Spiral Galaxies by Serkan Yürekli

See more discussion of the puzzles from the United States’ 2021 Puzzle Grand Prix on this post. Note there are some construction details and potential spoilers on that post so view it after you solve.

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.)

Author/Opus: This is the 352nd puzzle from our managing editor Serkan Yürekli.

Rules: Standard Spiral Galaxies rules.

Difficulty: 3.5 stars (estimate based off competition points; timing standards not available from our usual testers)

Solution: PDF

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.

  • Avatar photo codebeard says:

    Struggling to find a place to start in this puzzle. Will there be a video solution?

  • Avatar photo Menderbug says:

    I also really struggled with the break-in for a good while. If you want a hint:

    Gur gbc evtug dhnqenag vf xrl. Gurer’f n fcrpvsvp pryy gung pna bayl tb jvgu bar tnynkl prager, naq nsgre lbh’ir cynprq gung bar, guvf fhssvpvragyl pbafgenvagf gung dhnqenag shegure gb uryc lbh nffvta fbzr bgure pryyf.

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