Smaller Garden of Eden pattern
Achim Flammenkamp's 81-cell 13x12 orphan from 14 June 2004.
Single cell in rightmost column removed, and two other cells moved.
Nicolay Beluchenko, 11 February 2006
UPDATE: A week after producing the pattern on which Nicolay Beluchenko based his optimized version, Achim Flammenkamp built a smaller Garden of Eden pattern consisting of 72 ON cells inside a 12x11 bounding box. This 23 June 2004 discovery is the smallest Garden of Eden currently known.