Sloopoku (Simple Loop Sandwich Sudoku)
(Published on 6. October 2022, 16:39 by Piatato)
This is a hybrid between Simple Loop and Sandwich Sudoku.
Enjoy! :-)
Rules:
1) Normal Sudoku rules apply. Every row, column, and box must contain the digits 1-9 with no repeats.
2) Normal sandwich rules apply. Clues outside the grid show the sum of the digits "sandwiched" between 1 and 9 in the corresponding row/column.
3) Draw a loop that travels orthogonally through every cell except the cells that contain the digit 1. The loop is not allowed to branch, intersect or cross itself.
Links to the puzzle:
Solve on Penpa+ here (draw the loop with a green line for answer check to work).
Solve on F-Puzzles here.
Solve on Sudokupad here.
Solution code: All digits in row 6, left to right, plus the length of each individual loop segment in row 6. Cells with vertical segments count as 1.
Comments
on 13. February 2024, 18:01 by Christounet
Enjoyed this ! Very cool loop puzzle ! Thanks :)
on 18. February 2023, 05:49 by Nordy
Wonderful :)
on 29. November 2022, 06:05 by KNT
awesome hybrid! thanks :-)
on 18. November 2022, 22:01 by Piatato
Improved the wording of the solution code description and the ruleset.
on 18. November 2022, 19:42 by Klausku
Loop and sandwich clues interact quite nicely. Very nice. Thank you
on 8. November 2022, 23:11 by glum_hippo
More of this kind of shenanigan please!
on 12. October 2022, 23:31 by Aaronomys
Clever sudoku and a nice use of sloop! I’m intrigued by the possibilities of sudoku-sloop hybrids!
on 8. October 2022, 11:34 by Piatato
Thanks to all of you for the lovely comments! :-)
on 8. October 2022, 09:27 by Jaekpuzzle
I'd never done a loop puzzle before, so I solved it as a sandwich without the loop logic until I was left with the 19 pairs (though it took a very long time). But the loop worked beautifully after that.
—
Thanks for solving it, even on hard mode. :P
Piatato
on 7. October 2022, 17:12 by Jesper
Good idea. Fun and smooth solve.
on 6. October 2022, 23:54 by Samish
very fun and fresh logic !
on 6. October 2022, 23:53 by PrimeWeasel
Loopalicious!
on 6. October 2022, 22:06 by Steven R
Lovely hybrid, thanks!
on 6. October 2022, 20:44 by Piatato
Fixed answer check
on 6. October 2022, 18:01 by cdwg2000
Very nice!
on 6. October 2022, 16:43 by filuta
very nice and approachable hybrid
