z powrotem do punktu wyjścia in inglese:

So I'll just go back to my flat and I'm back to square one.

It seems we are back to square one.

The company we were supposed to sign the contract with pulled out of the deal so it looks like we are back to square one.

Negotiations have broken down, and it's back to square one. We lost our appeal of the lower court decision, so back to square one.

Our programmers identified what they thought the problem was with the software. After working for several hours, it turns out that the problem is something different. We're back to square one, unfortunately.