Logic Masters Deutschland e.V.

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. Some "good" primes 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.

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 this cell can be 2 and 7 aswell. R6C6 does not see a 1 and that is allowed.