Difference between revisions of "Loafer"

From LifeWiki
Jump to navigation Jump to search
(Undo revision 72689 by Freywa (talk): unexplained removal)
Tag: Undo
 
(56 intermediate revisions by 12 users not shown)
Line 1: Line 1:
{{Spaceship|name=Loafer|pname=loafer|dir=Orthogonal|p=20|s=c/7|c=9|bx=9|by=9|discoverer=Josh Ball|discoveryear=2013|life105=true|life106=true|plaintext=true|rle=true|animated=true|synthesis=8|synthesisRLE=true|rulemin=B3/S23}}
+
{{Spaceship
'''Loafer''' is a spaceship found by [[Josh Ball]] in [[:Category:Patterns found in 2013|2013]] . It is the slowest orthogonal spaceship, which (together with its loaf-pushing behaviour) led to it being named 'the loafer'. Adam P. Goucher discovered how to synthesise it with 18 gliders; this was further reduced to 8 by Matthias Merzenich. Shortly afterwards, a gun was engineered to repeatedly emit the spaceship.
+
|name             = Loafer
 +
|pname           = loafer
 +
|c                = 20
 +
|bx              = 9
 +
|by              = 9
 +
|dir             = Orthogonal
 +
|p               = 7
 +
|m                = 7
 +
|s               = c/7
 +
|z                = c/7
 +
|h                = 14.6
 +
|discoverer       = Josh Ball
 +
|discoveryear     = 2013
 +
|rulemin          = B3/S23
 +
|rulemax          = B378/S23678
 +
|rulespecial      = [[Conway's Game of Life|Conway Life]], [[DryLife]]
 +
|isorulemin      = B3-k/S23
 +
|isorulemax      = B34ceq5acen6acn78/S234cejknwy5-ijnq678
 +
|synthesis        = 8
 +
|synthesisRLE    = true
 +
|plaintext       = true
 +
|rle             = true
 +
|animated         = true
 +
|viewerconfig    = #C [[ TRACKLOOP 7 -1/7 0 THUMBSIZE 2 GPS 5 HEIGHT 480 WIDTH 480 ]]
 +
|apgcode          = xq7_3nw17862z6952
 +
|pentadecathlonid = 20P7H1V0.1
 +
}}
 +
'''Loafer''' (also '''the loafer''') is a [[c/7 orthogonal]] [[spaceship]] found by [[Josh Ball]] on February 17, {{year|2013}}.<ref name="post7450" />  Its name refers to its slow speed and [[loaf]]-pushing behaviour.
  
==External links==
+
It is the fifth smallest known spaceship in terms of cell count (after [[glider]], [[lightweight spaceship]], [[middleweight spaceship]] and [[heavyweight spaceship]]), excluding some nontrivial [[Spaceship flotilla|flotillae]]. Despite this, it did not occur naturally until April 1, {{year|2020}},<ref name="post93011" />{{refn|group=note|Coincidentally, this occurred exactly two years after [[Dave Greene]] posted a fake loafer-producing soup on April Fools' Day 2018.<ref name="post58727" />}} making it the first spaceship of a non-standard [[speed]] to occur in an [[asymmetric]] [[soup]]. A second soup was found by [[Rob Liston]] on June 2, 2020.<ref name="post98270" />
*[http://pentadecathlon.com/lifeNews/2013/03/c7_orthogonal_spaceship.html Loafer] at game or life news
+
 
 +
The loafer ranked second place in the [[Pattern of the Year]] 2013 competition in a belated vote held in 2018 on the [[ConwayLife.com]] forums, behind the [[Snark]].<ref name="post58573" />
 +
 
 +
==Synthesis==
 +
[[Adam P. Goucher]] found an 18-glider [[synthesis]] for this spaceship on the day of its discovery which [[Matthias Merzenich]] reduced to 8 gliders the following day.<ref name="pentadecathlon201303" /> Two loafer guns were built by Shannon Omick on February 19th of the same year, using these syntheses.<ref name="post7466" />
 +
 
 +
==Uses and reactions==
 +
[[Paul Tooke]] built a [[sawtooth]] that uses loafer's ability to turn a [[middleweight spaceship]] into a [[loaf]].<ref name="post7488" />
 +
 
 +
[[Mike Playle]] found a stable loafer-to-[[Herschel]] [[conduit]], apparently by means of the same search program (or its earlier version), that gave the world the [[Snark]] a month and a half later.<ref name="post7532" />
 +
 
 +
On 11 June 2016, Simon Ekström created a loafer-to-[[glider]] conduit, based on a loafer-to-[[pi-heptomino|pi]] found by Aidan F. Pierce.<ref name="post16961" /><ref name="post31873" />
 +
 
 +
The loafer can be cleanly destroyed by an [[eater 1]] positioned at the loafer's foot.
 +
 
 +
==Gallery==
 +
{|
 +
|-
 +
| [[File:Loafereater.png|frame|left|Loafer about to get eaten by an [[eater 1]].]]
 +
|}
 +
 
 +
==See also==
 +
* [[Copperhead]]
 +
 
 +
==Notes==
 +
<references group=note />
 +
 
 +
==References==
 +
<references>
 +
<ref name="post7450">{{LinkForumThread
 +
|format = ref
 +
|title  = Re: c/7 orthogonal spaceships
 +
|p      = 7450
 +
|author = Josh Ball
 +
|date  = February 17, 2013
 +
}}</ref>
 +
<ref name="post58573">{{LinkForumThread
 +
|format = ref
 +
|title  = Re: Belated Pattern of the Year 2013 competition: Voting
 +
|p      = 58573
 +
|author = 77topaz
 +
|date  = March 29, 2018
 +
}}</ref>
 +
<ref name="pentadecathlon201303">{{Cite web
 +
|url        = http://pentadecathlon.com/lifeNews/2013/03/c7_orthogonal_spaceship.html
 +
|title      = c/7 Orthogonal Spaceship
 +
|author    = Adam P. Goucher
 +
|date      = March 10, 2013
 +
|accessdate = March 16, 2013
 +
}}</ref>
 +
<ref name="post7466">{{LinkForumThread
 +
|format    = ref
 +
|f          = 2
 +
|t          = 1031
 +
|p          = 7466
 +
|title      = Re: c/7 orthogonal spaceships
 +
|author    = Shannon Omick
 +
|date      = February 18, 2013
 +
|accessdate = March 6, 2016
 +
}}</ref>
 +
<ref name="post7488">{{LinkForumThread
 +
|format    = ref
 +
|p          = 7488
 +
|title      = Re: c/7 orthogonal spaceships
 +
|author    = Paul Tooke
 +
|date      = February 22, 2013
 +
|accessdate = October 2, 2013
 +
}}</ref>
 +
<ref name="post7532">{{LinkForumThread
 +
|format    = ref
 +
|p          = 7532
 +
|title      = Re: c/7 orthogonal spaceships
 +
|author    = Mike Playle
 +
|date      = March 9, 2013
 +
|accessdate = October 22, 2014
 +
}}</ref>
 +
<ref name="post16961">{{LinkForumThread
 +
|format    = ref
 +
|p          = 16961
 +
|title      = Re: The Hunting of the New Herschel Conduits
 +
|author    = Aidan F. Pierce
 +
|date      = 18 February 2015
 +
|accessdate = 4 July 2016
 +
}}</ref>
 +
<ref name="post31873">{{LinkForumThread
 +
|format    = ref
 +
|f          = 2
 +
|t          = 1827
 +
|p          = 31873
 +
|title      = Re: Thread For Requesting Help
 +
|author    = Simon Ekström
 +
|date      = 11 June 2016
 +
|accessdate = 12 June 2016
 +
}}</ref>
 +
<ref name="post93011">{{LinkForumThread
 +
|format = ref
 +
|title  = Re: Soup search results
 +
|p      = 93011
 +
|author = Billabob
 +
|date  = April 1, 2020
 +
}}</ref>
 +
<ref name="post58727">{{LinkForumThread
 +
|format = ref
 +
|title  = Re: I have constructed a lightspeed spaceship in B3/S23!
 +
|p      = 58727
 +
|author = Dave Greene
 +
|date  = April 1, 2018
 +
}}</ref>
 +
<ref name="post98270">{{LinkForumThread
 +
|format = ref
 +
|title  = Re: Soup search results
 +
|p      = 98270
 +
|author = Lewis Patterson
 +
|date  = June 3, 2020
 +
}}</ref>
 +
</references>
 +
 
 +
== External links ==
 +
{{LinkLexicon|lex_l.htm#loafer}}
 +
{{LinkCatagolue|xq7_3nw17862z6952}}
 +
{{LinkPentadecathlonObject|20P7H1V0.1}}
 +
{{LinkNiemiec|ss.htm#ss-20|patternname=The 6 twenty-bit spaceships}}
 +
 
 +
{{natural}}

Latest revision as of 18:54, 28 June 2020

Loafer
x = 9, y = 9, rule = B3/S23 b2o2bob2o$o2bo2b2o$bobo$2bo$8bo$6b3o$5bo$6bo$7b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 7 -1/7 0 THUMBSIZE 2 GPS 5 HEIGHT 480 WIDTH 480 ]]
Pattern type Spaceship
Number of cells 20
Bounding box 9×9
Direction Orthogonal
Period 7
Mod 7
Speed c/7
Speed (unsimplified) c/7
Heat 14.6
Discovered by Josh Ball
Year of discovery 2013

Loafer (also the loafer) is a c/7 orthogonal spaceship found by Josh Ball on February 17, 2013.[1] Its name refers to its slow speed and loaf-pushing behaviour.

It is the fifth smallest known spaceship in terms of cell count (after glider, lightweight spaceship, middleweight spaceship and heavyweight spaceship), excluding some nontrivial flotillae. Despite this, it did not occur naturally until April 1, 2020,[2][note 1] making it the first spaceship of a non-standard speed to occur in an asymmetric soup. A second soup was found by Rob Liston on June 2, 2020.[4]

The loafer ranked second place in the Pattern of the Year 2013 competition in a belated vote held in 2018 on the ConwayLife.com forums, behind the Snark.[5]

Synthesis

Adam P. Goucher found an 18-glider synthesis for this spaceship on the day of its discovery which Matthias Merzenich reduced to 8 gliders the following day.[6] Two loafer guns were built by Shannon Omick on February 19th of the same year, using these syntheses.[7]

Uses and reactions

Paul Tooke built a sawtooth that uses loafer's ability to turn a middleweight spaceship into a loaf.[8]

Mike Playle found a stable loafer-to-Herschel conduit, apparently by means of the same search program (or its earlier version), that gave the world the Snark a month and a half later.[9]

On 11 June 2016, Simon Ekström created a loafer-to-glider conduit, based on a loafer-to-pi found by Aidan F. Pierce.[10][11]

The loafer can be cleanly destroyed by an eater 1 positioned at the loafer's foot.

Gallery

Loafer about to get eaten by an eater 1.

See also

Notes

  1. Coincidentally, this occurred exactly two years after Dave Greene posted a fake loafer-producing soup on April Fools' Day 2018.[3]

References

  1. Josh Ball (February 17, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  2. Billabob (April 1, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. Dave Greene (April 1, 2018). Re: I have constructed a lightspeed spaceship in B3/S23! (discussion thread) at the ConwayLife.com forums
  4. Lewis Patterson (June 3, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  5. 77topaz (March 29, 2018). Re: Belated Pattern of the Year 2013 competition: Voting (discussion thread) at the ConwayLife.com forums
  6. Adam P. Goucher (March 10, 2013). "c/7 Orthogonal Spaceship". Retrieved on March 16, 2013.
  7. Shannon Omick (February 18, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  8. Paul Tooke (February 22, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  9. Mike Playle (March 9, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  10. Aidan F. Pierce (18 February 2015). Re: The Hunting of the New Herschel Conduits (discussion thread) at the ConwayLife.com forums
  11. Simon Ekström (11 June 2016). Re: Thread For Requesting Help (discussion thread) at the ConwayLife.com forums

External links