Turtle

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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 ]]
Pattern type Spaceship
Number of cells 44
Bounding box 13 × 12
Direction Orthogonal
Period 3
Mod 3
Speed c/3
Speed (unsimplified) c/3
Heat 56
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)
Catagoluehere

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
Catagoluehere

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 March 8, 2023, cheapest known glider construction of the turtle uses 225 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

External links