44P5H2V0

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44P5H2V0
4bo5bo4b$3b3o3b3o3b$2bo2bo3bo2bo2b$b3o7b3ob$2bobo5bobo2b$4b2o3b2o4b$o 4bo3bo4bo$5bo3bo5b$2o3bo3bo3b2o$2bo2bo3bo2bo2b$4bo5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 5 TRACKLOOP 5 0 -2/5 THUMBSIZE 2 ]]
Pattern type Spaceship
Number of cells 44
Bounding box 15×10
Direction Orthogonal
Period 5
Mod 5
Speed 2c/5
Speed (unsimplified) 2c/5
Heat 47.2
Discovered by Dean Hickerson
Year of discovery 1991

44P5H2V0 is an unnamed 2c/5 orthogonal spaceship discovered by Dean Hickerson on July 23, 1991,[1] being the first 2c/5 spaceship to be found. Robert Wainwright and David Bell then found some small tagalongs that allowed the creation of arbitrarily large 2c/5 spaceships. These were the only known 2c/5 spaceships until the discovery of 70P5H2V0 by Hartmut Holzwart on December 5, 1992.[2]

Goldtiger997 found a 131-glider synthesis for 44P5H2V0 on August 29, 2020.[3] Tanner Jacobi improved the synthesis to 41 gliders the same day,[4] and iNoMed improved it to 39 in March 2021.[5] ENORMOUS_NAME and iNoMed constructed a 44P5H2V0 gun on October 30, 2020.[6]

It is currently the only period-5 spaceship to have occurred semi-naturally, having first appeared in a soup found using Charity Engine on April 2, 2022.[7] Using the recipe from this soup, a 24-glider synthesis was found by Goldtiger997 and iNoMed.[8]

Gallery

x = 66, y = 35, rule = B3/S23 6bobo19bobo23bobo$3bo4bo16bo4bo20bo4bo$2b3o4bo14b3o4bo18b3o4bo$bobo19b obo23bobo$2o2b2o4bo11b2o2b2o4bo15b2o2b2o4bo$b2o2b5o13b2o2b5o17b2o2b5o 4$b2o2b5o13b2o2b5o17b2o2b5o$2o2b2o4bo11b2o2b2o4bo15b2o2b2o4bo$bobo19bo bo23bobo$2b3o4bo14b3o4bo18b3o4bo$3bo4bo16bo4bo20bo4bo$6bobo19bobo23bob o$11bo21bo25bo4b2o$11bobo19bobo23bobo2b2o$10bo2bo18bo2bo2b3o17bo2bo$ 11bobo19bobo2b2o19bobo2b2o$11bo21bo25bo4b2o$6bobo19bobo23bobo$3bo4bo 16bo4bo20bo4bo$2b3o4bo14b3o4bo18b3o4bo$bobo19bobo23bobo$2o2b2o4bo11b2o 2b2o4bo15b2o2b2o4bo$b2o2b5o13b2o2b5o17b2o2b5o4$b2o2b5o13b2o2b5o17b2o2b 5o$2o2b2o4bo11b2o2b2o4bo15b2o2b2o4bo$bobo19bobo23bobo$2b3o4bo14b3o4bo 18b3o4bo$3bo4bo16bo4bo20bo4bo$6bobo19bobo23bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 5 TRACKLOOP 5 -2/5 0 THUMBSIZE 2 AUTOSTART ZOOM 8 HEIGHT 400 WIDTH 650 ]]
Some tagalongs for 44P5H2V0 (first two found
by Robert Wainwright, third found by David Bell)
(click above to open LifeViewer)
RLE: here Plaintext: here
Tagalongs shown in green

See also

References

  1. David Bell's article, "Spaceships in Conway's Life (Part 6)"
  2. David Bell's article, "Spaceships in Conway's Life (Addendum 1)"
  3. Goldtiger997 (August 29, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  4. Tanner Jacobi (August 29, 2020). Message in #cgol on the Conwaylife Lounge Discord server
  5. iNoMed (March 28, 2021). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  6. ENORMOUS_NAME (October 30, 2020). Re: Gun Discussion Thread (discussion thread) at the ConwayLife.com forums
  7. David Raucci (April 2, 2022). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  8. iNoMed (April 2, 2022). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums

External links