Negative Constraint Isofill
(Published on 25. August 2026, 16:12 by mathpesto)
Rules:
Isofill: Divide the grid into 10 regions, each comprised of 10 orthogonally connected cells. Every cell in a region contains the same digit. All of the digits 0-9 appear in the grid.
Kropki/V: ALL orthogonally adjacent cells containing consecutive digits are joined by a white dot. ALL orthogonally adjacent cells containing digits summing to 5 are joined by a V.
Solve online:
Solution code: Column 9 (top to bottom, 10 digits)
Comments
on 29. August 2026, 15:17 by Quizzmo
5min into the puzzle: how the heck do I have enough information to solve this. 15min it: wow this solves really smoothly. Out of nowhere! Loved the geometry
on 29. August 2026, 05:52 by vaeon
Like others have said, the flow comes out of nowhere. Loved this one.
on 27. August 2026, 17:11 by Oddlyeven
Nice and smooth! I loved the way it flowed from seemingly so little information! Thanks!
on 27. August 2026, 06:42 by sullyross
Beautiful work!
on 27. August 2026, 05:14 by EvanB
very goo d puzle!!!
on 26. August 2026, 22:52 by LeaVulpina
This went from "How in the heck is there enough information to even start?" to "This solves so smoothly and beautifully!" in moments. Love it.
on 26. August 2026, 13:37 by Franjo
Thank you very much for creating and sharing this wonderful isofill puzzle.
on 26. August 2026, 11:27 by PrissyP
Very nice Isofill. The negative constraint is a great Combination with it and the setting makes the solve super smooth and satisfying. Thank you
on 26. August 2026, 10:44 by JVA
100 minutes to finish, definitely not 1*
on 26. August 2026, 08:39 by amirs
Cool puzzle! I love how minimal the clues are
on 26. August 2026, 03:03 by Christounet
Clever puzzle. Thanks :)
on 25. August 2026, 18:11 by marty_sears
Beautiful! The geometric flow through this was really surprising, in a way that I found immensely satisfying. After a few minutes of not having a clue how to start, it suddenly all started flowing very nicely. Lovely stuff, a great addition to the Isofill series
