Japanese Sums #4: Pinpoint
(Published on 5. October 2023, 10:49 by Myxo)
Finally I am continuing this series of Japanese Sums puzzles, this time combining it with Kropki. There are some challenging deductions involved, but nothing should be brutal. Watch out for the negative constraints, though. Enjoy!
Rules:
Shade some cells of the 10x10-grid and fill all unshaded cells with digits from 1-9, such that no digit repeats in any row or column.
Fill all cells outside of the 10x10-grid with positive integers. Those numbers indicate the sums of contiguous segments of unshaded cells in that row or column, in the correct order. There must be at least one shaded cell seperating two segments.
Numbers with a white dot between them have a difference of 1. Numbers with a black dot between them have a ratio of 2:1. If there is no dot between two numbers outside of the 10x10-grid, none of those two characteristics can be true.
Solution code: column 6 and column 7 of the 10x10-grid, S for shaded cells
Comments
on 9. September 2024, 04:40 by Silverstep
easiest and the best one so far. the negative constraint is Very Funny
on 25. November 2023, 10:48 by ibag
... für ...
on 30. October 2023, 22:19 by Piatato
Very fun and not least quite often surprising!
on 19. October 2023, 13:26 by AnnaTh
Erstaunlich, wie geschmeidig sich das Rätsel lösen lässt! Super schön!
on 9. October 2023, 10:07 by MicroStudy
more like onpoint cause your setting was on point haha
on 7. October 2023, 20:02 by marcmees
very nice. thanks
on 6. October 2023, 14:44 by samuel1997
Brilliant puzzle! Smooth and interesting logic!
on 6. October 2023, 14:42 by cmb
Smooth, surprising, entertaining, what more can you ask for!
on 6. October 2023, 11:34 by Snookerfan
Great puzzle with excellent use of the negative constraint. It fooled me a few times at least. Thank you.
on 6. October 2023, 09:42 by Playmaker6174
Wowie, such a delightful solve with plenty of unexpected aha moments, especially towards the end of the solve!
(like, how could it be resolved so nicely at the end like that, I have no idea xD)
on 6. October 2023, 06:25 by Agent
Cool puzzle, the negative constraint did a lot more work than I expected.
on 6. October 2023, 03:09 by wisty
One of my favorite Myxo puzzles for sure! Very fun from start to finish with some very memorable moments and interesting concepts
on 6. October 2023, 00:59 by Christounet
Loved it ! Negative constraints and all the funny steps ;)
Thanks !
on 5. October 2023, 21:28 by Jesper
Very nice, thanks!
on 5. October 2023, 16:54 by KNT
fun and with a very clear solve path, thanks!
on 5. October 2023, 11:55 by zzw
Another amazing puzzle from you Myxo, with simple elegant clues and a smooth but challenging solve path. The negative constraint is used in so many interesting ways here, which is especially impressive given how much the alignment of the outside clues depends on the full shading pattern.
on 5. October 2023, 11:35 by Myxo
clarified kropki rules
on 5. October 2023, 11:32 by Myxo
@Dandelo 1 und 2 ist erlaubt, wie bei Kropki üblich. Ich werde das in den Regeln ergänzen.
on 5. October 2023, 11:14 by Dandelo
Nur um sicher zu gehen: Wenn man den letzten Satz wortwörtlich liest, kann es keine 1 neben einer 2 geben. Ist das wirklich so gemeint?
on 5. October 2023, 10:58 by Niverio
It was a pleasure to test this puzzle in Skunkworks. Lots of fun throughout, one needs to keep an eye out for all the negative constraints :D
