Sudoku: Fill every row, column and 3x3 box with the digits 1-9.
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 1 followed by column 1 (18 digits)
on 24. December 2023, 22:31 by shteev
I barrelled through this one, maybe I'm getting good at these entropy puzzles finally!
on 23. November 2022, 00:29 by sujoyku
Thank you for this great puzzle, Mad-Tyas! The combination of German whispers and the entropy constraint is a lot of fun.
on 22. November 2022, 12:23 by Snookerfan
I love these 2 x 2 entropy puzzles. This one was very nice and by exception approachable. Thank you!