3-engine Cordership: Difference between revisions
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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). | 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>{{ | [[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>{{LinkGoLNews|2005/06/new_compact_corderships.html|title=New Compact Corderships|date=June 18, 2005|author=Dave Greene}}</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=https://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 1]]s and four [[block]]s, as shown below. This cleanup reaction was found by [[Jason Summers]]. | 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]]. | ||
Revision as of 08:01, 1 June 2022
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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 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| 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.
On September 15, 2020, wwei23 discovered several variant 3-engine Corderships, including one that cleans up its trailing blocks with sideways gliders, similar to a 5-, 6-, or 7-in-a-row Cordership.[3]
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.[4]
Image gallery
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See also
References
- ↑ New Compact Corderships at Game of Life News. Posted by Dave Greene on June 18, 2005.
- ↑ "Re: Thread For Your Accidental Discoveries". Luka Okanishi (March 12, 2017). Retrieved on March 13, 2017.
- ↑ "Re: Thread For Your Unsure Discoveries". wwei23 (September 15, 2020). Retrieved on September 28, 2020.
- ↑ "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
- 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
- Engineered spaceships
- Non-monotonic spaceships
- Glide symmetric spaceships