Bryan McAllister’s personal reference notebook
September 11, 2026Short & citedBlog
Civic Viewpoint.
A quiet encyclopedia with a personal desk
Kept by Bryan McAllister — short guides, clear facts, and the Canadian angle when it matters.
How It Works • AI

Deep Blue

Deep Blue was an IBM chess computer built to play competitive chess against top human opponents.

Updated September 11, 20261 min readCited sources

Deep Blue was an IBM chess computer that defeated world champion Garry Kasparov in 1997, marking a milestone in artificial intelligence. It used brute-force computation and parallel processing to evaluate about 200 million positions per second.

Origins and development

Deep Blue was developed by IBM and designed by computer scientist Feng-hsiung Hsu, building on earlier chess systems like ChipTest and Deep Thought. It was a custom IBM RS/6000 SP supercomputer built specifically for chess, using specialized hardware rather than general-purpose AI.

Historic match against Kasparov

In 1996, Deep Blue became the first computer to win a game against a reigning world champion under tournament conditions. In a 1997 six-game rematch, an upgraded Deep Blue defeated Kasparov 3.5–2.5, becoming the first computer to win a match against a world champion.

Technical approach and legacy

Deep Blue relied on brute-force search and parallel processing with 32 processors. After its victory, IBM retired the system; some components are now in museum collections. Deep Blue remains a landmark in computer chess and AI history.

In short

  • Deep Blue was the first computer to win a game against a reigning world champion in 1996.
  • It defeated Garry Kasparov in a 1997 rematch by 3.5–2.5.
  • It used brute-force search evaluating about 200 million chess positions per second.
  • After the match, Deep Blue was retired and parts went to museums.
Canadian angle

Deep Blue is relevant to Canadian readers as a landmark in artificial intelligence and computer history, and its legacy is often discussed in Canadian university and media coverage of AI and chess.

Quick questions

What is Deep Blue?
Deep Blue was an IBM chess-playing supercomputer designed to compete against human chess champions.
Did Deep Blue beat Garry Kasparov?
Yes. Deep Blue beat Kasparov in a 1997 six-game rematch by 3.5–2.5, after earlier winning a game in 1996.
How did Deep Blue evaluate chess positions?
It used brute-force computation and parallel processing to examine about 200 million positions per second.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Deep_Blue_(chess_computer)
    Supports: General description, designer, 1997 match result, and historical significance
  2. IBM — https://www.ibm.com/history/deep-blue
    Supports: Developer, 1997 match result, processing approach, retirement
  3. Chess.com — https://www.chess.com/terms/deep-blue-chess-computer
    Supports: Project origin, developer, dismantling and museum preservation
  4. Encyclopaedia Britannica — https://www.britannica.com/topic/Deep-Blue
    Supports: Overview, 1996 and 1997 results, technical configuration