back to square one

Translations
вернуться к нулю
After the project failed, we had to go back to square one.
После провала проекта нам пришлось вернуться к нулю.
Definitions
To return to the starting point of a process or situation, often after a failure or setback, and having to begin again from the beginning.
Words
back

adverb
назад
to

preposition
к
square

noun
квадрату
one

numeral
одному