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{{Spaceship
{{Spaceship
|name         = Turtle
|name             = Turtle
|pname       = turtle
|pname           = turtle
|c           = 44
|c               = 44
|bx           = 13
|bx               = 13
|by           = 12
|by               = 12
|dir         = Orthogonal
|dir             = Orthogonal
|p           = 3
|p               = 3
|m           = 3
|m               = 3
|s           = c/3
|s               = c/3
|h           = 56
|z                = c/3
|discoverer   = Dean Hickerson
|h               = 56
|discoveryear = 1989
|symmetry        = -e
|rulemin     = B3/S23
|discoverer       = Dean Hickerson
|rulemax     = B3678/S23
|discoveryear     = 1989
|rulespecial  = [[Conway's Game of Life|Conway Life]], [[HighLife]]
|rulemin         = B3/S23
|life105      = true
|rulemax         = B3678/S23
|life106      = true
|isorulemin      = B3-ek/S2-n3-cen
|plaintext   = true
|isorulemax      = B34ceqt5aknry678/S234ceitwz5-cij6ekn
|rle         = true
|synthesis        = 220
|animated     = true
|plaintext       = true
|viewerconfig = #C [[ TRACKLOOP 3 -1/3 0 THUMBSIZE 3 GPS 3 HEIGHT 200 WIDTH 600 ]]
|rle             = true
|animated         = true
|viewerconfig     = #C [[ TRACKLOOP 3 -1/3 0 THUMBSIZE 3 ZOOM 27 GPS 3 HEIGHT 480 WIDTH 600 ]]
|pentadecathlonid = 44P3H1V0.2
|apgcode          = xq3_3u0228mc53bgzof0882d6koq1
|eppsteinid      = 11302
}}
}}
'''Turtle''' is an orthogonal [[c/3 orthogonal|c/3]] [[spaceship]] found by [[:Category:Patterns found by Dean Hickerson|Dean Hickerson]] in August [[:Category:patterns found in 1989|1989]]. It is one of the only [[non-standard spaceship]]s that also works in the [[HighLife]] rule. The [[polyomino#domino|domino]] [[spark]] that the turtle produces at its back was essential in the creation of the first [[sawtooth]] pattern, [[sawtooth 1212]].
'''Turtle''' is an [[c/3 orthogonal]] [[spaceship]] found by [[Dean Hickerson]] in August {{year|1989}}. It is one of few [[non-standard spaceship]]s that also works in the {{rl|HighLife}} rule. The [[domino spark]] that the turtle produces at its back was essential in the creation of the first [[sawtooth]] pattern, [[sawtooth 1212]].


==Tagalong==
== Tagalongs ==
In April [[:Category:Patterns found in 1992|1992]], [[David Bell]] found an extensible [[tagalong]] for the turtle.
{{EmbedViewer
[[Image:Turtle_extensible_tagalong.png|framed|center|An extensible tagalong for the turtle<br />{{JavaRLE|turtlewithtagalong}}]]
|rle          = x = 22, y = 11, rule = B3/S23
b3o7bo$b2o2bob2ob2o$3b3o4bo$bo2bobo3bo$o4bo4bo3bo$o4bo4bo3bobo$bo2bobo3bo4bo2bo$3b3o4bo5bobob2o$b2o2bob2ob2o6b2o$b3o7bo4b3o$16b3o!
|viewerconfig = #C [[ TRACKLOOP 3 -1/3 0 THUMBSIZE 2 ZOOM 8 GPS 3 WIDTH 670 AUTOSTART ]]
|position    = center
|caption      = The smallest tagalong of the turtle
|apgcode      = xq3_gb35cm8220u3wgz1qok6d2880fow12lgu844zyc111
|style        = width:300px;
}}
In April {{year|1992}}, [[David Bell]] found an [[extensible]] [[tagalong]] for the turtle.
{{EmbedViewer
|pname        = turtletagalong
|viewerconfig = #C [[ TRACKLOOP 3 -1/3 0 THUMBSIZE 2 ZOOM 8 GPS 3 WIDTH 670 AUTOSTART ]]
|position    = center
|caption      = An extensible turtle tagalong
|apgcode      = xq3_gb35cm8220u3y7g888y3gg44gy2ggosgy6gz1qok6d2880fow12698wb32x78aooa34x66aggg702w2698wb35oe93506044a2zyf11y61yh11
|style        = width:300px;
}}
 
== Glider synthesis ==
On December 3, {{year|2020}}, [[Goldtiger997]] posted a final step for a [[glider synthesis]] of this spaceship.<ref name="post114036" /> The following day, Goldtiger997 found a synthesis for the final base constellation, giving a {{gliders|241}} synthesis of the spaceship.<ref name="post114209" />
 
Later reductions of the synthesis cost included
a 240G synthesis (April 26, 2021),<ref name="j1210329861" />
a 237G synthesis (May 15, 2021),<ref name="j1264301791" />
a 228G synthesis (August 27, 2021),<ref name="j1539695062" />
a 227G synthesis (October 4, 2021),<ref name="j1646671448" />
a 226G synthesis (August 21, 2022),<ref name="j2911640928" />
a 225G synthesis (November 28, 2022).<ref name="j3385551876" />
 
{{AS OF|June 4, {{year|2026}}}}, cheapest known glider construction of the turtle uses {{gliders|220|text=220 gliders}}.<ref name="catagolue_object" />
 
== See also ==
* [[25P3H1V0.1]]
* [[Brain]]
* [[Dart]]
* [[Wasp]]


==See also==
== References ==
*[[25P3H1V0.2]]
<references>
*[[Brain]]
<ref name="catagolue_object">{{LinkCatagolue|xq3_3u0228mc53bgzof0882d6koq1|style=nobullet}}</ref>
*[[Dart]]
<ref name="j1210329861">{{CiteCatagolueJob|job=1210329861|date=April 26, 2021}}</ref>
*[[Wasp]]
<ref name="j1264301791">{{CiteCatagolueJob|job=1264301791|date=May 15, 2021}}</ref>
<ref name="j1539695062">{{CiteCatagolueJob|job=1539695062|date=August 27, 2021}}</ref>
<ref name="j1646671448">{{CiteCatagolueJob|job=1646671448|date=October 4, 2021}}</ref>
<ref name="j2911640928">{{CiteCatagolueJob|job=2911640928|date=August 21, 2022}}</ref>
<ref name="j3385551876">{{CiteCatagolueJob|job=3385551876|date=November 28, 2022}}</ref>
<ref name="post114036">{{LinkForumThread
|format = ref
|title  = Re: Small Spaceship Syntheses
|p      = 114036
|author = Goldtiger997
|date  = December 3, 2020
}}</ref>
<ref name="post114209">{{LinkForumThread
|format = ref
|title  = Re: Small Spaceship Syntheses
|p      = 114209
|author = Goldtiger997
|date  = December 4, 2020
}}</ref>
</references>


==External links==
== External links ==
{{LinkWeisstein|Turtle.html}}
* {{LinkLexicon|lex_t.htm#turtle}}
{{LinkLexicon|lex_t.htm#turtle}}
<!-- * {{LinkEppstein|11302|patternname=The Turtle (glider 11302)}} The Turtle (glider 11302) at David Eppstein's Glider Database http://fano.ics.uci.edu/ca/gliders/g11302.html -->
{{LinkEppstein|11302|patternname=The Turtle (glider 11302)}}
* {{LinkEppsteinRule|rule=b3s23|rulename=Life (B3/S23)|archivedate=20160309235206}} <!-- The Turtle (glider 11302), size 10x12, speed c/3, orthogonal -->
{{LinkCatagolue|xq3_3u0228mc53bgzof0882d6koq1}}
* {{LinkPentadecathlonObject|44P3H1V0.2}}
* {{LinkCatagolue|xq3_3u0228mc53bgzof0882d6koq1}}
__NOTOC__

Latest revision as of 13:39, 4 June 2026

Turtle
b3o7bo$b2o2bob2ob2o$3b3o4bob$bo2bobo3bob$o4bo4bob$o4bo4bob$bo2bobo3bob $3b3o4bob$b2o2bob2ob2o$b3o7bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 3 -1/3 0 THUMBSIZE 3 ZOOM 27 GPS 3 HEIGHT 480 WIDTH 600 ]]
View animated image
View static image
Pattern type Spaceship
Number of cells 44
Bounding box 13 × 12
Direction Orthogonal
Period 3 (mod: 3)
Speed c/3 | c/3
Heat 56
Kinetic symmetry -e
Discovered by Dean Hickerson
Year of discovery 1989

Turtle is an c/3 orthogonal spaceship found by Dean Hickerson in August 1989. It is one of few non-standard spaceships that also works in the HighLife rule. The domino spark that the turtle produces at its back was essential in the creation of the first sawtooth pattern, sawtooth 1212.

Tagalongs

x = 22, y = 11, rule = B3/S23 b3o7bo$b2o2bob2ob2o$3b3o4bo$bo2bobo3bo$o4bo4bo3bo$o4bo4bo3bobo$bo2bobo3bo4bo2bo$3b3o4bo5bobob2o$b2o2bob2ob2o6b2o$b3o7bo4b3o$16b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ TRACKLOOP 3 -1/3 0 THUMBSIZE 2 ZOOM 8 GPS 3 WIDTH 670 AUTOSTART ]]
The smallest tagalong of the turtle
(click above to open LifeViewer)
Catagolue: here

In April 1992, David Bell found an extensible tagalong for the turtle.

x = 70, y = 11, rule = b3/s23 19b2o10bo21b2o15b$b3o7bo18b2o9b3o14bo11b$b2o2bob2ob2o5b2o2bo6b5o7bo10b 2o2bo2b3o7bob$3b3o4bo5bo10bo6bo3b2o4bo5bo6bobo2bobob2o2b$bo2bobo3bo4b 2o4b3o3bobo2b2o4b3o3bobo2b2o4b2o2bobo2bo3b2o$o4bo4bo3bo2bo3b2o4bo5bo 10bo6bo3b3o2b3o7b$o4bo4bo12bo10b2o2bo6b5o10bo9b$bo2bobo3bo13b3o20b2o 21b$3b3o4bo25b2o10bo21b$b2o2bob2ob2o58b$b3o7bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ TRACKLOOP 3 -1/3 0 THUMBSIZE 2 ZOOM 8 GPS 3 WIDTH 670 AUTOSTART ]]
An extensible turtle tagalong
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

Glider synthesis

On December 3, 2020, Goldtiger997 posted a final step for a glider synthesis of this spaceship.[1] The following day, Goldtiger997 found a synthesis for the final base constellation, giving a 241-glider synthesis of the spaceship.[2]

Later reductions of the synthesis cost included a 240G synthesis (April 26, 2021),[3] a 237G synthesis (May 15, 2021),[4] a 228G synthesis (August 27, 2021),[5] a 227G synthesis (October 4, 2021),[6] a 226G synthesis (August 21, 2022),[7] a 225G synthesis (November 28, 2022).[8]

As of June 4, 2026, cheapest known glider construction of the turtle uses 220 gliders.[9]

See also

References

  1. ↑ Goldtiger997 (December 3, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  2. ↑ Goldtiger997 (December 4, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  3. ↑ shinjuku (#1210329861) (April 26, 2021). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  4. ↑ shinjuku (#1264301791) (May 15, 2021). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  5. ↑ shinjuku (#1539695062) (August 27, 2021). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  6. ↑ shinjuku (#1646671448) (October 4, 2021). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  7. ↑ shinjuku (#2911640928) (August 21, 2022). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  8. ↑ shinjuku (#3385551876) (November 28, 2022). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  9. ↑ xq3_3u0228mc53bgzof0882d6koq1 at Adam P. Goucher's Catagolue
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