also: よいしょうぶ
noun
close contest; even match; worthy opponent
Describes a competition or comparison where the participants are nearly equal in skill or quality, making the outcome uncertain and exciting. Often used in sports, games, or any competitive situation.
昨日の試合は本当にいい勝負だった。
Yesterday's game was a really close contest.
彼とチェスをすると、いつもいい勝負になる。
When I play chess with him, it's always an even match.
互角 is a more formal, Sino-Japanese term meaning 'equal' or 'evenly matched', often used in analytical contexts. いい勝負 is a colloquial expression that emphasizes the excitement of a close contest.
接戦 specifically refers to a 'close battle' or 'tight game', focusing on the narrow margin. いい勝負 is broader and can describe any evenly matched situation, not just a nail-biter.
Compound of いい (good) and 勝負 (match, contest). The phrase literally means 'a good match', implying a well-fought, evenly balanced competition.