2-engine Cordership - Revision history

PK22: Formatting for the new description was incorrect.

2025-05-26T07:00:39Z

Formatting for the new description was incorrect.

← Older revision		Revision as of 07:00, 26 May 2025
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	o2b3ob5o$2obob3obob2o$o2bobo5b2o$o3bo3b2o$2o2b2o2bobo$bo2b4o$3bobo2b2o		o2b3ob5o$2obob3obob2o$o2bobo5b2o$o3bo3b2o$2o2b2o2bobo$bo2b4o$3bobo2b2o
	bo$ob3o3b2ob2o$obob2o4b3o$5o5bo$ob2o4bobobo$2ob5o3bo$bo4b4o2bo!		bo$ob3o3b2ob2o$obob2o4b3o$5o5bo$ob2o4bobobo$2ob5o3bo$bo4b4o2bo!
	\|caption = 13 {{times}} 13 initial pattern that produces a 2-engine Cordership		\|caption = {{times\|13\|13}} initial pattern that produces a 2-engine Cordership
	\|position = center		\|position = center
	\|viewerconfig = #C [[ AUTOSTART THEME 6 ZOOM 16 THUMBNAIL GPS 20 THUMBSIZE 3 HEIGHT 560 T 0 PAUSE 3 ZOOM 6 X -15 Y -10 GPS 32 LOOP 500 ]]		\|viewerconfig = #C [[ AUTOSTART THEME 6 ZOOM 16 THUMBNAIL GPS 20 THUMBSIZE 3 HEIGHT 560 T 0 PAUSE 3 ZOOM 6 X -15 Y -10 GPS 32 LOOP 500 ]]

Dvgrn: caption was incorrect after pattern replacement

2025-05-26T04:48:13Z

caption was incorrect after pattern replacement

← Older revision		Revision as of 04:48, 26 May 2025
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	o2b3ob5o$2obob3obob2o$o2bobo5b2o$o3bo3b2o$2o2b2o2bobo$bo2b4o$3bobo2b2o		o2b3ob5o$2obob3obob2o$o2bobo5b2o$o3bo3b2o$2o2b2o2bobo$bo2b4o$3bobo2b2o
	bo$ob3o3b2ob2o$obob2o4b3o$5o5bo$ob2o4bobobo$2ob5o3bo$bo4b4o2bo!		bo$ob3o3b2ob2o$obob2o4b3o$5o5bo$ob2o4bobobo$2ob5o3bo$bo4b4o2bo!
	\|caption = ~~16x16~~ initial pattern ~~which~~ produces a 2-engine Cordership		\|caption = 13 {{times}} 13 initial pattern that produces a 2-engine Cordership
	\|position = center		\|position = center
	\|viewerconfig = #C [[ AUTOSTART THEME 6 ZOOM 16 THUMBNAIL GPS 20 THUMBSIZE 3 HEIGHT 560 T 0 PAUSE 3 ZOOM 6 X -15 Y -10 GPS 32 LOOP 500 ]]		\|viewerconfig = #C [[ AUTOSTART THEME 6 ZOOM 16 THUMBNAIL GPS 20 THUMBSIZE 3 HEIGHT 560 T 0 PAUSE 3 ZOOM 6 X -15 Y -10 GPS 32 LOOP 500 ]]

DroneBetter: add b3s23love's newest artificial soup refinement, replace LifeViewer embed with it (and make zoom closer via recentering)

2025-05-24T11:22:38Z

add b3s23love's newest artificial soup refinement, replace LifeViewer embed with it (and make zoom closer via recentering)

← Older revision		Revision as of 11:22, 24 May 2025
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	\|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 8 Y 2 GPS 32 TRACKLOOP 96 1/12 1/12 ]]		\|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 8 Y 2 GPS 32 TRACKLOOP 96 1/12 1/12 ]]
	}}		}}
	The '''2-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by praosylen on December 31, {{year\|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible (ahead of the [[3-engine Cordership]]) as well as the smallest Cordership in terms of population (ahead of a variant of the [[4-engine Cordership]]) and the smallest engineered spaceship.{{refn\|group=note\|Its status as engineered is debated. In the <tt>{{cata\|census/b3s23/sep_stdin\|sep_stdin}}</tt> census, which generated and simulated soups comprised of randomly-filled regions behind switch engine pairs at random displacements, with no human intervention, it is the only switch-engine-based spaceship to have occurred, and [[Oscar Cunningham]] found a {{times\|16\|16}} initial pattern from which it emerges using [[Logic Life Search]]<ref name="post98533" /> (later reduced to {{times\|15\|15}} ~~and then~~ {{times\|14\|14}} ~~by [[b3s23love]]~~<ref name="~~post167776~~" /><ref name="~~post181943~~" />), so its unnatural nature is only due to a lack of ~~computing power~~.		The '''2-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by praosylen on December 31, {{year\|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible (ahead of the [[3-engine Cordership]]) as well as the smallest Cordership in terms of population (ahead of a variant of the [[4-engine Cordership]]) and the smallest engineered spaceship.{{refn\|group=note\|Its status as engineered is debated. In the <tt>{{cata\|census/b3s23/sep_stdin\|sep_stdin}}</tt> census, which generated and simulated soups comprised of randomly-filled regions behind switch engine pairs at random displacements, with no human intervention, it is the only switch-engine-based spaceship to have occurred, and [[Oscar Cunningham]] found a {{times\|16\|16}} initial pattern from which it emerges using [[Logic Life Search]]<ref name="post98533" /> (later reduced to {{times\|15\|15}},<ref name="post167776" /> {{times\|14\|14}}<ref name="post181943" /> and finally {{times\|13\|13}}<ref name="post212110" /> by [[b3s23love]]), so its unnatural nature is only due to a lack of searching.

	{{EmbedViewer		{{EmbedViewer
	\|rle = x = 16, y = 16, rule = B3/S23		\|rle = x = 13, y = 13, rule = B3/S23
	~~o2bob2o~~$~~o3b2ob2o2bob2o~~$~~bo2bo4bo3bobo~~$~~10b4o~~$~~2b2obo3bobobo~~$~~o4b4o3bob2o~~$		o2b3ob5o$2obob3obob2o$o2bobo5b2o$o3bo3b2o$2o2b2o2bobo$bo2b4o$3bobo2b2o
	~~4b2o2b3o2bo~~$~~b2o2bo2bo6bo~~$~~4b2o2b2o3bobo~~$~~3o2b2o2b2o4bo~~$~~ob2ob2o2b2obo~~$~~o2b~~		bo$ob3o3b2ob2o$obob2o4b3o$5o5bo$ob2o4bobobo$2ob5o3bo$bo4b4o2bo!
	~~obo4b2obo$3ob2ob2o4b3o$o2bob2o2bo3bobo$3o4bo3b2ob2o~~$~~b2obo2b4obo2bo~~!
	\|caption = 16x16 initial pattern which produces a 2-engine Cordership		\|caption = 16x16 initial pattern which produces a 2-engine Cordership
	\|position = center		\|position = center
	\|viewerconfig = #C [[ AUTOSTART THEME 6 ZOOM 16 THUMBNAIL GPS 20 THUMBSIZE 2 T 0 PAUSE 3 ZOOM 2 GPS 32 LOOP 500 ]]		\|viewerconfig = #C [[ AUTOSTART THEME 6 ZOOM 16 THUMBNAIL GPS 20 THUMBSIZE 3 HEIGHT 560 T 0 PAUSE 3 ZOOM 6 X -15 Y -10 GPS 32 LOOP 500 ]]
	\|style = width:360px;		\|style = width:360px;
	}} }}		}} }}
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	\|p = 181943		\|p = 181943
	\|date = April 6, 2024		\|date = April 6, 2024
			}}</ref>
			<ref name="post212110">{{LinkForumThread
			\|author = b3s23love
			\|title = Re: Soup search results
			\|format = ref
			\|p = 212110
			\|date = May 18, 2025
	}}</ref>		}}</ref>
	<ref name="post180672">{{LinkForumThread		<ref name="post180672">{{LinkForumThread

WhiteHawk: /* References */

2025-03-23T06:52:31Z

References

← Older revision		Revision as of 06:52, 23 March 2025
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	\|format = ref		\|format = ref
	\|title = Re: Spaceship Discussion Thread		\|title = Re: Spaceship Discussion Thread
	\|author = [[Luka Okanishi~~]] (AbhpzTa)~~		\|author = Luka Okanishi
	\|accessdate = January 4, 2018		\|accessdate = January 4, 2018
	\|date = December 31, 2017		\|date = December 31, 2017

Muzik at 17:35, 9 August 2024

2024-08-09T17:35:42Z

← Older revision		Revision as of 17:35, 9 August 2024
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	\|rle = true		\|rle = true
	\|apgcode = xq96_y8573w8aegvzys33zwg8gyvoozsvv0338gy2442cia049uo239e4z037e8x1z08464ogzy011zy3oozyf51guozyd2451032		\|apgcode = xq96_y8573w8aegvzys33zwg8gyvoozsvv0338gy2442cia049uo239e4z037e8x1z08464ogzy011zy3oozyf51guozyd2451032
	\|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 8 Y 2 ~~GRID OFF CELLBORDERS~~ GPS 32 TRACKLOOP 96 1/12 1/12 ]]		\|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 8 Y 2 GPS 32 TRACKLOOP 96 1/12 1/12 ]]
	}}		}}
	The '''2-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by praosylen on December 31, {{year\|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible (ahead of the [[3-engine Cordership]]) as well as the smallest Cordership in terms of population (ahead of a variant of the [[4-engine Cordership]]) and the smallest engineered spaceship.{{refn\|group=note\|Its status as engineered is debated. In the <tt>{{cata\|census/b3s23/sep_stdin\|sep_stdin}}</tt> census, which generated and simulated soups comprised of randomly-filled regions behind switch engine pairs at random displacements, with no human intervention, it is the only switch-engine-based spaceship to have occurred, and [[Oscar Cunningham]] found a {{times\|16\|16}} initial pattern from which it emerges using [[Logic Life Search]]<ref name="post98533" /> (later reduced to {{times\|15\|15}} and then {{times\|14\|14}} by [[b3s23love]]<ref name="post167776" /><ref name="post181943" />), so its unnatural nature is only due to a lack of computing power.		The '''2-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by praosylen on December 31, {{year\|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible (ahead of the [[3-engine Cordership]]) as well as the smallest Cordership in terms of population (ahead of a variant of the [[4-engine Cordership]]) and the smallest engineered spaceship.{{refn\|group=note\|Its status as engineered is debated. In the <tt>{{cata\|census/b3s23/sep_stdin\|sep_stdin}}</tt> census, which generated and simulated soups comprised of randomly-filled regions behind switch engine pairs at random displacements, with no human intervention, it is the only switch-engine-based spaceship to have occurred, and [[Oscar Cunningham]] found a {{times\|16\|16}} initial pattern from which it emerges using [[Logic Life Search]]<ref name="post98533" /> (later reduced to {{times\|15\|15}} and then {{times\|14\|14}} by [[b3s23love]]<ref name="post167776" /><ref name="post181943" />), so its unnatural nature is only due to a lack of computing power.

Muzik at 17:35, 9 August 2024

2024-08-09T17:35:28Z

← Older revision		Revision as of 17:35, 9 August 2024
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	\|z = 8c/96		\|z = 8c/96
	\|h = 110.4		\|h = 110.4
			\|symmetry = n
	\|discoverer = praosylen		\|discoverer = praosylen
	\|discoveryear = 2017		\|discoveryear = 2017
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	\|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 8 Y 2 GRID OFF CELLBORDERS GPS 32 TRACKLOOP 96 1/12 1/12 ]]		\|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 8 Y 2 GRID OFF CELLBORDERS GPS 32 TRACKLOOP 96 1/12 1/12 ]]
	}}		}}
	The '''2-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by praosylen on December 31, {{year\|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible (ahead of the [[3-engine Cordership]]) as well as the smallest Cordership in terms of population (ahead of a variant of the [[4-engine Cordership]]) and the smallest engineered spaceship.{{refn\|group=note\|Its status as engineered is debated. In the <tt>{{cata\|census/b3s23/sep_stdin\|sep_stdin}}</tt> census, which generated and simulated soups comprised of randomly-filled regions behind switch engine pairs at random displacements, with no human intervention, it is the only switch-engine-based spaceship to have occurred, and [[Oscar Cunningham]] found a {{times\|16\|16}} initial pattern from which it emerges using [[Logic Life Search]]<ref name="post98533" /> (later reduced to {{times\|15\|15}} and then {{times\|14\|14}} by [[b3s23love]]<ref name="post167776" /><ref name="post181943" />), so its unnatural nature is only due to a lack of computing power. {{EmbedViewer		The '''2-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by praosylen on December 31, {{year\|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible (ahead of the [[3-engine Cordership]]) as well as the smallest Cordership in terms of population (ahead of a variant of the [[4-engine Cordership]]) and the smallest engineered spaceship.{{refn\|group=note\|Its status as engineered is debated. In the <tt>{{cata\|census/b3s23/sep_stdin\|sep_stdin}}</tt> census, which generated and simulated soups comprised of randomly-filled regions behind switch engine pairs at random displacements, with no human intervention, it is the only switch-engine-based spaceship to have occurred, and [[Oscar Cunningham]] found a {{times\|16\|16}} initial pattern from which it emerges using [[Logic Life Search]]<ref name="post98533" /> (later reduced to {{times\|15\|15}} and then {{times\|14\|14}} by [[b3s23love]]<ref name="post167776" /><ref name="post181943" />), so its unnatural nature is only due to a lack of computing power.

			{{EmbedViewer
	\|rle = x = 16, y = 16, rule = B3/S23		\|rle = x = 16, y = 16, rule = B3/S23
	o2bob2o$o3b2ob2o2bob2o$bo2bo4bo3bobo$10b4o$2b2obo3bobobo$o4b4o3bob2o$		o2bob2o$o3b2ob2o2bob2o$bo2bo4bo3bobo$10b4o$2b2obo3bobobo$o4b4o3bob2o$
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	The {{POTY\|year=2017\|rank=1}}		The {{POTY\|year=2017\|rank=1}}

	==Reactions==		== Reactions ==
	[[Dave Greene]] noted that the 2-engine Cordership, like its [[3-engine Cordership\|3-engine]] counterpart, can be stopped by a single [[glider]] from behind without releasing any [[glider]]s or other [[spaceship]]s,<ref name="post54470" /> and updated [[Martin Grant]]'s [[Model D Heisenburp\|Model D]] [[Heisenburp device]] for the 2-engine Cordership.<ref name="post54470" />		[[Dave Greene]] noted that the 2-engine Cordership, like its [[3-engine Cordership\|3-engine]] counterpart, can be stopped by a single [[glider]] from behind without releasing any [[glider]]s or other [[spaceship]]s,<ref name="post54470" /> and updated [[Martin Grant]]'s [[Model D Heisenburp\|Model D]] [[Heisenburp device]] for the 2-engine Cordership.<ref name="post54470" />

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	[[gmc_nxtman]] pointed out that the 2-engine Cordership can reflect a glider 180 degrees, while preserving its mod-4 timing, resulting in an updated version of [[glider loop]].<ref name="post54583" />		[[gmc_nxtman]] pointed out that the 2-engine Cordership can reflect a glider 180 degrees, while preserving its mod-4 timing, resulting in an updated version of [[glider loop]].<ref name="post54583" />

	==Synthesis and seeds==		== Synthesis and seeds ==
	[[Dave Greene]] found a {{gliders\|13}} [[synthesis]] of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[Luka Okanishi]] improved to {{gliders\|9\|text=9 gliders}} <ref name="post54453" />. Forum user 'vilc' found an {{gliders\|8\|text=8-glider recipe}} in March {{year\|2024}}.<ref name="post180672" />		[[Dave Greene]] found a {{gliders\|13}} [[synthesis]] of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[Luka Okanishi]] improved to {{gliders\|9\|text=9 gliders}} <ref name="post54453" />. Forum user 'vilc' found an {{gliders\|8\|text=8-glider recipe}} in March {{year\|2024}}.<ref name="post180672" />

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	}}		}}

	==Uses==		== Uses ==
	[[David Bell]] built a [[log(t) growth]] from four 2-engine Corderships,<ref name="post54585" /> and a 4-engine Cordership [[rake]] from two adjacent 2-engine Corderships,<ref name="post54628" /> both on January 3rd, {{year\|2018}}. [[2718281828]], [[Dave Greene]] and [[Chris Cain]] posted glider syntheses for this rake on January 7th, allowing for the construction of [[breeder]]s.<ref name="post54798" /><ref name="post54801" /><ref name="post54808" />		[[David Bell]] built a [[log(t) growth]] from four 2-engine Corderships,<ref name="post54585" /> and a 4-engine Cordership [[rake]] from two adjacent 2-engine Corderships,<ref name="post54628" /> both on January 3rd, {{year\|2018}}. [[2718281828]], [[Dave Greene]] and [[Chris Cain]] posted glider syntheses for this rake on January 7th, allowing for the construction of [[breeder]]s.<ref name="post54798" /><ref name="post54801" /><ref name="post54808" />

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	[[Entity Valkyrie]] built an {{times\|714\|501}} 2-engine Cordership gun on January 6, 2018, using [[Luka Okanishi]]'s 9-glider synthesis;<ref name="post54750" /> [[BlinkerSpawn]] noted that this gun could be compacted to {{times\|385\|253}} using the [[quadri-Snark]].<ref name="post54753" /> [[Dave Greene]] built an unrelated period-556 2-engine Cordership gun on January 7.<ref name="post54814" /><ref name="post54815" /> Entity Valkyrie built a different gun using a [[boat]] [[keeper]] reaction on January 10.<ref name="post54928" /> On August 29 that year, [[Nathaniel Johnston]] completed a stable glider to 2-engine Cordership [[converter]],<ref name="post63153" /> which converts an input glider to a 2-engine Cordership at [[repeat time]] 556 ticks, thus allowing for arbitrary high-period guns to be built. The following is an improved design by Dave Greene:		[[Entity Valkyrie]] built an {{times\|714\|501}} 2-engine Cordership gun on January 6, 2018, using [[Luka Okanishi]]'s 9-glider synthesis;<ref name="post54750" /> [[BlinkerSpawn]] noted that this gun could be compacted to {{times\|385\|253}} using the [[quadri-Snark]].<ref name="post54753" /> [[Dave Greene]] built an unrelated period-556 2-engine Cordership gun on January 7.<ref name="post54814" /><ref name="post54815" /> Entity Valkyrie built a different gun using a [[boat]] [[keeper]] reaction on January 10.<ref name="post54928" /> On August 29 that year, [[Nathaniel Johnston]] completed a stable glider to 2-engine Cordership [[converter]],<ref name="post63153" /> which converts an input glider to a 2-engine Cordership at [[repeat time]] 556 ticks, thus allowing for arbitrary high-period guns to be built. The following is an improved design by Dave Greene:

	{{EmbedViewer		{{EmbedViewer
	\|pname = gliderto2ec		\|pname = gliderto2ec
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	[https://conwaylife.com/w/index.php?title=RLE:Singlechannel2ecshotgun&action=edit This] is a 2494x2711 single-channel 2-engine Cordership slide gun assembled by Entity Valkyrie.		[https://conwaylife.com/w/index.php?title=RLE:Singlechannel2ecshotgun&action=edit This] is a 2494x2711 single-channel 2-engine Cordership slide gun assembled by Entity Valkyrie.
	-->		-->

	Toward the end of 2018, Adam P. Goucher added a "0-degree" slow-salvo synthesis of a 2-engine Cordership to [[slmake]], to allow more efficient long [[elbow]] pushes to be automatically compiled in [[self-constructing]] [[spaceship]] [[recipe]]s.<ref name="post63956" />		Toward the end of 2018, Adam P. Goucher added a "0-degree" slow-salvo synthesis of a 2-engine Cordership to [[slmake]], to allow more efficient long [[elbow]] pushes to be automatically compiled in [[self-constructing]] [[spaceship]] [[recipe]]s.<ref name="post63956" />

	==See also==		== See also ==
	* {{CategoryLink\|Corderships}}		* {{CategoryLink\|Corderships}}

	==Notes==		== Notes ==
	<references group="note"/>		<references group="note"/>

	==References==		== References ==
	<references>		<references>
	<ref name="post54444">{{LinkForumThread		<ref name="post54444">{{LinkForumThread
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	</references>		</references>

	==External links==		== External links ==
	* {{LinkLexicon\|lex_1.htm#a-2enginecordership}}		* {{LinkLexicon\|lex_1.htm#a-2enginecordership}}
	* {{LinkCatagolue\|xq96_y8573w8aegvzys33zwg8gyvoozsvv0338gy2442cia049uo239e4z037e8x1z08464ogzy011zy3oozyf51guozyd2451032\|format=extended}}		* {{LinkCatagolue\|xq96_y8573w8aegvzys33zwg8gyvoozsvv0338gy2442cia049uo239e4z037e8x1z08464ogzy011zy3oozyf51guozyd2451032\|format=extended}}

Dvgrn: Mention vilc's reduction to the 2EC seed

2024-06-30T23:20:12Z

Mention vilc's reduction to the 2EC seed

← Older revision		Revision as of 23:20, 30 June 2024
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	[[Dave Greene]] found a {{gliders\|13}} [[synthesis]] of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[Luka Okanishi]] improved to {{gliders\|9\|text=9 gliders}} <ref name="post54453" />. Forum user 'vilc' found an {{gliders\|8\|text=8-glider recipe}} in March {{year\|2024}}.<ref name="post180672" />		[[Dave Greene]] found a {{gliders\|13}} [[synthesis]] of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[Luka Okanishi]] improved to {{gliders\|9\|text=9 gliders}} <ref name="post54453" />. Forum user 'vilc' found an {{gliders\|8\|text=8-glider recipe}} in March {{year\|2024}}.<ref name="post180672" />

	Two-glider [[seed]]s using as few as 9 still lifes and [[one-glider seed]]s using 15 still lifes are known.<ref name="post54492" /><ref name="post57674" />		Two-glider [[seed]]s using as few as 8 still lifes and [[one-glider seed]]s using 14 or 15 still lifes are known.<ref name="post54492" /><ref name="post57674" /><ref name="post188787" />

	{{EmbedViewer		{{EmbedViewer
	\|pname = 2enginecordershipslowsalvo		\|pname = 2enginecordershipslowsalvo
	\|caption = [[Slow salvo]] construction of a one-glider seed		\|caption = [[Slow salvo]] construction of a 15-object one-glider seed
	\|position = center		\|position = center
	\|viewerconfig = #C [[ THEME 6 THUMBNAIL THUMBSIZE 2 AUTOSTART X -375 Y -375 ZOOM 6 GRID OFF CELLBORDERS LOOP 5000 ]]		\|viewerconfig = #C [[ THEME 6 THUMBNAIL THUMBSIZE 2 AUTOSTART X -375 Y -375 ZOOM 6 GRID OFF CELLBORDERS LOOP 5000 ]]
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	\|date = March 21, 2024		\|date = March 21, 2024
	}}</ref>		}}</ref>
			<ref name="post188787">{{LinkForumThread
			\|p = 188787
			\|format = ref
			\|title = Re: One Glider Seeds
			\|author = vilc
			\|date = June 30, 2024
			}}</ref>
	</references>		</references>

Dvgrn: add link to b3s23love's 14x14 engineered "soup"

2024-04-14T13:46:53Z

add link to b3s23love's 14x14 engineered "soup"

← Older revision		Revision as of 13:46, 14 April 2024
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	\|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 8 Y 2 GRID OFF CELLBORDERS GPS 32 TRACKLOOP 96 1/12 1/12 ]]		\|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 8 Y 2 GRID OFF CELLBORDERS GPS 32 TRACKLOOP 96 1/12 1/12 ]]
	}}		}}
	The '''2-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by praosylen on December 31, {{year\|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible (ahead of the [[3-engine Cordership]]) as well as the smallest Cordership in terms of population (ahead of a variant of the [[4-engine Cordership]]) and the smallest engineered spaceship.{{refn\|group=note\|Its status as engineered is debated. In the <tt>{{cata\|census/b3s23/sep_stdin\|sep_stdin}}</tt> census, which generated and simulated soups comprised of randomly-filled regions behind switch engine pairs at random displacements, with no human intervention, it is the only switch-engine-based spaceship to have occurred, and [[Oscar Cunningham]] found a {{times\|16\|16}} initial pattern from which it emerges using [[Logic Life Search]]<ref name="post98533" /> (later reduced to {{times\|15\|15}} by [[b3s23love]]<ref name="post167776" />), so its unnatural nature is only due to a lack of computing power. {{EmbedViewer		The '''2-engine Cordership''' is a [[c/12 diagonal]] [[spaceship]] that was discovered by praosylen on December 31, {{year\|2017}}.<ref name="post54444" /> It is the [[Cordership]] that uses the fewest number of [[switch engine]]s known to be possible (ahead of the [[3-engine Cordership]]) as well as the smallest Cordership in terms of population (ahead of a variant of the [[4-engine Cordership]]) and the smallest engineered spaceship.{{refn\|group=note\|Its status as engineered is debated. In the <tt>{{cata\|census/b3s23/sep_stdin\|sep_stdin}}</tt> census, which generated and simulated soups comprised of randomly-filled regions behind switch engine pairs at random displacements, with no human intervention, it is the only switch-engine-based spaceship to have occurred, and [[Oscar Cunningham]] found a {{times\|16\|16}} initial pattern from which it emerges using [[Logic Life Search]]<ref name="post98533" /> (later reduced to {{times\|15\|15}} and then {{times\|14\|14}} by [[b3s23love]]<ref name="post167776" /><ref name="post181943" />), so its unnatural nature is only due to a lack of computing power. {{EmbedViewer
	\|rle = x = 16, y = 16, rule = B3/S23		\|rle = x = 16, y = 16, rule = B3/S23
	o2bob2o$o3b2ob2o2bob2o$bo2bo4bo3bobo$10b4o$2b2obo3bobobo$o4b4o3bob2o$		o2bob2o$o3b2ob2o2bob2o$bo2bo4bo3bobo$10b4o$2b2obo3bobobo$o4b4o3bob2o$
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	\|p = 167776		\|p = 167776
	\|date = September 25, 2023		\|date = September 25, 2023
			}}</ref>
			<ref name="post181943">{{LinkForumThread
			\|author = b3s23love
			\|title = Re: Soup search results
			\|format = ref
			\|p = 181943
			\|date = April 6, 2024
	}}</ref>		}}</ref>
	<ref name="post180672">{{LinkForumThread		<ref name="post180672">{{LinkForumThread

Dvgrn: fix punctuation error, remove run-on sentence, and add a reference for the statement just added

2024-03-22T11:06:26Z

fix punctuation error, remove run-on sentence, and add a reference for the statement just added

← Older revision		Revision as of 11:06, 22 March 2024
Line 54:		Line 54:

	==Synthesis and seeds==		==Synthesis and seeds==
	[[Dave Greene]] found a {{gliders\|13}} [[synthesis]] of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[Luka Okanishi]] improved to {{gliders\|9\|text=9 gliders}} <ref name="post54453" />~~, which was then optimised to~~ {{gliders\|8\|text=8 ~~gliders~~}}		[[Dave Greene]] found a {{gliders\|13}} [[synthesis]] of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[Luka Okanishi]] improved to {{gliders\|9\|text=9 gliders}} <ref name="post54453" />. Forum user 'vilc' found an {{gliders\|8\|text=8-glider recipe}} in March {{year\|2024}}.<ref name="post180672" />

	Two-glider [[seed]]s using as few as 9 still lifes and [[one-glider seed]]s using 15 still lifes are known.<ref name="post54492" /><ref name="post57674" />		Two-glider [[seed]]s using as few as 9 still lifes and [[one-glider seed]]s using 15 still lifes are known.<ref name="post54492" /><ref name="post57674" />
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	\|date = September 25, 2023		\|date = September 25, 2023
	}}</ref>		}}</ref>
			<ref name="post180672">{{LinkForumThread
			\|p = 180672
			\|format = ref
			\|title = Re: Small Spaceship Syntheses
			\|author = vilc
			\|date = March 21, 2024
			}}</ref>

	</references>		</references>

Haycat2009 at 23:52, 20 March 2024

2024-03-20T23:52:12Z

← Older revision		Revision as of 23:52, 20 March 2024
Line 54:		Line 54:

	==Synthesis and seeds==		==Synthesis and seeds==
	[[Dave Greene]] found a {{gliders\|13}} [[synthesis]] of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[Luka Okanishi]] improved to {{gliders\|9\|text=9 gliders}}.<ref name="post54453" />		[[Dave Greene]] found a {{gliders\|13}} [[synthesis]] of the 2-engine Cordership on the day of its discovery,<ref name="post54450" /> which [[Luka Okanishi]] improved to {{gliders\|9\|text=9 gliders}} <ref name="post54453" />, which was then optimised to {{gliders\|8\|text=8 gliders}}

	Two-glider [[seed]]s using as few as 9 still lifes and [[one-glider seed]]s using 15 still lifes are known.<ref name="post54492" /><ref name="post57674" />		Two-glider [[seed]]s using as few as 9 still lifes and [[one-glider seed]]s using 15 still lifes are known.<ref name="post54492" /><ref name="post57674" />