This is a typical puzzle map that tests your understanding of the game and its mechanics, usually implying a single solution, which can generally be reached logically. If brute force or trial and error is used to find the solution, it's usually on a small scale, in addition to this particular battle.
To avoid spoilers for others, I suggest discussing this in Telegram or VK – I initially wanted to communicate via private message, but I haven't been able to message anyone on this forum for a week – it gives a 500 error.