(Note: puzzles during this bonus week are harder than usual; the four puzzles from Monday-Thursday are all about Thursday or Friday level difficulty.)
Author/Opus: This is the 44th puzzle from our contributing puzzlemaster John Bulten.
Rules: Shade some white cells black so that exactly one of the grid’s clues appears in each contiguous white or black region and indicates the clued region’s area. Circled numbers indicate cells that must remain white.
Also see this example:
Answer String: Enter the length in cells of each of the black segments from left to right for the marked rows. Separate each row’s entry from the next with a comma.
Time Standards (highlight to view): Grandmaster = 4:30, Master = 7:45, Expert = 15:30
Note: Light is John Bulten’s variation of the shading puzzle Light and Shadow, created by Serkan Yürekli. Unlike Light and Shadow, where all numbered cells start white or black, in Light puzzles the numbered cells that are not shaded or circled may be either white or black in the solution.