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

People

Name
Role
LinkedIn

Demis Hassabis

Lee Sedol

Further reading

Title
Author
Link
Type
Date

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

Demis Hassabis et al.

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

News

Title
Author
Date
Publisher
Description
Stephanie Mlot
November 28, 2019
Geek.com
Former Go champion Lee Se-dol has retired from professional competition--because artificial intelligence. The South Korean Go master gained global fame in 2016 as the only human to defeat DeepMind's AlphaGo computer program. Now ...
Jim Edwards
November 28, 2019
Business Insider
He gets up from his chair and walks away from the board!
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