Spider

From LifeWiki
Jump to navigation Jump to search
Spider
9bo7bo$3b2obobob2o3b2obobob2o$3obob3o9b3obob3o$o3bobo5bobo5bobo3bo$4b 2o6bobo6b2o$b2o9bobo9b2o$b2ob2o15b2ob2o$5bo15bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 360 WIDTH 600 THUMBSIZE 2 ZOOM 16 GPS 5 TRACKLOOP 5 0 -1/5 ]]
Pattern type Spaceship
Number of cells 58
Bounding box 27 × 8
Direction Orthogonal
Period 5
Mod 5
Speed c/5 | c/5
Heat 53.6
Discovered by David Bell
Year of discovery 1997

Spider is a c/5 orthogonal spaceship that was discovered by David Bell on April 14, 1997.[1] It is the smallest known c/5 orthogonal spaceship. Its side sparks have proven to be very useful in constructing puffers and rakes.

On March 7, 2019, Martin Grant found a 601-glider synthesis of spider, making it the first c/5 orthogonal spaceship to be synthesized.[2] Optimizations have since been found to reduce the glider count.[3][4][5][6][7][8][9][10][11]

A 15426 × 15954 p11040 spider gun was constructed by Entity Valkyrie on January 26, 2020,[12] and a 10083 × 9478 glider-to-spider converter with a minimum repeat time of 2619 generations was constructed by Goldtiger997 on March 12.[13] The spider synthesis ranked second place in the Pattern of the Year 2019 competition on the ConwayLife.com forums, behind David Hilbert.[14]

See also

References

  1. David Bell's c/5 spaceship at Paul Callahan's Page of Conway's Life Miscellany
  2. Martin Grant (March 7, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  3. Jeremy Tan (May 18, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  4. Goldtiger997 (December 9, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  5. Tanner Jacobi (January 22, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  6. Tanner Jacobi (March 24, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  7. shinjuku (#4119362975) (April 15, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  8. shinjuku (#4119623321) (April 15, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  9. shinjuku (#4143876854) (April 19, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  10. shinjuku (#4431914116) (June 7, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  11. shinjuku (#4436166329) (June 8, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  12. Entity Valkyrie (January 26, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  13. Goldtiger997 (March 12, 2020). Re: Stable signal converters (discussion thread) at the ConwayLife.com forums
  14. Dave Greene (March 16, 2020). Re: POTY 2019 Voting (discussion thread) at the ConwayLife.com forums

External links