Opposite (inverse) transformations have been applied to the same specific small square on opposite sides of the dividing line versus not so.

Conceptually opposite transformations have been applied to the same specific small square on opposite sides of the dividing line versus not so.

The original pre-transformed square is the same across all examples, however it is not shown in most examples; what the pre-transformed square looks like must be deduced by the solver.

Aaron David Fairbanks

Metaworld Bongard Problems for sub-worlds of shape outline or non-self-intersecting curve (BP550) vs. other metaworld Bongard Problems.

Aaron David Fairbanks