ConwayLife.com

I defininitely agree that a standard way to specify SAT problems would be useful for CA problems, however I think it's hard to represent it without writing code. From experience: I've tried to use ikpx, lls, and lsss for various problems (mostly unsuccessfully). For most, I had to write code to ...

The application of CGOL rules does require a grid and a lot more compute power than you will get from a ZX81.

Not quite true: the ZX81 can be programmed to simulate life at plenty of generations per second. Based on my knowledge of z80 assembly, I'd guess that you could easily get 100gps - and ...

I now feel silly because I didn't actually see that it was just a p7 that sets a bit, and the "p5 component" that LLS found is actually just stable... LLS gave me exactly what I asked for, I guess. Re-running with "c 0 1" to see if anything else pops up - I thought I had something earlier that had a ...

Can anyone complete the p7 component of this p14?
x = 19, y = 25, rule = B3/S23
6b2o3b2o$6bo5bo$8bobo$7b2ob2o$4bobo5bobo$4b2ob5ob2o$7bo3bo$2o2b2obo3bo
b2o2b2o$o2bobobobobobobo2bo$b3obo2b3o2bob3o$7b2ob2o$b3o3bo3bo3b3o$bo4b
o5bo4bo$4bobo5bobo2$5bob5obo$4bo9bo$4b2o2bobo2b2o$2o2b2obo3bob2o2b2o$o ...

I don't think it's multi-threaded like ikpx and qfind, and I'm not sure how well the search space can be split up. It does require a seedcolumn, so you could still split the search up based on that.


The shell scripts have a $threads variable which is passed to the rust program. Often ...

flame, flame

Since I'm using dr to smash oscillators together I need to run it a lot of times. Depending on the specific oscillators, a single pair can take from hundreds to thousands of runs, with each run taking (again depending on specifics) around 5 seconds on average, or a couple hours for the whole run.

I ...

Here's a 4n-1 reaction of 1-2-3-4:
x = 14, y = 17, rule = B3/S23
4b2o$5bo$2o2bo$o2bob3o$bobobo2bo$2obo3bo2b2o$bo6b2o2bo$bob5o2bo2bo$2bo
4bobob2o$obob2o3bobo$2o2bo2bobo3bo$4bob2ob5o$5bo2bo$6b2o2b2o$11bo$10bo
$10b2o!
like the 6n+1, this would also work at p19.

A small p12, also with a 1-2-3-4 in it ...

Could someone with access to the wiki add dr to the LifeWiki:Life Links page? The Drifter page could also use a link to this thread.

EDIT by dvgrn: Done! If you'd like to have editing access to the LifeWiki yourself, just create a 'Hooloovoo' user there and let me know.

I am using a file called just dr.c, but I'm not exactly sure where I found it. I'm nearly positive it was from somewhere on the forums, but I recall it being relatively hard to find - the forum doesn't like to search for "dr" since it's too short.

Wow, it is hard to find. I was the one who ...

Excellent! I'd love to know more about your methodology. How do you find the stable background? Do you test all phase combinations? Even for periods with gcd=1, some phase combinations will cause the pattern to self destruct, while others will result in a phase shift oscillator

...


Also, do you ...

I'm pretty sure this 6n+1 phase-shift reaction is new:

x = 20, y = 21, rule = B3/S23
$8b2o$7bo2bo$7bobo3bo$8bob4o2bo$10bo3b3o$9bo3bo$5b2obo3bobo$4bobob2o3b
2o$3bo2bo8b2o$3bobob8o2bo$2b2obobo7b2o$5bo2b2obo2bo$5bobobob4o$6b2obo$
8b2ob2o$4b3o3bobo$4bo2b3o$7bo!

I'm currently working on a method ...

It's starting to seem like a good idea to just give a short comment section for most of these large patterns, and then point to more information whenever that's available. It's usually not very easy to pack information into 70-column ASCII text in a readable way, so let's put the details on the ...

A minor annoyance with this approach is that it opens the Help window. It's easy to avoid that by creating a zip file with a single Lua script that writes the .rule file in the right place and then writes and opens a temporary pattern file.is:

snip

I have two questions about this:
Is this ...

I think a caterloopillar fits in the self-cons category. In the caterloopillar topic, you noted

Have been watching the Caterloopillar in action, and it's really impressive how many interlocking problems have been solved and wrapped up in a nice neat package.
and I agree.

Faster Caterloopillars ...

I'm currently unable to download certain patterns in the Very Large Patterns page from within Golly. I tested with a couple-days-old build from git.

The patterns that don't work for me are: Hydra, Lighspeed Telegraph, 10hd Demonoid, 0E0P Metacell, and Mersenne-82589933. When I check the links in a ...

I think the formating in the Forum Rules post has changed. I'm guessing that code and /code tags should be in plain text somehow, and the wiki tags shouldn't be in the code block.

Segmentations is B12/S13
target is b2/s23
runes looks to be the same as segmentation
shine is b24/s23
Growing Crystallization is b23/s3
glint is b24/s34

When coding in TI-BASIC for things like cellular automata, a faster way of storing data than a list of pixels that are 'on' is to simply use the ...

Welp, I seem to have missed it. I'll still ping the official maintainer about it. I'll bring it up on the IRC channel, and I'll definitely make sure to join for the next one.

Does anyone else use gentoo, and can help to push this through the system?
https://bugs.gentoo.org/661360
(is there a packaging thread that would be more appropriate?)

How about something like this for input and output?
x = 130, y = 130, rule = LifeHistory
64.2D$64.2D20$88.A$87.A$42.2D43.3A$42.D.D$42.D15$23.A$21.A.A$22.2A80.
3D$106.D$105.D20$2D126.2D$2D126.2D20$24.D$23.D$23.3D80.2A$106.A.A$
106.A15$87.D$85.D.D$40.3A43.2D$42.A$41.A20$64.2D$64.2D!
Having more than ...

As far as I can tell, the version of golly in most linux distributions is ancient (at least gentoo and debian have 2.8, and android has 2.6 iirc). Are the maintainers of the Golly packages generally associated with the community, or the distro? I think it would be worth it to have community members ...

Python 2.x is still being used by about a quarter of Python programmers, almost ten years after the first usable Python 3.x came out. I'm not sure when or if it will become a priority for the Golly Gang to make the jump to 3.x.
Python 2.7 support will cease before 2020 as specified in PEP 0373 ...

How do you set up a seed for a given search?

A few questions about bounded-grid enumeration:
Has anyone attempted searches on grids other than unshifted tori? I'd imagine that there might be a similar amount of patterns on shifted tori and klein bottles.

Have FPGAs been considered for this type of search? You could easily do one generation ...