There are actually multiple solutions to the puzzles mostly unintentional though I couldn't test for everything. Part of the fun is finding ways to solve the puzzle and I like the solutions people come up with.
As for the theme yeah the idea is its a class/training on how to be a frog finder. It is a stretch I know but I really wanted to use the frog and companion wild cards as much as possible and this is what I came up with. I had the idea for a puzzle game about finding frogs and worked in the idea of it being a lesson towards the end.