Double Negative (Kropki Broken 159)
(Published on 18. December 2021, 19:02 by tallcat)
Continuing to mix and match constraints with broken 159. I was aiming for a minimalist puzzle here, and it turned out nicely while still not being monstrously difficult. Happy solving!!
Normal Sudoku rules apply
Kropki: Cells separated by a black dot have a ratio of 1:2. ALL possible black dots are given.
Broken 159: Digits in red-shaded cells in column 1 indicate the position of 1 in the corresponding row. The same is true in columns 5 and 9 for 5's and 9's respectively. ALL possible red cells in columns 1,5,9 are given
Can be found at f-puzzles or CTC
I was also lucky to have Bremster feature a solve video for this puzzle on his Youtube channel. You can find that here
Normal Sudoku rules apply
Kropki: Cells separated by a black dot have a ratio of 1:2. ALL possible black dots are given.
Broken 159: Digits in red-shaded cells in column 1 indicate the position of 1 in the corresponding row. The same is true in columns 5 and 9 for 5's and 9's respectively. ALL possible red cells in columns 1,5,9 are given
Can be found at f-puzzles or CTC
I was also lucky to have Bremster feature a solve video for this puzzle on his Youtube channel. You can find that here
Solution code: Row 8 (Left to right) followed by Column 7 (top to bottom). 18 digits, no spaces.
Last changed on on 19. December 2021, 13:01
Solved by jalebc, SKORP17, TheRiddler, Julianl, rimodech, Baldo95, butch02, Playmaker6174, Steaky, Godrick, zorant, riffclown, Quacks, twototenth, ymhsbmbesitwf, henrypijames, Askloomok, mlkj, marcmees, ... Bellsita, karlmortenlunna, bolado, Christounet, apwelho, jimblek, Just me, ScienceNerd2240, saskia-daniela, Bobbobert, GhTheOne, isajo4002, ClashCode, sandmoppe, Carolin, mattnburris, MysticMan
Comments
on 20. December 2021, 16:15 by pwfd
Love the broken 159 ruleset so far, this was another great one!
on 19. December 2021, 13:01 by tallcat
Clarification of rules
Last changed on 19. December 2021, 10:32
on 19. December 2021, 09:02 by henrypijames
When you say "ALL possible red cells are given", you mean all possible red cells in columns 159, right? For example, there must be a 2 in C2, which would be self-indexing and therefore red.
Last changed on 18. December 2021, 21:33
on 18. December 2021, 21:33 by Playmaker6174
Very smooth and enjoyable solve! :)
Last changed on 18. December 2021, 20:42
on 18. December 2021, 20:31 by fpac
does the negative constraint apply to only col 159 or all columns?
edit: nvm. i figured it out
Reply: Sorry! Just saw this
