Kasparov loses a game to the computer Deep Blue during a match set up using standard championship rules. This was the first time a computer defeated a world chess champion using these rules (although chess computers had been kicking my butt since the 1980’s). Kasparov went on to defeat Deep Blue 4-2 during this match. However, he lost to Deep Blue a year later, marking the first time a computer defeated a world chess champion in a match.