Copperhead: Difference between revisions
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'''Copperhead''' is a [[c/10 orthogonal]] [[spaceship]] discovered by | '''Copperhead''' is a [[c/10 orthogonal]] [[spaceship]] discovered by [[zdr]] on March 5, {{year|2016}} using a modified version of [[gfind]] known as [[zfind]].<ref>{{LinkForumThread|f=2|t=2057|title=is this c/10 spaceship known?|author=zdr|date=March 5, 2016|format=ref}}</ref> It was the first spaceship of this speed to be discovered, and surprised many due to its small size and high period. | ||
{{POTY|year=2016|rank=2|behind=the [[caterloopillar]]s}} | {{POTY|year=2016|rank=2|behind=the [[caterloopillar]]s}} | ||
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<div style="clear:left"> | <div style="clear:left"> | ||
==Reactions== | ==Reactions== | ||
The ship hauls a [[block]] behind it, which makes for interesting reactions involving other ships. [[Dean Hickerson]] built a [[sawtooth]], that uses copperhead's ability to turn a [[heavyweight spaceship]] into a [[loaf]].<ref>{{ | The ship hauls a [[block]] behind it, which makes for interesting reactions involving other ships. [[Dean Hickerson]] built a [[sawtooth]], that uses copperhead's ability to turn a [[heavyweight spaceship]] into a [[loaf]].<ref>{{LinkForumThread|f=2|t=2057|p=28119|title=Re: is this c/10 spaceship known?|author=Dean Hickerson|date=6 March, 2016|format=ref}}</ref> It can also eat gliders and [[middleweight spaceship]]s cleanly from behind, and [[lightweight spaceship]]s from the side of the block. Its front end can cleanly burn through [[blinker]]s, creating a c/10 [[blinker fuse]]. | ||
===Fireship=== | ===Fireship=== | ||
{{main|Fireship}} | {{main|Fireship}} | ||
[[Simon Ekström]] found [[Fireship|what appeared to be a tagalong]] with a large spark on March 20, 2016.<ref>{{ | [[Simon Ekström]] found [[Fireship|what appeared to be a tagalong]] with a large spark on March 20, 2016.<ref>{{LinkForumThread|p=28956|title=Re: is this c/10 spaceship known?|author=Simon Ekström|date=March 20, 2016|format=ref}}</ref> Unlike most tagalongs, this tagalong actually temporarily interacts with the hauled block, and is thus not a true tagalong but a whole new spaceship, named [[fireship]] due to its unusual spark.<ref>{{LinkForumThread|f=2|t=2057|p=28988|title=Re: is this c/10 spaceship known?|author=towerator|date=20 March 2016|format=ref}}</ref> However, blocks hauled by the tagalongs in tagalong pyramids are unaffected, and are thus true tagalongs. | ||
A [[Fireship tagalong|2c/20 tagalong for the fireship]] is also known, discovered by [[christoph.r]] on October 11, 2018.<ref>{{ | A [[Fireship tagalong|2c/20 tagalong for the fireship]] is also known, discovered by [[christoph.r]] on October 11, 2018.<ref>{{LinkForumThread|f=2|t=576|p=64623|title=Re: Thread for your unsure discoveries|author=christoph.r|date=October 11, 2018|format=ref}}</ref> | ||
===Cottonmouth=== | ===Cottonmouth=== | ||
{{main|Cottonmouth}} | {{main|Cottonmouth}} | ||
A true pushalong known as the [[cottonmouth]] was found by [[AforAmpere]] on March 24, 2018 for both the copperhead and the similar [[fireship]]. Because its front end matches that of the copperhead, it can be infinitely placed on itself.<ref>{{ | A true pushalong known as the [[cottonmouth]] was found by [[AforAmpere]] on March 24, 2018 for both the copperhead and the similar [[fireship]]. Because its front end matches that of the copperhead, it can be infinitely placed on itself.<ref>{{LinkForumThread|f=2|t=2031|p=58357|title=Re: Spaceship Discussion Thread|author=AforAmpere|date=March 24, 2018|format=ref}}</ref> | ||
==Synthesis== | ==Synthesis== | ||
The first final step for a synthesis, starting from a large, unsynthesized still life, was proposed by [[praosylen]] on the day of discovery. An alternative synthesis utilising [[fumarole]] as a predecessor, presented by Tanner Jacobi an hour later, was much more efficient. After optimizations by Mark Niemiec and Chris Cain the total synthesis cost made 22 gliders. A copperhead [[gun]] was then completed by Alexey Nigin on March 6, 2016.<ref>{{ | The first final step for a synthesis, starting from a large, unsynthesized still life, was proposed by [[praosylen]] on the day of discovery. An alternative synthesis utilising [[fumarole]] as a predecessor, presented by Tanner Jacobi an hour later, was much more efficient. After optimizations by Mark Niemiec and Chris Cain the total synthesis cost made 22 gliders. A copperhead [[gun]] was then completed by Alexey Nigin on March 6, 2016.<ref>{{LinkForumThread|f=2|t=2057|p=28101|title=Re: is this c/10 spaceship known?|author=Alexey Nigin|date=March 6, 2016|format=ref}}</ref> A faster gun was constructed one day later.<ref>{{LinkForumThread|p=28176|title=Re: is this c/10 spaceship known?|author=gmc_nxtman|date=7 March, 2016|format=ref}}</ref> | ||
gmc_nxtman reduced the copperhead's synthesis cost to 14 gliders on July 9, 2017;<ref>{{ | gmc_nxtman reduced the copperhead's synthesis cost to 14 gliders on July 9, 2017;<ref>{{LinkForumThread|f=2|t=2057|p=46308|title=Re: is this c/10 spaceship known?|author=gmc_nxtman|date=July 9, 2017|format=ref}}</ref> 2718281828 posted a 13-glider synthesis on January 9, 2018.<ref name="post54874" /> | ||
===Soup search results=== | ===Soup search results=== | ||
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==Naming== | ==Naming== | ||
Various names were proposed on the day of the ship's discovery; for example copperhead, blockhauler, decapod, cuttlefish and blockfish. zdr settled on copperhead.<ref>{{ | Various names were proposed on the day of the ship's discovery; for example copperhead, blockhauler, decapod, cuttlefish and blockfish. zdr settled on copperhead.<ref>{{LinkForumThread|f=2|t=2057|p=28078|title=Re: is this c/10 spaceship known?|author=zdr|date=6 March 2016|format=ref}}</ref> | ||
==Gallery== | ==Gallery== | ||
{| | {| | ||
|- | |- | ||
| [[File:Copperhead eater.png|thumb|A simple copperhead eater found by Simon Ekström.<ref name="post28146" /> | | [[File:Copperhead eater.png|thumb|A simple copperhead eater found by Simon Ekström.<ref name="post28146" />{{br}} | ||
[[Media:Copperhead eater.gif|View animated image]]]] | [[Media:Copperhead eater.gif|View animated image]]]] | ||
| [[File:First copperhead.png|thumb|The phase the copperhead was first found in.]] | | [[File:First copperhead.png|thumb|The phase the copperhead was first found in.]] | ||
|} | |} | ||
== | == Other rules == | ||
[[File:Goldenhead.png|frame|right|DryLife's goldenhead.]] | [[File:Goldenhead.png|frame|right|DryLife's goldenhead.]] | ||
In | In [[DryLife]], an extremely similar spaceship (dubbed the '''goldenhead''') also travels at c/10 orthogonal. It differs from the normal copperhead by 2 cells in one phase. A normal copperhead at this phase will turn into a goldenhead in DryLife, and conversely this phase will return to a copperhead in normal Life. | ||
==See also== | ==See also== | ||
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==External links== | ==External links== | ||
{{LinkCatagolue|xq10_o5995ozes88sezw33}} | * {{LinkCatagolue|xq10_o5995ozes88sezw33}} | ||
{{LinkPentadecathlonObject|28P10H1V0.1}} | * {{LinkPentadecathlonObject|28P10H1V0.1}} | ||
{{LinkLexicon|lex_c.htm#copperhead}} | * {{LinkLexicon|lex_c.htm#copperhead}} | ||
* Alexey Nigin: ''[https://niginsblog.wordpress.com/2016/03/07/new-spaceship-speed-in-conways-game-of-life/ New Spaceship Speed in Conway’s Game of Life]'' | * Alexey Nigin: ''[https://niginsblog.wordpress.com/2016/03/07/new-spaceship-speed-in-conways-game-of-life/ New Spaceship Speed in Conway’s Game of Life]'' | ||
Revision as of 06:14, 8 October 2022
| Copperhead | |||||||||
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| Pattern type | Spaceship | ||||||||
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| Number of cells | 28 | ||||||||
| Bounding box | 6 × 12 | ||||||||
| Direction | Orthogonal | ||||||||
| Period | 10 (mod: 10) | ||||||||
| Speed | c/10 | c/10 | ||||||||
| Heat | 27.8 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | zdr | ||||||||
| Year of discovery | 2016 | ||||||||
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Copperhead is a c/10 orthogonal spaceship discovered by zdr on March 5, 2016 using a modified version of gfind known as zfind.[1] It was the first spaceship of this speed to be discovered, and surprised many due to its small size and high period.
Copperhead ranked second place in the Pattern of the Year 2016 competition on the ConwayLife.com forums, behind the caterloopillars.[2]
Reactions
The ship hauls a block behind it, which makes for interesting reactions involving other ships. Dean Hickerson built a sawtooth, that uses copperhead's ability to turn a heavyweight spaceship into a loaf.[3] It can also eat gliders and middleweight spaceships cleanly from behind, and lightweight spaceships from the side of the block. Its front end can cleanly burn through blinkers, creating a c/10 blinker fuse.
Fireship
- Main article: Fireship
Simon Ekström found what appeared to be a tagalong with a large spark on March 20, 2016.[4] Unlike most tagalongs, this tagalong actually temporarily interacts with the hauled block, and is thus not a true tagalong but a whole new spaceship, named fireship due to its unusual spark.[5] However, blocks hauled by the tagalongs in tagalong pyramids are unaffected, and are thus true tagalongs.
A 2c/20 tagalong for the fireship is also known, discovered by christoph.r on October 11, 2018.[6]
Cottonmouth
- Main article: Cottonmouth
A true pushalong known as the cottonmouth was found by AforAmpere on March 24, 2018 for both the copperhead and the similar fireship. Because its front end matches that of the copperhead, it can be infinitely placed on itself.[7]
Synthesis
The first final step for a synthesis, starting from a large, unsynthesized still life, was proposed by praosylen on the day of discovery. An alternative synthesis utilising fumarole as a predecessor, presented by Tanner Jacobi an hour later, was much more efficient. After optimizations by Mark Niemiec and Chris Cain the total synthesis cost made 22 gliders. A copperhead gun was then completed by Alexey Nigin on March 6, 2016.[8] A faster gun was constructed one day later.[9]
gmc_nxtman reduced the copperhead's synthesis cost to 14 gliders on July 9, 2017;[10] 2718281828 posted a 13-glider synthesis on January 9, 2018.[11]
Soup search results
The first copperhead to emerge from the ash of a soup appeared on April 4, 2016 in a D2_+2 haul submitted to Catagolue by Apple Bottom.[12][13] Several more copperheads have since been found in this and other related symmetries. It was the first spaceship with a non-standard speed to appear in a soup search, and the only such spaceship until the c/7 orthogonal loafer in 2020.
Naming
Various names were proposed on the day of the ship's discovery; for example copperhead, blockhauler, decapod, cuttlefish and blockfish. zdr settled on copperhead.[14]
Gallery
 View animated image |
 |
Other rules
In DryLife, an extremely similar spaceship (dubbed the goldenhead) also travels at c/10 orthogonal. It differs from the normal copperhead by 2 cells in one phase. A normal copperhead at this phase will turn into a goldenhead in DryLife, and conversely this phase will return to a copperhead in normal Life.
See also
References
- ↑ zdr (March 5, 2016). is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
- ↑ Alexey Nigin (June 3, 2017). Pattern of the Year 2016 (Results) (discussion thread) at the ConwayLife.com forums
- ↑ Dean Hickerson (6 March, 2016). Re: is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
- ↑ Simon Ekström (March 20, 2016). Re: is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
- ↑ towerator (20 March 2016). Re: is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
- ↑ christoph.r (October 11, 2018). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
- ↑ AforAmpere (March 24, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Alexey Nigin (March 6, 2016). Re: is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
- ↑ gmc_nxtman (7 March, 2016). Re: is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
- ↑ gmc_nxtman (July 9, 2017). Re: is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
- ↑ 2718281828 (January 9, 2018). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Apple Bottom (April 4, 2016). "Haul". Catagolue. Retrieved on April 4, 2016.
- ↑ Apple Bottom (April 4, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ zdr (6 March 2016). Re: is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
- ↑ Simon Ekström (March 6, 2016). Re: is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
External links
- Copperhead at Adam P. Goucher's Catagolue
- 28P10H1V0.1 at Heinrich Koenig's Game of Life Object Catalogs
- Copperhead at the Life Lexicon
- Alexey Nigin: New Spaceship Speed in Conway’s Game of Life
Categories:
- Patterns
- Spaceships with 28 cells
- Periodic objects with minimum population 28
- Patterns with 28 cells
- Patterns found by zdr
- Patterns found in 2016
- Patterns that can be constructed with 13 gliders
- Spaceships
- Spaceships with period 10
- Orthogonal spaceships
- Spaceships with speed c/10
- Spaceships with unsimplified speed c/10
- Spaceships with heat 27
- Spaceships with mod 10
- Pattern of the Year top contenders
- Non-monotonic spaceships
- Patterns discovered by pseudonymous users
- Patterns with bilateral orthogonal symmetry
- Semi-natural periodic objects