Inspired by my fascination for Goldbachs Conjecture. I might have created some monsters.
Rules:
1. Normal Sudoku rules apply.
2. Primes see the digit 1 at least once in distance of their value in any direction, if allowed by the size of the grid. Some are marked with a circle.
3. All but one "good" prime are marked with a green cell. Additionally any multiple of its value in any distance away sees a cell, which includes a multiple of itself or the digit 1.
4. Digits on a green german whisper line differ at least by 5.
(Notes: Any directions are North, East, South and West. Number 1 is not a prime.)
Sudokupad
Have fun!
Examples:
R2C2 is good prime and sees at least one 1. R5C3 is prime and sees at least one 1. R7C4 is likely to be 5, but careful can be 2 and 7 aswell. R6C6 does not see a 1 and that is ok.