It's an algebra game.

Given a set of operations, can you get to state X?

Usually requires a lot of searching and/or expertise, however the solutions will break pretty easily depending on which shell you're using, etc. So doesn't really teach you anything aside from iterating over a set of all possible operation combinations.

It's also a variation of the classic tech thought experiment/game 'If you only had X and how would you do Y?'. Like 'If all you had was telnet and had to send an email how would you do it?' or some variation of it, was a common one.

If it helps you can click on 'view solutions' to see correct answers if you are stuck.