Left examples have keyword "lateralexample" on the OEBP.
Users are encouraged to contribute new interesting examples to Problems with this keyword.
There is much overlap with right-BP864 ("hardsort").
Bongard Problems that admit examples fitting the solution in various creative ways vs. not so.
Bongard Problems that admit examples fitting the solution in creative ways vs. not so.
Aaron David Fairbanks
Metaworld Bongard Problems for sub-worlds of finitely many shape outlines allowed to cross and nest (BP865) vs. other metaworld Bongard Problems.