Pufferfish: Difference between revisions

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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>
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>
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|[[Image:Pufferfishcompanion.png‎|framed|left|Pufferfish with a companion<br />{{JavaRLE|pufferfishcompanion}}]]
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== References ==
== References ==


<references/>
<references/>

Revision as of 21:35, 28 December 2014

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 ]]
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. Being 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.

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.[2]

Pufferfish with a companion
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.