Difference between revisions of "Snark"
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The ''' | The '''Snark''' is a 90° [[Stable reflector|stable glider reflector]] discovered by [[Mike Playle]] in April 2013.<ref>{{cite web|url=http://conwaylife.com/forums/viewtopic.php?p=7819#p7819|title=Just the place for a Snark!|author=Mike Playle|date=April 25, 2013|accessdate=March 27, 2016}}</ref> It is made up of two [[Eater_1|eaters]], a [[block]] and a [[31.4]], the heart of the Snark. It is currently the fastest and the smallest 90° stable glider reflector, both in terms of the [[population]] and the [[bounding box]]. Another commonly-used stabilization of the catalyst is 34 bits, and many other variants are available. | ||
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Revision as of 21:39, 15 December 2018
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Pattern type | Stable reflector | ||||||||
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Number of cells | 52 | ||||||||
Bounding box | 23 × 17 | ||||||||
Angle | 90° | ||||||||
Repeat time | 43 | ||||||||
Discovered by | Mike Playle | ||||||||
Year of discovery | 2013 | ||||||||
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The Snark is a 90° stable glider reflector discovered by Mike Playle in April 2013.[1] It is made up of two eaters, a block and a 31.4, the heart of the Snark. It is currently the fastest and the smallest 90° stable glider reflector, both in terms of the population and the bounding box. Another commonly-used stabilization of the catalyst is 34 bits, and many other variants are available.
four Snark catalyst variants --Top: original variant by Mike Playle Left: Shannon Omick (better clearance on a diagonal) Right: Heinrich Koenig (better clearance on a different diagonal) Bottom: Simon Ekström (better clearance on two diagonals) (click above to open LifeViewer) RLE: here Plaintext: here |
The base reaction was discovered by Dietrich Leithner about 1998, but it consumed another block.[2] A catalyst that could replace the block was found with Bellman, a program for searching catalytic reactions developed by Mike Playle.
Given its small repeat time, the snark made oscillators of previously unknown periods of 43 and 53 trivial.[3] It also made most large symmetrical Herschel-loop guns obsolete, since it is now possible to make use of the Herschel gliders with a shorter path of the Herschel track itself. [4]
A coincidence: If the glider in the infobox is moved to the right by 2 cells, the south eater will act as a one-time reflector for the glider, which is then eaten by the west eater.
References
- ↑ Mike Playle (April 25, 2013). "Just the place for a Snark!". Retrieved on March 27, 2016.
- ↑ Adam P. Goucher (February 17, 2010). "Re: Incomplete search patterns - try to complete". Retrieved on May 8, 2013.
- ↑ Matthias Merzenich (April 25, 2013). "Re: Just the place for a Snark!". Retrieved on March 27, 2016.
- ↑ Dave Greene (June 8, 2013). "Re: Just the place for a Snark!". Retrieved on April 5, 2017.
External links
- Snark at the Life Lexicon