1 beacon

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1 beacon
2b2o3b$bobo3b$o2bob2o$2obo2bo$bobo3b$bo2bo2b$2b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 1 THUMBSIZE 2 ]]
Pattern type Oscillator
Family Beacon
Number of cells 18
Bounding box 7×7
Frequency class 29.4
Period 2
Mod 2
Heat 2
Volatility 0.10
Strict volatility 0.10
Rotor type Diagonal on-off
Discovered by Unknown
Year of discovery Unknown

1 beacon is a period-2 oscillator.


1 beacon is about the thirty-second most common naturally-occurring oscillator in Achim Flammenkamp's census, being slightly less common than the cis-beacon up on long hook, approximately as common as the cis-beacon on cap, and more common than 20P2.[1]


In October 2014, Ivan Fomichev found an 8-glider synthesis for this pattern based on a soup from Adam P. Goucher's apgsearch script.[2] Tanner Jacobi later found a 7-glider synthesis.

See also


  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  2. "Soup search results". Retrieved on November 9, 2014.

External links

  • 18P2.465 at Heinrich Koenig's Game of Life Object Catalogs