Difference between revisions of "Loafer"

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{{Spaceship
{{Spaceship
|name         = Loafer
|name             = Loafer
|pname       = loafer
|pname           = loafer
|c           = 20
|c               = 20
|bx           = 9
|bx               = 9
|by           = 9
|by               = 9
|dir         = Orthogonal
|dir             = Orthogonal
|p           = 7
|p               = 7
|s           = c/7
|m                = 7
|h           = 14.6
|s               = c/7
|discoverer   = Josh Ball
|z                = c/7
|discoveryear = 2013
|h               = 14.6
|rulemin     = B3/S23
|discoverer       = Josh Ball
|rulemax     = B378/S23678
|discoveryear     = 2013
|rulespecial = [[Conway's Game of Life|Conway Life]], [[DryLife]]
|rulemin         = B3/S23
|synthesis   = 8
|rulemax         = B378/S23678
|synthesisRLE = true
|rulespecial     = [[Conway's Game of Life|Conway Life]], {{rl|DryLife}}
|rle         = true
|isorulemin      = B3-k/S23
|animated     = true
|isorulemax      = B34ceq5acen6acn78/S234cejknwy5-ijnq678
|viewerconfig = #C [[ AUTOFIT TRACKLOOP 7 -1/7 0 THUMBSIZE 2 GPS 5 HEIGHT 480 WIDTH 480 ]]
|synthesis       = 8
|synthesisRLE     = true
|plaintext        = true
|rle             = true
|animated         = true
|viewerconfig     = #C [[ TRACKLOOP 7 -1/7 0 THUMBSIZE 3 ZOOM 27 GPS 5 HEIGHT 480 WIDTH 480 ]]
|apgcode          = xq7_3nw17862z6952
|pentadecathlonid = 20P7H1V0.1
}}
}}
'''Loafer''' is a [[c/7 orthogonal]] [[spaceship]] found by [[Josh Ball]] on February 17, [[:Category:Patterns found in 2013|2013]].  Its name refers to its slow speed and [[loaf]]-pushing behaviour.
'''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.


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 has not been seen to come out of soup.
It is the fifth smallest known spaceship in terms of cell count (after [[glider]], [[lightweight spaceship]], [[middleweight spaceship]] and [[heavyweight spaceship]]), being tied with five nontrivial [[standard spaceship flotilla]]e: [[LWSS on MWSS 1]], [[LWSS on HWSS 1]], [[LWSS on HWSS 2]], [[MWSS on MWSS 1]] and [[MWSS on MWSS 2]].


==Synthesis==
{{POTY|year=2013|rank=2|behind=the [[Snark]]}}


[[Adam P. Goucher]] found an 18-glider [[glider synthesis|synthesis]] for this spaceship on the day of its discovery, and [[Matthias Merzenich]] reduced this to 8 gliders the following day.<ref>{{Cite web|url=http://pentadecathlon.com/lifeNews/2013/03/c7_orthogonal_spaceship.html|title=c/7 Orthogonal Spaceship|author=Adam Goucher|date=March 10, 2013|accessdate=March 16, 2013}}</ref> Two loafer guns were built by Shannon Omick on February 19th of the same year, using these syntheses.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=1031#p7466|title=Re: c/7 orthogonal spaceships|author=Shannon Omick|date=February 18, 2013|accessdate=March 6, 2016}}</ref>
== Uses and reactions ==
On February 22, 2013, [[Paul Tooke]] built a [[sawtooth]] that uses loafer's ability to turn a [[middleweight spaceship]] into a [[loaf]].<ref name="post7488" />


==Uses and reactions==
On March 9, 2013, [[Mike Playle]] found a stable loafer-to-[[Herschel]] [[conduit]], apparently by means of [[Bellman|the same search program]] (or its earlier version) that gave the world the [[Snark]] a month and a half later.<ref name="post7532" />


[[Paul Tooke]] built a [[sawtooth]], that uses loafer's ability to turn a [[middleweight spaceship]] into a [[loaf]].<ref>{{Cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=7488#p7488|title=Re: c/7 orthogonal spaceships|author=Paul Tooke|date=February 22, 2013|accessdate=October 2, 2013}}</ref>
On June 11, 2016, [[Simon Ekström]] created a loafer-to-[[glider]] conduit, based on a loafer-to-[[pi-heptomino|pi]] found by praosylen.<ref name="post16961" /><ref name="post31873" />


[[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>{{Cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=7532#p7532|title=Re: c/7 orthogonal spaceships|author=Mike Playle|date=March 9, 2013|accessdate=October 22, 2014}}</ref>
[[Nico Brown]] noted that the loafer can be cleanly destroyed by an [[eater 1]] positioned at the loafer's foot.<ref name="post7476" />


On 11 June 2016, Simon Ekström created a loafer-to-[[glider]] conduit, based on a loafer-to-pi found by Aidan F. Pierce and rediscovered a year later by muzik.<ref>{{cite web|url=http://conwaylife.com/forums/viewtopic.php?p=16961#p16961|title=Re: The Hunting of the New Herschel Conduits|author=Aidan F. Pierce|date=18 February 2015|accessdate=4 July 2016}}</ref><ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=1827#p31873|title=Re: Thread For Requesting Help|author=simeks|date=11 June 2016|accessdate=12 June 2016}}</ref>
{{EmbedViewer
|pname        = loafereaterandtoh
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 12 WIDTH 720 HEIGHT 400 THEME Book AUTOSTART GPS 7 PAUSE 2 T 36 PAUSE 1 GPS 15 T 95 PAUSE 2 LOOP 96 ]]
|position    = center
|caption      = Left: a loafer eater found by Nico Brown. Right: a loafer-to-[[B-heptomino]] converter by Mike Playle, shown with [[BFx59H]] and [[ghost Herschel]].
|style        = width:300px;
}}
 
== Occurrence ==
{{related|List of common spaceships}}
Despite the loafer's remarkably small size, 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" /> and a third soup in August.<ref name="post102387" /> Nine loafer-producing soups (of which two are symmetric) have been found as of February 2024.<ref>{{citeCatagolue|page=object/xq7_3nw17862z6952/b3s23|title=Loafer|accessdate=February, 2024}}</ref>
 
[[Catagolue#Contributor engagement|Catagolue]] has a dedicated badge which will be given out to anyone who discovers one.


Loafer can be cleanly destroyed by an [[eater 1]] positioned at the loafer's foot.
== Construction ==
[[Adam P. Goucher]] found an 18-glider [[Glider synthesis|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 [[gun]]s were built by Shannon Omick on February 19th of the same year, using these syntheses.<ref name="post7466" />


==Gallery==
An [[one-glider seed]] for the loafer was constructed in February 2013,<ref name="post7478" /> followed by a smaller version in March 2015.<ref name="post17963" />
{|
{{gallery top}}
|-
{{gallery item|{{EmbedViewer
| [[File:Loafereater.png|frame|left|Loafer about to get eaten by an [[eater 1]].]]
|rle          = x = 41, y = 37, rule = B3/S23
|}
2bo$obo$b2o$32bo$30b2o8bo$31b2o5b2o$39b2o3$36bo$34b2o$15bo19b2o$14bo$
14b3o2$6bo$7bo$5b3o8$b2o$2b2o$bo7$34b2o$34bobo$34bo!
|viewerconfig = #C [[ THUMBSIZE 2 WIDTH 560 HEIGHT 540 THEME Book AUTOSTART GPS 24 ZOOM 10 T 0 PAUSE 2 T 102 PAUSE 1 LOOP 103 ]]
|position    = center
|caption      = A 8G synthesis for the loafer
|style        = width:300px;
}}}}
{{gallery item|{{EmbedViewer
|rle          = x = 46, y = 45, rule = B3/S23
13b2o17bobo$14bo17b2o$14bobo16bo$15b2o2$3bo$2bobo$bobo$b2o$14b2o$13bob
o$13b2o4$20b2o$19bobo$10bo9bo$9bobo4bo$10b2o3bobo$14bobo$14b2o2$45bo$
25b2o16b3o$20b2o3b2o15bo$19bo2bo19b2o$bo17bo2bo$obo17b2o$b2o4$21b2o$
21bobo4b2o$22bo5bobo$29b2o$33b2o$33b2o3$22b2o$21bo2bo$21bo2bo$22b2o!
|viewerconfig = #C [[ THUMBSIZE 2 WIDTH 560 HEIGHT 540 ZOOM 8 X 0 Y 4 THEME Book AUTOSTART GPS 32 T 0 PAUSE 2 T 299 PAUSE 1 LOOP 300 ]]
|position    = center
|caption      = An 1G seed for the loafer<ref name="post17963" />
|style        = width:300px;
}}}}
{{gallery bottom}}


==See also==
== In other rules ==
In {{rl|4diagonal}} (Life with the B4c transition added), there is a {{LinkCatagolue|xq7_26871017862|b34cs23|name=16-cell c/7 spaceship|style=raw}}, formed from two copies of half of the loafer's foot mutually supporting each other.<ref name="p38875" />
{{EmbedViewer
|rle          = x = 22, y = 9, rule = B34c/S23
20bo$19bobo$18bo2bo$19b2o$20bo$2bo5bo6bo$bobo3bobo4bobo3bo$2obo3bob2o
2b2obo3b2o$3b2ob2o8b2o2b2o!
|viewerconfig = #C [[ THUMBSIZE 2 ZOOM 32 WIDTH 805 HEIGHT 420 X 1/2 Y 7/4 AUTOSTART GPS 7 TRACK 0 -1/7 ]]
|position    = center
|caption      = The double-foot spaceship and loafer
|style        = width:300px;
}}


== See also ==
* [[Copperhead]]
* [[Copperhead]]
* [[Taco]]


==References==
== Notes ==
<references/>
<references group=note />
 
== References ==
<references>
<ref name="pentadecathlon201303">{{LinkGoLNews
|filename  = 2013/03/c7_orthogonal_spaceship.html
|title      = c/7 Orthogonal Spaceship
|author    = Adam P. Goucher
|date      = March 10, 2013
}}</ref>
<ref name="post7450">{{LinkForumThread
|format = ref
|p      = 7450
|title  = Re: c/7 orthogonal spaceships
|author = Josh Ball
|date  = February 17, 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="post7476">{{LinkForumThread
|format = ref
|p      = 7476
|title  = Re: c/7 orthogonal spaceships
|author = Nico Brown
|date  = February 20, 2013
}}</ref>
<ref name="post7478">{{LinkForumThread
|format    = ref
|p          = 7478
|title      = Re: c/7 orthogonal spaceships
|author    = Dave Greene
|date      = February 21, 2013
}}</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    = praosylen
|date      = 18 February 2015
|accessdate = 4 July 2016
}}</ref>
<ref name="post17963">{{LinkForumThread
|format    = ref
|p          = 17963
|title      = Re: Quadratic-Growth Geminoid Challenge
|author    = Dave Greene
|date      = Mar 14, 2015
}}</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="post58727">{{LinkForumThread
|format = ref
|p      = 58727
|title  = Re: I have constructed a lightspeed spaceship in B3/S23!
|author = Dave Greene
|date  = April 1, 2018
}}</ref>
<ref name="post93011">{{LinkForumThread
|format = ref
|p      = 93011
|title  = Re: Soup search results
|author = Billabob
|date  = April 1, 2020
}}</ref>
<ref name="post98270">{{LinkForumThread
|format = ref
|p      = 98270
|title  = Re: Soup search results
|author = Lewis Patterson
|date  = June 3, 2020
}}</ref>
<ref name="post102387">{{LinkForumThread
|format = ref
|p      = 102387
|title  = Re: Soup search results
|author = toroidalet
|date  = August 17, 2020
}}</ref>
<ref name="p38875">
{{LinkForumThread
|format = ref
|f      = 11
|t      = 2662
|p      = 38875
|title  = Loafer-like spaceship
|author = PHPBB12345
|date  = January 1, 2017
}}</ref>
</references>


== External links ==
== External links ==
{{LinkCatagolue|xq7_3nw17862z6952}}
* {{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 10:13, 20 March 2024

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 3 ZOOM 27 GPS 5 HEIGHT 480 WIDTH 480 ]]
View animated image
View static image
Pattern type Spaceship
Number of cells 20
Bounding box 9 × 9
Direction Orthogonal
Period 7
Mod 7
Speed c/7 | 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), being tied with five nontrivial standard spaceship flotillae: LWSS on MWSS 1, LWSS on HWSS 1, LWSS on HWSS 2, MWSS on MWSS 1 and MWSS on MWSS 2.

Loafer ranked second place in the Pattern of the Year 2013 competition in a belated vote held on the ConwayLife.com forums, behind the Snark.[2]

Uses and reactions

On February 22, 2013, Paul Tooke built a sawtooth that uses loafer's ability to turn a middleweight spaceship into a loaf.[3]

On March 9, 2013, 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.[4]

On June 11, 2016, Simon Ekström created a loafer-to-glider conduit, based on a loafer-to-pi found by praosylen.[5][6]

Nico Brown noted that the loafer can be cleanly destroyed by an eater 1 positioned at the loafer's foot.[7]

x = 51, y = 19, rule = B3/S23 18b2o$18bo9b2o$19bo2bo2bo3bo$16b4o2b4o2bo$16bo11b2o$19b4ob2o$19bo2bob 2o2$11bo$9b3o$bo6bo12bo9b2o15bo$obo5b2o10bobo8b2o15bo$o2bo16bo2bo24b3o $b2o18b2o27bo2$o5bo13bo5bo$bo3bobo13bo3bobo$2o3bo2bo11b2o3bo2bo$o3b2o 2bo11bo3b2o2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 WIDTH 720 HEIGHT 400 THEME Book AUTOSTART GPS 7 PAUSE 2 T 36 PAUSE 1 GPS 15 T 95 PAUSE 2 LOOP 96 ]]
Left: a loafer eater found by Nico Brown. Right: a loafer-to-B-heptomino converter by Mike Playle, shown with BFx59H and ghost Herschel.
(click above to open LifeViewer)
RLE: here Plaintext: here

Occurrence

See also: List of common spaceships

Despite the loafer's remarkably small size, it did not occur naturally until April 1, 2020,[8][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,[10] and a third soup in August.[11] Nine loafer-producing soups (of which two are symmetric) have been found as of February 2024.[12]

Catagolue has a dedicated badge which will be given out to anyone who discovers one.

Construction

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.[13] Two loafer guns were built by Shannon Omick on February 19th of the same year, using these syntheses.[14]

An one-glider seed for the loafer was constructed in February 2013,[15] followed by a smaller version in March 2015.[16]

x = 41, y = 37, rule = B3/S23 2bo$obo$b2o$32bo$30b2o8bo$31b2o5b2o$39b2o3$36bo$34b2o$15bo19b2o$14bo$ 14b3o2$6bo$7bo$5b3o8$b2o$2b2o$bo7$34b2o$34bobo$34bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 WIDTH 560 HEIGHT 540 THEME Book AUTOSTART GPS 24 ZOOM 10 T 0 PAUSE 2 T 102 PAUSE 1 LOOP 103 ]]
A 8G synthesis for the loafer
(click above to open LifeViewer)
x = 46, y = 45, rule = B3/S23 13b2o17bobo$14bo17b2o$14bobo16bo$15b2o2$3bo$2bobo$bobo$b2o$14b2o$13bob o$13b2o4$20b2o$19bobo$10bo9bo$9bobo4bo$10b2o3bobo$14bobo$14b2o2$45bo$ 25b2o16b3o$20b2o3b2o15bo$19bo2bo19b2o$bo17bo2bo$obo17b2o$b2o4$21b2o$ 21bobo4b2o$22bo5bobo$29b2o$33b2o$33b2o3$22b2o$21bo2bo$21bo2bo$22b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 WIDTH 560 HEIGHT 540 ZOOM 8 X 0 Y 4 THEME Book AUTOSTART GPS 32 T 0 PAUSE 2 T 299 PAUSE 1 LOOP 300 ]]
An 1G seed for the loafer[16]
(click above to open LifeViewer)


In other rules

In 4diagonal (Life with the B4c transition added), there is a 16-cell c/7 spaceship, formed from two copies of half of the loafer's foot mutually supporting each other.[17]

x = 22, y = 9, rule = B34c/S23 20bo$19bobo$18bo2bo$19b2o$20bo$2bo5bo6bo$bobo3bobo4bobo3bo$2obo3bob2o 2b2obo3b2o$3b2ob2o8b2o2b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 32 WIDTH 805 HEIGHT 420 X 1/2 Y 7/4 AUTOSTART GPS 7 TRACK 0 -1/7 ]]
The double-foot spaceship and loafer
(click above to open LifeViewer)

See also

Notes

  1. ↑ Coincidentally, this occurred exactly two years after Dave Greene posted a fake loafer-producing soup on April Fools' Day 2018.[9]

References

  1. ↑ Josh Ball (February 17, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  2. ↑ 77topaz (March 29, 2018). Re: Belated Pattern of the Year 2013 competition: Voting (discussion thread) at the ConwayLife.com forums
  3. ↑ Paul Tooke (February 22, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  4. ↑ Mike Playle (March 9, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  5. ↑ praosylen (18 February 2015). Re: The Hunting of the New Herschel Conduits (discussion thread) at the ConwayLife.com forums
  6. ↑ Simon Ekström (11 June 2016). Re: Thread For Requesting Help (discussion thread) at the ConwayLife.com forums
  7. ↑ Nico Brown (February 20, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  8. ↑ Billabob (April 1, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  9. ↑ Dave Greene (April 1, 2018). Re: I have constructed a lightspeed spaceship in B3/S23! (discussion thread) at the ConwayLife.com forums
  10. ↑ Lewis Patterson (June 3, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  11. ↑ toroidalet (August 17, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  12. ↑ Adam P. Goucher. "Loafer". Catagolue. Retrieved on February, 2024.
  13. ↑ c/7 Orthogonal Spaceship at Game of Life News. Posted by Adam P. Goucher on March 10, 2013.
  14. ↑ Shannon Omick (February 18, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  15. ↑ Dave Greene (February 21, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums
  16. ↑ 16.0 16.1 Dave Greene (Mar 14, 2015). Re: Quadratic-Growth Geminoid Challenge (discussion thread) at the ConwayLife.com forums
  17. ↑ PHPBB12345 (January 1, 2017). Loafer-like spaceship (discussion thread) at the ConwayLife.com forums

External links

Retrieved from "https://conwaylife.com/w/index.php?title=Loafer&oldid=147499"