ConwayLife.com

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 ...

Using ElijahKen's redesign proposal for a reduction to gun_19, here's a 112x110 design for gun_19 that doesn't reduce the actual 113x99 design record but still reduces ElijahKen's original 113x112 attempt on this proposal:
<snip>
Edit 3: 108x110:
x = 108, y = 110, rule = B3/S23
27b2o ...

These are the combined two, three, and four eaters. It doesn’t show up in Catagolue except when you combine the four. Was I the first to discover it?

x = 51, y = 11, rule = B3/S23
25b2o18b2o$26bo19bo$25bo17b3o$25b4o14bo2b3o$2o18b2o6bo11b2obobo2bo$ob
o2bo14bobo2b2obobo9bobobobobobo ...

May I have the trusted flag? My account username is the same as my forum name: ElijahKen. I don't have specific edits planned, but I would like to be able to correct errata and suggest news items when I feel the need. I enjoy the Game of Life, and understand why I should not document my own ...

10G for the whole flotilla, split into three stages:
x = 144, y = 21, rule = B3/S23
122bo$123b2o$122b2o$141bo$141bobo$129bo11b2o$127bobo$68bo59b2o$39bo2bo
24bo64bo$43bo23b3o62bobo$39bo3bo65bo2bo19b2o$4bo35b4o20bo48bo$2b2o61bo
43bo3bo$3b2o58b3o44b4o$133b2o$o67bo63b4o$b2o65b2o62b2ob2o$2o65bobo64b ...

There is a lot of empty space above the p3 catalyst in this design. Might it be possible that a wider p3 could reduce guntrue_78 while still fitting into the red areas?


I'm pretty sure I tried that with LLS, and it came back impossible.

In other news, gun_19 reduced by one column with LLS ...

edit 2:
Single switch engine swimmerlane bait using just a block. That destroys the block and makes a block.
x = 121, y = 91, rule = B3/S23
16$63b2o$63bobo$64bo4$87b2o$87b2o$55b2o$55bobo$56bo6$47b2o$47bobo$48bo
3$77bo$76bobo$77b2o$39b2o$39bobo$40bo3$69bo$68bobo$69b2o$31b2o$31bobo$
32bo$41bo ...

Presenting... The LifeViewer Size Demonoid!!!
Using more parallel construction, it is p97970, velocity 55c/97970d, and about 3000 cells under LifeViewer MAXGRIDSIZE 14 size.
Population 14043 in this generation.
x = 12890, y = 13076, rule = B3/S23
372b2o$371bobo$372bo3$342bo8b2o$341bobo7b2o$341bobo ...

guntrue_18 reduced by one column with LLS (3400 -> 3350):
x = 67, y = 50, rule = B3/S23
30b2o4bo$31bo3bobo$31bob3obo$32bo3bo9b2o13b2o$34bo9bo2bo3b2o3b2o4bo$33b
3o6b4obob3obo2bo2b3o$36bo4bo4bobo4bo3bobo$31b3ob3o4b2o2bo2b2obob4obob
3o$29b2o3bo4b2obob3o2b2obo8bo2bo$27bo2b3o2bo3b2ob2o3bo2bob2o2b2o5b2o ...