Stostone Fillomino
(Published on 16. June 2023, 07:06 by bolgat)
Stostone Fillomino
I couldn't decide whether to make a stostone or a fillomino, so why not both? Hopefully it is fun to solve :)
Rules:
- Divide the cells in the grid into regions so that no two regions of the same size share an edge.
- Each cell contains a number equal to the size of its region.
- Shade at least one cell in each region such that all shaded cells in a region form an orthogonally connected group.
- If two shaded cells are orthogonally connected, they must be in the same region.
- If all of the shaded groups were to fall straight down without changing shape, they must completely fill the bottom half of the grid.
- The number in a cell with an arrow gives the number of shaded cells in the direction of the arrow, not including the arrow cell.
Penpa+ link (with solution check on shaded cells): Click Here
Solution code: The units digit of each number in row 4, from left to right
Comments
on 29. December 2024, 20:45 by skuntsel
Amazing puzzle! It is really not straightforward to understand what’s the next step, but after some investigation and trial-and-error you’ll be able to devise the right step. Great construction to make your brain think, and even when you believe that everything is all right to carry on you might find an non-obvious alternative right move later only to prove you wrong initially. Highly recommended!
on 18. May 2024, 12:55 by SudokuExplorer
Lovely puzzle combo! :-)
on 18. May 2024, 09:41 by QuiltyAsCharged
Terrific puzzle, thanks! I'm glad Phistomefel recommended it (from their puzzle "Stostone Cold".)
Here is a Sudokupad version. For the solution check to work, enter only the units digit in each cell. https://sudokupad.app/6es6owotyl
on 20. June 2023, 05:35 by Agent
Cool puzzle and ruleset!
on 18. June 2023, 15:47 by wand
a delightful solve!
on 17. June 2023, 23:37 by szabog
Very good, very enjoyable puzzle, thank you :)
on 17. June 2023, 12:07 by Jesper
Lovely combination! Lots of fun.
on 17. June 2023, 09:39 by MicroStudy
this sto-stone absolutely ro-rocked
on 17. June 2023, 08:22 by Phistomefel
That was a lot of fun! Thanks for constructing the puzzle, bolgat! :)
on 16. June 2023, 22:04 by kjholt
Very fun puzzle! I would love more like this. For anyone thick-headed like me, the units digit means the digit in the ones place (at least in base-10). I didn't know that until today!
on 16. June 2023, 11:50 by RJBlarmo
Cool puzzle type, fun solve!
on 16. June 2023, 08:30 by Chefofdeath
Very nice puzzle :) the stostone twist on the rules made for some really interesting interactions! Thank you for sharing!
