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4 barrelled gun. P160

x = 88, y = 46, rule = B3/S23
27bo$27b3o$7bo22bo$7b3o19b2o$10bo49b2o4bobo$9b2o14b2o5b2o26b3o3b2obo$
25b2o4bobo30b3obo$31b2o27bo3b2o2$61b2o3bo$15b3o45b2obo$17bo48bo$3bo13b
o26b3o5b2o$2b2o9bob2o26bo8bo6bo4bo$bob2o7b2o19bo9bo2bo3bobo5bobo$3o2b
o35b2o3bo3b2o7bo3b2o3b2o ...

xs24_699eg6qz259611 in 8g:

67P5H1V1 to glider with a repeat time 269, based on the eater for the same spaceship, using staged recovery (due to which the exact placement of the rectifier does not affect repeat time):


I managed to find a way to eat that annoying active region, reducing the repeat time to 235 and removing ...

Reduction to a certain group of prime-period guns of family 31+120n (demonstrating using guntrue_8171 )

New design, using repositioned snarks and Semi-snarks (BB 13696)
x = 128, y = 107, rule = B3/S23
37b2o2bo$36bob4o$36bo$34b2ob7o$32bo2bobo6bo$32b2o3bob2o2b2o$36b2ob2o7b
2o$49bo$47bo$47b5o ...

Have you tried Callahan's G-to-H ?


Have you tried Syringe ?
x = 98, y = 91, rule = LifeHistory
38.A2.2A$38.4A$36.2A5.A$31.2A2.A2.B5A2.A$31.A2.A.2A.A4.3A$32.A.A.A.A3B
A$33.A.6B.3A$35.7B3.A$34.9B.A.A$34.6B2A.2BAB7.2A$32.8B2A4B7.A.A$32.12B
.2B6.A$31.17B3.3A$31.18B.AB2.2A$30.20B4A2.A$23.2A5.20B.B2 ...

p54 century shuttle (discovered before midnight UTC); p18 and p9 sparker examples but there must be a p6 that works

also wouldnt say that p1 and/or p2 and p3 bespoke catalysts are out of the question


I tried searching for a p3 bespoke catalyst with LLS, but got a p6 one instead:
x = 34, y ...

Wow! good one... in the mean time, I just got a lame g-to-h with horrible repeat time instead D: (though it features a time paradox)

...



I found an incredibly lucky way to reduce the repeat time to 311, down from around 812:
x = 89, y = 73, rule = LifeHistory
85.4B$84.4B$83.4B$34.A47.4B$32 ...

Gun_19 reduced to 10030 (down from 10176) cells by switching to a p38 based design:
x = 118, y = 85, rule = B3/S23
54bo3b2o$53bobobob3o$34b2o17bobobo4bo$35bo2bo15bobobobobo$32b3o3b3o15b
obob2o4b2o$20b2o9bo3b3o3bo13bobo8bo$21bo2bo6b2obo3b3o13bob2o6bobo$18b
3o3b3o8b2obo14bobo8b2o15bo22bo ...

Impossible looking failed p38 glider gun (that is still a p38 oscillator):
x = 85, y = 67, rule = B3/S23
32b2o8b2o$31bobo8bo$31b2o2b3ob2obo$41bo3b2o$33bo10bobo$33bo10bo$33bo5b
o3b2o$42bo$35b3o4b3o$45bo$44b2o2$39bo$43bo$31b2o5bo5bo$31b2o4bob3o2bo
$37bo$41bo3$41bo$37bo$31b2o4bob3o2bo$31b2o5bo5bo ...

Reduction of guntrue_935 (4080 -> 3819):
x = 67, y = 57, rule = B3/S23
47b2o2bo2bo$47bo3b4o$48b3o4b2o$52b3o2bo$36bo9b4ob2obobo$34b3o9bo2b4obo
b2o7b2o$33bo20bo10bo$26bo6b2o19bo8bobo$25bobo25bo5b2ob3o$26bo21bo10bob
2o$46b2o12b2o$31b2o14b2o10b3o$31b2o5b2o21bo$38b2o11bo6bo6b2o$48b3o7bo
3b2o2bo ...

P68 century hassler based on an almost-complete partial by hotdogpi on discord, completed by me:
x = 79, y = 84, rule = B3/S23
21bo11bo21bo11bo$21b3o7b3o21b3o7b3o$24bo5bo27bo5bo$23b2o5b2o6bo11bo6b
2o5b2o$36b3o11b3o$35bo17bo$26b2o7b2o15b2o7b2o$26b2o33b2o$32b2o21b2o$
20bo4b2o35b2o4bo ...

...
This one manages to form a complete p60 with trivial modification to one of the sparkers (not sure how it worked, I just put two of them together):
...


EDIT: smaller

x = 44, y = 63, rule = B3/S23
25b2o$24bo2bo$24bo$24bo$24bobo3bo$25bobo3bo$26bo4bo$27b4o$33bo$31b2ob
o$15bo15bo2bo ...

Here is a list of traffic light and honey farm pushes from the same program I found the complete ones about a month ago, but these don't have a completion yet. They are sorted first by object type, then larger offset, then smaller offset, then number of generations.

If it's a honey farm, it will ...

Two fireships can drag a boat. Known?
x = 23, y = 26, rule = B3/S23
17b2o$17b2o$16bo2bo$16b4o$15bob2obo$16bo2bo2$15b2o2b2o$4b2o8bo6bo$4b2o
$3bo2bo8bo4bo$3b4o9bo2bo$2bob2obo9b2o$3bo2bo$14b2o4b2o$2b2o2b2o5bo2bo
2bo2bo$bo6bo5b2o4b2o$15bo4bo$2bo4bo$3bo2bo$4b2o5b2o$11bobo$b2o4b2o3bo$
o2bo2bo2bo$b2o4b2o ...

The most useless thing I ever made.
(A "Null Catalyst" that does nothing .)
x = 11, y = 31, rule = DoubleB3S23
5.2A$4.A2.A$3.A2.2A$4.2A2.2A$.3A2.A3.A$A4.A.3A$.3A.A.A$3.2A21$6.3C$6.
C.C$6.C.C!



It can make this odd p15 pentadecathon variant in the style of eater on pentadecathon:
x = 21, y ...

Hexathlon partial
x = 18, y = 3, rule = LifeHistory
3.A2.A4.A2.A$C3A2.6A2.3AC$3.A2.A4.A2.A!

two p6 dot fountains (any of them in the sparker compilation) will work


In fact, it is in the sparker compilation, using a clever reaction with p6 pipsquirters that almost destroys them, but a ...

...
Challenge: Do better than 7/19.


Doesn't this descendant of the last code block in my previous post have density 96/(24*24) = 1/6 < 7/19?
<removed, because not relevant>
Or did you mean 1 generation parents with density < 7/19? I'm rather confused.
EDIT: Oh, you meant parents that are denser ...

The discussion so far is about parents of an all-ON board -- the T=-1 state. But the title only says "predecessors".

Are the any known results about T=-2 or earlier predecessors of the full board?

I've been curious about this as well, but the farthest back I've found is this T=-3 predecessor ...

Can someone create a LifeWiki page for the Carotenoid? I feel like it should have one, but it doesn't yet.

(Edit: first part removed as it is not relevant anymore)




Sorry if this is all just rediscoveries, it is my first dabble in searching for elementary spaceships.

Slight modification produces these 18c/36 puffers (Known?)

x = 11, y = 16, rule = B3/S23
b3o4b3o$bo2bo2bo2bo$o3bo5bo$2bobobo3bo ...

Based on a puffer posted by sog on Discord , I found a rather sparky minpop 61 2c/4 spaceship using JLS. I'm not sure how to tell if it is new or not (it likely isn't, but I want to check). Can someone instruct me on this? (Only the bottom half is potentially new)
x = 11, y = 21, rule = B3/S23 ...

...
Cis variant: x = 28, y = 42, rule = B3/S23
3$3b2o16b2o$4bo16bo$3bo18bo$3b2o16b2o$5bo14bo$3b3o3bo6bo3b3o$2bo5bobo
4bobo5bo$2b2o4bobo4bobo4b2o$9b2o4b2o$5b2o12b2o$4bobo12bobo$4bo16bo$3b
2o16b2o$7b2o8b2o$6bob10obo$5bo4bo4bo4bo$5b5o6b5o$8bo8bo$5b2o12b2o$4bo
b2o4b2o4b2obo$4bo3bo2bo2bo2bo3bo ...

Alternative version of the higher-clearance P36 traffic jam, originally found in B35y/S23 but also works in normal Life: x = 46, y = 16, rule = B3/S23
17b3o$2b2o5bobo5bobo6b3o$2bo2bo2bo2bo5b3o6bobo5bobo5b2o$3b2ob3o17b3o5b
o2bo2bo2bo$3o3b3obo26b3ob2o$o2b2o6bo2bo20bob3o3b3o$2bo3b3o2bo3bo15bo2b ...

P12 honey farm hassler by eRroR_6o6 on discord, reduced by me:
x = 26, y = 30, rule = B3/S23
5bobo4bo$4bob2o3bobo$4bo6bobo$2ob2ob2o2b2ob2o$2obo2bo6bo$2b3o3b4o2bo$
2o2bo6b3o$2o4b2obo$10b2o11b2o$3b2o3bo3bo9bobo$4bo6b2o9bo$4bobo14b2o$5b
2o3bo9bo$9b3o3b2o3b3o$2b2o4bo3bob2obo5bo$2bo5bob2obo3bo4b2o ...

P8 pi hassler, which currently has me on the fence between "there's no way this is new" and "there's no way this is known":

x = 14, y = 19, rule = B3/S23
b2o$obo$obob2o6bo$bobobo4b3o$3bo5bo$3b2o4b2o$3b3o$3b3o$3b3o2b2o2b2o$3b
3ob2o3b2o$3b2o3bo$3bo5bo$bobobo$obob2o$obo5bo$b2ob5o$4bo$4bobo$5b2o ...