Farewell
(Published on 29. June 2025, 18:19 by PhenixDe)
Each cell in the grid should be coloured either blue (for water) or green (for land).
Water cells form a single, orthogonally connected region in the grid.
No 2x2 area can contain only water cells.
An island is an orthogonally connected region of at least 3 land cells. Every land cell in the grid is part of an island.
Islands may touch diagonally.
The digit in a cell containing an arrow shows how many cells share the same colour with the cell in the given direction, not including the cell itself.
Cells pointed by an arrow are not necessarily next to each other.
Not every possible arrow is given.
Land cells forming an island must have different values.
The ruleset used in this puzzle has been invented by matt383.
Solution code: Row 2
Comments
on 27. July 2025, 15:04 by Richard
WOW!
IMPRESSIVE!
SPECTACULAR!
I think it is immense sad that this masterpiece only has three solves.
Each and every deduction was well telegraphed and although it is a very hard one, it is completely logic solvable, with a good mix of islands-logic and normal sudoku logic. Very well done!
Maybe the low number of solves indeed is related to the fact that there is no solve link provided in the puzzle.
For me it doesn't matter. I am such a nobody that IS still printing puzzles to solve them with pencil.
To mitigate the comment of fuxia: Currently
- the World Sudoku Championship;
- the Grand Prix hosted by the WPF; and
- national championships
are all still held on paper. As long as I am in charge for the Dutch national championships, I will continue to solve puzzles on paper, especially to stay in touch with what the contestants are facing.
If we fast forward the film ten years, it is very well possible that championships are held with digital puzzles, but untill that time...
This type is on my list as SVS potential ever since I solved the first puzzle from matt383 a few years ago. Still I haven't spend enough time to think about a decent entry for my own version so I was eager to solve this one for inspiration.
It is still on my list, but I didn't get an idea for a trivial entry yet. :-)
Might take a while before I finally make one, but now it has become a 'bucket-lsit' issue. :-)
on 1. July 2025, 09:14 by zeniko
This is a nice series. I found Treasure Island to be the trickiest of them and Pitch Black the most approachable. Still, all three puzzles had some intricate island logic and nice interactions with Sudoku. Thanks for sharing.
on 30. June 2025, 15:57 by ryba
SudokuPad link with no solution check https://sudokupad.app/4gjukaaati
on 30. June 2025, 15:39 by fuxia
If you are wondering why there are no solves for your puzzles: You have to give a link to the puzzle. It's 2025, nobody is printing out puzzles anymore.
