Difference between revisions of "Spider"

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|isorulemin      = B3/S23-cy
 
|isorulemin      = B3/S23-cy
 
|isorulemax      = B34cekq5e6c8/S234ceq5-ciqr6acn7c8
 
|isorulemax      = B34cekq5e6c8/S234ceq5-ciqr6acn7c8
|synthesis        = 581
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|synthesis        = 569
 
|synthesisRLE    = true
 
|synthesisRLE    = true
 
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Revision as of 07:02, 18 May 2019

Spider
9bo7bo$3b2obobob2o3b2obobob2o$3obob3o9b3obob3o$o3bobo5bobo5bobo3bo$4b 2o6bobo6b2o$b2o9bobo9b2o$b2ob2o15b2ob2o$5bo15bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 5 TRACKLOOP 5 0 -1/5 THUMBSIZE 2 ]]
Pattern type Spaceship
Number of cells 58
Bounding box 27×8
Direction Orthogonal
Period 5
Mod 5
Speed c/5
Speed (unsimplified) c/5
Heat 53.6
Discovered by David Bell
Year of discovery 1997

Spider is an orthogonal c/5 spaceship that was discovered by David Bell in April 1997. 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.[1] Optimizations have since been found to reduce the glider count.[2]

See also

References

  1. Martin Grant (March 7, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  2. Dave Greene (March 14, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums

External links

  • 58P5H1V0.1 at Heinrich Koenig's Game of Life Object Catalogs