Normal Sudoku rules apply. Clues outside the grid give the sum of the digits along the indicated diagonal.
The Parity Rule: if an ODD cell is surrounded (king's move) by an ODD number (X) of ODD digits, it must be coloured grey and the cell must contain the digit X. If an EVEN cell is surrounded by an EVEN number (Y) of EVEN digits, it must be grey and the cell must contain the digit Y.
ALL cells in the grid must follow the Parity Rule. ALL possible grey cells are given (e.g. if a NON-GREY cell is surrounded by exactly 4 even digits and 4 odd digits, it must be ODD).
Link to assist with solve: https://f-puzzles.com/?id=2ljhq5qs
Solution code: Rows 5 and 6
on 19. December 2022, 23:05 by DanjerBob
Haven't revisited this in a while but changed the rules (again) to be more clear :)
on 10. July 2022, 09:35 by Muhammad
This is fun and need a huge amount of concentration, thank you!
on 14. October 2021, 12:21 by uvo_mod
Labels angepasst.
on 2. June 2021, 17:58 by DanjerBob
edited rules (thanks Tom1i), changed title (sorry glum_hippo!)
on 2. June 2021, 15:05 by DanjerBob
Thank you Tom1i - I will edit the rules to discuss 0 and make them more clear!
on 2. June 2021, 13:52 by Tom1i
I really liked it. Recommend highly!
on 2. June 2021, 06:00 by DanjerBob
I am back! Hope you enjoy my puzzle - this took me months to set. Writing the rules took almost as long ;)
Please let me know if there are any mistakes or if anything in the rules is unclear.