Square Wheel
(Published on 19. March 2024, 12:34 by Abdul the Killer)
Standard Sudoku rules apply.
Shade some cells so that in the finished puzzle cells containing values exactly one greater than an immediate neighbour (diagonal or orthogonal) within their box are shaded (and otherwise unshaded).
The shading pattern must have left-right as well as up-down symmetry.
Values in cells with arrows give the number of shaded cells in the indicated direction. All possible arrows are given.
Solution code: Row2
Comments
on 17. September 2024, 23:44 by Shuhua Milk
Nice!
on 25. March 2024, 20:56 by ChinStrap
Super beautiful, as usual for a AtK puzzle. Really love how you always have to go back and forth from all the different pieces (symmetry, shading, negative constraint on arrows) throughout the whole puzzle.
---It's always good to receive such a positive review. Thanks. ---ATK
on 24. March 2024, 14:13 by Abdul the Killer
Thanks @DanishDynamite, harwitz, vitaminz and galium_odoratum for your kind comments and solves.
on 23. March 2024, 23:44 by galium_odoratum
What a treat to solve, very smooth logic, thank you for setting!
on 21. March 2024, 17:46 by vitaminz
Great puzzle! Some really nice shading logic here that could have been the focus on its own but the arrows have been a really nice addition to the toolset.
on 21. March 2024, 13:07 by harwiltz
Extremely satisfying, one of my favorites!
on 20. March 2024, 18:09 by DanishDynamite
Lovely idea and puzzle!
on 20. March 2024, 11:31 by Abdul the Killer
Thanks @SirWoezel, misha and fuxia, for your kind comments and solves.
on 20. March 2024, 09:29 by fuxia
Some very unique and interesting logic in this one. Good fun, thank you!
on 20. March 2024, 03:17 by misha
Great puzzle! Nice logic in combining the sudoku with the symmetric shading.
on 19. March 2024, 22:34 by SirWoezel
Great puzzle!
