## Search found 2338 matches

January 13th, 2021, 9:10 am
Forum: Patterns
Replies: 1470
Views: 662048

Longest c/8 diagonal partial so far: x = 41, y = 40, rule = B3/S23 4bo\$2b2o\$bobobo\$3obo\$o\$b6o2bo\$2b2o6bo\$5bo3bo\$6b3o\$13b2obo\$6bo5bo3bo\$6b 2o3bo4bo\$11bo3bo2b2o\$8b2obo3bo3bo\$8b2o5b4o\$8b2obo\$10b2ob3o\$22b2o\$12b2o 3b6obo\$11bo6bobo3bo\$11b3o3bo4bo\$13bo4bo3b2o2\$17b2o5bo\$17b2o4b2o3b2o\$ 22b2obobobo\$23b3o2b3o...
January 11th, 2021, 11:15 am
Forum: General Discussion
Replies: 386
Views: 141831

creeperman7002 wrote:
January 11th, 2021, 10:32 am
Still lives, even large and rare ones (!) are discarded in G1 soups. Large and rare still lives should be added to the census.
How would you efficiently determine whether the ash of a soup contains a large/rare still-life?
January 10th, 2021, 10:28 am
Forum: Patterns
Topic: 20-bit still life syntheses
Replies: 41
Views: 4714

### Re: 20-bit still life syntheses

Transfer search resolved 130 unsynthed strict xs20, with 534 remaining (new syntheses submitted to catagolue, at time of posting haven't been processed yet)... That's a smaller number than I expected. Here are the 130 apgcodes for unsynthed xs20s in a code block (same as the attachment, just easier...
January 8th, 2021, 1:06 pm
Forum: General Discussion
Replies: 2344
Views: 670241

### Re: Thread for basic questions

Using 3 gliders in the rectifier loop, we can get 8n+6 for n≥19 (lowest period is the disappointingly high 158): x = 101, y = 79, rule = B3/S23 8bo\$7bobo\$8bo2\$6b5o\$5bo4bo20b2o\$4bo2bo23bo\$bo2bob2o21bobo\$obobo5bo18b 2o\$bo2bo4bobo7bo3bobo\$4b2o2bo2bo5bo2b2obobo\$9b2o9bo3bo\$16bo23b2o\$16bo 2bo20bo\$15bo2b2...
January 6th, 2021, 11:56 pm
Forum: General Discussion
Replies: 2344
Views: 670241

### Re: Thread for basic questions

For periods of the form 8n+4, all p >= 92 are all possible. In particular, the following family gives you 148 and above (it just misses 140, because the p140 oscillator has minpop 141): x = 35, y = 35, rule = B3/S23 19b2o\$10bo9bo7bo\$10b3o7bobo3b3o\$13bo7b2o2bo\$12b2o12bo\$24b2o\$b2o14bo6bo \$2bo13bobo\$2b...
December 30th, 2020, 8:16 am
Forum: General Discussion
Topic: Catagolue Oddities
Replies: 642
Views: 236108

### Re: Catagolue Oddities

Apparently two isolated dots make up an xp3410. Bizarre. The actual apgcode is xp3410_l (lowercase 'L'). It looks like all of the invalid 1yr1 objects came from hauls with apgsearch v4.972, and the ones from apgsearch v4.98 contain no such problems: https://catagolue.hatsya.com/haul/b2-ae3aeiq4jnw5...
December 30th, 2020, 7:59 am
Forum: General Discussion
Replies: 386
Views: 141831

Is there any way to determine when and by whom the soups for the various period-8 c/2 ships here and p16 c/2 ships here were uploaded? I can't seem to get the attributes. Yes: go to the object page, then replace 'object' with 'attribute', then append '/ikpx2_stdin' to the URL: https://catagolue.hat...
December 29th, 2020, 6:24 pm
Forum: Patterns
Topic: Spaceship Eaters
Replies: 261
Views: 49136

### Re: Spaceship Eaters

313P7H3V0 eater partial... Completed fairly awkward but workable Anura eater / converter from Discord discussion, repeat time 1156: Bounding box and population reduction by eliminating a Snark and internal eater: x = 769, y = 135, rule = LifeHistory 88.A\$88.3A\$91.A22.A\$90.2A20.3A\$111.A\$111.2A2\$81.A...
December 28th, 2020, 5:53 pm
Forum: General Discussion
Topic: Catagolue Oddities
Replies: 642
Views: 236108

### Re: Catagolue Oddities

The only objective function tracked by Catagolue is 'minimise the number of gliders'. Beyond that, it's completely arbitrary as to which synthesis ends up on the object page.
December 25th, 2020, 9:00 pm
Forum: Patterns
Replies: 2144
Views: 1060961

c/98o is clearly fast enough. What are you referring to? Probably this: x = 16, y = 31, rule = B36/S23 o2bob4o5bo\$3obob2o3b3obo\$o6b3o5bo\$bo2b5o2b3o\$obo3b2ob7o\$4bo3b6obo\$o2b 2o3bo2b5o\$3bo2b3obo3bo\$2obo2bo3b3o2bo\$3b2o2bobobo3bo\$bobo4bob6o\$2o2bo 3bobo3b2o\$2o6bob6o\$3bo2b2o3b3obo\$2bob3ob2o3bo\$2bo2b3obo2...
December 20th, 2020, 12:58 pm
Forum: Patterns
Replies: 110
Views: 86114

### Re: Still Life Synthesis Thread

Edit: Here's the rest of the cleanup. x = 140, y = 72, rule = B3/S23 54bobo\$54b2o\$55bo7\$62bo\$60b2o\$61b2o4\$138bo\$137bo\$137b3o12\$23b2o101bo\$ 22bo2bo4bo94bobo\$14bobo6bobo4bo93bo2bo\$15b2o7bo5bo94b2o\$o14bo\$b2o23b3o 3b3o\$2o131bo\$30bo90bo10bobo\$30bo90bo7b2o2bo\$30bo90bo5b3ob2o\$126bo\$127b 3ob2o\$129bob2o3\$20...
December 19th, 2020, 12:38 pm
Forum: Bugs & Errors
Topic: LifeViewer erroneously killing gliders
Replies: 15
Views: 709

### Re: LifeViewer erroneously killing gliders

Another minor question: does KILLGLIDERS work on other rules where gliders exist, but where the diagonal speed limit is greater than c/4 and/or the orthogonal speed limit is greater than c/2? Are there any such rules? According to Catagolue , the maxrule for the glider is B2ikn34-r5-n678/S0234-k567...
December 19th, 2020, 11:28 am
Forum: Bugs & Errors
Topic: LifeViewer erroneously killing gliders
Replies: 15
Views: 709

### Re: LifeViewer erroneously killing gliders

Is that a deliberate rough approximation for efficiency reasons? To some extent yes. But the actual question is how do I know when it's safe to delete a glider? If there's a sufficiently wide (6 hd is definitely sufficient) diagonal strip* between the glider and the rest of the pattern, we can remo...
December 18th, 2020, 2:58 pm
Forum: General Discussion
Topic: apgsearch v5.0
Replies: 107
Views: 43599

### Re: apgsearch v5.0

I'm going to look at creating some 'unit tests' for apgsearch: soups that test the correctness of the software in the presence of obscure edge cases. Here's one such case: an emitted NE glider collides into an eastward LWSS: https://catagolue.hatsya.com/hashsoup/G1/k_MVpSDDui2zMe3898947777/b3s23 The...
December 16th, 2020, 5:34 am
Forum: Patterns
Replies: 224
Views: 91402

For some reason I thought my original central branch didn't work, but apparently it does... Nice! That might make it possible to change the orientation and save a few rows by building some kind of custom p84 gun where the red question mark is -- but only if a p7 sparker can be found that can be wel...
December 15th, 2020, 7:22 pm
Forum: Patterns
Replies: 224
Views: 91402

Here's a bounding box reduction to 247×209: 237 by 213 [EDIT: 236-by-213, using a p12 on the left] , including a bunch of fun tricks: A pi orbital (thanks, wwei23) which emits two useful Herschels, where the timings eventually worked out (after trying a metric ton of H-to-G converters) such that no...
December 14th, 2020, 8:14 am
Forum: General Discussion
Replies: 386
Views: 141831

There's currently a bug in which all of Google seems to be broken if you're logged in, which affects Catagolue as well.

You can avoid this by opening Catagolue in an 'Incognito tab' in Chrome or a 'private window' in Firefox.
December 13th, 2020, 8:48 pm
Forum: Patterns
Topic: is this 23c/69 pre-Herschel climber known?
Replies: 6
Views: 295

### Re: is this 23c/69 pre-Herschel climber known?

is this a new climber, or has it been discovered already? It was discovered by Nicolay Beluchenko in 2006: #C 23c/69 fuse, tamed with use of c/3 technology x = 70, y = 261, rule = S23/B3 27boo\$27boo22\$27boo\$27boo22\$27boo\$27boo22\$27boo\$27boo22\$27boo\$27boo22\$ 27boo\$27boo22\$27boo\$27boo10\$22bo\$21b3o\$20...
December 13th, 2020, 6:57 pm
Forum: Patterns
Replies: 224
Views: 91402

Here's a completion of the central branch of the p7 Here's a completion of another branch, although it doesn't leave as much room as I'd like for the third and, I suspect, hardest branch. Well done! When completed, we'll (most likely) get a more compact p14 gun: x = 248, y = 209, rule = LifeHistory...
December 8th, 2020, 4:51 pm
Forum: Patterns
Topic: Spaceship Eaters
Replies: 261
Views: 49136

### Re: Spaceship Eaters

Repeat time 633: Repeat time 590 (and very Spartan as well!) by using the old 487-tick reflector: x = 178, y = 256, rule = LifeHistory 21.2A23.4B\$22.A22.4B\$22.A.AB18.4B\$23.2AB.2A14.4B19.A\$25.2B2AB12.4B.3B .B12.3A\$25.4B6.18B10.A\$25.6B3.16B2A2B5.B3.2A14.2A\$26.6B2.16B2A2B3.8B 13.B2AB\$26.7B.20B.8B16.2B...
December 8th, 2020, 1:06 pm
Forum: Patterns
Replies: 2983
Views: 1171306

interesting but useless pattern i found while messing with Gosper glider guns: I think that's Bill Gosper's 'five and dime' reaction from aeons ago. It tends to get rediscovered every so often, as evidenced by this recent (2009) discussion of the reaction: I showed two young brothers Golly and the ...
November 28th, 2020, 3:36 pm
Forum: Patterns
Replies: 1624
Views: 713838

And why not buckaroos? That reduces the bounding box to 114-by-114: x = 114, y = 114, rule = B3/S23 20bo44b2o\$20b3o42b2o\$23bo\$22b2o\$62b2o\$62b2o2\$31bo33b2o\$11b2o5b2o9b2obo 32b2o\$11b2o5b2o8bo4bo39b2o\$32bo40bo\$15b2o11b4o39bobo30b2o\$15b2o54b2o 31b2o\$55bo\$54bobo\$53b2ob2o\$38b2o14bo2bo39bo\$38b2o14bo3bo37b...
November 23rd, 2020, 10:18 am
Forum: Patterns
Replies: 1470
Views: 662048

The left corner can be completed using halfmax: So can the bottom, so it's only the top part that's remaining: x = 195, y = 353, rule = B3/S23 140bo7b2o\$140bobo6bo\$140bob2o5b2o\$140bobobo\$140bobob2o\$140bobo3bo\$140b o\$140bob2ob2o\$140bo\$140bo2bo3b3o\$140bobo6bo\$140bob2o\$131bo4b2o2bobo6b 2o\$130bob3o3bob...
November 21st, 2020, 10:44 pm
Forum: Patterns
Topic: Binary slow salvos
Replies: 117
Views: 13443

### Re: 16-glider universal construction

How can making the two glider lanes be from different directions instead of from the same direction make the search tree both harder to search and finite? I would think that the search tree would expand at a greater rate due to the removal of the Fibonacci restriction. It's not the different-direct...
November 20th, 2020, 6:18 am
Forum: Patterns