ConwayLife.com

xs31_69b88ci6zciq3qq1 in an absolutely horrendous 20G:



Reduced to 19g with almost as horrendous 3g synth of the loaf-blinker pair


For something less messy in a future reduction, these loaf+block pairings from the synthesis above are also 3g in cost



18G by replacing the 3-glider 3o ...

xs31_69b88ci6zciq3qq1 in an absolutely horrendous 20G:
x = 90, y = 85, rule = LifeHistory
A$.2A$2A18$62.A$62.A.A$62.2A$47.A$45.A.A$46.2A$72.A$70.2A$44.A17.A8.2A
$42.A.A17.A.A$43.2A17.2A3$56.A$56.A.A$56.2A$35.A$36.A$34.3A8$74.A$44.
3A26.2A$46.A26.A.A$45.A4$31.3A$33.A$32.A4$30.2A$29.A.A$31.A6.A$38 ...

The best 8-cell methuselah, according to my search, has a final population of 2464 (lifespan 12505):
x = 55, y = 64, rule = B3/S23
54bo$54bo$54bo59$o$3o$bo!

This one didn’t win, but it did make two lightweight spaceships:
x = 15, y = 28, rule = B3/S23
12bo$12b3o$13bo23$o$o$o!

I also saw 8-cell ...

x = 7, y = 5, rule = B3/S23
3o$o2bo3$4b3o!
8cells init, final population 1342


Final population 1504 (stabilizing at generation 11238):
x = 31, y = 25, rule = B3/S23
3o22$28bo$28b3o$29bo!
I’m currently running a Python program to find 8-cell methuselahs like this.

Edit: I didn’t see the ...

Why does long⁸ snake not have an article, even though long⁷ snake and long⁹ snake do?

Alternate eater 1 catalysis that I’ve never seen before:
x = 101, y = 76, rule = LifeHistory
97.2A$97.A.A$99.A$99.2A3$97.2A$97.A.A$99.A$99.2A3$6.A3.A.2A83.2A$6.3A
.A3.A18.3A61.A.A$5.2A4.3A3.2A15.2A2.2A59.A$5.A3.A6.2A14.A2.A.A61.2A$A
3.A4.2A.A3.A2.A.A11.A4.A.A$.A.3A5.3A2.A4.A13.A4.2A$.A3.4A.A.2A3.A ...

Wing-to-chaos that doesn’t look very useful (or accessible). I only kept it because of two double catalyses:
x = 30, y = 28, rule = LifeHistory
18.2A$18.A$16.A.A$5.A6.2A2.2A$5.3A4.2A$8.A$7.2A$28.2A$28.A$17.D8.A.A$
17.D8.2A$17.D2$11.2A$2.D7.A2.A$.3D7.A.A$2D.2D7.2A$.3D5.D13.2A.A$2.D4.
3D13.2A.3A$6.D2 ...

Synthesis sketch for xs30_g8ge996z12ib8j156zx11 (based on this soup ):
x = 31, y = 21, rule = LifeHistory
12.D$13.D10.3D.3D$11.3D7.D2.D3.D$15.2D3.3D.3D.3D$14.D6.D4.D.D.D$4.A19.
3D.3D$5.A9.2D$3.3A$16.D.D5$3A$2.A$.A3$14.2A$14.A.A$14.A!
[[ GPS 30 T 56 PAUSE 1 PASTET 56 PASTE .A$2.A$3A$4.2A$3.A2$4.2A2 ...

xs30_0ciabaicz6iq2rq in 12G. This is definitely suboptimal.
x = 191, y = 131, rule = LifeHistory
11.F6.A144.F$11.F7.A143.F$11.F5.3A143.F$11.F151.F$11.F151.F$11.F151.F
$11.F151.F$11.F151.F$11.F151.F$11.F151.F$11.F151.F$11.F151.F$11.F151.
F$11.F151.F$11.F151.F$11.F151.F$11.F151.F$11.F151.F$11.F151.F ...

thanks now have a harder one that i dug up :3c
x = 54, y = 29, rule = LifeHistory
22.D.3D$22.D3.D$22.D.3D$22.D.D5.D$22.D.3D4.D$32.D$18.16D$32.D$31.D$30.
D$39.C3.C$40.C2.C$41.3C3$.2A5.2A26.2A5.2A$A2.A4.2A25.A2.A4.2A4.3C$A.A
32.A.A9.2C$.A34.A2$49.3A2$16.A36.A$7.3A4.2A26.3A8.A$16.A32.A3.A$11.A34 ...

I wonder if it's possible to use 3 cells on the first turn, then at most one cell from that point onwards. The only reason you need 3 cells in the beginning is because otherwise whatever you place ends up dying immediately.


(I think) all possibilities up to 2 turns (starting from block):
x ...

I personally don't like solutions that rely on timing, like the previous two posts, but I won't stop anyone from making them.
Here's a 3-7 solution for a beacon (no timing required):
x = 99, y = 13, rule = LifeHistory
45.2C15.2A16.2A14.C2A$46.C15.2A16.2A15.2A$79.C$25.2A15.2A15.2A16.2A$24.
A.A14.A ...

Slightly different puzzle: How many cells per turn does it take to create a certain object? Since a lot of the time, the answer will be three, the tiebreaker is the number of turns it takes to create the object.
Here's all objects with at most 6 cells, with a few more past that thrown in at the end ...

LifeViewer ignores the y-coordinate in #P lines. Here, the dot is at (27, 0) instead of (27, 63):
#P 27 63
x = 1, y = 1, rule = B3/S23
o!

Edit: Adding [[ XOFFSET ]] and/or [[ YOFFSET ]] breaks copying and pasting. Specifically, an extra two times the offset is applied to the cells inside the ...

Unedited synthesis test for a random 17-cell still life :

x = 326, y = 101, rule = B3/S23
235bo50bobo$236bo50b2o$234b3o50bo3$201bo$202bo$200b3o4$236bo50bobo$237b
o50b2o$165bo69b3o50bo$164bo$164b3o137bo$202bo48bo53bo$203bo48b2o18bo30b
3o17bobo$201b3o47b2o18bo51b2o$271b3o50bo2$165b2o53b2o ...

…I have some questions.
Why does the tag start like this...
[size


TAGS size=1]
...instead of just this?
[size=1]


In the preview window, there's no difference; the TAGS attribute and the extra line breaks just get ignored. I put them in so the tags would be clearly visible in the text box ...

A few days ago, I heard a complaint on Discord about the unsearchability of the forums. After a little experimentation, I realized it could be solved fairly easily, so I wrote a program that fixes it. It’s called PETS (short for phpBB Enhanced Tagging System), and it lets you add and search for ...

3√93 − √701 ≈ 2.454547693231 (+0.000002238416).

The hexadecimal code #E0E8F0 can make text almost invisible , requiring you to highlight it. I'm pretty sure there's a hexadecimal code closer to the color of the background, I'm just too lazy to find one.

EDIT: It looks like post backgrounds have slight color alternation, so on this specific ...

Sorry it’s been a while, but I made a prototype of Conway’s Story Mode in JavaScript.
“Why make a separate prototype in JavaScript instead of just extending your Python version?”
Good question! I actually have multiple reasons.
JavaScript is usually faster than Python, so we can make the simulation ...

Doublepost for the long delay, and since this gun fires a different spaceship.
P184 LWSS on HWSS 6 gun:
x = 149, y = 121, rule = B3/S23
72b2o$72bo$66b2ob2obo$64bo2bobobo$64b2o4bo13bo$82b3o$81bo$81b2o2$61b2o
$60bobo5b2ob2o7b2o$59bo8bo3bo7b2o$58bo10b3o$58b2o10bo2$52b2o30bo$53bo
28b3o$51bo29bo ...

The fix should be adding this header:
Content-Security-Policy: default-src 'self'; script-src 'self';


That won't fix it. At least, without breaking more stuff.

By default, if a CSP contains a default-src or a script-src directive , then inline JavaScript is not allowed to execute. This ...

The /user endpoint allows for XSS (kinda):
https://catagolue.hatsya.com/user/%3Cbutton%20onClick=%22alert(%60XSS'd%60)%22%3E


This gives a less broken–looking site:
https://catagolue.hatsya.com/user/%3Cinput%20type%3Dbutton%20value%3Dsquareroot12621%20onclick%3Dalert(%26%2334%3BXSS%26%2339%3Bd ...

It seems the annoying telephone links can be removed by adding to the <head> of the webpage.

I can only see a broken-link image for that imgur.com URL.…


Because the URL points to a webpage, not an image. Here's the actual image of the "keychain" still life:
https://i.imgur.com/P1eLkBf.png

Regardless, this isn't a very notable still life. The bigger a random still life you discover ...