Primal Instinct (Killer Sudoku)
(Published on 25. July 2023, 09:00 by Agent)
This puzzle was a setting challenge for me, I wasn't sure the ruleset would be possible without any additional constraints. But I learned a thing or two about primes in the process. I hope you'll enjoy, this one could be a bit tricky but the ruleset is straightforward.
Rules
- Normal sudoku rules apply.
- Digits in cages cannot repeat and must sum to a prime number.
Puzzle links
Solution code: Row 2 (from left to right) then column 1 (from top to bottom)
Comments
on 26. September 2024, 17:52 by StephenR
I felt in the prime of life solving this and it was surprisingly smooth for me.
on 8. November 2023, 03:06 by Krokant
I must have done something wrong, because everything went smoothly for me. That's usually not the case. ;)
This is indeed a prime time puzzle. Just wonderful!
on 17. August 2023, 04:50 by Agent
Thanks everyone for the positive comments! I'm glad you had a prime experience solving the puzzle! (Pun intended.)
on 16. August 2023, 19:37 by Christounet
Beautifully done ! Not that hard after all, considering at first you'll have to juggle with a lot of arithmetic. Some very clever configurations in here, and I learned quite a few things about prime numbers as well. Thanks :)
on 1. August 2023, 00:19 by Ali M
Excellent idea and execution. Well done!
on 30. July 2023, 11:33 by AdarshN
This is simply one of the best puzzles I've completed. I hit a major wall during the solve and genuinely got stuck for several days (not the puzzle's fault, I was just missing a couple of observations like a dummy) but I refused to quit simply because I was so delighted by this puzzle that I was determined to see it through. Absolutely loved it.
on 29. July 2023, 19:30 by Klausku
Brilliant puzzle. Didn‘t expect that richness of logic out of the simple ruleset.
on 29. July 2023, 16:08 by MatthewDonovan
Really nice puzzle!
on 28. July 2023, 19:19 by sujoyku
Thank you for this awesome puzzle, Agent! I had to take several attempts before I was able to solve it, but that was so worth it. It feels kind of magic that a puzzle with this elegant rule set is even possible. Stunning setting!
on 28. July 2023, 16:17 by dennischen
I was primed to do some tricky arithmetic but it turned out not to be too necessary :) Clever puzzle!
on 28. July 2023, 12:33 by peacherwu2
Very clever! A true masterpiece.
on 27. July 2023, 17:08 by DaniK
Amazing puzzle! Had a lot of fun :)
on 27. July 2023, 16:24 by madhupt
Superb puzzle! Great fun solving it! Thanks a lot for sharing.
on 26. July 2023, 13:59 by R3dD3vil2k6
beautiful puzzle
on 26. July 2023, 03:10 by shteev
Nice puzzle. Less maths than I feared there might be ^_^
on 25. July 2023, 23:50 by Silverscree
That was a very clever puzzle with an unexpected solve path to me :)
on 25. July 2023, 23:16 by Blashyrkh
Absolutely fantastic! The prime constraint adds so much interesting logic.
on 25. July 2023, 18:09 by Lorenz
I couldn't solve it ;_;
on 25. July 2023, 15:47 by Bankey
Fantastic puzzle. Thanks, @ Agent :).
on 25. July 2023, 14:19 by SirThomas
Very nice puzzle
on 25. July 2023, 13:14 by ONeill
Very smooth :)
on 25. July 2023, 12:04 by Myxo
Awesome puzzle, really intricate logic!
on 25. July 2023, 11:11 by by81996672
fun puzzle,thank you
on 25. July 2023, 11:06 by Snookerfan
Brilliant! Thank you
on 25. July 2023, 10:21 by Piatato
Stellar construction! I had a lot of fun solving this. :)
