384-cell inextensible solution:
Code: Select all
x = 94, y = 52, rule = B3/S23
87bo$75b2o9bobo$75bobob2o4bobo$72b2obobobo4bobo$72bo2bobobobo2bo$74bob
o3bobob2o$51bob2o20bo5bo2bo$51b2obo29bobo$55b2o28bobo$56bo29bo$55bo$
54bob3o4b2o19b5o$53bo2bo2bobo2bo19bo4bo$52bo3bo2bob2o24bobo$51bo5b3obo
24bobo$50bo10bo23bobo$49bo7b4o24b2o$48bo8bo25b2o$47bo10bo25bo$46bo12bo
23bo$45bo14bo21bo$44bo16bo19bo$6bo5b2o29bo18bo17bo$7bo4bobo4b2o21bo7bo
12bo15bo$5b3o5bobo2bobo20bo7bobo12bo13bo$14bo2bo3b2o17bo9bobo12bo11bo$
2bo12b2o5bo16bo11bo2bo11bo9bo$bobo17bo16bo13b3o12bo7bo$obobo15bob3o4b
2o6bo17b2o11bo5bo$2o2bo14bo2bo2bobo2bo5bo15b2obobo11bobobo$4bobo11bo3b
o2bob2o6bo17bo4bo11b3o$5bobo9bo5b3obo6bo16bobo5bo$6bobo7bo10bo5bo16bob
o7bo9b3o$7bo2bo5b2o5b4o5bo18bo9bo8bo2bo$8b3o12bo7bo30bo9b2o16bob2o$11b
2o11bo5bo32bo24b3obo$8b2obobo11bobobo34bo3b2obob3o11bo4bo$9bo4bo11b3o
36bo2bob2obo2bo9bobo3b2o$7bobo5bo50bobo6bobo7bobo$6bobo7bo9b3o38b2o7bo
bo5bobo$7bo9bo8bo2bo47bo5bobo$18bo9b2o16bob2o28b3o2bo$19bo24b3obo32bob
o$20bo3b2obob3o11bo4bo31bo2bobo$21bo2bob2obo2bo9bobo3b2o30b2o2b2o$22bo
bo6bobo7bobo$23b2o7bobo5bobo$33bo5bobo$34b3o2bo$37bobo$36bo2bobo$36b2o
2b2o!
The fuses with the barge bookends cannot be extended because the fuse would create 2 blocks and only 1 would be destroyed.
The short fuse (between the first glider producer and the first turner) cannot be extended because it would move the blinker further away from the glider (there may be a still life where it is longer).
The long fuse cannot be extended because it would change the timing between the glider and the LWSS and make the collision fail.
The fuse from the second glider producer to the second turner cannot be extended because then the second glider wouldn't make a LWSS.
Finally, the fuse between the second turner and the LWSS producer cannot be extended because the glider-LWSS collision would be shifted and wouldn't destroy the blinker.
It seems very likely that you could make much larger still lives just like this one. In fact, you can probably add many more cells onto it (this added 80 cells from the original).
Any sufficiently advanced software is indistinguishable from malice.