↻ Somedoku-Loop ↺
(Published on 27. April 2024, 07:05 by ElChiglia)
---- RULES ----
Somedoku rules apply: Fill the (inner) 9x9 cells each with one of the digits from 1 to 9. Every Nth row and every Nth column each contains N unique digits while the remaining ones must be repeats.
Parity Loop: Draw a single 1-cell-wide loop of orthogonally connected cells into the grid that enters no cell more than once. Adjacent digits along the loop have opposite parity. (Note, the loop can touch itself!)
Circles: Digits in circles count how many of the (up to) 9 surrounding cells (including the cell itself, if applicable) are part of the loop.
Kropki Dots: Cells connected by a white dot contain consecutive digits.
(The outer ring of cells can be used to keep track of used/unused digits per row/column. It has no further meaning for the solve and is ignored for the solution check. If you don't like it, please refer to the borderless version.)
---- LINKS ----
Solve this puzzle using SudokuPad
Solve this puzzle using SudokuPad (no borders, plain 9x9)
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 | ||
|---|---|---|---|---|
| Deconstructed- RSL-Loop |
Deconstruction | Region Sum Line | Little Killers | |
| Whispering-Sequence- Loop |
Circles | Dutch Whispers | Kropki Dot | |
| Fluisterende Loop | Star Battle | Dutch Whispers | Korpki Dots | |
| Yin-Yang-Loop | Yin Yang | Region-Sum-Line | Korpki Dots | |
| Entropic-Sequence- Loop |
Circles | Modular Line | Thermometer | |
| Find-the- Whispering-Loop |
Arrows | German Whispers | - | |
| Country-Road- Loop |
Country Road | Parity Line | Irregular Sudoku |
|
| Modular-Sequence- Loop |
Circles | Modular Line | Thermometer | |
| Summing-Zipper- Loop |
Counting Cells | Region Sum Line | Zipper Lines | |
| Mid-Loop | Mid-Loop logic |
Entropic Line | Kropki Dots | |
| Whispering-Zipper- Loop |
Counting Cells | Dutch Whispers | Zipper Lines | |
| Super Bowl Loop |
Oponents, out-of-bounce |
Polarity Line | Kropkis, XV, Nabner, Zipper |
|
| Linesweeper Loop |
Linesweeper clues |
Parity Line | Little Killers | |
| Modular-Zipper- Loop |
Counting Cells | Modular Line | Zipper Lines | |
| 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 1. June 2024, 04:11 by virus_dave
My first time doing a somedoku style puzzle, so that probably made it seem much harder than it actually was. What a lovely puzzle!
on 25. May 2024, 08:08 by QuiltyAsCharged
Excellent puzzle! I found it quite challenging, because there are just so many ways the path can go and it's tricky to know where to look next. But it reveals its secrets if you stick with it.
on 7. May 2024, 05:54 by yanggang
Brilliant! Extremely consistent difficulty throughout the solve.
on 29. April 2024, 18:46 by br3akingp01nt
This was an amazing puzzle! Brilliant logic throughout.
on 28. April 2024, 13:08 by samuel1997
Brilliant! The parity loop and somedoku were combined nicely and gave me lots of fun! Thank you!
on 27. April 2024, 13:17 by sorryimLate
Beautiful puzzle! For me it felt very hard to define the route of the loop in the end. Maybe I missed some logic or just had a bad brain day.
on 27. April 2024, 12:39 by lmdemasi
An impressive combination of rule sets from a loop creation master. This worked amazingly well.
on 27. April 2024, 10:35 by Snookerfan
Great puzzle! Lots of fun and cool deductions. Thank you
