Please write any bugs or feedback in comments below.

Okay, so coming from Sudoku Universe the color contrast between main grid and number highlighted grid is already pretty bad there (it only works well in a handful red palettes), but somehow this game make it even worse, since none of the palettes provides a color difference that has enough contrast to distinguish between the two, which makes the function basically useless....

These beats are banging. Who does the soundtrack? Is it available to download?

Is there any way to make it so that the game allows you to put a cursor down and use either WASD or arrow keys to move it around? Also while the NumPad works to fill in a space, shift + numpad key doesn't pencil in number into a box. If possible, please add it so that shift + numpad key will work as well. The pencil-in function, only left shift key works, the right shift does nothing, please fix. Thanks! Addendum. The reset button is way too easy to press, I just worked 45 minutes on a puzzle, decided ...

It would be nice if there was an option to show all errors rather than just the obvious ones. Currently when I want to check my level I have to look at a nearly completed version that somebody else did and that feels somewhat like cheating.