Translation guide
The English idiom 'going back to square one' means returning to the starting point after a failure or setback. In Japanese, this concept is expressed through several common phrases and idioms, each with slightly different nuances.
Expressing that a process must begin again from the very beginning because previous efforts were unsuccessful or invalidated.
This is the most direct equivalent, literally 'return to the starting point' (like in a board game). It is widely used in both casual and formal contexts.
交渉が決裂して、振り出しに戻ってしまった。
The negotiations broke down, and we're back to square one.
データが消えたので、作業は振り出しに戻った。
The data was lost, so the work went back to square one.
Literally 'redo from one', meaning to start over from scratch. Very common in everyday speech.
計画が通らなかったから、一からやり直しだ。
The plan wasn't approved, so it's back to square one.
バグが見つかって、プログラムを一からやり直すことになった。
A bug was found, so we had to redo the program from scratch.
Literally 'return to a blank sheet', implying that previous decisions or progress are nullified and you start anew. Often used in formal or business settings.
この案は白紙に戻して、もう一度検討しましょう。
Let's go back to square one with this proposal and reconsider it.
Both mean starting over, but 振り出しに戻る emphasizes returning to the initial state after a setback, while 一からやり直し focuses on the act of redoing everything from the beginning. 振り出しに戻る is often used when external factors cause the reset, whereas 一からやり直し can be a proactive decision.
ミスで振り出しに戻った。
A mistake sent us back to square one.
納得いかないので、一からやり直します。
I'm not satisfied, so I'll start over from scratch.
Do not translate 'square one' literally as 四角い1 (しかくい いち). This makes no sense in Japanese. Use the idiomatic expressions above.
An idiomatic expression meaning to end up back where you started, often with a sense of futility. It has a literary or old-fashioned feel.
せっかく昇進したのに、部署がなくなって元の木阿弥だ。
I finally got promoted, but the department was dissolved, so I'm back to square one.