Assorted Sandwiches Sudoku
(Published on 15. June 2020, 14:37 by stephane.bura)
Normal Sudoku rules apply.
A large number on the side of the grid indicates the presence of a sandwich in the corresponding row or column. A sandwich has two digits that act as its boundaries. The large number is the sum of all the digits between those boundaries. The boundaries are the two digits of the large number, in any order.
For instance, the 18 clue means that the digits between the 1 and the 8 in this column add up to 18.
The small numbers indicate how many sandwich boundaries are present in this row or column. A digit can be a boundary for several sandwiches but is only counted once.
In a standard sandwich Sudoku, this number is always 2; in this puzzle, it varies.
However, even if this number is bigger than two, there is at most one sandwich per row or column.
Enjoy!
Penpa-Edit link for this puzzle to play it online.
Gimmicked f-puzzles link . You should remove "Highlight Conflicts" in the settings for a better experience.
Solution code: Column 4, column 5
Comments
on 7. August 2026, 01:31 by widjo
Really cool puzzle. So much unique and refreshing logic and the way that it all resolves by the end is very satisfying.
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Thanks! :)
And thank you for going through my whole catalogue. May I ask what has prompted you to do so?
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Oh well I like going through and completing all the backlog when I find someone who makes interesting puzzles. I think I found one of yours through a comment on someone else's puzzle I enjoyed, and it was right after finishing a different catalogue so I started going through yours. Also I do all my sudoku on my phone so it's been very helpful that rich_27 has been making sudokupad links for every puzzle :)
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Well, I'm honored and I hope you enjoy the rest of your journey :)
on 28. September 2025, 21:17 by rich_27
I really enjoyed this, what a lovely puzzle concept.
I spent way to long trying the same logic path assuming I'd made a mistake in executing it without realising I'd mistranscribed column 3's small number as a 2. I guess it felt like it fit because it has a nice effect on the puzzle's logic, but it does break it (unsurprisingly!).
Here's my sudokupad link, all small numbers correct: https://sudokupad.app/eap5lfrrs9
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Thanks!
You're now encountering harder puzzles but they don't seem to faze you :)
Congrats!
on 17. October 2023, 11:21 by ICHTUES
Mindblowing puzzle!
C'était magnifique.
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Merci :)
on 14. January 2021, 15:21 by MagnusJosefsson
Great puzzle! I really like puzzles where the solution path involves significant logical discoveries that require quite a bit of thinking to achieve while proving the solution a second time would be relatively fast. This is definitely one of those puzzles -- very satisfying!
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Thanks :)
on 13. January 2021, 13:12 by Statistica
I was motivated by Richard's no. 303 to solve this one, but this is harder...
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It is!
Congrats :)
on 22. July 2020, 16:06 by Mody
Mir hat es großen Spaß gemacht, aber ich fand es ziemlich schwer, (was aber auch daran liegen kann, dass ich mich nicht sehr schlau angestellt habe ;) )
on 5. July 2020, 17:01 by stephane.bura
Precision on the small numbers.
on 5. July 2020, 16:19 by stephane.bura
Added f-puzzles link.
on 2. July 2020, 07:57 by Puzzle_Maestro
@Richard that is correct.
on 2. July 2020, 07:37 by Richard
Do I understand the rules right: the small 6 on top of column 9 means that there are at least four sandwich boundaries in column 9 that belong to horizontal clues?
on 16. June 2020, 02:26 by Yohann
Very nice. Was worth the headache
on 15. June 2020, 15:14 by stephane.bura
Precision about the number of sandwiches.
