Eater 4

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Eater 4
3b2o$3bo$2obo$o2b2o$b2o4bo$3b5o$3bo4b2o$4b2o2bo$6bobo$6bobobo2bo$7b2ob 4o$9bo$9bobo$10b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C Still life #C [[ HEIGHT 480 WIDTH 480 THUMBSIZE 2 ]]
Pattern type Strict still life
Number of cells 40
Bounding box 14×14
Discovered by David Buckingham
Year of discovery 1971

Eater 4 is an eater that was found by David Buckingham in 1971,[citation needed] but was not recognized as an eater until 1975 or 1976. It can't eat gliders, but it can be used in some hasslers, for example a variant of the p29 pre-pulsar shuttle. The four northeast-most center cells regrow in a few generations after being destroyed by taking a bite out of something. See for example the L122 Herschel conduit.

On January 7, 2020, Jeremy Tan found a 14-glider synthesis of this still life.[1]

See also


  1. Jeremy Tan (January 7, 2020). Re: Soup-based syntheses (discussion thread) at the forums

External links