Frankenstein
(Published on 10. June 2025, 20:50 by zetamath)
Normal sudoku rules apply.
The lavender lines are zipper lines. Each pair of digits equidistant from the center digit has sum equal to the center digit. For instance, 16827 would be a valid fill for a zipper line because 8 = 1 + 7 = 6 + 2.
The darker off green kind of unpleasant looking lines are modular lines. Each set of three adjacent digits along a modular line must contain one of 147, one of 258, and one of 369.
Have fun, leave a comment if you enjoy the puzzle!
PS: I stream solving sudoku like puzzles two days a week, as well as posting Let's Plays of puzzle games like Blue Prince. You can check out the channel, as well as some videos I have made about setting puzzles, at my YouTube channel here.
Solution code: Row 9
Comments
on 14. June 2025, 22:26 by etoler
A REALLY difficult break in combined with some failed Sudoku on my part made this one a solid 4 stars for me. I loved all the unexpected interactions, though. Fantastic puzzle!
on 12. June 2025, 23:16 by damo_89
5 star break in. I spent an hour fumbling around in sort of the right place but I had to have it explained to me, and even then it took 3 goes to actually convince myself it was correct. Rest of the puzzle is relatively benign but still lovely interactions. Modular and zippers play so well together.
on 12. June 2025, 22:13 by toshii
I spent way too long in the wrong location for the break in. Had to take a small hint in the end. A good high 4* for me
on 12. June 2025, 04:21 by RedBarchetta
When I started this puzzle, it was rated 5 stars. By the time I finished, it is now rated 4 stars, which felt right because it only took me 2 hours and not 5. :)
After fussing with and learning about the interactions for 45 minutes, I got it down to 2 possible states. So I tried one state, and it broke in 10 minutes. But I saw why it broke, and therefore understood why the other state is the only solution. Then the interactions were fantastic, doubles, triples, sets, things started showing up! All the way until the end, satisfying. Thanks!
on 12. June 2025, 00:36 by Exigus
Amazing to get those interactions, hard but very satisfying. Thanks!
on 11. June 2025, 10:09 by Martina
Green is my favourite colour, I see nothing unpleasant here.
Nice puzzle, thank you!
on 10. June 2025, 21:52 by giladooshlon
The intersections between the lavender and darker off green kind of unpleasant looking lines were pretty nice! Felt like lower end 4* to me.
