p43 Snark loop

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p43 Snark loop
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Pattern type Oscillator
Oscillator type Relay
Number of cells 228
Bounding box 65×65
Period 43
Mod 43
Heat 66.05
Volatility 0.81
Strict volatility 0.81
Discovered by Mike Playle
Year of discovery 2013

The p43 Snark loop is a period-43 oscillator made from Snark reflectors. It is the smallest of an infinite family of Snark-based adjustable glider loops that can have any period from 43 up.

There are much smaller glider loops containing four gliders, with a total signal path length of 216+8n and therefore adjustable to any period of the form 54+2n. However, this is the smallest loop that can contain eight gliders, which is a requirement for universal adjustability.

A 226-glider synthesis of this oscillator was discovered by Jeremy Tan on June 9, 2019.[1]


  1. Jeremy Tan (June 9, 2019). p43 snark loop synthesis (discussion thread) at the ConwayLife.com forums

External links