serenepipe

Link to the GitHub issue for the iOS port, there's basically no additional info or context provided by the posted link.

https://github.com/streetcomplete/StreetComplete/issues/5421

Really fun! Reminds me a lot of Nikoli puzzles[0], which I have spent many, many hours playing.

[0]: https://en.wikipedia.org/wiki/Nikoli_(publisher)

The site is missing attribution, then, which is required by OSM's license (see https://www.openstreetmap.org/copyright )