The numbers horizontally and vertically show how many cells should be filled with water in rows and columns.
Water distributes evenly horizontally under the influence of gravity and flows down if the puzzle area is not limited by borders.
You need to fill some areas of the puzzle with water so that all numbers show the correct value. To make solving easier, you can place crosses to mark empty cells, they do not affect the result.
Pro? Record a master class and get V.I.P.
