▣ Linesweeper Loop ▣
(Published on 3. February 2024, 10:43 by ElChiglia)
---- RULES ----
Normal Sudoku rules apply: Fill the grid with digits 1 to 9 appearing once each in every row, column, and 3x3 box.
Parity Loop: Draw a single 1-cell-wide loop of orthogonally connected cells into the grid that enters no cell more than once. The loop acts as a Parity Line. Adjacent digits along the loop have opposite parity. Note, the loop can touch itself.
Squares: Digits in squares count how many of the up to 8 surrounding cells are part of the loop while cells with squares themselves are not on the loop.
Little Killers: A clue outside the grid is the sum of the digits along the indicated diagonal.
---- LINKS ----
Solve this puzzle in the CtC app
Solve this puzzle on f-puzzles.com
This Sudoku is part of my series of "build-your-own-loop Sudokus". If you liked solving this puzzle or if you prefer other combinations of loop logic and constraints, feel free to give the other sudokus of the series a go too:
| Loop Logic | Loop Constraint | Further Constraints | ||
|---|---|---|---|---|
| Modular-Zipper- Loop |
Counting Cells | Modular Line | Zipper Lines X-clues |
|
| Balance Loop | Balance clues | Parity Line | Little Killers | |
| Entropic-Zipper- Loop |
Counting Cells | Entropic Line | Zipper Lines X-clues |
|
| Hiking-through- the-Fog Loop |
Signposts | Dutch Whisper, Polarity Line |
Kropki Dots X-clues |
|
| Renbanimo Loop | Pentominos Guiding Cells |
Renbanimos | Kropki Dots Odd cells |
|
| Deceiving Loop | Wrogn Clues | Wrogn Clues | 9 different constraints |
|
| Count-the- Whispers Loop |
Counting Cells | German Whispers | Kropki Dot | |
| Whisper-me- Sum-thing Loop |
Line-sums | German Whispers | Kropki Dots | |
| Road Running Loop |
Road Runner | Parity Line | Kropki Dots | |
| Magically Modifying Loop |
- | Incrementers, Decrementers, Nullifiers |
Magic Squares, Killer cages, Kropki Dots |
|
| Skiing Loop | Gates | German Whispers | Kropki Dot, Between Lines |
|
| Behaving Loop | 3x3 boxes | Polarity Line | Kropki Dots | |
| Magical Loop | Guiding cells | Modular Line | Magic Squares | |
| Foggy Loop | Guiding cells | Parity Line | Fog of War, Killer Cages |
|
| 10-Suȵ Loop | Moon-or-Sun | 10-Line | Killer Cages | |
| Counting Loop | Galaxies | Counting Line | Killer Cages, Kropki Dots, Quadruple Clues |
|
| Shining Loop | Moon-or-Sun | Parity Line | Killer Cages | |
| Interfering Loops | Slitherlink + Masyu |
Entropic Line + Parity Line |
Killer Cages | |
| Slithering Loop | Slitherlink | Entropic Line | Killer Cages, Little Killer |
|
| BigBang Loop | Galaxies | Parity Line | Row/Column Indexer, Kropki Dots |
|
| Summing Loop | Star Battle | Region Sum Line | Killer Cages, Skyscraper, Kropki Dots |
|
| Whispering Loop | Star Battle | German Whispers | Sandwich Sum |
Solution code: Column 8, followed by row 8
Comments
on 11. February 2024, 19:17 by lmdemasi
I'm so used to loop puzzles where the loops does not touch itself that I had to keep overriding my urges on how I thought the snake should look.
Great puzzle. The one little killer puts in a surprising amount of work!
on 5. February 2024, 17:27 by Fra314
Fantastic loop puzzle, great flow and super fun!
on 5. February 2024, 05:00 by mthunter26
Really enjoyed this puzzle, very smooth solve. I think it's a very approachable 2*
on 4. February 2024, 12:42 by IAlreadyHaveAKey
Nice puzzle! Loops that can touch themselves always messes with my head a bit, but this had a lovely flow to it. Thanks for setting!
on 3. February 2024, 23:23 by thorscouts
This was the first puzzle of this type that we tried. We really enjoyed it!
on 3. February 2024, 17:52 by harwiltz
Really nice, felt miraculous that some of the digits could be disambiguated.
on 3. February 2024, 16:15 by yttrio
Another fun, smooth loop puzzle! I particularly liked how much disambiguation work the single little killer clue managed to do.
on 3. February 2024, 14:15 by ViKingPrime
A smooth, enjoyable solve.
on 3. February 2024, 13:32 by lordovol
Another great loop puzzle. Thanks
