Three little burgers (Anti-king/anti-knight killer sudoku)
(Published on 24. June 2024, 23:36 by sujoyku)
- Normal sudoku rules apply, i.e. each row, column and 3x3 region has to contain the digits from 1 to 9 once each.
- Anti-king/anti-knight: Digits a king's or a knight's move (in chess) apart may not contain identical digits.
- Killer cages: Digits in a cage sum to the clue in the top left.
Here you can solve the puzzle online:
Solution code: Column 1 from top to bottom (9 digits in total)
Comments
on 10. September 2024, 20:11 by sujoyku
changed CTC link to include solution code (big thanks to garycblack for providing that link!), no changes to the contents of the puzzle
on 10. September 2024, 17:26 by garycblack
SudokuPad solution link:
https://sudokupad.app/16w9i47u12
That was really interesting.
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Thank you for your comment, garycblack! I am glad that you found this interesting. Also thank you for providing the link with solution check. I will embed it into the puzzle page above.
Kind regards, sujoyku
on 2. July 2024, 16:34 by 9Rookienumbers
Took me 20 mins to figure out that break-in! Neat puzzle
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Thank you for your comment, 9Rookienumbers! The break-in is the hardest part I guess. I am glad that you liked the puzzle.
Kind regards, sujoyku
on 1. July 2024, 01:35 by Zarlino
Very elegant: thank you!
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Thank you for the comment, Zarlino! I am glad you liked the puzzle.
Kind regards, sujoyku
on 30. June 2024, 05:58 by Lovejoy
Another of your puzzles where I wished there was a "very very nice" option
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Thank you for your kind words, Lovejoy! It is great to hear that you enjoyed the puzzle.
Kind regards, sujoyku
on 27. June 2024, 07:16 by kago
really clever break in, loved the logic behind that. quite approachable puzzle, as a total beginner it took me some time to figure it out but from there it flowed nicely. well set
**
Thank you for your comment, kago! I am glad that you liked the break-in idea and found the puzzle to be approachable.
Kind regards, sujoyku
on 26. June 2024, 16:07 by meggen033
The puzzle gets quite a bit more approachable when you realize there is an anti-king's move restriction...great puzzle! Super fun!
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Thank you for your comment, meggen033! You are absolutely right: The anti-king constraint is crucial. I am glad you had a fun solve.
Kind regards, sujoyku
on 26. June 2024, 14:53 by Lenivaya_Joppa
Thank you for this nice puzzle, dear sujoyku! :)
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You are much welcome, Lenivaya_Joppa! I am glad you enjoyed the puzzle.
Kind regards, sujoyku
on 26. June 2024, 11:32 by Fra314
Brilliant setting. Tasty set of burgers, each one with that extra ingredient (or the lack of it...?) that made them special!
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Thank you for your comment, Fra314! I have to admit I did not really get the joke/reference about the extra ingredient. :)
Anyhow, I am glad you liked the puzzle.
Kind regards, sujoyku
on 25. June 2024, 16:57 by Karitsu
Agreed with others saying the break in took way longer than it should have. Once I wrapped my head around it, it was brilliant. And the rest of the puzzle resolved easily from there. Sort of like a 2 star break in and a 1/2 star flow. Very nice!
**
Thank you for the comment, Karitsu! I am glad that you liked the puzzle.
Kind regards, sujoyku
on 25. June 2024, 16:46 by DarrenBurnett
A beautiful bit of logic needed to break in, which eluded me for quite a while. Once spotted the whole puzzle flowed very smoothly.
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Thank you for commenting, DarrenBurnett! The break-in is definitely the hardest bit of the puzzle. Glad to hear you had a smooth solve thereafter.
Kind regards, sujoyku
on 25. June 2024, 15:19 by Prince Myshkin
Loved it, sujoyku! Another elegant puzzle with a wonderful break-in that left me feeling stupid after it took me a few minutes to work out. Thanks!
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You are welcome, Prince Myshkin, thank you for your comment! I am glad that you liked the break-in and found the puzzle to be elegant.
Kind regards, sujoyku
on 25. June 2024, 14:22 by GeorgeTheToad2
Very nice easy flow. Thank you.
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You are welcome, GeorgeTheToad2, thank you for commenting!
on 25. June 2024, 14:16 by VitP
nice trick with the cage geometry, where ALL THREE constraints must be used together to get started.
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Exactly, VitP, that is why I liked the set-up so much. Thank you for commenting!
on 25. June 2024, 13:44 by OGRussHood
Daily joy from sujoyku!
**
Thank you for the kind words, OGRussHood!
on 25. June 2024, 12:18 by Christovaneeden
Took me way longer than it should have. Interesting break in. Easy flow from there. Would rather put it at 1.5-2/5 difficulty.
Great puzzle none the less
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Thank you for the comment and sharing your opinion on the difficulty rating, Christovaneeden! I am glad you had a nicely flowing solve.
Kind regards, sujoyku
on 25. June 2024, 08:29 by sanabas
Fun break-in idea, and extremely approachable.
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Thank you for the kind feedback, sanabas! I am glad that you liked the break-in idea and found the puzzle to be approachable.
Kind regards, sujoyku
on 24. June 2024, 23:56 by Shape
Lovely little puzzle :) When I started solving, I particularly enjoyed the combination of knights move + kings move constraints. So this was a bit of nostalgia on top - thank you :)
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Thank you for your kind comment, Shape! I am glad that you liked the puzzle. Funny that you mention nostalgia since I don't have too much experience in anti-king/anti-knight setting. I saw these constraints being used in this year's DSM competition (German sudoku championship). As I would like to contribute some puzzles to next year's edition, I have started to look a bit more into setting these variants.
Kind regards, sujoyku
on 24. June 2024, 23:51 by LeaVulpina
Couldn't agree more; that break-in and this puzzle as a whole — *chef's kiss*
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Thank you for your kind words, LeaVulpina! I am glad that you enjoyed the puzzle and its break-in.
Kind regards, sujoyku
