Sudoku Variants Series (270) - Sudoku One Touch
(Published on 27. May 2020, 00:00 by Richard)
One Touch
Inspiration for this type comes from Sudoku GP 2020 Czech Republic round.
Solve online in F-Puzzles or in CtC-App (thanks Nick Smirnov!)
Apply classic sudoku rules.
Each digit 1-9 has exactly one touching pair in the grid. All these touches are marked with a circle. A circle can indicate one or two touches.
Solution code: Row 4, followed by row 8.
Comments
on 4. November 2021, 05:17 by Richard
Added links for online solving.
on 4. November 2021, 01:28 by Nick Smirnov
f-puzzles:
https://f-puzzles.com/?id=yfb29sbu
CTC App:
https://tinyurl.com/jduk88a7
on 25. August 2020, 07:25 by Richard
@Hase: I have still no idea about this number, but in the meanwhile it can be maximal 25.
on 31. May 2020, 08:11 by Statistica
Wir hatten Mal eine schöne ausführliche Statistik von Senior zu diesem Thema dazu. Aber die ist schon fast fünf Jahre alt. http://forum.logic-masters.de/showthread.php?tid=1361
on 31. May 2020, 08:02 by Mody
I definitely belong to those solvers who solved 100 percent, because every puzzle of Richard is worth solving- high quality, understandable rules, nice solving paths.
Richard, thanks a lot for continuing despite the flood of new authors :)
on 31. May 2020, 06:56 by Richard
@HaSe: I have no idea about this number, but my guess would be around 40.
on 30. May 2020, 22:30 by HaSe
How man puzzlers have solved 100 % of you series? Do you now this number of Richards greatest fans?
on 30. May 2020, 06:10 by Richard
@Circleconstant: Well done! In 6 months you raced through the entire series! From now on you need to be patient, but there will be many more types included in the series in a steady weekly pace. In the last months alone my list of possible variants has grown very fast, and some variants seem a challenge (to write one myself! ;-))
Meanwhile there have been many nice and interesting puzzles and sudokus posted here, so you don't have to fear boredom.
on 29. May 2020, 17:18 by Rollo
Congratulation! Free time? Try this one: 2KU ;-)
on 29. May 2020, 16:23 by Circleconstant314
And with that, I'm FINALLY caught up with this series! Now I don't know what to do with the time I've suddenly got freed up for me.
on 27. May 2020, 21:24 by HaSe
Mal wieder große Klasse
on 27. May 2020, 06:39 by Richard
@Carrick22: Just to be sure: in case of this type it's possible to have a circle where two digits touch so you have only two different digits. (And in case of this specific puzzle there are only eight circles, so there must be one circle having a double pair.)
on 27. May 2020, 00:22 by Carrick22
I made puzzles with a similar rule called "Sprouts", where all 2×2 squares containing only 3 different numbers were marked. Interesting to the the same concept in other's puzzles !
