expression, godan verb (-ru)
guess turns out right; prediction hits the mark
Idiomatic expression used when a speculation, hunch, or forecast proves correct, often in contexts like exams, investigations, or business forecasts.
試験に出る問題を山が当たって、いい点が取れた。
My guess about what would be on the exam turned out right, and I got a good score.
警察の読みが山が当たり、犯人はすぐに捕まった。
The police's hunch hit the mark, and the culprit was caught quickly.