Period-33 glider gun

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Period-33 glider gun
x = 57, y = 37, rule = B3/S23 b2o3b2o16bo$o4bobo15bobo$bo3b2o17bo$2bob2o19bo4b2o$8b2o15bo4b3o$8b2o 14b2o5b3o$23bo8b3o$23bo9bo$4bo19bo2b2o3bo$11b2o14b2o3bobo$4b4ob2ob2o 19b2o10b2o$5b2o4bo11bo8b3o10bobo5b2o$6bo11bo4b2o8bo13bo5bobo$16b2ob2ob 3o21bob2o5bo$17b2o5bo21bobo$45b2o2bob3obo$44bo3bo3bo3bo$36bo8b3o5bobo$ 25b2o8b3o10b6o$24b3o8b2o10bo5bo$22b2o11bobo7bo2b5ob3o$37bo7b3o6b3o$19b 2o15bo11b2o4bo$20bo14b3o7b2obo3bo$17b3o16b3o7bo2b2o2b4o$17bo19b2o7bo2b o3bo$31bo12bob2obo2bo$32b2o7b2o4b2o$31b2o7b4o3b2ob2o2bo$43bob2o6bobo$ 49b3obo2bo$42b2ob2o3bo3b2o$43bob2ob2ob3o$43bob2o4bobo$40bo5bo4b2o$41bo 3bobo$39b3o4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 HEIGHT 400 GPS 11 ZOOM 8 ]]
Pattern type Gun
Number of cells 222
Bounding box 57×37
Period 33
Barrels 1
Discovered by Arie Paap
Matthias Merzenich
Year of discovery 2018

Period-33 glider gun is a true period 33 gun discovered by Arie Paap on October 3, 2018.[1] The underlying interaction of 2 copies of Jason's p33 was found by Matthias Merzenich the previous day.[2] The large period-3 sparker is necessary to suppress a spark of one copy of the p33 engine that would otherwise interact with the produced glider. It is the first known true period 33 gun and represents the smallest odd period known for a true period gun.


  1. Arie Paap (October 2, 2018). Re: Gun discussion thread (discussion thread) at the forums
  2. Matthias Merzenich (October 1, 2018). Re: Gun discussion thread (discussion thread) at the forums