Clouds (also known as "Rain Clouds", "Radar") is a variant of Battleships puzzle. The task is to mark certain cells of the rectangular grid as belonging to a cloud. Clouds occupy an area of rectangular shape and their width and height is at least two cells. No clouds touch each other, not even diagonally. Numbers outside the grid show the quantity of cells occupied by clouds in corresponding row or column.
Cross+A can solve puzzles from 4 x 4 to 20 x 20.