noun
Refers to a complete change or reversal, often in a dramatic or sudden manner. Can be used in various contexts such as situations, feelings, or appearances.
彼の態度は打って替えたように変わった。
His attitude changed completely, as if transformed.
打って替えたような晴天になった。
The weather turned into a completely clear day.
noun
snapback; reciprocal capture
A Go term for a situation where a player captures a stone that just captured one of their own stones, often leading to a reciprocal capture. Usually written in katakana as ウッテガエ.
See also: 打って返し
この局面ではウッテガエが決め手になった。
In this position, the snapback was the decisive move.
Synonymous Go term; 打って替え is more commonly written in katakana, while 打って返し may appear in kanji or hiragana.
Compound of 打つ (utsu, 'to strike') + て (conjunctive particle) + 替え (kae, 'change'). The literal meaning is 'strike and change', suggesting a sudden or decisive transformation. The Go term likely derives from the idea of a counter-strike that reverses the situation.