I think this puzzle is a round 2.5-3 stars difficulty. I've added a hint below the image in case you get stuck. Happy solving!
Rules:
Normal sudoku rules apply.
AntiKnight: Cells separated by a knight's move (in chess) cannot contain the same digit.
XV: Cells separated by X must sum to 10. all Xs are given (negative constraint).
The light blue lines are both German whispers and region sum lines.
German Whisper: Adjacent digits along a green German Whispers line must have a difference of at least 5.
Region sum line: The sum of digits on the line is the same within each box. Different lines may have different totals.
Hint: Consider where the X pair digits in R3C12 goes in boxes 4 and 7.
Lösungscode: Column 4 digits from top to bottom.
am 31. Dezember 2023, 00:56 Uhr von chain.reader
awesome.
am 6. August 2023, 18:15 Uhr von Tingo
Great puzzle! Lots of fun and lots of logic to follow. Very, very enjoyable. Thanks for setting and sharing!
am 24. Juli 2023, 21:30 Uhr von sacklunch
Beautiful puzzle! Really enjoyed it, thanks.
am 22. Juli 2023, 14:53 Uhr von Tedrow
It took quite a while to figure out the coloring, and even then I thought I broke it a couple of times.
This was a fun puzzle. Thank you for setting it.
am 21. Juli 2023, 16:08 Uhr von Onkel_Dagobert
Great fun and quite hard for me.
am 21. Juli 2023, 12:20 Uhr von timyoth
Lovely
am 20. Juli 2023, 22:24 Uhr von Onkel_Dagobert
Great fun and quite hard for me.
am 20. Juli 2023, 21:56 Uhr von frankpujo
Very nice puzzle, went wild with the colouring!