Sudoku Variants Series (390) - Double Arrows
(Published on 26. October 2022, 02:00 by Richard)
Double Arrows
Inspiration for this type comes from Zetamath's Diamond / Valence and tallcat's Split / Doppelt.
Solve online in F-Puzzles or CtC-app (thx Steven R!)
Apply classic sudoku rules.
The sum of the digits on a line is equal to the sum of the two digits in the circles that are connected by that line. Digits may be repeated on line-circle-combinations.
Solution code: Row 1, followed by row 6.
Comments
on 1. November 2022, 12:14 by pin7guin
Lieber Richard, vielen Dank für deine SVS mit nun schon 390 Folgen!
Bitte, bitte, mach noch lange weiter damit.
on 30. October 2022, 09:46 by Angelo
With this one I have completed the whole SVS so far, within a timespan of exactly four months. Thank you very much for the logical roller coaster filled with different variants executed beautifully. It was a joy to see that these variants can be grouped in categories that have a common denominator in how to approach such puzzels. I am impressed you managed to keep this SVS running for almost 9 years already!
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Reply: very well done!
You are one of only very few people who solved all SVS's in a long sequence. And even in a few months!
I agree with your observation that the different variants can be categorized by some generic constraints. Most variants can be placed in such a category.
on 28. October 2022, 20:32 by Krokant
Fun. As the others have said, it has a nice learning curve. Personally, I prefer to find my way into the puzzle first and then solve the problems that arise rather than not being able to start at all or only with huge difficulties. :)
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"Although finding new SVS-potentials becomes like the story with the needle and the haystack and thus very time consuming..."
There is an easy solution to this problem, Richard. Simply invent all new variants yourself. :-))
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Reply: Thanks for the compliment!
So far, I have never thought active about a new variant myself, although of course I invented a few variants as well. In those cases the idea popped up naturally while being busy with something else. So I don't know what would be more time consuming; searching or thinking. :-)
on 28. October 2022, 06:20 by Richard
Thanks for the nice feedback!
Sometimes I am in doubt about continuing with SVS in this overcrowded portal where shelf space is limited; your comments make the coin fall to the right side! :)
Although finding new SVS-potentials becomes like the story with the needle and the haystack and thus very time consuming...
on 28. October 2022, 04:55 by tallcat
A very nice double arrows puzzle. A smooth and easy start with a modest increase in difficulty in the midsolve. A great introduction to the constraint!
on 28. October 2022, 02:00 by mathpesto
This can serve as a great entry point to double arrows, but is also adequately challenging. Had lots of fun solving it! :)
on 27. October 2022, 22:34 by Qodec
So much fun, thank you!
on 27. October 2022, 08:27 by Playmaker6174
A pleasant start, then it got quite harder later on but still all manageable, some beautiful deductions in there :)
on 26. October 2022, 16:28 by CaptRob
Very nice puzzle. The start is easier than the end. Thanks a lot!
on 26. October 2022, 06:00 by Richard
Added links and tag for online solving. Thx Steven R!
on 26. October 2022, 05:03 by henrypijames
Extremely easy start, then gets suddenly hard in the midgame.
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Reply: that was exactly intended! (And confirmed by testers as well. :) )
I thought long about a different opening than the inspiring puzzles. All four relied quite heavily on short lines and the interplay between those lines (and their circles). Therefor I wanted the break in with a long(er) line. And that was only possible with either a very hard opening or an obvious and easy one.
I thought it would be fun to save the harder work for later on in the solve and thus the easy start.
on 26. October 2022, 03:39 by Steven R
F-Puzzles: https://f-puzzles.com/?id=28bb6x3v
CTC: https://tinyurl.com/5n783j5n
