Entrée #345849

This method "and let's get away from nasty!" )))
Get to a certain point, check the YAK click "Find bugs". If not, click "Save" and paint over some group of cells. If your assumption was wrong, after a couple of moves you will receive the contradiction between columns and rows. Then click "Load", note exactly a blank cell (as if to paint them, you will get an error), click "Save" and decide on.