Difference between revisions of "Spider"

From LifeWiki
Jump to navigation Jump to search
m (Synth cost down from 488 to 382 with Goldtiger997's improved last step)
m (if the gun's period is noted, so too should be the converter's repeat time (also note the respective bounding boxes))
 
(34 intermediate revisions by 5 users not shown)
Line 18: Line 18:
|isorulemin      = B3/S23-cy
|isorulemin      = B3/S23-cy
|isorulemax      = B34cekq5e6c8/S234ceq5-ciqr6acn7c8
|isorulemax      = B34cekq5e6c8/S234ceq5-ciqr6acn7c8
|synthesis        = 382
|synthesis        = 205
|synthesisRLE    = true
|synthesisRLE    = true
|plaintext        = true
|plaintext        = true
|rle              = true
|rle              = true
|animated        = true
|animated        = true
|viewerconfig    = #C [[ GPS 5 TRACKLOOP 5 0 -1/5 THUMBSIZE 2 ]]
|viewerconfig    = #C [[ HEIGHT 360 WIDTH 600 THUMBSIZE 2 ZOOM 16 GPS 5 TRACKLOOP 5 0 -1/5 ]]
|apgcode          = xq5_ug1hmgc865da808ad568cgmh1guz124w6yb6w421
|apgcode          = xq5_ug1hmgc865da808ad568cgmh1guz124w6yb6w421
|pentadecathlonid = 58P5H1V0.1
|pentadecathlonid = 58P5H1V0.1
|eppsteinid      = 18216
|eppsteinid      = 18216
}}
}}
'''Spider''' is an orthogonal [[c/5 orthogonal|c/5]] [[spaceship]] that was discovered by [[:Category:Patterns found by David Bell|David Bell]] in April [[:Category:Patterns found in 1997|1997]]. It is the smallest known c/5 orthogonal spaceship. Its side [[spark]]s have proven to be very useful in constructing [[puffer]]s and [[rake]]s.
'''Spider''' is a [[c/5 orthogonal]] [[spaceship]] that was discovered by [[David Bell]] on April 14, {{year|1997}}.<ref>{{LinkCallahan|patterns/newc5/newc5.html|patternname=David Bell's c/5 spaceship}}</ref> It is the smallest known c/5 orthogonal spaceship. Its side [[spark]]s have proven to be very useful in constructing [[puffer]]s and [[rake]]s.


On March 7, {{year|2019}}, [[Martin Grant]] found a 601-glider [[glider synthesis|synthesis]] of spider, making it the first c/5 orthogonal spaceship to be synthesized.<ref name="post72705" />  Optimizations have since been found to reduce the glider count.<ref name="post76321" />
On March 7, {{year|2019}}, [[Martin Grant]] found a 601-glider [[synthesis]] of spider, making it the first c/5 orthogonal spaceship to be synthesized.<ref name="post72705" />  Optimizations have since been found to reduce the glider count.<ref name="post76321" /><ref name="post86121" /><ref name="post87949" /><ref name="post92253" /><ref name="j4119362975" /><ref name="j4119623321" /><ref name="j4143876854" /><ref name="j4431914116" /><ref name="j4436166329" />
 
A {{times|15426|15954}} p11040 spider [[gun]] was constructed by [[Entity Valkyrie]] on January 26, {{year|2020}},<ref name="post88186" /> and a {{times|10083|9478}} glider-to-spider [[converter]] with a minimum repeat time of 2619 generations was constructed by [[Goldtiger997]] on March 12.<ref name="post91054" />
{{POTY|name=The spider synthesis|year=2019|rank=2|behind=[[David Hilbert]]}}


==See also==
==See also==
*[[Pre-pulsar spaceship]]
* [[Pre-pulsar spaceship]]
*[[Snail]]
* [[Snail]]


==References==
==References==
<references>
<references>
<ref name="j4119362975">{{CiteCatagolueJob|job=4119362975|date=April 15, 2023}}</ref>
<ref name="j4119623321">{{CiteCatagolueJob|job=4119623321|date=April 15, 2023}}</ref>
<ref name="j4143876854">{{CiteCatagolueJob|job=4143876854|date=April 19, 2023}}</ref>
<ref name="j4431914116">{{CiteCatagolueJob|job=4431914116|date=June 7, 2023}}</ref>
<ref name="j4436166329">{{CiteCatagolueJob|job=4436166329|date=June 8, 2023}}</ref>
<ref name="post72705">{{LinkForumThread
<ref name="post72705">{{LinkForumThread
|format = ref
|format = ref
|p      = 72705
|title  = Re: Small Spaceship Syntheses
|title  = Re: Small Spaceship Syntheses
|p      = 72705
|author = Martin Grant
|author = Martin Grant
|date  = March 7, 2019
|date  = March 7, 2019
Line 47: Line 55:
<ref name="post76321">{{LinkForumThread
<ref name="post76321">{{LinkForumThread
|format = ref
|format = ref
|p      = 76321
|title  = Re: Small Spaceship Syntheses
|title  = Re: Small Spaceship Syntheses
|p      = 76321
|author = Jeremy Tan
|author = Jeremy Tan
|date  = May 18, 2019
|date  = May 18, 2019
}}</ref>
<ref name="post86121">{{LinkForumThread
|format = ref
|p      = 86121
|title  = Re: Small Spaceship Syntheses
|author = Goldtiger997
|date  = December 9, 2019
}}</ref>
<ref name="post87949">{{LinkForumThread
|format = ref
|p      = 87949
|title  = Re: Small Spaceship Syntheses
|author = Tanner Jacobi
|date  = January 22, 2020
}}</ref>
<ref name="post88186">{{LinkForumThread
|format = ref
|p      = 88186
|title  = Re: Small Spaceship Syntheses
|author = Entity Valkyrie
|date  = January 26, 2020
}}</ref>
<ref name="post91054">{{LinkForumThread
|format = ref
|p      = 91054
|title  = Re: Stable signal converters
|author = Goldtiger997
|date  = March 12, 2020
}}</ref>
<ref name="post92253">{{LinkForumThread
|format = ref
|p      = 92253
|title  = Re: Small Spaceship Syntheses
|author = Tanner Jacobi
|date  = March 24, 2020
}}</ref>
}}</ref>
</references>
</references>


==External links==
==External links==
{{LinkLexicon|lex_s.htm#spider}}
* {{LinkLexicon|lex_s.htm#spider}}
{{LinkEppstein|18216|patternname=The Spider (glider 18216)}}
<!-- * {{LinkEppstein|18216|patternname=The Spider (glider 18216)}} The Spider (glider 18216) at David Eppstein's Glider Database http://fano.ics.uci.edu/ca/gliders/g18216.html -->
{{LinkCatagolue|xq5_ug1hmgc865da808ad568cgmh1guz124w6yb6w421}}
* {{LinkEppsteinRule|rule=b3s23|rulename=Life (B3/S23)|archivedate=20160309235206}} <!-- The Spider (glider 18216), size 27x8, speed c/5, orthogonal -->
{{LinkPentadecathlonObject|58P5H1V0.1}}
* {{LinkCatagolue|xq5_ug1hmgc865da808ad568cgmh1guz124w6yb6w421}}
* {{LinkPentadecathlonObject|id=58P5H1V0.1|archivedate=20210716111048}}


{{Symmetry|orthogonal2}}
{{Symmetry|orthogonal2}}

Latest revision as of 21:11, 20 October 2023

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