Autobahn
(Published on 7. March 2024, 18:13 by olliwright)
The lads from Kraftwerk were certainly ahead of their time! I was looking at the cover of their 1974 album Autobahn, and started spotting that they had modern sudoku constraints hidden in plain sight all over it. This puzzle is my attempt to recreate that cover in sudoku form.
Normal sudoku rules apply. Place the digits 1-9 so that they do not repeat in any row, column, or 3x3 box.
- Quadruples: Digits given in a small circle must appear at least once in the four surrounding cells.
- German Whispers: Adjacent digits on a green line must differ by at least 5.
- Killer cages: Digits in a cage must sum to the total in the top left and cannot repeat.
- Thermometers: Along a thick grey line, digits must increase from bulb to tip.
- Between lines: Digits along a thin grey line must be strictly between the values in the circles at either end.
- Kropki dots: Digits separated by a white dot have a difference of one, while digits separated by a black dot are in a 1:2 ratio. Not all dots are given.
The puzzle is available online via Sudokupad
Solution code: Row 1 from left to right (9 digits)
Comments
on 6. April 2024, 00:25 by olliwright
When the album was remastered in 2009, it was issued with a new cover. The original cover,which was the inspiration for this puzzle, can be viewed here: https://upload.wikimedia.org/wikipedia/en/1/1c/Autobahn-kraftwerk-cover.jpg
on 3. April 2024, 23:25 by Onkel_Dagobert
Nice puzzle, but for the life of me, I can‘t see any resemblence of an Autobahn here, let alone the Kraftwerk album cover. Would you like to share your inspiration?
on 16. March 2024, 20:23 by emilyble21
Thanks for sharing! That was fun.
on 9. March 2024, 19:50 by SnS
another fun one!
on 8. March 2024, 11:47 by Nicholas Roberts
Nice puzzle with a mix of constraints. I did however find I didn't need the between line.
Thanks for sharing the puzzle.
on 8. March 2024, 08:24 by Ganbatte
Fun! This seemed harder than one star. Had to come back to it several times to be able to see the next step. Satisfying puzzle.
on 7. March 2024, 20:23 by PinkNickels
Love these variant combo puzzles! Thanks so much for sharing
on 7. March 2024, 20:03 by Coshise
Enjoyable
on 7. March 2024, 19:19 by Fra314
The fun, fun, fun on this puzzle! Very nice!
