Thanks for stopping by! I had the basic engine completed for other IFComp games, so I'm glad it paid off at least somewhat!
You are probably right about the final puzzle. I thought it would not be hard to figure, because it was not hard to program. But here's where the 4 hour time limit bit me: I had time to fix a bug where you could actually short-circuit the puzzle a bit. But that left no time to clue it better! So that is there for post-comp.