Lockdown
(Published on 29. September 2025, 13:12 by Prof.Dori)
Lockdown
Rules:
Normal sudoku rules apply. Box borders divide the blue line into segments with the same sum. Each gray line is a palindrome i.e. reads the same in both directions. Adjacent digits along the green line must differ by at least 5.
Solution code: Row 2.
Comments
on 5. December 2025, 04:44 by Ramez
It took me 5 hours to solve it. This was a humbling experience, but it was totally worth it. The idea and the execution were sublime. Thank you for setting and sharing this amazing puzzle!
on 4. December 2025, 22:59 by SudokuHero
Very satisfying puzzle.
on 22. October 2025, 16:23 by Fool on Hill
A tough beauty - glad I stayed with it to understand it - perhaps took longer than it should have done to get the logic - but well worth finding it.
on 8. October 2025, 02:43 by AdarshN
This was monstrously hard for me and I probably shouldn't even have attempted it at my skill level, but it was such a beautiful and excellent puzzle that I simply had to. After a couple of *days* of beating my head against the wall, I finally did solve it (I fear there was probably an easier way than the way I did it, but I guess what matters is that I got there in the end), and it really was just as absolutely brilliant as every Dorlir puzzle is. 5*/5 for difficulty, 10*/5 for quality.
on 4. October 2025, 15:21 by psninn
nice break-in
on 2. October 2025, 23:20 by Djirt
Спасибо, великолепная геометрия и взаимодействия линий!) очень понравилось!)
on 2. October 2025, 02:12 by ViKingPrime
A beautiful puzzle though for me it felt significantly less approachable than 5-stars. A real brain buster, this one.
on 30. September 2025, 10:26 by Snookerfan
Great puzzle! Some key deductions are well hidden, which made this puzzle hard and interesting. Thank you
on 29. September 2025, 15:48 by Exigus
Very cool. Found some interesting relations early but couldn't narrow anything down for a long while, then I found the likely intended break-in and it went fairly smooth after that but still a few more semi-tricky deductions to make. Thanks!
on 29. September 2025, 13:52 by Nebuzaradan
Interesting puzzle with some unusual reasoning that took a while to get used to, but was extremely satisfying once it clicked.
on 29. September 2025, 13:17 by lmdemasi
A beautiful puzzle. Felt significantly more approachable than 5* to me.
