p44 pi-heptomino hassler

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p44 pi-heptomino hassler
p44 pi-heptomino hassler image
Pattern type Oscillator
Number of cells 102
Bounding box 31×44
Period 44
Mod Unknown
Heat 93.3
Volatility 0.91
Strict volatility 0.80
Discovered by David Buckingham
Year of discovery 1992

P44 pi-heptomino hassler is a period 44 oscillator discovered by David Buckingham on April 2, 1992.[1] It was improved to the form shown here by Noam Elkies in April 1996. The oscillator consists of two pi-heptominos being hassled by two heavyweight emulators and four blocks. Buckingham used two copies of this oscillator to make the first period 44 glider gun. This became obsolete in October 1996 when Buckingham found a gun that only used one copy of the oscillator. In 1994 Dean Hickerson found a way to double the oscillator's period by adding two molds, creating the first period 88 oscillator.

Image gallery

The original form of this oscillator
RLE: here
Buckingham's original period 44 gun and its subsequent improvement, as well as a small middleweight spaceship gun found by Dietrich Leithner
Download RLE: click here
The first period 88 oscillator
RLE: here

See also


  1. Dean Hickerson's oscillator stamp collection.

External links