Rules: Normal Sudoku rules apply. Place the digits 1 to 9 once each in each row, column and box.
Region Sum Lines: The sum of the digits on a line within a single box must be the same for each box that line passes through.
Little Killer Clues: Digits along the marked diagonals must sum to the total given. Digits may repeat on the diagonals.
Links:
F-Puzzles: https://f-puzzles.com/?id=yyluq835
CtC App: https://tinyurl.com/y34z2mbb
Solution code: Row 1 Column 7
on 16. May 2022, 20:06 by wenchang
Nice and smooth.
https://youtu.be/UBBJ3JOTTp0