Haven't solved it yet, but I dig the idea! FYI, this game is still searchable. To fix that, go to https://itch.io/dashboard and select "Edit" for your game. Select "Visibility & Access" > "Public". In the "Public access settings" box, check "Unlisted in search & browse".
Two pieces of feedback before this launches for the calendar. First, I'd recommend adding checkpoints after each puzzle solve using the Puzzlescript CHECKPOINT command so players can restart each puzzle without resetting the entire thing. Second, I'd recommend increasing the viewport dimensions in your itch project settings. It's tiny right now!
Good stuff! Congrats on making your first game!