Sudoku: Fill every row, column and 3x3 box with the digits 1-9.
Renban: Digits on a purple line form a set of consecutive, non-repeating digits in any order.
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 3. January 2023, 14:22 by Snookerfan
Great puzzle! Thank you again and keep them coming!
-Reply: Thank you for your kind comment! It's always a pleasure to read that someone enjoys the entropy constraint cause I love to set puzzles with it.
Therefore more entropy sudokus will definitely come.
The next one will be my 25th published entropy sudoku and it will be a special one.