leonardo m.I'll offer few more Bongard problems on this topic created by other people, as an introduction. This is Jago Collins problem n.391. Try to write your solution (with a spoiler if you want). I'll give my solution under a spoiler in few hours. For the problems created by others I'll keep a faster pace.
For more info about Bongard problems in general take a look at my first messages:
https://mathstodon.xyz/@leonardom/116110015131667314
https://mathstodon.xyz/@leonardom/116110093951382315
