31P8H4V0

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31P8H4V0
b5o$bo4bo$bo$2bo4bo$4bo$5b2o2bo$3bo2bo3bo$bo7bo$o5bo2bo$o3b2o$4o2b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 16 TRACKLOOP 8 -1/2 0 THUMBSIZE 3 GPS 4 ]]
Pattern type Spaceship
Number of cells 31
Bounding box 11×11
Direction Orthogonal
Period 8
Mod 8
Speed c/2
Speed (unsimplified) 4c/8
Heat 42.5
Discovered by Jason Summers
Year of discovery 2002

31P8H4V0 is the smallest known period 8 c/2 orthogonal spaceship and a would-be block puffer made of a middleweight spaceship and another xWSS whose output is cancelled by its own spark. It was found by Jason Summers on October 29, 2002.[1] A partial glider synthesis for this spaceship was posted by Goldtiger997 on April 9, 2020, with the final step and most of the base still life construction completed.[2] The synthesis was completed with 189 gliders the next day.[3] Several minor improvements, reducing the synthesis to 182 gliders, were posted by Mark Niemiec on June 6.[4]

References

  1. Jason Summers' jslife pattern collection. Retrieved on March 17, 2020.
  2. Goldtiger997 (April 9, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  3. Goldtiger997 (April 10, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  4. Mark Niemiec (June 6, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums

External links

  • 31P8H4V0.1 at Heinrich Koenig's Game of Life Object Catalogs