It produces blinkers of the same spacing as those produced by blinker puffer 2 and Hivenudger 2, so a blinker fuse can similarly be used with that puffer.
Three symmetric versions of this puffer have appeared semi-naturally since the first in November 2016.[n 1] Like their monomer form, these must be supported by either middleweight or heavyweight spaceeships. Their backends must at all times must be aligned in the same way, though on April 22, 2022, Charity Engine found the third variant shown below, in which the unstable pattern is three cells longer.
↑There are four in b3s23/all-soups/yl8, but one is a duplicate of the first (and most common) one, recognised as distinct due to the blinker trails between them forming a contiguous line.[2]
