The world’s top Go player notches a 2-1 comeback win against the most powerful Go engine, raising hope for human intellect in the AI era

Shin Jin-seo, the world's top-ranked Go player, reviews the game board following his victory over AI engine KataGo in the final game of a three-match series at The Korea Economic Daily headquarters in Seoul on July 21, 2026 (Photo by Hyuk Choi)

2026-07-21 15:02:25

Artificial intelligence

Shin Jin-seo, the world's top-ranked Go player, on Tuesday completed a dramatic comeback against the world’s premier artificial intelligence Go engine, KataGo, claiming a historic human victory over AI.

Shin, who holds the game's highest achievable rank of nine-dan, dealt KataGo a decisive 11.5-point defeat playing black in 221 moves in the series finale, which took three hours and five minutes.

The 26-year-old South Korean grandmaster became the first human to win an official series against a state-of-the-art Go engine under a two-stone handicap, a margin considered the absolute…