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Bi-gun image
Pattern type Gun
Number of cells 44
Bounding box 56×17
Period 46
Barrels 2
Discovered by Bill Gosper
Year of discovery Unknown

The bi-gun is a double-barreled glider gun that was found by Bill Gosper in the early 1970's.[1] Much like his Gosper glider gun works by colliding two queen bee shuttles together, the bi-gun works by colliding two twin bees shuttles together. Dietrich Leithner discovered that it can be synthesised with 12 gliders.


  1. Alan Hensel's pattern collection.

External links