Block on griddle

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Block on griddle
3bo2b$bobo2b$o4bo$6o2$2b2o2b$2b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Family Griddle
Number of cells 15
Bounding box 6×7
Frequency class 30.0
Period 2
Mod 1
Heat 6
Volatility 0.33
Strict volatility 0.33
Rotor type Flutter
Discovered by Robert Wainwright
Year of discovery 1972

Block on griddle (or singular flip flop) is a period 2 oscillator that was discovered by Robert Wainwright in July 1972.


Block on griddle is about the thirty-sixth most common naturally-occurring oscillator in Achim Flammenkamp's census, being slightly less common than the cis-beacon down on long hook, approximately as common as the boat on spark coil, and more common than fore and back and 21P2.[1]


In October 2014, Ivan Fomichev found a 6-glider synthesis for this pattern based on a soup from Adam P. Goucher's apgsearch script.[2]

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

  • 15P2.28 at Heinrich Koenig's Game of Life Object Catalogs