Logic Masters Deutschland e.V.

Happy Birthday, Timotab! (by FastSandals)

(Published on 17. October 2025, 22:26 by timotab)

This puzzle was created by my 12-year-old son, who goes by FastSandals, for my birthday. If you solve it, I know he would love to hear what you think!
  • Normal 9x9 sudoku rules apply
  • Digits in cages sum to the number in the top left corner, without repeats
  • Digits in white circles must appear at least once in the four cells surrounding the circle
Play on Sudokupad


As well as setting puzzles, I also solve puzzles on YouTube. Please check it out!

Solution code: Row 5


Solved by forsen, pshubes, OutOfMyMindBRB, Pairot, metacom, Myxo, Ragna, Dermerlin, Testpilot Pirx, micjo, Mozart40, Pegazus, trencaclosques, josemadre, Markos95, pythonssssss, Calvinball, Harold, milxqueen, ... Thomster, RadchenkoAleksandr, Bazylizz, CSStead, drifting, coralizzie1, preethik, Lovejoy , garycblack, ana_shadow, PhoenixAki, Zarlino, diziet, kangaroo, bereolosp, damasosos92, Counterfeitly
Full list

Comments

on 17. December 2025, 13:43 by Zarlino
Very enjoyable: thank you, FastSandals!

on 10. December 2025, 23:31 by Lovejoy
A remarkable puzzle. Kept me working all the way through. Congratulations!!

on 21. October 2025, 06:34 by Palooka
Amazing logical skills for anyone, let alone a 12 year old. You should both be incredibly proud. Thanks for the puzzle and happy birthday!

on 19. October 2025, 13:56 by illicitonion
I loved solving this! Really smooth, beautiful birthday theming, and super impressed at the setting!!

on 19. October 2025, 09:47 by googuee
I enjoyed solving this puzzle. Well done @FastSandals and Happy Birthday @Timotab!

on 19. October 2025, 00:45 by BakBak
Very smooth solve. Happy birthday and thanks for sharing

on 18. October 2025, 23:01 by silent_rob
Lovely to solve, excellent birthday present! Happy Birthday timotab and great job, FastSandals!

on 18. October 2025, 20:33 by Mutiny
excellent job! Definitely a challenge!

on 18. October 2025, 20:01 by GeorgeTheToad2
Happy birthday Timotab. What a great puzzle to celebrate it with, well constructed Fast sandals.

on 18. October 2025, 16:00 by jadezki
A nice and proper crunchy breakfast puzzle, thank you!

on 18. October 2025, 12:19 by Franjo
Very well done, FastSandals! Congratulations to you for setting this lovely present and to your proud father for completing his 54th year.

on 18. October 2025, 12:14 by Blackophelia
Happy birthday, and such a lovely puzzle!

on 18. October 2025, 10:03 by Killer-Ly
Happy birthday timotab and thank you and your son for setting this lovely snack!

on 18. October 2025, 03:32 by thoughtbyte
Excellent puzzle, very fun and approachable!

on 18. October 2025, 02:56 by RussKozerski
Very enjoyable. Thank you.

on 18. October 2025, 02:48 by mihel111
Congrats, FastSandals, I'm sure you made your Dad very proud and happy.

Last changed on 18. October 2025, 01:56

on 18. October 2025, 01:55 by sujoyku
Pure elegance, what a puzzle! Thank you for setting this amazing approachable puzzle, FastSandals! Happy birthday, timotab, and thank you for sharing your gift with us!

on 17. October 2025, 23:54 by Mozart40
Congratulations. Relaxing puzzle. Thx for sharing.

on 17. October 2025, 23:38 by Ragna
Beautiful puzzle!

on 17. October 2025, 23:11 by Myxo
Lovely gift :)

Difficulty:1
Rating:96 %
Solved:269 times
Observed:0 times
ID:000PR3

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Solution code:

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