c/5 diagonal rake

The c/5 diagonal rake is a variable-period rake that fires gliders as it moves diagonally at a speed of c/5. It was constructed by Matthias Merzenich on 7th September 2010 and subsequently entered into the Pattern of the Year competition. It is composed of copies of 58P5H1V1 which catalyse the duplication of a circulating glider. The original version had a period of 1585.[1]

c/5 diagonal rake
<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html> #C p450 diagonal rake used in Paul Rendell's stack constructor #C by Matthias Merzenich and Adam P. 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2o$334bo2bo9b2o11b3o$334bo12bo14bo$348b2o11bo$335b2o$337bo12bo$336b2o 9bo2bo$336b2o10b2o2$305b2o$303b2o2bo$303b3o$303bobo$299b4o2bo$299b3o3b o$301bob2o$300bo6bo$300b2o4bo$302b3o$298b2o$298b2o$298b2o$295b3o$289b 2o4b3o26bo$289b2ob2o28b2o$289b3obo29b2o$289bo4bo$286b3o2bo2bo$286b2o3b o2bo21b2o$285bob4o24bo2bo$285bo7bo20b2o2bo$286bo5bo21bo2b3o$311b2obo2b 3o$310b2o5b2o$317b2o$310b2ob5o$312b5o2$310bo$309b2o$309bo$307b2o$301bo bo2b2o$300b2obo$300bo3bo$303b2o$298b3o2b2o$297b2o4b2o$296bo6b2o$296bo 2b5o$297b6o$299b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ THUMBSIZE 2 ZOOM 1 TRACKLOOP 450 -1/5 -1/5 WIDTH 640 HEIGHT 1000 POPUPWIDTH 640 POPUPHEIGHT 480 GPS 40 AUTOSTART OFF ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> File:C5diagonalrake.png <html></noscript></canvas></div></html>
View static image
Pattern type Rake
Puffer
Direction Diagonal
Period 450
Speed c/5
Discovered by Matthias Merzenich
Year of discovery 2010

The period-450 version in the infobox was created by adjusting the period of the glider loop and inserting multiple circulating gliders to obtain a proper divisor thereof. By using a kickback reaction, this version is appropriate for inserting gliders into salvos, and was used in the second version of Paul Rendell's fully universal Turing machine to construct the stacks.

The c/5 diagonal rake ranked third place in the Pattern of the Year 2010 competition on the ConwayLife.com forums, behind the phi calculator and Gemini.[2]

See also

References
  1. Matthias Merzenich (Sep 7, 2010). "Re: Pattern of the Year 2010 competition". Retrieved on Jan 27, 2019.
  2. Adam P. Goucher (January 17, 2011). Re: Votes for Pattern of the Year 2010 (discussion thread) at the ConwayLife.com forums
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