Small Spaceship Syntheses

[dvgrn]

How does one use LLS to search for syntheses?

This isn't really an answer, but here are a couple of links that are vaguely related to glider syntheses via LLS:

TigerCub414's first foray into glider synthesis

my brief experiments with LLS, which included at least one round of expanding-ring predecessor searches, which tried to guarantee stable stuff in the center (you can definitely do that in LLS with variables, then hard-code whatever the stable stuff is once it has settled.)

I didn't have a good way of biasing the expanding active ring to look like a lot of colliding gliders. That seems to be the hugely unworkable part of this problem of getting glider syntheses out of LLS, or any predecessor-hunting algorithm.

[ThePlayzr]

The 36-cell c/3 looks like a good spaceship to try next:

Code: Select all

x = 42, y = 53, rule = LifeHistory
39.A$28.A.A8.A.A$28.2A9.2A$29.A6$.A$2.A$3A$26.A$8.A15.2A$6.A.A16.2A$7.
2A11$16.D$15.D.D$15.D.D$14.2A.D$13.A2.A2D$13.A2.C.D$14.2A$17.3D$17.3D
$20.D$21.2D$13.2A5.D.D$12.A2.A$12.A.A6.3D$13.A7.D.D$20.D.D$22.2D2$22.
D$20.D.D$20.D.D$21.D3$20.A$19.2A$19.A.A!
[[ STOP 57 ]]

Can someone try and synthesize this?