Lidka

Lidka is a methuselah that was originally found in the 15-cell form shown below by Andrzej Okrasinski, which has a lifespan of 29053 generations. The 13-cell grandparent with lifespan 29055 shown to the right was soon after found by David Bell. Simon Ekström identified a 13-cell predecessor with a 9×6 bounding box and a lifespan of 29126 on March 8, 2017.[1]

Lidka
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Pattern type Methuselah
Number of cells 13
Bounding box 9×15
MCPS 21
Lifespan 29055 generations
Final population 1623
L/I 2235
F/I 124.8
F/L 0.056
L/MCPS 1383.6
Discovered by Andrzej Okrasinski
David Bell
Year of discovery 2005

Incidentally, the 9-cell pattern in the lower right corner of this pattern, fitting in a 5×5 bounding box, is also a methuselah in its own right: it stabilizes after 595 generations to a constellation of 182 cells.

Stable pattern

The stable pattern that results from Lidka has 1623 cells and consists of 135 blinkers (including seven traffic lights, three Interchanges), 102 blocks, 57 beehives (including two honey farms), 28 gliders, 18 loaves, 15 boats, six ships, five ponds, two tubs, two ship-ties in the form of a fleet, one toad, one beacon, and one long boat.[2]

  • Simon Ekström's 29126-generation version of Lidka
  • Generation 2 of Lidka is the form in which it was originally found
  • Generation 29055
gollark: Although to some extent that's humans anyway.
gollark: Perhaps you would end up with the AIs learning to distinguish training scenarios from not training scenarios, and being awful all the time when not monitored.
gollark: Narrow AIish things can beat humans on narrow tasks like "playing go" already.
gollark: Or at least better-in-most-ways.
gollark: People haven't managed anything better yet, yes.

See also

References
  1. Simon Ekström (March 8, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
  2. Koenig, H. (July 14, 2005). "New Record Methuselah". Retrieved on February 9, 2009.
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