Ellison p4 HW emulator

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Ellison p4 HW emulator
x = 24, y = 9, rule = B3/S23 11b2o$4bo3bo6bo3bo$3bobo12bobo$3bobo12bobo$2obobob10obobob2o$2obo16bob 2o$3bo16bo$3bobo4b2obo4bobo$4b2o4bob2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 2 ZOOM 16 LOOP 4 ]]
Pattern type Oscillator
Family Emulator
Number of cells 54
Bounding box 24×9
Period 4
Mod 4
Heat 31
Volatility 0.60
Strict volatility 0.53
Discovered by Scot Ellison
Year of discovery 2010

Ellison p4 HW emulator (where "HW" stands for heavyweight) is a period-4 oscillator that was found by Scot Ellison in April 2010. Numerous variants of this oscillator have been found, including some producing different types of sparks, as shown below.

Gallery

x = 20, y = 9, rule = B3/S23 11b2o$4bo3bo5bob2o$3bobo11bo$3bobo9b2o$2obobob8o2b3o$2obo12bo2bo$3bo 13b2o$3bobo4b2o$4b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Ellison p4 HW emulator hybrid as seen in the period-36 glider gun,[1]
with one half resembling a more traditional heavyweight emulator
(click above to open LifeViewer)
RLE: here Plaintext: here

Blocked p4s

x = 23, y = 14, rule = B3/S23 11bo$4bo3bo5bo3bo$3bobo11bobo$3bobo11bobo$2obobob9obobob2o$2obo15bob2o $3bo15bo$3bobo4bobo4bobo$4bobob3ob3obobo$2bobob2o7b2obobo$2b2o5b2ob2o 5b2o$10bobo$10bobo$11bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Blocked p4-1 acting as a middleweight emulator,
found by Adam P. Goucher on April 5, 2010
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 23, y = 11, rule = B3/S23 11bo$4bo3bo5bo3bo$3bobo11bobo$3bobo11bobo$2obobob9obobob2o$2obo15bob2o $3bo15bo$3bobo4bobo4bobo$4b2o3bob2o4b2o$9bo$8b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Stator reduction of blocked p4-1,
by Matthias Merzenich
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 22, y = 8, rule = B3/S23 4bo3bo4bo3bo$3bobo10bobo$3bobo10bobo$2obobob8obobob2o$2obo14bob2o$3bo 14bo$3bobo4b2o4bobo$4b2o4b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Blocked p4-2 acting as a lightweight emulator,
by Goucher
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 21, y = 9, rule = B3/S23 4bo3bobobo3bo$3bobo9bobo$3bobo9bobo$2obobob7obobob2o$2obo13bob2o$3bo 13bo$3bobo4bo4bobo$4b2o3bobo3b2o$10bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Blocked p4-3, also known as an
"underweight emulator",[note 1] by Goucher.
Used in p124 lumps of muck hassler,
p32 blinker hassler 1 and 2, and p44 traffic light hassler.
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 19, y = 9, rule = B3/S23 11bo$4bo3bo4bob2o$3bobo10bo$3bobo8b2o$2obobob7o2b3o$2obo11bo2bo$3bo12b 2o$3bobo$4b2o3b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Blocked p4-4, a middleweight emulator hybrid by Merzenich.
Used in the p48 pi-heptomino hassler and the pi orbital.
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 18, y = 10, rule = B3/S23 4bo3bo3bob2o$3bobo9bo$3bobo7b2o$2obobob6o2b3o$2obo10bo2bo$3bo11b2o$3bo bo5bo$4b2o4b2o$10b2o$10bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Blocked p4-5, a lightweight emulator hybrid by Merzenich.
Also an uncommon example of a toad being used as an induction coil.
(click above to open LifeViewer)
RLE: here Plaintext: here

T-noses

x = 25, y = 11, rule = B3/S23 11b3o2$10bo3bo$4bo3bo7bo3bo$3bobo13bobo$3bobo13bobo$2obobob11obobob2o$ 2obo17bob2o$3bo17bo$3bobo4b2ob2o4bobo$4b2o4b2ob2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Blocked p4 T-nose, by Goucher
(click above to open LifeViewer)
RLE: here Plaintext: here
x = 21, y = 13, rule = B3/S23 11b3o2$10bo3bo$4bo3bo6bob2o$3bobo12bo$3bobo10b2o$2obobob9o2b3o$2obo13b o2bo$3bo14b2o$3bobo4bobo$4b2o4b2obo$13bo$13b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Blocked p4 T-nose hybrid, by Merzenich
(click above to open LifeViewer)
RLE: here Plaintext: here

Notes

  1. Although a so-called "underweight spaceship" does not produce any sparks, the blocked p4-3 is sometimes referred to as an "underweight emulator" due to the shortening of the oscillator by an additional cell beyond the lightweight version. The three-dot spark has also been referred to as the "obobo" spark[2] due to its RLE representation, in analogy to the obo spark.

References

  1. A plethora of p4 hasslers at Game of Life News. Posted by Adam P. Goucher on January 3, 2011.
  2. David Raucci (October 23, 2021). Message in #cgol on the Conwaylife Lounge Discord server

External links