Rules where the background isn't a vacuum

For discussion of other cellular automata.
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hotdogPi
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Posts: 2267
Joined: August 12th, 2020, 8:22 pm

Rules where the background isn't a vacuum

Post by hotdogPi »

In Thread for your unrecognized CA, I posted a rule where zebra stripes is the intended background, B123/S12358. Contrary to what I posted there, it is explosive at larger soup sizes. I will repost the two RLEs from that post:

Typical "small" non-explosive soup

Code: Select all

x = 100, y = 100, rule = B123/S12358:T100,100
100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o
2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o$33b
o2b3o2b3ob3ob2ob2ob3o$34o2bob2o2b2o2b2o3b49o$31b3o2bo2bobo2bobob7o$33o
b4o3b4o2bo2b4o4b42o$31bobo3bobob2o3bob2o2b2ob3o$31obob7o2b4o2bob4o2b
43o$31bob6o2bo2bob2o2bo2b2ob2o$31o3bo2b2ob5o2b2o7b44o$33bo3b4o2b3ob2ob
4o$31ob2o2b2o2bob3o5b2ob47o$31b3ob5ob2o4bobob2obo2bo$31o2bo4b2o3b2o2b
6obo2b43o$33b4ob3o2b8o5bo$32o3b3obo4bobob2o3bo2bob42o$33bob3obobobob4o
3b5o$32o2b2obobob2ob2o5bo3bob43o$32b3o2b3ob2o2bo2b2o6b2o$31o2b2o2b2o4b
obo7b3o2b42o$33b3o3bo3b4ob2obo2bob2o$31o3bob5o2bobob6o4b43o$31b2o6bo2b
2o3bo2bo4b3o$31obob5obob3ob5obobobob42o$35bob2o2bobo2bob2o2b2o3bo$38o
2bo3b2o2bob4ob45o$32bobo6b4o4b3o2bo$32obobob2o2b2obo2bo2b2o2bo2b43o$
31bobo4bo2bo4b3ob3obo2bo$34obobob2obob3o5b4o2b42o2$100o2$100o2$100o2$
100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o!
2c/6 against the grain

Code: Select all

x = 60, y = 54, rule = B123/S12358:T60,54
60o2$60o2$60o2$60o2$60o2$60o2$60o2$60o2$60o2$60o2$60o2$60o2$60o2$60o2$
60o2$60o2$60o2$60o2$60o2$60o2$60o$32b3o$33ob26o$31b5o$33ob26o2$60o2$
60o2$60o2$60o!
Adding B8 to this rule definitely removes the explosivity, but it has the disadvantage that it often leaves large patches of opposite-direction zebra stripes, disrupting the agar. I feel like agar restoration is a very desirable property.

Here is another example of a zebra stripes rule, which I first found on 8/21/21. You can see the c/4 with-the-grain clearers, which I have only ever seen in pairs.

Code: Select all

x = 100, y = 100, rule = B124/S01234:T100,100
100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o
2$100o2$100o2$100o2$100o2$100o2$100o2$28ob4o2b2obob3ob4ob2ob2o8bob36o$
29bob2o2b2ob3ob2obobob3o2bobobo4b2o$27o3b3o3b2o2b2obo2bo3bob4ob2ob3o2b
35o$30bob2o2b2o4b2ob4o3b3obo2bo3bo$29ob2obo2bobob2ob2obo2bob2o2b3o7b
35o$27b3ob2ob3o2bo2bob2ob2ob3ob2o3b2o3bo$27o4bo4bo3b3obo4bo2bobo2bo2bo
2b37o$29bob3ob3o2bo2b2o2bob3obo2b2o3bob2o$28o2b2o3bob2o2bobobobob5ob4o
3b38o$27b2o9bo2b3ob2o4bobob2o$27obobo3b2ob3obobobob3o4b2o2bobo2bob35o$
28bobo2bobo2b2o2b2ob2obob3o2b2o2b2ob3o$27o3bobo2bo3bob4obob2o2bobobo3b
40o$27b4o3b6o3b4o3b2obo2bob2ob2o$27o3bobo2bob2obobobob2ob4o3bob3o2bob
35o$30bob4obob5ob4o2b2ob2obo4b2o$28o2b2ob3ob3ob2obo2bobo3bo7b39o$29bo
2bobo2bobo2bo2bob3o2bo2bo2b4o2bo$28ob2obo2b2o3b2obo6b4ob2o3b2ob37o$27b
4ob2ob2o2b2obob2o4b2obobobobobo2bo$27o2bo2b5o6bobo2b2o2bob2obob2o2b37o
$29bo2bob2o2b5obobobobo3b2obob3obo$28o3bob3o2bob2ob2obob2o3bob2ob2ob3o
b35o$28b2obobo2b3o2bob2o2bo2b4obobo2b3obo$28obob2ob2obob4o3bobo2bo2b3o
3b2obob35o$27b2o2b2ob2o2b5o2b2ob3o3b5obob2o$29obobob2o3b5o3b3o3b2o2bo
2b40o$30b2o2b3obob2o2b2o3bob2o7bo3bo$29ob2o5bobo2bobobo4b6ob2obob37o$
28b4o3b2ob3o6bo5bo2bob2o2bo$34obobobo2b3o2b2o3bo3b2ob3o3b35o$27bobo3bo
2b3o2b2obo2b3obo8b3o$30o3bobobo2b3ob3ob3obob2obo2b40o$27b3obobo2bob4ob
3obo5bo5bo2bo$28obo2bobo2bo2bo3bo2bobobobobo2b4o3b35o$28b2o3b3o2bob4ob
o7bob2obo3bo$27obo2b3o2b2obobo3bob5obob2ob3o2bob35o$32b2ob2o4b2ob2o4b
3o3bob2ob2obo$29o5bob6obo2b2ob2ob3o2bo2b2obob35o$32bobo2bobo2b3o4b4o2b
ob2o$30obob6obobo2b3ob2o6b6o2b35o$29b2ob2obob3o3bobob4ob2ob2ob3obobo$
100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o2$100o!
3/24/2026: c/3 with the grain in B45/S23458 (itself a good rule; sylvani suggested B45/S2345 to me). Unfortunately, this family of rules is prohibited from expanding against the grain.

Code: Select all

x = 48, y = 40, rule = B45/S23458:T48,40
48o2$48o2$48o2$48o2$48o2$48o2$48o2$48o2$48o2$48o$26b3o$26o3b19o$25bo2b
o$26o3b19o$26b3o$48o2$48o2$48o2$48o2$48o2$48o2$48o2$48o!
c/3 with the grain in B458/S2345

Code: Select all

x = 40, y = 28, rule = B458/S2345:T40,28
40o2$40o2$40o2$40o2$40o2$40o$13b3o4b5o$13o3bo3bo2b17o$13b3o4b5o$40o2$
40o2$40o2$40o2$40o2$40o2$40o!


EDIT: Here is a 600×600 zebra stripes just to copy and paste from just so you don't have to recreate it manually.

Code: Select all

x = 600, y = 599, rule = B3/S23:T600,600
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$
600o!
User:HotdogPi/My discoveries

Periods discovered:

All evens ≤128 except 52,58,78,82,92,94,98,104,118,122

5-15,㉕-㉛,㉟㊺,51,63,65,73,75
1㊳㊵㊹㊼㊽,54,56,72,74,80,90,92
217,240,300,486,576

Guns: 20,21,32,54,55,57,114,117,124,126
SKOPs: 32,74,76,102,196
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R2INT
Posts: 811
Joined: July 2nd, 2024, 7:42 pm

Re: Rules where the background isn't a vacuum

Post by R2INT »

I have also investigated some isotropic "agar" rules. For example, here is a p76 2-barrelled gun I constructed in one of these rules:

Code: Select all

x = 47, y = 45, rule = B2cen3acijk4-einqr5cein6-an/S2cek3ckny4jnqtw5aik6cen78
obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobob
obobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobob
obobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobo2bo2bo
bobobobobob2o2bobobobobobobobobobobo$22bobo$obobo2bo2bobobobobobob2o2b
obobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobob
o2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobo
bobobobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobo
bobobobobo2$obobobobobobobobobobobobobobobobobo3bobobobobo$35b3o$obob
obobobobobobobobobobobobobobob5obobobobo$35bobo$obobobobobobobobobobo
bobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobo
bobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobob
obobobobobobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobob
obobobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obo
bobobobobobobobobobobobobobobobobobobobobobo$36bo$obobobobobobobobobo
bobobobobobobo7bobobobo$36bo$obobobobobobobobobobobobobobobobobobobob
obobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobo
bobobobobobobobobobobobobobobobobobo!
Further experimentation results in a 1-barrelled gun:

Code: Select all

x = 47, y = 43, rule = B2cen3acijk4-einqr5cein6-an/S2cek3ckny4jnqtw5aik6cen78
obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobob
obobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobob
obobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobo2bo2bo
bobobobobob2o2bobobobobobobobobobobo$22bobo$obobo2bo2bobobobobobob2o2b
obobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobob
o2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobo
bobobobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobo
bobobobobo2$obobobobobobobobobobobobobobobobobobobobobobobo$36b3o$obo
bobobobobobobobobobobobobobobobo2bo2bobobobo$37bo$obobobobobobobobobo
bobobobobobobobo2bo2bobobobo$37bo$obobobobobobobobobobobobobobobobobo
bobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobob
obobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobobobobob
obobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobob
o2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobo
bobobobobobobobobo5bobobobo$36bobo$obobobobobobobobobobobobobobobobob
o5bobobobo2$obobobobobobobobobobobobobobobobobobobobobobobo!
The smallest known linear growth pattern in this rule is a wickstretcher:

Code: Select all

x = 13, y = 53, rule = B2cen3acijk4-einqr5cein6-an/S2cek3ckny4jnqtw5aik6cen78
obobobobobobo2$obobobobobobo2$obobobobobobo2$obobobobobobo2$obobobobo
bobo2$obobobobobobo2$obobobobobobo2$obobobobobobo2$obobobobobobo2$obo
bobobobobo2$obobobobobobo2$obobobobobobo2$obobobobobobo2$obobobobobob
o2$obobobobobobo2$obobobobobobo2$obobobobobobo2$obobobobobobo2$obobob
obobobo2$obobobobobobo2$obobo3bobobo$5b3o$obo7bobo$6bo$obobo3bobobo2$
obob2ob2obobo2$obob2ob2obobo2$obobobobobobo2$obobobobobobo!
A long-lived pattern to demonstrate the rules' dynamics:
R2INT wrote: January 13th, 2025, 6:05 pm [...]

Code: Select all

# 213202M
x = 16, y = 16, rule = B2cen3acijk4-einqr5cein6-an/S2cek3ckny4jnqtw5aik6cen78
b2o2b5obo2b2o$2bobob2obob2o$bo2b8o3bo$o3b2o6bob2o$bo3bo2b3o$2b2o2bo3b
obobo$2b2o2b4ob2ob2o$6b2ob2o$2o5bobo2bo$o2bob3o2bo3bo$3b3o2bob2o2bo$2b
obobobobobob2o$2ob3ob2ob2o2b2o$3o2b3ob3obo$3o6b2o3bo$3b2o2b2o2b5o!
[...]
The spaceship collection includes two c/2o ships, a c/7d ship, and a (3,1)c/9 camelship:

Code: Select all

x = 57, y = 21, rule = B2cen3acijk4-einqr5cein6-an/S2cek3ckny4jnqtw5aik6cen78
obobobobobobobobobobobobobobobobobobobobobobobobobobobobo2$obobobobob
obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobob
obobobobobobobobobobobobobobobobobobo2$obobobobobobobobobobobobobobob
obobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobob
obobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobobobob
obobobo$30bo11bo$obobobobobobo2bo2bo2bo2bobo2bob2obobobo2bobo2bobobob
obobo$14bobo3bobo5b2o10b3obo$obobobobobobo5bobobobobo2bo2bobobobo4bob
2obobobobobo$43b2o$obobobobobobob3obob3obobobobobobobobo4bo2bobobobob
obo2$obobobobobobobobobobobobobobobobobobobobobobobobobobobobo2$obobo
bobobobobobobobobobobobobobobobobobobobobobobobobobo!
Range-2 INT
R2INT's Rule Collection

Travelling Ts has surpassed LeapLife in post count, but not yet in technology.
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B468S02357
Posts: 449
Joined: December 30th, 2025, 9:23 pm

Re: Rules where the background isn't a vacuum

Post by B468S02357 »

R2INT wrote: March 25th, 2026, 12:59 pm:

Further experimentation results in a 1-barrelled gun:

Code: Select all

x = 47, y = 43, rule = B2cen3acijk4-einqr5cein6-an/S2cek3ckny4jnqtw5aik6cen78
obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobob
obobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobob
obobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobo2bo2bo
bobobobobob2o2bobobobobobobobobobobo$22bobo$obobo2bo2bobobobobobob2o2b
obobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobob
o2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobo
bobobobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobo
bobobobobo2$obobobobobobobobobobobobobobobobobobobobobobobo$36b3o$obo
bobobobobobobobobobobobobobobobo2bo2bobobobo$37bo$obobobobobobobobobo
bobobobobobobobo2bo2bobobobo$37bo$obobobobobobobobobobobobobobobobobo
bobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobob
obobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobobobobob
obobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobob
o2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobo
bobobobobobobobobo5bobobobo$36bobo$obobobobobobobobobobobobobobobobob
o5bobobobo2$obobobobobobobobobobobobobobobobobobobobobobobo!
I have made an SMS breeder off it

Code: Select all

x = 47, y = 75, rule = B2cen3acijk4-einqr5cein6-an/S2cek3ckny4jnqtw5aik6cen78
obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobob
obobobobobobobo5bobobobo$36bobo$obobobobobobobobobobobobobobobobobo5b
obobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobo
bobobobobobobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobo
bobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$ob
obobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobobob
obobobobobobobobobobobobo$37bo$obobobobobobobobobobobobobobobobobo2bo
2bobobobo$37bo$obobobobobobobobobobobobobobobobobo2bo2bobobobo$36b3o$
obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobob
obobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobob
obobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobo
bobobobobobobobobobobobobobobobobobo2$obobo2bo2bobobobobobob2o2bobobo
bobobobobobobobo$22bobo$obobo2bo2bobobobobobob2o2bobobobobobobobobobo
bo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobob
obobobobobobobobobobobobobobobo2$obobo2bo2bobobobobobob2o2bobobobobob
obobobobobo$22bobo$obobo2bo2bobobobobobob2o2bobobobobobobobobobobo2$o
bobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobobo
bobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobo
bobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobob
obobobobobobobobobobobobobobobobobo$36b3o$obobobobobobobobobobobobobo
bobobobo2bo2bobobobo$37bo$obobobobobobobobobobobobobobobobobo2bo2bobo
bobo$37bo$obobobobobobobobobobobobobobobobobobobobobobobo2$obobobobob
obobobobobobobobobobobobobobobobobobo2$obobobobobobobobobobobobobobob
obobobobobobobobo2$obobobobobobobobobobobobobobobobobobobobobobobo2$o
bobobobobobobobobobobobobobobobobobobobobobobo2$obobobobobobobobobobo
bobobobobobobobobobobobobo2$obobobobobobobobobobobobobobobobobo5bobob
obo$36bobo$obobobobobobobobobobobobobobobobobo5bobobobo2$obobobobobob
obobobobobobobobobobobobobobobobobo!
New rule: VerticalThroughStripes
Soups turn into perpendicular bands, also there's a p2 c/2 wtgship

Code: Select all

x = 600, y = 599, rule = B01234acertz5i6e7c8/S0123-a4cqz5-jkn67c8:T600,600
600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$284o2b314o
$283bo$284o2b314o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o2$600o
2$600o2$600o2$600o!
I was born on march 23 (3/23). I was destined to be here, and here i am.
Check out my bird-brained biblioraphy if you're interested.
Big fan of crawler ships
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hotdogPi
Moderator
Posts: 2267
Joined: August 12th, 2020, 8:22 pm

Re: Rules where the background isn't a vacuum

Post by hotdogPi »

More zebra stripes: sylvani posted this 2c/5 against the grain in B3/S123 on Discord. The rule itself seems to be a decent one, too: can expand in either direction, non-explosive, restores stripes in the same direction without large patches of opposite-direction stripes.

Code: Select all

x = 30, y = 36, rule = B3/S123:T30,36
30o2$30o2$30o2$30o2$30o$13bo5bo$12o3b3o3b9o$11bo2bo3bo2bo$11o2b2o3b2o
2b8o$11b2o7b2o$12o9b9o$11bo9bo$11o11b8o$10bo11bo$10o13b7o$10bo11bo$14o
5b11o$12b2o5b2o$11o2b2o3b2o2b8o$11bob2o3b2obo$12obo5bob9o$11bo9bo$11ob
4ob4ob8o$11bo4bo4bo$30o2$30o2$30o2$30o!
User:HotdogPi/My discoveries

Periods discovered:

All evens ≤128 except 52,58,78,82,92,94,98,104,118,122

5-15,㉕-㉛,㉟㊺,51,63,65,73,75
1㊳㊵㊹㊼㊽,54,56,72,74,80,90,92
217,240,300,486,576

Guns: 20,21,32,54,55,57,114,117,124,126
SKOPs: 32,74,76,102,196
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