This is the third puzzle of my natural phenomenon sudoku series. I hope you enjoy it.
Rules:
Normal sudoku rules apply.
A circled digit indicates exactly how many circles contain that digit.
Digits may not repeat along the indicated diagonal. In addition, the marked diagonal also acts as a parity mirror. Digits above/right to the mirror reflect their parity to those below/left (e.g. if R5C8 is even, then R8C5 is also even).
Digits on a gray line must sum to ten.
Solution code: Row 2 digits from left to right
on 24. October 2023, 10:42 by rhodri
Lovely puzzle!
on 13. October 2023, 20:44 by SenatorGronk
Very nice!
on 13. October 2023, 20:31 by palpot
The blue marker was an accident and doesn't mean anything. I've replaced the puzzle image.