Backrake 2: Difference between revisions
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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 spaceship]]s, 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]]. | '''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 spaceship]]s, 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]]. | Three copies of this backrake feature in [[total aperiodic]]. | ||
==Reduction== | |||
On April 28, {{year|2022}}, [[wwei23]] discovered a 39-cell period-12 backrake that works as a reduced version of Backrake 2 using the [[apgsearch]] custom symmetry WSS_test, that had also found [[35P12H6V0]].[https://conwaylife.com/forums/viewtopic.php?p=144828#p144828] | |||
{{EmbedViewer | |||
|position = center | |||
|pname = Wwei23backrake | |||
|viewerconfig = #C [[ ZOOM 20 Y 6 HEIGHT 480 TRACKLOOP 12288 0 -1/2 THUMBSIZE 2 GPS 4 AUTOSTART ]] | |||
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==See also== | ==See also== | ||
*[[Backrake 1]] | *[[Backrake 1]] | ||
*[[Backrake 3]] | *[[Backrake 3]] | ||
Revision as of 10:59, 17 May 2022
| 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.
Reduction
On April 28, 2022, wwei23 discovered a 39-cell period-12 backrake that works as a reduced version of Backrake 2 using the apgsearch custom symmetry WSS_test, that had also found 35P12H6V0.[1]
| (click above to open LifeViewer) RLE: here Plaintext: here |