I think it would make more sense to end the current mined field once all the mines have been correctly marked by flags right? Whenever I finish marking all the mines, there are always 4+ empty cells left that I know for sure are empty. I would then have to wait a day and buy contracts to complete it. I can just by multiple contracts and earn lots of point in one day, but it's not healthy to play non-stop for hours. I also can't just keep playing as I have other things to do. I'd like to save an 1h a day if I can to play and it's more than enough to finish one contract. But after that it feels like a chore to finish it and it becomes less fun.