Difference between revisions of "Two blockers hassling R-pentomino"

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(The RFx36R and its ability to make 60P72 has been known since sometime before August 2016 -- otherwise the RFx36R wouldn't have gotten into the ECC in the first place)
(Still life stabilization by Tanner Jacobu)
Line 6: Line 6:
 
|by              = 19
 
|by              = 19
 
|p                = 72
 
|p                = 72
 +
|m                = 36
 
|h                = 34.1
 
|h                = 34.1
 
|v                = 0.97
 
|v                = 0.97
Line 25: Line 26:
 
'''47P72''' (or '''two blockers hassling R-pentomino'''<ref>{{Cite web|url=http://conwaylife.com/ref/mniemiec/period.htm#p72|title=Life Oscillators and Pseudo-Oscillators|author=Mark D. Niemiec|accessdate=December 9, 2018}}</ref>) is a [[period]] [[:Category:Oscillators with period 72|72]] [[oscillator]]. It was the first period 72 oscillator to be found,<ref>[[Dean Hickerson]]'s ''DRH-oscillators.rle'' oscillator collection, retrieved on May 15, 2009</ref> and was discovered by [[Robert Wainwright]] in July [[:Category:Patterns found in 1990|1990]].
 
'''47P72''' (or '''two blockers hassling R-pentomino'''<ref>{{Cite web|url=http://conwaylife.com/ref/mniemiec/period.htm#p72|title=Life Oscillators and Pseudo-Oscillators|author=Mark D. Niemiec|accessdate=December 9, 2018}}</ref>) is a [[period]] [[:Category:Oscillators with period 72|72]] [[oscillator]]. It was the first period 72 oscillator to be found,<ref>[[Dean Hickerson]]'s ''DRH-oscillators.rle'' oscillator collection, retrieved on May 15, 2009</ref> and was discovered by [[Robert Wainwright]] in July [[:Category:Patterns found in 1990|1990]].
  
It is made up of two [[blocker]]s that are [[hassle|hassling]] two [[block]]s and an [[R-pentomino]]. It makes appearances in many large [[gun]]s such as the [[gunstar]]s and [[new gun 2]]. Here is the related 60P72 oscillator, where the R-pentomino is hassled by still lifes instead of blockers.
+
It is made up of two [[blocker]]s that are [[hassle|hassling]] two [[block]]s and an [[R-pentomino]]. It makes appearances in many large [[gun]]s such as the [[gunstar]]s and [[new gun 2]]. On January 12, 2016 [[Tanner Jacobi]] found a way to replace the blockers with [[still life]]s.<ref>{{Cite web|url=http://conwaylife.com/forums/viewtopic.php?f=2&t=1599&start=750#p26652|title=Re: The Hunting of the New Herschel Conduits|author=Tanner Jacobi|accessdate=December 9, 2018}}</ref>
 
 
 
{{EmbedViewer
 
{{EmbedViewer
 
|pname        = 60p72
 
|pname        = 60p72
 
|viewerconfig = #C [[ THUMBNAIL THUMBSIZE 2 HEIGHT 360 THEME 6 GPS 36 LOOP 72 ZOOM 10 AUTOSTART ]]
 
|viewerconfig = #C [[ THUMBNAIL THUMBSIZE 2 HEIGHT 360 THEME 6 GPS 36 LOOP 72 ZOOM 10 AUTOSTART ]]
 
|position    = center
 
|position    = center
 +
|caption      = Still life-supported oscillator by Tanner Jacobi
 
}}
 
}}
  

Revision as of 00:25, 10 December 2018

47P72
47P72 image
Pattern type Oscillator
Number of cells 47
Bounding box 30×19
Period 72
Mod 36
Heat 34.1
Volatility 0.97
Strict volatility 0.70
Discovered by Robert Wainwright
Year of discovery 1990

47P72 (or two blockers hassling R-pentomino[1]) is a period 72 oscillator. It was the first period 72 oscillator to be found,[2] and was discovered by Robert Wainwright in July 1990.

It is made up of two blockers that are hassling two blocks and an R-pentomino. It makes appearances in many large guns such as the gunstars and new gun 2. On January 12, 2016 Tanner Jacobi found a way to replace the blockers with still lifes.[3]

x = 26, y = 20, rule = B3/S23 o24bo$3o20b3o$3bo18bo$2b2o18b2o3$19bo$19b2o$9b2o9bo$8b2o9bo$8bo8bobo$ 9bo7bobo$5b2o11bo$5b2o3$7b2o8b2o$3b2obobo8bobob2o$3bob2obobo4bobob2obo $9b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBNAIL THUMBSIZE 2 HEIGHT 360 THEME 6 GPS 36 LOOP 72 ZOOM 10 AUTOSTART ]]
Still life-supported oscillator by Tanner Jacobi (click above to open LifeViewer)
RLE: here Plaintext: here

References

  1. Mark D. Niemiec. "Life Oscillators and Pseudo-Oscillators". Retrieved on December 9, 2018.
  2. Dean Hickerson's DRH-oscillators.rle oscillator collection, retrieved on May 15, 2009
  3. Tanner Jacobi. "Re: The Hunting of the New Herschel Conduits". Retrieved on December 9, 2018.

External links