c/5 diagonal

From LifeWiki
Revision as of 17:56, 3 April 2020 by Calcyman (talk | contribs) (→‎Puffers: Naszvadi's puffer)
Jump to navigation Jump to search
c/5 diagonal
Spaceship Yes
Puffer Yes
Rake Yes
Wickstretcher Yes
Gun No

c/5 diagonal is a diagonal speed that is equivalent to one fifth of the speed of light.


The first c/5 diagonal spaceship to be discovered was 295P5H1V1 and was found by Jason Summers on November 22, 2000.[1] No other spaceships of this speed were discovered until January 8, 2005, when Jason summers found the much smaller 86P5H1V1. In July 2006 Nicolay Beluchenko discovered three new c/5 diagonal spaceships, including the asymmetric 67P5H1V1.[2] The smallest known c/5 diagonal spaceship, 58P5H1V1, was discovered by Matthias Merzenich on September 5, 2010.[3]

After a gap of several years, on March 26-27, 2020, AforAmpere found 138P5H1V1 and 171P5H1V1, new c/5 diagonal ships with a different shape from previous discoveries.[4]

The first glider synthesis for a c/5 diagonal spaceship was found by Goldtiger997 and Tanner Jacobi in April 2020.[5][6] A gun based on this synthesis has yet to be constructed.


x = 63, y = 63, rule = B3/S23 55bo5bo$54bo7bo$57b4obo$53bo2bo3b2o$53bo2bo2b3o$53bo4bo$54bob3o$54b2ob 2o$50b3o4b2o$50b3o$48b2o$48b2o$48b2o$43b3o$41bo4b2o$40bo6bo$43b2obo$ 42bo3b3o$42bo2b4o$42bobo$42b3o$40bo2b2o$41b2o12$49bo5bo$48bo7bo$51b4ob o$47bo2bo3b2o$47bo2bo2b3o$47bo4bo$15bo5bo26bob3o$14bo7bo25b2ob2o$17b4o bo21b3o4b2o$13bo2bo3b2o9bo12b3o$13bo2bo2b3o7bobo10b2o$13bo4bo11b2o10b 2o$14bob3o23b2o$14b2ob2o18b3o$10b3o4b2o16bo4b2o$10b3o21bo6bo$8b2o27b2o bo$8b2o26bo3b3o$8b2o26bo2b4o$3b3o30bobo$bo4b2o28b3o$o6bo26bo2b2o$3b2ob o28b2o$2bo3b3o$2bo2b4o$2bobo$2b3o$o2b2o$b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART THUMBSIZE 2 WIDTH 600 HEIGHT 600 ZOOM 6 GPS 40 TRACK 1/5 1/5 ]]
three-ship puffer by P. Naszvadi (click above to open LifeViewer)
RLE: here Plaintext: here
the first c/5 diagonal puffer to be discovered
Download RLE: click here

The first c/5 diagonal puffer was built by Matthias Merzenich on September 5, 2010.[3] It consists of four copies of 58P5H1V1 continually hassling a glider, leaving debris behind at a period of 1450.

A period-1540 glide-symmetric three-ship puffer was discovered by P. Naszvadi in March 2020, shown to the left.


The first clean c/5 diagonal rake was constructed by Matthias Merzenich on September 7, 2010.[3] The rake has a period of 1585 and works by circulating two gliders.


The first c/5 diagonal wickstretcher was found by Matthias Merzenich on January 26, 2011.[3] It consists of a tagalong pulled by two copies of 58P5H1V1 that stretches two tubs.

See also


  1. Jason Summers' jslife pattern collection.
  2. Heinrich Koenig (July 15, 2006). "New c/5 Diagonal Spaceships". Game of Life News.
  3. 3.0 3.1 3.2 3.3 Adam P. Goucher (January 26, 2011). "New c/5 diagonal technology". Game of Life News.
  4. AforAmpere (March 26, 2020). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  5. Tanner Jacobi (April 2, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  6. Goldtiger997 (April 3, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums

External links