Backrake 2

	Backrake 2
	<a href="/wiki/File:Backrake2.png" class="image" title="Backrake 2 image"><img alt="Backrake 2 image" src="/w/images/9/95/Backrake2.png" decoding="async" width="93" height="121" /></a>
	<a href="/wiki/File:Backrake2.png" class="image" title="Backrake 2 image"><img alt="Backrake 2 image" src="/w/images/9/95/Backrake2.png" decoding="async" width="93" height="121" /></a>
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Pattern type	Rake; Puffer
Number of cells	65
Bounding box	19×26
Direction	Orthogonal
Period	12
Speed	c/2
Discovered by	David Buckingham
Year of discovery	Unknown
Glider synthesis
Fewest gliders	17
Uploaded synthesis RLE	backrake2_synth.rle
Pattern files
Plaintext	backrake2.cells
RLE	backrake2.rle

Backrake 2 is a period 12 backrake that was created by David Buckingham. It works by having a front puffer made up of two lightweight spaceships, a middleweight spaceship, and a B-heptomino (much like puffer 2) send debris back to another lightweight and middleweight spaceship, which turn the debris into a backward-moving glider.

Three copies of this backrake feature in total aperiodic.

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