Random Challenge

[Inferno]

I've thought of a challenge that I think might be interesting.

What is the largest non-pseudo still life that you can find which can be cleanly destroyed by a single glider?

I'd probably exclude still lives such as long^n boats, because they kinda ruin the challenge.
Here is the largest one I've found so far, a 44-bit still life:

Code: Select all

x = 13, y = 16, rule = B3/S23
7bo$8bo$6b3o3$6bo$5bobo$4bobobo$4bobobo$2b2obobob2o$bobobobobobo$o2bob
obobo2bo$obobobobobobo$b2obobobob2o$5bobo$6bo!

[Inferno]

Here's a related xs54:

Code: Select all

x = 13, y = 19, rule = B3/S23
7bo$8bo$6b3o3$6bo$5bobo$4bobobo$4bobobo$2b2obobob2o$bobobobobobo$o2bob
obobo2bo$obobobobobobo$b2obobobob2o$3bobobobo$3bo2bo2bo$4bobobo$5bobo$
6bo!

[Inferno]

Completely unrelated xs67:

Code: Select all

x = 17, y = 24, rule = B3/S23
6bo$5bo$5b3o3$2b2o$2bo$3b3o$6bo$5b2o$4bo2b2o$4bobo2bo$3b2ob2obo$5bo2bo
b2o$5bo2bobobo$2b2obob2obobo2bo$o2bobo2bobobobobo$2o2b2obo2bobo2bo$6bo
b3obo$6bo4bo$7b4o2$7b2o$7b2o!

[May13]

1G destruction of 113-cell still life:

Code: Select all

x = 30, y = 21, rule = B3/S23
28bo$29bo$27b3o3$27b2o$5b2o15b2o4bo$5bo16bo2b3o$7bob2o6bo5b3o$6b3ob3o
3bobo$2b2obo7bo2bo2bob3o$3bob2o5bobob4obo2bo$2bo4bobobobobo6bobo$2bob
2o2b2ob2o2bo2b4obo$obobo10b4o2bo$2o3b10o6bo$15b6o$5b3o2b3o2bo2bo$4bo2b
o2bo2bobo$3bobo7b2o$4bo!

Edit: 123

Code: Select all

x = 25, y = 23, rule = B3/S23
18bo$19bo$17b3o3$15bo$13b3o4b2o$12bo6bobo$2o8bo2bo5bo$bo7bob3o2b2obo$o
8bo6bo2b2o$obo5b2ob3o4bo2bo$bobo3bo3bo2bo2b2o2bo$2bobobob2obobo2bo2b3o
b2o$4bobo2bobob3o2bo3bobo$3b2ob3o2bo4b2obo2bo$2bo8b5o2bobobobo$3b6o7bo
bobo2b2o$5bo2b9obobo$19bo$10b4o2b3o$10bo2bo2bo$14b2o!

[breaker's glider gun]

although a bit off-topic (too small to win any prizes), I just crafted this still life and tried to kill it 1G:

Code: Select all

x = 16, y = 24, rule = B3/S23
5b2ob2o$6bobo$3bo2bobo2bo$3b3o3b3o2$3b3o3b3o$2bo3bobo2bo$bo2bobob2o$o
b2obo$bo2bo$2b2o11$13b3o$13bo$14bo!

is it possible?

[wirehead]

I hate to squelch your enthusiasm, but in theory one could build a long fuse and hit it with a glider. The fuse could be made longer to beat out any other still life:

Code: Select all

x = 38, y = 38, rule = B3/S23
25b2ob2o$25b2ob2o$32b2o2b2o$25b5o2bobo2bo$24bo5bobobobo$20b2o3b2o2b2o
bobob2o$19bo2bo3bo6bo$20b2o3bo$24bo$23bo$22bo$21bo$20bo$19bo$18bo$17b
o$16bo$15bo$14bo$13bo$12bo$11bo$10bo$9bo$8bo$7bo$6bo$5bo$4bo$3bo$obo$
2o4$3b3o$3bo$4bo!

(provided, of course, that you could have a thing on the end that actually died instead of producing random ash; I just fooled around with the end of the fuse until it produced something that exploded when the fuse was hit.)

[get_Snacked]

I hate to squelch your enthusiasm, but in theory one could build a long fuse and hit it with a glider. The fuse could be made longer to beat out any other still life:

Code: Select all

x = 38, y = 38, rule = B3/S23
25b2ob2o$25b2ob2o$32b2o2b2o$25b5o2bobo2bo$24bo5bobobobo$20b2o3b2o2b2o
bobob2o$19bo2bo3bo6bo$20b2o3bo$24bo$23bo$22bo$21bo$20bo$19bo$18bo$17b
o$16bo$15bo$14bo$13bo$12bo$11bo$10bo$9bo$8bo$7bo$6bo$5bo$4bo$3bo$obo$
2o4$3b3o$3bo$4bo!

(provided, of course, that you could have a thing on the end that actually died instead of producing random ash; I just fooled around with the end of the fuse until it produced something that exploded when the fuse was hit.)

here's how to destroy an SL with a fuse. someone else may reduce it.

Code: Select all

x = 35, y = 33, rule = B3/S23
25b2o$26bo$25bo$24bob3o$23bo2bo2bob2obo$22bo3bo2bobob2o$21bo5b2o2bo$20b
o10bo$19bob3o3b4o$18bo2bo2bo2bo$17bo3bo2bo3bo$16bo5b2o5bo$15bo12b2o$14b
o$13bo$12bo$11bo$10bo$9bo$8bo$7bo$6bo$5bo$4bo$3bo$obo$2o4$3b3o$3bo$4b
o!

[wirehead]

What is the largest non-pseudo still life that you can find which can be cleanly destroyed by a single glider?

Infinitely large. Proof:

Code: Select all

x = 35, y = 33, rule = B3/S23
25b2o$26bo$25bo$24bob3o$23bo2bo2bob2obo$22bo3bo2bobob2o$21bo5b2o2bo$20b
o10bo$19bob3o3b4o$18bo2bo2bo2bo$17bo3bo2bo3bo$16bo5b2o5bo$15bo12b2o$14b
o$13bo$12bo$11bo$10bo$9bo$8bo$7bo$6bo$5bo$4bo$3bo$obo$2o4$3b3o$3bo$4b
o!

Code: Select all

x = 80, y = 78, rule = B3/S23
70b2o$71bo$70bo$69bob3o$68bo2bo2bob2obo$67bo3bo2bobob2o$66bo5b2o2bo$65b
o10bo$64bob3o3b4o$63bo2bo2bo2bo$62bo3bo2bo3bo$61bo5b2o5bo$60bo12b2o$59b
o$58bo$57bo$56bo$55bo$54bo$53bo$52bo$51bo$50bo$49bo$48bo$47bo$46bo$45b
o$44bo$43bo$42bo$41bo$40bo$39bo$38bo$37bo$36bo$35bo$34bo$33bo$32bo$31b
o$30bo$29bo$28bo$27bo$26bo$25bo$24bo$23bo$22bo$21bo$20bo$19bo$18bo$17b
o$16bo$15bo$14bo$13bo$12bo$11bo$10bo$9bo$8bo$7bo$6bo$5bo$4bo$3bo$obo$
2o4$3b3o$3bo$4bo!

Nice find, get_Snacked. No need to reduce it here. You have just proven that that there exists an infinite family of extensible still lives that can be cleanly destroyed by a single glider.

[breaker's glider gun]

Nice find, get_Snacked. No need to reduce it here. You have just proven that that there exists an infinite family of extensible still lives that can be cleanly destroyed by a single glider.

I'd probably exclude still lives such as long^n boats, because they kinda ruin the challenge.

[get_Snacked]

What is the largest non-pseudo still life that you can find which can be cleanly destroyed by a single glider?

Infinitely large. Proof:

Code: Select all

x = 35, y = 33, rule = B3/S23
25b2o$26bo$25bo$24bob3o$23bo2bo2bob2obo$22bo3bo2bobob2o$21bo5b2o2bo$20b
o10bo$19bob3o3b4o$18bo2bo2bo2bo$17bo3bo2bo3bo$16bo5b2o5bo$15bo12b2o$14b
o$13bo$12bo$11bo$10bo$9bo$8bo$7bo$6bo$5bo$4bo$3bo$obo$2o4$3b3o$3bo$4b
o!

Code: Select all

x = 80, y = 78, rule = B3/S23
70b2o$71bo$70bo$69bob3o$68bo2bo2bob2obo$67bo3bo2bobob2o$66bo5b2o2bo$65b
o10bo$64bob3o3b4o$63bo2bo2bo2bo$62bo3bo2bo3bo$61bo5b2o5bo$60bo12b2o$59b
o$58bo$57bo$56bo$55bo$54bo$53bo$52bo$51bo$50bo$49bo$48bo$47bo$46bo$45b
o$44bo$43bo$42bo$41bo$40bo$39bo$38bo$37bo$36bo$35bo$34bo$33bo$32bo$31b
o$30bo$29bo$28bo$27bo$26bo$25bo$24bo$23bo$22bo$21bo$20bo$19bo$18bo$17b
o$16bo$15bo$14bo$13bo$12bo$11bo$10bo$9bo$8bo$7bo$6bo$5bo$4bo$3bo$obo$
2o4$3b3o$3bo$4bo!

Nice find, get_Snacked. No need to reduce it here. You have just proven that that there exists an infinite family of extensible still lives that can be cleanly destroyed by a single glider.

reduction anyways:

Code: Select all

x = 29, y = 33, rule = B3/S23
25b2o$26bo$25bo$24bo$23bob3o$22bobo3bo$21bo2bo2bo$20bo3bobo$19bo5bo$18b
o$17bo$16bo$15bo$14bo$13bo$12bo$11bo$10bo$9bo$8bo$7bo$6bo$5bo$4bo$3bo
$obo$2o4$3b3o$3bo$4bo!

breaker's glider gun, apologies, i was just playing around with the long fuse because it was fun seeing SL's almost die.

[toroidalet]

Here's a slightly less trivial way to construct very large still lifes. The tables in between stretched beehives can be changed (there should be an odd number of "tips" on each side).

Code: Select all

x = 150, y = 11, rule = B3/S23
obo$b2o$bo2$107bo11bo20bo$5b2obo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2b
o2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bobobobo2bo2bo
bobobo2bo2bo2bo2bo2bobobobo2bo2bo$5b2ob97obobob7obobob16obobob7o$106bo
bo9bobo18bobo$5b100obobob7obobob16obobob7o$5bo2bo2bo2bo2bo2bo2bo2bo2bo
2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo
2bo2bobobobo2bo2bobobobo2bo2bo2bo2bo2bobobobo2bo2bo$107bo11bo20bo!

This old fuse turn can also make complex still lives:

Code: Select all

x = 13, y = 18, rule = B3/S23
2o$o$bo$2bo$3bo$4bo$5bo$6bo$7bo3b2o$8bobobo$7b2obo$8bob2o$7bo$6bo$5bo$
4bo$3bo$2bo!

Code: Select all

x = 56, y = 46, rule = B3/S23
3b2o$3bobo$b2o3bo$bo5bo$3bo4bo$2b2o5bo$10bo$11bo3b2o$12bobobo$11b2obo$
12bob2o$11bo$10bo$9bo$8bo$7bo$6bo28b2o$2o3bo29bo2bo$obobo31b3o$2bob2o$
b2obo31b3o$5bo29bobobo$6bo27bo5bo$7bo25bo7bo$8bo23bo9bo$9bo21bo11bo$
10bo19bo13bo$11bo17bo15bo$12bo15bo17bo$13bo13bo19bo$14bo11bo21bo$15bo
9bo23bo$16bo7bo25bo3b2o$17bo5bo27bobobo$18bobobo27b2obo$19b3o29bob2o$
50bo$19b3o27bo$18bo2bo26bo$18b2o27bo$44bobo$44b2o2$46b2o$46bobo$46bo!

If we could make a still life that produces a single glider, that would allow for more things. It is possible to make a G-LWSS seed which could be connected to something:

Code: Select all

x = 25, y = 18, rule = B3/S23
21b2o$21bo$19bobo$19b2o$17b2o$16bobo$7bo5bo2bo$o5bobo3bobob2o$b2obo2bo
bobobo2bo$2o2b2obobobo4bobo$7bobob2o4b2o$7b2o10b2o$19bobo$21bo$21b2o2$
21b4o$21bo2bo!

[squareroot12621]

G→LWSS + G:

Code: Select all

x = 13, y = 8, rule = B3/S23
7bo$o5bobo$b2obo2bobo$2o2b2obobo$7bob2o$7b2o2bo$10bobo$11b2o!
[[ X -5 ZOOM 20 STOP 26 ]]

[toroidalet]

That wasn't useful to the "random challenge" because you can't connect it, but it is a nice find.

The reason why I wanted to find a still life that cleanly produced a glider was to do stupid things like this:

Code: Select all

x = 86, y = 48, rule = B3/S23
83bo$71b2o9bobo$71bobob2o4bobo$56b2o10b2obobobo4bobo$57bo10bo2bobobobo
2bo$56bo13bobo3bobob2o$55bob3o4b2o5bo5bo2bo$54bo2bo2bobo2bo14bobo$53bo
3bo2bob2o17bobo$52bo5b3obo19bo$51bo10bo$50bo7b4o18b5o$49bo8bo21bo4bo$
48bo10bo23bobo$47bo12bo21bobo$25b2o19bo14bo19bobo$26bo18bo16bo18b2o$
25bo18bo18bo15b2o$24bob3o4b2o8bo20bo13bobo$23bo2bo2bobo2bo7bo22bo11bo$
22bo3bo2bob2o8bo24bo9bo$21bo5b3obo8bo26bo7bo$20bo10bo7bo28bo5bo$19bo7b
4o7bo30bobobo$18bo8bo9bo32b3o$17bo10bo7bo$16bo12bo5bo34b3o$15bo14bobob
o35bo2bo$14bo16b3o38b2o$13bo$12bo18b3o$11bo19bo2bo$10bo22b2o$9bo$8bo$
7bo$6bo$5bo$4bo$3bo$obo$2o4$3b3o$3bo$4bo!

[wirehead]

Another interesting task would be to impose more constraints... would it be possible to create a large still life that a) is NOT extensible and b) can still be killed cleanly by one glider. I'm not sure whether a) is even possible, but it'd be worth a try.

[toroidalet]

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).

[toroidalet]

677-cell still life:

Code: Select all

x = 118, y = 77, rule = B3/S23
85bo$84bobo$81bo2bobo$56b2o2bobo17bobobob2o$55bobo2b2obo15bobo2bobo$
54bo3b2o3bo4bo7bo2bo4bobo$51bobo5bo3bobobobo5bobobo5bo29bo$51b2o5bo5b
2obobo2bo2bob2o24b2o9bobo$57bo9bobobobobo27bobob2o4bobo$56bo7b2obobo2b
o2bo24b2obobobo4bobo$55bo7bobobobo5bob2o21bo2bobobobo2bo$54bo8b2o3bo7b
o2bo22bobo3bobob2o$53bo7b2o14bobo23bo5bo2bo$52bo9bo15bo33bobo$51bo9bo
51bobo$50bo9bo53bo$49bo9bo$48bo9bo7b2o44b5o$47bo9bo7bobo44bo4bo$46bo9b
o7bo3b2o45bobo$45bo9bo7bo5bo44bobo$44bo9bo7bo5bo44bobo$6bo5b2o29bo9bo
7bo6b2o43b2o$7bo4bobo4b2o21bo9bo7bo5b2o2bo40b2o$5b3o5bobo2bobo20bo9bo
7bo5bobo2b3o39bo$14bo2bo3b2o17bo9bo7bo6b2o6bo37bo$2bo12b2o5bo16bo9bo7b
o5b2o7bo37bo$bobo17bo16bo9bo7bo7bo7bobo34bo$obobo15bob3o4b2o6bo9bo7bo
7bo9bobo32bo$2o2bo14bo2bo2bobo2bo5bo9bo7bo7bo11b2o31bo$4bobo11bo3bo2bo
b2o6bo9bo7bo7bo44bo$5bobo9bo5b3obo6bo9bo7bo7bo5b2o37bo$6bobo7bo10bo5bo
9bo7bo7bo7bo36bo$7bo2bo5bobo4b4o5bo9bo7bo7bo7bo36bo$8b3o6bobo3bo7bo9bo
7bo7bo5bobob3o4b2o26bo$11b2o5bo5bo5bo9bo7bo7bo6b2o2bo2bobo2bo25bo$8b2o
bobo11bobobo9bo5bobo7bo5b2o4bo2bob2o26bo$9bo4bo11b3o9bo6b2o7bo5bobo5b
3obo26bo$7bobo5bo21bo5b2o9b2o4b2o10bo25bo$6bobo7bo9b3o7bo5bobo11bob2o
8b4o25bo$7bo9bo8bo2bo6b2o4b2o12b2obo8bo27bo$18bo9b2o8bob2o18b2o7bo25bo
$19bo18b2obo19bo8bo23bo$20bo3b2obob3o10b2o17bob2o6bo21bo$21bo2bob2obo
2bo10bo18bo2bo6bo19bo$22bobo6bobo9bob2o17b2o7bo17bo$23b2o7bobo9bo2bo
13bo12bo15bo$33bo12bobo11bobo12bo13bo$34b3o10b2o12bobo12bo11bo$37bo2b
2o20bo2bo11bo9bo$36bo2bobo21b3o12bo7bo$36b2obo26b2o11bo5bo$39bo17bo5b
2obobo11bobobo$39bob2o13bobo5bo4bo11b3o$40bobo9b2obob2o3bobo5bo$41bo9b
obobo5bobo7bo9b3o$42b3o5bobo2bo6bo9bo8bo2bo$45bo3bobo3bob2o14bo9b2o$
44bobobobo5bo2bo14bo$44bobobo8b2o16bo3b2obob3o$45b2ob2o26bo2bob2obo2bo
$77bobo6bobo$78b2o7bobo$88bo$89b3o$92bo2b2o$91bo2bobo$91b2obo$94bo17bo
$94bob2o13bobo$95bobo9b2obob2o$96bo9bobobo$97b3o5bobo2bo$100bo3bobo3bo
b2o$99bobobobo5bo2bo$99bobobo8b2o$100b2ob2o!

EDIT: This was actually extensible due to this 180° turner:

Code: Select all

x = 25, y = 23, rule = B3/S23
7bo7b2o6b2o$6bo7bobo5bobo$5bo7bo7bo$4bo7bo7bo$3bo5bobo7bo$2bo6b2o7bo$b
o5b2o8bo$o5bobo7bo$2o4b2o7bo$2bob2o8bo$2b2obo7bo$12bo$2b3o6bo$2bo2bo4b
o$4b2o3bo$8bo$7bo$6bo$5bo$4bo$3bo$2bo$2b2o!

EDIT2: This one works with 702 cells:

Code: Select all

x = 118, y = 77, rule = B3/S23
85bo6bo$84bobo3b3o$81bo2bobo2bo$56b2o2bobo17bobobobobobo$55bobo2b2obo
15bobo2bobo2bo$54bo3b2o3bo4bo7bo2bo4bobo$51bobo5bo3bobobobo5bobobo5bo
29bo$51b2o5bo5b2obobo2bo2bob2o24b2o9bobo$57bo9bobobobobo27bobob2o4bobo
$56bo7b2obobo2bo2bo24b2obobobo4bobo$55bo7bobobobo5bob2o21bo2bobobobo2b
o$54bo8b2o3bo7bo2bo22bobo3bobob2o$53bo7b2o14bobo23bo5bo2bo$52bo9bo15bo
33bobo$51bo9bo51bobo$50bo9bo53bo$49bo9bo$48bo9bo7b2o44b5o$47bo9bo7bobo
44bo4bo$46bo9bo7bo3b2o45bobo$45bo9bo7bo5bo44bobo$44bo9bo7bo5bo44bobo$
12b2o29bo9bo7bo6b2o43b2o$5bobo4bobo4b2o21bo9bo7bo5b2o2bo40b2o$6b2o5bob
o2bobo20bo9bo7bo5bobo2b3o39bo$6bo7bo2bo3b2o17bo9bo7bo6b2o6bo37bo$2bo
12b2o5bo16bo9bo7bo5b2o7bo37bo$bobo17bo16bo9bo7bo7bo7bobo34bo$obobo15bo
b3o4b2o6bo9bo7bo7bo9bobo32bo$2o2bo14bo2bo2bobo2bo5bo9bo7bo7bo11b2o31bo
$4bobo11bo3bo2bob2o6bo9bo7bo7bo44bo$5bobo9bo5b3obo6bo9bo7bo7bo5b2o37bo
$6bobo7bo10bo5bo9bo7bo7bo7bo36bo$7bo2bo5bobo4b4o5bo9bo7bo7bo7bo36bo$8b
3o6bobo3bo7bo9bo7bo7bo5bobob3o4b2o26bo$11b2o5bo5bo5bo9bo7bo7bo6b2o2bo
2bobo2bo25bo$8b2obobo11bobobo9bo5bobo7bo5b2o4bo2bob2o26bo$9bo4bo11b3o
9bo6b2o7bo5bobo5b3obo26bo$7bobo5bo21bo5b2o9b2o4b2o10bo25bo$6bobo7bo9b
3o7bo5bobo11bob2o8b4o25bo$7bo9bo8bo2bo6b2o4b2o12b2obo8bo27bo$18bo9b2o
8bob2o18b2o7bo25bo$19bo18b2obo19bo8bo23bo$20bo3b2obob3o10b2o17bob2o6bo
21bo$21bo2bob2obo2bo10bo18bo2bo6bo19bo$22bobo6bobo9bob2o17b2o7bo17bo$
23b2o7bobo9bo2bo13bo12bo15bo$33bo12bobo11bobo12bo13bo$34b3o10b2o12bobo
12bo11bo$37bo2b2o20bo2bo11bo9bo$36bo2bobo21b3o12bo7bo$36b2obo26b2o11bo
5bo$39bo23b2obobo11bobobo$39bob2o21bo4bo11b3o$40bobo19bobo5bo$41bo19bo
bo7bo9b3o$42b3o15bobo9bo8bo2bo$45bo14b2o11bo9b2o$44bobo11b2o14bo$43bo
2bo8bobobo15bo3b2obob3o$43bobo9b2o19bo2bob2obo2bo$44bo8b2o22bobo6bobo$
52bobo23b2o7bobo$46b2o4b2o34bo$47bo2b2o37b3o$43b2o2bobobo40bo2b2o$43bo
bobob2o40bo2bobo$44bo2bo43b2obo$45b3o46bo17bo$94bob2o13bobo$47b3o45bob
o9b2obob2o$47bo2bo45bo9bobobo$49bobo45b3o5bobo2bo$50b2o48bo3bobo3bob2o
$99bobobobo5bo2bo$99bobobo8b2o$100b2ob2o!

There are almost certainly ways to make arbitrarily large still lifes. For example, it seems likely that you could make a still life which creates an RCT, does something silly and then cleans itself up.
Also, it might be "fun" to try and create still lifes that synthesize things when hit with a single glider.

[get_Snacked]

If we could make a still life that produces a single glider, that would allow for more things. It is possible to make a G-LWSS seed which could be connected to something:

Code: Select all

x = 25, y = 18, rule = B3/S23
21b2o$21bo$19bobo$19b2o$17b2o$16bobo$7bo5bo2bo$o5bobo3bobob2o$b2obo2bo
bobobo2bo$2o2b2obobobo4bobo$7bobob2o4b2o$7b2o10b2o$19bobo$21bo$21b2o2$
21b4o$21bo2bo!

yes!

Code: Select all

x = 28, y = 32, rule = B3/S23
2o$2o13$6bo$5bobo$6bobo3bo$7bobobobo$9bobo2bo$8bob2o3bo$8bo7bo$9b3o5b
o$11bo6bo$9b2o8bo$9bo10bo$10bo10bo$9b2o11bobo$23b2o2$8b2o15b2o$8b2o15b
obo$25bo!

oh... wait... it has to be strict... welp...
for Pete's sake...

[pipsqueek]

this means there exists a still life with any number of cells that has a one glider destruction
for still lifes with 1 to 18 cells

Code: Select all

x = 86, y = 43, rule = B3/S23
48bo$34bo14bo24bo$35bo11b3o25bo$33b3o37b3o$bo12bo$2bo12bo$3o10b3o$40b
2o32bo3bo$5b2o13b2o17bobo15b2o14bobobobo$5b2o12bo2bo16bo16bo2bo13bobob
obo$19bo2bo14b3o16b2obo12b2obobob2o$bo18b2o14bo20bob2o15bo$2bo33b2o19b
o2bo$3o55b2o$74bo$75bo$6b2o10bo15bo38b3o$5bobo11bo15bo$6bo10b3o13b3o$
40bo13b2o5b2o21b2o$39bobo12bo7bo17b2obobo$21bo16bobobo12b3ob3o17bobobo
$bo18bobo15bobobo14bobo19bobobo$2bo17bobo16bobo16bo21b2obobo$3o16b2ob
2o16bo9b3o31b2o$7b2o43bo$6bo2bo41bo$7b2o2$37bo$38bo$20bo15b3o$bo19bo$
2bo16b3o29bo$3o49bo$50b3o$38bo$37bobob2o16bo$7bo12b2o15bobobo15b3o$6bo
bo10bo2bo13b2obobo14bo3b2o$5bo2bo11bobo17bo15bobobobo$6b2o11b2ob2o33b
2obobo$61bo!

and the extensible one proves for 19 to ∞ cells

Code: Select all

x = 69, y = 23, rule = B3/S23
10b2o23b2o28b2o$11bo24bo29bo$10bo24bo29bo$9bo24bo29bo$3o3bobob3o20bob
3o25bob3o$2bo3b2obo3bo18bobo3bo23bobo3bo$bo7bo2bo18bo2bo2bo23bo2bo2bo$
9bobo18bo3bobo23bo3bobo$10bo10b3o3bobo5bo23bo5bo$23bo3b2o29bo$22bo34bo
$56bo$55bo$54bo$53bo$52bo$51bo$50bo$49bo$48bo$39b3o3bobo$41bo3b2o$40bo
!

[get_snackeTWO]

and the extensible one proves for 19 to ∞ cells

Code: Select all

x = 69, y = 23, rule = B3/S23
10b2o23b2o28b2o$11bo24bo29bo$10bo24bo29bo$9bo24bo29bo$3o3bobob3o20bob
3o25bob3o$2bo3b2obo3bo18bobo3bo23bobo3bo$bo7bo2bo18bo2bo2bo23bo2bo2bo$
9bobo18bo3bobo23bo3bobo$10bo10b3o3bobo5bo23bo5bo$23bo3b2o29bo$22bo34bo
$56bo$55bo$54bo$53bo$52bo$51bo$50bo$49bo$48bo$39b3o3bobo$41bo3b2o$40bo
!

actually, mine is beaten by toroidalet's carrier-[not sure what it is, but probably tie] they secretly posted at the start of their extensible single-glider-to-single-glider convertor SL conjecture (wow, that's a long name), but 'ya know what i say to that! bite back with the feather! (man, this is the only time a feather is actually a useful weapon! take that, all the feathers i threw in the trash because someone told me to!)

Code: Select all

x = 83, y = 26, rule = B3/S23
81b2o$24b2o54bobo$22bo2bo53bo$22b2o2b2o52b2o$27bo53bo$26bo53bo$25bo53b
o$24bo53bo$23bo53bo$22bo53bo$21bo53bo$20bo53bo$19bo28bo24bo$18bo30bo22b
o$17bo32bo20bo$16bo14b21o18bo$15bo34bo18bo$14bo34bo18bo$13bo34bo18bo$
12bo53bo$11bo53bo$10bo53bo$9bo53bo$3o3bobo45b3o3bobo$2bo3b2o48bo3b2o$
bo53bo!

[get_snackeTWO]

i just realised how dumb i've been this whole time...:

Code: Select all

x = 28, y = 24, rule = B3/S23
24bo$24b3o$27bo$26bo$25bo$24bo$23bo$22bo$21bo$20bo$19bo$18bo$17bo$16b
o$15bo$14bo$13bo$12bo$11bo$10bo$9bo$3o3bobo$2bo3b2o$bo!

[Ohhhhhhhhh]

i just realised how dumb i've been this whole time...:

Code: Select all

x = 28, y = 24, rule = B3/S23
24bo$24b3o$27bo$26bo$25bo$24bo$23bo$22bo$21bo$20bo$19bo$18bo$17bo$16b
o$15bo$14bo$13bo$12bo$11bo$10bo$9bo$3o3bobo$2bo3b2o$bo!

Basically this has already found by me (perhaps already by a lot of us) but failed to post it as something useful, and thus no record of this was made so nobody can actually know……
Maybe LifeWiki has some record of this, but since it’s too easy to find they didn’t notice.

[C_R_116]

112 cells without the use of a diagonal fuse:

Code: Select all

x = 44, y = 10, rule = B3/S23
6b2o$2b2obobo19b2o4b2o$3bobo5bo3bo3bo3b2obo2bobo2bo8bo$3bobo2bobobobob
obobobobob2obob2obob2o3b2o$2b2ob4obobobobobobobobo4bo4bobo5b2o$10bobob
obobobobobo4bo4bobo$4ob2o3bobobobobobobobob2obob2obob2o$o2bobo5bo3bo3b
o3b2obo2bobo2bo$3bobo21b2o4b2o$2b2ob2o!

[AlbertArmStain]

Another challenge, try to find a rule that has the most types eaters.

[rutabaga]

Code: Select all

x = 46, y = 39, rule = B3/S23
28bo$27bobob2o$26bo2bob2o$27b2o$29b4o$27b2o4bo$25b3o2b4o$24bo4b2o$24b
ob3o3b2o$21b2obobo3b3o3b2o$11b2o9bobobob2o4bo2bo2b2o$11bobo2b2ob3o3b2o
bo2b5obobobo2bo$8b2obobo3bobo9b3o5bobobobobo$8b2obobobo17b3obobobo2bo
$11bobob4o12b2o2bobo2b2o$8b2obobo4bo11bobo3b2o$8b2obob2ob2o11bobo$2b2o
7bo2bobo13bo3b6o$2bo5b2obobo3bo16bo5bo$3b3o2b2obob5o10b5obob2o2b3o$5b
o5bo16bo3bobob2o5bo$6b6o3bo13bobo2bo7b2o$14bobo11b2ob2obob2o$8b2o3bob
o11bo4bobob2o$4b2o2bobo2b2o12b4obobo$bo2bobobob3o17bobobob2o$obobobob
o5b3o9bobo3bobob2o$bo2bobobob5o2bob2o3b3ob2o2bobo$4b2o2bo2bo4b2obobob
o9b2o$8b2o3b3o3bobob2o$12b2o3b3obo$15b2o4bo$12b4o2b3o$12bo4b2o$13b4o$
17b2o$13b2obo2bo$13b2obobo$17bo!

Challenge, EITHER:
Find a use for this still life
Find something cool to go in the middle of it
Find a rule where it is an oscillator
Synthesize this still life

[squareroot12621]

Code: Select all

x = 46, y = 39, rule = B3/S23
28bo$27bobob2o$26bo2bob2o$27b2o$29b4o$27b2o4bo$25b3o2b4o$24bo4b2o$24b
ob3o3b2o$21b2obobo3b3o3b2o$11b2o9bobobob2o4bo2bo2b2o$11bobo2b2ob3o3b2o
bo2b5obobobo2bo$8b2obobo3bobo9b3o5bobobobobo$8b2obobobo17b3obobobo2bo
$11bobob4o12b2o2bobo2b2o$8b2obobo4bo11bobo3b2o$8b2obob2ob2o11bobo$2b2o
7bo2bobo13bo3b6o$2bo5b2obobo3bo16bo5bo$3b3o2b2obob5o10b5obob2o2b3o$5b
o5bo16bo3bobob2o5bo$6b6o3bo13bobo2bo7b2o$14bobo11b2ob2obob2o$8b2o3bob
o11bo4bobob2o$4b2o2bobo2b2o12b4obobo$bo2bobobob3o17bobobob2o$obobobob
o5b3o9bobo3bobob2o$bo2bobobob5o2bob2o3b3ob2o2bobo$4b2o2bo2bo4b2obobob
o9b2o$8b2o3b3o3bobob2o$12b2o3b3obo$15b2o4bo$12b4o2b3o$12bo4b2o$13b4o$
17b2o$13b2obo2bo$13b2obobo$17bo!

Challenge, EITHER:
Find a use for this still life
Find something cool to go in the middle of it
Find a rule where it is an oscillator
Synthesize this still life

I picked the third one.

Code: Select all

x = 46, y = 39, rule = B3-j4t/S234ijz
28bo$27bobob2o$26bo2bob2o$27b2o$29b4o$27b2o4bo$25b3o2b4o$24bo4b2o$24b
ob3o3b2o$21b2obobo3b3o3b2o$11b2o9bobobob2o4bo2bo2b2o$11bobo2b2ob3o3b2o
bo2b5obobobo2bo$8b2obobo3bobo9b3o5bobobobobo$8b2obobobo17b3obobobo2bo
$11bobob4o12b2o2bobo2b2o$8b2obobo4bo11bobo3b2o$8b2obob2ob2o11bobo$2b2o
7bo2bobo13bo3b6o$2bo5b2obobo3bo16bo5bo$3b3o2b2obob5o10b5obob2o2b3o$5b
o5bo16bo3bobob2o5bo$6b6o3bo13bobo2bo7b2o$14bobo11b2ob2obob2o$8b2o3bob
o11bo4bobob2o$4b2o2bobo2b2o12b4obobo$bo2bobobob3o17bobobob2o$obobobob
o5b3o9bobo3bobob2o$bo2bobobob5o2bob2o3b3ob2o2bobo$4b2o2bo2bo4b2obobob
o9b2o$8b2o3b3o3bobob2o$12b2o3b3obo$15b2o4bo$12b4o2b3o$12bo4b2o$13b4o$
17b2o$13b2obo2bo$13b2obobo$17bo!