Good Morning
Bilbo: There's an adjacent-parity constraint!
Gandalf: What do you mean? Are adjacent digits in odd numbered boxes required to sum to an odd total, or do you mean that even numbered boxes must contain an even number of adjacent pairs that sum to an even total; or that adjacent digits along an indicated diagonal must sum to an even total; or that diagonally adjacent digits cannot be identical?
Bilbo: All of them at once. Also normal sudoku rules, inequalities point to the lower digit, and digits along a line must form a consecutive set, into the bargain.
Solution code: Row 4
on 25. February 2023, 17:02 by erml
Great puzzle, very entertaining and challenging
on 24. February 2023, 10:22 by Iluvsodah
Awesome puzzle, captivating :)