X-Sandwich Sudoku
(Published on 1. July 2021, 20:09 by Lizzy01)
Rules:
Normal Sudoku rules apply.
Clues outside the grid give the sum of the digits sandwiched between the 1 and the 9 in the respective row/column.
Additionally, the filling of a sandwich behaves like an X-sum: the first digit inside the sandwich from the side of the clue equals the number of digits inside the sandwich (between the 1 and the 9). A question mark indicates an unknown sum, but the first digit inside the sandwich from the side of the clue still equals the number of digits inside the sandwich.
Try the puzzle online on f-puzzles.
Ratings and comments are highly appreciated.
Solution code: row 3, row 7
Comments
on 4. June 2023, 09:37 by Saskia
Nice :)
on 15. June 2022, 18:12 by panthchesh
That was fun. Thank you! :)
on 29. July 2021, 18:07 by Lizzy01
Thanks!
on 29. July 2021, 00:26 by SudokuExplorer
I particularly liked the logic to determine the first few crusts, thanks! :-)
on 28. July 2021, 23:43 by RockyRoer
OH!! Missed that the first time... The location of the clue provides the location of the first digit inside the sandwich filling x-sum! I'm gonna have to give this one another go now....
on 25. July 2021, 18:14 by Lizzy01
Added tags
on 2. July 2021, 10:15 by wilsig
Excellent puzzle!!
-Thank you!
