Wednesday, 22 October 2025

Walker

Here’s a Miti! It has a relatively simple ruleset, but has a negative constraint, which means the negative constraint alarm is going to go off any minute. I get a bit nervous when I know an alarm is planning to go off soon, but luckily I have time to prepare. I’ve headed outside GAPP HQ to a nearby quiet park, and am listening to music on my headphones, so I should be safe and avoid the alarm entirely! 🎧 🏞️

Back at HQ… 🚨 negative constraint alert 🚨

Rules: Draw segments on the dotted lines to create a loop one cell wide which passes through all squares. Black circles indicate all vertices, including those on the edge, where exactly three lines meet at a point. There may be no vertices where four lines meet.

⚠️ Negative Constraint Alert: If there is not a dot at a point, there can be at most two lines meeting there! (This includes along the edge, where all points already have at least two lines!) ⚠️

Interface Note: It's easy to forget to draw a border in this genre - if answer check isn't going off, scan the grid to see if you're missing one.

Example (Penpa): https://tinyurl.com/y2xdwusj

Solve in 2:15 or under for a Speedy Sloth! 🦥
Complete in 4:30 or under for a Quick Crab! 🦀
And all solvers who complete the puzzle will earn a Nervous Niau Kingfisher! 🐦

Puzzle (Penpa): https://tinyurl.com/34h5h57k