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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]

Image gallery

Some tagalongs (in green) for 44P5H2V0 (first two found by Robert Wainwright, third found by David Bell)
Download RLE: click here

See also


  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

External links

  • 44P5H2V0.1 at Heinrich Koenig's Game of Life Object Catalogs