b35s238

[Colonizor48]

An interesting rule on the boundary between complexity and simplicity. With 2 gliders known(https://catagolue.hatsya.com/census/b35s238/C1)
My question is how many spaceships does this rule have? Are there more then 2 that could be found with apgsearch? Are there glider guns? note most patterns quickly decay into still lifes

[Colonizor48]

this rule is very quick to search. If anyone wants to search it feel free to. Together i think we can discover a 3rd spaceship

[confocaloid]

This 5c/37o (according to a Catagolue comment, it is known as Eppstein's glider 8214) appeared in the D4_+2 census.

Code: Select all

x = 9, y = 9, rule = B35/S238
b3o$ob2o4bo$b2o4b2o$bo5bo2$bo5bo$b2o4b2o$ob2o4bo$b3o!

This c/2o (Eppstein's glider 4716, also works in B35/S23) appeared in D2_+1:

Code: Select all

x = 7, y = 7, rule = B35/S238
2b3o$b2ob2o$2o3b2o$b2ob2o$b5o2$2bobo!

A c/6o spaceship:

Code: Select all

x = 11, y = 26, rule = B35/S238
4bobo2$4b3o3$4bobo$4bobo$4b3o$3bo3bo$3bo3bo$4bobo$3bo3bo$3b5o2$3bo3bo$
4b3o2$2b3ob3o$2o7b2o$o3bobo3bo$bo7bo$2b3ob3o$4bobo$bob2ob2obo$2bobobob
o$3b2ob2o!

Edit: this post lists several other known speeds.

If a gun exists, probably it would be hard to find (unless you're lucky). The most common spaceship (2c/5o = Eppstein's glider 3736) has 351 090 occurrences in 2 414 101 395 soups in b35s238/C1 - approximately 1 occurrence in every ~6900 soups.

[Colonizor48]

This 5c/37o (according to a Catagolue comment, it is known as Eppstein's glider 8214) appeared in the D4_+2 census.

Code: Select all

x = 9, y = 9, rule = B35/S238
b3o$ob2o4bo$b2o4b2o$bo5bo2$bo5bo$b2o4b2o$ob2o4bo$b3o!

This c/2o (Eppstein's glider 4716, also works in B35/S23) appeared in D2_+1:

Code: Select all

x = 7, y = 7, rule = B35/S238
2b3o$b2ob2o$2o3b2o$b2ob2o$b5o2$2bobo!

A c/6o spaceship:

Code: Select all

x = 11, y = 26, rule = B35/S238
4bobo2$4b3o3$4bobo$4bobo$4b3o$3bo3bo$3bo3bo$4bobo$3bo3bo$3b5o2$3bo3bo$
4b3o2$2b3ob3o$2o7b2o$o3bobo3bo$bo7bo$2b3ob3o$4bobo$bob2ob2obo$2bobobob
o$3b2ob2o!

Edit: this post lists several other known speeds.

If a gun exists, probably it would be hard to find (unless you're lucky). The most common spaceship (2c/5o = Eppstein's glider 3736) has 351 090 occurrences in 2 414 101 395 soups in b35s238/C1 - approximately 1 occurrence in every ~6900 soups.

Could there be any diagonal c/2 spaceships in this rule?

[LaundryPizza03]

This 5c/37o (according to a Catagolue comment, it is known as Eppstein's glider 8214) appeared in the D4_+2 census.

Code: Select all

x = 9, y = 9, rule = B35/S238
b3o$ob2o4bo$b2o4b2o$bo5bo2$bo5bo$b2o4b2o$ob2o4bo$b3o!

This c/2o (Eppstein's glider 4716, also works in B35/S23) appeared in D2_+1:

Code: Select all

x = 7, y = 7, rule = B35/S238
2b3o$b2ob2o$2o3b2o$b2ob2o$b5o2$2bobo!

A c/6o spaceship:

Code: Select all

x = 11, y = 26, rule = B35/S238
4bobo2$4b3o3$4bobo$4bobo$4b3o$3bo3bo$3bo3bo$4bobo$3bo3bo$3b5o2$3bo3bo$
4b3o2$2b3ob3o$2o7b2o$o3bobo3bo$bo7bo$2b3ob3o$4bobo$bob2ob2obo$2bobobob
o$3b2ob2o!

Edit: this post lists several other known speeds.

If a gun exists, probably it would be hard to find (unless you're lucky). The most common spaceship (2c/5o = Eppstein's glider 3736) has 351 090 occurrences in 2 414 101 395 soups in b35s238/C1 - approximately 1 occurrence in every ~6900 soups.

Could there be any diagonal c/2 spaceships in this rule?

No. The speed limit is c/4 diagonal, or c/2 orthogonal. c/2d requires B1e or B2a. If you are interested in finding speceship speeds, I'd recommend using ikpx2 or rlifesrc, and perhaps the best starting point in this rule would be c/5d, c/6d, or 2c/7o.

There's also this 196c/392o puffer from apgsearch:

Code: Select all

x = 22, y = 10, rule = B35/S238
18bo$2bobo9b4o2bo$2bo11bo6bo$b3o2bo4bo2bo6bo$o3b3o3bobo2bo2bob2o$obo2b
obo2bobo4b3o$3o2bob2o$4bo2bo$6bo$4b2o!

You can overview other known results at the Catagolue censuses.

EDIT: To answer your other question in the apgsearch thread, we have only this c/4d:

Code: Select all

x = 11, y = 11, rule = B35/S238
5b2o$5bobo$4bo2bo$bo2b2ob3o$bo2b3o3bo$bo3b3ob2o$3bo2b3o$3b2o$o$o4b3o$
3o!

[Colonizor48]

This 5c/37o (according to a Catagolue comment, it is known as Eppstein's glider 8214) appeared in the D4_+2 census.

Code: Select all

x = 9, y = 9, rule = B35/S238
b3o$ob2o4bo$b2o4b2o$bo5bo2$bo5bo$b2o4b2o$ob2o4bo$b3o!

This c/2o (Eppstein's glider 4716, also works in B35/S23) appeared in D2_+1:

Code: Select all

x = 7, y = 7, rule = B35/S238
2b3o$b2ob2o$2o3b2o$b2ob2o$b5o2$2bobo!

A c/6o spaceship:


Edit: this post lists several other known speeds.

If a gun exists, probably it would be hard to find (unless you're lucky). The most common spaceship (2c/5o = Eppstein's glider 3736) has 351 090 occurrences in 2 414 101 395 soups in b35s238/C1 - approximately 1 occurrence in every ~6900 soups.

Could there be any diagonal c/2 spaceships in this rule?

No. The speed limit is c/4 diagonal, or c/2 orthogonal. c/2d requires B1e or B2a. If you are interested in finding speceship speeds, I'd recommend using ikpx2 or rlifesrc, and perhaps the best starting point in this rule would be c/5d, c/6d, or 2c/7o.

There's also this 196c/392o puffer from apgsearch:

Code: Select all

x = 22, y = 10, rule = B35/S238
18bo$2bobo9b4o2bo$2bo11bo6bo$b3o2bo4bo2bo6bo$o3b3o3bobo2bo2bob2o$obo2b
obo2bobo4b3o$3o2bob2o$4bo2bo$6bo$4b2o!

You can overview other known results at the Catagolue censuses.

EDIT: To answer your other question in the apgsearch thread, we have only this c/4d:

Code: Select all

x = 11, y = 11, rule = B35/S238
5b2o$5bobo$4bo2bo$bo2b2ob3o$bo2b3o3bo$bo3b3ob2o$3bo2b3o$3b2o$o$o4b3o$
3o!

Sorry for like the 5th question but what would be a good program for finding a spaceship gun?

[yujh]

here is a good summary of all search programs you will need: https://conwaylife.com/wiki/Tutorials/Software

[Colonizor48]

I wonder if this rule is Turing complete.

[Haycat2009]

I wonder if this rule is Turing complete.

Yes! Just see the B35/S23 thread for a W110 emulator that is a polyglot.

[confocaloid]

Two-cell chaos maker in B35S238Investigator. Maybe this could be tamed into a high-period gun with additional cells.

Code: Select all

#C The state-8 cell is treated as "on" and turns on all adjacent state-0 cells.
#C The state-9 cell is treated as "off" and turns on all adjacent state-0 cells.
#C Otherwise, the rule is B35/S238.
#C https://conwaylife.com/wiki/Rule:StateInvestigator
#C https://conwaylife.com/forums/viewtopic.php?p=151690#p151690
x = 5, y = 2, rule = B35/S238Investigator
I$4.H!

[Period1GliderGun]

2-cell seeds for p457 and p1966 oscillators:

Code: Select all

x = 51, y = 3, rule = B35/S238Investigator
H$46.H3.H$2.H!