Normal Sudoku rules apply. Additionally:
1. German whispers: digits along green lines must differ from their neighbor on the line by at least five.
2. Antiknight: cells that are a chess knight's move away from each other may not contain the same digit.
3. Inequalities: inequality signs point to the lower digit.
F-Puzzles: https://f-puzzles.com/?id=y9vmvmr8
CTC: https://tinyurl.com/antiknightwhispers
Solution code: Row 1, column 9.
on 10. March 2022, 16:22 by slowbiex
loved it, also very nice that thoughtbyte was willing to give pointers!
on 27. February 2022, 09:30 by robals
This was harder to me than expected but enjoyed it!
on 12. February 2022, 13:24 by Snow the Jam Man
Very nice puzzle, loved the break in and it kept resisting till the end.
on 12. February 2022, 12:34 by Bankey
Very nice puzzle. Thanks, @ thoughtbyte :-)