Backrake 3

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Backrake 3
Backrake 3 image
Pattern type Rake
Number of cells 124
Bounding box 103×22
Direction Orthogonal
Period 64
Speed c/2
Discovered by Unknown
Year of discovery Unknown

Backrake 3 is a period 64 backrake that was found in the early 1970s. It is most notable for being used in the construction of breeder 1. It consists of a puffer 1 together with two additional heavyweight spaceships and four middleweight spaceships to convert the debris into gliders.[1] Although it emits a glider every 32 generations, the debris cleanup takes 64 generations to complete, making it a pseudo period-32 rake.


  1. Alan Hensel's pattern collection.