or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a composite mode for line/edge drawing and a shading mode.)
Theme: Think Outside the Box
Author/Opus: This is the 329th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard Spiral Galaxies rules.
Answer String: Enter the number of cells in each connected group (between bold lines) in the marked rows. Separate each row’s entry from the next with a comma.
Time Standards (highlight to view): Grandmaster = 2:00, Master = 3:30, Expert = 7:00
Note: Follow this link for classic Spiral Galaxies puzzles on this website and this link for variations on Spiral Galaxies puzzles. If you are new to this puzzle type, here are our easiest Spiral Galaxies Puzzles to get started on. More Spiral Galaxies puzzles can be found in The Art of Puzzles 2.