Double Arrows Arrows
(Published on 24. September 2022, 10:09 by Samish)
AnalyticalNinja challenged me to set a puzzle using double arrows. After my last puzzle which setting process had me sweating for several weeks, I wanted to make something easier both in the setting and solving experiences.
Here's what I came up with, it combines double arrows with standard arrows and it's an almost symmetrical problem.
Have fun solving, I'll be happy to read your comments! :-)
Rules :
Normal sudoku rules apply.Digits along each line connecting two circles must sum to the sum of the digits in these circles (example : r7c6+r6c7=r7c8+r8c7+r8c8).
Digits along an arrow must sum to the digit in that arrow's circle.
To avoid any confusion : the lines in box 9 connecting three circles together act as three different lines connecting each pair of circles. See the example below for a valid way to fill a similar case.
Solution code: Column 9.
Comments
on 23. December 2022, 01:12 by Kafkapharnaum
A very good introduction to double arrows for me! Even if, much like it happened with lockout lines, it took a bit of getting used to at the start, but thankfully you made the start really straightforward and ultimately intuitive, which helped with the next, much harder step
Really glad I got to solve this before our big project! ;-)
on 10. October 2022, 04:06 by Samish
added warning note
on 24. September 2022, 22:06 by filuta
starts easy, but then it gets very tough with some unusual logic (very hard to spot for me)
on 24. September 2022, 16:40 by Nordy
Beautiful! With some tricky, but very rewarding moments. Pencil and paper was quite helpful at one point. Highly recommend!
on 24. September 2022, 16:27 by Samish
upgraded difficulty after additional feedbacks
on 24. September 2022, 14:20 by cdwg2000
Very nice!
