can i pet that dog!?
(Published on 15. May 2025, 07:29 by aqjhs)
While discussing some Copycat puzzles, ChinStrap conjectured the existence of copy-dog puzzles and this is my attempt to make them happen.
Thanks to ViKingPrime for coining the Doppel-Dög moniker for these kind of loop/modifiers.
- Normal sudoku rules apply.
-
Doppel-Dög loop:
- Draw an orthogonal non-branching closed loop that doesn't cross or touch itself, not even diagonally.
- The loop "starts" at the cell marked with the dog and is considered to be oriented in the direction indicated by the arrow (i.e. r6c6 and r6c7 are in the loop).
- A cell on the loop with a digit D will have a value equal to the cell D steps away along the loop in the orientation given by the arrow.
- Cells not on the loop will have a value equal to the digit in them.
- Adjacent digits (not values) along the loop must have a difference of at least 5.
- Values in a cage sum to the indicated total.
- Cells marked with a circle are not part of the loop and have a digit that equal to the count of the, up to 8, neighboring loop cells.
- Clues outside the grid show the value sum of loop cells in the indicated row/column.
Example: The numbers in red show the value of each cell. The dog cell takes its value from the cell 9 steps ahead along the loop.
Another Doppel-Dögs:
- please, can we keep him!?
- did you say walkies!?
- yo tenía diez perritos
- nopil nahual
- Convection Currents by The PedallingPianist
- Doppel-Dög Sandwich by phil_the (hat)
- Tentropic Terrier by Scojo
- a changed man
Solution code: Values on row 5
Comments
on 29. July 2025, 18:38 by aqjhs
more Dögs
on 22. May 2025, 16:12 by wuc
Got the rules working on this. Great rewarding 3* thx. Now I try to tackle the other dögs.
on 21. May 2025, 01:51 by sporq
Nice logic, and a fun journey once you get the hang of how the rules interact.
on 19. May 2025, 11:29 by Snue
So lovely :)
It took me some hours, but I loved every second. Thanks for the puzzle :)
on 18. May 2025, 08:10 by fitzie
what a great introduction to this ruleset. a solid path for the dog and the solver. even getting the solution was fun.
on 18. May 2025, 01:43 by Scojo
Discovering the secret of this ruleset was a great feeling. Thanks!
on 17. May 2025, 14:52 by ViKingPrime
I was banging my head against a wall and then I had the thought... "did I miss something in the rules?" and it turns out I had. I remembered to read the rules this time (eventually)! I feel like I'm growing as a person.
Excellent puzzle, beautiful steps once you see them.
on 16. May 2025, 22:12 by davidemsa
This was very nice and that's a cool rule. I thought the rule was going to be mind bending, but it was easier to deal with than I expected.
on 16. May 2025, 08:59 by Exigus
That was amazing, thanks!
on 16. May 2025, 08:59 by Exigus
That was amazing, thanks!
on 16. May 2025, 07:37 by stramosk
absolute masterpiece!
on 15. May 2025, 22:57 by karlmortenlunna
Lovely puzzle!
