Snark

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Snark
Snark image
Pattern type Stable reflector
Number of cells 49
Angle 90°
Repeat time 43
Discovered by Mike Playle
Year of discovery 2013

The snark is a 90° stable glider reflector, made up of two eaters, a block and an unnamed 31-cell still life. It is currently the fastest and the smallest 90° stable glider reflector, both in terms of the population and the bounding box.

It has been the outcome of the challenge, set by Adam P. Goucher in 2010, to complement a pattern, found by Dietrich Leithner about 1998.

Given its small recovery time, the snark made oscillators of previously unknown periods of 43 and 53 trivial.