There is a very special piece of logic in the solution path of this puzzle that I hope you will enjoy. I am not sure whether this is 4 or 5 stars so please comment on what you think the difficulty should be. Good luck and have fun!
In addition to normal sudoku rules this puzzle follows the following rules:
Little Killer: Numbers on a diagonal indicated by an arrow must sum to the number on the arrow. Numbers may repeat along this diagonal
Differences: Numbers in circles between two cells indicate the difference between the numbers in those two cells
Cryptic: Some of the digits in the clues in the puzzle have been replaced by letters and question marks. Each letter represents a different digit, and the question marks can represent any digitSolution code: 5th row followed by the 5th column
on 12. July 2022, 21:57 by Vebby
It took me some programming plus massive case checking to solve this. I'm curious to know the intended logical path.