Difference between revisions of "2-engine Cordership"
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The '''2-engine Cordership''' is a diagonal [[:Category:Spaceships with speed c/12|c/12]] [[spaceship]] that was discovered by Aidan F. Pierce on December 31, {{year|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible, as well as the smallest Cordership in terms of population. | The '''2-engine Cordership''' is a diagonal [[:Category:Spaceships with speed c/12|c/12]] [[spaceship]] that was discovered by Aidan F. Pierce on December 31, {{year|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible, as well as the smallest Cordership in terms of population, and the smallest engineered spaceship. | ||
The 2-engine Cordership was voted the [[Pattern of the Year]] 2017 on [[ConwayLife.com]]. | The 2-engine Cordership was voted the [[Pattern of the Year]] 2017 on [[ConwayLife.com]]. |
Revision as of 12:36, 10 March 2018
2-engine Cordership | |||||||||
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Pattern type | Spaceship | ||||||||
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Family | Cordership | ||||||||
Number of cells | 100 | ||||||||
Bounding box | 41 × 48 | ||||||||
Direction | Diagonal | ||||||||
Period | 96 | ||||||||
Mod | 96 | ||||||||
Speed | c/12 | Unknown | ||||||||
Heat | 110.4 | ||||||||
Discovered by | Aidan F. Pierce | ||||||||
Year of discovery | 2017 | ||||||||
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The 2-engine Cordership is a diagonal c/12 spaceship that was discovered by Aidan F. Pierce on December 31, 2017.[1] It is the Cordership that uses the fewest number of switch engines known to be possible, as well as the smallest Cordership in terms of population, and the smallest engineered spaceship.
The 2-engine Cordership was voted the Pattern of the Year 2017 on ConwayLife.com.
Reactions
Dave Greene noted that the 2-engine Cordership, like its 3-engine counterpart, can be stopped by a single glider from behind without releasing any gliders or other spaceships.[2], and updated Martin Grant's Model D Heisenburp device for the 2-engine Cordership.[2]
Dave Greene, Blinkerspawn and Matthias Merzenich noted that the 2-engine Corership can be eaten by a constellation of two eaters and three blocks.[2]
gmc_nxtman pointed out that the 2-engine Cordership can reflect a glider 180 degrees, while preserving its mod-4 timing.[3]
Synthesis and seeds
Dave Greene found a 13-glider synthesis of the 2-engine Cordership on the day of its discovery,[4] which Luka Okanishi improved to 9 gliders.[5]
Two-glider seeds using as few as 9 still lifes and one-glider seeds using 15 still lifes are known.[6]
Uses
David Bell built a log(t) growth from four 2-engine Corderships[3], and a 4-engine Cordership rake from two adjacent 2-engine Corderships[7], both on January 3rd, 2018. 2718281828, Dave Greene and Chris Cain posted glider syntheses for this rake on January 7th, allowing for the construction of breeders.[8][9][10]
Bell further built two different period 96 c/12 forward rakes, one using the the 4-engine rake, along with the 2-engine Cordership and an older 3-engine block puffer,[11] the other using a new Cordership boat and block puffer, two 2-engine Corderships, and a sideways rake, both on January 6th, 2018.[11] He also built a different Cordership made from a two-engine boat puffer and a 2-engine Cordership that contains a glider which can escape if the boat is deleted by a sideways or forward glider.[11]
Chris Cain updated the infinite glider hotel to use the 2-engine Cordership on January 3rd, 2018.[12]
Entity Valkyrie built an 853×474 2-engine Cordership gun on January 6, 2018, using Luka Okanishi's 9-glider synthesis;[13] BlinkerSpawn noted that this gun could be compacted to 385×253 using the quadri-snark.[14] Dave Greene built an unrelated period-556 2-engine Cordership gun on January 7th, 2018.[15][16] Entity Valkyrie built a different gun using a transparent boat on January 10, 2018.[17]
Aidan F. Pierce combined the 2-engine Cordership with an additional switch engine to obtain various puffers.[18]
References
- ↑ Aidan F. Pierce (December 31, 2017). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ 2.0 2.1 2.2 Dave Greene (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ 3.0 3.1 gmc_nxtman (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Dave Greene (December 31, 2017). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Luka Okanishi (AbhpzTa) (December 31, 2017). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Dave Greene (January 1, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ David Bell (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ 2718281828 (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Dave Greene (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Chris Cain (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ 11.0 11.1 11.2 David Bell (January 6, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Chris Cain (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Entity Valkyrie (January 6, 2018). Guns Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ BlinkerSpawn (January 6, 2018). Re: Guns Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Dave Greene (January 7, 2018). Re: Guns Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Dave Greene (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Entity Valkyrie (January 10, 2018). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Aidan F. Pierce (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
External links
- Patterns
- Spaceships with between 100 and 109 cells
- Periodic objects with minimum population between 100 and 109
- Patterns with between 100 and 109 cells
- Patterns found by Aidan F. Pierce
- Patterns found in 2017
- Patterns that can be constructed with 9 gliders
- Outer-totalistically endemic patterns
- Spaceships
- Spaceships with period 96
- Diagonal spaceships
- Spaceships with speed c/12
- Spaceships with heat between 110 and 119
- Cordership variants
- Spaceships with mod 96