Toasted Sandwiches: Warmup
(Published on 26. March 2026, 17:42 by Gankra)
Normal Sudoku Rules Apply.
Thermos: Digits in thermometers strictly increase from the bulb to the tip.
Sandwiches: Numbers outside the grid indicate the sum of the digits sandwiched between 1 and 9 in that row or column (excluding the 1 and 9).
Toasted Sandwiches: Every given sandwich is also a thermometer (including the 1 and 9). You must determine the orientation.
Disjoint Thermos: thermometers (whether normal or delicious) may not cross or share digits.
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Additional NotesSince I just came up with this ruleset I wanted to make a hopefully fairly easy and accessible first version.
...Except both me and a checker made the exact same mistake and this was originally published in an unsolvable form. Here's the fixed version, apologies!
Solution code: The digits on the bottom row, left to right.
Comments
on 4. April 2026, 12:06 by James Moriarty
Thank you for creating this puzzle. The idea of sandwiches being thermos as well adds a crunchy interaction between the clues.
Hope we can see more of these!
on 31. March 2026, 00:38 by Rjw78
There seems to be an error. Sudokupad says I’ve completed however the digit entered in R9:C3 does not match the thermometer Rule?
on 29. March 2026, 23:54 by James Moriarty
Thank you for creating this puzzle. The idea of sandwiches being thermos as well adds a crunchy interaction between the clues.
Hope we can see more of these!
on 29. March 2026, 18:54 by VitP
first thermosandwich is forced. after that, the restrictions are severe.
--> level 1
on 27. March 2026, 19:31 by Franjo
Thank you very much for creating and sharing this hot sandwich. Good taste!
on 27. March 2026, 09:57 by Exigus
Fun ruleset, thanks!
on 26. March 2026, 21:15 by wuc
Rules work well. Great fun 2* thx.
on 26. March 2026, 20:06 by Gankra
Several of the thermos have been changed to fix a mistake both me and my checker made (the puzzle only had a solution if you forgot the sandwiches-are-thermos rule in one place).
The break in and most of the logic remains the same.
