This is a generalisation of BP861.
Finitely many copies of the shape can be arranged such that they are locked together vs. not so.
Finitely many copies of the shape can be arranged in such a way that no one copy can be removed in 2D vs. not so.
Finitely many copies of the shape can be arranged in such a way that no one copy can be removed in @D vs. not so.
Finitely many copies of the shape can be arranged in such a way that no one copy can be removed vs. not so.
Finitely many copies of the shape can be arranged in such a way that no one copy can be slid removed vs. not so.
Leo Crabbe
Metaworld Bongard Problems for sub-worlds of finitely many non-crossing line segments (BP859) vs. other metaworld Bongard Problems.
Aaron David Fairbanks