South Korean Go master Lee Se-dol has defeated the artificial intelligence program HanDol in the first game since his retirement series in Seoul. He was given an advantage of two stones, and won thanks to an early blunder by HanDol. Lee is an 18-time world champion of Chinese board game Go. He is best known for defeating Alpha-Go of Google's Deep-Mind in 2016. Lee remains the only human Go player to have defeated the AI system.
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