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| 2015 || October || Achievement || The original AlphaGo becomes the first {{w|computer Go}} program to beat a human {{w|professional Go player}} without [[w:Go handicaps|handicaps]] on a full-sized 19×19 board.<ref name="googlego">{{cite web |url=http://googleresearch.blogspot.com/2016/01/alphago-mastering-ancient-game-of-go.html|title=Research Blog: AlphaGo: Mastering the ancient game of Go with Machine Learning |date=27 January 2016 |work=Google Research Blog}}</ref><ref name="bbcgo" />
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| 2015 || October || Game series release || Fan Hui versus Alphago AlphaGo is released in v13 version. It consists of five games.<ref name="Alphago's Games"/>
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| 2016 || January 28 || Research || AlphaGo's team publishes an article in the journal ''[[w:Nature (journal)|Nature]]'', describing the technical details behind the {{w|reinforcement learning}} approach used in AlphaGo.<ref name="The story of AlphaGo so far">{{cite web |title=The story of AlphaGo so far |url=https://deepmind.com/research/alphago/ |website=deepmind.com |accessdate=23 May 2019}}</ref>
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| 2016 || February || Game series release || Alphago AlphaGo versus Alphago AlphaGo is released in v18 version, . It consists of three games.<ref name="Alphago's Games"/>
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| 2016 || March || Achievement || {{w|AlphaGo versus Lee Sedol}} takes place as a five-game [[w:Go (game)|Go]] match between 18-time world champion {{w|Lee Sedol}} and {{w|AlphaGo}}. Played in {{w|Seoul}}, South Korea between 9 and 15 March 2016, AlphaGo wins all but the fourth game.<ref name="BBC News 13 March 2016">{{cite web | title= Artificial intelligence: Go master Lee Se-dol wins against AlphaGo program |url= https://www.bbc.co.uk/news/technology-35797102| author=<!--Staff writer; no by-line.-->|date= 13 March 2016| website= {{w|BBC News Online}} | accessdate= 13 March 2016 }}</ref> This is the first time a computer Go program beats a [[w:Go ranks and ratings|9-dan]] professional without handicaps.<ref name="leesedolwin">{{cite web |url=https://www.youtube.com/watch?v=vFr3K2DORc8&t=1h57m |title=Match 1 – Google DeepMind Challenge Match: Lee Sedol vs AlphaGo |date=8 March 2016}}</ref><ref>{{cite web |title=DeepMind’s AlphaGo Zero Becomes Go Champion Without Human Input |url=https://futureoflife.org/2017/10/18/deepminds-alphago-zero-becomes-go-champion-without-human-assistance/?cn-reloaded=1 |website=futureoflife.org |accessdate=5 April 2019}}</ref><ref>{{cite web |title=AI: How big a deal is Google's latest AlphaGo breakthrough? |url=https://www.techrepublic.com/article/ai-how-big-a-deal-is-googles-latest-alphago-breakthrough/ |website=techrepublic.com |accessdate=5 April 2019}}</ref><ref name="AlphaGov">{{cite web |title=AlphaGo |url=https://www.britgo.org/alphago |website=britgo.org |accessdate=5 April 2019}}</ref> The match is watched by over 200 million people worldwide.<ref name="AlphaGo China"/>
