Spiral Galaxies by Serkan Yürekli

Spiral Galaxies by Serkan Yürekli


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: When Will the Solution Be Clear?

Author/Opus: This is the 159th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Spiral Galaxies rules.

[Copying the rules here as this is the first week: Divide the grid along the indicated lines into connected regions – “galaxies” – with rotational symmetry. Each cell must belong to one galaxy, and each galaxy must have exactly one circle at its center of rotational symmetry.]

Spiral Galaxies Example by Thomas Snyder

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. The example has the answer “2131,331”.

Time Standards (highlight to view): Grandmaster = 5:00, Master = 6:30, Expert = 13:00

Solution: PDF; a solution video is available here.

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 will soon be found in The Art of Puzzles 2.

  • Michael Tang says:

    Loved the theme, haha

  • skynet says:

    23:07.Great construction! Which came first ? Solution or the puzzle ?

    • The solution was first. It is a little bit hard to find a proper or a meaningful theme in the Spiral Galaxies, so I tried to get a satisfying (at least for me) idea first, after that I constructed the whole puzzle on it. However, it didn’t go well in the first attempt, because it’s hard to find a specific cell that can be contained by just one galaxy. I changed some of the galaxies to hide some logic ways for the solvers, then it worked.

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