Tropical Nurikabe
(Published on 19. January 2026, 16:00 by Blobz)
Nurikabe Puzzle Pack
III : Tropical Nurikabe
Normal sudoku rules apply.
Divide the grid into a number of islands -- orthogonally connected groups of cells. Every island contains a single circled cell; the digit in the circle indicates the number of cells making up the island.
The islands are surrounded by a waterway -- a single orthogonally connected group of cells. All caged cells are waterway cells; the digit in a caged cell indicates how many waterway cells are seen orthogonally from that position, including itself (island cells block vision). The waterway cannot form any 2x2 areas.
On islands of size 3 or more, every three consecutive cells must contain a low digit {123}, a middly digit {456}, and a high digit {789}. On islands of size 2, the digits must be from different entropic groups (low, middly, high).
Have fun, leave a comment if you enjoy the puzzle!
Solution code: Row 5
Comments
on 25. April 2026, 02:13 by acascarino
Have only had to restart once so far - a hint, the given 1 in the bottom row is not circled!
on 16. March 2026, 22:46 by Sudopera
Very cool and approachable. Nice flow. I'm really enjoying this series. Thanks
on 6. February 2026, 00:13 by wuc
Finally got used to this ruleset. Awesome fun. I wonder how the next yin yang goes. Great setting thx.
on 26. January 2026, 01:05 by ContreBombarde32
Lovely puzzle and very enjoyable - thanks!
on 22. January 2026, 11:33 by Jonikles
Sudoku + Nurikabe is always a fun combination.
Thanks for setting!
on 22. January 2026, 03:46 by NotSoMagnifique
Truly fabulous combo of the nurikabe and the entropic properties!
on 20. January 2026, 00:23 by ScatterBrain
This is another great Nurikabe puzzle that you've made! Thanks.
on 19. January 2026, 19:55 by sujoyku
Lovely logic! Thank you, Blobz!
