Flip the Script (Entropy Mirror + RSL)
(Published on 5. November 2025, 13:20 by sujoyku)
Rules:
- Normal sudoku rules apply, i.e. each row, column, and 3x3 region has to contain the digits from 1 to 9 once each.
- Entropy Mirror: We consider the digits from 1 to 9 as three entropic groups: low (1, 2, 3), medium (4, 5, 6) and high digits (7, 8, 9). The diagonal from r1c1 to r9c9 acts as an entropy mirror. Each cell has the same entropy as the cell reflected in the mirror, i.e. if r2c6 contains a low digit, then r6c2 must also have a low digit.
- Region Sum Lines: Box borders divide the blue lines into segments with the same sum. (Different lines may have different sums.)
Here you can solve the puzzle online:
Solution code: Row 3 from left to right (9 digits in total)
Comments
on 20. November 2025, 23:03 by Lenivaya_Joppa
Thank you for this nice puzzle, dear sujoyku! :)
**
You are much welcome, Lenivaya_Joppa, thank you for your comment! I am glad you enjoyed it.
Kind regards, sujoyku
on 8. November 2025, 17:33 by BabyfacedBard
Finished my project on your catalogue! I set out to solve every sudoku in your catalogue that has solution check on sudokupad, and this is your latest one currently. Enjoyed it a lot, thank you for spoiling us all, sujoyku, with your creativity and mastery
on 8. November 2025, 17:33 by BabyfacedBard
Finished my project on your catalogue! I set out to solve every sudoku in your catalogue that has solution check on sudokupad, and this is your latest one currently. Enjoyed it a lot, thank you for spoiling us all, sujoyku, with your creativity and mastery
on 7. November 2025, 21:20 by BabyfacedBard
Finished my project on your catalogue! I set out to solve every sudoku in your catalogue that has solution check on sudokupad, and this is your latest one currently. Enjoyed it a lot, thank you for spoiling us all, sujoyku, with your creativity and mastery
**
Congratulations on the completion, BabyfacedBard, and thank you for your comment! It is great to hear you enjoyed my puzzles.
Kind regards, sujoyku
on 7. November 2025, 18:51 by fractalminding
Hello, sojoyku. Cool sodoyku! ????
**
Thank you for your comment, fractalminding! I honestly don't know what to say. :)
Kind regards, sujoyku
on 6. November 2025, 23:47 by damo_89
Very nice opening. Not brutally hard but a little tricky to fit all the parts together
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Thank you, damo_89! I am glad that you liked the opening.
Kind regards, sujoyku
on 6. November 2025, 07:29 by Wuschel
Cool puzzle. Little bit too early for *** but still loads of fun.
Thanks!
**
You are much welcome, Wuschel, thank you for your comment! It is great to hear you had a fun solve.
Kind regards, sujoyku
on 6. November 2025, 03:09 by antiknight
Interesting break-in and puzzle! I've enjoyed the beginning the most :)
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Thank you for your comment, antiknight! I am glad you liked the opening and found the puzzle to be interesting.
Kind regards, sujoyku
on 5. November 2025, 23:49 by ketchup_monster
Beautiful puzzle with really enjoyable break-in. The mirror construction was so elegant, and the clues just pieced together perfectly. Thanks, sujoyku!
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Thank you for your kind words, ketchup_monster! It is great to hear that you enjoyed the puzzle.
Kind regards, sujoyku
on 5. November 2025, 22:58 by therealsillypenguin
The flow of this puzzle is so nice! Thank you for sharing
**
You are much welcome, therealsillypenguin, thank you for your comment! I am glad that you liked the flow of this puzzle.
Kind regards, sujoyku
on 5. November 2025, 21:56 by Calvinball
This puzzle embodies everything I enjoy about the mirror constraints, lovely stuff in here!
**
Thank you for your kind words, Calvinball! I am glad that you liked this mirror construction.
Kind regards, sujoyku
on 5. November 2025, 19:22 by Snookerfan
Great puzzle with a lovely break-in! Real fun and joy. Thank you
**
You are much welcome, Snookerfan, thank you for commenting! I am glad that you liked the puzzle and enjoyed its break-in idea.
Kind regards, sujoyku
on 5. November 2025, 14:58 by Tinnifer
Amazing puzzle! A little tricky for me to wrap my head around the mirroring effect initially but once I did it solved really smoothly. Thanks:)
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You are much welcome, Tinnifer, thank you for your comment! As powerful of a constraint it is, the mirroring needs some getting used to. I am glad that you enjoyed the solve.
Kind regards, sujoyku
