Difference between revisions of "Pufferfish"

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{{Puffer|p=12|s=c/2|bx=15|by=12|dir=Orthogonal|name=Pufferfish|pname=pufferfish|c=44|discoverer=Richard Schank|discoveryear=2014|rle=true|synthesis=15|synthesisRLE=true}}
{{Puffer
'''Pufferfish''' is a [[puffer]] discovered by Richard Schank in [[:Category:Patterns found in 2014|2014]]. Being found in a symmetric [[soup]], the puffer is ''almost'' natural.<ref>{{Cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=14510#p14510|title=Re: Soup search results|author=Richard Schank|date=November 24, 2014|accessdate=November 25, 2014}}</ref> It consists of a pair of [[b-heptomino]]s whose debris is stabilised by a backend.
|name        = Pufferfish
|pname        = pufferfish
|c           = 44
|bx           = 15
|by           = 12
|dir         = Orthogonal
|p            = 12
|s            = c/2
|discoverer   = Richard Schank
|discoveryear = 2014
|rulemin      = B3/S23
|rulemax      = B38/S2378
|rulespecial  = [[Conway's Game of Life|Conway's Life]]
|isorulemin  = B3-k/S23
|isorulemax  = B34e5ce6ac7e8/S234cei5ekn6-ac78
|synthesis   = 15
|synthesisRLE = true
|plaintext    = true
|rle          = true
|apgcode      = yl12_1_8_c7310da81295b6611e6e4e34a80a5523
|animated    = true
|viewerconfig = #C [[ ZOOM 20 AUTOSTART OFF ]]
}}
'''Pufferfish''' is a [[puffer]] discovered by Richard Schank in {{year|2014}}. Having been found in a symmetric [[soup]], the puffer is ''almost'' natural.<ref>{{Cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=14510#p14510|title=Re: Soup search results|author=Richard Schank|date=November 24, 2014|accessdate=November 25, 2014}}</ref> It consists of a pair of [[b-heptomino]]s whose debris is stabilised by a backend.


It is the first known [[c/2]] object that doesn't have any parts of periods 2 or 4.
It is the first known [[c/2]] object that doesn't have any parts of periods 2 or 4.


On December 27, 2014 Ivan Fomichev found a non-trivial (dependent) c/2 [[fuse]] of period 36 for pufferfish's exhaust, that enabled him to assemble the first c/2 [[spaceship]] and the first c/2 [[rake]], that had no parts of periods 2 or 4.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=15269|title=Pufferfish and companions|author=Ivan Fomichev|date=December 27, 2014|accessdate=December 28, 2014}}</ref> A few days later 'glider_rider' found some smaller rakes.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=15359#p15359|title=Re: Pufferfish and companions|author=glider_rider|date=December 29, 2014|accessdate=December 29, 2014}}</ref>
== Period-36 technology ==
 
{{Main|Pufferfish spaceship}}
 
On December 27, 2014 Ivan Fomichev found a non-trivial (dependent) c/2 [[fuse]] of period 36 for pufferfish's exhaust, enabling him to assemble the first wholly high-period c/2 [[spaceship]] and [[rake]].<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=15269|title=Pufferfish and companions|author=Ivan Fomichev|date=December 27, 2014|accessdate=December 28, 2014}}</ref> A few days later [[Nico Brown]] found some smaller rakes.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=15359#p15359|title=Re: Pufferfish and companions|author=Nico Brown|date=December 29, 2014|accessdate=December 29, 2014}}</ref>


{|
{|
Line 12: Line 39:
|[[Image:Pufferfishrake.png‎|framed|left|Pufferfish-based p36 rake<br />{{JavaRLE|pufferfishrake}}]]
|[[Image:Pufferfishrake.png‎|framed|left|Pufferfish-based p36 rake<br />{{JavaRLE|pufferfishrake}}]]
|}
|}
== Synthesis ==
The second pufferfish-producing soup Richard Schank found resulted in a 15-glider synthesis proposed by Chris Cain.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=14595#p14595|title=Re: Soup search results|author=Chris Cain|date=November 27, 2014|accessdate=February 2, 2015}}</ref> On January 8, 2015 Ivan Fomichev made a p160 pufferfish breeder.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=15857#p15857|title=Re: Pufferfish and companions|author=Ivan Fomichev|date=January 8, 2015|accessdate=February 2, 2015}}</ref>
[[Image:Pufferfishbreeder.png|thumb|left|Pufferfish breeder<br />{{JavaRLE|pufferfishbreeder}}]]<br clear="all" />
Chris Cain found a 60-glider synthesis of a pufferfish-based spaceship in February 2015.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=1557&start=50#p16736|title=Re: Small Spaceship Syntheses|author=Chris Cain|date=February 10, 2015|accessdate=June 15, 2015}}</ref>  Versions with arbitrarily increased length and population are trivially constructible at the same total cost in gliders.
[[Image:Pufferfishspaceship_synth.png|thumb|left|Pufferfish spaceship synthesis<br />{{JavaRLE|pufferfishspaceship_synth}}]]<br clear="all" />


== References ==
== References ==
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<references/>
<references/>


[[Category:Fuses]][[Category:Spaceships]][[Category:Rakes]]
== External links ==
{{LinkLexicon|lex_p.htm#pufferfish}}
{{LinkCatagolue|yl12_1_8_c7310da81295b6611e6e4e34a80a5523|format=linear growth}}
 
{{Symmetry|orthogonal2}}
{{seminatural}}

Revision as of 05:19, 30 December 2019

Pufferfish
x = 15, y = 12, rule = B3/S23 3bo7bo$2b3o5b3o$b2o2bo3bo2b2o$3b3o3b3o2$4bo5bo$2bo2bo3bo2bo$o5bobo5bo$ 2o4bobo4b2o$6bobo$3bobo3bobo$4bo5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 20 AUTOSTART OFF ]]
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Pattern type Puffer
Number of cells 44
Bounding box 15 × 12
Direction Orthogonal
Period 12
Speed c/2
Discovered by Richard Schank
Year of discovery 2014

Pufferfish is a puffer discovered by Richard Schank in 2014. Having been found in a symmetric soup, the puffer is almost natural.[1] It consists of a pair of b-heptominos whose debris is stabilised by a backend.

It is the first known c/2 object that doesn't have any parts of periods 2 or 4.

Period-36 technology

Main article: Pufferfish spaceship

On December 27, 2014 Ivan Fomichev found a non-trivial (dependent) c/2 fuse of period 36 for pufferfish's exhaust, enabling him to assemble the first wholly high-period c/2 spaceship and rake.[2] A few days later Nico Brown found some smaller rakes.[3]

Pufferfish with a companion (p36 puffer)
Download RLE: click here
Pufferfish-based p36 spaceship
Download RLE: click here
Pufferfish-based p36 rake
Download RLE: click here

Synthesis

The second pufferfish-producing soup Richard Schank found resulted in a 15-glider synthesis proposed by Chris Cain.[4] On January 8, 2015 Ivan Fomichev made a p160 pufferfish breeder.[5]

Pufferfish breeder
Download RLE: click here


Chris Cain found a 60-glider synthesis of a pufferfish-based spaceship in February 2015.[6] Versions with arbitrarily increased length and population are trivially constructible at the same total cost in gliders.

Pufferfish spaceship synthesis
Download RLE: click here


References

  1. ↑ Richard Schank (November 24, 2014). "Re: Soup search results". Retrieved on November 25, 2014.
  2. ↑ Ivan Fomichev (December 27, 2014). "Pufferfish and companions". Retrieved on December 28, 2014.
  3. ↑ Nico Brown (December 29, 2014). "Re: Pufferfish and companions". Retrieved on December 29, 2014.
  4. ↑ Chris Cain (November 27, 2014). "Re: Soup search results". Retrieved on February 2, 2015.
  5. ↑ Ivan Fomichev (January 8, 2015). "Re: Pufferfish and companions". Retrieved on February 2, 2015.
  6. ↑ Chris Cain (February 10, 2015). "Re: Small Spaceship Syntheses". Retrieved on June 15, 2015.

External links

Retrieved from "https://conwaylife.com/w/index.php?title=Pufferfish&oldid=67549"