Big Zipper Islands (Nurikabe)
(Eingestellt am 5. Februar 2026, 16:43 Uhr von gdc)
The 9x9 version of my previous 6x6 puzzle Zipper Islands. According to testers (thanks everyone!), the difficulty should be right between 2 and 3 stars.
Modified Nurikabe: Draw 8 lines of length 2 or more such that each circle is the center of one of these lines. The lines only move orthogonally and may not touch themselves or each other orthogonally. Each 2x2 must contain at least one cell on a line. Non-line cells form a single orthogonally connected area.
Zipper Islands: Digits an equal distance to the (circled) center of a line sum to its central digit.
Partial Suguru: Digits never repeat on lines. Circles marked with "S" also count the number of cells on their line.
Ambiguous Cave: A digit in a diamond is of either "type" (line or non-line) and counts how many cells of its own type it sees in the row and column combined, including itself. The other type blocks vision.
Example
In this example, line-cells (zipper islands) are colored green and non-line cells are colored blue. The diamond in the middle sees 1 cell to the left, 2 cells on top and itself (1+2+1=4).
Lösungscode: Cells on lines (zipper islands) in row 7, left to right.
Kommentare
am 11. Oktober 2026, 19:51 Uhr von LARSPARIS
I think it was great
am 3. April 2026, 10:15 Uhr von Scorps
Lovely logic, 35 minutes for me, thanks for sharing!
am 21. Februar 2026, 21:18 Uhr von silent_rob
Thanks for the excellent puzzle! Lovely combination of nurikabe and zipper logic that led to interesting and enjoyable deductions.
am 21. Februar 2026, 13:48 Uhr von wuc
You made me a big nurikabe fan with your puzzles. Great setting thx.
am 8. Februar 2026, 19:17 Uhr von damo_89
Gorgeous, super smooth, 2 stars for me. Great introduction to nurikabe hybrids.
am 5. Februar 2026, 19:40 Uhr von Wuschel
Very nice and approachable, thank you!
am 5. Februar 2026, 18:56 Uhr von Rockon101000
Loving the nurikabe puzzles recently, and this was a great twist! Took me 40 minutes, I agree with the 2.5 star rating.
am 5. Februar 2026, 16:53 Uhr von Oddlyeven
Very fun and enjoyable puzzle! Thanks!
