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41. Synergia

So a while ago, I made three personalized puzzles for a few of my IRL friends (one each). One was for someone I knew for more than 12 years and had a few basic constraints. The second was for someone I was friends with for roughly 2 years as I'm writing this, and had a green theme because their profile picture was green.

But the third was my favorite of the three, even though I had known this puzzle's recipient for shorter than the other two friends. This third puzzle included a few basic constraints, as well as a unique one that I might have invented --- tennis balls (added because this person plays tennis).

But as much as I want to post those puzzles here, I can't post any of them (not even the ones I like) because they spelled out the recipients' names with lines.

So here's another puzzle with the tennis balls constraint (and also dedicated to the recipient of the 3rd puzzle I mentioned above) because... why not? 

Also I like the "archaic" nature of this title and maybe I'll make titles like this (ending in a vowel and/or having a much more commonly used form than what's used in the title) for some of my harder puzzles lol

And yeah this probably would've been more fitting for #40 instead of #41 but oh well lol

Enjoy!

Creator's time: 41:47

Rules: Normal 9×9 sudoku rules mostly apply --- but you're using the digits from 0-8 instead of 1-9.

Variant 1: Tennis Balls \ Digits separated by a tennis ball have a product of either 0, 15, 30, or 40. Not all tennis balls are necessarily given.

Variant 2: German Whispers \ Adjacent digits along a green German Whispers line differ by at least 5.

Variant 3: Kropki \ Digits separated by a white dot must be consecutive, and digits separated by a black dot must have a 1:2 ratio.


Difficulty: 10.0/14

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