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Spaceship Discussion Thread

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

Re: Spaceship Discussion Thread

Postby dvgrn » February 7th, 2018, 3:17 pm

Not to open another knightship can of worms, but has anyone looked at the possibility of knight-greyships? Are there any known edges that build, or eat, stripes agar at (2,1)c/something?
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Re: Spaceship Discussion Thread

Postby wildmyron » February 7th, 2018, 10:26 pm

@rokicki: That's a very nice partial.

dvgrn wrote:Not to open another knightship can of worms, but has anyone looked at the possibility of knight-greyships? Are there any known edges that build, or eat, stripes agar at (2,1)c/something?

@dvgrn: :o Has your account been hijacked by one of the forum's more enthusiastic members? The one's whose fanciful requests you are normally trying to gently bring back to reality with sensible expectations of what is feasible with current search technology. :)

On a more serious note, I can't recall any knight wise grey ship components being posted, though there have been a few higher period components found (like this c/6 erosion component and Hartmut has found some 2c/6 against the grain components, but not been able to complete a ship). There are surely (2,1)c/6 components to extend, and probably consume the stripes agar, but finding the corners to hold it together when we can't even find a single (2,1)c/6 elementary ship? Phew, the mind boggles.
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Re: Spaceship Discussion Thread

Postby AforAmpere » February 18th, 2018, 5:46 pm

C/8 diagonal partial, searched up to w6 with gfind in all symmetries, how much has been previously searched?
x = 28, y = 29, rule = B3/S23
5$17bo2$16bo2$13bob2o$22bo$12b3o5bo$13bob4obo$17bo$9bo4bo$8bobo3bo2bo$
11bo4b2o$11bo2bo$8bo2bob2o$5bo2bobo$3bo2bobo$4b2o2b2o$4bobob2o$5b2obo$
6b2o!

Infinitely extensible C/5, I don't know if it is known:
x = 37, y = 350, rule = B3/S23
2$18b2o$18b2o$16bob2obo$14b3o4b3o$11b2o12b2o$11b2o2bob4obo2b2o$15bobo
2bobo2$14b2o6b2o$11b6o4b6o$11bobo10bobo$11bob2o8b2obo$11bob2o8b2obo$
10b2ob2o8b2ob2o$10b2obo10bob2o$11bobo10bobo$13bo2b2o2b2o2bo$12bo4bo2bo
4bo$18b2o$17bo2bo2$13b4o4b4o$10b3o2b2ob2ob2o2b3o$12bo5b2o5bo$10b2obob
3o2b3obob2o$12b3o3b2o3b3o$12bo12bo$14b2o2b2o2b2o$14b10o$14bob2o2b2obo$
16bo4bo$17bo2bo$15bobo2bobo$14b2ob4ob2o$14b2ob4ob2o$15bo6bo$14b3o4b3o$
12bobo8bobo$11bo14bo$11b2ob2o6b2ob2o$14b2o6b2o$13b2ob6ob2o$11b2obo8bob
2o$15bo6bo3$15b8o$15b2o4b2o$15b3o2b3o$16bo4bo$15b3o2b3o$15bo2b2o2bo$
15bo2b2o2bo$15bo6bo2$14b2obo2bob2o$16b2o2b2o2$13b2o8b2o$13b2obo4bob2o$
12bob4o2b4obo$12b2o10b2o$12bo5b2o5bo$12bo12bo$12bo3bo4bo3bo$13b3o2b2o
2b3o$15b2o4b2o$15b2o4b2o$10b3ob2o6b2ob3o$11bob2o8b2obo$16b6o$16b2o2b2o
$12bo12bo$12b3o3b2o3b3o$11b2o12b2o$15b2o4b2o$15bobo2bobo$17bo2bo$15bo
2b2o2bo$16b2o2b2o$16bo4bo$12bobo8bobo$10b2o2b2o6b2o2b2o$10b2o2b3o4b3o
2b2o$14b2o6b2o$14b2o6b2o$14b2o2b2o2b2o$13b3o2b2o2b3o$17bo2bo$15bo6bo$
16bo4bo$15bo6bo$17bo2bo$17b4o$18b2o$16b2o2b2o3$16b2o2b2o$15bo2b2o2bo$
16b2o2b2o$16bo4bo$12bobo8bobo$11bo2bo8bo2bo$12bobo8bobo$17bo2bo$13bo2b
2o2b2o2bo$12bobo3b2o3bobo$11b2o4bo2bo4b2o$17b4o$10bo4bo2b2o2bo4bo$11bo
4b2o2b2o4bo$11bo4b6o4bo$17bo2bo$13bo4b2o4bo$12b2o2bo4bo2b2o$11bo4bo4bo
4bo$16bo4bo$17b4o$13bobo6bobo$12bobob2o2b2obobo$12bobob6obobo$11b6ob2o
b6o$15b2o4b2o$11b2ob2o6b2ob2o$11b2o12b2o$11b2o5b2o5b2o$17bo2bo$17bo2bo
2$15b2o4b2o$14bo2bo2bo2bo$16b6o$13b3o2b2o2b3o$14bo8bo$16b2o2b2o$15bo6b
o$15bo6bo$17bo2bo$11bo4bo4bo4bo$10bobo2b2o4b2o2bobo2$10b2obo2b2o2b2o2b
ob2o$17b4o$13bobobo2bobobo$13b4o4b4o$15bo6bo$18b2o$18b2o2$15b2o4b2o$
15b2o4b2o$15b2o4b2o$13bo2bo4bo2bo$12bo5b2o5bo$13bo4b2o4bo$18b2o$15bo6b
o$15b2o4b2o2$17bo2bo$10b3obo8bob3o$11bo3bobo2bobo3bo$11bobob3o2b3obobo
$13b3obo2bob3o$12b2o10b2o$15bo6bo2$17b4o$18b2o2$15b2o4b2o$14bo2bo2bo2b
o$14bo2b4o2bo$13b3o6b3o2$17bo2bo$16b6o$15b3o2b3o$17bo2bo$15b2o4b2o$10b
3o12b3o$10b3o3bo4bo3b3o$11bob2o2bo2bo2b2obo$17bo2bo$12b2obobo2bobob2o$
14b3o4b3o2$18b2o$17bo2bo2$16bo4bo$15b2o4b2o2$13bo2bo4bo2bo$13b4o4b4o$
13b2ob6ob2o$15b2o4b2o$15bo6bo$16bo4bo$16bo4bo$11bo3b3o2b3o3bo$11bo3b2o
4b2o3bo$10bobo2bobo2bobo2bobo$16b2o2b2o$12bobo8bobo$13bobobo2bobobo$
13bo10bo$15b2o4b2o$18b2o$18b2o2$15b2o4b2o$14bo2bo2bo2bo$14bo2bo2bo2bo$
15b3o2b3o$12b2o3b4o3b2o$17bo2bo$18b2o$15b2o4b2o$15b2o4b2o$16bo4bo$11bo
14bo$10b3o3bo4bo3b3o$13bobobo2bobobo$13bo3b4o3bo$15bobo2bobo$12b2ob2o
4b2ob2o2$18b2o$17bo2bo$17bo2bo2$15b2o4b2o$14bo2bo2bo2bo$16b6o$13b3o2b
2o2b3o$14bo8bo$16b2o2b2o$15bo6bo$15bo6bo$17bo2bo$11bo4bo4bo4bo$10bobo
2b2o4b2o2bobo2$10b2obo2b2o2b2o2bob2o$17b4o$13bobobo2bobobo$13b4o4b4o$
15bo6bo$18b2o$18b2o2$15b2o4b2o$15b2o4b2o$15b2o4b2o$13bo2bo4bo2bo$12bo
5b2o5bo$13bo4b2o4bo$18b2o$15bo6bo$15b2o4b2o2$17bo2bo$10b3obo8bob3o$11b
o3bobo2bobo3bo$11bobob3o2b3obobo$13b3obo2bob3o$12b2o10b2o$15bo6bo2$17b
4o$18b2o2$15b2o4b2o$14bo2bo2bo2bo$14bo2b4o2bo$13b3o6b3o2$17bo2bo$16b6o
$15b3o2b3o$17bo2bo$15b2o4b2o$10b3o12b3o$10b3o3bo4bo3b3o$11bob2o2bo2bo
2b2obo$17bo2bo$12b2obobo2bobob2o$14b3o4b3o2$18b2o$17bo2bo2$16bo4bo$15b
2o4b2o2$13bo2bo4bo2bo$13b4o4b4o$13b2ob6ob2o$15b2o4b2o$15bo6bo$16bo4bo$
16bo4bo$11bo3b3o2b3o3bo$11bo3b2o4b2o3bo$10bobo2bobo2bobo2bobo$16b2o2b
2o$12bobo8bobo$13bobobo2bobobo$13bo10bo$15b2o4b2o$18b2o$18b2o2$15b2o4b
2o$14bo2bo2bo2bo$14bo2bo2bo2bo$15b3o2b3o$12b2o3b4o3b2o$17bo2bo$18b2o$
15b2o4b2o$15b2o4b2o$16bo4bo$11bo14bo$10b3o3bo4bo3b3o$13bobobo2bobobo$
13bo3b4o3bo$15bobo2bobo$12b2ob2o4b2ob2o2$18b2o$17bo2bo$17bo2bo!
Things to work on:
- Find a (7,1)c/8 ship in a Non-totalistic rule (someone please search the rules)
- Find a C/10 in JustFriends
- Find a C/10 in Day and Night
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Re: Spaceship Discussion Thread

Postby Sokwe » February 18th, 2018, 8:20 pm

AforAmpere wrote:searched up to w6 with gfind in all symmetries, how much has been previously searched?

As far as I know there has been very little searching done for a c/8 diagonal ship. I should point out that WLS and JLS are faster than gfind for diagonally-shaped searches. Searches for short, wide ships might also be useful. Sometimes you can find a short, wide component and use that as the wings of a long, skinny core. This is how 56P6H1V0 and lobster were found.

AforAmpere wrote:Infinitely extensible C/5, I don't know if it is known

This is known, and can be found in my moving object collection. This particular component is in velocity-c5o/ships-c5o-width-18.rle. In fact, every possible c/5 orthogonal width-18 bilaterally-symmetric spaceship can be constructed using components from that collection. This was shown by Tim Coe using his Knightt program.
-Matthias Merzenich
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Re: Spaceship Discussion Thread

Postby AforAmpere » February 18th, 2018, 10:00 pm

My WLS says it can't output to a file for some reason. I wanted it to output long partials, but it says it cannot create the file.
Things to work on:
- Find a (7,1)c/8 ship in a Non-totalistic rule (someone please search the rules)
- Find a C/10 in JustFriends
- Find a C/10 in Day and Night
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Re: Spaceship Discussion Thread

Postby wildmyron » Yesterday, 3:49 am

AforAmpere wrote:My WLS says it can't output to a file for some reason. I wanted it to output long partials, but it says it cannot create the file.

This works fine for me. Is WLS perhaps installed to a location which needs Administrator rights to modify files? Or perhaps the output file already exists and is open in another program?
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