Normal Sudoku Rules apply. Every row, column and marked region in the puzzle must contain the digits 1-9 exactly once.
Additional Rules:
Global Entropy: Divide the digits 1-9 into low(123), middle(456), and high(789) digits. Every 2x2 cell group in the puzzle must contain at least one digit of each group.
X-Sums: Digits on the outside of a row or column indicate the sum of the first n digits, n being the first digit in that row or column.
Solution code: Row 4
on 7. December 2025, 16:05 by Jasura
I got shockingly far forgetting that it's an entropy puzzle, lol. did eventually read the rules again, and then it was a lovely solve path
on 4. December 2025, 06:12 by CarnacTheMagnificent
Excellent puzzle. Coloring the entropic cells goes a long way in solving this puzzle.
on 2. December 2025, 11:11 by googuee
Nice puzzle! Thanks for sharing.
on 30. November 2025, 17:58 by Mad-Tyas
Nice and smooth Entropy puzzle!