一いち番ばん勝しょう負ぶ

noun

single-round contest; one-shot game; make-or-break match

A contest or game decided by a single round, bout, or attempt, often with a do-or-die feel. Used in sports, games, and metaphorical situations.

• 決けっ勝しょうは一いち番ばん勝しょう負ぶで行おこなわれた。