Block-laying switch engine

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Block-laying switch engine
18bo10b$b3o8bo5bo10b$o3bo6bo7bo9b$b2o9b4o2b2o9b$3b2ob2o9b3o9b$5b2o11bo bo8b$19bo7b2o$19bo7b2o11$7b2o20b$7b2o20b7$15b2o12b$15b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 600 THUMBSIZE 3 ZOOM 12 X 5 Y 0 GPS 12 TRACKLOOP 576 -1/12 -1/12 ]]
Pattern type Puffer
Number of cells 43
Bounding box 29 × 28
Frequency class 19.6
Direction Diagonal
Period 288
Speed c/12
Discovered by Charles Corderman
Year of discovery 1971

The block-laying switch engine (or block-making switch engine) is a puffer that was found by Charles Corderman.[1] It consists of a switch engine reacting with blocks to create an infinite number of new blocks (eight new blocks every 288 generations).

The blocks left behind by the block-laying switch engine

Because of its easy construction (see the predecessor below), it has appeared in some superlinear growth patterns including mosquito 1 and mosquito 2.[2]

Occurrence

The block-laying switch engine is the sixty-fourth most common object on Adam P. Goucher's Catagolue. It is the most common naturally-occurring pattern that exhibits infinite growth, being more common than the glider-producing switch engine.[3]

11bobo2b$2o8bo5b$2o9bo2bob$13b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ]]
A simple predecessor of the block-laying switch engine
(click above to open LifeViewer)
RLE: here Plaintext: here

References

  1. ↑ Robert Wainwright (December 1971). Lifeline, vol 4, page 2.
  2. ↑ "Mosquito 1". The Life Lexicon. Stephen Silver. Retrieved on June 1, 2009.
  3. ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.