Nurikabe Line Rule
Fill in the cells under the following rules.
You cannot fill in cells containing numbers.
A number tells the number of continuous white cells. Each area of white cells contains only one number in it and they are separated by black cells.
The black cells are linked to be a continuous wall.
a grid cannot contain five consecutive black cells in a row or column (2 x 2 cell area can be all black).
Nurikabe Line a grid cannot contain five consecutive black cells in a row or column (2 x 2 cell area can be all black).