Coe ship

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Coe ship
14b2o$o7bob4ob2o$o7bo2b5o$8bo3b3o$2bo$2bo$12b4o$11bo3bo$15bo$11bo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 16 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 HEIGHT 400 WIDTH 600 ]]
Pattern type Puffer engine
Spaceship
Number of cells 28
Bounding box 17×12
Frequency class 43.4
Direction Orthogonal
Period 16
Mod 16
Speed c/2
Speed (unsimplified) 8c/16
Heat 38.0
Discovered by Tim Coe
Year of discovery 1995

The Coe ship is the first known period-16 c/2 orthogonal spaceship, discovered by Tim Coe on October 26, 1995.[1] It consists of a lightweight spaceship stabilizing a sparky, modified heavyweight spaceship.

Use as a puffer engine

The Coe ship can be used as a puffer engine because it produces a long back spark, which leads to puffers and rakes, as shown below.[2]

x = 44, y = 21, rule = B3/S23 29b4o$28b6o$28b4ob2o$32b2o4$38b6o$26b2o8b2o5bo$25b3o6b2obo5bo$26b3o9bo 3bo$27bobo10bo$12bobo13bo11b2o$12b2o25b4o$13bo25b2ob2o$41b2o$obo27b6o$ 2o27bo5bo$bo33bo$29bo4bo$31b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ ZOOM 16 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 HEIGHT 400 WIDTH 800 ]]
Coe ship powering a backward rake
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 44, y = 24, rule = B3/S23 bo$b2o$obo$29b4o$5bo22b6o$5b2o11b4o6b4ob2o$4bobo10b6o9b2o$17b4ob2o$9bo 11b2o$9b2o$8bobo27b6o$26b2o8b2o5bo$25b3o6b2obo5bo$14b2o10b3o9bo3bo$12b 2o2bo10bobo10bo$12b2ob2o11bo11b2o$13bob2o22b4o$12b2o25b2ob2o$41b2o$18b 2o10b6o$14b4ob2o8bo5bo$14b6o15bo$15b4o10bo4bo$31b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ ZOOM 16 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 HEIGHT 400 WIDTH 800 ]]
Coe ship powering a forward rake
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 25, y = 15, rule = B3/S23 13b2o$10b3ob2o$10b5o$11b3o$8bo$7bobo$19b6o$17b2o5bo$15b2obo5bo$2o6b2o 9bo3bo$2o6bo12bo$21b2o$20b4o$20b2ob2o$22b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ ZOOM 16 TRACKLOOP 64 1/2 0 THUMBSIZE 2 GPS 4 HEIGHT 400 WIDTH 800 ]]
Coe ship powering a block puffer
(click above to open LifeViewer)
RLE: here Plaintext: here

Commonness

Main article: List of common spaceships

The Coe ship appeared in an asymmetric soup found by apgsearch in December 2015,[3] making it the first naturally occurring non-period-4 spaceship. A second Coe ship appeared on Catagolue in June 2016, and four more shortly after. Currently it is the 35th most common naturally occurring spaceship, being more common than HWSS on HWSS 8, but less common than MWSS on HWSS 13.[4]

Glider synthesis

Mark Niemiec found a 9-glider synthesis of this spaceship on October 28, 1995.[1] A 7-glider synthesis was discovered by 2718281828 on December 8, 2017.[5]

See also

References

  1. 1.0 1.1 Tim Coe's p16 puffer engine at Paul Callahan's Page of Conway's Life Miscellany
  2. Jason Summers' pattern collections. Retrieved on March 24, 2016.
  3. Apple Bottom (December 27, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  4. Adam P. Goucher. "Statistics". Catagolue. Retrieved on July 4, 2019.
  5. 2718281828 (December 8, 2017). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums

External links