No room! No room! they cried out when they saw Alice coming.
—Lewis Carroll, Alice's Adventures in Wonderland

The exclusion problem is to remove as few cells as possible from a given figure or the plane so as to exclude a given polyform.

Hexomino Exclusion. Exclude a hexomino from a checkerboard.
Polyking Exclusion. Exclude a polyking from a checkerboard.
Polyiamond Exclusion. Exclude a polyiamond from the plane.
Polyhex Exclusion. Exclude a polyhex from the plane.

Back to Polyform Curiosities.
Col. George Sicherman [ HOME | MAIL ]