Deep Blue defeats Kasparov
A machine beats a reigning world champion for the first time

On 11 May 1997 IBM's Deep Blue beat world chess champion Garry Kasparov 3½–2½. It was the first time a computer defeated a reigning world champion in a match under classical time controls.
Wikipedia (English) · 20th century
Meanwhile around the world (±25 years)
Whole world
- 1980 Smallpox declared eradicated — 17 years earlier
- 2008 Global financial crisis — 11 years later
Europe
- 1989 Invention of the World Wide Web — 8 years earlier
- 1989 Fall of the Berlin Wall — 8 years earlier
- 1991–2001 Yugoslav Wars — 6 years earlier
- 1992 Maastricht Treaty — 5 years earlier
- 2002 Euro notes and coins — 5 years later
Eastern Europe & Russia
- 1980 Solidarity — 17 years earlier
- 1985–1991 Perestroika — 12 years earlier
- 1986 Chernobyl disaster — 11 years earlier
- 1989 Revolutions of 1989 — 8 years earlier
- 1991 Dissolution of the Soviet Union — 6 years earlier
Middle East
- 1979 Iranian Revolution — 18 years earlier
- 1980–1988 Iran–Iraq War — 17 years earlier
- 1990–1991 Gulf War — 7 years earlier
Africa
- 1974 Lucy is discovered — 23 years earlier
- 1983–1985 The Ethiopian famine — 14 years earlier
- 1994 End of apartheid in South Africa — 3 years earlier
Asia
- 1975–1979 The Khmer Rouge and the Cambodian genocide — 22 years earlier
- 1989 Tiananmen Square protests — 8 years earlier
- 1991 Eruption of Mount Pinatubo — 6 years earlier
- 2004 Indian Ocean earthquake and tsunami — 7 years later
- 2011 Tōhoku earthquake and tsunami — 14 years later
Oceania
- 1992 The Mabo decision — 5 years earlier
Alive at the time
- Nelson Mandela (aged 79)
- Neil Armstrong (aged 67)
- Mother Teresa (aged 87)
- Ronald Reagan (aged 86)
- Edmund Hillary (aged 78)
- Jimmy Carter (aged 73)
- Fidel Castro (aged 71)
- Elizabeth II (aged 71)
- Gabriel García Márquez (aged 70)
- Mikhail Gorbachev (aged 66)