Old Maid
(Published on 5. February 2025, 23:34 by ICHTUES)
Rules:
- Normal Sudoku rules apply.
- Place doubler-cells into the grid so that there is exactly one doubler-cell in each row, column and box. Each doubler-cell must contain a different digit and the value of a doubler-cell is twice the value of the contained digit.
- On both marked diagonals there are no repeated VALUES.
- VALUES along a purple line form a non-repeating consecutive set, in any order.
- Box borders divide each blue line into segments with the same sum (VALUES).
Solve online: Sudokupad Penpa+
Solution code: digits on the positive diagonal (r9c1-r1c9)
Comments
on 18. March 2025, 00:53 by adalg
The most entertaining sudoku I've ever tried. Took long and I often made small but drastic errors and started again but every time it pleased me more and more and this was a very welcome training in careful reasoning.
on 18. February 2025, 07:40 by BloodbuzzCorio
Great puzzle ICHTUES! Absolutely top notch use of boxes filled by lines here. I often find they do produce some great logical steps and this puzzle certainly no exception to that!
on 7. February 2025, 14:56 by Snookerfan
Absolute banger! Beautiful, thank you
on 7. February 2025, 01:45 by Elliott810
Masterpiece!
on 6. February 2025, 15:53 by SirWoezel
Wow.
on 6. February 2025, 13:04 by Myxo
Awesome puzzle! Incredible how all the clues are used together, and the puzzle somehow resolves without additional information.
on 6. February 2025, 07:40 by henrypijames
Definitely has a touch of the miraculous. Feels like there's no middle game - just an endlessly long break-in which fills most of the grid, then some finishing up.
on 6. February 2025, 06:31 by ICHTUES
I fixed the rules
on 6. February 2025, 04:46 by antiknight
Great steps in this one!
on 6. February 2025, 03:26 by sanabas
Tough break-in.
The rule about zipper lines doesn't appear on sudokupad, so I assume a bad c&p here, or it's leftover from an earlier version of the puzzle.
-Exactly
on 6. February 2025, 00:38 by krytolandros
Sorry, I don't see any lavender lines or circles, so I'm not sure what the last rule is referring to. Is that a mistake?
-Yes, I fixed it now
