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AlphaGo

AlphaGo

Computer program developed by google deepmind to play the board game Go.

AlphaGo is a computer program that plays the board game Go. It was developed by Alphabet Inc.'s Google DeepMind in London.

In October 2015, AlphaGo became the first computer Go program to beat a human professional Go player without handicaps on a full-sized 19×19 board. In March 2016, it beat Lee Sedol in a five-game match, the first time a computer Go program has beaten a 9-dan professional without handicaps. Although it lost to Lee Sedol in the fourth game, Lee resigned in the final game, giving a final score of 4 games to 1 in favour of AlphaGo. In recognition of the victory, AlphaGo was awarded an honorary 9-dan by the Korea Baduk Association. The lead up and the challenge match with Lee Sedol were documented in a documentary film also titled AlphaGo, directed by Greg Kohs. It was chosen by Science as one of the Breakthrough of the Year runners-up on 22 December 2016.

At the 2017 Future of Go Summit, AlphaGo beat Ke Jie, the world No.1 ranked player at the time, in a three-game match. After this, AlphaGo was awarded professional 9-dan by the Chinese Weiqi Association. After the match between AlphaGo and Ke Jie, AlphaGo retired while DeepMind continues AI research in other areas.

AlphaGo uses a Monte Carlo tree search algorithm to find its moves based on knowledge previously "learned" by machine learning, specifically by an artificial neural network (a deep learning method) by extensive training, both from human and computer play.

Timeline

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People

Name
Role
Related Golden topics

Demis Hassabis

DeepMind

Lee Sedol

Further reading

Author
Title
Link
Type

Demis Hassabis et al.

Mastering the game of Go with deep neural networks and tree search

Academic paper

Documentaries, videos and podcasts

Title
Date
Link

Match 1 - Google DeepMind Challenge Match: Lee Sedol vs AlphaGo

Mar 9, 2016

Match 2 - Google DeepMind Challenge Match: Lee Sedol vs AlphaGo

Mar 10, 2016

Match 3 - Google DeepMind Challenge Match: Lee Sedol vs AlphaGo

Mar 12, 2016

Match 4 - Google DeepMind Challenge Match: Lee Sedol vs AlphaGo

Mar 13, 2016

Match 5 - Google DeepMind Challenge Match: Lee Sedol vs AlphaGo

Mar 15, 2016

Companies

Company
CEO
Location
Products/Services

DeepMind

Demis Hassabis

London

AI research and application