Tumbling Dominoes (Killer sudoku)
(Published on 16. March 2026, 16:56 by sujoyku)
Rules:
- 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 must sum to the clue in the top left.
Here you can solve the puzzle online:
Solution code: Row 7 from left to right (9 digits in total)
Comments
on 14. April 2026, 10:03 by Lenivaya_Joppa
Thank you for this nice puzzle, dear sujoyku! :)
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You are much welcome, Lenivaya_Joppa, thank you for your comment! I am glad that you enjoyed the puzzle.
Kind regards, sujoyku
on 31. March 2026, 03:33 by FullHouse07
Nice and easy puzzle. Thanks
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You are much welcome, FullHouse07, thank you for your comment! I am glad that you liked the puzzle.
Kind regards, sujoyku
on 23. March 2026, 22:09 by NotSoMagnifique
Two stars for me, but worth the effort!
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Thank you for your comment, NotSoMagnifique! I am glad that you enjoyed the puzzle.
Kind regards, sujoyku
on 23. March 2026, 17:26 by ademjaz
Very fun puzzle!
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Thank you for your comment, ademjaz! I am glad you had a fun solve.
Kind regards, sujoyku
on 20. March 2026, 17:20 by Decapod
Interesting how it maintains a steady, very reasonable difficulty throughout - it never hits a point where it "falls apart" to become mindlessly easy.
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Thank you for your comment, Decapod! I am glad that you liked the puzzle and enjoyed its level of difficulty.
Kind regards, sujoyku
on 19. March 2026, 14:30 by aqjhs
Flinty brought me here
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Great that you came here, aqjhs. Thank you for your comment!
Kind regards, sujoyku
on 17. March 2026, 18:10 by xiaoji
Nice puzzle with a clear solving path! It's 2 star for me, since I'm not familiar with the techniques in killer sudoku.
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Thank you for your comment, xiaoji! I am glad that you liked the puzzle. Also thanks for sharing your take on the difficulty.
Kind regards, sujoyku
on 17. March 2026, 13:42 by Killer-Ly
Lovely super easy and super smooth puzzle. Thank you so much, Sujoyku!
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You are much welcome, Killer-Ly , thank you for your comment! I am glad that you enjoyed a smooth solve.
Kind regards, sujoyku
on 17. March 2026, 04:38 by Karitsu
They tumble just like real dominos do! Very approachable and one of my fastest solves for this level of puzzle. Thanks for setting!
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You are much welcome, Karitsu, thank you for commenting! I am glad that you liked the puzzle.
Kind regards, sujoyku
on 17. March 2026, 00:23 by Ragna
Super smooth FUN puzzle! Thank you. :-)
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You are much welcome, Ragna, thank you for your comment! I am glad you had a fun solve.
Kind regards, sujoyku
on 16. March 2026, 21:50 by baku
That was a sweet little treat! Thanks for sharing
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You are much welcome, baku, thank you for your comment! I am glad that you had a fun solve.
Kind regards, sujoyku
on 16. March 2026, 20:41 by GeorgeTheToad2
Nice and approachable.
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Thank you, GeorgeTheToad2! I am glad that you liked the puzzle and found it to be approachable.
Kind regards, sujoyku
on 16. March 2026, 19:35 by tallcat
A very nice introductory level killer puzzle
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Thank you for your comment, tallcat! Great to hear that you liked it.
Kind regards, sujoyku
on 16. March 2026, 19:07 by superkinkel
Liked ist very much, but found it quite easy, under 20 Minutes and most two star puzzles take me rather like an hour. But I may be biased since Killer Sudoku is probably my strength since it was my way into variant Sudoku.
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Thank you for commenting, superkinkel! I am glad that you enjoyed the puzzle. Considering difficulty: I had this between 1 and 2 stars and whenever I am in doubt, I try to err on the harder side. If more people find it as approachable as you did and the difficulty ends up at 1 star, I won't be unhappy at all.
Kind regards, sujoyku
on 16. March 2026, 18:55 by fractalminding
Hello, sujoyku. Really cool sudoyku! ❤️
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Hello fractalminding, thank you for your comment! It made me smile. I am glad that you liked the puzzle.
Kind regards, sujoyku
