60P5H2V0

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60P5H2V0
5bo7bo5b$3b2ob2o3b2ob2o3b$6b2o3b2o6b$8bobo8b$bo4bobobobo4bob$3o5bobo5b 3o$o5bobobobo5bo$2bo2bo2bobo2bo2bo2b$2b2o3b2ob2o3b2o2b$o7bobo7bo$o6b2o b2o6bo! #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 60
Bounding box 19×11
Direction Orthogonal
Period 5
Mod 5
Speed 2c/5
Speed (unsimplified) 2c/5
Heat 42.4
Discovered by Tim Coe
Year of discovery 1996

60P5H2V0 is an unnamed orthogonal period 5 2c/5 spaceship[1] that was found by Tim Coe in May 1996.[2]

Synthesis and destruction

60P5H2V0 is most well-known for being the first orthogonal spaceship that travels at a speed other than c/2 to be successfully constructed via glider synthesis (using 63 gliders). The glider synthesis was mostly due to Noam Elkies, with help from Mark Niemiec and Jason Summers, in March 2003.[2] Thanks to its glider synthesis, two guns have been independently constructed that create it: a period 416 gun and a period 690 gun. The synthesis has since been reduced significantly by Tanner Jacobi in December 2019[3] and Goldtiger997 in October 2020.[4][5]

It can easily be destroyed by two eater 2s as shown below.

A 60P5H2V0 about to be eaten by two eater 2s
RLE: here

A similar spaceship, 57P5H2V0, was synthesized in late 2020, primarily due to efforts by Goldtiger997.[6] The final step of this synthesis was previously completed on October 27,[7] while the base still life was completed on November 2.[8]

See also

References

  1. "Class 3 Objects Catalog". Retrieved on May 26, 2009.
  2. 2.0 2.1 Jason Summers' jslife pattern collection. Retrieved on May 26, 2009.
  3. Tanner Jacobi (December 28, 2019). Message in #cgol on the Conwaylife Lounge Discord server
  4. Goldtiger997 (October 24, 2020). Message in #cgol on the Conwaylife Lounge Discord server
  5. Goldtiger997 (October 24, 2020). Message in #cgol on the Conwaylife Lounge Discord server
  6. bubblegum (November 2, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  7. Goldtiger997 (October 27, 2020). Message in #cgol on the Conwaylife Lounge Discord server
  8. Goldtiger997 (November 2, 2020). Message in #cgol on the Conwaylife Lounge Discord server

External links

  • 60P5H2V0.1 at Heinrich Koenig's Game of Life Object Catalogs