dot dot dot...
(Published on 18. December 2025, 13:26 by Stabil)
dot... dot... dot...
Rules:
Normal Sudoku rules apply.
Renban: A renban line contains a set of consecutive digits in any order.
Some dominoes are separated by dots of three different colors. Black: One digit is double the other. Gray: Digits are of the same value. White: Consecutive digits.
Draw an orthogonally connected loop through the centers of some cells, so that the loop passes through every box at least once. The loop must not touch itself, not even at a point. The loop exclusively turns on even digits. Digits on the loop are double their value in regards to renban lines and dots. Digits separated by a dot cannot both be on the loop.
Puzzle:
Solution code: Enter digits from row 1 and 2 without spaces
Comments
on 22. December 2025, 19:00 by Stabil
Thank you very much for the feedback :D. This is my first puzzle, and i've made some changes to fix the problems.
on 19. December 2025, 07:43 by prismic911
Same comments. two solutions and the solution code is wrong.
on 18. December 2025, 20:37 by dzamie
That was pretty fun! Had a pretty clear place to start, but I had to really think hard to eliminate numbers or continue finding the loop.
Just 3 bits of criticism:
1. The solution code is wrong. I got the "yey, congrats" message, but the 18 digits from rows 2 and 4 don't work for the solution code here.
2. I'm not sure if this is intended, but the loop rule as written only forbids the loop from reentering the same cell twice; there's nothing stopping it from, say, squiggling back and forth through every cell of box 7.
3. There are two possible solutions, found by swapping the 1s and 2s in boxes 6, 8, and 9.
