Demonstrating Broken 159
(Published on 17. November 2021, 23:16 by riffclown)
This is a demonstration puzzle to introduce the Broken 159 variant to the community. It is not intended to be difficult but is intended to teach the logic inherent in this new constraint.
Normal Sudoku and some 159 rules apply.
Broken 159- Shaded red cells in column 1 indicates the position of 1 in the same row. The same is true of columns 5 and 9, regarding the digits 5 and 9, respectively. These rules apply ONLY to shaded red cells in those columns. (i.e. negative constraint - unshaded cells cannot index 1,5 or 9 from those respective columns)
Solution code: Row 7 followed by Column 1 left to right, top to bottom, No spaces
Comments
on 5. April 2022, 16:37 by riffclown
Removed Regular 159 Tag
on 20. December 2021, 17:07 by PrimeWeasel
Loads of little deductions. Really enjoyed it, looking forward to more of them!
on 15. December 2021, 22:35 by riffclown
Added Broken 159 Tag
on 18. November 2021, 21:52 by Guillem98
I really like it, I struggled a bit because I forgot about the negative constraint, but when I figure it out it had a wondefoul resolution
--Thank You for the kind words. Very Glad you enjoyed
on 18. November 2021, 08:58 by gbrljt
Cool demo! Looking forward to this ruleset in the future.
Thank You!,, Me too.. It has some very interesting possibilities.
on 18. November 2021, 02:18 by dskaff
I am a fan of normal 159 puzzles but didn't notice the negative constraint at first because i've never seen it before.
I absolutely loved the new logic it introduced.
on 18. November 2021, 01:07 by PleaseIgnore
I'm such an idiot, I didn't read about the negative constraint and kept finding multiple solutions. Nice puzzle! I'm a big fan of 159 and its variants
There are quite a few Broken 159 Puzzles in the works.. That Negative Constraint is indeed powerful and the variant allows some bypassing of the zoning that limits regular 159.
on 18. November 2021, 01:04 by Mad-Tyas
Very nice introduction puzzle!
Thank You
on 18. November 2021, 00:03 by elpadrinoIV
I'm still quite slow with the 159 variant. This one looks interesting and it's super accesible. Thanks for the puzzle!
Thank You for the solve! I'm sincerely glad you enjoyed. More Broken 159 Coming Soon :-)
