South Korean professional Go player Lee Sedol reviews the match after the fourth match against Google's artificial intelligence program, AlphaGo, during the Google DeepMind Challenge Match on March 13, 2016 in Seoul, South Korea.
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March 14, 2016 9:23 AM EDT

A legendary Go player on Sunday scored his first win over Google’s AlphaGo after losing to the artificial intelligence program three straight times in the ancient Chinese board game.

Lee Sedol, 33, of South Korea, said he finally found weaknesses in the software as the best-of-five series comes to a close, the Associated Press reports. He said that he discovered AlphaGo lacked the ability to deal with surprises and had more difficulty playing with a black stone.

“This one win is so valuable and I will not trade this for anything in the world,” said Lee, who has won 18 international championships.

Read More: Google’s AI Just Did Something Nobody Thought Possible

The 2-year-old program, developed by Google DeepMind, is the first computer system to defeat a top Go player. The final match is set to take place Tuesday.

[AP]

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