Period-156 glider gun

Period-156 glider gun is a glider gun with 8 barrels that was found by Jason Summers on October 28, 2004. The oscillator Jason's p156 is basically this gun with all glider streams blocked. In terms of its 36 cells it is the same size as the Gosper glider gun, but the Simkin glider gun is still smaller at 29 cells. It is capable of pulling beacons. The gun first appeared semi-naturally in January 2015 in a soup found by Dongook Lee using apgsearch, making it the first semi-natural gun. A 16-glider synthesis was discovered for this gun by Goldtiger997 on June 2, 2019, which was improved to 14 gliders the next day by Oscar Cunningham. A suppressed form of the gun appeared semi-naturally on Sep...View all