180° /5
(Published on 29. January 2024, 11:49 by RockyRoer)
The Rules:
- Normal sudoku rules apply. Fill every row, column, and 3x3 box with digits from 1-9.
- [Rotational Pairs]Cells rotated 180° from each other must sum to either 5, 10, or 15.
- [X, V, Kropki]: Normal xv and kropki rules apply - not all x's, v's, or dots have been given.
- Cells separated by x sum to 10
- Cells separated by v sum to 5
- Cells separated by a black dot are 2:1 ratio
- Cells separated by a white dot have a difference of 1
The Puzzle:
Try it on CTC with answer check
Solution code: Row 4
Comments
on 30. January 2024, 15:20 by SenatorGronk
Really liked this one, but gotta say I found it much tougher than 3 stars even though I've made a puzzle that relies on the same conceit about pairs of digits summing to a multiple of 5: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000DFG
Reply: Sorry for underestimating difficulty -- it's always so hard to do. I intended people to shade this with two different colors -- one for 1469 and one for 2378, and even though you don't know which colors which, you can shade almost everything before it reveals itself a bit. I didn't know that strategy when I saw your puzzle a while ago, so now that I know it, I should go back and take a second look!
Thanks for the solve!
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with mine I think 4 colors would be better because of the negative constraint. I think I made life more difficult w yours because I was coloring both low/high within a set as well as complementary pairs.
