Nice puzzles, thanks letting me have a couple of fun minutes with those.
In the star battle (at least the medium I played) the solutions are non-unique and there you sometimes make random mistakes, which is a bit annoying. Unless I'm missing something because it's already late, but I'm quite sure.
They should be unique solutions. The way I generate the puzzles requires them to have a unique solution. I've thought I found a couple that were not unique, but then both times, I was missing a cell I could eliminate. But let me know at ChestertonTechnologies@gmail.com with the puzzle number and difficulty if you find one and I'll look into it!
In the star battle (at least the medium I played) the solutions are non-unique and there you sometimes make random mistakes, which is a bit annoying. Unless I'm missing something because it's already late, but I'm quite sure.