[New Constraint] Entropy Sudoku
(Published on 3. December 2021, 05:28 by Mad-Tyas)
For the presentation, however, I decided to show it pure and without other variants.
Rules:
Sudoku: Fill every row, column and 3x3 box with the digits 1-9.
Entropy: The low digits (1, 2, 3), middle digits (4, 5, 6) and high digits (7, 8, 9) are defined as three different groups. In the finished grid each 2x2 box has to contain at least one digit of each group.
Have fun solving!
Solution code: Row 2 followed by column 2 (18 digits)
Comments
on 20. July 2024, 11:56 by Snookerfan
So this is where it al started. Very nice, especially to see how the constraint has evolved from a relatively easy puzzle, easy because of all the experience I have built, to brutal monsters. Thank you
on 28. February 2024, 13:47 by Bankey
I have been a great fan of your entropy puzzles and have solved quite a few of them, but somehow this very first one had been eluding me! Today must be a lucky day (earlier today, I solved your "50th Celebration" puzzle.). Thanks, @ Mad-Tyas:).
on 3. September 2022, 06:36 by Richard
Nice concept!
Colouring is very helpful here, but as an old fashioned pencil and paper-solver you lack those, so I did a lot more scanning than necessary. :-)
on 31. January 2022, 19:26 by Mad-Tyas
Added Entropy tag
on 8. January 2022, 02:53 by Nordy
Very nice constraint! Had to start from scratch 3 times because of false assumptions and sloppy notations, but did not mind. There’s an impressive amount of varied logic packed into this puzzle
on 11. December 2021, 03:07 by pwfd
Really enjoyed the concept, thank you for making this.
This kind of coloring puzzle I can see much potential for a clear or almost clear board along with extra constraints.
on 9. December 2021, 18:24 by PrimeWeasel
Very nice! Took me 34 minutes, so more of a 3 star for me!
on 5. December 2021, 14:21 by Lizzy01
It took me 82 minutes across 2 days, but i did it! Almost half of which was me taking an embarassingly long time to find one, ONE(!), deduction, after which it was smooth again.
on 5. December 2021, 01:11 by SudokuExplorer
Very nice concept, thanks! :-)
-Reply: Thank you! I appreciate your solve and comment.
on 4. December 2021, 23:05 by MrBeachHut
Brilliant idea! Some lovely logic made for a nice smooth solve
-Reply: Thank you! I'm glad you liked the idea and the puzzle.
on 4. December 2021, 19:27 by RootsInWermland
Just wow! That was tricky in some places (at least for me). But at the same time - very beautiful and interesting logic. And when you do find the logic and the interactions it felt very rewarding. Very fun all the way through. Thanks :)
-Reply: Thank you very much! I really enjoyed reading your comment. I'll try my best to show more beautiful and interesting logic with this constraint.
on 4. December 2021, 16:24 by aruvi
brutal constraint, love to see it
-Reply: Thank you! You can look forward to see more puzzles with it.
on 3. December 2021, 20:30 by Playmaker6174
Nice concept, it really leads to some interesting deductions there :)
-Reply: Thank you for your comment! I'm pleased you find the idea interesting.
on 3. December 2021, 14:39 by Crusader175
Very interesting rules!
on 3. December 2021, 11:51 by SimiC
Loved it!
-Reply: Thanks for solving! I'm glad you enjoyed it.
