Wing is a common evolutionary sequence that stabilizes at generation 104 as a block and a glider. Its most common grandparent is traditionally referred to as block and glider, which is composed of two pre-blocks and has a lifespan of 106 generations. That pattern has a six-cell parent called nine, resembling an eater 1 with one tail cell missing.
Nine can also be seen as a pre-block connected to a three-cell-long line.
Like other common evolutionary sequences, wings can be hassled in various ways, such as in the p25 wing and block hassler[note 1][note 2] and p128 wing shuttle.
A number of conduits have been found to produce or accept a wing (abbreviated W) with reasonable clearance, such as PF35W, a wing-to-LWSS converter and WFx46H. A WSW-3 conduit[note 3] can be made by eating the extra block using a block or eater 1.
Gallery
x = 4, y = 3, rule = B3/S23
2o$obo$2b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ ZOOM 16 Y -4 AUTOSTART GPS 4 PAUSE 2 T 32 PAUSE 2 T 35 PAUSE 2 LOOP 36 ]]
Block and glider reappears 32 generations later shifted 3 cells right and 7 cells up only to be turned into a B-heptomino 3 generations later (click above to open LifeViewer) RLE:herePlaintext:here
↑An alternative version of this oscillator is shown in jslife with a different method of stabilization.[1]Nicolay Beluchenko found the simpler stabilization with two fumaroles later on.[2] However, it is unknown when or by whom this reaction was found.[3]