ConwayLife.com

Using the "@#" command does not allow the use of further specifications, because it's 2 characters long and the additional specifications assume a 1-character-long command. For example, "@#1,0c2" doesn't work. It's not a big deal at the moment, since the only known ships in these rules are p2 photon...

Here is a c/9 orthogonal ship in B3457/S56 (found with qfind over about 12 days): x = 16, y = 36, rule = B3457/S56 5b6o2$3b2o2b2o2b2o$5b2o2b2o$b2ob8ob2o$4b2ob2ob2o$b2obo6bob2o$5bob2obo$ 4o3b2o3b4o$5b6o$ob3o6b3obo$b2o2bo4bo2b2o$o2b2o6b2o2bo$b3ob6ob3o$o3bo6b o3bo$bobob2o2b2obobo$o14bo$b2o3bo2bo3b2o$o2...

I'm going to continue tolerating this thread for now. Rules 3, 4, and 5 are not strictly enforced in the sandbox, but rules 1 and 2 are enforced everywhere. Please, everyone, be respectful and avoid saying things that could be considered rude or insulting, even if they are jokes.

This command should have halted when a spaceship was found, but it did not: ./rlife llsss-recentering-wao --rule B245/S34 c2-f2b 3.in 00 --wao-left-pad 00 --wao-right-pad 00 --wao-idx ALL --ends zero 16 I think you will need to modify src/llsss/recentering.rs. Directly after line 409 (which reads "...

I believe I have proven (using LLSSS) that there are no period-2 c/2 orthogonal spaceships in Life-like rules with B23 and without B0. The details of this search are here . I tried 2c/4, but quickly got bogged down with partials very early on in the search. I only managed to disprove 2c/4o ships in ...

I completed the search and seem to have proven that there are no period-2 c/2 orthogonal ships in Life-like rules with B23 and without B0. I was thinking some more about this and projects like this and thought I should mention LLSSS_MAX_TABLE_SIZE. If you're going to run rules with low time limits (...

Very cool! By the way, I tried compiling with g++, but got the error ulti_period_photon_searcherv0.1.cpp:235:32: error: call to non-‘constexpr’ function... This seems to be caused by using the non-constant variable birth_survival in a constexpr function. It compiled after I removed "constexpr" from ...

Perhaps you already know and have left it unsaid, but I think most searches, even exhaustion searches like this, will run better f2b. Consider something like 2c/3 in S23/B3. Run b2f there are endless, endless partials but of course they can never complete. I think even 2c/3 s2s will have endless pa...

I would like to use LLSSS to try to determine if any B23 rules support period-2 c/2 orthogonal ships. To disprove that a rule has such ships, would the following inputs be valid? | ZZZ | ZZZ | | ... | ... | | ... | ... | | ... | ... | ./rlife llsss-recentering-wao c2-s2s c2-s2s.in --wao-left-pad 00 ...

I found an interesting family of high period photons in B24/S27 Very cool! How did you find them? What program did you use? There aren't many programs that can handle high-period photons. Is there a policy for inclusion of spaceships of the same speed but different periods in the database? Some pie...

Not counting 31P8H4V0 , are there other non-p4 spaceships evolving identically in B36/S238 and in B3/S23? Here's a hastily put together collection of ships with periods 2, 3, and 4 that work in both rules: x = 413, y = 125, rule = B36/S238 116b3o$115bo2b5o$114bo3bobob2o$114bo6b4o$74bo41bo7b2o56b3o2...

it's running, although the you described wasn't actually what happed Can you give more details? What happened or didn't happen? Can you copy and paste the program output here? When I ran the above search, this is what I got: qfind v2.3 by Matthias Merzenich, 19 March 2023 Input: ./qfind -r B3/S23 -...

it doesn't open upon me pressing the open button I can see it flash before it closes I think the following instructions will work on Windows 10/11 when using the downloaded executable: In the file explorer, navigate to the folder containing qfind. Hold down the shift key and right click on the fold...

The following command prints many duplicate copies of the same spaceship in the same phase and in the same orientation: At the moment, qfind only avoids printing a pattern twice in a row. With an asymmetric search it finds one orientation, then the other, so now it has printed two "different" ships...

For some reason the c/5o in B345678/S028 is just a combination of three non-interacting c/5o spaceships. Thanks for bringing this back up. It's been pointed out before , and I could have sworn I pointed this out to David Eppstein over a decade ago. It's the third-to-last entry in the old database ....

"c.patch" and "openmp_define.patch" Thanks! These are now successfully merged. I'm especially grateful for the conversion (backporting was the wrong word, sorry) back to c. Of course, the code should now be compiled with a c compiler, rather than a c++ compiler. I edited the readme to reflect this....

I've made some more changes to the source code , notably overhauling the option parsing. Importantly, I replaced the -p (period) and -y (translation) options with a -v (velocity) option. Velocity should be input in the form <translation>c/<period>. I've also changed the meaning of the -a option and ...

p126 gun with a similar mechanism, nowhere close to beating the existing gun_126 This one can be reduced with the small p9 domino and the classic ship half-TL eater, although it's still nowhere close to the record: x = 72, y = 27, rule = B3/S23 16b2o7bo6b3o$16b2o5b3o8bo6b2o$22bo10bo7b2o$9b2o11b2o$1...

I'm currently reviewing your latest commits to my fork and am running some benchmark tests. I also have some quality-of-life improvements, like adding a Makefile and wrapping all thread/openmp dependent code to be placed behind #ifdef _OPENMP (which is set by the '-fopenmp' option) to allow for com...

I'm working on an update to qfind. I already fixed a few bugs in the source code ; nothing that affects the validity of the results, but the could have caused some unexpected crashes or searching with invalid rules like Bk/S. I also added two features: A timestamp to get a sense of how the search is...

184-cell unsynthesizable still life: Here are three different self-forcing patches for this still life with 273 specified cells: ... However, their intersection is not self-forcing. I found these by playing around with JLS and removing one cell at a time. If the patch stayed self-forcing, I kept th...

I would like to see this completed, but I don't want to organize it. I've at least created a wiki table for anyone to edit. If you can find the time, please add the generally agreed upon entries.

184-cell unsynthesizable still life: x = 22, y = 25, rule = B3/S23 10b2o$9bo2bo$7bo2bobo$b2o4b2obo2b2o$bo2b2obo2b2obo2b2o$2b3obo2bo2bo2b 2obo$7b2obo2b2o4bo$4b2obo2b2obo2b2obo$2b3obo2bo2bo2b2obo$bo5b2obo2b2o$ 2bob2obo2b2obo2b2o$b2ob2o2bo2bo2bob2o$7b2obo2b2o$b3ob2o2bob2o2bob3o$o 2b2obo2bo2bo2b2obobo$...

With the voting period now concluded, I invite anyone to use the script to tally the votes and post the results.

For WAO an input file like: | ZZZ | ZZZ | ZZZ | ZZZ | | ... | ... | ... | ... | | ... | ... | ... | ... | | ... | ... | ... | ... | Can be run like: rlife llsss-recentering-wao 2c4-s2s --rule 'B2/S' 2c4-wao.in 00 --wao-left-pad 00 --wao-right-pad 00 --wao-idx ALL 10 With these inputs it returns the...