Square Deal
(Published on 7. September 2026, 18:36 by ul-Rhymm)
Each digit, 1-9, appears exactly once in each row, column, and 3x3 region.
German Whisper: adjacent digits along green lines must have a difference of at least 5.
Entropy Lines: Along peach lines, each set of 3 consecutive digits must have one low (1/2/3), one medium (4/5/6), and one high (7/8/9) digit. Digits on a 2-cell line must be from different entropic groups.
Little Killer: Along diagonals, digits add to the indicated value.
Solution code: Row 1, left to right
Comments
on 16. September 2026, 04:36 by PKMKII
Beautiful logic, lots of unraveling that looks obvious in hindsight but tricky to figure out.
on 9. September 2026, 05:14 by emoney1374
Brilliant puzzle!
on 8. September 2026, 17:48 by Franjo
Thank you very much for creating and sharing this beautiful puzzle.
on 8. September 2026, 12:39 by Saltensity
Some hard deductions for me and almost got stuck again near the end, but still a very minimalist and amazing puzzle :)
on 8. September 2026, 11:36 by Snookerfan
Gorgeous puzzle with a very satisfying solve path, thanks!
on 7. September 2026, 23:13 by wuc
Cool minimalistic entropy puzzle thx.
on 7. September 2026, 20:24 by StefanSch
Nice!
