or solve online (using our beta test of Penpa-Edit tools)
Theme: Clue Symmetry and Logic
Author/Opus: This is the 49th puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Divide the grid into gray and white regions, each containing exactly one number and with an area equal to that number. Numbers in white cells are part of white regions; numbers in gray cells are part of gray regions. Same colored regions cannot share an edge.
This example image should help:
Answer String: Enter the length in cells of each group (white and gray) in the marked rows. Separate the rows with a comma. For the Example, this is “13,121”.
Time Standards (highlight to view): Grandmaster = 2:45, Master = 4:15, Expert = 8:30