Difference between revisions of "3-engine Cordership"
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The '''3-engine Cordership''' is a | The '''3-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by [[Paul Tooke]] on January 12, {{year|2004}}. Until the [[2-engine Cordership]] was found, it was the [[Cordership]] that used the fewest number of known possible [[switch engine]]s. Despite this, the [[4-engine Cordership]] is smaller in terms of minimum population (the [[2-engine Cordership]] beating both). | ||
[[ | [[David Bell]] discovered in {{year|2005}} that the 3-engine Cordership can be used to turn a [[lightweight spaceship]] 90 degrees as shown below.<ref>{{cite web|url=http://pentadecathlon.com/lifeNews/2005/06/new_compact_corderships.html |title=New Compact Corderships |publisher=Dave Greene |date=June 18, 2005|accessdate=June 10, 2009}}</ref> It could be [[glider synthesis|constructed]] with 15 [[glider]]s, 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.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=279&p=41558#p41557 |title=Re: Thread For Your Accidental Discoveries|publisher=Luka Okanishi|date=March 12, 2017|accessdate=March 13, 2017}}</ref> | ||
The 3-engine Cordership can easily be destroyed by three [[eater | The 3-engine Cordership can easily be destroyed by three [[eater 1]]s and four [[block]]s, as shown below. This cleanup reaction was found by [[Jason Summers]]. | ||
==Incremental construction== | ==Incremental construction== | ||
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|pname = 3enginecordershipeater | |pname = 3enginecordershipeater | ||
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|caption = 3-engine Cordership eater using [[eater | |caption = 3-engine Cordership eater using [[eater 1]]s and [[block]]s<br> | ||
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|pname = | |pname = 3enginecordershiplwssreflection | ||
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|caption = 3-engine Cordership about to reflect a lightweight spaceship by 90 degrees | |caption = 3-engine Cordership about to reflect a lightweight spaceship by 90 degrees<br> | ||
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Revision as of 04:28, 28 December 2019
| 3-engine Cordership | |||||||||
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| Pattern type | Spaceship | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Family | Cordership | ||||||||
| Number of cells | 149 | ||||||||
| Bounding box | 58 × 65 | ||||||||
| Direction | Diagonal | ||||||||
| Period | 96 | ||||||||
| Mod | 48 | ||||||||
| Speed | c/12 | 8c/96 | ||||||||
| Heat | 156.1 | ||||||||
| Discovered by | Paul Tooke | ||||||||
| Year of discovery | 2004 | ||||||||
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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
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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
Categories:
- Patterns
- Spaceships with between 140 and 149 cells
- Periodic objects with minimum population between 140 and 149
- Patterns with between 140 and 149 cells
- Patterns found by Paul Tooke
- Patterns found in 2004
- Patterns that can be constructed with 11 gliders
- Outer-totalistically endemic patterns
- Isotropically endemic patterns
- Spaceships
- Spaceships with period 96
- Diagonal spaceships
- Spaceships with speed c/12
- Spaceships with unsimplified speed 8c/96
- Spaceships with heat between 150 and 159
- Cordership variants
- Spaceships with mod 48
- Glide symmetric spaceships