IBM Deep Blue defeats world chess champion Garry Kasparov
IBM's Deep Blue won a six-game rematch against reigning world champion Garry Kasparov 3.5–2.5, the first defeat of a world champion by a computer under standard tournament time controls.
Key facts
- Final game played 11 May 1997 in New York
- Score: 3.5–2.5 to Deep Blue
- Used massively parallel brute-force search with custom chess chips
- Kasparov had won the first match in 1996 (4–2)
What happened
In a rematch in New York, Deep Blue beat Kasparov, winning the decisive sixth game.
Why it matters
A landmark public moment for AI, though achieved by specialized search rather than learning — a contrast with AlphaGo/AlphaZero two decades later.
Changelog
- 2026-09-29: created
Related events
Sources (2)
id: 1997-05-11-deep-blue-kasparov · updated 2026-09-29 · open in the interactive timeline