Vladamir Kramnik won against him in the 2000 World Championship Match to win the title. As far as an individual loss goes, many grandmasters have beaten him. He just defeated them more frequently.
In February 1996 , IBM's chess computer Deep Blue defeated Kasparov in one game using normal time controls, in Deep Blue - Kasparov, 1996, Game 1 . However , Kasparov was still able to gain three wins and two draws and win the match .
Deep Blue, a IBM Supercomputer.
From what I remember it had the world "blue" in it.
'Deep Blue' was the first computer to beat a world chess champion. It defeated Garry Kasparov in 1997. There may well have been earlier computers that beat humans who did not play very well.
I knew it had to be one of the Polgar sisters, but had to look it up to see it was Judit.
'Deep Blue' : The 1996 match Game # White Black Result Comment 1 Deep Blue Kasparov 1-0 2 Kasparov Deep Blue 1-0 3 Deep Blue Kasparov ½-½ Draw by mutual agreement 4 Kasparov Deep Blue ½-½ Draw by mutual agreement 5 Deep Blue Kasparov 0-1 Kasparov offered a draw after the 23rd move. 6 Kasparov Deep Blue 1-0 Result: Kasparov - Deep Blue: 4-2
Chess Master Gary Kasparov lost the first game of a six-game match to IBM's chess computer, "Deep Blue" in 1996.
Chess.
The super-computer Deep Blue would persevere after all it defeated Kasparov even though Deep Blue had been bested by Kasparov on previous occasions .
'Deep Blue' , an IBM super computer , defeated Gary Kasparov in 1996 : Kasparov won the match 4-2 , losing one game , drawing in two and winning three .
'Deep Blue' :The 1997 rematch Game # White Black Result Comment1 Kasparov Deep Blue 1-02 Deep Blue Kasparov 1-03 Kasparov Deep Blue ½-½ Draw by mutual agreement4 Deep Blue Kasparov ½-½ Draw by mutual agreement5 Kasparov Deep Blue ½-½ Draw by mutual agreement6 Deep Blue Kasparov 1-0Result: Deep Blue-Kasparov: 3½-2½
Probably Bobby Fischer, Ruslan Pomarinov or Vladimir Kramnik. Not Kasparov, as he got beaten in a 2000 game by Kramnik.