Snacker: Difference between revisions

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Line 10: Line 10:
|v                = 0.77
|v                = 0.77
|sv              = 0.77
|sv              = 0.77
|symmetry        = +e
|discoverer      = Mark Niemiec
|discoverer      = Mark Niemiec
|discoveryear    = 1972
|discoveryear    = 1972
|rulemin          = B3/S23
|rulemin          = B3/S23
|rulemax          = B3/S23
|rulemax          = B3/S23
|rulespecial      = [[Conway's Game of Life|Conway Life]]
|isorulemin      = B3-ckny/S23ainry
|isorulemin      = B3-ckny/S23ainry
|isorulemax      = B2i34-aejn5-aeiq6-i7c/S234-aijrw5-aiqy6-c
|isorulemax      = B2i34-aejn5-aeiq6-i7c/S234-aijrw5-aiqy6-c
|synthesis        = 17
|synthesis        = 16
|synthesisRLE    = true
|synthesisRLE    = true
|plaintext        = true
|plaintext        = true
Line 26: Line 26:
|pentadecathlonid = 40P9.2
|pentadecathlonid = 40P9.2
}}
}}
'''Snacker''' is a [[pentadecathlon]] with [[eater 1]] stabilizers that force it into a lower [[period]] (from {{period|15|brief}} to {{period|9|brief}}). It was found by [[Mark Niemiec]] in {{year|1972}}.<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> The stabilizers make the [[Polyomino#Dominoes|domino]] [[spark]] largely inaccessible, but the snacker is extensible as shown below and so a more accessible period 9 domino spark can be obtained – this is exactly the method that was used to create the first period {{period|18|brief}} oscillator, [[117P18]]. A more accessible domino spark can also be obtained using a different oscillator shown below.
'''Snacker''' is a {{period|9}} [[oscillator]] in which four [[eater 1]]s [[hassle]] a [[pentadecathlon]], found by [[Mark Niemiec]] in {{year|1972}}.<ref>{{CiteLifeline|vol=9|pages=page 3}}</ref><ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref>


This oscillator first appeared [[semi-natural]]ly in the form of a stabilization by [[fourteener]]s instead of [[eater 1]]s in March {{year|2016}}.<ref name="post29348" />
The snacker produces [[domino]] [[spark]]s, which can be used for a [[p36 toad hassler]]. In other cases the sparks are largely inaccessible due to the eaters; however, the snacker can be extended by putting more pentadecathlons as shown below, or an alternative eater which is also used in [[L200]] can be used, and so a more accessible period 9 domino spark can be obtained -- this method was used to create the first {{period|18}} oscillator, [[117P18]]. Stronger domino sparkers are also known, for example [[50P9]] and [[104P9]].


==Gallery==
This oscillator first appeared [[semi-natural]]ly in the form stabilized by [[fourteener]]s instead of eater 1s in March {{year|2016}}.<ref name="post29415" />
{|
 
|-
{{EmbedViewer
|[[Image:Snacker2.png|framed|left|Additional pentadecathlons can be added to extend snacker. The alternate stabilization on the right was found by Dean Hickerson in April 1998.<br />{{JavaRLE|snacker2}}]]
|pname        = extendedsnacker
|| {{EmbedViewer
|viewerconfig = #C [[ AUTOSTART GPS 3 LOOP 9 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 320 WIDTH 600 ]]
|viewerconfig = #C [[ AUTOSTART GPS 3 LOOP 9 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 320 WIDTH 600 ]]
|pname        = p9dominosparkers
|caption      = A much more accessible p9 domino sparker that is<br>only 10 cells larger, and its double variant.<br>
|position    = center
|position    = center
|caption      = Additional pentadecathlons can be added to extend snacker, as used in [[117P18]]. The alternate stabilization on the right was found by Dean Hickerson in April {{year|1998}}
|style        = width:300px;
|apgcode      = xp9_o8geheg8oz0230o032zx1u1zx16hzy02t2zy02d2zc453x354c
}}
}}
|}


==See also==
== See also ==
*[[Worker bee]]
* [[Worker bee]]
* Former smallest [[Period-54 glider gun]], which uses a snacker
* [[p29 pentadecathlon hassler]]
* [[72P119]]


==References==
== References ==
<references>
<references>
<ref name="post29348">{{LinkForumThread
<ref name="post29415">{{LinkForumThread
|format = ref
|format = ref
|p      = 29415
|title  = Re: Soup search results
|title  = Re: Soup search results
|p      = 29348
|author = Maia Karpovich
|author = thunk
|date  = March 28, 2016
|date  = March 28, 2016
}}</ref>
}}</ref>
</references>
</references>


==External links==
== External links ==
{{LinkWeisstein|Snacker.html}}
* {{LinkLexicon|lex_s.htm#snacker}}
{{LinkLexicon|lex_s.htm#snacker}}
* {{LinkCatagolue|xp9_32acxca23zy04r4zy04r4zo8a6x6a8o}}
{{LinkCatagolue|xp9_32acxca23zy04r4zy04r4zo8a6x6a8o}}
* {{LinkPentadecathlonObject|40P9.2}}
{{LinkPentadecathlonObject|40P9.2}}


{{Symmetry|orthogonal4}}
{{Sparker|p=9|type=domino|strength=strong}}
{{Sparker|p=9|type=domino|strength=strong}}
{{seminatural}}
{{seminatural}}
[[Category:Extendable oscillators]]
__NOTOC__

Latest revision as of 11:06, 14 April 2025

Snacker
2o16b2o$bo16bob$bobo12bobob$2b2o12b2o2b$7bo4bo7b$5b2ob4ob2o5b$7bo4bo7b $2b2o12b2o2b$bobo12bobob$bo16bob$2o16b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 3 LOOP 9 THUMBSIZE 4 WIDTH 800 HEIGHT 480 ]]
View animated image
View static image
Pattern type Oscillator
Number of cells 40
Bounding box 20 × 11
Period 9 (mod: 9)
Heat 26.2
Volatility 0.77 | 0.77
Kinetic symmetry +e
Discovered by Mark Niemiec
Year of discovery 1972

Snacker is a period-9 oscillator in which four eater 1s hassle a pentadecathlon, found by Mark Niemiec in 1972.[1][2]

The snacker produces domino sparks, which can be used for a p36 toad hassler. In other cases the sparks are largely inaccessible due to the eaters; however, the snacker can be extended by putting more pentadecathlons as shown below, or an alternative eater which is also used in L200 can be used, and so a more accessible period 9 domino spark can be obtained -- this method was used to create the first period-18 oscillator, 117P18. Stronger domino sparkers are also known, for example 50P9 and 104P9.

This oscillator first appeared semi-naturally in the form stabilized by fourteeners instead of eater 1s in March 2016.[3]

x = 34, y = 11, rule = B3/S23 2o$bo$bobo25b2o$2b2o23bo2bo$7bo4bo14b3o$5b2ob4ob2o3bo4bo6b3o$7bo4bo3b 2ob4ob2o3bo3bo$2b2o14bo4bo6b3o$bobo23b3o$bo25bo2bo$2o27b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 3 LOOP 9 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 320 WIDTH 600 ]]
Additional pentadecathlons can be added to extend snacker, as used in 117P18. The alternate stabilization on the right was found by Dean Hickerson in April 1998
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

See also

References

  1. ↑ Robert Wainwright (March 1973). Lifeline, vol 9, page 3.
  2. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  3. ↑ Maia Karpovich (March 28, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
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