Sightline Sum Whisper Loop
(Published on 7. June 2025, 01:49 by yttrio)
Rules:
Normal Sudoku rules apply.
Draw a one-cell-wide loop of orthogonally connected cells. The loop may not touch itself, not even diagonally.
The loop acts as a German Whispers line (i.e., adjacent digits on the loop must have a difference of at least 5).
Cells with small numbers in the corner are on the loop. This number gives the sum of all loop cells (including itself) seen from that cell in all horizontal/vertical directions combined, where non-loop cells block the vision. Digits may repeat in a sum if allowed by other rules.
6x6 Example:
The image below shows a sample 6x6 puzzle and solution with the same rule set.
Note: For 6x6 Sudoku, adjacent digits on a German Whispers line must have a difference of at least 3 (instead of the usual 5)
Play the example 6x6 in SudokuPad.
Solution code: Digits on the loop in row 4 (left to right) followed by digits on the loop in row 6 (left to right)
Comments
on 16. June 2025, 22:20 by Christounet
5 clues, ha ha ! Well done :)
on 11. June 2025, 05:35 by virus_dave
WAY too quick & easy to be an yttrio puzzle, but super enjoyable so i guess it is! :)
on 10. June 2025, 22:58 by madhupt
So smooth, so delectable! So few clues, still it unwinds like a miracle.
on 8. June 2025, 22:05 by Welcome Paragon
This is why you're one of my favorite setters <3
on 7. June 2025, 20:43 by Exigus
Just amazing that it solves with so few clues. Thanks!
on 7. June 2025, 18:57 by damo_89
Lovely. 2 stars when you remember all the rules
on 7. June 2025, 16:41 by wuc
I love this tricky but fair loop building puzzles. Looking forward to every addition. Big thanks.
on 7. June 2025, 16:27 by Franjo
Brilliant setting for a nice (and quite easy) whispers loop. Thank you very much for creating and sharing this lovely puzzle.
on 7. June 2025, 04:30 by Juiceshack
Well done :)
on 7. June 2025, 02:39 by Calvinball
Another classic example of yttrio doing yttrio things. Loved it.
