Logic Masters Deutschland e.V.

Los démas (Killer sudoku)

(Published on 5. September 2024, 21:00 by sujoyku)

This killer puzzle should have a difficulty around 3 stars. But there is one deduction that I found so unusual that I almost was tempted to give it 4 stars. This step apparently is not strictly required to get to the solution, but I don’t know if there is another equally beautiful argument. For those interested I describe it in a hidden comment below. I like to thank all testers on the CTC discord. As always, your comments are much appreciated. I wish you joyful solving!

- Normal sudoku rules apply, i.e. each row, column and 3x3 region has to contain the digits from 1 to 9 once each.

- Killer cages: Digits in a cage do not repeat and sum to the clue in the top left.

Here you can solve the puzzle online:

Solve on CtC

Solution code: Column 3 from top to bottom (9 digits in total)


Solved by fuxia, Bjd, Myxo, Calvinball, PinkNickels, Nylimb, SKORP17, brimmy, arteful, Ragna, Wahaj, Dan2388, strangelyinsane, PKMKII, Vodakhan , forsen, by81996672, Paletron, Bellsita, harwiltz, Silverscree, ... Stargazing Albatross, Lenivaya_Joppa, Chefofdeath, EDL, timww572, josemadre, diziet, Uhu, riggidirob, chanelaw, dendrobium, Saskia11, Drewpacabra, widjo, Luke7614, asver, Richard, StephenR, tuoni2
Full list

Comments

Last changed on 18. January 2025, 12:36

on 17. January 2025, 19:43 by StephenR
Thanks, enjoyed this. I didn't spot the trick referred to (wish I had though) but my solve included a similar point to sorryimLate's which saw me through the latter stages.

**
Thank you for your comment, StephenR! I am glad you enjoyed it.
Kind regards, sujoyku

Last changed on 7. November 2024, 09:54

on 7. November 2024, 08:58 by Frank Puzzles
https://youtu.be/3iUP7VTjtg4

Here's my solve of this puzzle. I enjoyed it.

**
Thank you for the feature, Frank Puzzles! I am glad that you enjoyed the solve.
Kind regards, sujoyku

Last changed on 13. October 2024, 21:11

on 13. October 2024, 11:07 by Lenivaya_Joppa
Thank you for this nice puzzle, dear sujoyku! :)

**
You are much welcome, Lenivaya_Joppa, thank you for commenting!
Kind regards, sujoyku

Last changed on 18. September 2024, 16:27

on 18. September 2024, 16:20 by OGRussHood
A lot of complex interactions, but a joy as always.

**
Thank you for your kind words, OGRussHood! I am glad that you enjoyed the puzzle. Regarding difficulty: I believed it to be a 3 stars puzzle. So I agree with you on the "complex interactions" part.
Kind regards, sujoyku

Last changed on 17. September 2024, 19:34

on 17. September 2024, 17:55 by permafrostyx
yay sujoyku i like ur puzzles alot

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Thank you for commenting, permafrostyx! It is great to hear you like my puzzles.
Kind regards, sujoyku

Last changed on 9. September 2024, 23:04

on 9. September 2024, 23:02 by Chipmunk
I loved this puzzle from start to finish!

**
Thank you for your comment, Chipmunk! I am glad you enjoyed the puzzle.
Kind regards, sujoyku

Last changed on 6. September 2024, 09:31

on 6. September 2024, 07:00 by cybers
qué bonito puzle, gracias :)

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¡Con mucho gusto! Gracias por tu comentario, cybers!
Muchos saludos, sujoyku

Last changed on 5. September 2024, 23:00

on 5. September 2024, 22:21 by Calvinball
Muy Lindo! This was a pleasure to solve, I just wish I spoke enough Spanish to leave a full colorful comment en Espanol.

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Gracias, Calvinball! Mi espanol no es mejor. :) If you write me a spanish comment, I might need to look up a lot. But I love a spanish title for my puzzles from time to time. I am glad that you enjoyed the solve.
Kind regards, sujoyku

Last changed on 5. September 2024, 22:57

on 5. September 2024, 22:20 by Nylimb
Nice puzzle! I didn't see the intended deduction, but I didn't need it; I never had to bifurcate.

**
Thank you for your comment, Nylimb! I am glad that you liked it. Also feel free to share your alternative reasoning in a hidden comment if you like.
Kind regards, sujoyku

Difficulty:2
Rating:93 %
Solved:113 times
Observed:4 times
ID:000JOZ

Enter solution

Solution code:

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