p156 Hans Leo hassler

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p156 Hans Leo hassler
x = 33, y = 40, rule = B3/S23 15b2o4b2o4b2o$14bo2bobo4bobo2bo$14b3o10b3o$17b2o6b2o$16bo2b6o2bo$16b2o 8b2o2$13bo$8b4o3bo11bo$11bo3bo4bo4bo3b4o$15bo3b3o3bo3bo$12bo12bo$13b2o 13bo$26b2o2$30b2o$30bo$28bobo$28b2o$13b3o$13bobo$3b2o8b3o$2bobo$2bo$b 2o2$5b2o$4bo7bo5b2o$7bo3b3o6bo$3bo3bo2b5o2bo$4o3bo2b5o2bo3bo$5bo6bo4bo 3b4o$19bo$10b2o$5b2obo4bob2o$5bo10bo$6b2o6b2o$3b3o2b6o2b3o$3bo2bo8bo2b o$4b2o10b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 13 ZOOM 6 LOOP 156 ]]
Pattern type Oscillator
Number of cells 157
Bounding box 33×40
Period 156
Mod 78
Heat 130.3
Volatility 0.84
Strict volatility 0.39
Discovered by Noam Elkies
Year of discovery 1995

P156 Hans Leo hassler[note 1] is a period-156 traffic light hassler discovered by Noam Elkies on January 4, 1995,[1] and was the first period 156 oscillator to be found. It features two crowns turning a traffic light into a B-heptomino, and two eater 1s that then turn the B-heptomino back into a traffic light.

Elkies also found that the oscillator has several simple variants with an alternative phase of one of the crowns, leading to a period 144 version. It can even be made to be period 96 with figure eights, or period 132 with two copies of unix.

On November 10, 2019, Entity Valkyrie found a period 288 version of this oscillator.[2]

Image gallery

A period 132 version of the Hans Leo hassler
Download RLE: click here
A period 144 version of the Hans Leo hassler
RLE: here

See also


  1. Dean Hickerson's oscillator stamp collection. Retrieved on April 16, 2020.
  2. Entity Valkyrie (November 10, 2019). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums


  1. The name could be a reference to Hans Leo Hassler, a famous German composer.

External links