IGS 10d vs 8d: KataGo Reveals Move 151 Collapse (98→2%)

Two high-dan players battle it out on IGS in front of 19 live spectators. Black dominates for 150 moves, building a 98% win rate — then plays R10 at move 151. KataGo's post-game analysis shows Q9 was the only move, and explains why a human would miss it in that position. One mistake, game over. White takes it by resignation at move 210. If you were Black with a 98% advantage, you'd probably play the same way.