Thinking Inside the Box
(Published on 16. June 2026, 14:37 by masetab)
This was a fun one to set, hope you enjoy!
Play the sudoku here:
Rules:
Normal sudoku rules apply.
All cages within the SAME 3×3 box sum to the same value. No two boxes share the same cage sums.
A black dot between two cells indicates one digit is double the other.
Any feedback is welcomed! Also, I would love for you to check out some of my other puzzles if you enjoy!
Solution code: Row 8
Comments
on 2. August 2026, 23:25 by Bankey
Tough but great fun. Thanks, @ masetab :).
on 8. July 2026, 04:36 by solimander69
Easy start. Then I stalled out and just had to guess between R9C9 and R1C9. This quickly led to one possibility. Had to continue chiseling after that.
on 18. June 2026, 10:01 by Snookerfan
Very nice! Pretty smooth so 3-3.5 stars for me. Thanks
on 17. June 2026, 14:33 by Krisonium
3.5 difficulty, almost gave up
on 17. June 2026, 11:22 by CorpJigsQuand
Pretty hard but never hopeless. Thank you!
on 16. June 2026, 23:21 by Douglass
Great!!
on 16. June 2026, 18:02 by fuxia
A good challenge, very nice!
on 16. June 2026, 15:57 by pmays123
Wonderful puzzle! Fun deductions and interactions throughout the entire solve. Thanks for sharing!
