When I have a 0 number, that 0 square and all the ones surrounding it must be all dark. 0 means no squares are light in that block of 9 squares where 0 is the center of the block. But when I turn all the squares dark, one of them (which does have a number in it) will show an error. I cannot turn all the squares surrounding a 0 dark. What am I missing? :(...

I can’t figure out how to reposition the screen. Whatever section it opens to I’m stuck right there.

It usually crashes when filling a square that would complete a region, when it happens it loses some of the progress, not much but some.

What a game!!

I finished it and did not get the achievement. Closed the game and reopened it, which then gave me the achievement. Just FYI.