Which Line Is It Anyway?
(Published on 18. April 2023, 02:05 by marty_sears)
WHICH LINE IS IT ANYWAY?
Rules:
- RENBAN LINE: Contains a set of non-repeating consecutive digits, in any order.
- GERMAN WHISPER LINE: Adjacent digits along the line have a difference of at least 5.
- THERMOMETER: Digits are arranged in ascending order, from one end to the other, without repeats.
- REGION SUM LINE: Along the line, digits within each 3x3 box have the same total. The line visits at least two different boxes.
- PALINDROME LINE: The sequence of digits along the line reads the same in either direction.
- PARITY LINE: All digits on the line have the same parity.
- UNLUCKY LINE: Adjacent digits along the line sum to at least 13.
Normal Sudoku rules apply. Each of the seven line types listed below appears once in the grid.
You must determine which line is which.
CTC link: Click Here
Enjoy!
Solution code: Column 9
Comments
on 15. October 2024, 01:48 by jakestilesowen
Very enjoyable and cool concept. Thanks Marty.
on 20. November 2023, 18:56 by Trickyman
Be aware; due to my unfamiliarity with the unlucky lines, I very actively missed the aspect where it says adjacent digits sum to AT LEAST 13. Helped immensely. Overall a very nice solve and fantastic puzzle
on 3. October 2023, 01:01 by mrlemmelook
Really enjoyed this puzzle! Especially the start :)
on 5. May 2023, 05:50 by KyleBaran
The break in took me some time because I was not familiar with Unlucky Lines. For future solvers: note that it says ADJACENT cells on the line, not the line's total sum.
Enjoying it so far!
on 2. May 2023, 12:50 by Klausku
A really nice puzzle and a brilliant ruleset
on 30. April 2023, 10:32 by OldCaptainWZJ
Took me a while because I'm not that familiar with most lines present here, but the logic used to figure out the lines is actually not complicated at all. Really enjoyable puzzle, thanks for sharing!
on 20. April 2023, 15:54 by Ragna
WOW! A fantastic puzzle! That was much fun. Thank you for sharing :-))
on 20. April 2023, 05:26 by SeveNateNine
Pure fun! And I found the given color scheme very helpful in notating the line options. Thanks!
on 19. April 2023, 21:48 by VitP
Man glaubt das nicht !
Truly an astonishing puzzle. It appears to be completely intractable. The best you can hope to do is evaluate all combinations of line type possibility. That would be 7! combinations. OK, so maybe half of them can be ruled out easily, leaving only about 4^7 possibilities. How is that doable ?
... Except, if you look at the possibilities systematically, there is a hidden quadruple in the set. Anyone who gets that far will be able to get to the end. Not a beginner puzzle.
Take a bow, Marty !
- Thanks for these kind words VitP. Yes, actually it isn't necessary to worry about all the different combinations - each line can be considered individually, which is enough to find the break-in. So that's only 49 things to consider really, and as you say, many of those can be instantly ruled out. But there are a few sneakier ones that take a bit of thinking about to rule out :)
on 19. April 2023, 02:42 by XeonRisq
Creative idea, excellent execution.
I especially enjoyed how the puzzle disambiguates at the end for quite the rewarding solve path.
Fun fact, I also have a puzzle with the exact same name, however, the ruleset is vastly different. It's always interesting to see how different a puzzle can be that was inspired to the same title.
Anyway, keep up the good work, this one was very fun.
- Haha that's amazing - I will give your one a go too :)
on 18. April 2023, 19:30 by BenTen
Superb puzzle! It seemed quite daunting at first but once you start figuring out which line is which they interact beautifully with each other, and it leads to a smooth path that is a joy to solve.
- Cheers for this lovely feedback. I love puzzles that seem daunting, almost impossible at first
on 18. April 2023, 19:29 by spatzle
so much fun!
on 18. April 2023, 17:02 by Knickolas
That was so fun watching the puzzle unveil which line was which! The solve path felt very smooth and was a joy to solve from start to finish. Thanks for the set! :)
- You're most welcome :) I'm really pleased to hear that you found it a smooth path, I did a lot of tinkering to try and get it flowing smoothly from one deduction to the next
on 18. April 2023, 16:30 by mathpesto
Such an elegant, smooth puzzle! Lovely interactions :)
- Thanks so much, yes I was very pleased with how the different lines need to constantly work together in order to move forward
