3-engine Cordership
```
31b3o24b$32bo25b$32bo2bo22b$32bo2bo22b$33bobo22b$48b2o8b$48b2o8b3$32bo
25b$31bobo24b$32bo25b$49bo8b$48bo7b2o$30b4o22b2o$30b2o3bo10bo11b$31bo
4bo9bobo9b$33bob2o10bo10b$34bo23b3$42bobob2o10b$25bo16bobo13b$24b3o17b
o2bo10b$43bo3bo10b$24b3o16b4o2b2o7b$25b2ob2o14bo5b2o6b$27bo21bo8b3$b3o
54b$2bo55b$2bo2bo52b$2bo2bo52b$3bobo52b$18b2o38b$18b2o38b$24bo33b$23b
3o32b$2bo19b2ob2o31b$bobo18bobo33b$2bo19bo35b3$4o54b$2o3bo13bo38b$bo4b
o11bobo37b$3bob2o11bo39b$4bo15b2o36b$21bo36b$18b3o37b$19b2o37b$16bo41b
$16b2o40b$16b2o40b$6b2o6b2o42b$6b2o4b2o44b$12b2obo42b$14b2o42b5$14b2o
42b$14b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART ]]
#C [[ ZOOM 4 TRACKLOOP 96 -1/12 -1/12 THUMBSIZE 2 GPS 12 HEIGHT 480 WIDTH 480 ]]
```

View static image
Pattern type
Spaceship
Family
Cordership
Number of cells
149
Bounding box
58×65
Direction
Diagonal
Period
96
Mod
48
Speed
c/12
Speed (unsimplified)
8c/96
Heat
156.1
Discovered by
Paul Tooke
Year of discovery
2004

The 3-engine Cordership is a c/12 diagonal spaceship that was discovered by Paul Tooke on January 12, 2004 . Until the 2-engine Cordership was found, it was the Cordership that used the fewest number of known possible switch engines . Despite this, the 4-engine Cordership is smaller in terms of minimum population (the 2-engine Cordership beating both).

David Bell discovered in 2005 that the 3-engine Cordership can be used to turn a lightweight spaceship 90 degrees as shown below.^{[1]} It could be constructed with 15 gliders , and Tooke created a gun for this spaceship only a week after its original construction (see 3-engine Cordership gun ). In March 2017 Luka Okanishi discovered a three-glider synthesis for a switch engine, which reduced the recipe to only 11 gliders.^{[2]}

The 3-engine Cordership can easily be destroyed by three eater 1s and four blocks , as shown below. This cleanup reaction was found by Jason Summers .

Incremental construction
Dave Greene discovered a glider synthesis for upgrading a switch engine to a wing, which can be repeated to form the complete Cordership. Adam P. Goucher then built a Herschel conduit to convert a glider into a 3-engine Cordership.^{[3]}

Image gallery
```
x = 87, y = 95, rule = B3/S23
46b2o$25bo20b2o$25b3o$28bo$27b2o4$54b2o$54b2o15$18bo$18b3o$21bo$20b2o
3$60b3o$61bo$61bo2bo$b2o58bo2bo$2bo59bobo$2bobo72b2o$3b2o72b2o3$61bo$
60bobo$61bo$78bo$77bo7b2o$59b4o22b2o$59b2o3bo10bo$60bo4bo9bobo$62bob2o
10bo$63bo3$71bobob2o$54bo16bobo$53b3o17bo2bo$2o70bo3bo$2o51b3o16b4o2b
2o$54b2ob2o14bo5b2o$56bo21bo3$30b3o$31bo$8b2o21bo2bo$8b2o21bo2bo$32bob
o$47b2o$47b2o$53bo$52b3o$31bo19b2ob2o$30bobo18bobo$31bo19bo3$29b4o$29b
2o3bo13bo$30bo4bo11bobo$32bob2o11bo$33bo15b2o$50bo$47b3o$48b2o$45bo$
45b2o$45b2o$35b2o6b2o$35b2o4b2o$41b2obo$43b2o5$43b2o$43b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
[[ ZOOM 5 HEIGHT 480 ]]
```

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3-engine Cordership eater using eater 1s and blocks (click above to open LifeViewer )RLE : here Plaintext : here

```
x = 63, y = 68, rule = B3/S23
36b3o$37bo$37bo2bo$37bo2bo$38bobo$53b2o$53b2o3$37bo$36bobo$37bo$54bo$
53bo7b2o$35b4o22b2o$35b2o3bo10bo$36bo4bo9bobo$38bob2o10bo$39bo3$47bobo
b2o$30bo16bobo$29b3o17bo2bo$48bo3bo$29b3o16b4o2b2o$30b2ob2o14bo5b2o$
32bo21bo3$6b3o$7bo$7bo2bo$7bo2bo$8bobo$23b2o$23b2o$29bo$28b3o$7bo19b2o
b2o$6bobo18bobo$7bo19bo3$5b4o$5b2o3bo13bo$6bo4bo11bobo$8bob2o11bo$9bo
15b2o$26bo$23b3o$24b2o$21bo$21b2o$21b2o$11b2o6b2o$11b2o4b2o$17b2obo$
19b2o5$19b2o$b2o16b2o$4o$2ob2o$2b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
[[ ZOOM 6 HEIGHT 480 ]]
```

Please enable Javascript to view this LifeViewer.

3-engine Cordership about to reflect a lightweight spaceship by 90 degrees (click above to open LifeViewer )RLE : here Plaintext : here

See also
References
External links
149P96H8V8.1 at Heinrich Koenig's Game of Life Object Catalogs