Pufferfish: Difference between revisions
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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|animated=true|rulemin=B3/S23|rulemax=B38/S2378|rulespecial=[[Conway's Game of Life|Conway's Life]]|rle=true|synthesis=15|synthesisRLE=true}} | {{Puffer|p=12|s=c/2|bx=15|by=12|dir=Orthogonal|name=Pufferfish|pname=pufferfish|c=44|discoverer=Richard Schank|discoveryear=2014|animated=true|rulemin=B3/S23|rulemax=B38/S2378|rulespecial=[[Conway's Game of Life|Conway's Life]]|rle=true|synthesis=15|synthesisRLE=true}} | ||
'''Pufferfish''' is a [[puffer]] discovered by Richard Schank in [[:Category:Patterns found in 2014|2014]]. | '''Pufferfish''' is a [[puffer]] discovered by Richard Schank in [[:Category:Patterns found in 2014|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. | ||
Revision as of 23:43, 13 June 2016
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| Pattern type | Puffer | ||||||
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| Number of cells | 44 | ||||||
| Bounding box | 15 × 12 | ||||||
| Direction | Orthogonal | ||||||
| Period | 12 | ||||||
| Speed | c/2 | ||||||
| Discovered by | Richard Schank | ||||||
| Year of discovery | 2014 | ||||||
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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.
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 wholly high-period c/2 spaceship and rake.[2] A few days later Nico Brown found some smaller rakes.[3]
 Download RLE: click here |
 Download RLE: click here |
 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]
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.
Download RLE: click here
References
- ↑ Richard Schank (November 24, 2014). "Re: Soup search results". Retrieved on November 25, 2014.
- ↑ Ivan Fomichev (December 27, 2014). "Pufferfish and companions". Retrieved on December 28, 2014.
- ↑ Nico Brown (December 29, 2014). "Re: Pufferfish and companions". Retrieved on December 29, 2014.
- ↑ Chris Cain (November 27, 2014). "Re: Soup search results". Retrieved on February 2, 2015.
- ↑ Ivan Fomichev (January 8, 2015). "Re: Pufferfish and companions". Retrieved on February 2, 2015.
- ↑ Chris Cain (February 10th, 2015). "Re: Small Spaceship Syntheses". Retrieved on June 15, 2015.