The final Lee Sedol vs. AlphaGo match is about to start

By nabbing three straight wins to kick off a five match series, the Google DeepMind AI program AlphaGo established itself as a more than worthy adversary for legendary Go player Lee Sedol. Sedol rebounded, winning the fourth match Sunday after he pushed AlphaGo to make a mistake on move number 79. Even after the loss, AlphaGo has received an honorary “ninth-dan” rating (the same rating that Lee has earned as one of the game’s top players) by South Korea’s top Go federation, the Korea Baduk Association. Now, the two will square off for a fifth and final match at the Four Seasons hotel in Seoul. The match is scheduled to begin at midnight ET (you can watch the stream here or embedded below), and it will be interesting to see who maintains an edge after four games.

Game 5 starting in 30 mins: going to be really exciting to see if Lee Sedol can exploit the weakness in #AlphaGo’s play he found in game 4

— Demis Hassabis (@demishassabis) March 15, 2016

Taken a quick look at the logs: AlphaGo gave a probability of <1 in 10000 for Lee’s brilliant move 78, so AG found this move very surprising

— Demis Hassabis (@demishassabis) March 15, 2016

Mistake was on move 79, but #AlphaGo only came to that realisation on around move 87

— Demis Hassabis (@demishassabis) March 13, 2016

Source: Google Asia Pacific Blog