AlphaGo versus Ke Jie

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AlphaGo versus Ke Jie was a three-game Go match between the computer Go program AlphaGo Master and current world No. 1 ranking player Ke Jie, being part of the Future of Go Summit in Wuzhen, China, played on 23, 25, and 27 May 2017. [1] AlphaGo defeated Ke Jie in all three games. [2]

Contents

MatchDateBlackWhiteResultMoves
123 May 2017Ke JieAlphaGoW+0.5289 sgf
225 May 2017AlphaGoKe JieB+Res155 sgf
327 May 2017AlphaGoKe JieB+Res209 sgf
Result:
AlphaGo 3–0 Ke Jie

Background

At the time of the match Ke Jie was ranked 1st among all human players worldwide under Rémi Coulom's ranking system, and had held that position since late 2014. [3] Ke Jie was also ranked number one in the world under Korea Baduk Association's, [4] Japan Go Association's [5] and Chinese Weiqi Association's [6] ranking systems.

The version of AlphaGo in this match was AlphaGo Master, the one that defeated top pros in 60 online games, [7] using four TPUs on a single machine with Elo rating 4,858. [8] DeepMind claimed that this version was 3-stone stronger than the version used in AlphaGo v. Lee Sedol. [9] AlphaGo Master was actually the second best version that DeepMind had at the time, for it was already in possession of AlphaGo Zero, a version much stronger than the Master version; this can be known by the fact that Nature received their paper on AlphaGo Zero on April 7, before the games with Ke Jie. [8] DeepMind did not reveal the existence of AlphaGo Zero until the paper was published in Nature in October 2017.

Before the Future of Go Summit, AlphaGo Master defeated Ke Jie by three to zero during its 60 straight wins in the online games at the end of 2016 and beginning of 2017. [10]

Games

Summary

Google DeepMind offered $1.5 million winner prizes for this match while the losing side took $300,000 for participating in the three games. [11] [12] AlphaGo won all three games against Ke Jie. [13] [14] After the match between AlphaGo and Ke Jie, AlphaGo retired while DeepMind continued AI research in other areas. [15] AlphaGo was subsequently awarded a professional 9-dan title by the Chinese Weiqi Association. [16]

Game 1

On 23 May, AlphaGo (white) won by 0.5 points.

First 99 moves
Moves 100–199 (139 at Go bT.svg )
Moves 200–289

Game 2

The second game was played on 25 May. About 1 hour into the game, Demis Hassabis tweeted that according to AlphaGo's evaluations, Ke was playing perfectly. [17] However, Ke later lost ground on the lower part of the board. About 4 hours into the game, AlphaGo simplified the position, and it became clear that Ke was losing.

AlphaGo (black) won by resignation after move 155.

First 99 moves
Moves 100–155 (104/132/137 at Go wT.svg , 129/135 at 101)

Game 3

On 27 May, Ke Jie (white) resigned in game three, finishing the series with a 3–0 win for AlphaGo. At resignation, AlphaGo (black) had roughly an hour and a half of its time remaining, while Ke Jie had roughly 32 minutes left on the clock.

First 99 moves
Moves 100–199
Moves 200–209

Coverage

The match was barred from being live-streamed in China. [18] The game however has been covered in China both online and on national television via Zhejiang TV. [19]

See also

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References

  1. ↑ "柯洁迎19岁生日 雄踞人类世界排名第一已两年" (in Chinese). May 2017.
  2. ↑ Byford, Sam (27 May 2017). "AlphaGo retires from competitive Go after defeating world number one 3-0". The Verge. Retrieved 15 January 2022.
  3. ↑ "History of Go Ratings". June 2017.
  4. ↑ "韩版围棋世界排名：与欧洲版差别大 连笑进前三" (in Chinese).
  5. ↑ "世界棋士レーティング（囲碁）" (in Japanese).
  6. ↑ "中国围棋等级分(17.05.31)" (in Chinese). Qipai.org. 6 June 2017. Archived from the original on 26 October 2017. Retrieved 26 October 2017.
  7. ↑ "Alphago: Learning from Scratch". DeepMind's official website. 18 October 2017. Archived from the original on 19 October 2017. Retrieved 25 October 2017.
  8. 1 2 Silver, David; Schrittwieser, Julian; Simonyan, Karen; Antonoglou, Ioannis; Huang, Aja; Guez, Arthur; Hubert, Thomas; Baker, Lucas; Lai, Matthew; Bolton, Adrian; Chen, Yutian; Lillicrap, Timothy; Fan, Hui; Sifre, Laurent; Driessche, George van den; Graepel, Thore; Hassabis, Demis (19 October 2017). "Mastering the game of Go without human knowledge" (PDF). Nature . 550 (7676): 354–359. Bibcode:2017Natur.550..354S. doi:10.1038/nature24270. ISSN   0028-0836. PMID   29052630. S2CID   205261034. Closed Access logo transparent.svg
  9. ↑ "AlphaGo棋力比去年涨三子 柯洁想赢它可能只剩一招" (in Chinese). Sina. 25 May 2017. Retrieved 1 June 2017.
  10. ↑ "韩媒：AlphaGo比去年强大太多 近日三次战胜柯洁" (in Chinese). Sina.com. 11 January 2017. Retrieved 1 November 2017.
  11. ↑ "World No.1 Go player Ke Jie takes on upgraded AlphaGo in May". 10 April 2017.
  12. ↑ "Ke Jie vs. AlphaGo: 8 things you must know". 27 May 2017. Archived from the original on 14 December 2017. Retrieved 27 May 2017.
  13. ↑ "Revamped AlphaGo Wins First Game Against Chinese Go Grandmaster". 23 May 2017.
  14. ↑ "Google's AlphaGo Continues Dominance With Second Win in China". 25 May 2017.
  15. ↑ "After Win in China, AlphaGo's Designers Explore New AI". 27 May 2017.
  16. ↑ "中国围棋协会授予AlphaGo职业九段 并颁发证书" (in Chinese). 27 May 2017. Retrieved 28 May 2017.
  17. ↑ "Hassabis' tweet".
  18. ↑ Hern, Alex (24 May 2017). "China censored Google's AlphaGo match against world's best Go player" – via The Guardian.
  19. ↑ "【录像】浙江卫视解说柯洁对战Alphago专题节目". m.baidu.com. Retrieved 26 April 2021.

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