x = 33, y = 25, rule = B3/S23
15bo$14bo$14b3o3$30bo$29bobo$30bobo$31bo2$30bo$29bobo$30bo3$3o13b3o$2bo13bo$bo15bo5$28b3o$28bo$29bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 ZOOM 12 HEIGHT 450 THEME Book AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 4 T 32 PAUSE 1 T 69 PAUSE 3 LOOP 70 ]]
A small stable constellation is constructed via a four-glider synthesis discovered in March 2023.[c 2] Previously constructed with 5 gliders, this constellation is the result of the first step of an incremental synthesis of Negentropy, reducing the glider cost of the oscillator from 90 to 89 gliders.[c 3] (click above to open LifeViewer) Catagolue: here
A 4-glider collision is a collision between four gliders. There are infinitely many distinct 4-glider collisions.
There are no known attempts of a systematic classification or description of all possible (families of) four-glider collisions.[1][2][3][4] In particular, it is unknown whether or not it is possible to find a four-glider reverse caber-tosser; there is no known way to rule out with certainty a four-glider synthesis for any given glider-constructible target pattern.[5]
