Inverted Killer
(Published on 17. October 2024, 19:01 by NurglesGift)
Normal sudoku rules apply.
Cages sum to the total given in the cage corner.
The highest digit in each cage is inverted. (i.e. 9 counts as -9, 8 as -8 etc).
Digits can not repeat within a cage.
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Feel free to recommend this puzzle to anyone.
Feel free to take special rules for your own puzzle.
Feel free to give feedback.
Bless you!
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Solution code: give the digits of row 2 (left to right)
Comments
on 24. November 2024, 10:36 by NurglesGift
Thank you. I'm really happy with how this puzzle turned out. Impossible if you don't find the trick and still hard after you find it :)
on 24. November 2024, 00:16 by LeaVulpina
This took three attempts, but I'm so glad I stuck it out, because this was an exceptional puzzle!
First attempt, I got nowhere with naive case-checking. Second attempt, I noticed the parity property of the cages; but I messed up, so took a break.
During my third attempt, I remembered that I'd tret a -1 cage as a 0 cage in my second attempt; and yet, somehow I STILL managed to mess it up again by treating a 0 cage as a -1 cage. xD
Thankfully, checking all the cages uncovered my mistake, and I was able to bring my comedy of errors to an end without needing a fourth attempt.
Thank you for the wonderful puzzle!
on 24. October 2024, 17:52 by LordBidoof
I thought of this puzzle as almost unapproachable initially, then I read the comments, and someone said the word parity, this was a really beautiful puzzle when I realized that!
on 24. October 2024, 13:28 by zrbakhtiar
parity produced after adding and subtracting numbers is key to this puzzle
on 20. October 2024, 14:15 by RockyRoer
That was a nice steady challenge. Once I started asking the right questions (about parity) it flowed smoothly! Thanks for setting a puzzle with lots of arithmetic.
on 20. October 2024, 11:16 by NurglesGift
idk, maybe people don't like this puzzle or maybe they find the break in very hard. I could give a hint that make the puzzle a lot easier.
on 18. October 2024, 18:36 by Snookerfan
Very nice! Hard to get a break-in, but after getting some digits, it became smooth. Thank you
