Returner Loop: Draw a single 1-cell-wide loop of orthogonally connected cells into the grid that starts at the revealed cell and moves only right, up, and down until it reaches the end zone (column 9). It can't go out of bounds (rows 1 and 9), and must avoid all defenders (by not entering any of the 5 cells adjacent to a drawn defender to the left, top, or bottom, see drawing). Once it reaches column 9, it moves straight down to R9C9, and then straight left all the way back to R9C1. The loop cannot touch itself, not even diagonally. Digits on the loop alternate between even (2468) and odd (13579). |
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Solve this puzzle in the CtC app
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 | ||
---|---|---|---|---|
Linesweeper Loop |
Linesweeper clues |
Parity Line | Little Killers | |
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
on 1. July 2024, 19:03 by ostio456
Fun idea!
on 11. May 2024, 16:20 by virus_dave
A fun and (relatively) straightforward puzzle. Another enjoyable contribution from the author. This one flowed very seamlessly.
on 14. February 2024, 08:50 by filz
This was a very nice puzzle - thank you very much, really enjoyed it!
on 13. February 2024, 11:45 by Christovaneeden
very nice puzzle. Flowed nicely after break in
on 10. February 2024, 13:07 by DukeofKent
Really flowed nicely after the break in - enjoyed this more than I would the actual Superbowl
on 10. February 2024, 12:22 by ckaiser
This was cool! I enjoyed the experience of revealing a defender and having to dodge and solve along the way. Good idea for a Super Bowl weekend puzzle