Mad Mod Quad Loop
(Published on 16. February 2024, 20:15 by yttrio)
The idea for this puzzle originated from carabet on the CTC Discord, who graciously allowed me to create a puzzle using the rule set.
Rules:
Normal Sudoku rules apply.
Cells separated by a white dot are consecutive. Cells separated by a black dot have a 2:1 ratio. Not all possible dots are necessarily given.
Digits in a circle must appear in at least one of the four surrounding cells.
Draw a one-cell-wide loop of orthogonally connected cells. The loop may not touch itself, not even diagonally.
-- The loop must enter exactly one of the four cells surrounding each given quad clue.
-- The loop acts as a modular line. Each set of three adjacent digits along the loop must be one each from the sets [147], [258], and [369].
Solution code: Row 9
Comments
on 18. July 2024, 22:52 by talldrinkofwater
What an incredible puzzle! Figuring out the loop was so much fun, and had such great interactions with the quads and kropki dots.
One of the most enjoyable puzzles I've ever done! Thanks for setting yttrio!
on 21. April 2024, 19:23 by wuc
Awesome. Cant wait to solve more of your puzzles. Thx.
on 18. February 2024, 20:17 by Dag H
Gorgeous puzzle!
on 18. February 2024, 11:55 by Johannes Quack
Great Puzzle!
on 18. February 2024, 09:44 by madhupt
An extremely fun puzzle. The colouring, first of the loop, then of the parity candidates shows the milti-layered nature of the complexity built into the puzzle. But it is quite approachable as wel. Wonderful share. Thanks a lot.
on 18. February 2024, 02:00 by Chad
very enjoyable puzzle!
on 17. February 2024, 18:58 by NotThatKindOfDoctor
Magnificent!
on 17. February 2024, 11:35 by Schma
Very nice coloring exercise. I enjoyed that a lot, thank you :)
on 17. February 2024, 06:14 by RedBarchetta
Very approachable and very fun. I got to color the grid twice! Thanks!
on 16. February 2024, 22:55 by Jolly Rogers
Very cool idea for a loop puzzle and really well executed, had lots of fun with this one thanks
on 16. February 2024, 21:23 by Briks
So cool. Solved it without entering one single digit. Colours are enough.
on 16. February 2024, 21:21 by gfoot
Nice puzzle, thanks for making it!
