Oh, It would have been nice if the board wasn't so small at 10x15 and so on. I personally find it troublesome at some times because the boxes are kinda small...
It would be considered "hard" if you'd have the ability to restrain yourself from clicking on the walkthrough.
I like this game! I think I've figured out a system to help me fill in the correct boxes! I like how the levels tend to twist my mind sometimes, so much fun! :$
I am glad for you :)