Period-690 glider gun

Period-690 glider gun is a compound true period-690 glider gun found by Noam Elkies in July 1996. It is composed of a p30 queen bee shuttle pair and a p46 twin bees shuttle whose sparks occasionally react with each other. This is a very compact gun for such a high period and is used in many patterns requiring sparse glider streams.

Period-690 glider gun
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Pattern type Gun
Number of cells 62
Bounding box 52×25
Period 690
Barrels 1
Discovered by Noam Elkies
Year of discovery 1996
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