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or solve online (using our beta test of Penpa-Edit tools; use the tab key to alternate between shading and number entry modes)

Theme: Spiral (Note: The regions grow from one cell in size to eleven and back down to one.)

Author/Opus: This is the 105th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Variation of Nanro. The small clue numbers indicate how many cells in that region are used (but do not necessarily indicate which cells are filled as standard Nanro clues do).

Answer String: Enter the length in cells of each of the segments labeled with numbers from left to right for the marked rows, starting at the top. Separate each row’s entry from the next with a comma.

Time Standards (highlight to view): Grandmaster = 5:45, Master = 9:00, Expert = 18:00

Solution: PDF

Note: Follow this link for other Nanro variations and this link for classic Nanro. If you are new to this puzzle type, please first try out our easiest Nanro to get started.