Standard Sudoku rules apply.
Cells containing values exactly one greater than an immediate neighbour (diagonal or orthogonal) within their box are shaded (and otherwise unshaded).
Solution code: Row 7
on 18. September 2024, 01:41 by Shuhua Milk
Nice!
on 2. May 2024, 12:58 by Abdul the Killer
@oregan0 @ozgaz
Thanks for the comments and the solves.
on 4. April 2024, 23:23 by ozgaz
Thanks atk - really love this constraint and the way you build the solve path.
on 4. April 2024, 16:03 by oregan0
another good one
on 2. April 2024, 14:10 by Chelo
Thank you again @ATK, I always love your puzzles and this constraint.
—-thanks for saying—-ATK