Puffer 2

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Puffer 2
x = 18, y = 5, rule = B3/S23 b3o11b3o$o2bo10bo2bo$3bo4b3o6bo$3bo4bo2bo5bo$2bo4bo8bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 20 AUTOSTART OFF ]]
Pattern type Puffer
Number of cells 22
Bounding box 18×5
Direction Orthogonal
Period 140
Speed c/2
Discovered by Bill Gosper
Year of discovery Unknown

Puffer 2 was the second puffer to be found and was discovered by Bill Gosper.[1] It is extremely dirty and its tail does not stabilize until generation 5533, after which it stays at period 140. It consists of a B-heptomino (shown here one generation before its standard form) escorted by two lightweight spaceships at a period of 20. Its debris can be stabilized by a third lightweight spaceship as in ecologist. A pulsar is formed at the south-western side in generation 4957.

See also


  1. Robert Wainwright (September 1971). Lifeline, vol 3, page 6.

External links