Purple vs Green (Entropy Sudoku)
(Published on 4. April 2023, 10:14 by Mad-Tyas)
Sudoku: Fill every row, column and marked 3x3 box with the digits 1-9.
Renban: Digits on a purple line form a set of consecutive, non-repeating digits in any order.
German Whisper: Adjacent digits on a green line must differ by at least 5.
Entropy: The low digits (1, 2, 3), middle digits (4, 5, 6) and high digits (7, 8, 9) are defined as three different groups. In the finished grid each 2x2 box has to contain at least one digit of each group.
Have fun solving!
Solution code: Row 9 followed by column 5 (18 digits)
Comments
on 25. March 2024, 15:07 by Mikemerin
Wonderful logic in the break in, amazing how the 1 helps disambiguate everything so seamlessly in such a symmetrical puzzle, and everything else just flows from there.
on 12. January 2024, 11:40 by shteev
Couldn't find the break-in at all. The early puzzle is full of interesting deductions, but I could find no way to write many of them in the grid, even using simplifying placeholders, in such a way that they helped me see how they interacted. Eventually I bifurcated and filled in the entire puzzle relatively trivially from a single assumptiom. Not my favourite type of puzzle.
on 5. September 2023, 10:21 by Snookerfan
Excellent part of a fantastic series! Thank you
on 26. July 2023, 01:49 by quantumquark1
The break in was quite tricky for me, but it went smoothly once I found it. There were some really beautiful moments in there, thanks so much for the puzzle!
on 5. April 2023, 04:20 by Allagem
Got some significant help from Crusader, but together we found the solution path and I understood it all. Fantastic setting!
on 4. April 2023, 21:40 by StefanSch
Amazing consruction!
on 4. April 2023, 20:28 by bansalsaab
I couldnt find the intended solution path but solved it by bifurcation.
