Difference between revisions of "Parallel HBK"
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'''Parallel half-baked knightship''' or '''Parallel HBK''' is a [[knightship]] based on the well-known [[ | '''Parallel half-baked knightship''' or '''Parallel HBK''' is a [[knightship]] based on the well-known [[half-bakery]] reaction with a [[glider]], and an improvement over the original [[half-baked knightship]]. The design was proposed before the first half-baked knightship appeared on the scene, although the actual construction was completed several days later by Chris Cain. This design allows for several slow-salvo construction recipes to be completed in parallel, whereas the first half-baked knightship did all constructions serially. | ||
There are several significant differences in design between the original half-baked knightship and Chris Cain's smaller version. The slow-salvo constructions are done serially in Goucher's design, and an extra glider is used to suppress the salvo that triggers the half-bakery trails.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=12681#p12681|title=Re: Half-bakery reaction with glider|author=Chris Cain|date=July 17, 2014|accessdate=July 18, 2014}}</ref> | There are several significant differences in design between the original half-baked knightship and Chris Cain's smaller version. The slow-salvo constructions are done serially in Goucher's design, and an extra glider is used to suppress the salvo that triggers the half-bakery trails.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=12681#p12681|title=Re: Half-bakery reaction with glider|author=Chris Cain|date=July 17, 2014|accessdate=July 18, 2014}}</ref> | ||
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Consequently, Cain's parallel knightship is much smaller than Goucher's original knightship, in terms of the population count, bounding box and period. It had also been the smallest known example of an oblique spaceship in [[Conway's Game of Life]] in terms of the bounding box before the discovery of the [[waterbear]] later in the same year. Finally, it had been the smallest true knightship (travelling on [[slope]] 2) in terms of cell count, until the discovery of [[Sir Robin]] in March {{year|2018}}. | Consequently, Cain's parallel knightship is much smaller than Goucher's original knightship, in terms of the population count, bounding box and period. It had also been the smallest known example of an oblique spaceship in [[Conway's Game of Life]] in terms of the bounding box before the discovery of the [[waterbear]] later in the same year. Finally, it had been the smallest true knightship (travelling on [[slope]] 2) in terms of cell count, until the discovery of [[Sir Robin]] in March {{year|2018}}. | ||
On December 31, 2014 Michael Simkin found a glider synthesis and allegedly built a gun for this spaceship, but nobody | On December 31, 2014 Michael Simkin found a glider synthesis and allegedly built a gun for this spaceship, but nobody managed to run the Golly script that assembles the gun until the end. Subsequently, in June 2019, an anonymous user of the coding community repl.it modified Simkin's script to work in [[lifelib]] instead of Golly, completing in a mere 15 minutes. The result has exactly 873,324,548 cells in a bounding box of 287,594,511 by 172,045,883. | ||
On January 3, 2015 Chris Cain built a [[HBK | On January 3, 2015 Chris Cain built a [[HBK gun]], that can run in Golly in reasonable time.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=15639#p15639|title=Re: HBK Synth and Gun (script)|author=Chris Cain|date=January, 2015|accessdate=January 4, 2015}}</ref> The gun's design implies an easy though non-minimal synthesis with 57,286 gliders.<ref>{{cite web|url=http://conwaylife.com/forums/viewtopic.php?f=3&t=1565#p16872|title=Re: LifeWiki Did-You-Knows|author=Dave Greene|date=February 15, 2015|accessdate=May 29, 2017}}</ref> | ||
==References== | ==References== | ||
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* [[Gemini]] | * [[Gemini]] | ||
* [[Waterbear]] | * [[Waterbear]] | ||
==External links== | |||
{{LinkLexicon|lex_p.htm#parallelhbk}} | |||
[[Category:Universal constructors]] | [[Category:Universal constructors]] | ||
[[Category:Adjustable spaceships]] | [[Category:Adjustable spaceships]] | ||
Revision as of 14:25, 25 June 2019
| Parallel HBK | |||||||
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| View static image | |||||||
| Pattern type | Spaceship | ||||||
|---|---|---|---|---|---|---|---|
| Family | Half-baked knightship | ||||||
| Number of cells | 132945 | ||||||
| Bounding box | 31080 × 32771 | ||||||
| Direction | Oblique | ||||||
| Slope | 2 | ||||||
| Period | 245912 | ||||||
| Mod | Unknown | ||||||
| Speed | (6,3)c/245912 | (6,3)c/245912 | ||||||
| Heat | Unknown | ||||||
| Discovered by | Chris Cain Dave Greene Ivan Fomichev | ||||||
| Year of discovery | 2014 | ||||||
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Parallel half-baked knightship or Parallel HBK is a knightship based on the well-known half-bakery reaction with a glider, and an improvement over the original half-baked knightship. The design was proposed before the first half-baked knightship appeared on the scene, although the actual construction was completed several days later by Chris Cain. This design allows for several slow-salvo construction recipes to be completed in parallel, whereas the first half-baked knightship did all constructions serially.
There are several significant differences in design between the original half-baked knightship and Chris Cain's smaller version. The slow-salvo constructions are done serially in Goucher's design, and an extra glider is used to suppress the salvo that triggers the half-bakery trails.[1]
Consequently, Cain's parallel knightship is much smaller than Goucher's original knightship, in terms of the population count, bounding box and period. It had also been the smallest known example of an oblique spaceship in Conway's Game of Life in terms of the bounding box before the discovery of the waterbear later in the same year. Finally, it had been the smallest true knightship (travelling on slope 2) in terms of cell count, until the discovery of Sir Robin in March 2018.
On December 31, 2014 Michael Simkin found a glider synthesis and allegedly built a gun for this spaceship, but nobody managed to run the Golly script that assembles the gun until the end. Subsequently, in June 2019, an anonymous user of the coding community repl.it modified Simkin's script to work in lifelib instead of Golly, completing in a mere 15 minutes. The result has exactly 873,324,548 cells in a bounding box of 287,594,511 by 172,045,883.
On January 3, 2015 Chris Cain built a HBK gun, that can run in Golly in reasonable time.[2] The gun's design implies an easy though non-minimal synthesis with 57,286 gliders.[3]
References
- ↑ Chris Cain (July 17, 2014). "Re: Half-bakery reaction with glider". Retrieved on July 18, 2014.
- ↑ Chris Cain (January, 2015). "Re: HBK Synth and Gun (script)". Retrieved on January 4, 2015.
- ↑ Dave Greene (February 15, 2015). "Re: LifeWiki Did-You-Knows". Retrieved on May 29, 2017.
See also
External links
- Parallel HBK at the Life Lexicon
- Patterns
- Spaceships with between 100,000 and 999,999 cells
- Periodic objects with minimum population between 100,000 and 999,999
- Patterns with between 100,000 and 999,999 cells
- Patterns found by Chris Cain
- Patterns found by Dave Greene
- Patterns found by Ivan Fomichev
- Patterns found in 2014
- Patterns that can be constructed with 1,000 or more gliders
- Outer-totalistically endemic patterns
- Spaceships
- Spaceships with period 245912
- Oblique spaceships
- Spaceships with slope 2
- Spaceships with speed (6,3)c/245912
- Spaceships with unsimplified speed (6,3)c/245912
- Half-baked knightship variants
- Universal constructors
- Adjustable spaceships