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bo3bo3bo$obobobobobo$obobobobobo$b2obobob2o$4bobo$4bobo$3b2ob2o$2bo4bo $2b2ob2o$3bobo$2bo2bo$2bobo$b2ob2o! #C [[ THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH AUTOSTART ]] #C [[ THUMBSIZE 2 HEIGHT 480 ]]
Pattern type Strict still life
Number of cells 45
Bounding box 11×13
Discovered by Adam P. Goucher
Year of discovery 2016

Cthulhu is a 45-cell still life.

One form of this still life (systematically called trans-Cthulhu) was found in the ash of a random soup by Adam P. Goucher on May 3, 2016.[1], despite it being an unusually large for a natural still life. 'BlinkerSpawn' found a 15-glider synthesis of Cthulhu on the same day,[2] which Mark Niemiec improved to 12 gliders on May 6.[3]

Cthulhu is one of the largest known still lives to have occured naturally, and once the biggest; the title was taken by professor in July 2016, and more recently the cloverleaf interchange.



The "tentacles" of Cthulhu are made of a sidewalk connected to the main body of the object (mainly comprising of a long³ hat stabilized by two buns). Reflecting the sidewalk produces the cis-version of Cthulhu, shown to the left; Mark Niemiec found a 13-glider synthesis on May 6.[3]


  1. Adam P. Goucher (May 3, 2016). "Haul". Catagolue. Retrieved on May 5, 2016.
  2. BlinkerSpawn (May 3, 2016). "Re: Soup search results". ConwayLife.com forums. Retrieved on May 5, 2016.
  3. 3.0 3.1 Mark Niemiec (May 6, 2016). "Re: Soup search results". ConwayLife.com forums. Retrieved on May 6, 2016.

External links