Eater/block frob

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Eater/block frob
x = 10, y = 10, rule = B3/S23 b2o$2bo$2bobo$3bobo$5b2ob2o$8b2o$2b2o$3bo$3o$o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 4 GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Number of cells 20
Bounding box 10×10
Period 4
Mod 4
Heat 8.5
Volatility 0.55
Strict volatility 0.55
Discovered by David Buckingham
Year of discovery Unknown

Eater/block frob is a period-4 oscillator found by David Buckingham in 1976 or earlier.[1] It is composed of an eater 1, a block, and what is roughly a hook with tail. It is most useful in its use in the p4 bumper. It is an eater 5 constantly being renewed by an eater 1. The block can be replaced with a long hook with tail, and the eater 1 can be replaced with a LW emulator, MW emulator or HW emulator.


  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.

External links

  • 20P4.4 at Heinrich Koenig's Game of Life Object Catalogs