World No. 1 Go player Shin Jin-seo falls to KataGo in series opener despite two-stone handicap 작성일 07-17 71 목록 <strong class="media_end_summary">The world’s top-ranked Go player lost the first game of a three-match series to AI program KataGo even with an estimated 18-point lead from the start of the match.</strong><div class="image"><br> <span class="end_photo_org"><img src="https://imgnews.pstatic.net/image/640/2026/07/17/0000091367_001_20260717192415160.jpg" alt="" /><em class="img_desc">Go world No. 1 Shin Jin-seo competes in the opening game of a three-match series against the AI program KataGo on July 17. NEWS1</em></span><br></div><br><br>Shin Jin-seo, the world's top-ranked Go player, suffered a defeat against AI program KataGo despite receiving a two-stone handicap in the opening game of a three-match series on Friday.<br><br>The match marks the 10th anniversary of Go master Lee Se-dol's historic match against AlphaGo, in which Lee became the only human to defeat the AI in one of five games.<br><br>Shin, playing as Black, resigned after 245 moves against KataGo, which played as White, in the first game.<br><br>The three-game series adopted a two-stone handicap in recognition of the AI's overwhelming computational capability. Under the handicap, the human player begins with an estimated advantage of 18 points.<br><br>At a media day event on Tuesday, Shin said he chose the two-stone handicap because "humans simply cannot beat AI in an even game, while I think three stones would give me the advantage."<br><br>"I'll avoid fighting as much as possible and try to protect the 18-point advantage until the end," he added.<br><br>But Shin's defensive strategy was thrown off by the AI's second move. Instead of approaching Black's stone in the upper-right corner or extending along the right side — which would be moves commonly seen in human play — KataGo placed a White stone in an unconventional three-space approach.<br><br><div class="image"><br> <span class="end_photo_org"><img src="https://imgnews.pstatic.net/image/640/2026/07/17/0000091367_002_20260717192415207..jpg" alt="" /><em class="img_desc">Shin Jin-seo sits across a Go board during his match against KataGo on July 17, with the AI's moves relayed by Go player Lee Dan-bi. KOREA BADUK ASSOCIATION</em></span><br></div><br><br>"That move alone may have been about a one-point mistake," Shin said after the game. "But that single move made all of my preparation over the past month useless. It caught me off guard from the beginning, and I don't think I was ever able to play the game the way I wanted."<br><br>Despite the early surprise, Shin tried to hold on to his two-stone advantage through the middle of the game. But during a fierce battle along the lower side of the board, KataGo gained the upper hand. On Black's 103rd move, Shin attempted to split White's central and lower-side groups. At that moment, the win probability swung in White's favor for the first time.<br><br>KataGo then precisely struck a vital point in Black's lower-right corner formation with a second-line placement, capturing five Black stones.<br><br>Shin made one final attempt with a ko fight along the top side of the board, but the gap only widened. When he resigned after 245 moves, the win probability showed White ahead by 28.8 points with 1 hour 50 minutes and 59 seconds remaining out of the game's five-hour time limit.<br><br>Shin received only the 50 million won ($33,650) appearance fee after losing the opening game. A victory would have earned him an additional 50 million won as a win bonus.<br><br>The player's second game against KataGo will be played on Sunday, and the third game on Tuesday.<br><br> 관련자료 이전 연타석 홈런이 화면 밖에서…잠실 중계 22분간 '중단' 왜? 07-17 다음 인간계 최강 신진서, 바둑 인공지능 카타고에 2점으로도 패배 07-17 댓글 0 등록된 댓글이 없습니다. 로그인한 회원만 댓글 등록이 가능합니다.
