String Quartet
(Eingestellt am 5. November 2023, 01:26 Uhr von IcyFruit)
Normal sudoku rules apply. Divide the grid into 4 orthagonally connected sections such that each section shares an edge with every other section and no 2x2 area is occupied by only one section.
Cells on the same line belong to the same section. Each section has a different constraint which all of its lines must obey. The constraints for each section are:
1. RENBAN: Digits on a line do not repeat and form a consecutive set, in any order.
2. PALINDROME: The digits along a line are the same when read from each end.
3. GERMAN WHISPER: Digits which are adjacent on a line must have a difference of at least 5.
4. REGION SUM: Each segment of a line within a 3x3 box must have the same sum. The sum may be different for different lines.
Lösungscode: Columns 5 and 8, top to bottom
Kommentare
am 17. Februar 2024, 14:06 Uhr von Vebby
Wonderful puzzle! Beautiful, clean logic.
am 9. Dezember 2023, 18:38 Uhr von ryanprobably
Very nice and quite challenging. Even after all the difficulty to color, the ensuing sudoku presents a solid challenge in itself.
am 26. November 2023, 05:29 Uhr von Nightmare2805
That was brilliant. I loved it.
am 25. November 2023, 16:38 Uhr von Mr.Menace
Fantastic! Please keep setting these marvelous puzzles for us to enjoy and be inspired by!
am 25. November 2023, 10:48 Uhr von Onkel_Dagobert
The rules were somewhat unclear to me. A region sum line in one single box usually makes no sense, which is why I did not even consider such a thing. It was only after giving up initially and reading the comments that I learned that this was allowed. After that, the puzzle was still very hard for me, but also very enjoyable. What a brilliant mind it takes to set something like this up.
am 25. November 2023, 03:08 Uhr von heliosfant
Unfortunately it was not clear from the ruleset that a region sum line in a single box is allowed. Maybe it also just because I am bad at English. Apart from that It was a stellar experience. Thank you for the puzzle.
am 21. November 2023, 18:58 Uhr von Al Fresco
Wow. I think you've raised the bar with colouring puzzles here. What an incredible sudoku :)
am 21. November 2023, 01:12 Uhr von Agent
Excellent puzzle! I greatly enjoyed both parts.
am 19. November 2023, 20:14 Uhr von madhupt
Another brilliant puzzle from @IcyFruit. It flowed really smooth but was really hard for me. Thanks for sharing!
am 16. November 2023, 23:44 Uhr von Fool on Hill
Another ridiculously good puzzle - I took a recommendation from Myxo, and am glad - add me to the fan club.
am 10. November 2023, 23:14 Uhr von Playmaker6174
You're an insane person for making a 4 colors yin-yang puzzle, but you're also a real genius for making a 4 colors yin-yang puzzle with a flow this good, from the sections connectivity to the sudoku resolution.
Take a bow please, I'll remember this one for a long while.
am 10. November 2023, 23:07 Uhr von Myxo
Another masterpiece! Just brilliant. I look forward to solving more of your creations in the future :)
am 8. November 2023, 08:35 Uhr von jinkela114514
@aspirin_waffle , not necessarily
am 5. November 2023, 10:22 Uhr von IcyFruit
Fixed solution code description
am 5. November 2023, 09:57 Uhr von SeveNateNine
It's column 5 and 8 I think
am 5. November 2023, 09:53 Uhr von sanabas
Seems to be a typo in the solution code, or its description.
edit - thanks, columns 5 & 8 worked.
am 5. November 2023, 09:11 Uhr von SeveNateNine
Excellent puzzle that challenges your intuition. Thanks!
am 5. November 2023, 03:09 Uhr von aspirin_waffle
does a region sum line need to enter more than one box?
