Heating my room (isofill)
(Published on 22. August 2026, 14:11 by Default)
I was inspired by the isofill ruleset of Marty Sears
Rules:
ISOFILL: Divide the grid into 10 regions, each with 10 orthogonally connected cells. Every cell in a region should contain the same digit. All of the digits 0-9 must appear in the grid.
REGION ROTATION PAIRS: The ten regions are divided in 5 pairs. Two regions form a pair when their unique digits sum to 9. Two regions that form a pair have the same shape rotated by 180 degrees.
RENBAN LINE (purple): contains a set of consecutive digits in any order, without repeats.
SLOW THERMOMETER (grey): Numbers increase or stay the same as they move away from the bulb.
Solution code: Row 8 from left to right
Comments
on 30. August 2026, 14:49 by QuiltyAsCharged
Very neat to see how this fits together! My brain didn't want to believe the rotational pairs were possible at certain points.
on 22. August 2026, 16:52 by Default
fixed solution code
on 22. August 2026, 14:49 by redgecko
solution code seems to be incorrect?
Thanks! Turns out I am so used to 9x9 grids that I think row 7 is the second from below :)
on 22. August 2026, 14:47 by redgecko
solution code seems to be incorrect?
