Garden of Eden / Orphan

On 1st December 2009, Nicolay Beluchenko from Russia again improved the record for the fewest number of living cells of any known Garden of Eden configuration by constructing this half-rotation symmetric pattern . It has 47 living cells and its corresponding orphan which needs a total of 115 cells thus has a corresponding on-cell density of only about 0.409.

Also he discovered on the same day this totally diagonal reflection symmetric 51-bit orphan variante which sets a new record with only 107 needed defined cells.

As usual the challenge remains: Can you find a smaller one --- i.e. proving that your example has no predecessor in Game of Life and has fewer living cells or fewer total number of cells as any orphan? YES

Overview of current, 2009-12-01, standings for Garden of Eden and Orphans record holding attributs:
fewest number of living cells47
fewest number of totally needed cells107
smallest rectangular bounding box11x11 , 12x10
lowest density of living cells0.409

Achim Flammenkamp
Last update: Bielefeld, den 2009-12-21 15:13:32   o'clock