Autoglyphs 3 (Region Sum)
(Published on 27. July 2025, 07:00 by juddimal)
A new series with digits made from lines, now introducing another limit on what digits can appear on a glyph. Autoglyphs roll out!
Normal sudoku rules apply.
REGION SUM: Box borders separate blue lines into segments with the same sum.
ODD/EVEN: A digit in a grey circle is odd. A digit in grey square is even. In this puzzle, each circle and square has a unique value.
AUTOGLYPH: Lines create shapes in the form of a digit. That digit must appear exactly once on the line.
NO NEIGHBORS. If an autoglyph represents the digit X, then X+1 and X-1 may not appear on the same line.
https://sudokupad.app/l3xwms6g43
Here is a ""look-and-say" cage example of how the new rule works. The line straddling boxes 1 and 2 should be interpreted as a 4, so must contain exactly one digit 4 and cannot contain the digits 3 or 5.
Solution code: Column 1 (9 digits)
Comments
on 30. July 2025, 16:47 by VitP
i was about to proclaim that this MUST be level 3 - but it's not.
if you want a hint, here's the solve path. in some sense, this is "obvious", because of the negative constraint.
the first thing to do is get a piece of paper, write on it in block letters THIS IS SUDOKU, and nail it to your wall.
anyway, it turns out that 2 is forced, then box 4, then 5, then box 3, then 3, and after that you should have enough to bite on.
as for the setting, i shudder to think of the EFFORT involved in placing all the glyphs JUST SO.
on 28. July 2025, 15:00 by Klook
I tried to solve it. I didn’t succeed. I decided to look at the previous Autoglyphs — maybe that would help. I got through the first two relatively easily. But this one… four hours of pencil-marking. I must have been doing something wrong. But still, it’s really awesome. Thanks!
on 28. July 2025, 12:46 by Mujika
Amazing ! LOved it :)
on 28. July 2025, 12:33 by Franjo
Amazing puzzle. I found three solutions - ouch! - I overlooked that set-rule! Thank you very much for creating and sharing this lovely gem.
on 27. July 2025, 23:13 by Freegerator
Loved this one.
Theres an old math joke: Two mathematicians are discussing a result. One insists the result is obvious and the second isn't sure. After an hour of explanation, the second says "ah I see, it IS obvious"
This is how I felt solving this one. Is it really three stars? Why am I not seeing the path? Then, after a while, oh, I see. It IS three stars
on 27. July 2025, 20:52 by nunc
Really nice and smooth puzzle. I love the new ways of thinking.
on 27. July 2025, 18:24 by Exigus
The no neighbours rule becomes really powerful. A fun solve, thanks!
on 27. July 2025, 12:10 by PuzzlePatzer
Very nice - the autoglyphs are quite fun to decipher!
on 27. July 2025, 08:35 by RedBarchetta
Excellent! I love the glyphs. This one felt even more straight forward than the last one - though maybe I am just learning. The deductions were great - quite linear. Thanks for the puzzle! Very Nice!
