c/5 diagonal rake

c/5 diagonal rake
#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 ]] #C [[ THUMBSIZE 2 ZOOM 1 WIDTH 640 HEIGHT 1000 LOOP 5400 ]] #C [[ PAUSE 2 PAUSE 2 X -240 Y -440 ZOOM 4 ]] #C [[ T 417 X -350 Y -360 ]] #C [[ T 678 X -370 Y -320 ]] #C [[ T 852 X -390 Y -320 ZOOM 4 ]] #C [[ T 1252 X -330 Y -320 ]] #C [[ T 1497 X -280 Y -440 ZOOM 8 ]] #C [[ T 1686 X -280 Y -440 ]] #C [[ T 2250 X -690 Y -890 ZOOM 4 PAUSE 2 ]] #C [[ T 2637 X -630 Y -600 ]] #C [[ T 3042 X -680 Y -530 ]] #C [[ T 3552 X -680 Y -530 ]] #C [[ T 3871 X -760 Y -420 ]] #C [[ T 4078 X -720 Y -420 ]] #C [[ T 4530 X -610 Y -530 PAUSE 2 ]] #C [[ PAUSE 2 X -906 Y -906 ZOOM 1 ]] #C [[ T 5400 X -1080 Y -1080 ]]
View static image
Pattern type	Rake Puffer
Number of cells	3146
Bounding box	570 × 884
Direction	Diagonal
Period	450
Speed	c/5
Discovered by	Matthias Merzenich
Year of discovery	2010
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1 Isotropic rules B3/S23 – B3/S234c
Pattern files RLE c5diagonalrake.rle

The c/5 diagonal rake is a variable-period rake that fires gliders as it moves diagonally at a speed of c/5. It is composed of copies of 58P5H1V1 that reflect and duplicate several circulating gliders.

The original version with a period of 1585 was constructed by Matthias Merzenich on September 7, 2010. Subsequently it ranked third place in the Pattern of the Year 2010 competition on the ConwayLife.com forums, behind the phi calculator and Gemini.

Later 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. The design has a minimum period of 235. After emission, the output gliders enter some extra conduits ending with a 90-degree kickback; this 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.

See also

• Weekender distaff