godan verb (-su), transitive verb
Slang term derived from 詰める, used especially in shogi for cornering the opponent's king, and by extension for trapping someone in a difficult position.
See also: 詰める
将棋で相手の王を詰ますのが気持ちいい。
It feels good to checkmate the opponent's king in shogi.
彼は巧みな質問で相手を詰ました。
He cornered his opponent with skillful questions.