A p30 gun is any glider gun with true period 30. The first one, found by Bill Gosper in November 1970 (see Gosper glider gun ), was also the first gun found of any period. All known p30 glider guns are made from two or more interacting queen bee shuttles . Paul Callahan found 30 different ways that three queen bee shuttles can react to form a period 30 glider gun. One of the most interesting of these is shown below in which the gliders emerge in an unexpected direction.

```
x = 37, y = 27, rule = B3/S23
2o$bo$bobo6bo13bo$2b2o6b4o8bobo$11b4o6bobo$11bo2bo5bo2bo$11b4o6bobo$
10b4o8bobo8b2o$10bo13bo8bobo$35bo$35b2o2$16b3o$15b2ob2o$15b2ob2o$15b5o
$14b2o3b2o7$14b2o$15bo$12b3o$12bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 Z 12 HEIGHT 480 GPS 10 AUTOSTART PAUSE 2 ]]
```

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Other than the Gosper glider gun, there are three other reactions involving two queen bees that produce gliders:

```
x = 87, y = 13, rule = B3/S23
50b2o$51bo$12bo38bobo7bo$12bobo7bo29b2o7bobo$13bobo5bobo40b2o8bo$13bo
2bo2b2o3bo39b2o6bobo$13bobo3b2o3bo39b2o5bobo$2b2o8bobo4b2o3bo36bobo6bo
2bo$bobo8bo8bobo8b2o27bo9bobo$bo20bo9bobo37bobo8b2o$2o32bo39bo8bobo$
34b2o49bo$85b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 Z 8 HEIGHT 480 WIDTH 800 GPS 10 PAUSE 2 ]]
```

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The below reaction was found by Entity Valkyrie:

```
x = 24, y = 24, rule = B3/S23
8bo$6b3o$5bo$5b2o6$2o3b2o$2o3b2o$b5o$2bobo$22b2o$2b3o17bo$11bobo6bobo$
9bo3bo6b2o$9bo$8bo4bo$9bo$bo7bo3bo$bobo7bobo$obo$2bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 Z 12 HEIGHT 480 WIDTH 480 GPS 10 PAUSE 2 ]]
```

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External links