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Would it be possible to give a reasonably detailed summary/outline (aimed towards beginners) of what kinds of searches are feasible with current software tools, as a function of available computing resources and willingness to wait for the result? This is getting a little beyond "basic" questions. ...

#C A diagonal c/4 period 76 sideways rake. ... Thanks! I thought it must be possible, and now we've already justified the existence of this new and absurdly large puffer engine. The c/4 diagonal status table was starting to get a bit too green, which belies the fact that we don't know much above th...

I got something like the second solved but it's not clear if it will actually be useful as the branches on that back (east) side are pretty big and possibly in the way. Wow, that's some crazy branching! However, I think it will be useful. The following high-period chaotic puffer seems to have a bas...

I want to get back to this soon. I've just been busy. This post is an attempt to make a commitment to finalizing the list. I'll delete this post later when I actually get something done.

I have fixed the issue with the Tumbling T-tetsons; it is now in the p8 section. I have also moved a few more oscillators around since they were mis-categorized. Thanks, but now the rule says "OtherLifeHistory", which gives a LifeViewer error. While I could duplicate Karel's p15 into the "delayed d...

here is my current stamp collection of p3-16 sparkers, sorted by period and spark type. (Some sparkers that give off multiple sparks appear multiple times in this collection) Great work! Three issues that I see: The last sparker in the p7 delayed domino row is actually p8. Karel's p15 can also act ...

I am curious what holds it up. The greatest historical impediment to LLSSS search effectiveness has been memory limits but it's gotten a lot better with the one-bit-at-a-time changes and these days I am doing most of my human-guided solving with searches limited to 8 GB (I have other, longer, less-...

Alternate back edges to the recent c/4 diagonal puffer engine with slightly different sparks could give variant puffer engines that behave differently. Here are two related partial results, the first probably being easier to solve, but the second giving a more resilient engine: x = 168, y = 29, rule...

Just a few minutes later one of the other searches dropped this: #C [[ TRACK -1/4 -1/4 ]] x = 74, y = 102, rule = B3/S23 28b2o$28bobo$28bo$31bo$31b2o$31b2o$30b2o$26b2ob2o$26bo4bo$26bob4o$30b 2o$31bo$30b2o$26b4obo2bo$25b2obobobo$27bo4b3o27b2o$50b3o9bobo$32bo17bo 2b3o6bo9bo$7b3o41bobo16b2obo$7bo22b2o...

I guess it just seems rather hemmed in, stuck searching upward, and subjectively the rate at which search results were lengthening with widening windows seemed poor. Alas it's crummy subjective metrics all the way down. I feel like it wouldn't be too hard to move that center branch out of the way o...

I don't think this is useful, but the smoke can reflect a glider (of course, the glider would need to be placed there very precisely): x = 74, y = 102, rule = B3/S23 28b2o$28bobo$28bo$31bo$31b2o$31b2o$30b2o$26b2ob2o$26bo4bo$26bob4o$30b 2o$31bo$30b2o$26b4obo2bo$25b2obobobo$27bo4b3o27b2o$50b3o9bobo$3...

That sparker with that clearance is quite demanding. Some preliminary searches (8 GB) do find longish partials but they don't look very nice to me (mostly wide and mostly getting wider as they go), e.g.: x = 74, y = 53, rule = B3/S23 28b2o$27b2o$29bo$31b2o$30bo2$29bo2bo$26b2obo$25b2o4bo$27bobo2bo$3...

Here's an idea for a p12 c/4 diagonal backrake that might be possible, but it would require the discovery of multiple, likely difficult components: x = 265, y = 57, rule = B3/S23 28b2o68b2o68b2o68b2o$27b2o68b2o68b2o68b2o$29bo69bo69bo69bo$31b2o68b2o 68b2o68b2o$30bo69bo69bo69bo2$29bo2bo66bo2bo66bo2bo...

Here's some detail on how I found the recent puffer engine, for those who are curious. The partial result posted here was found with JLS . I first tried to find a puffer that emits a 4-line (beehive predecessor). Nothing I tried was working. I then remembered how a pre-TL can sometimes interact with...

Here's an idea for a p12 ( Edit: originally I incorrectly claimed it was p16) c/4 diagonal backrake that might be possible, but it would require the discovery of multiple, likely difficult components: x = 265, y = 57, rule = B3/S23 28b2o68b2o68b2o68b2o$27b2o68b2o68b2o68b2o$29bo69bo69bo69bo$31b2o68b2...

Here is a diagonal c/4 period 52 rake Wonderful! When I first found the engine, I was excited to see that it seemed to have a base period of 52 and was hopeful that such a rake could be constructed. It turned out more difficult than I anticipated. I took the liberty of compacting the components of ...

For the same reason that Antonin believes they should be posted in a separate thread. I didn't, and still don't, understand those reasons. I would probably need it explained in a different way. Right now I don't see how the c/4 diagonal posts negatively impacts the posting of other content. Also, i...

Here is a pretty dirty diagonal c/4 period 52 based puffer, at least near the engine. I haven't looked at taming the exhaust. Big glider can provide a functionally equivalent spark while giving a bit more room for sparkers at the back: x = 80, y = 62, rule = B3/S23 27b3o$27bo$28bo$30b2o$31bo2$28bo$...

I also believe that the c/4d technology should be moved to another thread, but refused to say it on the forums until someone else posted about it. The c/4d technology posts currently in the Spaceship Discussion thread should be kept there, but the new ones should go in a new thread Can you give mor...

The one front branch is easy, even with okayish clearance... And the second branch wasn't that bad either. As pictured the smoke does destroy the engine so I guess it's time to play spark guess and check... One solution Excellent! This is only the third c/4 diagonal puffer engine (after the p28 eng...

Well usually we see a variety of speeds being posted, like c/2o, c/3o, 2c/5o, c/5d etc., but now it's just one speed, and that's c/4d. I don't see how the c/4 diagonal discussion would prevent other speeds from being posted. This thread is usually fairly inactive until some new result spawns a flur...

Antonin Duda wrote: ↑

March 16th, 2024, 8:36 am

I think it should.

Can you give more details on why? I'm still not convinced there is a problem with the current situation. I'd also be interested to hear from anyone else.

By the way, when this is resolved I'll move all this meta-discussion somewhere else.

Guys, shouldn"t all of this c/4 diagonal technology be moved to a separate thread? Is that something people want? I don't personally see the problem with the current situation. The spaceship discussion thread doesn't seem to be getting much use otherwise at the moment, so the c/4 diagonal content d...

Amling, when you get a chance, could you try to complete this potential c/4 diagonal puffer engine (shown here at 4-generation intervals): x = 556, y = 44, rule = B3/S23 9bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo37bobo37bob o37bobo37bobo$7b3o37b3o37b3o37b3o37b3o37b3o37b3o37b3o37b3o3...

A p20 c/4d spaceship might be possible by modifying the p28 puffer. Here is a way that a spark could theoretically be provided at c/4d that would result in a p20 spaceship: Is there some trick to finding these things? Is it just guess and check by simulating in golly, sparking by hand? Yes, guess a...