Loading dock

From LifeWiki
Jump to navigation Jump to search
Loading dock
x = 9, y = 8, rule = B3/S23 4bo$2b3o$bo3b2o$ob2o3bo$bo3b2obo$2b2o3bo$4b3o$4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 2 ZOOM 24 LOOP 3 ]]
Pattern type Oscillator
Oscillator type Billiard table
Number of cells 22
Bounding box 9×8
Period 3
Mod 3
Heat 2.7
Volatility 0.17
Strict volatility 0.17
Rotor type Six Ls
Discovered by David Buckingham
Year of discovery 1972

Loading dock is a period-3 oscillator that was found by David Buckingham in September 1972.[1]

It has a stator variant with larger population but smaller bounding box, named six Ls due to consisting of six L-tetrominoes (tails), as shown below.

x = 7, y = 8, rule = B3/S23 3bo$b3o2bo$o3b3o$3o$4b3o$3o3bo$o2b3o$3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 2 ZOOM 24 LOOP 3 AUTOSTART ]]
six Ls (click above to open LifeViewer)
RLE: here Plaintext: here
Catagoluehere

Synthesis

A 14-glider synthesis for loading dock and a 20-glider synthesis for six Ls were found by Jeremy Tan on March 29, 2019 based on soups submitted to Catagolue.[2] The latter was improved to 18 gliders by Mark Niemiec two days later.[3]

In December 2020, GUYTU6J found a 13-glider synthesis of a stator variant of this oscillator[4] based on a suggestion from gmc_nxtman dating to November 2015.[5]

References

  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. Jeremy Tan (March 29, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  3. Mark Niemiec (March 31, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. GUYTU6J (December 27, 2020). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  5. gmc_nxtman (November 17, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums

External links

  • 22P3.92 at Heinrich Koenig's Game of Life Object Catalogs
  • 24P3.122 at Heinrich Koenig's Game of Life Object Catalogs