I'm enjoying this creative logic puzzle. But I've had to redo several on them over. It appears that the Steam Auto-Sync is not always loading the previous saved game correctly.

I just purchased the game - I haven't even installed it yet - and I already have about half of the achievements somehow. What is going on?

I just completed the game and have all achievements but those two.

This appears to be the Japanese logic puzzle Gokigen Naname , but worse because of the lack of "don't form a loop" constraint. Without that constraint, every cell will have to be clued for a unique solution, which is very much not the case in the trailer and screenshots....

Can anyone give me an idea of how to play this game please. Can't find any clear instructions.