Krake: Difference between revisions
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frequency class 23.4 |
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|by = 5 | |by = 5 | ||
|fc = 23.4 | |fc = 23.4 | ||
|symmetry = -e | |||
|rulemin = B/S23 | |rulemin = B/S23 | ||
|rulemax = B378/S012345678 | |rulemax = B378/S012345678 | ||
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|rle = true | |rle = true | ||
|apgcode = xs13_31ege13 | |apgcode = xs13_31ege13 | ||
|niemiecid = 13.171 | |||
|pentadecathlonid = 13.44 | |||
|viewerconfig = [[ ZOOM 48 ]] | |||
}} | }} | ||
'''Krake''' is a {{slcells|13}} | '''Krake'''{{refn|group=note|The origin of the name is not known. However, krake means octopus in German and the name seems to have first appeared in [[Achim Flammenkamp's census]] no later than 2004.}} is a {{slcells|13|text=13-cell}} [[still life]]. | ||
The krake is sometimes used when two [[eater 1]]s need to be placed close together. | |||
== [[Glider synthesis]] == | == Construction == | ||
{{ | Krake is known to be [[Glider synthesis|constructible]] with {{gliders|4|text=4 gliders}}.<ref name="niemiec" /> | ||
{| style="margin:auto;width:300px" | |||
|{{EmbedViewer | |||
|rle = x = 35, y = 17, rule = B3/S23 | |||
31bo$30bobo$20bo9bobo$bo12bo5bobo5bobobobo$2bo10bo6b2o6b2o3b2o$3o10b3o9$7b2o$6bobo$8bo! | |||
|viewerconfig = #C [[ THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 1 T 12 PAUSE 3 T 44 PAUSE 2 LOOP 45 ]] | |||
|position = center | |||
|caption = A 4G synthesis<ref name="niemiec" /><ref name="post12276" /><!-- row 6 col 6 --> | |||
}} | |||
|- | |||
|{{EmbedViewer | |||
|rle = x = 37, y = 59, rule = B3/S23 | |||
23bo$21b2o$22b2o5bo$29bobo$29b2o7$33bo$32bobo$32bobo$30bobobobo$30b2o | |||
3b2o6$20bo$19b2o$19bobo4b2o$3o23bobo$2bo23bo$bo4$5bo$3bobo$4b2o$18bobo | |||
$18b2o$19bo$33bo$32bobo$11bo20bobo$9bobo18bobobobo$10b2o18b2o3b2o9$18b | |||
2o$17b2o$19bo5$3b3o$5bo$4bo! | |||
|viewerconfig = #C [[ HEIGHT 650 THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 1 T 12 PAUSE 3 T 20 PAUSE 1 T 43 PAUSE 2 LOOP 44 ]] | |||
|position = center | |||
|caption = Two 5G syntheses<ref name="niemiec" /> | |||
}} | |||
|} | |||
== Occurrence == | |||
{{related|List of common still lifes|List of still lifes with 13 cells}} | |||
{{CatagolueSLRarity | |||
|population = 13 | |||
|absrank = 143rd | |||
|abslesscommonthan = cis-barge with tail | |||
|absmorecommonthan = ship tie snake | |||
|poprank = 11th | |||
|poplesscommonthan = house siamese shillelagh | |||
|popmorecommonthan = bookend siamese shillelagh | |||
|date = May 28, 2023 | |||
}} | |||
There are two collisions in the [[octo3obj database]] with krake in the ash.{{refn|group=note|Headerless RLEs of the collisions are {{headerlessRLE|b2o5b3o2bo$o2bo8b2o$b2o9bobo5$3bo$3bo$3bo!}} (11 escaping gliders, final population 472) and {{headerlessRLE|5b2ob2o$5b2ob2o4$6b2ob2o$b2o3b2ob2o$o2bo$b2o$4b3o$4bo$5bo!}} (3 escaping gliders, final population 112).}} | |||
== Notes == | |||
<references group=note /> | |||
== See also == | == See also == | ||
* [[Test tube baby]], two eater 1s placed farther apart by one cell, making it a period-2 oscillator | |||
* [[Hungry hat]] | * [[Hungry hat]] | ||
* [[Aries]] | * [[Aries]] | ||
== References == | |||
<references> | |||
<ref name="niemiec">{{LinkNiemiec|p1-13.htm|The 240 thirteen-bit still-lifes|rle=13/13-171.rle|nobullet=nobullet}}</ref> | |||
<ref name="post12276">{{LinkForumThread | |||
|format = ref | |||
|p = 12276 | |||
|title = 4 glider syntheses | |||
|author = BobShemyakin | |||
|date = June 15, 2014 | |||
}}</ref> | |||
</references> | |||
== External links == | == External links == | ||
{{LinkCatagolue|xs13_31ege13}} | * {{LinkCatagolue|xs13_31ege13}} | ||
{{LinkNiemiec|p1-13.htm| | * {{LinkPentadecathlonObject|13.44|archivedate=20221102223525}} | ||
* {{LinkNiemiec|p1-13.htm|The 240 thirteen-bit still-lifes|rle=13/13-171.rle}} | |||
__NOTOC__ | |||
Latest revision as of 13:37, 9 August 2024
| Krake | |||||||||
| View static image | |||||||||
| Pattern type | Strict still life | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 13 | ||||||||
| Bounding box | 7 × 5 | ||||||||
| Frequency class | 23.4 | ||||||||
| Static symmetry | -e (D2_+2) | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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Krake[note 1] is a 13-cell still life.
The krake is sometimes used when two eater 1s need to be placed close together.
Construction
Krake is known to be constructible with 4 gliders.[1]
| ||
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Occurrence
Krake is the 143rd most common still life on Adam P. Goucher's Catagolue, being less common than cis-barge with tail but more common than ship tie snake. Among all still lifes with 13 cells, it is the 11th most common, being less common than house siamese shillelagh but more common than bookend siamese shillelagh.[3] There are two collisions in the octo3obj database with krake in the ash.[note 2]
Notes
- ↑ The origin of the name is not known. However, krake means octopus in German and the name seems to have first appeared in Achim Flammenkamp's census no later than 2004.
- ↑ Headerless RLEs of the collisions are b2o5b3o2bo$o2bo8b2o$b2o9bobo5$3bo$3bo$3bo! (11 escaping gliders, final population 472) and 5b2ob2o$5b2ob2o4$6b2ob2o$b2o3b2ob2o$o2bo$b2o$4b3o$4bo$5bo! (3 escaping gliders, final population 112).
See also
- Test tube baby, two eater 1s placed farther apart by one cell, making it a period-2 oscillator
- Hungry hat
- Aries
References
- ↑ 1.0 1.1 1.2 The 240 thirteen-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 13/13-171.rle)
- ↑ BobShemyakin (June 15, 2014). 4 glider syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on May 28, 2023.
External links
- Krake at Adam P. Goucher's Catagolue
- 13.44 at Heinrich Koenig's Game of Life Object Catalogs
- The 240 thirteen-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 13/13-171.rle)