Entropy miracle 2
(Published on 25. January 2026, 11:42 by fractalminding)
Normal sudoku rules apply. Each 2x2 box in a grid has contain low digit {1,2,3}, middle digit {4,5,6} and high digit {7,8,9}.
This is the second sudoku in the Entropy Miracles series. You can find the others in my profile. All of them use the Entropy rule and have only six starting digits, with no additional clues or constraints. Enjoy solving!
Solution code: Row 1 (9 digits)
Comments
on 13. February 2026, 19:07 by Angara
Almost 2 hours for solving. Very satisfying in the end. Thank you
on 26. January 2026, 09:26 by Snookerfan
Excellent puzzle! Deserves a higher rating though. Some steps are tricky but absolutely fair. Thanks
Reply:
Thank you so much for your support! I was a little disappointed by the low rating, but I actually found this sudoku interesting.
on 26. January 2026, 04:17 by Aronana
in the end we had to guess a bunch to solve, How do you disambiguate the last few boxes, when all of the entropy constraints are solved?
Reply:
No guessing required. I used classic Sudoku techniques to solve it.
on 25. January 2026, 15:37 by Exigus
Really cool Puzzle. The ending was quite hard for me, might have missed something. Thanks!
Reply:
Thanks for the feedback. I understand that the difficulty of this sudoku is a bit uneven. The end result calls for non-standard techniques for variant sudokus. But within the chosen concept, there's not much room for maneuver.
