Cannot believe non-puzzle players can pass levels 5 and 6. You are so smart.
In fact, after knowing about the theme, I went alseep. When I woke up, the idea of forming loops of equations just came into my mind, together with the design of all the 9 levels. Literally 50% of the game is finished in that 10 minutes. And I can proudly say that they all come from God. So I managed to submit my project 2 days before the deadline.