This thing isn't very good?
You're right! It's very much in beta. Check back later for improvements.
How do I input a puzzle?
Input your grid size, and hit the "Display Grid" button. After that, click on the cells and type in the numbers. Once you think
you've got it right, hit the "Solve" button.
You can also input a "puzzle string", which is something like "3x3:2a3a3a2aa"
How do I input numbers larger than 9?
You don't. Maybe in the future!