Double-Plus Good
(Published on 2. July 2024, 12:34 by Abdul the Killer)
Standard Sudoku rules apply.
SHADING: Shade some cells so that in the finished puzzle cells containing numbers exactly one greater than an immediate neighbour (diagonal or orthogonal) within their box are shaded (and otherwise unshaded).
SYMMETRY: The shading pattern must have left-right as well as up-down symmetry.
ARROWS: Values in cells with arrows give the number of shaded cells in the indicated direction. All possible arrows are given.
Solution code: Row 5
Comments
on 6. October 2024, 18:51 by Shuhua Milk
Nice!
on 16. July 2024, 22:51 by galium_odoratum
Beautiful!!
---Thanks for the solve and the generous comment. ---ATK
on 7. July 2024, 12:51 by Abdul the Killer
Thanks to all for their generous comments.
on 4. July 2024, 00:26 by AsgarArn
Really enjoy solving these puzzles, took me a second, or a few minutes actually get that the 2x2 YIN YANG rule was not in this puzzle:)
on 3. July 2024, 14:42 by PippoForte
Super puzzle!
on 2. July 2024, 21:56 by DanishDynamite
Nice. A lot tougher than 2*, in my opinion.
on 2. July 2024, 15:45 by Franjo
A pleasure to solve - as always. Thank you very much for sharing.
on 2. July 2024, 13:42 by josebastian8
If a cell has multiple arrows, the digit on it gives the sum of the shaded cells in all directions combined or does it mean every direction has the same number of shaded cells?
—-Multiple arrows in a single cell indicate that there are the same number of shaded cells in each indicated direction. —-ATK
----
Thanks for clarifying, nice puzzle!
