# 3-engine Cordership

3-engine Cordership | |||||||||||

View static image | |||||||||||

Pattern type | Spaceship | ||||||||||
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Family | Cordership | ||||||||||

Number of cells | 149 | ||||||||||

Bounding box | 58×65 | ||||||||||

Direction | Diagonal | ||||||||||

Period | 96 | ||||||||||

Mod | 48 | ||||||||||

Speed | c/12 | ||||||||||

Heat | 156.1 | ||||||||||

Discovered by | Paul Tooke | ||||||||||

Year of discovery | 2004 | ||||||||||

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The **3-engine Cordership** is a diagonal c/12 spaceship that was discovered by Paul Tooke on January 12, 2004. Until the 2-engine Cordership was found, it was the Cordership that uses 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 2s 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

## See also

## References

- ↑ "New Compact Corderships". Dave Greene (June 18, 2005). Retrieved on June 10, 2009.
- ↑ "Re: Thread For Your Accidental Discoveries". Luka Okanishi (March 12, 2017). Retrieved on March 13, 2017.
- ↑ "First complete glider-to-Cordership converter". Dave Greene (February 7, 2009). Retrieved on June 15, 2009.

## External links

- 3-engine Cordership at Adam P. Goucher's Catagolue (extended)

- 149P96H8V8.1 at Heinrich Koenig's Game of Life Object Catalogs

- Patterns
- Patterns with 149 cells
- Patterns found by Paul Tooke
- Patterns found in 2004
- Patterns that can be constructed with 11 gliders
- Spaceships
- Spaceships with period 96
- Diagonal spaceships
- Spaceships with speed c/12
- Spaceships with heat 156
- Cordership variants
- Spaceships with mod 48
- Glide symmetric spaceships