A p4 c puffer of the following form. The smallest iteration, shown below, has an initial population of 25 cells. For a full list of possible iterations, see Iteration guides. Compare accidental ship.

accidental puffer.png

x = 9, y = 13, rule = s0/b2
bo$2bo4bo$3bo4bo$4bo3bo$6bo$o4bo$b3o$b3o$o4bo$6bo$4bo3bo$3bo4bo$2bo4bo!