Dismay (Region Sum Lines Sudoku)
(Published on 29. June 2022, 22:50 by Qodec)
- Normal sudoku rules apply: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
- Region sum lines: Blue lines are region sum lines. The sum of the digits on a line within a particular region must be the same for all of the regions the line passes through. The sum applies to each individual visit a line makes to a region. Different lines may have different sums.
You can play this puzzle online using:
- CTC app (Sudokupad): https://tinyurl.com/52d8rywd
- f-puzzles: https://f-puzzles.com/?id=224fqgjc
Hope you'll have fun!
Solution code: Row 8 and column 8. I.e. the 9 digits in row 8 from left to right, followed by the 9 digits in column 8 from top to bottom, for example: 123456789123456789
Comments
on 7. September 2024, 18:10 by StephenR
Thanks, some sublime deductions to be made. Can't recall a more stubborn puzzle, it kept refusing to collapse. Perhaps I missed something.
on 12. June 2023, 21:46 by Myxo
Brilliant puzzle!
on 18. November 2022, 02:01 by cpx86
Brutal, wonderful and rewarding. Quite happy with myself for having solved a 5-star qodec puzzle :)
on 11. July 2022, 08:12 by Xendari
I'm just in awe of this puzzle. 100 minutes of beautiful, brutal logic - some parts felt like magic! Thank you so much for setting & sharing this :)
on 3. July 2022, 04:22 by wenchang
Nice puzzle. https://youtu.be/Cn2XnU9wTls
on 2. July 2022, 22:36 by peacherwu2
Elegant break-in and final crack, well worth the time!
on 2. July 2022, 15:51 by Agent
Region sum lines, but I don't think the logic is remotely similar to anything I saw before. It was a brutal puzzle, but very beautiful.
on 1. July 2022, 21:26 by Snookerfan
What a great puzzle! Thank you so much Qodec for 2,5 hours of joy!
on 1. July 2022, 19:08 by Christounet
Beautiful designed "expressive face" sudoku ! Lovely break-in and a bit of struggle for me near the end to find the "weak cell" that disambiguates the whole thing. Thanks.
on 1. July 2022, 01:59 by cdwg2000
Very Nice!
on 30. June 2022, 20:34 by Niverio
Absolutely wonderful!
on 30. June 2022, 08:40 by Playmaker6174
Beautiful design and some sneaky deductions in there, got some trouble in the later half but luckily my scanning abilities hit that soft point :)
