Rules:
Normal Sudoku rules apply.
Cells marked with a gray square must contain even digits; while cells marked with a gray circle must contain odd digits.
The gray lines are palindromes - numbers that read the same both forward and backward (ie. 13531). Palindromes inside purple cages must sum to the total in the top left corner of the cage. Digits must necessarily repeat inside cages.
German translation thanks to Google Translate.
Solution code: Row 1 followed by row 8.
on 30. July 2022, 23:47 by PinkNickels
nice one, CP!
on 29. July 2021, 00:53 by KyleBaran
Not overly difficult, but this was a nice killer variant. I enjoy palindrome puzzles, and the break-in was pleasant.
CP: Thanks for the nice comments!