Ship in a bottle

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Ship in a bottle
x = 18, y = 18, rule = B3/S23 4b2o6b2o$3bo2bo4bo2bo$3bobo6bobo$b2o2b3o2b3o2b2o$o6bo2bo6bo$ob2o10b2o bo$bobo10bobo$3b2o3b2o3b2o$7bobo$7b2o$3b2o8b2o$bobo10bobo$ob2o10b2obo $o6bo2bo6bo$b2o2b3o2b3o2b2o$3bobo6bobo$3bo2bo4bo2bo$4b2o6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 3 ZOOM 24 GPS 4 LOOP 16 ]]
Pattern type Oscillator
Number of cells 86
Bounding box 18 × 18
Period 16
Mod 8
Heat 45
Volatility 0.70
Strict volatility 0.12
Discovered by Bill Gosper
Year of discovery 1994

Ship in a bottle is a period-16 oscillator found by Bill Gosper on August 7, 1994.[1] If the ship is removed while not being interacted with, it becomes a bottle. If a pond is placed inside instead, it becomes pond in a bottle.[2]

x = 18, y = 18, rule = B3/S23 4b2o6b2o$3bo2bo4bo2bo$3bob2o4b2obo$b2o2bob4obo2b2o$o16bo$ob2o10b2obo$ b2o12b2o$3bo4b2o4bo$3bo3bo2bo3bo$3bo3bo2bo3bo$3bo4b2o4bo$b2o12b2o$ob2o 10b2obo$o16bo$b2o2bob4obo2b2o$3bob2o4b2obo$3bo2bo4bo2bo$4b2o6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 14 AUTOSTART GPS 4 ]]
A related pattern, pond in a bottle uses the pond as a rock
(click above to open LifeViewer)

A 49-glider synthesis of this oscillator was found by Jeremy Tan on April 18, 2019.[3] A reduction to 48 gliders was found later by constructing a 22-bit constellation[4] with eight gliders.[5] In April 2023, the same 22-bit constellation was constructed with 7 gliders, reducing the glider cost of the ship in a bottle to 47 gliders.[6] A 45-glider synthesis was found by KtT in November 2023.[7][8]

See also

References

  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. Pond in a bottle at Adam P. Goucher's Catagolue
  3. Jeremy Tan (April 18, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. xs22_y133z33w356x33zy133 at Adam P. Goucher's Catagolue
  5. Ship in a bottle (archived copy)
  6. shinjuku (#4045718382) (April 2, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  7. KtT (November 4, 2023). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  8. shinjuku (#5460047563) (November 4, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.

External links