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Find c/4 rakes and puffers?

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Re: Find c/4 rakes and puffers?

Postby Redstoneboi » August 20th, 2018, 9:38 am

I don’t know how, but it’s proven they don’t exist.
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Re: Find c/4 rakes and puffers?

Postby dvgrn » August 20th, 2018, 9:51 am

Redstoneboi wrote:I don’t know how, but it’s proven they don’t exist.

Must be a flaw in the proof, then. See the Life status page on the Life Wiki to see what's known and what isn't. Are you looking for orthogonal or diagonal c/4? There's a diagonal c/4 sideways rake in Golly's pattern collection -- Patterns/Life/Rakes/c4-sideways-rake.rle.

The first place to hunt for specific examples is Jason Summers' jslife collection.
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Re: Find c/4 rakes and puffers?

Postby Redstoneboi » August 20th, 2018, 9:53 am

Wait, I was looking at c/4 orthogonal puffers, those don’t exist, But c/4 diagonal does. Sorry.
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Re: Find c/4 rakes and puffers?

Postby dvgrn » August 20th, 2018, 10:23 am

Redstoneboi wrote:Wait, I was looking at c/4 orthogonal puffers, those don’t exist...

Where are you looking, exactly? c/4 orthogonal puffers and rakes certainly do exist, for all periods 120 and above, and a scattering of periods below that. They're actually quite a bit easier to construct than c/4 diagonal ones.

#C p104 c/4 rake based on p936 glider/negative-glider loop
x = 197, y = 176, rule = B3/S23
131bo3bo$129b9o2$132bobo$129b2obobob2o$62bobobo$61b7o62bobobobo$61bo5b
o61bo2bobo2bo$62bo3bo63bobobobo$62bo3bo60b2obobobobob2o$60b2o5b2o57b2o
2bobobobo2b2o$62bo3bo62b2obobob2o$60b2obobob2o57bo3bobobobo3bo$59bobob
obobobo56bo5bobo5bo$57b3obobobobob3o60bobo$57b2o2bobobobo2b2o56bo9bo$
57b2ob2obobob2ob2o56b2ob5ob2o$60b2obobob2o58bobobo3bobobo$63bobo61bob
3o3b3obo$126bob2o7b2obo$59b2obo3bob2o57b4o5b4o$58bobob5obobo57b2o2bobo
2b2o$58bo5bo5bo57bo2b2ob2o2bo$57b2o3bo3bo3b2o56bo2bo3bo2bo$57bo4bo3bo
4bo56bob7obo$61bo5bo62bo5bo$63bobo64b2o3b2o25bobobo$58b2ob3ob3ob2o61b
3o26b7o$58b2o9b2o61b3o26bo5bo$61bob3obo58bo13bo21bo3bo$64bo61bo13bo21b
o3bo$30b2obob2o24b7o57bobob3o3b3obobo18b2o5b2o$30bo2bo2bo93bob3obo25bo
3bo$30bo2bo2bo26bobo63bo2bobo2bo22b2obobob2o$30b2o3b2o27bo66b2ob2o23bo
bobobobobo$31bo3bo20b3o2bo5bo2b3o58b5o21b3obobobobob3o$30b2o3b2o20bo2b
9o2bo85b2o2bobobobo2b2o$31bo3bo23bo3bobo3bo58b2o7b2o18b2ob2obobob2ob2o
$29b2obobob2o23bo5bo59bobo2bobo2bobo20b2obobob2o$28bobobobobobo22bo5bo
59bo2b3ob3o2bo23bobo$26bobobobobobobobo21bo3bo60b5o3b5o$25bo4bobobobo
4bo21b3o61bobo7bobo19b2obo3bob2o$26b2o4bobo4b2o18b2o7b2o55bob3o7b3obo
16bobob5obobo$28b3obobob3o19bobo2bobo2bobo53bo4bo3bo3bo4bo15bo5bo5bo$
31bo3bo21b2o4bobo4b2o53bob3o3bo3b3obo15b2o3bo3bo3b2o$57b2o4bobo4b2o53b
o3bo2bobo2bo3bo15bo4bo3bo4bo$28b2obobobob2o87bo3bo5bo3bo20bo5bo$27bobo
bobobobobo17b2ob2o5b2ob2o54bo4b5o4bo22bobo$27bo2b2obob2o2bo15b2o4bo5bo
4b2o57bo3bo22b2ob3ob3ob2o$26b2o4bobo4b2o14b3o2b2ob3ob2o2b3o53bo3b2ob2o
3bo18b2o9b2o$26b2o2b2o3b2o2b2o15bobob2o2bo2b2obobo54bo2bo5bo2bo21bob3o
bo$31bo3bo20b2o3bo5bo3b2o54bo3b5o3bo24bo$29b2obobob2o23b7o60bo9bo22b7o
$27b3ob2ob2ob3o21bo5bo58b2o4b3o4b2o$27b2obo5bob2o21b3ob3o58b15o22bobo$
32b3o22b3obo5bob3o56bo3bobo3bo25bo$30bo5bo21b2o2b5o2b2o56b2o2bo3bo2b2o
16b3o2bo5bo2b3o$31b5o21bobo2bo3bo2bobo53bo2bob2o3b2obo2bo15bo2b9o2bo$
57bo3bo5bo3bo52bobo2bo7bo2bobo16bo3bobo3bo$33bo23bo2b2o5b2o2bo52bobob
2o7b2obobo18bo5bo$26bo6bo6bo16bo13bo53b3o11b3o19bo5bo$25b3ob2o5b2ob3o
16b2ob3ob3ob2o55b2o11b2o21bo3bo$25b2ob3obobob3ob2o14b2obob2o3b2obob2o
54bo11bo23b3o$32bobo20bobo13bobo53b2o3b3o3b2o19b2o7b2o$29bobo3bobo17bo
3b2o7b2o3bo54bo4bo4bo19bobo2bobo2bobo$30b2o3b2o88b2o13b2o15b2o4bobo4b
2o$31b5o20bo2bo9bo2bo52b2ob3o5b3ob2o15b2o4bobo4b2o$32b3o29bo61bo2bo2b
3o2bo2bo$28b2o2bobo2b2o19b2o3b3o3b2o56bo11bo17b2ob2o5b2ob2o$26b2obo7bo
b2o16bobo3b3o3bobo54bo3b2o3b2o3bo14b2o4bo5bo4b2o$31b2ob2o20b2obo9bob2o
54bo5bo5bo15b3o2b2ob3ob2o2b3o$26b2o11b2o18b3o2bo2b3o59bobo3bobo18bobob
2o2bo2b2obobo$28bo9bo17b2o2b2o2bo2b2o2b2o58bo3bo20b2o3bo5bo3b2o$25b2o
2b2o5b2o2b2o15b2o2b7o2b2o56b2o2bobo2b2o22b7o$24bo2b2o4bo4b2o2bo14b2o
11b2o55bobo2bobo2bobo21bo5bo$28bo3b3o3bo23b2ob2o61bo9bo22b3ob3o$27b2o
3b3o3b2o21bobobobo60b2o3bo3b2o18b3obo5bob3o$25b2o13b2o17b2ob2ob2ob2o
55b2o5bobo5b2o16b2o2b5o2b2o$29b2ob3ob2o21b5ob5o55b6o5b6o15bobo2bo3bo2b
obo$29bo7bo20bobo7bobo54bob2o9b2obo15bo3bo5bo3bo$27bo2bo5bo2bo18bo5bo
5bo86bo2b2o5b2o2bo$26bobobo5bobobo17b3o3bo3b3o55b2o3b2ob2o3b2o16bo13bo
$30b7o19bo4bo2bo2bo4bo54bob2obobob2obo18b2ob3ob3ob2o$26bob4obob4obo14b
o4bo7bo4bo52bo2bobo3bobo2bo15b2obob2o3b2obob2o$25b2o3b2o3b2o3b2o14bo
15bo53b2ob3o3b3ob2o14bobo13bobo$25b3ob2o5b2ob3o17bo9bo59bobo3bobo17bo
3b2o7b2o3bo$26bobo9bobo16b3ob3ob3ob3o53bob3o3bo3b3obo$25bo2bobobobobob
o2bo16bobo2bobo2bobo53b2o2b2ob5ob2o2b2o13bo2bo9bo2bo$25b2obobobobobobo
b2o15bo5bobo5bo32b3o7b3o10bobob5obobo24bo$24bobobobo5bobobobo14b2obob
2ob2obob2o55bob2o5b2obo18b2o3b3o3b2o$25bo15bo20b2ob2o37bo2bo5bo2bo9bo
2bo7bo2bo16bobo3b3o3bobo$28b2o7b2o16b4o3bobobo3b4o30bo11bo15b3o21b2obo
9bob2o$55b2o5bo3bo5b2o8bo9bo12b2o7b2o16b3o7bo6bo9b3o2bo2b3o$27b2o3b3o
3b2o17b2o11b2o10bo9bo13bob2ob2obo17b3o6b3o5bo6b2o2b2o2bo2b2o2b2o$27b2o
9b2o17b2obob5obob2o9bobo7bobo9b2ob2obobob2ob2o23b3o4bobo6b2o2b7o2b2o$
25b2ob2o2bobo2b2ob2o17b3o2bo2b3o31b2obo2bobobobo2bob2o37b2o11b2o$25b2o
bo3bobo3bob2o21bobo15bobo7bobo10bo2bobobobo2bo26b2obo15b2ob2o$28bobo5b
obo15b3o5bo3bo15b3o5b3o7bo3bobo2bobo2bobo3bo25bob2o11bobobobo$25b2o13b
2o5b3o13bobo15bo3b2ob2o3bo7b4obobo3bobob4o15b2o5bo3bobobo8b2ob2ob2ob2o
$28b11o9bo5bobo7bo14b3obo2bobo2bob3o9b2o2bobo2b2o15b2obo2bo4bo3bo2b3o
7b5ob5o$26b2o2bo5bo2b2o12bo25bobo2bobobobo2bobo9bo3bobo3bo6bo5bo2b2o2b
obo8b2obo8bobo7bobo$31b2ob2o14bobo10b3o12bo2bob2obobob2obo2bo23bobo13b
o6b2ob2o10bo5bo5bo$29b2o5b2o10b2obo2bo7bo3bo11b2obobo2bobo2bobob2o8bo
4bo4bo8bo3bo4bo15bo8b3o3bo3b3o$28bo9bo7bo2bob2o9bo3bo4b2o5b4obob2ob2ob
ob4o9b2obobob2o5b2o11bo15b2obo3bo4bo2bo2bo4bo$27bo4bobo4bo6bo4b2o9bo3b
o3bo2bo5b2o2b4ob4o2b2o30bo6bo13b2o3bo2bo4bo7bo4bo$27bobob5obobo8bo5bo
8b3o4bo2b2o7b2o7b2o31bo23bo7bo15bo$26b2obo7bob2o9b3o16bo2b2o13bo59bo3b
o7bo9bo$26b4o2b3o2b4o6b3o19b4o10bo3bo3bo56bo2bo5b3ob3ob3ob3o$30bo5bo9b
3o34bo3bo3bo56bo9bobo2bobo2bobo$24b2o15b2o3bo2b2o99b2o5bo5bobo5bo$49bo
107b2obob2ob2obob2o$26bob2obo3bob2obo8b2o99b2o10b2ob2o$26bo3b3ob3o3bo
8b2o100bo3b4o3bobobo3b4o$29b2obobob2o8b3o106b2o5bo3bo5b2o8bo9bo$26bo3b
obobobo3bo110b2o4b2o11b2o10bo9bo$26b2o2bo5bo2b2o116b2obob5obob2o9bobo
7bobo$28bo9bo7b2o111b3o2bo2b3o$24bobo3b2obob2o3bobo3b2o115bobo15bobo7b
obo$24bo7bobo7bo2b2o107b3o5bo3bo15b3o5b3o$4b3o7b3o10b2ob2obob2ob2o107b
3o31bo3b2ob2o3bo$5bo9bo10bo2bob5obo2bo107bo5bobo22b3obo2bobo2bob3o$27b
4o5b4o113bo9b3o13bobo2bobobobo2bobo$6b2o5b2o14b9o4bo107bobo25bo2bob2ob
obob2obo2bo$4bob3o3b3obo14b2ob2o6bo6bo98b2obo2bo23b2obobo2bobo2bobob2o
$4bo3b2ob2o3bo15b3o6bobo4b3o95bo2bob2o25b4obob2ob2obob4o$2bobo2bobobob
o2bobo14bo14b3o83bo11bo4b2o8b2o16b2o2b4ob4o2b2o$b2obo2bobobobo2bob2o
24bo21bo65bobo13bo5bo5bo21b2o7b2o$bo2bob2obobob2obo2bo24b5o15b2o67b2o
15b3o34bo$o3bobo2bobo2bobo3bo23bo3b2o15b2o80b3o10bo3bo18bo3bo3bo$4bobo
7bobo15b5o7bo3b3o95b3o12b2o3bo8bo7bo3bo3bo$bo7bobo7bo11bo5bo6b4o2bo95b
o2b2o13bo2bo5b2o$5b2ob5ob2o6bo12bobo6bo2bo101bo15b2o7b2o$5b2o7b2o4b3o
8b3o2bo9b2o2bo98b2o$9b3o20bo13b3o2bo97b2o$33bo13bo3bo94b3o$33bo13b2o2b
o$49bo$49bo96b2o$47bo2bo95b2o$48b3o94b2o$50bo2$50b2o2$50b3o7$147bo$53b
o91bobo$51b2o93b2o$52b2o$162bo$34bo125b2o$35bo125b2o$33b3o10$45b2o24b
2o24b2o24b2o24b2o$45bobo23bobo23bobo23bobo23bobo$45bo25bo25bo25bo25bo
3$45b2o24b2o24b2o24b2o24b2o$46b2o24b2o24b2o24b2o24b2o$45bo25bo25bo25bo
25bo!
#C [[ TRACK 0 -1/4 AUTOSTART ]]
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Re: Find c/4 rakes and puffers?

Postby 77topaz » August 20th, 2018, 6:25 pm

Maybe Redstoneboi was thinking of c/4 period 4 puffers, which cannot exist?

Also, the OP seems somewhat spammy to me, though the common red flags like links in their signature aren't present.
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Re: Find c/4 rakes and puffers?

Postby Redstoneboi » August 20th, 2018, 7:28 pm

Ok, I'm definitely looking at outdated lists. :oops:
c(>^w^<c)~*
This is Fluffy the cat.
Fluffy wants to discover new things that everyone likes.
Fluffy thinks about engineering replicators.
Fluffy likes to watch spaceship guns in Golly.
Fluffy knows Natsuki best girl.
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