Left-sorted BPs have the keyword "left-self" on the OEBP. Right-sorted BPs have the keyword "right-self."
These keywords are added to pages automatically.
Rhetorical questions: Where does this BP sort itself? Where does this BP sort the flipped version of itself?
CROSSREFS
See BP793 for the version sorting pictures of Bongard Problems (miniproblems) instead of links to pages on the OEBP.
See BP1075 for an example of a BP that is tagged "left-self" but would still be tagged "left-self" after the sides in the title were flipped. (This is unusual; a "left-self" BP after being flipped is typically "right-self" and vice versa.)
"Impossible Bongard Problem" is a loose term, but it roughly means the Bongard Problem can't be displayed as an image.
BP868, the version of this whose examples are images of Bongard Problems (miniproblems), rather than links to pages on the OEBP, is impossible. - Aaron David Fairbanks, Jul 29 2020
CROSSREFS
See overriddensolution for Problem solutions that Bongard Problems can have, but that will not be chosen by a reasonable person as the best solution.