Difference between revisions of "Overweight spaceship"

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{{Pattern|name=Overweight Spaceship|pname=owss|bx=8|by=5|c=15|discoverer=John Conway|discoveryear=1970|life105=true|life106=true|plaintext=true|rle=true}}
{{Pattern
An '''overweight spaceship''' (or '''OWSS''' for short) is a would-be [[spaceship]] similar to the [[lightweight spaceship]], [[middleweight spaceship]] and [[heavyweight spaceship]], but longer. On its own an overweight spaceship is unstable because the three [[cell]]s at its top do not die off like the corresponding [[spark]]s at the top of the smaller spaceships. Nonetheless, it can be escorted by true spaceships to form a [[Types_of_spaceships#Flotilla|flotilla]].
|name         = Overweight spaceship
|pname       = owss
|c            = 15
|bx           = 8
|by           = 5
|discoverer   = John Conway
|discoveryear = 1970
|rulemin      = B3/S23
|rulemax      = B368/S23
|rulespecial  = [[Conway's Game of Life|Conway Life]]
|isorulemin  = B3aij/S2eik3aijnr
|isorulemax  = B2n34-in5-ar67e8/S1e234-aw5-ijy6-kn7e
|plaintext   = true
|rle         = true
|synthesis    = 13
|synthesisRLE = true
}}
An '''overweight spaceship''' (or '''OWSS''' for short) is a would-be [[spaceship]] similar to the [[lightweight spaceship]], [[middleweight spaceship]] and [[heavyweight spaceship]], but longer. On its own an overweight spaceship is unstable. While the latter two [[xWSS]]es produce [[belly spark]]s that would die off, an overweight spaceship produces an [[egg]] that does not vanish but interferes with the body.


For OWSS with top spark over 4, minimal escort size difference is 4 - as shown http://paste.ubuntu.com/879925 (no screens/RLE for now - for tech reasons)
Nonetheless, an overweight spaceship can be escorted by true spaceships to form a [[flotilla]]. For an OWSS with top "spark" length over 4, minimal escort size difference is 4, as shown on the left. It is also possible to stabilize the OWSS with more OWSSes, which then have to be stabilized by more xWSSes.
==Glider synthesis==
Many lengths of overweight spaceship can be constructed by means of [[glider synthesis]].<ref name="post77160" />  Recent syntheses are collected in the <tt>xq4</tt> synthesis listed in [[Catagolue]]<ref>{{cite web|url=https://catagolue.hatsya.com/census/b3s23/synthesis-costs/xq4|title=xq4 census|work=Catagolue|accessdate=October 28, 2019}}</ref>; a number of older recipes can be found in [[Mark Niemiec]]'s synthesis database.<ref>{{cite web|url=https://conwaylife.com/ref/mniemiec/flotilla.htm#ss-owss|title=Overweight spaceship flotillae|work=Mark Niemiec's database|author=Mark Niemiec|accessdate=October 28, 2019}}</ref>
 
==In other rules==
The [[non-totalistic rule]] FattyLife (B3-n4nt5qr6i/S23) is specifically tailored to support the overweight spaceship with spark length 3, making it [https://catagolue.hatsya.com/object/xq8_27deeee6/b3-n4nt5qr6is23 a p8 spaceship.]
 
==Gallery==
{|
|[[Image:overweight_with_escort.png|left|x125px|thumb|Overweight Spaceship with escort]]
|[[Image:OWSS-F3.png|left|thumb|Overweight spaceship supported by more overweight spaceships.]]
|}
 
==References==
<references>
<ref name="post77160">{{LinkForumThread
|format = ref
|title  = Re: Small Spaceship Syntheses
|p      = 77160
|author = Martin Grant
|date  = June 5, 2019
}}</ref>
</references>


==External links==
==External links==
*[http://www.argentum.freeserve.co.uk/lex_o.htm#owss Overweight spaceship] at the Life Lexicon
{{LinkLexicon|lex_o.htm#owss}}
 
[[Category:XWSS variants]]
__NOTOC__

Revision as of 18:27, 11 December 2020

Overweight spaceship
Overweight spaceship image
View static image
Pattern type Miscellaneous
Number of cells 15
Bounding box 8 × 5
Discovered by John Conway
Year of discovery 1970

An overweight spaceship (or OWSS for short) is a would-be spaceship similar to the lightweight spaceship, middleweight spaceship and heavyweight spaceship, but longer. On its own an overweight spaceship is unstable. While the latter two xWSSes produce belly sparks that would die off, an overweight spaceship produces an egg that does not vanish but interferes with the body.

Nonetheless, an overweight spaceship can be escorted by true spaceships to form a flotilla. For an OWSS with top "spark" length over 4, minimal escort size difference is 4, as shown on the left. It is also possible to stabilize the OWSS with more OWSSes, which then have to be stabilized by more xWSSes.

Glider synthesis

Many lengths of overweight spaceship can be constructed by means of glider synthesis.[1] Recent syntheses are collected in the xq4 synthesis listed in Catagolue[2]; a number of older recipes can be found in Mark Niemiec's synthesis database.[3]

In other rules

The non-totalistic rule FattyLife (B3-n4nt5qr6i/S23) is specifically tailored to support the overweight spaceship with spark length 3, making it a p8 spaceship.

Gallery

Overweight Spaceship with escort
Overweight spaceship supported by more overweight spaceships.

References

  1. ↑ Martin Grant (June 5, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  2. ↑ "xq4 census". Catagolue. Retrieved on October 28, 2019.
  3. ↑ Mark Niemiec. "Overweight spaceship flotillae". Mark Niemiec's database. Retrieved on October 28, 2019.

External links

Retrieved from "https://conwaylife.com/w/index.php?title=Overweight_spaceship&oldid=75709"