Field guide No. 1512

An empty indoor basketball court at sunset, where one white boundary line crosses the floor and then climbs straight up the far wall. The ball is out if it touches the wall, the ceiling, or the idea.

The impossible boundary line

Out of bounds, upward.

An empty indoor basketball court at sunset, where one white boundary line crosses the floor and then climbs straight up the far wall. The ball is out if it touches the wall, the ceiling, or the idea.

Field noteCourt markings are only paint, and paint climbs walls happily; the referee is who would object.

Specimen
No. 1512
Kind
Possible (the golden mountain kind)
Breaks
Nothing
Where it doesn’t exist
An empty sports hall at sunset, past the far baseline.
Nearest existing relative
A chalk line on a pitch.
Filed in Fresh slop as
Spaces

Also possible, also breaking nothing