KataGo Played B15 Instead of F16 — And Lost 32% Win Rate

Black held a 42% winning position at move 99. Then KataGo chose B15. The correct move was F16, setting up a forcing sequence through H14 → B15 → C17 that keeps the game alive. Instead, the actual B15 collapsed Black's position to 10% instantly. This wasn't a slow positional drift. It was a single-move reading failure that turned a competitive endgame into resignation. The best line after F16 maintains tension and gives Black real chances. The game line ends the fight. Watch how one coordinate decision dismantles everything. #KataGo #Go #Baduk #Weiqi #GoAI #AIvsAI CC subtitles available in: English / 中文 / 한국어 / 日本語 Turn on CC for move-by-move AI commentary. 章节 / Chapters: 00:00 Opening 02:00 Move 58 · key moment 03:43 Move 72 · key moment 05:30 Move 84 · position estimate 05:35 Move 85 · key moment 07:13 Move 95 · key moment 08:36 Move 99 · key moment