2-engine Cordership: Difference between revisions

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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, [[:Category:Patterns found in 2017|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, [[:Category:Patterns found in 2017|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.


==Synthesis==
==Reactions==
Dave Greene noted that the 2-engine Cordership, like its [[3-engine Cordership|3-engine]] counterpart, can be stopped by a single [[glider]] from behind without releasing any [[glider]]s or other [[spaceship]]s.<ref name="post54470" />, and updated [[Extremeenthusiast]]'s [[Model D Heisenburp|Model D]] [[Heisenburp device]] for the 2-engine Cordership.<ref name="post54470" />
 
Dave Greene, [[Blinkerspawn]] and [[Matthias Merzenich]] noted that the 2-engine Corership can be eaten by a constellation of two [[eater 1|eater]]s and three [[block]]s.<ref name="post54470" />
 
[[gmc_nxtman]] pointed out that the 2-engine Cordership can reflect a glider 180 degrees, while preserving its mod-4 timing.<ref name="post54583" />
 
==Synthesis and seeds==
[[Dave Greene]] found a 13-glider synthesis of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[AbhpzTa]] improved to 9 gliders.<ref name="post54453" />
[[Dave Greene]] found a 13-glider synthesis of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[AbhpzTa]] improved to 9 gliders.<ref name="post54453" />
Two-glider [[seed]]s using as few as 9 still lifes and one-glider seeds using 15 still lifes are known.<ref name="post54492" />


==Uses==
==Uses==
[[David Bell]] built a 4-engine Cordership [[rake]] from two adjacent 2-engine Corderships on January 3rd, 2018.<ref name="post54628" />
[[David Bell]] built a [[log(t) growth]] from four 2-engine Corderships<ref name="post54583" />, and a 4-engine Cordership [[rake]] from two adjacent 2-engine Corderships<ref name="post54628" />, 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 [[breeder]]s.<ref name="post54798" /><ref name="post54801" /><ref name="post54808" />
 
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]],<ref name="post54784" /> the other using a new Cordership [[boat]] and [[block]] [[puffer]], two 2-engine Corderships, and a sideways rake, both on January 6th, 2018.<ref name="post54784" /> 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.<ref name="post54784" />
 
[[Chris Cain]] updated the [[infinite glider hotel]] to use the 2-engine Cordership on January 3rd, 2018.<ref name="post54590" />
 
[[Entity Valkyrie]] built an 853×474 2-engine Cordership gun on January 6, 2018, using [[AbhpzTa]]'s 9-glider synthesis;<ref name="post54750" /> [[BlinkerSpawn]] noted that this gun could be compacted to 385×253 using the [[quadri-snark]].<ref name="post54753" /> [[Dave Greene]] built an unrelated period-556 2-engine Cordership gun on January 7th, 2018.<ref name="post54814" /><ref name="post54815" />
 
[[Aidan F. Pierce]] combined the 2-engine Cordership with a [[switch engine]] to obtain various [[puffer]]s.<ref name="post54816" />


==References==
==References==
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|accessdate = January 4, 2018
|accessdate = January 4, 2018
|date      = December 31, 2017
|date      = December 31, 2017
}}</ref>
<ref name="post54470">{{LinkForumThread
|p          = 54470
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = Dave Greene
|accessdate = January 8, 2018
|date      = January 3, 2018
}}</ref>
<ref name="post54492">{{LinkForumThread
|p          = 54492
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = Dave Greene
|accessdate = January 8, 2018
|date      = January 1, 2018
}}</ref>
<ref name="post54583">{{LinkForumThread
|p          = 54583
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = gmc_nxtman
|accessdate = January 8, 2018
|date      = January 3, 2018
}}</ref>
<ref name="post54590">{{LinkForumThread
|p          = 54590
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = Chris Cain
|accessdate = January 8, 2018
|date      = January 3, 2018
}}</ref>
}}</ref>
<ref name="post54628">{{LinkForumThread
<ref name="post54628">{{LinkForumThread
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|accessdate = January 4, 2018
|accessdate = January 4, 2018
|date      = January 3, 2018
|date      = January 3, 2018
}}</ref>
<ref name="post54750">{{LinkForumThread
|p          = 54750
|format    = ref
|title      = Guns Discussion Thread
|author    = Entity Valkyrie
|accessdate = January 8, 2018
|date      = January 6, 2018
}}</ref>
<ref name="post54753">{{LinkForumThread
|p          = 54753
|format    = ref
|title      = Re: Guns Discussion Thread
|author    = BlinkerSpawn
|accessdate = January 8, 2018
|date      = January 6, 2018
}}</ref>
<ref name="post54784">{{LinkForumThread
|p          = 54784
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = David Bell
|accessdate = January 8, 2018
|date      = January 6, 2018
}}</ref>
<ref name="post54798">{{LinkForumThread
|p          = 54798
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = 2718281828
|accessdate = January 8, 2018
|date      = January 7, 2018
}}</ref>
<ref name="post54801">{{LinkForumThread
|p          = 54801
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = Dave Greene
|accessdate = January 8, 2018
|date      = January 7, 2018
}}</ref>
<ref name="post54808">{{LinkForumThread
|p          = 54808
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = Chris Cain
|accessdate = January 8, 2018
|date      = January 7, 2018
}}</ref>
<ref name="post54814">{{LinkForumThread
|p          = 54814
|format    = ref
|title      = Re: Guns Discussion Thread
|author    = Dave Greene
|accessdate = January 8, 2018
|date      = January 7, 2018
}}</ref>
<ref name="post54815">{{LinkForumThread
|p          = 54815
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = Dave Greene
|accessdate = January 8, 2018
|date      = January 7, 2018
}}</ref>
<ref name="post54816">{{LinkForumThread
|p          = 54816
|format    = ref
|title      = Re: Spaceship Discussion Thread
|author    = Aidan F. Pierce
|accessdate = January 8, 2018
|date      = January 7, 2018
}}</ref>
}}</ref>
</references>
</references>

Revision as of 14:03, 8 January 2018

2-engine Cordership
x = 41, y = 49, rule = B3/S23 19b2o$19b4o$19bob2o2$20bo$19b2o$19b3o$21bo$33b2o$33b2o7$36bo$35b2o$34b o3bo$35b2o2bo$40bo$37bobo$38bo$38bo$38b2o$38b2o3$13bo10bo$12b5o5bob2o 11bo$11bo10bo3bo9bo$12b2o8b3obo9b2o$13b2o9b2o12bo$2o13bo21b3o$2o35b3o 7$8b2o$8b2o11b2o$19b2o2bo$24bo3bo$18bo5bo3bo$19bo2b2o3bobo$20b3o5bo$ 28bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 96 1/12 1/12 THUMBSIZE 2 GPS 60 HEIGHT 480 WIDTH 480 ]]
View static image
Pattern type Spaceship
Family Cordership
Number of cells 100
Bounding box 41 × 48
Direction Diagonal
Period 96 (mod: 96)
Speed c/12 | Unknown
Heat 110.4
Kinetic symmetry Unspecified
Discovered by Aidan F. Pierce
Year of discovery 2017

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.

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 Extremeenthusiast'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 AbhpzTa 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 AbhpzTa'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]

Aidan F. Pierce combined the 2-engine Cordership with a switch engine to obtain various puffers.[17]

References

  1. ↑ Aidan F. Pierce (December 31, 2017). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  2. ↑ 2.0 2.1 2.2 Dave Greene (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  3. ↑ 3.0 3.1 gmc_nxtman (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  4. ↑ Dave Greene (December 31, 2017). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  5. ↑ AbhpzTa (December 31, 2017). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  6. ↑ Dave Greene (January 1, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  7. ↑ David Bell (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  8. ↑ 2718281828 (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  9. ↑ Dave Greene (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  10. ↑ Chris Cain (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  11. ↑ 11.0 11.1 11.2 David Bell (January 6, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  12. ↑ Chris Cain (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  13. ↑ Entity Valkyrie (January 6, 2018). Guns Discussion Thread (discussion thread) at the ConwayLife.com forums
  14. ↑ BlinkerSpawn (January 6, 2018). Re: Guns Discussion Thread (discussion thread) at the ConwayLife.com forums
  15. ↑ Dave Greene (January 7, 2018). Re: Guns Discussion Thread (discussion thread) at the ConwayLife.com forums
  16. ↑ Dave Greene (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  17. ↑ Aidan F. Pierce (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
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