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Normal sudoku rules apply.
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Entropy. Each 2x2 box in a grid has contain low digit {1,2,3}, middle digit {4,5,6} and high digit {7,8,9}.
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Each orthogonally adjacent digits are non-consecutive.
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Black dots connect cells with a 2:1 ratio.
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A line of one type of entropy. All cells lying on the line belong to one of the types of digits:
low digit {1,2,3}, middle digit {4,5,6} or high digit {7,8,9}.
SudokuPad link
Solution code: Row 1
Solved by 5381, StefanSch, jhsa, maglia, Karitsu, matthiewhaines, Fisherman, Joyofrandomness, Pairot, Photyne, Mathemagier, meloettaHD, 9Rookienumbers, HazelTheColor, Arlo Lipof, SKORP17, Raistlen, Zibl, ... mogest, frizz, Bos, snuuba, zygeist, Blei42, leszeks, garycblack, radium, Sonyaire, Mavel, gmart, MaxSmartable, Swesie, ThatGuyGust, 0203017, GabyUnalaq, aldesu, pampampampam, pjot, MurtyQ
Comments
on 6. February 2026, 07:26 by pampampampam
Интересное решение).
on 29. October 2025, 05:30 by e401
That was fun, fractal
on 4. September 2025, 02:34 by SanFranSam
Not sure i would have figured out to color the grid if i hadn't seen the comments.
on 3. September 2025, 14:43 by varbrad
Really nice colouring puzzle! Thanks :)
on 30. August 2025, 00:57 by Gnubeutel
very nice and easy puzzle.
I don't think i used the global entropy though. Single entropy lines were tight enough.
on 29. August 2025, 14:52 by Karitsu
Nice snack - I suspect it would be an excellent introduction to coloring for someone who’s never done a coloring puzzle!