Middle Ground
(Published on 28. August 2026, 15:55 by StrandofIvy)
Normal Sudoku: Place the digits 1–9 in every row, column, and 3×3 box without repeats.
Global Entropy: Every 2×2 region of cells must contain at least one low digit (1–3), one middle digit (4–6), and one high digit (7–9).
German Whispers: Adjacent digits along a green line must differ by at least 5.
Kropki Dot: Digits separated by a black dot have a 1:2 ratio. Not all possible dots are necessarily given.
Puzzle:
Solution code: Please enter row 9
Comments
on 29. August 2026, 16:34 by 9Rookienumbers
Fantastic puzzle, clever use of the entropy constraint
on 29. August 2026, 08:35 by 9Rookienumbers
Fantastic puzzle, clever use of the entropy constraint
on 29. August 2026, 03:32 by BigHead
Excellent puzzle thank you!
on 29. August 2026, 01:07 by pmays123
Lovely puzzle! It was very satisfying. Thanks for sharing :)
