Non-explosive B2a rules

[dani]

This is a thread for non-explosive B2a rules. One I find interesting is B2-ek4i8/S04et.

The couple known elementary oscillators:

Code: Select all

x = 28, y = 25, rule = B2-ek4i8/S04et
9bo2bo$20bo5bo$9bo2bo$22bobo$22bobo5$20bo5bo2$o2bo5bo2bo9bobo$6bo15bob
o$o2bo5bo2bo2$6bo14bobobo$21bobobo2$19bo7bo3$20bo5bo2$22bobo$22bobo!

The right family is infinite, the only still life is the dot.

There are two common spaceships, a 6c/6 and a 4c/4:

Code: Select all

x = 9, y = 10, rule = B2-ek4i8/S04et
obo$6bobo$6bobo$obo5$obo$2bo!

The latter is way less common.

There's almost a c/2 spaceship that can be turned into a wick:

Code: Select all

x = 16, y = 3, rule = B2-ek4i8/S04et
bo3bo2bo3bo2bo$2o5b2o5b2o$bo3bo2bo3bo2bo!

The domino evolves into 4 dots and 2 6c/6 spaceships:

Code: Select all

x = 1, y = 2, rule = B2-ek4i8/S04et
o$o!

Two dots can reflect a 6c/6 like so:

Code: Select all

x = 24, y = 4, rule = B2-ek4i8/S04et
obo20bo$6bobo$6bobo$obo20bo!

They create p30+12n oscillators.

There is a replicator, shown here with an endpost:

Code: Select all

x = 28, y = 16, rule = B2-ek4i8/S04et
o$o$o$o$18bo$12bo5bo5bo$12bo5bo5bo3$15bo5bo5bo$15bo5bo5bo$21bo$3bo$3bo
$3bo$3bo!

Moving objects:

Code: Select all

x = 82, y = 49, rule = B2-ek4i8/S04et
6bo$o5bobo$o5bo$6bo4$6bo$4bo2bo$obobo$o2bo2$2b2obo2$o2bo$obobo$4bo2bo$
6bo3$11bo$6bo3b2o6bo$o5bo4bo$o5bo12bo6bo$6bo10bobobo$17bobobo3bo$7bo
11bo4b3o$bo5bo17bo$bo5bo4bo$7bo3b2o6bo5bo$12bo3$28bo$22bobo2b3o$16bobo
31bo$16bobo9bo5bo5bo19bo10bo$2bo5bo2bo12bo5bo22bo3bo2bobo$obobobobo20b
o19bobobobo2bo$obobobobobo5bo18bobobobo9bobobo18bo3bo2bo$2bo5bo16bo5bo
21bo3bobo14bo$2bo5bo16bo5bo21bo3bobo14bo$obobobobobo5bo18bobobobo9bobo
bo18bo3bo2bo$obobobobo20bo19bobobobo2bo$2bo5bo2bo12bo5bo22bo3bo2bobo$
16bobo9bo5bo5bo19bo10bo$16bobo31bo$22bobo2b3o$28bo!

[praosylen]

I love this rule! Here's a p6 siderake for the 4c/4 and a variant of the 6c/6:

Code: Select all

x = 15, y = 9, rule = B2-ek4i8/S04et
2o2b2o6b2o2$3b3o4$11b4o2$12bo!

This is the first B2a rule I've ever seen with a natural p3, let alone such a small and common one in such a non-explosive rule.

EDIT: Unfortunately, it doesn't seem to be apgsearchable. I don't like how apgsearch handles B2a rules in general — square soups tend to generate too many multi-engine puffers and rakes on the edges. I may try my hand at a bit of hacking to create a pseudo-symmetry with some sort of alternative soup shape that's more B2a-friendly, but I don't have time at the moment (maybe tomorrow).

[LaundryPizza03]

Your rule doesn't quite cut it because there is a natural breeder.

Code: Select all

x = 18, y = 13, rule = B2-ek4i8/S04et
2bo5bo$11bo5bo$11bo5bo$bo7bo$2b3o2$6b2o3bo$11bo5bo$11bo5bo$7bo3bo$2o4b
o2$2o!

EDIT: You might be close to one that does work, though.

[testitemqlstudop]

b2ac3qs0
b2ac3qs01c
b2ac3qs03ac (most apgsearched)

b2aci3q4qz5i6ns01c4a5k
b2ae3acr4eis2e3c4cw5k

similar family, has a 2c/18 rake

EDIT: and no replicators, unlike most B2a rules

[dani]

I may try my hand at a bit of hacking to create a pseudo-symmetry with some sort of alternative soup shape that's more B2a-friendly, but I don't have time at the moment (maybe tomorrow).

Just place an alive ring of cells around it e.g.:

Code: Select all

x = 37, y = 18, rule = B2-ek4i8/S04et
19b18o$4o3bobo4bo4b5o3bobo4bobo$ob2o2b4ob4o4b2ob2o2b4ob4obo$4bo2bobo2b
2obo3bo4bo2bobo2b2ob2o$o3bob2obobo3bo3b2o3bob2obobo3b2o$3bob2obo2b5o3b
o3bob2obo2b6o$obob3o2b3o2bo4b2obob3o2b3o2bobo$2bo3bobobo2b3o3bo2bo3bob
obo2b4o$bob3ob2ob3o2bo3bobob3ob2ob3o2b2o$5b3o2bob4o3bo5b3o2bob5o$4o5bo
bob3o3b5o5bobob4o$2bob4o6bo4bo2bob4o6bobo$2o5bob2o8b3o5bob2o5bo$3b6o2b
3o5bo3b6o2b3o2bo$4o3b3o2b4o3b5o3b3o2b5o$o3bo3b2ob2obo4b2o3bo3b2ob2obob
o$6obobob2o6b7obobob2o3bo$19b18o!

[Gamedziner]

A (relatively) non-explosive rule:

Code: Select all

x = 2 y = 1 rule = B2ac3nq4i5a/S13kr4et
2o!

[praosylen]

A (relatively) non-explosive rule:

Code: Select all

x = 2, y = 1, rule = B2ac3nq4i5a/S13kr4et
2o!

Failed replicator creates 2 4c/5 puffer/rakes:

Code: Select all

x = 5, y = 1, rule = B2ac3nq4i5a/S13kr4et
5o!

[testitemqlstudop]

I know it's a natural breeder, but this is interesting oblique behaviour in a non-chaotically-explosive rule:

Code: Select all

x = 71, y = 66, rule = B2ac3qr/S02ei3ack
bo2b2o3bob2obo7bo3b3o2bob2ob2o3bo2bobobo3bobobo2b3o4bo3bo$2b2o2bo5b3ob
obo4bob3obo4b3o3b2o2bo12bob2o3b2ob2obo$obob3o2b4o2bob3obob2o3bob3o6bob
o5bo3bob3ob5ob4o2bo$3o3b2o2b2o2b2o2b3ob4o2bo4bo2bob2o2bo2bo2b3obo3b2ob
2o2b4o3bo$b2obo2b4o2b2o2bo2bobo3b2obo3b4ob2ob4obob3o2b3o2b2ob7ob2o$b5o
4b3o2b6ob3obob2o2b4obobobo2bo2bo2bo2bobobobo3b2ob4o$o2b2obobo2bob2ob3o
b2ob4o2bobo3bo3b4o2b2o2bo2bobobo2bob2obo3b2o$o4bob3ob3o4bo2bobo3b3o3bo
2bo2b5o3b3ob6o6bo2bo$o4b3obo2bo3b2obo2bo3b2obo2b5o2b5obob3o2b2obobobob
ob2o2bo$2bob3obo2b2obob7obobo4bo4b3ob2ob3o2b2ob2ob5obo2bo3b3o$2obobo2b
o2b4o2bobob3obo2bob3ob3o2b4o4bo2bob3obob5o2bo2b2o$b2o6bo2bo3b4ob2o9b3o
3b2ob2o2b2obo5b2ob6ob3o2bo$2o2b3ob3ob2o2b7ob5o2b3o4bo4b4ob6obo2bo4bo2b
o2bo$o2b2o4bo3b4ob2o3bo7b2ob3o4b2o3b3ob2o6b3ob2o2bo2bo$b2ob3ob2ob2o3b
2ob2o2b2ob3obo2bobob2o2bo4bo2b2o4bo3b5o4b3o$bobobobobo2b2o2bo3b2ob2o2b
6o10bo2b2ob2obo2b4o2bo2bob2ob2o$o2bob2o2bobo6bobobob8ob3obo2b4o3bo4b2o
2b2obob3o2b3obo$3b2ob2o2b2o9bo7b2o2b2ob2o2bo2b3o2bob2o3b2o3bo4b4o$4obo
4b2o3b2obo3b2o2b2o5bo3bo4b2ob4o2b2ob2ob2o6bobobo$b4obobob6o6bobob4o6bo
b3o2bobo2b7obo4b5ob2obo$b4o3b3o6bo2b5ob2obobob2ob3o3bob2o2bob2o2bob3ob
2obobob2o$2ob3o2b2ob2ob2o2b2o3bo2bo2bo2bo2b2obob2obobo2bo2bobobo6b2obo
b4o$o2bo3b3o3b2obo3bo3bobo4bobo3bo2b2o5b4obo4b2o2b3ob3o$b2ob3obobo3bo
3bo3b2o6b3ob2obo2b2obo3bobob3o4bo4bob2ob3o$bobobo3bobobobobo2bo4b2o2b
2obobo2bo6b2ob2o2bo2bobo2b6ob3obo$3obo2b3o8bobo2b4obob2o2b2ob3o3b2o5bo
4b4obobo$b2obob2o2b2o4b3o2bo2bob2obobobob2o3bo2b3o5b2o4bo2b2obobo2b2o$
b3obo4bob6ob5o4bobobo2bo4b4o2bo2b3o5bo2b3o2b3o$ob3o2bo6bob3o3bo6b2o2bo
bo3bo4bobo2b2obo2b3o2bo2bo3bob2o$4bobobo2bob6obobo3b2o2bo2bo6bob2o4b4o
b7ob3ob3obo$5bobobobo7b3o2b4o3b5o4bo5b2obobob2obo2bobob3ob4o$2b2obo2b
3obobob3obob2obo6b2ob2ob3obo3b4o2bob3o3b3o3bo3bo$o2b2obob6o3b5obo5b3ob
3ob4o2b4ob5o2b2o3bo4b4obo$3obo4b2o3bo2b3o4bobobo3b4o2bob2o3b3ob2o3bobo
b2o3b4ob3o$2o3bo2b3o3b5o2b2o4b2obo3bobobob3o2bob2ob3o2b3o7b2o2bo$b7ob
3obo2b3ob2obobob2obo3b2o2bob2o2b5ob2ob3ob3o2bo2bo2bo$2o2b6obob2ob2o2b
2o2bob2o4bob2o2b5o2b3o2bo2bob2ob2o2b4o2b3o$o2bob2o2b2obo2bo2b2o2b2ob2o
bob2obo3bobobobo6bo3bo8b2o3bobo$4b3ob2ob4o4b3ob2o2bob2o2bo4b2o2bo2b2o
4bob2o2bob2o5bob3o$2b6o4b3o2b2obobob2obobobob2obobo2b2o2b5o2b2obo4b2o
2bo4b2o$6bobo2b3o2b5o3b3o4b2o6b3ob3obo2b2o2bo2b2o3b5o2b2o$2ob2o3b5o6b
4o2bobobo2bob4obo3b2o4bob3o2b2o3b2ob4obo$bo7b6o2b2o2bob2ob2o6b2ob2ob2o
2bo2bob3o2bo6bob4ob2o$2b3o3b4ob2ob5o2b2o2b2o4bobobo2bo4b3obob5ob3o2b3o
bob2o$ob2ob2o5bo3bobobo3b2obob2ob2ob4o3b4o2bo2bobo2bo2b2o3b2o2b2o$b2ob
obo5b4o3bo2b3ob3obobob2o3b3ob3obo2b3o2b6o4bob4o$5obo4bob2ob2obo2b3o2b
2o2bob5obobobobo3bo3b2obo4bobo2b2o2bo$ob2o3bo4bo2b3obo4b3o5bo6b3o3b3o
3bo3b4o3bo3b2o2bo$o5b6obobo3bo2bobo2bo2b3o4bo4b3o2b2ob2obob4ob2obobo3b
o$2bo4b4o2bo3bo2b4o3bo2b5o3b5o3bobo5b2ob5obob4obo$3ob2obo4b2obo2bob2ob
2obo2b3ob2obobobo6bobo3bobobob3o2b2ob2obo$b2o4bob2o2bo4bo2bo2b3ob5o12b
o2bo5bo3b2o4b3obo$o2b2o3b3o3bobobo2bo2bo5b2obo2b8obob4o6b4o3bo2b3o$bo
2b3o3bob3o2b2o2bob2obob3o3b2ob3o2b4o2b3o2bobo5b3o5b2o$3o2b2o3b4o3bobob
4ob2o3b2o2b2ob5ob2o2b2o2b2ob3ob3o3b3obo$bob2obo2bo2b2o2b3o2bo2bo3bob2o
3bob2ob2o2bobobobobo3bo5b2o2b5o$bo3b7o2bo2bo2b4obob2o4b7o6bo2bo3bob4o
4bob2obobo$o4bo2b2o3b2o2bob3o3bobob4o3bo4bo2bob3obob2o3b2o3b3obobo$4ob
o3b2o6b2obo4b3o3bo3bo3bob3ob4o2b4obo2bob2o3b4o$b6obob4obobobob3o5bobo
2b2obo3b3obob2obo2b3ob2obob2o2bobobo$o3bob6ob3ob2o2bob5obo2bobobobobob
2o5b2o7b2ob2obo3b2o$b3ob4o2bob2o3bobo2bo2b2o4bo6b3o2b3obob2o3b3ob3obob
2ob2o$bobob2obo4bobob2o2b2ob5o7bobo5bo2bo2b4o2bo2bobob3o2b2o$o3bo3b6ob
5obo3bo2b2ob2obobobobobob3ob2o3bo3b6ob2o2b2o$bo4bo2b2o2bo4bo3bobobo2b
4obobobob3ob2o2b3ob2o2b3o2b6o2b2o$ob2obob2o4bo10b2ob6o2bob3obo2b2o4bo
3b3ob5o2bo2b3o!

You can see lots of G-dot reactions. Orthogonoid?

[Moosey]

Code: Select all

x = 120, y = 103, rule = B2a3r4i/S1c
bo2bob7obob3obo5b2ob2o3bob3o2bobob3o3b3o3b2ob2o3bob4o5b3o4b2o2bob2o2bo
bo3bob2o5b3o3bobobo$b4o3bobo3bo2bo3b2o2bo5bo3b3ob2obo2b2ob4o2bo6b3o3bo
b3ob2ob2obobo3b5ob2ob3o3b4o4bo3b2obob2o$bo2b2ob3o3bob2o2bo2bob2obobo4b
o2b4ob2obo2bo2b2ob4obob4ob2ob2o2b8ob2ob3o2b4ob3ob4o6bob2o5bo$2b5obob2o
bo2bo5bo5b2o2bob3o2bobo3bobo2bo5bob2ob2o2b9ob3o3bobo2bob3o4bob2ob3ob2o
bobob2o3bo$3ob3o4bob2ob7obo2b3obo2bo2b5o3b4o2b4obobo2bob3obo3b3o3bo2bo
10bobobob2ob4o2bo2b3obobo$obob2obobo2b2obo2b2obob2o3b4o4b3obo2b2o3bobo
bob5obobob4ob9o2b2o2b2obo6b3obobo5bobobobo3b4o$ob4o4bo3bobobob2o3b2ob
3ob4o2bobo2bob3obobobo3bo3bob2o3b2o3b2o3bo2bo2bobo4bob4obo2bo4bo3b3o$
2ob2ob2o3bo2bobob2ob4ob4o6bo4b2obob5obobo5b3obo2b4obobobobobo3bob6ob3o
2bo3b6obo2bob5o$ob2o4bob2o2bo2bo3b3obobobo3bob4o4bobo2bobobobob4o3bo2b
4o2b4obo2bob3o2b2o2b5o4b2ob3obo2b2ob3obobo$obobobobob2o2b4ob3o2b2o7b3o
bob3obob2obobobo3bo2bo3bobobo3bob5obo2b4o5b4o2b2obob2o3bob8o$o2b3o4bob
3o2bob3ob2o5bo2bo2bobo3b5o3b4o2bo2bobobob5obo5b5obo5b4o2b2ob2o2b2obo2b
o4bo2bo$b4obobo2bo2b3ob2o2bo2b3o2bobo4bobo3bobo3bobo4b3ob3o2b3ob3ob3ob
3obo2bobob2ob2o2bo5bo3bob2obo2b7o$o6b2o7b4obo4bobo5bo2bo2bo2bob2ob4o8b
o2b3o2bob3obobo2b2o2bobob4o2bo4b3o2bo2bo4b6o$2bo2bo2b3o5bob4o2bo8b2o2b
ob5o2bo3b2obo5b3o2b2obo2bob4obo4b2ob7ob4o4bobob3ob5ob3o$ob3obo2b5o3b2o
b3o4b4o2b3obob4ob3ob2o3bo4b10ob3obob2o2bob3o2b4o5bo2b4o2bo10bo2bo$ob3o
bo2b3ob4o3bo4bo2b2o5bo2b4o3b3ob3ob2o2bobo6b4ob2ob4ob7o4b4o4bobob3o3b3o
bo4bobo$obo4bo2bo4b2o2bobo2b2o3b2ob3obob2ob3ob3o2bob3obobo5b11ob2ob2o
2b3o2bob5ob4o2bo4b4obo5bo$6o3bob3o11bo4b4ob4obo2b4o3b2obo2bo2bo2bo3b4o
2bo3b3o5b3o3b3o2bobob2o3b2o3bob5ob3o$3obo3bobobobob2ob2o6b5o2bob2o2bob
2obo2bobo2bob2ob4o6b2ob3ob2ob3ob3ob2obob3obo2b7o3bob2o2bob2o$bob3ob2o
5b4obob2obob2o2bobo5b2o2b2obo2bo2bobo3b4o2b3o3bo8b2ob2ob6ob2o2b2o2b4ob
3obo2b3obo2b2o$2obo2b2o5b5o2bo2bobo2b3obobob2ob3o2bo3bo3b3o3bob2obobob
2o2b2ob2ob4ob3o2bobo2b6ob2ob2o2b2o3bob2o4bo$2bo3bo2b4o2bo4bo2b3ob2ob2o
b4ob8o3bo2bobo2bobo3b2ob2obo3b2ob2o2b2o2bo3bobobo2bob4obo2b2ob3obo2b2o
b2o$bo3bob2o4bo3b7o3bo4b2obo2bo2bo2b2obobo2bo3b3o2bo4b2o3bob6obob3obo
2bo2b2obobo3bo4b2o2b2o2b3o$bob4o3bo2b2o2b3o2bob2ob3ob2o3b2o2b5o4bo5bo
2bo2bo4bo2bobo2b3o4b2ob2o7b3o3bo5bob2o2b4o2b3o$2bo2b2obo2bo3b3ob4o2bob
obob2o6b3o2bo2b3ob4o7bobo4bobob3obob4o5b2ob2o2bo3b2o3b2obob2ob3o3b2o$b
2ob2ob6o3b2ob4o2bob5obob3obob2o3bobo3bo2b3obobo3bo2b2o4b3obo4bo4bo2b3o
bobo3b3ob2ob2ob3o2bo2bo$2b2o3b3o3bo3bo2b3o3bo2bo2bobob2ob8ob2o4b4o2b4o
2b3o4b2o2bo2b2o4b2obo2bo4b3o2bo2b2obobo3bob4o$2b2o2b4o2b2ob3o2bo5bo2bo
b2o2bobo2b2o3b2o2bo5b2o2b3o5bobo2b6obo4b2o2bob2obo2bobo2b2o5b2o7b2o$b
2obobob2o4bo2bob6ob8ob3obob2o2bobo2bo4b6ob2o2b6o2bobo2b3o3bobobo2bo2b
6obo4b3o3b2ob4o$b4o2bo2bo2b2ob4ob2ob3o2b2o2b3obo5b2ob3o4bo5b5ob2ob3obo
4b3o2bob2o2b4o3b3ob2obob5obo2b2o2b2o$3obo2bobo3bobob3ob4o2b2o2b5o6bobo
bobo2bo3bob2o2b2o11bobobob3o2bo3b3obo2b2ob2ob2o2bo2b2ob2obo3bo$4ob5o3b
ob4o4bobob2o2bo3bobobo4bo5b2obo2bobo2b3o3bobobo3b2obobo2bo2bobob5o2b5o
2bo2bo4b2ob2ob2o$2o4bo4bob4o3b3obobob3ob3o2bobo2bo6b6o2b2ob2ob2o2bo2b
2ob3o4b6ob2obo4b3obob2ob2o3bobobobo$4o4bob2obobob5o2bob2ob2o2b3obo3b3o
b3obob7o3b3o2bo2bo2bob2o2b2o5bo2bo3b2o2bob3obob3obob2ob2ob3o$o2b5o3bo
3b5ob2o6bobobo3b2obobobobo7bo2b2o3b3obobo2bob9o5bo2bo3b6obo2bobobobob
3obo$o4bo4b2ob2o3bo2b2ob3o5bob2ob2obobob2o2b8o3b2o2b6ob2ob3ob3obo2b3ob
ob3o2b2ob2obo6b2obob3obobo$2bobobo2b3o4bobo5bobo4bob6ob2obobo5bo2bobob
2o2b2o3b6obob4obo3b2o3b2o3bob2obo2b2o2b2o5bobob2o$b2o2bobo3bo2b2o2bobo
2b2o2b2o4b5o3b2o2b4obobobo3b2obob2o2b2ob3o8b2obo3bob2ob2o5b6o2b2o6b3o$
2ob2obo4bo2b2ob3ob2ob2o3b2o6b2ob2o5b4o2b2ob2o2bob4o8b2obo2bo2bobo2bo7b
4o2bob3o2bo2bobo2bo$b4obobo2b4ob4o4b3o3bo2b2ob2ob4o4bob5obo3bo2b3o5bob
obo2b2o2bo7bo2b3o5b2o2bob2obo2b2o2b4o$3bobo6bobob2ob2o2b3ob2obobo2bob
5o2bob3obo2bob4o2b5obob2obob3o3bob8obob5obo2bob2o2bo2b2o2b3obo$2ob2o2b
3o4b3obobobo3bo2b5obob2o3b2o3bo3b5obobob6o5b3o2bob4o2b3obob3ob2ob5o6b
2o2b3obobo$2b3obo2bo2b3o4b2obob2o3b2o4bo4b2obob3o2b2o2b4ob2o2bo2b2ob5o
bo5b2o3bo3bob2ob4ob2o2b2o3bob2obobob2o$o2b5obo2b2ob3ob4o2bo2b3o2bobob
4obobo4b2ob2o3bo2bob5obob2ob2o3bo2b2o2bobo2b2ob2obob2obobobo2b2o2b2ob
5o$4b2o5b2obob2o9bo4b2o3b2ob3obobob4ob2o6bob2o4bob2obo2b2ob6o5b2obo2bo
2bobobobobo3b2obo2bo$2ob2obo8b2o2bo2bob3obo2b2o3b2ob2ob2ob2o2b6o2bo2bo
2bobo3b2o4bob3o2b3obo2bob3obo2bo2bob2ob4o2bo5bo$b3o7bo5bob3o2bo3bo4bo
3bobo5bo3bo2b3o3bo2bob2o5b2o4bo3bob6o2bo5bobobo5bob3o2bob3o$o2b3ob2ob
5obobo5b3obo3b2ob3obo3b3o2bob3o2b3o2b2o2bo2bobo4b2o3bo4b7ob2obobo4bo5b
obo2bo2b4o$4b3o2bo7bo5bobob6ob5obobob2ob2obo2bobo3b2ob4o2b3ob2o2b4obob
2ob3o3b2o3bob3o2b2ob3o4bo3bo$3b4ob2o3b2ob4o3b4o2bo2b4o2b4o2b2o2bob3o6b
3o4bo3b3obo2bob2o8bobob2ob2o2bob2obobobobobo2b2o$b4o3bobobobobo2b2obo
3bo3b3o3bo2bo3b2o6bo3b3ob2o4bo7b3obob2o3b3obobobo2b5ob2o2bob2o4bo$ob4o
2bo2b4o2b2obobobo2b3obob2ob4o3b2o2bob2o2b2o2bob2obo3b6ob2ob2o2b2ob3o3b
4o2b2ob2obobobobob2o3bob2o$4b4obo3b2o2bob3o3b2ob2o4b6o3bo2b3o4b3ob4o3b
obo2b2o6b4o2bob3obob2obobob4ob3o2bo2bo3b4o$8b2ob2obob2ob4obo2b3o3bob3o
3b3ob3o2bo2bo2bo7b3obo4b6ob2o2b2obo4bo2b7ob4o2bo2b2ob3o$obob3ob3ob2o2b
ob2obobo2bo2b4obobo3bob3o2b3o2b2o5bo2b3obobo2bob2o5bobo3bo2bo2bo2bobob
ob3ob2o2b2ob2obob2o$b3o5bo2b2ob4ob2ob3o2b3ob4obo3b2obo2bobobo2b5o4bobo
b3obob2o5bo2b6o3b3o3b4o5bo3bob3o$b2o4b4o2bob3o2bob3o3bo4bo3b3obob2o2bo
5bo10b3ob4o6b3ob3obob5o2b3obo2b2o2bob2o2bobobo2bo$obobob2o3b10o4b7o2b
2obo2b3o3bobo4bob2obob2obob2o2bobob4o2b6o3b2o2b2o3b3obobobo2bob4ob2o2b
o$ob8ob3o5bo2b3o3b2obo3bo6bobo3b4obobob2ob4o2b2ob3o3bo2b2ob4o2b3ob4ob
3o2b2o2bo2b2o4bo2b3o$o2b3o2b2o2bo2b3obo2bob3o2bob8o3bob4o2bo3bob2obob
3obo3bobo3bobo2b3o2bobo2b2o2bo2bob2ob2o3bo2b5obob2o$2ob9ob2ob2ob2o3bob
obobob3obo3b2ob2o2b2o4b5o2b2o2b3ob3o5b4ob2ob2o2b2o3b2o4bob2obobo2bo2b
3o3b2o$bob4o2b2obobo2b3o2b6o5bob2o5bo3bo2bobobo5b2ob3o2bobob2obob4ob3o
2bo3b2obo5b3o3b2ob2obob4ob2o$2ob3obob2obobo2bobob5o2b2obobo2bo3bo2bo2b
ob4obob2o3bo3bob2ob2o2bo3bo2b5obo4b6obob2o4bob5o5b2o$2b5ob3obo5b3o3b2o
bo4b2o3bobo2b2o3bob3o4bo2bobobobo2bobo3b3o2b2ob3o3b4ob5o3bo4b6obobob2o
$o3bo3bob2o3b2o2bob2ob2obob5obobo7b3o3b3o2bo2bob2o9bob4o4b6o4b2obo7bob
ob5o3b3obo$obo2b6obobob2obo3bob3o3b2o2b5o2bo2b3obobobob3o3bobob2o5b2o
2b2o2b4ob3o2b4obo2bo4b2obo2bo3b2o4bo$o2bo3bob4ob3obo2bob4obobobob3o2bo
b2o2bob3o3b4obo3bo2b3obobob2obo2b2obo7b3obobo3bob3obo5b2o2b2obo$4bo3b
2o2b3obo4b2obobobobo2b2o4b2ob5o2bob3o2bo4b6ob2obob2obo3bo2b4obo3b4ob3o
b3ob2o2b2o4b2o2bo$4bob2ob3o2b2o2b2o2b2o2bo3b3obob2o2bob3o3b2o3bob2o3b
3ob2ob3ob2o2b2o4bobob2obo2bo6b4o3b2ob2ob2obo2bo$b2o2bo2b2obo3bo4bo2bob
ob3o6bob8obo3b2o3b3o2bob4o5b3o6bo2b2ob2ob3o2bobobo2b2obobob5o$b2o2bo2b
2ob2ob5ob2obobo4bobobob2o2bo2b2obob3ob3o3b2ob2o2b4ob5obo3bo2bobob2obob
obo3b2obobo2b6ob3o3bo$2obo5b2obo3b2o2b2o2b3o5b2obob6obobobo2b2o2b3ob2o
2b4obobob2obo2b4o2bo3bobo2bo4bobo2b5o7bobo$ob2obo3b3o4bo2b3o2bo3b8o2bo
bo2bobo2b3ob2obo2b4o3bo2bo6bob2o2b3obo6b3obo7b5o2b2obobobo$o5bobo3bo3b
o2bobobo3b2o3bo2b5ob5obo3bo2bo3bo2b3o7bobob3obo2bobo4b3o3b2ob3o2b2obob
ob3o2bob2o$3ob3o2bo4b3ob2o2bobo3b4ob2o2b5o4bobob6ob2obo2b6obob3o3bo3bo
2bo3b11ob5o2bo2bo2b6o$o2b2obobo9b3o2b6o2bob2obo3bobo8b5o2bob2ob3obo2bo
2b4obo2bo3b2o2bo2b3o5b2o2bobobobo5bobo$2o4b3obo2b3o2bobob2obob2obobo2b
obo4bobobo2bo2bo3b2ob2ob2ob4o2bobo3b3ob3ob4o2b3obo2bo4b8o2bo2bo2bo$b2o
b2o3bob2o2bob4obo2bobo2b2ob2o3b2ob2obobobo3b2ob4obo3bo2bob5o5b2obobobo
3b3ob3o2bobob5obob8o$b9o4bo8b2o2b4ob3ob2ob7obo3b5ob3o3bo3b2o2bob4ob2ob
4o3bo2b2o2bo4bo5b5o2bo5bo$4o2b2o5bo5b2obo4b3obo3b2ob2o2b2obobo2b2o5b2o
b2o3bob2obo2b2o4bo2bo2bo2bo2bo6b5o3b2o7bo2bo$2bob2o2bobob2obo2b2o3bo3b
2o2bo5bo2bo3b2o4bo2b4o2b2o2b3o3bo2b2obob2obo2b3obobob6ob7obo2bobob2o4b
o$4obo3b2o5bo2b2o2bob3o3b4o2bob3o2b3o3bo2bo2bo2bob4o2bo2bob5o2b3o2b2ob
obo4b2o8bob2ob2o4bo2bo$4o7b2obobo8b2o2bob5o7bobob3o5b2obobo2bo3bobob2o
b2ob7ob2o3bobo2bo2b3o2bo3bo2b5ob2o$b3obo3bob2o2bobobo2bob2o2b2o3bobo5b
o3b2o2b4o2b2o2bo3bo4b5obo2bob2obob3o3bob6obobo3b3ob2obobobo2bo$ob2o3bo
b2ob3obobobobob2obob2o3bob6o3b3ob3o9b2o2bo2b4ob4ob2obo2bo2b7o11bo2bo8b
2o$4obobob2ob3obob5obo3bob2o2b3o2bo2b4o2b5ob2o2bo2b2ob3o2b3o2b2o2b3ob
6o2bo2b3ob5o2b4o3b2o2b5o$2bobob2obobob3obobobob3obobo2b3o3b3o3b2obobob
3o2bobo4b2o5b2o2bo2bo6bobo3bo3bobob5o2bo8bo4bo$bo2bo2b6o5b5obo2b2ob5o
2b2obo2bobo2b2ob2ob4o2bobo3b2obob3obob2o3b3ob3ob3o2b3o3b2ob5obobo2b2ob
2o$ob4o7bo2b3ob2ob8obo3bo2bob2o6bo2b2obo2b2o2b3o8b6o3b3obo2b2ob2o2bo2b
4o2bobob3o2bobo2bo$o3b3ob3obob3ob3ob3obo3b3o2b8o2b2obo2b8o5bo2bo4bo2b
4o2bo3bo2b5o4b2o2b3o2bob2o3b7o$obob4ob2o3b2o4bobo4b4ob3obo2bo3b4o4b5ob
obo2b3ob2o2b3o8b5o2bo3b2ob3obo2b2obob2ob3o2bo3bo$4obobo6b2o2b2o2b2obob
ob2o8bob3obobob2o5b3o2b2obobo3bobob2o2bob3ob2obobobo4bob2ob4obo3b4o3b
3o$bobobo5bo3b3o4b2ob4obo4bob2ob2o3b3o2bo2b2obob2obo2b2ob4obo3bo3b2ob
2obob6obob2obob4ob2o2b3obobobo$6o3bo2bob2o7b3obo4bobo4bob4o2b6obo2b4o
2b2obobo2bo2bobob2obo2bobobobob3o2b3ob3obob2o3b4obobo$obob2o2bobob3obo
3bo2bobobobo4b4o2b2o2b4ob3o4bo3bo2b2o2b6ob3o3bobo4b2o6b3ob2ob3o3bo3bo
3b2o$b2o7bob2o3b2ob2o4b4obo4bo2b2o2b2o2bobo2b3o3bo3bo2b2o3b2ob3ob2ob2o
bo3b2ob4ob4o3bo3b2ob8o2bo$2bo4bo3b7obobob2obo7bob4obo4b2o2bobo2bob2obo
bob2o2bo2b2o2b2o5b4ob2o2bobob2o2bo3b2ob2ob4o5b2o$o7bo2b3ob2o4b2ob2o2bo
2bobobo3bob5obo3b3obobo5b3obo2b2o2bo3bo4b2o4bo2bobo4bob5o2bobobo2bo3bo
$b2o3bo2b2o2b5o2bo3b2o2bob2o4bob2ob2o2bobo2b4ob6o2b2o2bobo3b3o3b2o3bo
3bobo2bo2b2o3b2o3bo2bobo2b2ob2o$5b3obob2o4bob6ob3obob2o2b7o5bo2bobob2o
3b4o4b2ob2o3b2o2b2obo3bob3obobobo4bo2b2o3b2o4b2o$o4bobo3b7ob5obo2bobo
2b2o2bo2bobo4b2ob3ob2obob3o2b3o4b4o4b2ob2obo2bo4bobobo4bob3obo4bobob2o
$bob3o3bo3bo4bobobob5o5bob6o4b3o2b3o4b2o2bobob2o3b2o2b2ob2o4bobobob4o
2b2ob2ob3o2bob4o2bo2b2o$bo2b2ob4ob3obo2b2ob6obob2o2bob3ob2obo2b2obobob
ob5o2bobobo3b4o2b4ob2o3b6obo2bob4ob3o2b2obobobo!

Perhaps this could be made into a rake

Code: Select all

x = 34, y = 5, rule = B2a3r4i/S1c
15bobo5bobo5bobo$b2o12bo7bo7bo$o2bo$o2bo$b2o!

Somehow

[2718281828]

A rather dense B2a rule, here some features:

Code: Select all

x = 48, y = 108, rule = B2a3airy4aiw5ar6cek8/S1c2cen3ci4ciz56-k78
2$3bo$4bo6$10bo$11bo$6bo$5bo7$11bo$12bo2$8b2o2$9bo3$4bo$5bo11$11bo$10b
obo$9bobobo$8bob3obo$7bob5obo$6bob5obo$7bob4o$6bob6o13bo$7bob5o12bo$6b
ob6o$7bob5o$6bob5o$7bob4obo$6bob6obo$7bob4obo$8bob3o$9bobobo$10bobo$
11bo3$11bo$10bobo$9bobo$8bobobo$7bob3o$8b5obo$7bob5obo$8b6o$7bob5obo$
8b8o$7bob5obo$8b6o$7bob5obo$8b5obo$7bob3o$8bobobo$9bobo$10bobo$11bo7$
10bo$9bobo$8bobo$7bobobo$6bob3o$7b5obo$6bob5obo4bobobobobobobobo$7b6o
7bobobobobobobob2obo$6bob5obo22bo$7b8o17bo3bo$6bob5obo13bobobobobobo$
7b6o17bobobobobo$6bob5obo$7b5obo$6bob3o$7bobobo$8bobo$9bobo$10bo!

A sample soup:

Code: Select all

x = 68, y = 48, rule = B2a3airy4aiw5ar6cek8/S1c2cen3ci4ciz56-k78
2bob2ob2obob4o2b3o3bob4o5bobo2bobo3bobo2b2ob3o2b2o4bobo$3o4bo2bob2ob2o
6bo2b9obob3ob3obo3bo3bo8bob3o$o2bo4b2o3b2o2b7ob3obo5b2obo2b5o2bob2o2b
2obobo5b2o$b2o2b2obo2b2o2bobobo2b3o2b2o2bo2bob2obo2bo2b2o2b2obo3bo4b4o
$ob2o4bo3b3ob2o2b4obo5b3obob2ob3o3bob3ob2ob5obobo2b2o$4o2bo2b5o4b2o3bo
bob4o3bobo4b2obo3bo2b4o5b2obo2bo$obo2b3obo2b2obo4bob2o2b5obo3b2o3b2ob
2o2bo2bobobo2b2o3bo2bo$2ob3o6bo2b5o2b3ob2o2b4obobo3bo2b3obob4ob5obobob
o$o4b2o2b2ob2ob2ob3obob3ob2ob6o3b3o2b4o4b3obo4bo4bo$o6b4o5b3ob3obo8b3o
2bobo6bo2bobo4b2ob2ob2ob2o$o2b6obo2bobobobob2ob2o3bo5b5obobob3ob5ob4ob
o3bo2bo$obob5obo2bob6ob4obo2bo2b3o3bo2b3o2b6obo4bo4b2o$2o2bobo2bo5bo2b
2ob2obob2o5b2o3bob2obo2b5o3bo2bobob2ob3o$b2o3bobo2b2o2bob2obo3bobo2bo
3bo2b3ob3ob3ob4o2b2ob3o2bob2o$3b5ob2o3bobo2b2o2bobobo2bob2o3b2obobob5o
3bo4b4o3bo2bo$b3obob2obo2bo2bobo2bobo2bob2o6bobob2o4bo3b4o2bob3o2bobob
o$2b5o3bo2bob2obo2b3o4bo3bob6o2bo2b3o2b4ob2obob2obobobo$bo7bob2o2bo2b
3obob4obob2ob3ob3o2bo2bobob3o2b5o2b2obo$3b6ob3o4bob3o4bo2bo2bo2b3o3bob
o5bob4o3b7obo$6ob2ob2obob5o2bo2b2ob3obobo2b3o4b3obobobobobo4b3o$b4ob2o
2bob2o2bo2bobobo2b3o5bob2o4bo2b2ob2o3bobob2o3b2obobo$bobobobobo3b2o2bo
3bobo2bob2o2bo5bo3bob3obo2bob3o2b3obob4o$o2bob2ob4ob4o2b2o2b3o3bo2b5ob
ob2ob2o2b4ob2o5b3o4bo$2b2o2b2o3bobo6bo4bo2bob2o2bobobob2o3b2ob5o2b2o2b
o2bobo2bo$2o3bobo4bo2b3ob2ob3o3b2o3bobobobob2o2bobo3b2o2bo2bob2obobo$o
4bo2b3obobo2b2o2b2obo2bob2obob6ob6o3bo4b3o2b4o$2obo2bobo2bob5o2bob3o5b
2obobob2o2bobobobobob3ob4o3b2obobo$o5bobob6ob3o8bob2o3bobo2b2o2bo3bo2b
3o2b2o3b3ob3o$bo2b2o4b2o2bo5bo3b2o6b2o4b5ob2o3b3ob3ob4obo4bo$b2o2bob2o
bo3b3ob2o3bo2bo3b5ob4o3bobo2b4obo6b5o2bo$b2ob2o3b2o2b2obo3bo4b2o3bo3bo
bo4b2ob4o2bo2bob4o4bo2bo$3obobo2b5ob3o2b2o2b2o7bo2bo2bo4b2o2bo3b3obo7b
obo$obo2b3o3bob4ob2ob3o3b3ob4o5b3o3bo2b2obob2ob2o4bo2b2o$o2bo2bo6bobo
2b6obobobo2b2obob3obo4b2ob2obobobo3b3obob2o$bo2bobob3obob4o5b3o3b2o5bo
b2o4b4ob2ob2obob3o4b2obo$bo2bo3bo2bo2b2o3b6o2bobobo2bo3bo3b3ob2ob3obo
2b3o2bo2bobo$obob5obo2b3obobobo2b2obobo4bobo2bo2b4o2bob2o5bo2b2o2bob2o
$o2bob2ob5o2bobo4bo3b2o2bobo3b3obo2b2o3b3o2bobob3obo5bo$2b2o2bo3b5o2bo
bob3ob2o2bob3ob4ob2ob2ob2o2bo2bobo4b2o2bobo$obo4b3o3b3obo2b5o4b2o2b2o
2b5o4b4o2bo2b4ob4ob3o$b3o2bobo3bob2o3bo4bobo3b2ob3o3bo2b2o5bob4obobo2b
o2b3o$4obo3bob5o3bob2obob2o4bobob2o3bo2b2ob3o4b2o2bob3o4bo$2b3obobobo
2b5o4bo5bob3ob4obobobo3bo3b4o2bob2obo2b2o$obob2obo2bob2obo2b2obob4ob2o
bo2b5ob4o4bo3b3ob2obo2bobo$o2b5ob2obob2ob5ob2ob4ob4o2b2obo5b3ob4o3bo3b
ob2o2bo$bo2bo3b3o4b2o4b4o2b2o3bob2o2b3obo2bobob9o2bob4obo$bob4o2bob2o
2b4o2b5obobo2b2ob2obob2o2b2o3bo3bob2ob7obo$b7o2b2o2bo6b13obobo2bobo3b
2o3bo2bo2b3o2b2o!

and something dense:

Code: Select all

x = 58, y = 51, rule = B2a3airy4aiw5ar6cek8/S1c2cen3ci4ciz56-k78
11$10bo6b2obob6obo$10bobo5b9o4bo$18b9obobo7bo2bo$16bob9o2bo6bobo$13bo
5bo2b6o$13bob2o5b5o6b2o$20bob6o$16bo2bo2b5o3bo2bobo$16bobo2b6obobobo$
19b8obo2b2o$10bo4b2o2bo3b5o3bobo$19bob7obobobo$16bo5b5o9bo$15bobo4b7ob
o3bo2bo$22bob3obobo4bo$13bo3bo6b4o2bo$13bobo4bobob4o$24b4o6bobo$15b2o
3b2o2b4o$24b3o6bobo$17bo7b2obo$16bo6bob3o4bo5bobo$19bo4b3o3bobo5bo$19b
obo3b2obo11bo$23bob3obo$22bob4obo$15b2o5bob3o$18bo6b3o$12bobo9b3o14bo$
16bobo6bo11bobo$12bobo2bo10bo$13bo10b2o11bobobo$10b2o4b2o9b2obo7bobo$
12b2o$10bo5b2o9b4o7b3o!

[LaundryPizza03]

What is the pseudosymmetry called?

I'd like to try this rule in it.

Code: Select all

x = 76, y = 22, rule = B2ac3akn4ikt5qr/S03i
2b2o12bobo$15b2ob2o$b4o$37bobo$o2b3o30b2ob2o$bo13bo3bo15bo5bo32b2o$2b
2o33bobo34b2o14$18bo$18bo!

Interestingly, the second c/2 does not use the B2a transition. At the moment, it is the only known ship with this property.

[fluffykitty]

I'm pretty sure someone else found a B2a-less spaceship before that.

[AforAmpere]

I'm pretty sure someone else found a B2a-less spaceship before that.

I found some B3i and B1e agnostic ships, but the only ship I've seen on the forums that is B2a agnostic is that one. They posted that ship somewhere else a while ago, maybe you are remembering that. I may search for some more.

[wildmyron]

I'm pretty sure someone else found a B2a-less spaceship before that.

I found some B3i and B1e agnostic ships, but the only ship I've seen on the forums that is B2a agnostic is that one. They posted that ship somewhere else a while ago, maybe you are remembering that. I may search for some more.

I went through the same mental process. Here's the original post.

What is the pseudosymmetry called?

I'd like to try this rule in it.

Code: Select all

x = 76, y = 22, rule = B2ac3akn4ikt5qr/S03i
2b2o12bobo$15b2ob2o$b4o$37bobo$o2b3o30b2ob2o$bo13bo3bo15bo5bo32b2o$2b
2o33bobo34b2o14$18bo$18bo!

One of the B2a rules with a pseudosymmetry census is B2an3ekr4i7c/S1c2ci3iqy4-a5678. The pseudo-symmetry is called ee9-test. I don't know if the modified hashsoup has been published, but the soups appear to all look like this:

Code: Select all

x = 22, y = 22, rule = B2an3ekr4i7c/S1c2ci3iqy4-a5678
bo18bo$ob18obo$bo18bo$bobobobo2bob2o4bobo$bob7o3bobo2bobo$bo4b2obobob
3ob2obo$bo2b5obo2bob4obo$bobob3o3bobo2b2o2bo$bo3bob2obobob2ob2obo$bobo
2b2o3bo3bo4bo$bobobobob2o2b4o3bo$bo4b2ob2obo2bob2obo$bo3b5ob2ob5obo$bo
bo2bo5b2obo2bobo$bo2bobob2o4bo5bo$bo2b2obob7o4bo$bo3bo4b2obob2o3bo$bo
3b2obo2b2obo2b2obo$bobo2bobo2bobo2bobobo$bo18bo$ob18obo$bo18bo!

Edit:

I may try my hand at a bit of hacking to create a pseudo-symmetry with some sort of alternative soup shape that's more B2a-friendly, but I don't have time at the moment (maybe tomorrow).

Just place an alive ring of cells around it e.g.:

Code: Select all

x = 37, y = 18, rule = B2-ek4i8/S04et
19b18o$4o3bobo4bo4b5o3bobo4bobo$ob2o2b4ob4o4b2ob2o2b4ob4obo$4bo2bobo2b
2obo3bo4bo2bobo2b2ob2o$o3bob2obobo3bo3b2o3bob2obobo3b2o$3bob2obo2b5o3b
o3bob2obo2b6o$obob3o2b3o2bo4b2obob3o2b3o2bobo$2bo3bobobo2b3o3bo2bo3bob
obo2b4o$bob3ob2ob3o2bo3bobob3ob2ob3o2b2o$5b3o2bob4o3bo5b3o2bob5o$4o5bo
bob3o3b5o5bobob4o$2bob4o6bo4bo2bob4o6bobo$2o5bob2o8b3o5bob2o5bo$3b6o2b
3o5bo3b6o2b3o2bo$4o3b3o2b4o3b5o3b3o2b5o$o3bo3b2ob2obo4b2o3bo3b2ob2obob
o$6obobob2o6b7obobob2o3bo$19b18o!

An alternative which doesn't kill off the activity quite so much is a dotted ring of cells:

Code: Select all

x = 117, y = 117, rule = B2-ek4i8/S04et
2bo3b3o5bo$2o2b4ob3o2b2o$bob2ob3o5b2o$2b2obob2ob2o2bo$bobo4bo5b2o$bobo
b5obo$b2ob2ob2ob2ob3o$o2bo4b3obo$2bob4obo5bo$4obo2bob3ob2o$3bo2bobo2bo
b3o$bobobobo3bo3bo$2b5o5b2o$2b2o2b2ob2obo2bo$3bob3o3b2o$b2o5b2ob3o34$
49b18o$49bo2bo3b3o5bobo$49b3o2b4ob3o2b3o$49bobob2ob3o5b3o$49bo2b2obob
2ob2o2bobo$49bobobo4bo5b3o$49bobobob5obo4bo$49bob2ob2ob2ob2ob4o$49b2o
2bo4b3obo3bo$49bo2bob4obo5b2o$49b5obo2bob3ob3o$49bo3bo2bobo2bob4o$49bo
bobobobo3bo3b2o$49bo2b5o5b2o2bo$49bo2b2o2b2ob2obo2b2o$49bo3bob3o3b2o3b
o$49bob2o5b2ob3o2bo$49b18o33$99bobobobobobobobobo$102bo3b3o5bobo$99b3o
2b4ob3o2b2o$101bob2ob3o5b3o$99bo2b2obob2ob2o2bo$101bobo4bo5b3o$99bobob
ob5obo$101b2ob2ob2ob2ob4o$99b2o2bo4b3obo$102bob4obo5b2o$99b5obo2bob3ob
2o$103bo2bobo2bob4o$99bobobobobo3bo3bo$102b5o5b2o2bo$99bo2b2o2b2ob2obo
2bo$103bob3o3b2o3bo$99bob2o5b2ob3o$100bobobobobobobobobo!

[2718281828]

One of the B2a rules with a pseudosymmetry census is B2an3ekr4i7c/S1c2ci3iqy4-a5678. The pseudo-symmetry is called ee9-test. I don't know if the modified hashsoup has been published, but the soups appear to all look like this:

Code: Select all

x = 22, y = 22, rule = B2an3ekr4i7c/S1c2ci3iqy4-a5678
bo18bo$ob18obo$bo18bo$bobobobo2bob2o4bobo$bob7o3bobo2bobo$bo4b2obobob
3ob2obo$bo2b5obo2bob4obo$bobob3o3bobo2b2o2bo$bo3bob2obobob2ob2obo$bobo
2b2o3bo3bo4bo$bobobobob2o2b4o3bo$bo4b2ob2obo2bob2obo$bo3b5ob2ob5obo$bo
bo2bo5b2obo2bobo$bo2bobob2o4bo5bo$bo2b2obob7o4bo$bo3bo4b2obob2o3bo$bo
3b2obo2b2obo2b2obo$bobo2bobo2bobo2bobobo$bo18bo$ob18obo$bo18bo!

Confirmed. However, I don't understand the existence of some linear growth pattern. Anyway - this is quite fast - almost 1000 soups a second. Unfortunately we don't get ships from this, just oscillators (and indirectly guns).

By the way - I think one of the most interesting B2a rules I know of.

In general - I think it is worth adding an 'eating' frame around the soup - B2an3ekr4i7c/S1c2ci3iqy4-a5678 is an excellent example - otherwise it would have been tough to find guns fr the periods p=7 to p=32.

[LaundryPizza03]

This rule contains a ship that travels at 10c/14o. It was discovered by wildmyron (possibly using LLS) in January 2018. I rediscovered the same ship independently later on, but I can't remember when. Might this rule be apgsearchable with the border?

Code: Select all

x = 6, y = 5, rule = B2aci4aknrz5j/S03r4i5y
5bo$3bobo$o$3bobo$5bo!

Code: Select all

x = 64, y = 64, rule = B2aci4aknrz5j/S03r4i5y
b2obobob2obo2b5o2bo5b5ob3o3bo2b2obo2bob2obob2o3b3o$3bobo2b3ob4o3bob2ob
obo2b8obo5b5o2bobo3b4ob2o$2bob2o2bo4bobo3b2ob2o7bo2b2ob3ob3o2b4o2b3o2b
2o3b2o$3bo3bobo4b2o2b2ob2o2b2o2bo2bo8b2obo2bo2b2o4b4ob2o$b2ob3obob3ob
2ob2ob5ob2ob3o4bo2b2ob3o2b2obob3ob2o2b4o$o2b3o2bo2bo2bo2b4ob2o2bobob2o
bobo3bobob2obob2o2b5obob3o$bo2bo4b3o3bobo4b3o3b2o3bo4b5ob2o2bo2bob2obo
3bo2bo$4obo5b5o2b3o2bo2bo2bo2b2o3bobo4b2o2b4o2b3ob3o$2ob7o4b2o2bo2bobo
3b2ob5obob2o5b2ob5obo2bo3b3o$2o3bob6obo2bo2b7obob2ob2obobob4obo6bo2bob
ob3obo$o2b4ob3ob2ob2ob2ob2o4b4obob2o2bob2o2bob3o10bo2bo$b4obobo2b4obob
2obobobo2bobo2b3obo2bo6b4obo5b2o$2bo7bo3bo2bo3b3o2b3o4bobobob2o7b2o2bo
2b3o2b3o$2obobo2bo3bo3b3obob3o2bo4bobo3b2o4b2o4bo2b3o3b2obo$5obo2b2o2b
obobo5bo2bobo2bo3b4o3bo3bobobob2ob2obob2o$b6o4bob3obo2bob2ob2obobo3b2o
bo4b2o7bob2o2b2o$2obo4b3obo2bob4obo3bo3bob2o2bo2bo4b3obob7ob2o2bo$2bo
4bobob3o3b5obob2o3bo3bobo2bo3bobo3b4o2bo6b2o$obo2b2o3b3obob4o3bo2b4o3b
2o2b2o4bo6b2ob2o2bob3o$3o2b2obo4b2ob2o2b2obo3b2obob2o2bob2obob2o5b2ob
3o2bo2bobo$6b4obo3bo2b2obob2o4b2obob3o2b2o3bob2o4b2o2b2o3bobo$bob2obo
3bobo2bo5b2obo7bo2bo2b5obo3b3obobo3b3o$2ob4o2bo3bo3bobobo3bob4ob2ob3o
3bo3b2obob3o7bob2o$5bo2bo4bo5b2o2bobo2bo2b3obob4o2bob2o3b3o2b4o3b2o$5b
o3bobob2ob3obo2b6ob2ob2o4b2o5bo2bo2bo7bo$obo3bo2b2o2b4obo3bobo4b2o2b2o
2bob2obob3ob6ob2o2b4o$5b4ob2o2bob3ob2o2bo2bob2obo6bobob2obobo4b5o2b4o$
2b2ob2o2bob2ob2obob4obo2b4obo2bobob4o3bobo3bo2bob2obo2bo$3ob3o3bo3bobo
6b2ob3obob4obobob4o2bo2b4ob2obo2bo$2b3ob2o4b2o3b2obob2o6b3obo2bo2b2ob
2obo2b2o2b7obobo$2bo2bob2obob2obob2o3b2obo4b3ob2o2bo2b2o2b3o2b2o3bo2b
2obobo$2b4o2b2obobo3bob6o5b2ob3obo4bo4b2obobo4b2o2bobo$o4b3obobob6o3b
2o2bo2b2o5bob2o4bo4bob7ob4o$b2o2bob7ob2obob2ob3o2b2obobo3b4obo2b2o2b2o
bob2ob7o$o5bo2bob2o3b3o2bo3b5ob2ob2ob2o3bo4bo2b3o2bo3bob2o$bo2bobo6bob
3ob5ob3obo2b3o2b2o2b2o3bo2b2o2bo2bo2b2o$obobo3bobobob5o2bob3ob4obobob
2o2bo2b4obo2b9ob2o$3bo4b3ob5ob2o3b3ob8obob3obob2ob2o2b2ob3ob5o$bo2b2ob
o2bo3bo2b2o3bo2b3ob4ob7o3bobo4b2obo2bob3obo$4o7bobob2o2b2o3bob2o2bo2b
3ob2o5bobob3o4b2o3bo2bo$5o4b2ob4o10bobob2ob2o3b2obo2b7ob2ob5ob2o$2bo3b
obob2o3bobo2bob3o4bo3b3o4b2obo4bo5b2o6bo$3b4o2bo3b3obobo6bobo4bobo2bob
ob7obo2bob3obo2b2o$2b3ob5ob3o2b2o2bob3o2b3o2bo2bo4b6o6b6o3bo$5bob6obob
obo3bo2bobo2b3obo3bob2ob2ob2obo2b4obob4o$2ob2obobo3b2obob2o7b2ob3ob2ob
o2bo2b2o2b3o4b2o5bobo$obo3b2ob4o2bob2o2b2ob3obobob4o4b5o8b3obob5o$2bo
3bo3b2ob3o2bo4bob3obo2bobobob2o2b2o2b5obobobob2o2b2o$o3bo4bob2ob2obo2b
3o3b3obo2b4ob3o3b3obobo2b2obob3o$o2bob2ob2o2b2o4b2ob2o3bob2ob2o2bo2bo
2bo5b2obobob2obo4b2o$6o2bo2bobobo3bo2b3o2bob4ob2obo3b7obo2bob2obob2o2b
o$bobobob2o3bobobo2bob4obob2ob3o5b2o2b2o3b3ob2ob5o$2bobo3b7o2bobob3o2b
3ob2o2b2ob2o4bob5o3bob3o3bobo$bobobobo2b3o3b3o5bo3b2obo2b7ob3ob4o3b6ob
2obo$o2b2o3bobo2b4o7b3o5b3obo2bo2b4o2bo4b3ob7o$o5bobobob2obo2bob2ob2ob
o2b2o8b2ob2o3bobo5b2o3b4o$bob2ob3obob2ob3obo2b3ob2o2b5obobo5bob4obo3bo
3bobobo$o3b4obobob2o3b3o4bob2o2bob3obob2obob4o2bob2obo2b2ob3o$o4b2obob
2obo6bo2bo2b2ob2ob4o6bob2o4bobo3b4o2bo$3b3o2b3o3bo3bo8b2ob2o3bob2ob4ob
4ob4o2bo2bo3bo$bobobo5b6ob3o2b2o3bob2o7b3obo2b4o3bo4bobo$2o3bo3b2ob7o
3b3o2b2obobo3bobob3obob2obob2o5b3obo$obob2o3b2obo4b2o2bob4o2bo4bob2o3b
4ob2obo2bo3bo2b2ob2o$bo4b3o2b2obobob2obo4bo2bo2b3obo2bob2ob3o4b2obo2b
4obo!

Why plain apgsearch doesn't work:

Code: Select all

x = 12, y = 9, rule = B2aci4aknrz5j/S03r4i5y
3o$4bo$4bo$obo2$o2bo2bo2bo$11bo$11bo$o2bo2bo2bo!

By the way, does anyone know of an oblique ship anywhere in this rulespace?

[wildmyron]

This rule contains a ship that travels at 10c/14o. It was discovered by wildmyron (possibly using LLS) in January 2018. I rediscovered the same ship independently later on, but I can't remember when. Might this rule be apgsearchable with the border?

Code: Select all

x = 6, y = 5, rule = B2aci4aknrz5j/S03r4i5y
5bo$3bobo$o$3bobo$5bo!

From what a can remember I found that ship with some variation of searchRule-matchPatt.py

I would say that adding a border could definitely help with apgsearch-ability of this rule, but I don't think you could rule out that breeder appearing even with the border.

By the way, does anyone know of an oblique ship anywhere in this rulespace?

Which rulespace precisely are you asking about?

[LaundryPizza03]

This rule contains a ship that travels at 10c/14o. It was discovered by wildmyron (possibly using LLS) in January 2018. I rediscovered the same ship independently later on, but I can't remember when. Might this rule be apgsearchable with the border?

Code: Select all

x = 6, y = 5, rule = B2aci4aknrz5j/S03r4i5y
5bo$3bobo$o$3bobo$5bo!

From what a can remember I found that ship with some variation of searchRule-matchPatt.py

I would say that adding a border could definitely help with apgsearch-ability of this rule, but I don't think you could rule out that breeder appearing even with the border.

By the way, does anyone know of an oblique ship anywhere in this rulespace?

Which rulespace precisely are you asking about?

A sector of B2a rulespace with low explosiveness, like the one around B2ac3q/S0.

[Hdjensofjfnen]

A sector of B2a rulespace with low explosiveness, like the one around B2ac3q/S0.

viewtopic.php?f=11&t=1971&start=116
EDIT: Whoops, misread the question.

[LaundryPizza03]

Here's one that is apgsearchable and has a (2,1)c/3:

Code: Select all

x = 4, y = 5, rule = B2ac3aq4ae5i/S02an3ar4jqrt5c6i
bo2$2b2o$ob2o$3bo!

EDIT: Adding B3c eliminates a breeder based on the (2,1)c/3.

Code: Select all

x = 4, y = 3, rule = B2ac3aq4ae5i/S02an3ar4jqrt5c6i
2b2o$ob2o$3bo!

Code: Select all

x = 4, y = 3, rule = B2ac3acq4ae5i/S02an3ar4jqrt5c6i
2b2o$ob2o$3bo!

[Disaster16439]

Moved from new thread to existing thread --hotdogPi also isn’t it just funny how the thread name matched exactly, other than capitalization? — Disaster

THIS THREAD IS FOR DISCUSSING NON-EXPLOSIVE INT B2a RULES, WITHOUT B0

The main rulespace is B2-ek/S0

I don’t think anyone has seriously explored B2a rules. I’ll change that. B2-ek578/S03e458, while full of puffers, has interesting dynamics that might make sparky oscillators possible. There’s also this small c/7:

Code: Select all

x = 3, y = 4, rule = B2-ek578/S03e458
bo$3o$obo$obo!

It can barrel through dots, so much that it appeared in the middle of some dots and escaped:

Code: Select all

x = 7, y = 17, rule = B2-ek578/S03e458
6bo3$6bo2$3bo3$3bo5$bo$3o$obo$obo!

I just realized it has a 3 cell phase

Code: Select all

x = 1, y = 4, rule = B2-ek578/S03e458
o2$o$o!

Here are some reactions:

Code: Select all

x = 75, y = 52, rule = B2-ek578/S03e458
39bo2$39bo$39bo29bo2$69bo$69bo2$43b2o2$43bo$73b2o2$74bo24$o2$o$o27bo2$
28bo$28bo2$4b2o2$6bo$5bo26b2o2$31bo$32bo!

If we can get a mess, a c/7 puffer might be possible.
Growing spaceship:

Code: Select all

x = 6, y = 12, rule = B2-ek578/S03e458
b2o2$o2bo6$5bo2$5bo$5bo!

A rake should be possible.
Edit 1:
2c/14:

Code: Select all

 x = 11, y = 4, rule = B2-ek578/S03e458
o9bo2$o9bo$o4bo4bo!

oops im stupid the stuff is c/8 Not c/4 :
My 230th post!
230=2x5x23

Lets bring this thread to 200 pages!
Exploring B2-ek/S0 rulespace again, heres a dirty puffer:

Code: Select all

x = 13, y = 11, rule = B2-ek/S01
3$3bobobo$7bo$bo5bo$3bob2o$8bo$4bo2bo$6bo!

Edit 1:
Strong Sierpinski:

Code: Select all

x = 4, y = 3, rule = B2-ek/S012ck
o$o2bo$b2o!

Clean 3c/6d:

Code: Select all

x = 4, y = 5, rule = B2-ek3c/S012c78
bo$2bo$3bo$2bo$obo!

p5:

Code: Select all

x = 6, y = 8, rule = B2-ek3c6/S012c78
2bo$bobo$4bo$5bo$bo$o4bo$2bobo$3bo!

This subrulespace has a weird emulator of some ca:

Code: Select all

x = 41, y = 7, rule = B2-ek3c4eq6/S012c4c78
33bo2bo2bo$37bo2bo$o2bo2bo2bo2bo2bo2bo2bo$2bo14bo19bo$33bo2bo2bo$2bo
14bo22bo$o2bo2bo2bo2bo2bo2bo2bo!

Huh. Thats odd:

Code: Select all

x = 15, y = 9, rule = B2-ek3c4eq6/S012c4c78
10bo3bo3$bo2bo2bo2bo3bo$o10bobo2$11bo$bo2bo2bo2bo$o!

Idk what this rule is.
Edit 2:
I’m dizzy:

Code: Select all

x = 9, y = 11, rule = B2-ek3c4eq6/S012c4c78
b2o$o$2bo6$6b2o$8bo$6bo!

Sadly I couldn’t find a puffer that puffs the track.
Edit 3:
It seems like 3c/3 frontends cannot exist, so maybe no puffer that puffs the track can exist?

Another subrulespace, but I don’t have a specific rule(this one is non-notable, please don’t make patterns in it)

Code: Select all

x = 1, y = 1, rule = B2-ek3ce4cj5c6-ce78/S03cky4aijyz56-ei78
o!
[[ RANDOMIZE ]]

I’m trying to find one in this subrulespace that has a slow orthogonal/diagonal spaceship (natural)

[LaundryPizza03]

Another subrulespace, but I don’t have a specific rule(this one is non-notable, please don’t make patterns in it)

Code: Select all

x = 1, y = 1, rule = B2-ek3ce4cj5c6-ce78/S03cky4aijyz56-ei78
o!
[[ RANDOMIZE ]]

I’m trying to find one in this subrulespace that has a slow orthogonal/diagonal spaceship (natural)

How is this rulespace defined?

[Disaster16439]

Another subrulespace, but I don’t have a specific rule(this one is non-notable, please don’t make patterns in it)

Code: Select all

x = 1, y = 1, rule = B2-ek3ce4cj5c6-ce78/S03cky4aijyz56-ei78
o!
[[ RANDOMIZE ]]

I’m trying to find one in this subrulespace that has a slow orthogonal/diagonal spaceship (natural)

How is this rulespace defined?

Ehh, just keep the “blobby” dynamics. So you don’t want huge blobs taking over, but also not no blobs


Edit 1:


This subsubrulespace loooks interesting, though no diagonal spaceships:

Code: Select all

x = 1, y = 1, rule = B2-ek3ce4cejkz5c6-ce78/S03cjky4aijyz56-ei78
o!
[[ RANDOMIZE ]]

I think I’ll explore this rule, it seems like objects with D2 symmetry are quite hard, but not impossible, to destroy

[Disaster16439]

Well, I guess I never considered B3i. I really really like this rulespace. Can someone explore it more? A high-period oscillator and a subluminal/diagonal small spaceship is needed

Code: Select all

x = 1, y = 1, rule = B2-ek3ckq4cz5-ceny6/S03i4cez5aci6ain78
!
[[ RANDOMIZE ]]

This B3q rulespace also doesn’t have any puffers

[Disaster16439]

Well, subluminal/diagonal spaceships OR high-period oscillators have not been found, but oh well. I still like this rule. Just like the roughly cgol-like rulespace will sometimes have Life in the name (we don’t talk about 3-4 life. plagiarism.), roughly just-friends rule space has friends in its name (yes, even the ones with c/4d instead of c/6d gliders). The non-explosive b2a rule will have Plow in it’s name (A reference to seeds). This one will be called CrossPlow, as its most useful component is the Cross. The spaceship will be the Halfmoon, as it is the moon but with half the frequency. Misc stuff:

Code: Select all

 x = 119, y = 85, rule = B2-ek3q4e/S03i4-ay5ace6en
4bo22bo29bo2bo11bo$3b3o20b3o25bo2bob3o9b3o$4b3o18b3o25b3o4b3o9b3o$5bo
2bo14bo2bo27bo6b3o9b3o$bo5b3o12b3o5bo31b3o7bobo$3o5bo14bo5b3o31b3o$bo
28bo33bo2$5bo10bo9bo$4b3o7bo10b3o$5bo8bo11bo$16bo14$7bo$6b3o2bo$7bo2b
3o94bo4bo$11bo94b3o2b3o$107bo4bo$21bo$18bobo97bo$18bobo95bo$21bo94bo$
118bo28$88bo7bo$87b3o4bo$88bo5bo$96bo8$61bo$60b3o$59b3o$60bo$67bo$65bo
$65bo$67bo$60bo$59b3o$60b3o$61bo!

Edit 1:


Yeah there’s some stuff I missed.

Code: Select all

x = 16, y = 33, rule = B2-ek3q4e/S03i4-ay5ace6en
4bo$3b3o$4bo2bo$6b3o$7bo3$4bo10bo$3b3o7bo$2b3o8bo$3bo11bo11$3bo$2b3o$
3bo2bo$5b3o$6bo3$3bo10bo$2b3o7bo$b3o8bo$3o11bo$bo!

Code: Select all

x = 10, y = 35, rule = B2-ek3q4e/S03i4-ay5ace6en
2bo$b3o$ob3o$3bo$2bo$2bo$3bo$ob3o$b3o$2bo3$3bo$2b3o$bob3o$4b3o$3bobo3$
3bobo$4b3o$bob3o$2b3o$3bo4$3bo4bo$2b3o2b3o$3bo2bobo3$3bo2bobo$2b3o2b3o
$3bo4bo!

edit 2:

Did someone ask for oscillators?

Code: Select all

x = 191, y = 42, rule = B2-ek3q4e/S03i4-ay5ace6en
77bobobo2$77bo2$26bo3bo46bobobo$125bo3bobobo$26bo3bo46bo3bo76bo3bo2bob
obo12bo3bobobo$3bo3bo117bo3bo3bo$26bo3bo46bobobo76bo3bo2bo3bo12bo7bo$
3bo3bo117bo3bobobo$26bo3bo127bobobo2bo3bo12bo7bo$3bobobo117bo3bo3bo$
26bo3bo131bo2bo3bo12bo7bo$7bo117bo3bobobo$162bo2bobobo12bo7bo$7bo4$76b
o4bo$75b3o2b3o$74b3o4b3o$73b3o6b3o$2bo4bo66bo8bo$b3o2b3o16bo4bo46bo2bo
77bo4bo$3ob2ob3o14b3o2b3o44b6o75b3o2b3o$bo6bo14b3o4b3o41bo8bo72b3ob2ob
3o13bo4bo$4b2o18bo2b2o2bo44b6o73b3o6b3o11b3o2b3o$4b2o71bo2bo44bo4bo25b
o8bo11b3ob2ob3o$bo6bo65bo8bo40b3o2b3o44b3o6b3o$3ob2ob3o14bo6bo41b3o6b
3o38b3o4b3o44bo8bo$b3o2b3o14b3o4b3o41b3o4b3o40bobo2bobo24bo8bo$2bo4bo
16bo6bo43b3o2b3o72b3o6b3o$76bo4bo74b3o4b3o$157b3o2b3o$126bo2bo28bo4bo$
125bo4bo3$124bo6bo$123b3o4b3o$124bo6bo!

Edit 3:

New halfmoon loop and also a signal loop, unfortunately you must have the signal in a specific configuration, otherwise it’ll fail

Code: Select all

x = 30, y = 17, rule = B2-ek3q4e/S03i4-ay5ace6en
25bo$23bo$22b3o$21b3o3bo$20b3obo$19b3o6bo$20bo6b3o$10bo15b3o$6bo2b3o
13b3o$5b3o2bo9bo3b3o$6bo16b3o$24bo$22bo$o8bo$2bo5b3o$2bo6bo$o!

Edit 4:

A much smaller halfmoon reflector, but note they are NOT interchangeable

Code: Select all

x = 19, y = 6, rule = B2-ek3q4e/S03i4-ay5ace6en
8bo$2bo7bo5bo$10bo$bo6bo8bo$3o13b3o$bo15bo!

Edit 5:

Yeah this new component is very good

Code: Select all

x = 17, y = 22, rule = B2-ek3q4e/S03i4-ay5ace6en
o$2bo$2bo8bo3bo$o13b3o$12bo2bo$11b3o$12bo7$15bo$14b3o$o14bo$2bo$2bo9bo
$o$13bo$12b3o$13bo!

Edit 6:

Holy that’s a lot of technology

Code: Select all

x = 78, y = 14, rule = B2-ek3q4e/S03i4-ay5ace6en
71bo$70b3o2bo$71bo2b3o$75b3o$65bo10bo$o66bo$2bo6bo57bo9bo$2bo62bo$o9bo
65bo$9b3o63b3o$8b3o63b3o$7b3o65bo$8bo$6bo!

Edit 7:

We’re going to need an oscillator collection soon, more oscs:

Code: Select all

x = 136, y = 19, rule = B2-ek3q4e/S03i4-ay5ace6en
53bo$52b3o$50bo2bo2bo$6bo42b3o3b3o15bo$5b3o21bo18b3o5b3o13b3o$6bo42bo
7bo12bo2bo2bo$69b3o3b3o21bo$25bo7bo36bo5bo21b3o28bo$bo8bo38bo7bo15bo
22bo2bo2bo25b3o$3o6b3o14bo5bo15b3obobob3o36b3o3b3o23bob3o$bo8bo14b3o3b
3o15b3o3b3o38bo5bo23b3ob3o$bo3b2o3bo15b3ob3o17bo2bo2bo16bo25bo25b3o3b
3o$3o6b3o15bob3o20b3o40bo7bo20b3o5b3o$bo2bo2bo2bo17b3o22bo69b3o7b3o$
29bo94bo9bo$99bo$6bo$5b3o118bo5bo$6bo122bo!