Difference between revisions of "Die hard"

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{{Methuselah|name=Die hard|pname=diehard|bx=8|by=3|c=7|l=130|life105=true|life106=true|plaintext=true|rle=true}}
{{Methuselah
'''Die hard''' is a [[:Category:Patterns with 7 cells|7-cell]] [[methuselah]] (essentially a collision between a [[block]] and the [[traffic lights]] sequence) that vanishes after 130 generations, which is conjectured to be the limit for patterns of 7 or fewer cells. Note that there is no limit for higher numbers of cells, as eight cells suffice to have a [[glider]] heading towards an arbitrarily distant [[blinker]].
|name         = Die hard
|pname       = diehard
|c            = 7
|bx           = 8
|by           = 3
|l            = 130
|f            = 0
|mcps        = 11
|synthesis    = 3
|synthesisRLE = true
|plaintext   = true
|rle         = true
}}
'''Die hard''' is a {{cells|7}}-cell [[methuselah]] (essentially a collision between a [[block]] and the [[traffic light]] sequence) that vanishes after 130 generations, which is conjectured to be the limit for vanishing patterns of 7 or fewer cells. Note that there is no limit for higher numbers of cells, as eight cells suffice to have a [[glider]] heading towards an arbitrarily distant [[blinker]].


Alternatively, die hard may refer to any methuselah that eventually vanishes.
=="Die hard" as a general term==
Alternatively, "die hard" or "diehard" may refer to any methuselah that eventually vanishes. Soups in [[Conway's Game of Life]] lasting at least 500 generations before disappearing completely are reported by [[apgsearch]] versions v4.69 and above and referred to as "messless methuselahs" on [[Catagolue]].<ref name="post66402" />
 
As of early {{year|2020}}, the longest-lasting diehard found in an asymmetric soup (and fitting inside a 16&times;16 bounding box) is a 1277-tick "C1" soup found by [[Rob Liston]] on February 3, 2020. The longest-lasting [[symmetric]] diehard (fitting inside a 32&times;32 bounding box) is a 1760-tick "C4_4" soup found by [[Moth Wingthane]] on January 27, 2020.<ref name="post90882" />
 
{| style="margin-left: auto; margin-right: auto"
|-
| {{EmbedViewer
|pname        = diehard1277
|position    = center
|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 ]]
|caption      = Asymmetric 1277-tick diehard
}}
| {{EmbedViewer
|pname        = diehard1760
|position    = center
|viewerconfig = #C [[ HEIGHT 600 WIDTH 600 ]]
|caption      = Symmetric 1760-tick diehard
}}
|}
 
==In other rules==
In [[HighLife]], despite the instability of the traffic light sequence, the die hard still works, disappearing after 119 generations.
 
==References==
<references>
<ref name="post66402">{{LinkForumThread
|format = ref
|title  = Re: apgsearch v4.0
|p      = 66402
|author = Ian07
|date  = December 11, 2018
}}</ref>
<ref name="post90882">{{LinkForumThread
|format = ref
|title  = Re: Soup search results
|p      = 90882
|author = Ian07
|date  = March 8, 2020
}}</ref>
</references>


==External links==
==External links==
[http://www.argentum.freeserve.co.uk/lex_d.htm#diehard Die hard] at the Life Lexicon
{{LinkLexicon|lex_d.htm#diehard}}
{{LinkCatagolue|messless_12h|patternname=diehard1277|format=long-lived pattern}}
{{LinkCatagolue|messless_17h|patternname=diehard1760|format=long-lived pattern}}
 
__NOTOC__

Revision as of 19:34, 8 March 2020

Die hard
x = 8, y = 3, rule = B3/S23 6bo$2o$bo3b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
View static image
Pattern type Methuselah
Number of cells 7
Bounding box 8 × 3
MCPS 11
Lifespan 130 generations
Final population 0
L/I 18.6
F/I 0
F/L 0
L/MCPS 11.8
Discovered by Unknown
Year of discovery Unknown

Die hard is a 7-cell methuselah (essentially a collision between a block and the traffic light sequence) that vanishes after 130 generations, which is conjectured to be the limit for vanishing patterns of 7 or fewer cells. Note that there is no limit for higher numbers of cells, as eight cells suffice to have a glider heading towards an arbitrarily distant blinker.

"Die hard" as a general term

Alternatively, "die hard" or "diehard" may refer to any methuselah that eventually vanishes. Soups in Conway's Game of Life lasting at least 500 generations before disappearing completely are reported by apgsearch versions v4.69 and above and referred to as "messless methuselahs" on Catagolue.[1]

As of early 2020, the longest-lasting diehard found in an asymmetric soup (and fitting inside a 16×16 bounding box) is a 1277-tick "C1" soup found by Rob Liston on February 3, 2020. The longest-lasting symmetric diehard (fitting inside a 32×32 bounding box) is a 1760-tick "C4_4" soup found by Moth Wingthane on January 27, 2020.[2]

x = 16, y = 16, rule = B3/S23 ob2obo2b2obo$2ob5o2bob4o$obob9o$4o4b4obo$bo3bobobobobo$3ob5o2bobobo$b 4o2bo6b2o$o3b3ob2obob2o$bo3b4obob4o$bobobo3b6o$bo3bo3b4o$3bobobo3b5o$o bo2bobo2b2obobo$bo4b3o3b2o$3o2bobob2o2b3o$3o2b2o4bo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 600 WIDTH 600 ]]
Asymmetric 1277-tick diehard
(click above to open LifeViewer)
RLE: here Plaintext: here
[[:RLE:Diehard1760]] #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 600 WIDTH 600 ]]
Symmetric 1760-tick diehard
(click above to open LifeViewer)
RLE: here Plaintext: here

In other rules

In HighLife, despite the instability of the traffic light sequence, the die hard still works, disappearing after 119 generations.

References

  1. ↑ Ian07 (December 11, 2018). Re: apgsearch v4.0 (discussion thread) at the ConwayLife.com forums
  2. ↑ Ian07 (March 8, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums

External links


Retrieved from "https://conwaylife.com/w/index.php?title=Die_hard&oldid=69848"