Backrake 2
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Backrake 2 | |||||||||||
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Pattern type | Rake Puffer | ||||||||||
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Number of cells | 65 | ||||||||||
Bounding box | 19×26 | ||||||||||
Direction | Orthogonal | ||||||||||
Period | 12 | ||||||||||
Speed | c/2 | ||||||||||
Discovered by | David Buckingham | ||||||||||
Year of discovery | Unknown | ||||||||||
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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.