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Thread for your unsure discoveries

For discussion of specific patterns or specific families of patterns, both newly-discovered and well-known.

Re: Thread for your unsure discoveries

Postby mniemiec » July 13th, 2017, 6:49 pm

Gamedziner wrote:Is this catalytic glider reflector known?
bo$2bo$3o11$15b2o$15b2o11$3o$2bo$bo!

Yes. Peter Raynham found that over 40 years ago, and it may have already been known then. You can pretty much assume that all 1-glider collisions into small objects have been tried long ago, and that also includes symmetric arrangements of multiple reflected or rotated copies of one glider around small objects. This is not to say that you shouldn't try them - there is much to be learned, even in territory that has been previously explored. I'm just saying that if you make discoveries in such areas, they have likely been made before, many times, by many people, so posting them won't be useful. You can find many copies of this reflector in use on the wiki, or various pattern collections.
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Re: Thread for your unsure discoveries

Postby Gamedziner » July 13th, 2017, 9:52 pm

muzik wrote:Very well known. If you position the block differently, it also reflects backwards.
mniemiec wrote:Yes. Peter Raynham found that over 40 years ago, and it may have already been known then. You can pretty much assume that all 1-glider collisions into small objects have been tried long ago, and that also includes symmetric arrangements of multiple reflected or rotated copies of one glider around small objects. This is not to say that you shouldn't try them - there is much to be learned, even in territory that has been previously explored. I'm just saying that if you make discoveries in such areas, they have likely been made before, many times, by many people, so posting them won't be useful. You can find many copies of this reflector in use on the wiki, or various pattern collections.
Thank you both for informing me of this. (I saw muzik's reply earlier, but I was unsure as to how I should formulate a reply.)
A base-2 ruler for all your measuring needs in CGOL:
32b32o$16b16o16b16o$8b8o8b8o8b8o8b8o$4b4o4b4o4b4o4b4o4b4o4b4o4b4o4b4o$2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o$bobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobo
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Re: Thread for your unsure discoveries

Postby gmc_nxtman » July 14th, 2017, 12:38 pm

Compacted an 8G psuedo-SL synthesis from a while ago:

x = 32, y = 37, rule = B3/S23
11bo$10bo$10b3o3$29bo$29bobo$7bo21b2o$8bo$6b3o$2b3o$4bo10b2o$3bo10b2o$
16bo4$14b2o$13b2o$15bo$10b3o$12bo$11bo12$b2o$obo$2bo!


EDIT: Synthesis of heart with cis bun and wing in 9 gliders:

x = 39, y = 45, rule = B3/S23
bo$2bo$3o15$25bo$25bobo$25b2o5$16bo$15bobo10b2o$15bo2bo9bobo$16b2o10bo
3$25b2o$26b2o$25bo2$30b3o$30bo$31bo2$36b3o$36bo$37bo2$13b2o$14b2o$13bo!



EDIT2: Syntheses of p4s i'm not seeing anywhere else:

x = 75, y = 37, rule = B3/S23
3bo$bobo46bo$2b2o11bo35b2o9bo$16b2o32b2o9bo6bo$15b2o44b3o2b2o$7bo59b2o
$8bo21bo26bo$6b3o19b2o25bobo$29b2o25b2o2$42bo$42bobo$11bo30b2o29bo$9bo
bo60bo$10b2o60b3o2$12b2o$13b2o$12bo19bo$30b2o$31b2o2$33b2o$33bobo14b3o
$b2o30bo18bo$obo48bo$2bo2$14b2o$15b2o19b3o28b2o$14bo21bo30bobo$37bo29b
o$28b2o26b2o$27b2o28b2o2b3o$29bo11b2o13bo6bo9b2o$41bobo18bo9b2o$41bo
32bo!


EDIT3: Alternate 6G eater2 synthesis:

x = 14, y = 15, rule = B3/S23
3bo$3bobo$3b2o8bo$11b2o$2bo9b2o$obo$b2o3$10b2o$10bobo$10bo$b2o$obo$bo!


EDIT4: 8G synthesis:

x = 16, y = 48, rule = B3/S23
6bo$4bobo$5b2o4$8bobo$9b2o$9bo$11bo$11b2o$10bobo10$b2o$obo$2bo$13bo$
13bobo$13b2o10$3bobo$3b2o$4bo$6bo$5b2o$5bobo4$9b2o$9bobo$9bo!
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Re: Thread for your unsure discoveries

Postby Gamedziner » July 16th, 2017, 8:21 pm

Scorbie wrote:This is an accidental, unsure, and maybe useless, but I'll just post it in this thread.
Queen Bee phase shifting. There's slight possibility that we could make it to a p26...
x = 7, y = 7, rule = B3/S23
o4b2o$obo2b2o$bobo$bo2bo$bobo$obo2b2o$o4b2o!

This was posted a few years ago. However, I noticed something interesting: the queen bee is shifted one cell to the right after 28 generations. Could this mean that a (relatively) tiny c/28 spaceship is just waiting to be discovered, even if the stabilization is large?
A base-2 ruler for all your measuring needs in CGOL:
32b32o$16b16o16b16o$8b8o8b8o8b8o8b8o$4b4o4b4o4b4o4b4o4b4o4b4o4b4o4b4o$2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o$bobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobobo
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Re: Thread for your unsure discoveries

Postby gmc_nxtman » July 16th, 2017, 8:22 pm

Three siamese loaves in 7 gliders:

x = 19, y = 23, rule = B3/S23
11bo$11bobo$11b2o2$17bo$16bo$3bo12b3o$4bo5b2o$2b3o4b2o$11bo$14bo$13b2o
$13bobo5$2o$b2o$o$6b2o$6bobo$6bo!


I don't know how many gliders this previously took, but I am approximately 99% sure this is an improvement if this is unknown, which it might not be, considering its simplicity.

EDIT: LWSS-on-LWSS pseudo-spaceship in 6 gliders:

x = 19, y = 24, rule = B3/S23
4b3o$4bo$5bo2$2b3o$4bo$3bo$8b2o$8bobo$3o5bo$2bo$bo9$10b2o$9b2o5b3o$11b
o4bo$17bo!


Is this known?

EDIT2: Oops, I already posted the accidental discoveries thread but forgot to delete it from my unpublished syntheses
Last edited by gmc_nxtman on July 17th, 2017, 1:10 am, edited 2 times in total.
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Re: Thread for your unsure discoveries

Postby mniemiec » July 17th, 2017, 1:04 am

gmc_nxtman wrote:Three siamese loaves in 7 gliders: ...

This is 17.3272, and I am not aware of any previous synthesis of it. This is simple, and unlikely to be improved.
gmc_nxtman wrote:EDIT: LWSS-on-LWSS pseudo-spaceship in 6 gliders: ... Is this known?

Didn't you just post a mirror-image of this 5 days ago? (I noted the date, but not which forum it was on). The mechanism was indeed known, but it used to take 5 gliders to make the HF+3/4TL combo, for a total of 7. You doing it from only 4 reduces this.
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Re: Thread for your unsure discoveries

Postby wildmyron » July 17th, 2017, 2:27 am

mniemiec wrote:
gmc_nxtman wrote:Three siamese loaves in 7 gliders: ...

This is 17.3272, and I am not aware of any previous synthesis of it. This is simple, and unlikely to be improved.

Surely the completion of the 17-bit SL Syntheses thread means that there was a known synthesis?
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Re: Thread for your unsure discoveries

Postby mniemiec » July 17th, 2017, 5:53 am

wildmyron wrote:Surely the completion of the 17-bit SL Syntheses[/url] thread means that there was a known synthesis?

The completion of the 15...18-bit still-lifes synthesis projects only provided explicit syntheses for those still-lifes that had not previously been determined to be trivially buildable from smaller/simpler ones (for example, for the 17-bit ones, there are 3286 still-lifes, 198 of which are non-trivial in this sense). The combination of the many trivial implicit syntheses, plus the remaining manual explicit syntheses, provided exhaustive proofs that all still-lifes of these sizes have syntheses.

In this case, each of the two teardrops could be made from a carrier for 4 gliders, so it could be made from 15.918 (my notes say this costs 10, but I haven't cross-checked it with Bob Shemyakin's latest lists), for a total of 18.
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Re: Thread for your unsure discoveries

Postby gmc_nxtman » July 17th, 2017, 5:37 pm

A really odd component:

x = 22, y = 22, rule = B3/S23
9bo$9b3o$12bo$11b2o6$o$b2o$2o6bobo2b2o4b2o$9b2ob2o5bobo$9bo4bo4bo5$5b
2o$6b2o6bo$5bo7b2o$13bobo!


The middle object at T=16 was brute-forced, so someone can probably find a more elegant/cheap version.

EDIT: Popseq found this but there's no clearance (cri) (sayad):

x = 25, y = 20, rule = B3/S23
16bo$15b2o$15bobo$11b3o$13bo$9bo2bo5b2o$2b2o14bobo$bobo3bo2bo7bo$bo$2o
3bo2bo5b2o$13bobo$3bo2bo8bo2$bo2bo2$2bo2$22b3o$22bo$23bo!


EDIT2: 9G Component to extend a vessel by 5 that is probably overexpensive:

x = 20, y = 20, rule = B3/S23
19bo$17b2o$18b2o2$16bo$12bob2o$10bobo2b2o$11b2o3$6bo$7bo$5b3o$15bo$5bo
8bobo$5b2o6bo2bo$4bobo7b2o$bo16bo$b2o14bobo$obo15bo!


At least it beats extending it once five times...
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Re: Thread for your unsure discoveries

Postby Rhombic » July 21st, 2017, 12:58 pm

This component seems too simple for it not to have been discovered before ...so it probably has:
x = 5, y = 14, rule = B3/S23
2bo$bobo$2bo2$5o$o3bo$b3o2$2bo$bobo$o3bo$o2bo$o2bo$obo!


EDIT: It must have:
x = 5, y = 9, rule = B3/S23
2bo$bobo$2bo2$5o$o3bo$b3o2$2bo!
there may be bugs in gfind
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