Twin hat

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Twin hat
Twin hat image
Pattern type Strict still life
Number of cells 17
Bounding box 9×5
Discovered by Unknown
Year of discovery Unknown

Twin hat (or twin peaks, or bi-hat) is a 17-cell still life that roughly consists of two hats.


Twin hat is the thirty-sixth most common still life in Achim Flammenkamp's census, being less common than block and dock but more common than beehive and dock; [1] it is the most common object in this census for which no four-glider synthesis is known. The twin hat is also the fourty-eighth most common object on Adam P. Goucher's Catagolue.[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. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

External links

  • Twin hat at Eric Weisstein's Treasure Trove of Life