Lobster Bisque (Chaos Construction)
(Published on 23. November 2023, 21:57 by Tacosian)
- Divide the grid into regions, each consisting of nine orthogonally connected cells. Each row, column and region must contain the digits 1 to 9 once each.
- Clues outside the grid show the sum of a string of digits starting X cells from the direction of the clue, where X is the first digit in that direction. All cells that are part of the sum (the "sum cells") must belong to the same region. The cells directly before and after the sum cells in the row/column of the clue must not belong to the same region as the sum cells, if they are part of the grid.
- A question mark indicates that any nonzero sum is acceptable.
SudokuPad link: SudokuPad
Penpa+ link: Penpa+
Solution code: Row 3. Where there is a region border, type X (uppercase). In the 6x6 example, the solution code for row 3 would be 2X536X4X1.
Comments
on 12. March 2024, 19:05 by Silverstep
Mind-blowing step in the midsolve.
on 28. January 2024, 01:46 by bodemeister
Started this on a plane ride home and finished it a month later on another plane. Amazing set and enjoyable solve. Thanks!
on 29. December 2023, 19:47 by KNT
masterfully set, and not too hard! Surprising and smooth throughout. thank you very much.
BTW: solution codes are caps and space-independent. '1x2x3' and '1X 2 X3' both register as the same code.
on 28. December 2023, 23:43 by PrimeWeasel
Really enjoyed that, excellent setting yet again!
on 28. December 2023, 18:16 by cam
Oh my God. I can't believe I finally finished this puzzle. Holy crap, that was challenging, but satisfying. It's hard to believe there are only 81 squares here.
Anyway, amazing puzzle! Thanks so much :)
on 3. December 2023, 21:46 by Christounet
Yay,finished it ! I had to stare at the grid for quite some time before I understood clearly how to start this. Then it was very enjoyable solve, with fun logic throughout. Thanks :)
on 29. November 2023, 07:35 by madhupt
A stunning puzzle! Never easy, in fact very hard, but always giving something to go on. Had to keep staring at the grid trying to make out the way forward but after the break-in it can be quite smooth if one can hold of the logic. Thanks a lot for sharing. I think Simon would love solving it on CtC.
on 25. November 2023, 15:33 by samuel1997
What a brilliant puzzle! Thank you!
on 25. November 2023, 13:17 by Snookerfan
Brilliant puzzle! Thank you
on 25. November 2023, 01:27 by Lavender Gooms
Lovely! Very well done.
on 25. November 2023, 00:20 by ONeill
Very nice. Like Samuel there were many points I thought I’d broken it, but hadn’t.
on 25. November 2023, 00:00 by Jesper
Very nice, thanks!
on 24. November 2023, 22:50 by marcmees
very nice construction. thanks.
on 23. November 2023, 23:46 by Tacosian
Re-added penpa+ link with correction.
on 23. November 2023, 23:21 by Tacosian
Removed a puzzle link with a mistake.
