Terracotta Kids (Anti-Knight, German Whisper, Renban, Kropki)
(Published on 2. August 2025, 06:14 by juddimal)
Normal sudoku rules apply.
ANTI-KNIGHT: Cells separated by a knights move may not contain the same digit.
GERMAN WHISPER: Adjacent digits on green lines must differ by 5 or more.
RENBAN: Digits along lines must be a non-repeating set of consecutive digits, in any order.
KROPKI: Digits in cells joined by a black dot are in a 1:2 ratio.
https://sudokupad.app/n1uyxt1wjo
Solution code: Column 1 (9 digits)
Comments
on 18. August 2025, 04:21 by Mip
I guess this would have been easier with that SET relationship that I totally didn't even think about, but still only took 72 minutes.
I instead followed a fun relationship bouncing around of where 4's (and 2's) couldn't/had to go (i.e. 4s had to be on both Renbans, both 3 cell Kropkis, and turned out a 4 -had- to go on the long German Whisper or 4s couldn't go in box 5), and it all fell into place eventually.
on 3. August 2025, 21:18 by LeaVulpina
I dread to think how tough this would be without knowing the theorems, but as knowing them, this was really, really beautiful logic!
on 3. August 2025, 09:58 by Exigus
Lovely combination of rules and nice construction. Thanks!
on 2. August 2025, 17:22 by RedBarchetta
Agreed! Some theorems, some light coloring, don't forget Knight's move, and those dots do some work! Very cool, thanks.
on 2. August 2025, 07:54 by Snookerfan
Brilliant puzzle! When familiar with some theorems, the puzzle is not too hard. Thank you
