Rules
Normal Sudoku Rules apply.
All lines are both German Whispers and Region Sum Lines.
Digits on Region Sum Lines have an equal sum within each 3x3 box they pass through.
Digits on German Whisper lines must have a difference of at least 5 from adjacent digits on the line.
For this puzzle, all lines must satisfy both properties.
Thank you to the testers and great team in the Sudoku Skunkworks for extensive testing, validation and feedback!
Links
Solution code: Solution Code Column 7 followed by Column 9. 18 digits, no spaces.
on 22. March 2022, 17:24 by mathpesto
What a clever puzzle! Loved the interaction between the two rulesets. :)
on 21. March 2022, 21:27 by twototenth
Nice! Very cool combination of constraints.