Thread for basic questions

[dvgrn]

I am looking for information on other rules besides B3/S23, and what B3/S23 even means. I know that the numbers represent the birth/death values for cells, but I am looking for more info. I’ve also noticed that in some of the RLE files in posts have rules that are words or phrases. What is that all about?
Help is greatly appreciated.

Try starting with the LifeWiki articles about rules -- e.g.,

Life-like rule

Isotropic non-totalistic rule

Larger than Life

-- and maybe also the Golly Help file about the types of rule formats that Golly can read.

The words or phrases that you mentioned are usually going to be either aliases for specific Life-like or isotropic or Larger-than-Life rules, or they'll be custom-defined "RuleLoader" rules. Sometimes RuleLoader rules use different neighborhoods than the usual eight neighbors, and/or they'll often use more than just two cell states.

You can look up a rule on the LifeWiki in the OCA namespace -- e.g., OCA:Amoeba -- or find the actual rule definition for a RuleLoader rule by looking in the Rule namespace -- e.g., Rule:ZombifiedLife.

[b-engine]

(It may not be appropriate, but I don't think there're other places that I can post it)

In theory RCT can construct anything, including itself (may displace), so spaceships based on RCT is possible. But is there any explicit construction? If yes, please provide a MacroCell file.

[dvgrn]

(It may not be appropriate, but I don't think there're other places that I can post it)

In theory RCT can construct anything, including itself (may displace), so spaceships based on RCT is possible. But is there any explicit construction? If yes, please provide a MacroCell file.

No, there is no explicit construction for a spaceship or oscillator or sawtooth RCT. All of these are doable, but they would need a little bit more work than the currently completed examples -- because they require building seeds for gliders at the faraway corners of an RCT pattern, and then probably coordinating the activation of those seeds from the epicentre.

It's not a lot of work, compared to all the other explicitly solved parts of current RCT paterns, but it's work that hasn't been done yet.

A macrocell file of any of these would be on the same order of size as the macrocell file Pavgran generated for the full RCT16 pattern -- somewhere around 30 megabytes, so big enough to be a little awkward, but not impossible to work with.

[confocaloid]

(It may not be appropriate, but I don't think there're other places that I can post it)

In theory RCT can construct anything, including itself (may displace), so spaceships based on RCT is possible. But is there any explicit construction? If yes, please provide a MacroCell file.

[...] A macrocell file of any of these would be on the same order of size as the macrocell file Pavgran generated for the full RCT16 pattern -- somewhere around 30 megabytes, so big enough to be a little awkward, but not impossible to work with.

To make it available to everyone interested, regardless of having access to Discord, below is what seems to be the relevant part of the conversation, extracted from the converted archive of messages.

Warning: Golly 4.2 crashed when I attempted to open the linked 30-megabyte mc.gz file.

---
id: 1040361816318017606
author: [290253606630719498, 'pavgran']
time: Thu Nov 10 20:26:25 2022 UTC
content:
Ultimately, it should build exactly the same thing as the posted semilator pattern. That is, Alan Hensel's decimal counter
---
id: 1040361764069584906
author: [358573105305747466, 'dvgrn']
time: Thu Nov 10 20:26:13 2022 UTC
reactions: [['<:cursed:715138245565874206>', 5]]
content:
Heh, run it and find out!
---
id: 1040361539934371951
author: [711138971756920833, 'Gustone']
time: Thu Nov 10 20:25:20 2022 UTC
reference: https://discord.com/channels/3579222555 ... 5987764274
content:
what does it build
---
id: 1040361325672538132
author: [358573105305747466, 'dvgrn']
time: Thu Nov 10 20:24:29 2022 UTC
content:
Interesting -- that matches what I thought I was seeing, but I don't have anything but rather vague theories as to why that would be. Is that mostly in the initial stages -- say, when the viewer is repeatedly zooming in and slowing down to get to the initial collisions between glider streams at the epicentre?
---
id: 1040360785920135178
author: [769291979916967956, 'lumigd']
time: Thu Nov 10 20:22:20 2022 UTC
content:
2^10 runs at a lower fps than say 2^27 <@358573105305747466>
---
id: 1040360604906565652
author: [290253606630719498, 'pavgran']
time: Thu Nov 10 20:21:37 2022 UTC
edited: 1668111710.708
content:
I believe it should work correctly, although I couldn't test it, obviously. I had to fiddle with my previous direct MC builder for RCT to make glider positions coincide with the semilator script for a few test patterns.
---
id: 1040360241784692818
author: [769291979916967956, 'lumigd']
time: Thu Nov 10 20:20:10 2022 UTC
content:
oooo
---
id: 1040360025987764274
author: [290253606630719498, 'pavgran']
time: Thu Nov 10 20:19:19 2022 UTC
embeds:
content:
Full RCT16 pattern:
https://mega.nz/file/0N4iABpQ#olbbY1DuJ ... toSkJmqtsE
---

[dvgrn]

Warning: Golly 4.2 crashed when I attempted to open the linked 30-megabyte mc.gz file.

The same thing happened to me on my new laptop. I tried bumping up the memory usage in Golly from 6MB to 20MB, but not surprisingly that didn't make any difference -- Golly still crashed and exited.

I also tried bumping up Golly's stack size, as Tom Rokicki described and dani tried out here:

Code: Select all

editbin /stack:8000000 Golly.exe

I do seem to remember getting some "full" RCT pattern to run for a while in Golly, but I suspect that was the shillelagh demo pattern -- much much much smaller in size.

I don't remember offhand whether there are any changes waiting around in the upcoming Golly 4.3 beta, that might make a difference to Golly's initial behavior. However, something calcyman said at one point on Discord may be relevant here:

I don't fully understand why people are trying to run this in Golly -- it's absolutely impossible to run it to completion given that the peak memory usage would be many terabytes, and probably larger than Linux's 46-bit userspace virtual address space.

[Haycat2009]

How can just 15 gliders crash Golly? And what about Lifeviewer?

[dvgrn]

How can just 15 gliders crash Golly? And what about Lifeviewer?

It's fifteen gliders, but they're placed far enough apart from each other that the distance between them is bigger than the number of atoms in the visible universe.

That's not even a half-decent comparison -- there are "only" 10^80-ish atoms in the visible universe.

We need a point of comparison for a distance that's somewhere up in the 10^500000 range, and it's hard to find one.

It's very hard for Golly to do simulations of distances like that without running out of stack space. HashLife wasn't designed to work with anywhere near that many levels of hashtiles.

LifeViewer's algorithm, as currently implemented, works up to a 16,384x16,384 grid if I remember right, so it is considerably less relevant to a full RCT pattern than Golly's HashLife is.

[Haycat2009]

Are v sparklers pipsquirters, and are there any known pipsquirters with more than 1 row of clearance?

[azulavoir]

Could a life "algorithm" be made that can run RCTs effectively? Perhaps it would have some way to represent a glider-producing switch engine in an extremely tiny amount of information relative to their size - and might keep track of glider movement by tracking just the front cell. And maybe it could be optimized for the actual caber tossing part of the gliders bouncing back and forth to construct the middle... maybe it would be able to emulate the ECCA/DBCA too? And it would fall back to Hashlife or something equivalent when other interactions start happening.

There's surely a flaw in this idea - where does it lie?

[dvgrn]

Could a life "algorithm" be made that can run RCTs effectively?
... There's surely a flaw in this idea - where does it lie?

Nope, there's no flaw. We could even do a trick like that very nicely with an only moderately complicated Lua script, making use of the Lua overlay inside Golly.

That is to say, we could write something that directly reads and interprets a 150MB+ macrocell file representing a full RCT pattern -- or, much better, an RLE or Life 1.06 version, which would be much smaller:

Compressed Life 1.06 would be very small -- it should be close to 200 kilobytes if done properly:
https://conwaylife.com/wiki/Life_1.06
Effectively all of the 160 coordinates will be the same large number, except with a possible leading minus sign and some differences in the last few digits. The rest of the digits will be identical, therefore easy to deduplicate.

We can predict where all the various pieces of an RCT pattern will be, at any time during its evolution. So, for example, we could run the construction and deconstruction of the DBCA and ECCA and ATBC so on, and take in-memory snapshots every so often. Then, any time the viewport is zoomed in on a region such that the DBCA or ECCA or ATBC or whatever takes up more than one pixel, we can use those in-memory snapshots to figure out exactly what it would look like, and quickly display that.

For the debris trails left by the various GPSE's, it's a similar story: we can easily reconstruct what would be in any given viewpoint location, at any given time in an RCT's evolution. There's not really any point in keeping track of a gazillion copies of mostly identical ash -- it's all super predictable... if it wasn't, the RCT mechanism wouldn't work in the first place.

Now, if you want this RCT simulation to be absolutely accurate, there are some annoying details to sort out, having to do with excess gliders getting harmlessly absorbed here and there along the NW and SE GPSE ash trails, making very slight changes to those ash trails at ridiculously wide intervals. But even that is perfectly possible to track accurately, though maybe it's hard to justify in terms of the benefit you get from the extra code complexity.

[Haycat2009]

What is the highest clearance fountain (Dot and domino, one each) variant known?

[Tawal]

I think this kind of thread can be useful to the forum.
Especially for the newcomers, beginners ...
Also useful to avoid to polluting the forum and the threads with one question, one answer.
This thread's title is open to suggestions.

There's many questions I hadn't posted for the reasons above.
So let's go

My 1rst question :
About synchronisation of Gliders with Snarks, when I need a decay of 1hd how can I do ?
Is there a reflector which has this output lane relatively to the input :

Code: Select all

x = 99, y = 43, rule = LifeHistory
11$26.4B11.4B21.4B12.4B$27.4B9.4B23.4B10.4B$28.4B7.4B25.4B8.4B$29.4B
5.4B27.4B6.4B$30.4B3.4B29.4B4.4B$31.4B.4B31.4B2.4B$32.7B33.8B$33.5B
35.6B3$17.5D2.2D3.D3.4D4.4D3.D23.4D$16.D7.2D3.D2.D4.D2.D4.D2.D22.D4.D
$16.D7.D.D2.D2.D4.D2.D4.D2.D3.D18.D4.D$16.D7.D2.D.D2.D4.D2.D4.D2.D2.D
24.D$16.D7.D2.D.D2.D4.D2.D4.D2.D.D25.D$17.4D3.D3.2D2.D4.D2.5D3.2D25.D
$21.D2.D3.2D2.6D2.D.D5.D.D23.D$21.D2.D4.D2.D4.D2.D2.D4.D2.D21.D$21.D
2.D4.D2.D4.D2.D3.D3.D3.D20.D$21.D2.D4.D2.D4.D2.D4.D2.D4.D19.D$16.5D3.
D4.D2.D4.D2.D4.D2.D4.D$73.D!

[dvgrn]

About synchronisation of Gliders with Snarks, when I need a decay of 1hd how can I do ?
Is there a reflector which has this output lane relatively to the input...?

This looks like a good question for the Basic Questions thread, so I've moved it here.

Yes, many such reflectors exist -- just nothing as small or fast as a Snark. "Decay" is usually used for something else; for an offset of 1hd, the standard terms go like this:

the Snark is a colour-preserving reflector, and

this recently-discovered G-to-G is a colour-changing reflector.

Technically a combination of a Bandersnatch and a Snark is slightly smaller than the above G-to-G. There are other recently-discovered color-changing reflectors with a repeat time faster than the Bandersnatch, if that happens to be more important than the size.

[Tawal]

If I'd found this thread I'd have posted here, but I didn't.
Yet I've searched 3 to 4 pages = 75 to 100 threads !
Yesterday a message was posted in this thread and it doesn't up for me.

Edit:
Ok were are in another section

[NimbleRogue]

Is there a way to sort rules in Catagolue by number of ships in them?

[confocaloid]

Is there a way to sort rules in Catagolue by number of ships in them?

I wonder how exactly such a feature could be implemented. How to distinguish those cases when two objects are essentially the same spaceship, from those cases when two objects are different mechanisms?

• Some rules have many relatively "boring" variations of the same spaceship, which get different apgcodes. So simply counting apgcodes beginning with "xq" probably would not be satisfactory.
• Some rules have commonly occurring adjustable spaceships, which have different periods (differing prefixes of the apgcode) but are still variations of the same object. At the same time, there are cases when different unrelated mechanisms have the same period. So looking just at the apgcode prefix would not be satisfactory either.

many_spaceship_periods.txt

2878 rulestrings

(83.7 KiB) Downloaded 28 times

Attached is an incomplete file, containing a subset of rules on Catagolue, along with periods of a subset of occurring spaceships. Each line contains parts separated by spaces. The first part in the line is the rulestring; the rest are periods of spaceships.
The first several lines:

Code: Select all

b2e3aij4ar5-cery6acn78s1c2ace3eknqr4acekw5-akr6-ci78 302 298 278 274 256 244 238 236 234 230 228 226 224 222 220 218 216 214 212 210 208 206 204 202 200 198 196 194 192 190 188 186 184 182 180 178 176 174 172 170 168 166 164 162 160 158 156 154 152 150 148 146 144 142 140 138 136 134 132 130 128 126 124 122 120 118 116 114 112 110 108 106 104 102 100 98 96 94 92 90 88 86 84 82 80 78 76 74 72 70 68 66 64 62 60 58 56 54 52 50 48 46 44 42 40 38 36 34 32 3
r3b8t9s15t24 92 85 83 82 80 77 70 68 64 63 55 54 50 49 45 42 40 39 36 33 31 30 28 27 25 23 22 21 20 18 16 15 12 10 9 8 7 6 5 4 3 2 1
b2cek3aj4aiktwy5ciy6acn8s2ck3ain4-ikr5aikry678 105 101 99 89 87 83 81 79 77 75 73 71 69 67 65 63 61 59 57 55 53 51 49 47 45 43 41 39 37 36 35 33 31 29 27 25 23 21 19 17
r5b34t45s34t58 1650 660 165 70 60 50 42 40 25 21 16 14 13 12 10 8 6 5 4 3 2 1
b34t6as2-ei3-ai4aeijr5einqy6i 1380 460 432 417 402 374 302 288 259 230 216 187 144 115 86 72 18 16 10 6 4 2
b3s23-ain4-ae6 216 134 122 114 104 70 68 62 56 46 34 30 18 14 12 10 8 6 4 2
b2ek3ij4ry5es012cei3ijqr4ar5aeky6i 88 84 80 76 72 68 64 60 56 52 48 44 40 36 32 28 24 20 16 2
b2en3ij4ae5e7e8s1c2cek3-a4aciqw5eky6e7c 615 110 56 40 36 32 30 24 22 20 18 17 16 14 12 8 6 4 2
b3-cknq4kz5rs2-in3-cky4et5ikr6c 192 165 144 120 117 96 63 60 56 48 38 36 24 20 12 8 7 4 2
b3-ckq4ck5ys2-ci3-aek4i6k 608 416 192 190 128 96 80 76 74 72 64 48 44 32 26 16 12 8 4
r5b0000000000000000001ffe00000000s0000000002000001ffffff000003fc 1650 660 165 60 50 42 16 14 13 12 10 8 6 5 4 3 2 1
r5b0000000000000000001ffe00000000s0000000002000001ffffff000000ffz 1650 165 60 50 42 16 14 13 12 10 8 6 5 4 3 2 1
r5b0000000001000000001ffe00000000s0000000000000001ffffff00000000 165 116 60 50 42 16 14 13 12 10 8 6 5 4 3 2 1
b3-knqr4jrts2-in3-acy4iz6c 96 84 72 60 48 40 36 24 22 20 16 14 12 8 6 4 2
r5b0000000000000000001ffe00000000s0000000000000001ffffff0000007fz 165 60 50 42 16 14 13 12 10 8 6 5 4 3 2 1
b2n3aiqr7es2-c3-a4i 234 96 88 72 68 58 56 54 48 44 36 24 18 12 6 4
b2k3aeiry4cjkq5kq6kn8s2-in3-acen4inq5aeir6cik7c8 2574 320 224 192 160 128 117 96 64 32 20 16 12 10 4
r5b0000000000000000001ffe00000000s0000000000000001ffffff0000007f 165 60 50 42 16 14 13 12 10 6 5 4 3 2 1
b3-cq4ckq5jy6is2-ci3-aek4cit6ek 504 384 372 318 252 240 186 174 120 84 54 50 42 20 4
b38s245-i67 648 552 192 58 56 46 24 18 16 12 8 6 4 2
b2k3air4eqz5c6cin7c8s2-ci3-a4cei5-ceiy678 636 474 318 144 96 80 72 48 36 30 24 12 3 2
b3aeijr4kz5c6cn7cs2-i3-ack4einrtyz5ejn6aci7c8 344 312 234 156 136 104 78 48 34 20 8 4 2
b34eqry5ce6ns2aek3-a4inz5r6i 622 534 320 240 120 86 72 60 48 12 8 4 2
b2ci3aery4eqr5aeiq6acn78s01c2ei3-i4ijrtz5ainry7c8 68 56 48 44 40 36 32 28 24 20 16 4 2
b2k3aei5r6ceis2-in3-nqry4-ceknq5iry 120 90 80 60 50 40 30 20 14 10 8 2
b3-e5ns2-cn3-y4i 84 72 56 48 42 28 24 14 12 10 4 2
b3aeinq4ais345eqr6a 282 94 34 30 24 14 12 10 8 6 4 3
b3ai4ekqty5cy6cns2-c3-ace4ainr5enqry6an78 444 324 312 216 162 114 108 24 12 6 4 2
b3-cen8s2-ci3ijnqr4inq 240 156 136 128 80 70 68 60 28 24 20 12
b2e3-ans2-a3-a4-ai 56 50 40 24 20 16 14 12 8 6 4 2
b3-ry4ckn5a6ae7cs2-in3-cjn4ijt5iky6-an7e8 1270 508 431 381 342 327 301 254 198 127 4 2
b2k3aeir4c5q6cks2-in3ijqr4einqt5aceir6ace7e 160 96 64 48 32 30 20 16 12 10 4
r5b0000000000000000001ffe00000000s0000000002000001ffffff000003fe 50 42 16 12 10 6 5 4 3 2 1
r5b0000000000000000001ffe00000000s0000000002000001ffffff000003ff 42 16 13 12 10 6 5 4 3 2 1
r5b0000000000000000001ffe00000000s0000000002000001ffffff000003ffz 42 16 13 12 10 6 5 4 3 2 1
b2k3aeijr4jq5nq6ckn8s2-in3ijqry4einq5ceir6aek 224 112 48 34 32 24 20 16 10 8 4
b3-jknr4cky5ek6eiks23-ay4eiqtyz5acekq6cn7e 171 20 18 14 12 10 9 6 4 3 2
b1ecedeeeg2aas2aa3x6xv2 80 20 18 16 12 8 6 4 3 2 1
b3aeijy4acqt5is2ae3-a45nq6c 80 48 32 24 20 16 12 8 6 4 2
b2k3aijnr4aciny6ns3-cekq4aijnqtw5-aky68 905 444 60 52 46 16 14 12 8 4 3
b3acijy4aekq5cy6ns2-c3-ace4inr5eqy 255 234 170 152 85 78 76 28 14 6 2
b2i34cjq5kny6-n78s3-jkq4aikqrz5cky678 2848 674 468 376 236 166 78 52 24 16 4
b2k3-cjnq4jq5nq6ckn8s2-in3ijqry4einq5ceir6aek 2124 1062 708 80 32 20 16 12 10 4
b2k3aeiry4ct5ckq6c8s2-in3ijkqr4cinq5acikr6cin8 474 224 72 36 20 12 10 8 4 2
b3-y4e6acs23-ae4ci5e 180 140 120 100 80 60 40 20 4 2
r7b62t77s62t105 14 12 11 10 7 6 5 4 2 1
b3-kny4e6ceis2-i3-aer4ainty5e6ce 80 42 30 24 14 10 8 6 4 2
b3-kny4e6eics2-i3-rea4nitya5e6ce 80 42 30 24 14 10 8 6 4 2
b2i3-cen4k5nr6i8s2-i3-ac4iyz6a7c8 358 252 168 126 106 84 42 20 16 4
b3s23-ain4-a 90 64 30 26 20 18 16 10 8 6
b38s23 380 190 16 12 10 8 7 5 4 3
b2e3aijk4jrw5ijn6e8s1c2-i3cijnr4et5ik6ac7c8 240 224 128 112 80 64 48 6 5 2
b2n3-ckny4ceqz5cek6n8s2-in3-a4ciknqyz5eq8 336 208 168 152 112 84 56 52 32 4
b3-ckr5y6aes2-i3-aek4cit5c6cen8 72 53 48 38 24 18 16 12 8 4
b3aeikq4i5ey6is2-ci3-ak4in6c 258 86 43 36 35 24 14 12 6 2
b2e3aij4jq5ys1c2-in3in4n 210 168 126 84 64 42 8 6 4 2
b38s2-ik3-ckn4-akry5airy6-k 704 448 384 320 256 192 128 64 33 4
b2n3aeijy4ei5c6in8s2aek3-acek4ceiknr5ci6ci8 174 168 128 64 58 48 32 20 18 16
b2k3air4eqz5c6cin7c8s2-ci3-a4cei5-ceiy67 144 96 72 60 36 30 24 12 3 2
b2k3air4eqz5c6cin7c8s2-ci3-a4cei5-ceiy67e8 354 318 156 144 36 30 24 12 3 2
[...]

Edit:

Attached is an incomplete file, containing a subset of rules on Catagolue, along with periods of a subset of occurring spaceships. Each line contains parts separated by spaces. The first part in the line is the rulestring; the rest are periods of spaceships.

How did you create this list?

I already had an incomplete set of apgcode/rulestring pairs (collected from an earlier exploration during several month, unfortunately too large to attach here). I just filtered it to keep spaceships only and reformatted in the form "one rulestring per line, list unique periods instead of apgcodes" using a Python script. The result was small enough to attach.

[NimbleRogue]

Attached is an incomplete file, containing a subset of rules on Catagolue, along with periods of a subset of occurring spaceships. Each line contains parts separated by spaces. The first part in the line is the rulestring; the rest are periods of spaceships.

How did you create this list?

[Haycat2009]

Since D8_2 is technically not a symmetry but is sometimes preserved, what rules preserve C4_2 and D4_2 symmetries?

[confocaloid]

historical note:

Two questions
1. Is it possible for anything to gain temporary D8_2 symmetry, before reverting?
2. Are there any known oscillators with D8_2 symmetry where all sectors interact?

[...]
Sweet! Are there any oscillators that toggle back and forth between D8_2 symmetry and D4_2 symmetry?

Since there is a D8_2 symmetry, a C4_2 and D4_x2 symmetry exists too, right? And also, what isotropic transitions must either all exist simultaneously or none should to preserve C4_2 or D4_x2 symmetry?

Since a D8_2 symmetry exists, does C4_2 and D4_x2 symmetry exist? And what birth and survival conditions need to be the same to preserve such symmetries?

Since D8_2 is technically not a symmetry but is sometimes preserved, what rules preserve C4_2 and D4_2 symmetries?

(also, posts surrounding the quoted posts contain various attempts at answers)

[Haycat2009]

Do conduits that use the FNG for cleanup count as dependent?

[confocaloid]

Do conduits that use the FNG for cleanup count as dependent?

If you mean something like HLx86H / Lx86, then no. Such conduits use the first natural glider of the output Herschel for cleanup. However, the FNG of the input Herschel escapes.

Code: Select all

x = 35, y = 42, rule = LifeHistory
D3.D.D12.3D3.3D2.D3.D$D3.D.D11.D3.D.D5.D3.D$D3.D.D5.D3.D.D3.D.D5.D3.D
$5D.D6.D.D3.3D2.4D2.5D$D3.D.D7.D3.D3.D.D3.D.D3.D$D3.D.D6.D.D2.D3.D.D
3.D.D3.D$D3.D.5D.D3.D2.3D3.3D2.D3.D10$16.A11.B$16.3A8.3D$19.A7.BDB$
18.2A6.2B3D$18.5B3.5B$6.2A12.12B$7.A11.13B$7.A.AB8.12B$8.2AB.3B4.12B$
10.22B$10.22B$11.20B$10.21B$8.23B$6.23B.B2A$6.2BC13B2.5B.BA.A$5.3BCBC
4B.7B2.2B6.A$6.2B3C4B2.3B.B4.B6.2A$5.5BC4B4.2B2A3.2A$4.10B4.BA2.A4.A$
4.3B12.3A5.A.A$2.4B22.2A$2.2A15.3A$3.A15.A2.A$3A18.2A$A!

If you mean something like a Rx113 / HRx113H, then no. The input Herschel still produces the first natural glider, therefore the conduit is independent. It's just that the FNG of the input Herschel is necessary for the conduit to work in a repeatable way.

Did anyone already notice that there are now at least two completely different Rx113 conduits?

• Rx113 = HRx65R + RF48H
• Rx113 = HR54B + BFx59H

I think one of these two Rx113 conduits is CC and one is CP. Here are both of them in a 760-tick loop, with four Fx77 in between:

Code: Select all

x = 109, y = 86, rule = LifeHistory
14.2A17.2C27.A35.2C$15.A18.C25.3A35.C$10.A4.A.2A3.2A10.C.CB21.A35.BC.
C$10.3A3.A.A4.A11.2CB21.2A34.B2C$13.A4.A.3A14.3B17.4B32.3B$12.2A.B.2A
.A16.4B15.3B33.4B$12.8B18.4B14.4B18.A12.4B$14.4B8.7B.B4.4B12.5B9.A8.
3A5.B3.4B$13.5B.2B5.13B.4B11.6B8.3A9.A3.8B$12.39B2.8B11.A7.2A3.7B5.B$
12.12B2D21BD14B9.2A3.B3.11B5.3B$11.14B2D18B3D13B10.8B3.8B4.8B$11.13B
2D2B2A15BDBD4B.7B13.16B5.7B2A3B$11.13BD3B2A15BD15B12.16B5.6BA2BA2B$
11.9B4.11B3.2B2.19B11.19B4.5BABA6B$9.B.8B5.10B11.17B8.21B3.7BA7B$7.2A
9B7.6B16.15B.2B2.42B$6.A2BA11B5.3B19.22BC26BD11B$6.B2A13B4.B21.8B.13B
CBC4B.8BA8B3D11B$7.2B.12B3.2A19.8B3.2B2A9B3C4B2.B.4BABA8BD3B2A7B$10.
12B3.A20.2A3.B5.2B2A11BC4B7.A2BA11B3A7B$11.2B.4B3CB4.3A18.A10.18B8.B
2A12BA2B4A3B$15.4BC2B6.A15.3A12.B.3B.4B15.15B4AB3A2B$15.2B3C2B22.A20.
3B14.2AB2.13BA2B2AB2AB$16.6B41.4B14.A.AB2.4B2.9B2A3B2A$16.7B4.A35.2A
16.A6.B4.11BA2B2A$16.8B3.3A9.2A23.A15.2A13.13B$17.8B5.A8.A21.3A31.7B
2.2B$17.9B3.2A5.A3.3A18.A33.6B$16.6B.4B2.4B3.4A3.A51.6B$16.7B.4B3.5B
3.B.A.A50.7B$2A15.6B2.13B2AB2A51.6B7.A$.A8.B4.8B3.12B2A55.6B4.3A$.A.A
B3.4B.6B2AB5.11B3.2A52.8B.A$2.2AB.13B2A2B5.10B4.A51.9BA.A$4.18B7.9B3.
A52.7B.2BAB$4.17B9.9B2.2A38.2A2.2A7.6B3.2B$5.13B12.9B42.A4.A6.2B3D2B
2.2B$7.12B11.9B43.A3.A.AB3.4BD2B.B2AB$9.10B11.2B2A3B.B2A28.A11.2A4.2A
B2.4B3DB2.2A$9.11B8.3BA2BA2B.BA.A27.3A8.B2.2A4.11B$10.2B.7B7.2A3BABAB
5.A30.A7.B2A2.A3.11B$10.11B2.2A.A.AB.2BA4B3.2A28.2A6.2B.A.A4.11B$9.
11B4.A.A.2B6.2A28.2A3.4BA2B.BA.A.2A2.11B$9.11B3.A2.2AB7.A30.A5.BABA3B
2A7.7B.2B$9.11B4.2A2.B8.3A27.A.AB.2BA2BA3B8.11B$5.2A2.B3D4B2.B2A4.2A
11.A28.2AB.3B2A2B11.10B$4.B2AB.2BD4B3.BA.A3.A43.9B11.12B$5.2B2.2B3D2B
6.A4.A42.9B12.13B$4.2B3.6B7.2A2.2A38.2A2.9B9.17B$3.BA2B.7B52.A3.9B7.
18B$3.A.A9B51.A4.10B5.2B2A13B.B2A$4.A.8B52.2A3.11B5.B2A6B.4B3.BA.A$.
3A4.6B55.2A12B3.8B4.B8.A$.A7.6B51.2AB2A13B2.6B15.2A$8.7B50.A.A.B3.5B
3.4B.7B$8.6B51.A3.4A3.4B2.4B.6B$8.6B33.A18.3A3.A5.2A3.9B$3.2B2.7B31.
3A21.A8.A5.8B$.13B13.2A15.A23.2A9.3A3.8B$2A2BA11B4.B6.A16.2A35.A4.7B$
2A3B2A9B2.4B2.BA.A14.4B41.6B$B2AB2A2BA13B2.B2A14.3B20.A22.2B3C2B$2B3A
B4A15B15.4B.3B.B12.3A15.A6.2BC4B$3B4A2BA12B2AB8.18B10.A18.3A4.B3C4B.
2B$7B3A11BA2BA7.4BC11B2A2B5.B3.2A20.A3.12B$7B2A3BD8BABA4B.B2.4B3C9B2A
2B3.8B19.2A3.12B.2B$11B3D8BA8B.4BCBC13B.8B21.B4.13B2AB$11BD26BC22B19.
3B5.11BA2BA$42B2.2B.15B16.6B7.9B2A$7BA7B3.21B8.17B11.10B5.8B.B$6BABA
5B4.19B11.19B2.2B3.11B4.9B$3.2BA2BA6B5.16B12.15BD15B2A3BD13B$3.3B2A7B
5.16B13.7B.4BDBD15B2A2B2D13B$7.8B4.8B3.8B10.13B3D18B2D14B$10.3B5.11B
3.B3.2A9.14BD21B2D12B$11.B5.7B3.2A7.A11.8B2.39B$16.8B3.A9.3A8.6B11.4B
.13B5.2B.5B$15.4B3.B5.3A8.A9.5B12.4B4.B.7B8.4B$14.4B12.A18.4B14.4B18.
8B$13.4B33.3B15.4B16.A.2A.B.2A$13.3B32.4B17.3B14.3A.A4.A$11.2CB34.2A
21.B2C11.A4.A.A3.3A$10.C.CB35.A21.BC.C10.2A3.2A.A4.A$10.C35.3A25.C18.
A$9.2C35.A27.2C17.2A!

[...]

By definition, dependent conduits are those where the input Herschel interacts with catalysts in the first few ticks, and is prevented from emitting its first natural glider.

[HerscheltheHerschel]

What is the cleanest 3G BLSE synthesis?

[confocaloid]

What is the cleanest 3G BLSE synthesis?

Not sure whether I understand the question, but according to Catagolue

Code: Select all

#CSYNTH yl144_1_16_afb5f3db909e60548f086e22ee3353ac costs 4 gliders
x = 44, y = 40, rule = B3/S23
43bo$41b2o$42b2o$35bo$33bobo$34b2o2$30b3o$32bo$31bo28$b2o$obo$2bo!

[Mathemagician314]

Is this c/2 wave anywhere on the wiki? I see it in a lot of greystretchers and other constructions, but I can't find it anywhere on its own.

Code: Select all

x = 111, y = 110, rule = B3/S23
3o$bo$2b3o$3bo$4b3o$5bo$6b3o$7bo$8b3o$9bo$10b3o$11bo$12b3o$13bo$14b3o$
15bo$16b3o$17bo$18b3o$19bo$20b3o$21bo$22b3o$23bo$24b3o$25bo$26b3o$27bo
$28b3o$29bo$30b3o$31bo$32b3o$33bo$34b3o$35bo$36b3o$37bo$38b3o$39bo$40b
3o$41bo$42b3o$43bo$44b3o$45bo$46b3o$47bo$48b3o$49bo$50b3o$51bo$52b3o$
53bo$54b3o$55bo$56b3o$57bo$58b3o$59bo$60b3o$61bo$62b3o$63bo$64b3o$65bo
$66b3o$67bo$68b3o$69bo$70b3o$71bo$72b3o$73bo$74b3o$75bo$76b3o$77bo$78b
3o$79bo$80b3o$81bo$82b3o$83bo$84b3o$85bo$86b3o$87bo$88b3o$89bo$90b3o$
91bo$92b3o$93bo$94b3o$95bo$96b3o$97bo$98b3o$99bo$100b3o$101bo$102b3o$
103bo$104b3o$105bo$106b3o$107bo$108b3o$109bo!
[[ ZOOM 12 ]]

[dvgrn]

What is the cleanest 3G BLSE synthesis?

There's one three-glider collision that produces a glider-producing switch engine, by simsim314. It was once kinda mislabeled as a BLSE, but don't be fooled... Oddly enough, even though BLSEs are more common than GPSEs, I don't recall that any BLSE-producing 3G collisions have turned up yet.

There might still be one out there in the space not enumerated by 2718281828's 3G collision collection.