Topo Map (Topo)
(Published on 9. February 2026, 03:43 by juggler)
TOPO
- Draw lines so that the grid is separated into regions. Lines may not branch or intersect. Some lines are given.
- All cells of a region must be filled with the same digit. Digits in regions that touch differ by exactly one.
- A clue on a line is a value in between the digits it separates (for example, 2.5 would separate 2 and 3).
Solution code: Column 6
Comments
on 12. February 2026, 12:05 by Snookerfan
These puzzles are really fun! Understanding some implications of the rules gives a big rush. Thanks
on 10. February 2026, 10:53 by davidemsa
Interesting genre idea. I was stumped for some time, until I realised what kind of thing I should be doing. But I think that's normal when trying a new genre.
on 10. February 2026, 10:40 by eladv
This was surprisingly tricky! when I first looked at it I was like "oh, this is going to be a nice little exercise in drawing lines". a third of the way through I was like "hmm, this is tricky, maybe I should stop and systematically work out the implications of the rules" (but of course I didn't). Two-thirds of the way through I was like "oh my god this is devilishly hard, I really should have stopped to work out the implications of the rules, it's too late now, I'm almost finished. And now, dang it, I see there's another one posted! Ok, now I'm going to sit and work it through.
(Evil thought: what if there are no systematic implications, and you need to do it ad-hoc all the way through?! I rather not think of that! :) )
on 9. February 2026, 23:41 by Atticus837
I really enjoyed this ruleset! Would love to see more of these puzzles.
