Challenges

[confocaloid]

In the rule B3-cjq4acekqwz5ack6i/S2cin3-jk4-z5acejk6in, find (or prove they don't exist):
a) an orthogonal spaceship under 30 cells
b) a diagonal spaceship under 30 cells
c) an infinite growth

Here is a p3 orthogonal c/3 spaceship (found with qfind 2.3)

Code: Select all

#C ./qfind -r B3-cjq4acekqwz5ack6i/S2cin3-jk4-z5acejk6in -p 3 -y 1 -w 7 -s asymmetric
x = 6, y = 7, rule = B3-cjq4acekqwz5ack6i/S2cin3-jk4-z5acejk6in
6o$2o$3o2$bo$bo$bo!

[d/dx]

The rule B2/S12V is hilariously longliving. Look at this 64x64 soup which lives for about 402,000 generations:

Code: Select all

x = 64, y = 64, rule = B2/S12V
2bo4b4ob3o3bo6b11obo3bob3ob2o2bo4b3ob4o$2o7bo2b2o2b2ob2ob7o2bob5o4bob
2o2b4o2bobo2bobobo$2o3b2o3bob2ob3ob4obo2b2obob2obobobo2b6o4b2o2b6obo$b
4o4bo2b4ob4o5bobo2b9ob3ob3obobo2b7o$3ob2o4b3o4bob3o2b3obobob5o3bo2b3o
7bo9bo$5ob4o3bo4bo2b3ob2o5b3obob2obobo2b6obo3b3o2b2o$4o2bo6bo2bobo2b5o
2bo2b2obobo3bo2bob7ob2o4b3obo$bo2b2o2b3o2bo2bo7b2o3b4obob2obo2bob2obob
2o2bo2b2o2bobo$b2o3bob5o2b2ob2obo2b2obo2bo6bo2b3o3b3o2bo3bo2b3o$obo3bo
b2obo2b2o3bobobo3bo3b4o3b2ob2ob2ob2ob2obobobo2b2o$ob2obob2o4b3obo2b2o
2bo3b2ob2obo2bob2obo2bo2b2obo2bo6b2o$3b2obob2obobo3b3o3b6obob2o5bo3b2o
4bo2bo3bo3bob2o$2bob2ob10o5bo2bobob2obo2bo6b3o3bo2b2o4bobo2bo$3bo2bobo
3b2o5bo5b6obo3bobobob2o2bo3b2obo3bob2obo$obo3b3o5bo2b3ob2o5b2obob2ob2o
3b2ob3o3bo3b2o2b3obo$o3bobo2b2o2bobo3b3ob4o2b3ob2obo2bob2o4bob3obo6bo$
2o2bob2ob3o2bo4b2ob2o3bo4b3ob2obo3b2ob2o2bo2bob2o2bo2b2o$ob3o3bob2ob3o
b2o2b5ob3ob2ob3o2bobo4bob4obo2b5o2bo$2o2bo4bob4obob2o3bo2b2o2bo3bo2b4o
bo5bob3ob5ob2obo$obo3b3o2bob5o4b7o2bo2b2ob5obob3ob2ob2o8bo$b2o2bo4b3o
2b2obob2o2bobo4bobo2b2obo2bob3o3b2obo3b3o3bo$4obo5b2o2b2obo5bob2ob2o4b
obo2b2ob2o2b2o3b2o2bobo2b2o$bobo2b2obobob3ob2obobob2ob2o3b4ob4obob2obo
2b2ob2o3bob4o$o3b5o3bobo2bo5bo2b5ob2o5bob2o3b2o2bob4obob4o$ob7obob6o3b
2obo4b7o6b2o6bobobo2b3obobo$3o2b3o2b3obobob2ob2ob3o4b2o3b2o3bo3b2ob5ob
ob3ob2obo$3o2bo2bo4b2o3bo5bobob2ob3o2bob2o4b6o3b5ob2o$3b2o2bo3bo3b6ob
4ob2o3bob2obo4b3o2b2o3b4obobob2o$bobob3obobo6b3obob3o3bob2ob2obob2ob2o
b2obob2o3b2ob2o2bo$o2bob3ob3o3b3o2b5o2bo2b3o5bo3bo4bo8bobo2b3o$b3ob2ob
ob2ob3obobo3b3ob3o2bobob2ob5ob2o2b2ob3ob2obo2bo$b3obob2o2bob2obo3bobob
5obobo3bo4b2o3b2o2bobo2b3obobo$2b2o4bo2bo9bo2bo3b2obo2bob6obo3b6obob3o
3b2o$o3bobobobo2b4ob6o2bobobob2ob3o6b2o3bo3bo2bob3obo$o3b4o2bo4b2obobo
2bobo2bob5o3b2ob2obo2b3o4bobo5b2o$o5b2ob8o2bo2b3obo2b4o2b3obob4obob2o
2bo2bo2bo2b2o$bobobo2bo5bo2b3obobo2b2obo4bo4bobo2b3obob2o2b4o2b3o$5b3o
3b3o3b2ob3o3b5obobob2o4b2o5bob2o2b4obobo$3o2bobo3bob3obob2o2b2o3b3obo
2bo4bob2ob4ob3obobob4obo$b2ob2obo4bo2b3ob4obobob2ob4obobobo2bo4b4o2b4o
2b2o$obobo2b7ob2o2b2o3b2o3b2o8bobo2b2obobob4obob3o2bo$4o4b2o2b2obob2ob
o2bo2bobo2bo2bo2bobob4ob2ob3o2b2ob4obo$o2bob6obo2bo3b3obobo4b2o3bob7ob
2o3bo3b2ob4obo$4b3o5bo2bo2b4obo4bo5bobo3b3o2b2obobo2bobobo5bo$2b3ob4ob
2o3bob2o3b2ob3o2b2o5b6o2b3ob2o3b2ob2o$b2o2b2ob4ob3obo4b3o4b4ob2ob4o2b
4ob3o2b5ob2obo$3b3ob2obo2b2obob2ob2ob4o4b2obo5b5ob3o3b2obobob4o$3ob2o
4b3o4bob5o2b2obo2bo2b4o4bob6obob2o5bobo$2o2b3o2bobo3b3obo3bobobobob2ob
2o2bob4obobobo3bo2b4obo$o2b2obo2bo2b3o3bo2bobob4o4bo2bob2o2bo5b2o2bobo
bob3o2bo$o5bo2bo2b2obobo3b2obobobob2obo5b2obob3o2bo3b2ob2o2bo2bo$b2o3b
ob4o2bo6bo5bo2bo2b6o3b2o2bobob3obob2ob2obo$3ob3o2b3obob2obo2b3ob2o2b4o
bo2bob3o3b5o6b7o$3bob5o2b8o2b4obo2bob4o4bobo2b2o3b2ob2o4bo3bo$2b3o4b2o
3bo3bo2bo3bo2bo5b2o3b2o2b6obob2o2bo3bo2bo$7ob2o2bo2bo5b2o5b2o3b2o2b2ob
obo2bo3b4o3b4o2bo$2bo4b2ob3o2b3obob2obobob3o3b3ob8o2bo4bo3bob4o$ob11o
2b3o3b3o4bob7o2bobobo2b2ob2o2b2obob2ob2o$b5ob3o3bob9o3bo2b2o2b6o2bob3o
b3ob2o2b2obo3bo$bobo2b2ob3o2b4o4bo6bo3b2ob2ob2ob3obo5b3ob5o$ob2ob2o4b
2obo2b2o3bo4bob2obob2obobo3bo2bobo3b2obo2b3o2bo$3obob2o2bo3bo2bo3b2obo
2bobo3b2obo2bob4obo6bo2b4ob3o$bo3b2ob3o2bo2b2o3bobo2b2o4bo6bob2o3b2o4b
o2bo2b4obo$2o4b2obobo4b2o2b3o2b2obobob2o4b4o3b3ob4o2b2obo2bo!

In this rule, find a diehard with a bounding box of at most 64x64 that lasts 1 million generations.

[tommyaweosme]

The rule B2/S12V is hilariously longliving. Look at this 64x64 soup which lives for about 402,000 generations:

Code: Select all

x = 64, y = 64, rule = B2/S12V
2bo4b4ob3o3bo6b11obo3bob3ob2o2bo4b3ob4o$2o7bo2b2o2b2ob2ob7o2bob5o4bob
2o2b4o2bobo2bobobo$2o3b2o3bob2ob3ob4obo2b2obob2obobobo2b6o4b2o2b6obo$b
4o4bo2b4ob4o5bobo2b9ob3ob3obobo2b7o$3ob2o4b3o4bob3o2b3obobob5o3bo2b3o
7bo9bo$5ob4o3bo4bo2b3ob2o5b3obob2obobo2b6obo3b3o2b2o$4o2bo6bo2bobo2b5o
2bo2b2obobo3bo2bob7ob2o4b3obo$bo2b2o2b3o2bo2bo7b2o3b4obob2obo2bob2obob
2o2bo2b2o2bobo$b2o3bob5o2b2ob2obo2b2obo2bo6bo2b3o3b3o2bo3bo2b3o$obo3bo
b2obo2b2o3bobobo3bo3b4o3b2ob2ob2ob2ob2obobobo2b2o$ob2obob2o4b3obo2b2o
2bo3b2ob2obo2bob2obo2bo2b2obo2bo6b2o$3b2obob2obobo3b3o3b6obob2o5bo3b2o
4bo2bo3bo3bob2o$2bob2ob10o5bo2bobob2obo2bo6b3o3bo2b2o4bobo2bo$3bo2bobo
3b2o5bo5b6obo3bobobob2o2bo3b2obo3bob2obo$obo3b3o5bo2b3ob2o5b2obob2ob2o
3b2ob3o3bo3b2o2b3obo$o3bobo2b2o2bobo3b3ob4o2b3ob2obo2bob2o4bob3obo6bo$
2o2bob2ob3o2bo4b2ob2o3bo4b3ob2obo3b2ob2o2bo2bob2o2bo2b2o$ob3o3bob2ob3o
b2o2b5ob3ob2ob3o2bobo4bob4obo2b5o2bo$2o2bo4bob4obob2o3bo2b2o2bo3bo2b4o
bo5bob3ob5ob2obo$obo3b3o2bob5o4b7o2bo2b2ob5obob3ob2ob2o8bo$b2o2bo4b3o
2b2obob2o2bobo4bobo2b2obo2bob3o3b2obo3b3o3bo$4obo5b2o2b2obo5bob2ob2o4b
obo2b2ob2o2b2o3b2o2bobo2b2o$bobo2b2obobob3ob2obobob2ob2o3b4ob4obob2obo
2b2ob2o3bob4o$o3b5o3bobo2bo5bo2b5ob2o5bob2o3b2o2bob4obob4o$ob7obob6o3b
2obo4b7o6b2o6bobobo2b3obobo$3o2b3o2b3obobob2ob2ob3o4b2o3b2o3bo3b2ob5ob
ob3ob2obo$3o2bo2bo4b2o3bo5bobob2ob3o2bob2o4b6o3b5ob2o$3b2o2bo3bo3b6ob
4ob2o3bob2obo4b3o2b2o3b4obobob2o$bobob3obobo6b3obob3o3bob2ob2obob2ob2o
b2obob2o3b2ob2o2bo$o2bob3ob3o3b3o2b5o2bo2b3o5bo3bo4bo8bobo2b3o$b3ob2ob
ob2ob3obobo3b3ob3o2bobob2ob5ob2o2b2ob3ob2obo2bo$b3obob2o2bob2obo3bobob
5obobo3bo4b2o3b2o2bobo2b3obobo$2b2o4bo2bo9bo2bo3b2obo2bob6obo3b6obob3o
3b2o$o3bobobobo2b4ob6o2bobobob2ob3o6b2o3bo3bo2bob3obo$o3b4o2bo4b2obobo
2bobo2bob5o3b2ob2obo2b3o4bobo5b2o$o5b2ob8o2bo2b3obo2b4o2b3obob4obob2o
2bo2bo2bo2b2o$bobobo2bo5bo2b3obobo2b2obo4bo4bobo2b3obob2o2b4o2b3o$5b3o
3b3o3b2ob3o3b5obobob2o4b2o5bob2o2b4obobo$3o2bobo3bob3obob2o2b2o3b3obo
2bo4bob2ob4ob3obobob4obo$b2ob2obo4bo2b3ob4obobob2ob4obobobo2bo4b4o2b4o
2b2o$obobo2b7ob2o2b2o3b2o3b2o8bobo2b2obobob4obob3o2bo$4o4b2o2b2obob2ob
o2bo2bobo2bo2bo2bobob4ob2ob3o2b2ob4obo$o2bob6obo2bo3b3obobo4b2o3bob7ob
2o3bo3b2ob4obo$4b3o5bo2bo2b4obo4bo5bobo3b3o2b2obobo2bobobo5bo$2b3ob4ob
2o3bob2o3b2ob3o2b2o5b6o2b3ob2o3b2ob2o$b2o2b2ob4ob3obo4b3o4b4ob2ob4o2b
4ob3o2b5ob2obo$3b3ob2obo2b2obob2ob2ob4o4b2obo5b5ob3o3b2obobob4o$3ob2o
4b3o4bob5o2b2obo2bo2b4o4bob6obob2o5bobo$2o2b3o2bobo3b3obo3bobobobob2ob
2o2bob4obobobo3bo2b4obo$o2b2obo2bo2b3o3bo2bobob4o4bo2bob2o2bo5b2o2bobo
bob3o2bo$o5bo2bo2b2obobo3b2obobobob2obo5b2obob3o2bo3b2ob2o2bo2bo$b2o3b
ob4o2bo6bo5bo2bo2b6o3b2o2bobob3obob2ob2obo$3ob3o2b3obob2obo2b3ob2o2b4o
bo2bob3o3b5o6b7o$3bob5o2b8o2b4obo2bob4o4bobo2b2o3b2ob2o4bo3bo$2b3o4b2o
3bo3bo2bo3bo2bo5b2o3b2o2b6obob2o2bo3bo2bo$7ob2o2bo2bo5b2o5b2o3b2o2b2ob
obo2bo3b4o3b4o2bo$2bo4b2ob3o2b3obob2obobob3o3b3ob8o2bo4bo3bob4o$ob11o
2b3o3b3o4bob7o2bobobo2b2ob2o2b2obob2ob2o$b5ob3o3bob9o3bo2b2o2b6o2bob3o
b3ob2o2b2obo3bo$bobo2b2ob3o2b4o4bo6bo3b2ob2ob2ob3obo5b3ob5o$ob2ob2o4b
2obo2b2o3bo4bob2obob2obobo3bo2bobo3b2obo2b3o2bo$3obob2o2bo3bo2bo3b2obo
2bobo3b2obo2bob4obo6bo2b4ob3o$bo3b2ob3o2bo2b2o3bobo2b2o4bo6bob2o3b2o4b
o2bo2b4obo$2o4b2obobo4b2o2b3o2b2obobob2o4b4o3b3ob4o2b2obo2bo!

In this rule, find a diehard with a bounding box of at most 64x64 that lasts 1 million generations.

reminds me a bit of when i got a really big selection and generated a 1% soup and then pressed control a and repeated until i got nothing.

[b-engine]

...
- Create a loop in an isotropic rule.
...

NimbleRogue has one:

Code: Select all

# Although it doesn't looks like a loop at all, but it's behavior resembles one
x = 3, y = 4, rule = B3-cnqy4e5kr6n7c/S2-i3-ay4einrtyz5cejn6cin78
o$2o$b2o$2o!

[pipsqueek]

Make the ugliest INT rule. For example, in this rule, the pre-block and the blinker thing don't go together. Making it less aesthetically pleasing.

Code: Select all

x = 44, y = 30, rule = B2c45/S2ae45
3bo35bo$3b2o$35b2o2bo$32bo3bo4bo$32b2o$41bo$37b2o$23bobo12bo$2b2o34bo
3bo$3bo33b2o3b2o$42b2o$42bo3$24b2o$25bo6$15bobo$21b2o$21bo$13bobo3$o2$
o!

[iddi01]

Make the ugliest INT rule. For example, in this rule, the pre-block and the blinker thing don't go together. Making it less aesthetically pleasing.

B0/S does it:

Code: Select all

x = 16, y = 16, rule = B0/S
2o3bo2bob3obo$2o3b2ob2obob3o$bobo2bo2b2obo$2obob2o5bobo$b2o2b4o3bo$2bo
3bobob3obo$b2o2b2o3b2o2bo$o2b4o7bo$4o3b2obobobo$4ob3ob2o2bobo$4ob4o3bo
bo$bo2bo2b2o5b2o$2b3ob3o2bob2o$3o3b3o3bo2bo$5o3b3o2bo$o6b2obobobo!

After a lot of rulegolfing, i finally finished a B-Univ variant that supports...
(viewer graph displaying "loops!")

I tried making an Evoloop-like evolving loop based on it, but it seems to be harder than i thought:

The challenge is obvious: make an Evoloop-like evolving loop based on Rule:B-Loops.

Also, i seem to be the only active member who's interested in loops...

[tommyaweosme]

im trying to learn but to no prevail

[pipsqueek]

Probably impossible, but I bet no one can make a stable rule containing both B1e and B2a.

[tommyaweosme]

Code: Select all

x=0,y=0,rule=b2a/s02c3y4|b1e/s02c3y
!
[[ RANDOMIZE RANDHEIGHT 200 RANDWIDTH 200 ]]

[unname4798]

Code: Select all

x=0,y=0,rule=b2a/s02c3y4|b1e/s02c3y
!
[[ RANDOMIZE RANDHEIGHT 200 RANDWIDTH 200 ]]

No alternating rules allowed!

[tommyaweosme]

aww :(

edit: does pipsqueak agree with this?

[b-engine]

Probably impossible, but I bet no one can make a stable rule containing both B1e and B2a.

Seems that you forgot B0:

Code: Select all

x = 64, y = 64, rule = B01e2a/S3in5ai
!
#C [[ RANDOMIZE ]]																																				#C Added the command above to encourage usage of LifeViewer

EDIT:
Okay here you go, a chaotic "wickstretcher":

Code: Select all

x = 515, y = 2, rule = B01e2a/S3in5ai
2bobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobo
bobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobob
obobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobo
bobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobob
obobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobo
bobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobob
obobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobo
bobobobobobobobobobobobobobobo$o513bo!

Ugh:

Code: Select all

x = 33, y = 272, rule = B01e2a/S3in5ai
8bo$6bo9$2bo$o3bo7$3bo$bo3bo8$4bo$2bo3bo8$5bo$3bo3bo9$6bo$4bo3bo8$7bo
$5bo3bo8$8bo$6bo3bo12$9bo$7bo3bo7$10bo$8bo3bo8$11bo$9bo3bo8$12bo$10bo
3bo9$13bo$11bo3bo8$14bo$12bo3bo8$15bo$13bo3bo7$16bo$14bo3bo7$17bo$15b
o3bo8$18bo$16bo3bo8$19bo$17bo3bo9$20bo$18bo3bo8$21bo$19bo3bo8$22bo$20b
o3bo12$23bo$21bo3bo7$24bo$22bo3bo8$25bo$23bo3bo8$26bo$24bo3bo9$27bo$25b
o3bo8$28bo$26bo3bo8$29bo$27bo3bo9$30bo$28bo3bo!

[b-engine]

(bump)

Find a non-explosive B2a rule where a common non-photon 3-cell spaceship and a fairly common gun exists.
Spoiler: B2a3e/S12-a3e

[pipsqueek]

(bump)

Find a non-explosive B2a rule where a common non-photon 3-cell spaceship and a fairly common gun exists.
Spoiler: B2a3e/S12-a3e

This rule only explodes linearly and a fairly common interaction between stretchers can create a gun

Code: Select all

x = 10, y = 10, rule = B2a3e4iy/S1c2c3e
bob3ob3o$b2o3b4o$3ob5o$o4bobo$3ob5o$obo4b3o$3bo$4o3bobo$obo$4b2obo!

I think the only way to make it not grow infinitely every time would be to B2c, and seems pretty hopeless. The closest I could get was this rule. The smallest c/2 is 4 cells and not very common.

Code: Select all

x = 5, y = 1, rule = B2aci3e/S02ci4e
5o!

[b-engine]

Here's a challenge that i wanted to post a long time ago:

Make a multistate von Neumann neighborhood rule, which behaves identically to CGoL when step size is set to n.

This is my failed attempt with n = 3 (i stopped here due to landing on a rule with lots of types of oscillators):

Did you forgot 0E0P metacell?

[pipsqueek]

I realized that the other challenge, of making a non-explosive rule with both B1e and B2a is impossible, since all patterns contain one of them. So here's another challenge, make a non-explosive rule (without B0) with every B2 transition. Extra points for including B3i or B3a,

[tommyaweosme]

this should be easy enough using birth then survival

b2/ts24

Code: Select all

x=0,y=0,rule=b2/s012345678|b/s24
!
[[ RANDOMIZE ]]

[Aleph]

I realized that the other challenge, of making a non-explosive rule with both B1e and B2a is impossible, since all patterns contain one of them. So here's another challenge, make a non-explosive rule (without B0) with every B2 transition. Extra points for including B3i or B3a,

I'm not sure that taming B1e+B2a is necessarily impossible. I remember some old work on taming B1c; while it was incomplete, it seemed pretty promising. viewtopic.php?f=11&t=5184&p=128032&hili ... er#p128032
Patterns WILL grow forever, but if you can turn everything into space nonfillers, they won't really EXPLODE.

[iddi01]

...here's another challenge, make a non-explosive rule (without B0) with every B2 transition. Extra points for including B3i or B3a.

I've done this a long time ago, this one stabilizes to wickstrechers and very occasionally breeders:

Code: Select all

x = 96, y = 100, rule = B25-an67e8/S1e3-i45678
o2b5ob2o3b2ob2ob2obob3o2bob4obobo2b3o2b2o2b2obob3o2b5o2bobobob7o2bo2b
5o3bo$bob2o5b5ob4o2bob2o3b2o4b3obobob4o4bobobobo2b5ob2ob2o2b5obo4b3o3b
o2b2o$3o2bobobob2o3b2o2b6obob3obo4bob4o3b3obo3b4obo2b2o4b2o2bo2bob5o2b
2obobobo2bo$2obo3b4o6b4o3bo3bo2b2o3b2o2b3obob2ob2o2bob2ob2o5b2o2bob5o
2bo3b2ob3o2bo2bobo$8b4ob2o3bobob2obo3b4obobo5bobob4o2bo4bo2b3obo3b2o2b
4o4bo5b2o2b4obo$obob2o2b2ob3ob4ob3ob4obobob2o2bo3bo4b2ob4obo3bobob3o2b
obo3b5ob2ob2ob2obo3bobo$o3bobo4bob2o2b4o2bo3bo2bo2b4o5bo2bo2bobob3o3bo
bo2b2obo3bob3o3bo2b2o2bo5bob3o$2b2ob4ob7o2b3o5b2o2bob2o3bobobob3o2b3ob
obob3o2b3obobo5b2o2b3ob2ob5o2bobo$bo2bob5o2bobo4bob4obo2bobo4bobo5b3ob
ob2o2bob2o7b3obobo2bo4b2o2b3o2b3ob3o$4bobobo2b2ob3o3bob2o4bob2o2bo2b3o
bo2b3o2b4obobobo2b3obo2b3ob2obo3bo2b3o2b2o2bo2bo$2obo2bob2o2b3o2bob3o
7bo3b6obobo2bo2bo8b2o4bo3b3o2b2ob2o3b2ob5o2bo2b3o$obobo11b3obo2b3o4b2o
b2o2bobo4b5o4b2ob2ob2o4b2o3bo2b2obob5o2b2ob2obo3bo$2o4bo2b4o2bo4bob2o
2bo3bo11b3o2b4o2b5o3bo2bobo2bob7o2bo2b5o2bo4bo$2bo2bobobobobob2o6bo3b
3o2bob2o3bo3b2o2b2ob3obob2obobo2bobob2ob2o2bobo2b3o2bo3b2o3bo$3o2bo2bo
4b3o2bobo2bob4o4b2ob3ob4ob4obobob5o2b3obob4ob2o4b2obob2o6b2obo$4o2bobo
b2obob5obo5b2ob2obob3o2bo2bo6bob3o4b2obob2ob2o2bobo2bobo3bobo2bo3b2ob
2o$5o2b2obob2o2bobo2b2o2bob2obob3o4bo3b2ob2o4bob2o2bobo5bo2b2ob3o2b2o
2bo5bo2bobob2o$obo2bo4b2ob2obobo2bobo2bo3b2o2b2ob5o6b2o4bobo3b2o2bo3b
4ob2o3bo6b4obob3o$5bo2b3o3bob2ob3o5bob2o3b2obob2o2bob4o3bobobo3bo5b3o
2b4ob2obo2b2o3bobob2o2bo$b2ob2obob3ob5o6bo4bob3ob3obo4bo2bo2bo2b2o2b6o
3b3o2b2obob2ob2obo2bo5bob3o$4ob4obob3o2bob5o2bo2bob2o4b2o2b3o6bobob2o
2bob4o2bob2o4b2o2b2obo2bobobo3b2o$ob2o2b3o2bobo3bob2obo6b2o2b2obo2b5o
3bob2obobo2b2o3b3obob2obobobo5b5ob4o3bo$obo3b2o5b2ob2obo3bob2obob3obo
2bo3bob2obobo2b2obob2o5b3o2b3o3bo2b4o4b4obobo2bo$obob3obo4b2ob2o12bob
13o3bobob4obo3bo4bo2bobo4bo3bo3bo3b2o3bo$3o2bo2bo3b3ob3o2b2o3bobobo3b
4o2bob2obo2b2ob5o2b2ob2o2b3o5b3obo4bobobo7b2o$b4o2bobo3b3o3bobobo2b2o
2b2o2b4o2b2o4b6o3bo4b3o3b7o3b4o4b2ob2o4b2o$2bo2b4o2bo4bobo3bo2bo2b5obo
6b4o2b3obo3b3o2b3o3b2ob2o5b2o2b6ob2ob2obobo$obobo3bo2b2obo8b3o2bobo5bo
4b3o2bobob2ob3o3bob2obob2o5bobo2bo3b4ob4obo$b3o2b2o4b2o5bobo2b3o5bo2bo
b4o3b3o3b2o2b4o3b2o3bo3bo2b2o2b3o4b2o2b4obo$2o8bo2bob4o2bo2b3o2b3o9b2o
bob3o2b4obobo3b2ob2o5bo2bo2b4o3bobob4ob2o$o2b3obobobo2b2ob3o4bob2o7b3o
3bob4obo3bo3b5o4b3o5bob3o4bo2bo6b2o$2bob2o2b6o2bob2ob2obo3bobo3bo2b2ob
o3bo3bobo2b2obo3bo2bo3b3ob3obobob2o3bobo2b2o4bo$3b3obobo3bobob2o5b2ob
2obob3o2bo2b3o2bo3b2obob2obo3bo3b2o2bo6b3o2bo4bobobobo2bo$5b2o4b5ob2ob
2ob8ob2o2b4o5bo2bob4o2b2o3b2o5bob2o4bobo3b6o3b3o$o3b2o3bob2ob5o2b2ob3o
2b3obob3o2b2ob3o2bo2b3obo3b2o5b4ob3o2bobob2ob4obob2o3bo$o3bobo2b2ob2o
2b3ob5ob2ob2ob3o2bo2b4ob2o2bobob4ob3o2bo4bob4obob2o2b2o4bo3bobobo$o2b
2o4b3obob3o2bobob2obobo4bo4b3o3b2o3bob2o5bo7bo3bobo2b2ob3ob2ob2ob5obo$
3o3bobo5bo4b2o2bo3bo4b2o2b3o2bobo4bob2o2bobob3o2bobo2bo2bo2b2ob2o3bo2b
4ob3o2bo$2ob2o6bo2b3ob2o2bo5bobo3bob5obo4bobobo3bo3b2obo4bo2b2ob10obob
ob4o$4o2bobob5obob8obo5b3obo4bobob2ob2ob2obo2bobob3ob3ob2o2b3ob4obo4b
3o3bo$bob2o3b3obobob3o5bo2bob2ob2ob3o3bobob2obobobo2b4o3b6o2b5o2b2o4b
2ob3o2b2o2bo$ob2o4bobobo3b4ob2ob2o2b2obo3bo2b2obob3obo2b5ob4o2bo3b3ob
2ob7ob3obo4bob2o$2ob3o2b3obo4b2o2b2ob4obo2bobob2ob2obobo2b2obo3b2obobo
bo4b2ob5o3b4o4bobobob2obo$2ob6o7b2ob2o2bob2obo2bobo3b3obo2bo6bo3b2obob
4o2b2ob2obobob2o8bo2bob2o$bo2b2obobob2ob5obo5bo2b3obob2o2bo3bo2b3obo2b
4ob3obo2bo3bo3b2o2bo5bo3b5o$2obob2o6bo2bobob5o11bobo2bobob2ob2ob2o2bo
3bo3b3o2b5obo5bob3o2bobo5bo$b2o3b2o2bobobo2b2ob5ob2ob3o2bo3bo3bob2o4b
3o4bo3b3ob2ob2o2b5ob2obobo2bo2b2obob2o$b2ob2o2bo2bo3bobob2o2b2ob2ob2o
8b2ob2o2bo3b2obob3o3bo3b3o3bo3b2ob2o3b2o2b3obob3o$bo3bob5o2b3ob4obo4b
5o3bo2bo5bo4bo3bob5obob4o2bob2o2bo4b3o4b2ob3o$2b3o4bobo2b4obo2bobob2ob
2obobo2bo4b2o3bo4b2o7b2obobobo7b2o4b2o2bob3ob4o$bobo2b2ob2o4b2o3b3obob
2obo6bo2bo2b3ob3ob2o3b3o4bo2b2ob3o2b3obo3b5o2bo3bob2o$4bob3o2bob5o2bo
4b2o2bob2o3bo2bo3bo2b3ob3ob4o2bo5bob2ob2obob2o6b4o7bo$3b3o3b2ob2o5b2o
3b2obob2o3b3ob4obobo3b7o2bobobob3ob2ob2o2b3ob3o2bobo5b2obo$obobobobo2b
4o2bo3bob3o3b5o2b6o4bob3o2b4o3bobo7bo2b3o4b3o3bo2bob3obo$ob2o3bobobobo
2bo3bob3o2b4o2b3ob3obobo2bobob3obob4o3b2ob3obo4bobo2b2o6bob3o$o2b7o2bo
bo5bo2bob2obo2b2o2bo5b4ob2o2b2o4b6obo3b2o4bob12obo5b2o$3ob3obobo2bo4b
2obob2o2b3o5bob3o4bob2obob2o2b3o2b2o2bob6o2b3o2b6ob2ob2ob2o$b3ob3o3b3o
6bob4o4b3o3b5obobob3o3b2o5b5ob3o2b2o2b2ob3o5bo2b2obobo$2o4b3o3b3o6b3ob
obo2b5o4bob2o2bo2bo4bobo2bobobo7b3ob2obo2bob5ob2obo3bo$ob2ob2obobobo2b
ob2obo2b4obo2b2obobo3b3o2bo2bobobo3bo2bob2obo2b2obo2bo2bo2bob3o10bo$7b
obob3o5b4ob2o2b3o5b4obob3o2b3obo3bob4ob2obobob2o2b2obob2o3bo3b2ob2o2bo
$b5ob3o5b2o2b2ob2o2bo3bob2o3b2ob5o4bobo2bob2o3bo4bobo2b2obo2bobobobob
2o2b2obo$2obob2obobobob5ob3ob2obo3b6o2b5ob2ob3o2bo2bo2bobobo2bo4bobo3b
o2b2o10bobo$2bo2b4o2b5ob2o3b2o4b2o2b3ob2obob3obo2b3o2b2o2bobobobobobob
o3b2obobo2bobobo2b2obob2o$2ob5o2b3ob3o3b3ob2o5b2ob2o2b2o2bo2b2o2bo2b2o
2bo2bobobo4bobo2bob2obo5bo2b6obo$o2bo2bo3bobo2bob3o2bo2bo5bobobo2bo3bo
bob5o3bobob6o2b2ob3obob5o2b3ob3obo2b3o$o2bo3b5ob2obo3bo5bob2obo3bob2o
2bobobobobo6b2ob4obob2o2b2o2bo3bobo2bob2o3b2ob2o$obob2ob4o2bo2bob2o2bo
b2obob3obob2o6b2ob2o3b2obo3bo2bo3bo3b2o7bo2bob2o2b2obob2obo$ob3o2b3o3b
2ob3o2b3o4b2o2bobo2b3o4bo2bobo3b3o4b3o2bo2bo2bob4ob5obo3bobo2b2o$2o3bo
bo2b5ob3ob2ob3obobo4b4obob2o2b5obob2o2bo3bobob2ob3obob2obobo3bo2bobob
4obo$3bo3b6ob2ob4o5bobo7bo3bo2b2o2b3o2b2o3b2o2b2ob2o4b2o4b2o4b4ob2obo
3bo$2b3o2b3o3b2o2bo2bo2bob2obo7bob2obob2o3bobo2bobob2ob2obob2o4b3obob
4o2bo3bo2bo2bobo$bo2bobo2b3ob2ob2o4bo6b3obo3b2ob3obobo3b2o2b2o3bobo5bo
b2o5b6ob2o2b4obo2bo$o3bo4bob3obo3bo3b2o2b2obo3b2ob2ob2obo3bo2b2obobo3b
3ob2ob2o5b2o2b3obo7bo2b4o$o3bob5ob2obo3bobob4obob2obobo2bo2b3obo3bo3bo
2bobobob8o2b2o3b2o3b3o3bo2b2o$3bo5b3obo3bo6bo3bob5ob2o2b2obo3bob2obo5b
5obo3bobobo2bob2ob2ob2obobo2b5o$o2bob2o2b6o5bo3b4obobob2o2b3o2bo2b6o2b
4o5b2ob2o4b2obob5ob4ob3ob2ob2o$obobob5o2b4o2b2o3bob3obob2o2b3o2b2obobo
b2ob5ob3o2bobobob2obo4bo8b2obob2ob3o$b2o4b2o6bob3o2bobo2b2obobo2bob2ob
2obob3obo4b3ob2o2b3o3bo2b12o4b3o3b2o$3obo2b6o3b4ob5o2bob6o2b2o3bob2o2b
5ob2o2bo3bo4bo2b3ob5ob2ob3obo3b2obo$3b3o8bobob4ob3o3bo7bo3bobob2obobo
2b2ob2o6b2obo2b3o3bob2ob2o2bo2b2o2b2obo$obo3b3o2bob2o2bo5b3o2bobo5bo2b
4o2bob2ob2ob3o2bobobo2bobo3b2obobo5bo2b2obo2b2o2bo$ob3ob2o2bob2ob3o2b
2ob2obob2obo4bobob2o2b2obob3obo2bobo2b3o2bob3obo3bo4b12obo$bobobobo2bo
2bob2o2bo2bobo6b3ob5o5bo4b2o5bo5bo2b2o2b3o3bob2obo2b2ob6o$2o2b2o2b2o2b
o3b6o2bo2b2obo4bo4b6o3b2obobo4bo2bo3bob3obob6ob3o2bo2bo3b2o$6o2b3o4bo
2bobob2o4bob2o2bobo2b3obobo2bob2ob4o2b3o3bo2bob5o2bo2bob2obo3bo2b3o$2o
2b2o2bo2b2ob2o5bobo2bobo3bob3obo2bo4bobo6bo3bo3bobobobobob2o4b6o4b2ob
4o$obo2bo2b3obo2bo2bo2bo2bobo5b2o5b2o2bobo5bo3bobob2ob7o3bobo2bo2bo4b
3o2bobobo$b6o2b13o3b2obo2bob4obo2b2o2bo2bobob3o2bobo2b5o2b3o4bob3o2b3o
4b3ob2o$bob2obobo3b2o5b3o4b2ob3obobo3bob2obo2b2o3bo2b3obo4b2ob2o2bob4o
2b3o4b2ob2obobo$3obo2b8obo5b2o2bo6bob5o5b3o4b2obo3bobo3b3obo3bob5o2bo
2bo4bobo2bo$bob2ob2o3bob3obobo2bobo2bobo2b4o2bo2b5o2bo2b2o2bo2b2ob2o5b
2ob2o2b4ob2o3b3obob2ob2o$2b4o3bobo5b2ob2o6b2ob2o4b3o5bo4b2o4bob2o5bob
3o2bo4bobob3o3b3obobo$o2bo3b7o2b3o2bobo2bobob5o3b3o2bobo3bo6bo2b2ob2o
3bobo5b2ob3o2bo3bobobo2bo$b2o3bobob2o3b2obobo4bo3bo3b2ob3o2b4o3bobob2o
3bo2b2obobo2b3o2bo2bobobobob4ob4ob2o$bo2b2o3bob3o3bo4b2o5bobo2b2ob2ob
5o2bob3o2bo3b10obob2obob5ob2o3b2o2bob3o$bob2o2b3o2b2o3b2ob4o2b3obo2bo
3b2o2b2o5bo2bo2b4o2b3o4bobobob2obo2b3obob3ob2obob2o$obobo2b5o2bobobobo
bobob2obobo2b4ob2o2b4o2b3obo2b2obo2bo3bob2obo6b2o2bob3obob2o2bo$ob2o3b
2obo2bo2bo3bo3b2ob2o2b2ob4o3b2o3b3o3bobo3b2obo3b3o3b4obo2b8o2bobo2bo$b
3ob2o3bo2bo3bo2b7ob2o2b2o3b2ob2ob3o3bobobobobob3o6b2obobobobo2bobob3ob
6obo!

Did you forgot 0E0P metacell?

I mean using single cells (not metacells) in a von Neumann neighborhood rule (not CGoL) to emulate CGoL (not a von Neumann neighborhood rule).

100592M, bounding box 4x9, population 14. Very small but incredibly powerful:

Code: Select all

x = 4, y = 9, rule = B35cek6e/S23-k4i
3o$o2bo$3bo$2o$o2bo2$obo$bo$bo!

New challenge: Find a better methuselah than the one above in B35cek6e/S23-k4i.

[tommyaweosme]

Code: Select all

x = 8, y = 6, rule = B3/S23
6bo$4bob2o$4bobo$4bo$2bo$obo!

this one in life goes past 10k gens. havent bothered to ran further

[tommyaweosme]

Here's a challenge that i wanted to post a long time ago:

Make a multistate von Neumann neighborhood rule, which behaves identically to CGoL when step size is set to n.

use isotropic r2 von neumann for better luck

2-state is multistate after all

Code: Select all

x = 8, y = 8, rule = R2,C2,S10-19,B15-19,NW0010005550150510555000100
!
[[ RANDOMIZE RANDHEIGHT 16 RANDWIDTH 16 ]]

[iddi01]

^
|
|
A still life is endemic when every possible 3x3 configuration of cells have occured in the pattern and thus only works in B/S012345678.

The still life you build is not required to be strict, in fact strict still lives cannot be endemic since it's impossible to achieve S0 in that situation.

Here's an example of a endemic still life, paste the pattern into https://catagolue.hatsya.com/object and click Identify, and it should say that it's endemic:

Code: Select all

x = 21, y = 24, rule = B/S012345678
7b2ob3o$5b4obobo$8bob3o$4bo3bo$4b2ob2ob3o$4bobo6bo4b3o$2bo3bobob2o7b2o$3obo2b
obob2o2bo2bo$3o2bo4bobo2bobo$3obo2b5obobobobo$2o2bo2bo3bob7o$bobob3obobo2b2ob
o$2bobo2bo3b3obo$bobo2b6ob3o$bo3b3o2bobo$b11o$2b3o2bo$2b2obobo3b2o$2b2o5b3o$
4b2o2b2ob4o$6b3o4b3o2bobo$6bo6bob2obobo$15b5o$16b4o!

When you start building your own (or optimizing the above still life), you can check if it's endemic using the same way as you checked the above still life. If it doesn't say it's endemic, it will specify a range of rules so you know which configurations you're missing.

When you post your endemic still life (in here), specify if it's optimized for population or bounding box.

[tommyaweosme]

challenge 2: make it endemic for every anisotropic rule too

[confocaloid]

[...]
A still life is endemic when every possible 3x3 configuration of cells have occured in the pattern and thus only works in B/S012345678. [...]
Here's an example of a endemic still life, paste the pattern into https://catagolue.hatsya.com/object and click Identify, and it should say that it's endemic: [...]

Actually, the feature "Identify" on the linked page doesn't check whether or not every possible 3x3 configuration of cells occurs in the given pattern.
Instead, it checks whether or not some orientation (rotation and/or reflection) of every possible two-state 3x3 configuration of cells occurs in the pattern.

In other words, there are already at least two distinct problems, with 'endemic' understood relative to a specific rulespace:
(1) find a still life that is endemic to the cellular automaton "Nothing happens" (B/S012345678) relative to the 2-state isotropic R1 Moore rulespace, (this can be checked using the form on the page https://catagolue.hatsya.com/object)
(2) find a still life that is endemic to the cellular automaton "Nothing happens" relative to the full 2-state R1 Moore rulespace.

[confocaloid]

Object-specific challenge: is there a single-engine p62 Herschel factory with the following engine (without adding any other oscillators whose periods exceed 2)?

Code: Select all

x = 38, y = 36, rule = B3/S234c
10bo14bo$10b3o10b3o$13bo8bo$12b2o8b2o4$20bo$19b3o14b2o$14bo3b2obo15bo
$2o13bo18b3o$bo12bo19bo$bobo28bobo$2b2o14bo13b2o$8b2o8b2o4bobo$7b2o16b
o$8b2o4bo$9bo3b2o$21b2o3bo$21bo4b2o$10bo16b2o$9bobo4b2o8b2o$2b2o13bo$
bobo$bo19bo$2o18bo$14bob2o3bo$14b3o$15bo4$12b2o8b2o$13bo8bo$10b3o10b3o
$10bo14bo!