2-engine Cordership

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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 [[ THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH AUTOSTART ]] #C [[ TRACKLOOP 96 1/12 1/12 THUMBSIZE 2 GPS 60 HEIGHT 480 WIDTH 480 ]]
Pattern type Spaceship
Family Cordership
Number of cells 100
Bounding box 41×48
Direction Diagonal
Period 96
Mod 96
Speed c/12
Heat 110.4
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] Entity Valkyrie built a different gun using a transparent boat on January 10, 2018.[17]

Aidan F. Pierce combined the 2-engine Cordership with a switch engine to obtain various puffers.[18]

References

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

External links