You can find more Entropy sudokus as well as my other puzzles here
Rules:
Sudoku: Fill every row, column and 3x3 box with the digits 1-9.
Killer: In cages marked with a black dashed line digits must not repeat and have to add up to the total given in the top left corner of the cage.
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.
Dead Space: In the area surrounded by a red dashed line the Entropy rule may be broken. This exception only applies to 2x2 boxes that are completely within this area.
Have fun solving!
Solution code: Row 5 followed by column 5 (18 digits)
on 31. March 2023, 01:37 by AParliamentofOwls
Really nice, thank you!
on 31. January 2022, 19:23 by Mad-Tyas
Added Entropy tag
on 29. December 2021, 20:22 by PinkNickels
I usually struggle with complex killers and I'd not done an entropy puzzle before but this one made me a fan of this variant. Very well constructed. Thank you for this!
on 28. December 2021, 18:01 by thoughtbyte
Another excellent, very fun entropy puzzle!
on 28. December 2021, 16:59 by Mad-Tyas
Thank you all very much for solving and rating! I didn't expect such overwhelming feedback.
on 28. December 2021, 02:34 by titus2323
This was a beautiful puzzle. I've tried some of the previous ones, but struggled with breaking into them. I really loved how this one unwound, and how the entropy constraint applied at really critical junctions.
-Reply: Thank you for not being discouraged by the previous Entropy puzzles! I'm glad you enjoyed this one.
on 27. December 2021, 18:39 by davidjshort
An approachable Entropy puzzle, and a great introduction to the puzzle type. thanks
-Reply: Thank you for solving and your comment! I agree that this one turned out to be a better introduction to the Entropy constraint than the first puzzles I uploaded with it.
on 27. December 2021, 16:50 by DVFrank
Sehr schöner und flüssiger Lösungsweg! :^)
-Antwort: Vielen Dank! Freut mich, dass es Dir gefallen hat :)
on 27. December 2021, 10:37 by Elliott810
Very nice puzzle! Love the entropy ruleset! Thx:)
-Reply: Thank you for your comment! I'm glad you had fun with the puzzle and the ruleset.