Period-44 MWSS gun

Period-44 MWSS gun is a gun discovered by Dieter Leithner in April 1997, in a somewhat larger form. This was the smallest known gliderless MWSS gun until the construction of the p46 gliderless MWSS gun based on Tanner's p46 in 2017.

Period-44 MWSS gun
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Pattern type Gun
Number of cells 155
Bounding box 50×40
Period 44
Barrels 1
Discovered by Dietrich Leithner
Year of discovery 1997

The p44 MWSS gun is based on the p44 pi-heptomino hassler discovered by David Buckingham in early 1992, shown here in an improved form found in January 2005 by Jason Summers using a new larger but thinner p4 toad-sucker sparker by Nicolay Beluchenko. A glider shape appears in this gun for three consecutive generations, but always as part of a larger cluster, so even a purist would regard this gun as gliderless.

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