Place a lightbulb into some white cells so that all cells in the grid are illuminated. Lightbulbs can give light in straight horizontal and vertical lines, until the rays meet a black cell or the edge of the grid. Lightbulbs must not illuminate each other. A digit in a cell indicates the number of lighbulbs that are orthogonally adjacent to that cell.
Solution code: For every row from top to bottom, enter the number of lightbulbs.
on 11. January 2023, 06:44 by TJReds
penpa link: https://tinyurl.com/2etltz43
on 10. December 2017, 08:41 by ibag
Wie schön!